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Part 1 of this two-part blog post discusses the issues and challenges in injection moulding and suggests using simulation software and the statistical method called Design of Experiments (DOE) to speed development and boost quality. This part presents a case study that illustrates this approach. This case study considers the example of a hand dispensing pump for a sanitiser bottle where the main areas of concern were warpage and the concentricity of the tube, as this had a critical impact on fit and functionality. In this example, the first step was to carry out a preliminary fill, pack, cool and warp analysis to ensure that the part had no filling difficulties such as short shots or hesitation. DOE was then carried out and, since the areas of concern were warpage and concentricity, these were selected as the quality factor/responses. A Taguchi L9 DOE was then created using Minitab Statistical Software. It should be noted that a Taguchi DOE assumes no significant interaction between factors, but this may not necessarily be true. In this case, however, it was selected to determine the relationship between the factors and responses in the shortest simulation time. The Minitab worksheet below shows the process settings for the nine runs using the Taguchi L9 Design. Moldex3D DOE was then used to perform the mathematical calculations based on the user’s specification (minimum warpage and linear shrinkage between nodes) to determine the optimum process setting. From the nine different simulated runs, a main effect graph for warpage was plotted. From this, it could be seen that by increasing the packing pressure and cooling time, warpage was reduced. Increasing melt temperature, on the other hand, lead to higher warpage. Using a filling time of 0.2s or 0.3s seemed to give slightly lesser warpage than 0.1s. Hence, it was determined that to achieve lower warpage, the optimum process setting should be a melt temperature of 225°C, packing pressure of 15MPa, cooling time of 12s and filling time of 0.3s. Taking the results obtained from Moldex3D, Minitab Statistical Software was used to determine which of the four factors had the biggest influence on part warpage. This data analysis showed that cool time had the biggest impact on part warpage, followed by packing pressure, melt temperature and then filling time. An area graph of warpage (PDF DOWNLOAD CHART 1) showed a quick comparison of the nine different runs, indicating that run 3 gave the least warpage. Concentricity is difficult to measure, in both real life and in simulation. In real life, the distance between different points is measured using a coordinate-measuring machine (CMM). In the Moldex3D simulation, the linear shrinkage between different nodes was measured. Eight different nodes were identified. The linear shrinkage of the diameter of the tube across was determined and the lower the linear shrinkage, the more circular or better concentricity of the part. The main effects plot below for shrinkage shows that to get better concentricity/linear shrinkage between the nodes, a lower melt temperature, cooling time and filling time with a high pack pressure was preferable. It had already been established that to achieve lower linear shrinkage, the optimum process setting should be melt temperature of 225°C, packing pressure of 15MPa, cooling time of 8s and filling time of 0.1s. However, a cooling time of 8s may not be practical, as the analysis of warpage shows it would give high warpage. Minitab was also used to find out which of the four control factors resulted in the greatest impact on linear shrinkage. This showed that pack pressure is ranked first, followed by cooling time, melt temperature and lastly the filling time. Since the 8s cooling time would lead to high warpage, a compromise had to be made. As mentioned earlier, for linear shrinkage the packing pressure was more of a contributing factor than the cooling time, so it makes sense to use 12s cooling time with 15MPa packing pressure. Comparing the nine different runs for linear shrinkage in an area graph showed that run six gave the lowest linear shrinkage. Based on the user specification, Moldex3D’s mathematical calculations obtained the optimised run. For this example, weighting for warpage was the same as for linear shrinkage. However, based on the DOE simulation results obtained, the optimum process setting for the lowest warpage was to have a cooling time of 12s and filling time of 0.3s. The optimum process for the lowest linear shrinkage, on the other hand, required a cooling time of 8s and fill time of 0.1s. Moldex3D simulation resulted in a compromise process setting (melt temperature of 225°C, packing pressure of 15MPa, cooling time of 12s and filling time of 0.1s), which was used as the optimum run. From the area graphs shown below, it can be seen that the optimised run 10 gives the lowest warpage compared to the other nine runs, while having low linear shrinkage. From the simulation in Moldex 3D, shown below, it can be seen that part warpage and concentricity of the tube has been significantly improved (warpage has been improved by 20-30% while linear shrinkage has been kept to 0.6-0.7%). It is important that designers and moulders understand that numerical results in a simulation such as this provide only a relative comparison and should not be treated as absolute. This is because there are various uncontrollable factors in the actual mould shop environment—‘noise’—which cannot be re-enacted in a simulation. However, running DOE using simulation can give the engineering team a head start on identifying which control factors to focus on and the relationship those factors have with part quality. Jasmin Wong is project engineer at UK-based Plazology, which provides product design optimisation, injection moulding fl ow simulation, mould design, mould procurement, and moulding process validation services to global manufacturing customers. She is an MSc graduate in polymer composite science and engineering and recently gained Moldex3D Analyst Certification. A version of this article originally appeared in the October 2012 issue of Injection World magazine.
Virgin polypropylene is filled with 20 to 50 percent natural cellulose fibre. The material offers a warm and silky-smooth feel, with a strength and stiffness well beyond that of most common thermoplastics. The carbon footprint is between 30 and 60 percent lower than that of standard plastics. It is used for furniture, casings for electronics, kitchenware, and kitchen tools. The plastic is odourless and has a good colourability, and the fibre content does not adversely affect the look and feel of the surface – which is often the case with other wood fibre filled plastics. The mechanical properties are dependent on the fibre content selected, but the Young's modulus is 2100 to 5600 MPa and the tensile strength 33 to 53 MPa. The cellulose fibre is sourced from sustainably managed forests and the plastic is recyclable within the normal polypropylene recycling system. Use it for a low-impact computer mouse that is pleasant to touch without the need for a soft-touch coating. You get a shoehorn and a chopstick as seen on the image. The shoehorn can have different colours. You'll get a random colour unless you Contact us and ask for colour options.
ESD-Safe WAVE LED is especially designed for use in static sensitive environments where electrostatic discharges can prove fatal for electronic components. The shade and arm are powder-coated with a metal-laced paint that measures 104Ω/sq (conductive). The remaining components are molded in a material that measures 105-106Ωsq. (static dissipative). Since the surfaces are no longer insulative, triboelectric charging results in drastically lower voltages, especially since any charge (under 50 volts) is uniformly distributed throughout the entire surface of the head assembly. Lightsource: Two 6W dimmable LED modules. 13W total energy consumed. 4600 lux at 11” focal length. CCT: 4000°K. CRI: 80. Body Material and color: ESD-Safe steel arm and die-cast aluminum shade. Fully enclosed neck design. Color: black. Optics: 3.5-(1.88X) or 5-diopter (2.25X), 6.75” x 4.5” rectangular white crown optical-quality glass lens. Secondary lenses: For additional magnification a secondary 4-, 6-, or 10-diopter STAYS lens can be attached to the primary lens. Power supply: Supplied with cable and plug. Timer and dimming: Step dimming 0-50-100%. 9/4 hour auto shut-off. Mounting: Edge clamp or weighted base.
dc.identifier.citation Yang, K. and Zhang, X. and Chao, C. and Zhang, B. and Liu, J. 2014. In-situ preparation of NaA zeolite/chitosan porous hybrid beads for removal of ammonium from aqueous solution. Carbohydrate Polymers. 107 (1): pp. 103-109. Inorganic/organic hybrid materials play important roles in removal of contaminants from wastewater. Herein, we used the natural materials of halloysite and chitosan to prepare a new adsorbent of NaA zeolite/chitosan porous hybrid beads by in-situ hydrothermal synthesis method. SEM indicated that the porous hybrid beads were composed of 6-8 µm sized cubic NaA zeolite particles congregated together with chitosan. The adsorption behavior of NH4+from aqueous solution onto hybrid beads was investigated at different conditions. The Langmuir and Freundlich adsorption models were applied to describe the equilibrium isotherms. A maximum adsorption capacity of 47.62 mg/g at 298 K was achieved according to Langmuir model. The regenerated or reused experiments indicated that the adsorption capacity of the hybrid beads could maintain in 90% above after 10 successive adsorption-desorption cycles. The high adsorption and reusable ability implied potential application of the hybrid beads for removing NH4+pollutants from wastewater. © 2014 Elsevier Ltd.
TURBOFLOW is an innovative ventilation system. Optimising the biodecontamination agent distribution, it helps to reduce the cycle duration and to simplify the validated cycle repeatability also in rooms with complex geometric layout. • Flow angle specially designed to cover any geometric layout. • Compact and wheeled central unit, easy to move and to store after use. • Satellite units and power cables housed inside the central unit simplify transport and reduce required storage space. • It is simple and straightforward to position Bioreset TURBOFLOW in the area to be treated. • Reduced cycle set-up time. • Made in ABS and AISI 304 stainless steel. • Compatible with anyV-PHP generator. • Faster and wider distribution of the decontaminating agent optimizes the overall cycle duration.
TRUPAN MDF has a homogeneous surface and excellent sanding finish. It also offers a uniform color and consistent density profile. TRUPAN MDF combines outstanding physical mechanical properties with exceptional machining characteristics, making it an ideal choice for furniture making and interior design applications. TRUPAN Standard has a homogeneous surface and an excellent sanded finish. It also offers a uniform color and consistent density profile. TRUPAN Standard combines exceptional machining characteristics with outstanding physical mechanical properties. This product is recommended for more demanding applications. Suitable for more demanding applications. TRUPAN Light has a homogeneous surface and excellent sanded finish. It also offers a uniform color and consistent density profile. TRUPAN Light combines consistent physical mechanical properties with exceptional machining characteristics and lighter weight, which it is an excellent property for logistics optimization, handling and reducing weight in the final product. Lighter weight, for logistics optimization and handling of the final product. TRUPAN Ultralight has a homogeneous surface and excellent sanded finish. This panel offers a uniform color and consistent density profile. TRUPAN Ultralight combines an extremely light weight with excellent machining characteristics and physical mechanical properties, making it an ideal choice for furniture making and moulding manufacturing. Reduced finished good transportation cost. Available in thicknesses up to 50mm. Extremely light weight with excellent machining characteristics and physical mechanical properties. Offers the perfect blend of physical-mechanical characteristics. Ideal for furniture, door skins, flooring and interior design applications. Not Sanded : Ideal for painting process. The surface characteristic provide better finishing and less consumption of paint (UV, water-based, polyurethane, nitrocellulose). Sanded : Ideal for lamination process. Flooring : Specific substrate for fl ooring products. Products suitable for each process. Made from 100% fresh pine fiber from sustainably-managed forests.
Safe and reliable operation of the systems relies on the use of online condition monitoring and diagnostic systems that aim to take immediate actions upon the occurrence of a fault. Machine learning techniques are widely used for designing data-driven diagnostic models. The training procedure of a data-driven model usually requires a large amount of labeled data, which may not be always practical. This problem can be untangled by resorting to semi-supervised learning approaches, which enables the decision making procedure using only a few numbers of labeled samples coupled with a large number of unlabeled samples. Thus, it is crucial to conduct a critical study on the use of semi-supervised learning for the purpose of fault diagnosis. Another issue of concern is fault diagnosis in non-stationary environments, where data streams evolve over time, and as a result, model-based and most of the data-driven models are impractical. In this work, this has been addressed by means of an adaptive data-driven diagnostic model. Hallaji, Ehsan, "Semi-Supervised Learning for Diagnosing Faults in Electromechanical Systems" (2018). Electronic Theses and Dissertations. 7470.
This paper presents a 3-part open-finish winding induction motor drive. The drive consists of a 3-phase induction machine with open stator section windings and dual-bridge inverter equipped from one dc voltage source. To attain multilevel output voltage waveforms, a floating capacitor bank is used for the second of the twin bridges. The capacitor voltage is regulated using redundant switching states at 0.5 of the most dc-link voltage. This explicit voltage ratio (a pair of:one) is used to form a multilevel output voltage waveform with 3 levels. A modified modulation scheme is employed to improve the waveform quality of this dual inverter. This paper additionally compares the losses in the twin-inverter system in distinction with one-sided three-level neutral point clamped converter. Finally, detailed simulation and experimental results are presented for the motor drive operating as an open-loop v /f controlled motor drive and as a closed-loop field-oriented motor controller.
A method of terminating an optical fiber drop cable with an optical fiber connector and said optical fiber connector are described herein wherein said optical fiber connector can be inserted into a port structure of a telecommunication enclosure to provide an environmentally sealed connection. The exemplary connector has a main body with an interior passageway extending from a first end to a second end of the main body and a compressible portion at the second end of the main body, a compression member attachable to the second end of the optical fiber connector over the compressible portion, an optical connection portion disposed at least to partially within the interior, and an outer housing disposed over the connection portion wherein the outer housing has an external shape mateable with a standard format optical coupling. 1. A method of terminating an optical fiber drop cable with a ruggedized optical fiber connector, the method comprising: stripping and cleaving a terminal end of the optical fiber drop cable to reveal a bare glass portion of an optical fiber securing the bare glass portion of the optical fiber in a fiber optic connector body of an optical connection portion sliding the optical connection portion through an interior passage way of a main body of the ruggedized optical fiber connector from a second end to a first end until the optical connection portion engages with the outer housing at the first end of the main body; positioning an internal sealing member at the second end of the main body; and compressing the internal sealing member longitudinally between the main body and a compression member to create an environmental seal between the cable and the main body of the ruggedized connector. 2. The method of claim 1, further comprising the step of curing an adhesive in the connection portion to secure the bare glass portion. 3. The method of claim 1, further comprising the step of activating a mechanical splice device disposed within the connection portion to secure the bare glass portion. 4. The method of claim 1, further comprising the step of screwing the compression member onto the second end of the main body to compress the internal sealing member. 5. An environmentally sealing optical fiber connector, the connector comprising: a main body having an interior passageway extending from a first end to a second end of the main body; an outer housing integrally formed on the first end of the main body, wherein the outer housing has an external shape mateable with a standard format optical coupling; a compression member attachable to the second end of the main body; an optical connection portion secured in the outer housing, wherein the interior passageway is configured to allow the optical connection portion to be slid through the main body from the second end to the first end; and an internal sealing member that is compressed longitudinally between the compression member and the main body when the compression member is attached to the second end of the main body to provide an environmental seal between the main body and an optical fiber cable onto which the optical fiber connector is mounted. 6. The connector of claim 5, wherein the outer housing is shaped to mate with an SC-format optical coupling. 7. The connector of claim 1, further comprising a port connection mechanism. 8. The connector of claim 7, wherein the port connection mechanism comprises a spring clip. 9. The connector of claim 7, wherein the port connection mechanism comprises a plurality of protrusions extending from an exterior surface of the main body and a release lever. 11. The connector of claim 10, wherein the main body comprises a first body portion housing the connector portion and a second connector portion to grip a sheath of the optical fiber cable passing therethrough. 12. The connector of claim 10, wherein the main body comprises a first body portion housing the connector portion and a second connector portion to grip the sheath of an optical fiber cable passing therethrough and an intermediate body portion that provides an environmental seal between the cable and the connector. 13. The connector of claim 5, wherein the main body comprises at least two body portions and wherein the connector further comprising an optical fiber cable terminated by the optical fiber cable connector where in the optical fiber cable includes a plurality of first strength members secured within the optical connector portion and a plurality of second strength members, wherein the second strength members are secured between two of the at least two body portions. 14. The connector of claim 5, wherein the internal sealing member comprises an elastomeric portion and a rigid portion. This application is a continuation of U.S. patent application Ser. No. 14/3690559, filed Jun. 26, 2014, now pending, which is a national stage filing under 35 U.S.C. 371 of PCT/US2012/070816, filed Dec. 20, 2012, which claims priority to U.S. Provisional Application No. 61/586,135, filed Jan. 13, 2012; U.S. Provisional Application No. 61/662,615, filed Jun. 21, 2012; and U.S. Provisional Application No. 61/718,979, filed Oct. 26, 2012; the disclosures of which are incorporated by reference in its/their entirety herein. The present invention relates to optical fiber connector for telecommunication enclosures. Specifically, the exemplary optical fiber connector can be plugged into a standard optical connector adapter through a port of the telecommunication enclosure. Telecommunication cables are ubiquitous and used for distributing all manner of data across vast networks. The majority of cables are electrically conductive cables (typically copper), although the use of optical fiber cables is growing rapidly in telecommunication systems as larger and larger amounts of data are transmitted. Additionally, as data transmissions increase, the fiber optic network is being extended closer to the end user which can be a premise, business, or a private residence. As telecommunication cables are routed across data networks, it is necessary to periodically open the cable so that one or more telecommunication lines therein may be spliced, thereby allowing data to be distributed to other cables or "branches" of the telecommunication network. At each point where a telecommunication cable is opened, it is necessary to provide a telecommunication enclosure to protect the exposed interior of the cable. The cable branches may be further distributed until the network reaches individual homes, businesses, offices, and so on. These networks are often referred to as fiber to the X (FTTX) networks which can include fiber to the premise (FTTP), fiber to the home (FTTH) and fiber to the antenna (FTTA) networks. In an FTTH network, optical fiber is brought to the end user and connected to the optical network terminal (ONT) unit mounted on a wall at the end user. The ONT converts this optical signal into conventional electrical signals to provide voice (telephone), Internet (data) and video signals to the end user. Fiber terminals are one type of telecommunication enclosure that is typically located near an end user in a FTTP network to distribute the final service to the end user. Typical fiber terminals are designed to drop services (to provide service connections) to a small number of premises having typically between four to twelve end users. The last service connection from the fiber terminal is made to the ONT, located at the end user using a drop cable. Typically, an optical connector attached to the terminal end of an optical fiber of the cable is preferred to allow quick, reliable field installation. There are two basic methods of introducing an optical fiber into a telecommunication or enclosure. In the first method, the cable passes through an inlet let device fitted into a port of the telecommunication enclosure. The optical connection interface is made within the enclosure by either an optical connector or an optical splice. Conventional watertight optical fiber connectors are described in U.S. Pat. No. 6,487,344 and U.S. Patent Publication No. 2011/0033157 which can be inserted into a port in the wall of a telecommunication enclosure. The second method is to provide a weatherproof optical connection interface in or near a wall of the telecommunication using a sealed hardened connector that is factory mounted on the terminal end of an optical fiber cable and mating optical coupling mounted within a port or in the wall of the telecommunication enclosure, such as described in U.S. Pat. Nos. 6,648,520 and 7,090,406. This method has the advantage that service connections may be made without having to open the telecommunication enclosure in the field, but cleaning the optical interface and the need for specialized parts (e.g. the mating optical coupling) makes this approach less desirable. An optical fiber connector is described herein for inserting a telecommunication cable into a telecommunication enclosure. In a first exemplary embodiment, the optical connector is a field mountable optical fiber connector wherein the connector is designed to make an optical connection when it is inserted into a port structure of a telecommunication enclosure. The exemplary field mount connector has a main body with an interior passageway extending from a first end to a second end of the main body and a compressible portion at the second end of the main body, a compression member attached to the second end of the optical fiber connector over the compressible portion, and an optical connection portion disposed at least partially within the interior passageway and having an outer housing that has an external shape mateable with a standard format optical coupling. In a second exemplary embodiment, the optical connector is a factory mountable optical fiber connector wherein the connector is designed to make an optical connection when it is inserted into a port structure of a telecommunication enclosure. The exemplary factory mount connector has a main body with an interior passageway extending from a first end to a second end of the main body and a compressible portion at the second end of the main body, a compression member attached to the second end of the optical fiber connector over the compressible portion, a optical connection portion disposed at least partially within the interior, and an outer housing disposed over the connection portion wherein the outer housing has an external shape that can be mated with a standard format optical coupling. In a third exemplary embodiment, the optical connector can be either factory of field terminated and is designed to make an optical connection when it is inserted into a port structure of a telecommunication enclosure. The exemplary optical fiber connector has a main body having an interior passageway extending from a first end to a second end of the main body, a compression member attachable to the second end of the main body to compress an internal sealing member between the second end of the main body and the compression member; and an optical connection portion disposed at least partially within the interior passageway; and having an outer housing that has an external shape mateable with a standard format optical coupling. FIGS. 14A-14D show four views of a ninth embodiment of an exemplary optical fiber connector according to an aspect of the present invention. In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments according to the invention. It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims. Exemplary embodiments herein provide an optical fiber connector for use in telecommunication enclosures. Specifically, the exemplary optical fiber connector can be plugged into a standard optical connector adapter through a port of the telecommunication enclosure. Particular advantages of the design of the present optical fiber connector include a lower cost than conventional hardened connectors which require a specialized mating optical coupling and field installable and factory installable versions of the exemplary optical fiber connector. The small size of the exemplary optical fiber connector allows more connections to be made in a similarly sized telecommunication enclosure as a result of a higher port density when compared to conventional ruggedized connector systems. In addition, the exemplary optical fiber connector can be easier to handle and faster to install than some conventional ruggedized connectors which require that the connector be screwed into a specialized receptacle in the port of a telecommunication enclosure. The exemplary fiber optic connector can be used in FTTx optical fiber networks. In one exemplary aspect, the exemplary optical fiber connector can be used to connect an end user to a remote fiber terminal in a fiber to the premise network. In another aspect of the invention, the exemplary fiber optic connector can be used to connect an antenna on a cellular tower to equipment in a base station located at the foot of the tower. The exemplary optical fiber connector may be fitted to the terminal end of a communication cable and inserted into a port in a telecommunication enclosure to provide an optical connection interface within the communication enclosure. Depending on the communication network architecture, the telecommunication enclosure may be a buried closure, an aerial closure or terminal, a fiber distribution hub or an optical network terminal in the outside plant or a wall mount communication box, fiber distribution hub, a wall mount patch panel, or an optical network terminal in premise applications. The exemplary fiber optic connector can provide an environmental seal when installed in a telecommunications enclosure. By providing an environmental seal, the inlet device can be designed to provide a watertight or water resistant seal and/or to prevent dust, bugs or any other foreign substance from entering the enclosure. In one exemplary embodiment (see e.g. Fig. IA), the telecommunication cable can be a fiber optic cable 50. The fiber optic cable typically includes a semi-rigid outer sheath or jacket 52 surrounding at least one optical fiber 54 and can include one or more strength members. The optical fibers may be enclosed in one or more loose buffer tubes or may be provided as one or more optical fiber ribbon cables. One to twelve optical fibers may reside in the loose buffer tube surrounded by a water-blocking gel or grease. Each of the ribbon cables may have from one to about twenty-four optical fibers. Each optical fiber has a polymeric coating 55 that surrounds and protects the glass fiber 56. Examples of exemplary optical fiber cables include ResiLink ADF.TM. All-Dielectric Flat Drop Cable available from Pirelli Cables and Systems (Columbia, N.C.) or EZ DROP cable from Draka (Claremont, N.C.), fiber reinforced plastic (FRP) optical cable available from Shenzhen SDG Information Company, Ltd. (Shenzhen, China), SE*-LW* FTTH All Purpose Optical Drop Cables and SE-8 PureAccess.TM. Single Mode Optical Fiber each of which is available from Sumitomo Electric (Research Triangle Park, N.C.), Mini DP Flat Drop Cable available from OFS (Northcross, Ga.). The strength members may be either semi-rigid rods or a collection of loose fibers or floss, e.g. made of aramid fibers or glass. In an alternative aspect, the communication cable can be an electrical cable in which case the connection portion of the exemplary connector will be an appropriate style of electrical connector such as an RJ-style plug connector, a USB connector or a coaxial connector, for example. Referring to FIGS. 1A-1D, an exemplary optical fiber connector 100 includes a main body 110 having a first end 111 and a second end 112, a compression member 150 attachable to the second end of the main body and an optical connection portion 120 attachable to the first end of the main body. The compression member applies a radial force to the second end of the optical fiber connector's main body. The optical fiber connector 100 may be formed of plastic by conventional methods, for example by injection molding. The main body 110 includes an internal sealing member 140 shaped to be received within the second end of the main body, and an external sealing member 145 disposed near the first end of the main body. The main body may be generally cylindrical in shape and includes an interior passageway 113 that extends along the length of the main body from the first end 111 to the second end 112 of the main body. The main body includes a passage entry 114 at the first end 111 of the interior passageway and a passage exit (not shown) at the second end 112 of the interior passageway 113 that may be configured to accommodate certain categories of telecommunication cables including single fiber drop cables and/or multi-fiber cables. The passage entry 114 of the interior passageway 113 is configured to accept and secure optical connection portion 120 to/in the first end 111 of the main body. As such, the passage entry can be shaped to closely conform to an outer perimeter portion of the optical connection portion. As shown in FIGS. 1A and 1B, the passage entry has a rectangular opening configured to closely match the outer perimeter portion 131 of the outer housing 130 of optical connection portion 120. The opening of the passage entry can alternatively be circular, elliptical, oval, hexagonal or another polygonal shape. In an exemplary aspect, the first end of the main body will reside inside the telecommunication enclosure when the optical fiber connector has been fully inserted into a port of a telecommunication enclosure, and the second end of the main body may be located within the port of the telecommunication enclosure when the optical fiber connector has been fully inserted into a port of a telecommunication enclosure. In another exemplary aspect, the second end of the main body can be disposed within the port structure of a telecommunication enclosure such that only a portion of the connection interface extends into the cavity of the enclosure. While in yet another embodiment, the standard telecommunication optical coupling can be mounted such that it partially extends into the port structure of the telecommunication enclosure resulting in the optical connection interface being proximate to the exit passageway of the port entry structure. In an exemplary embodiment, the main body 110 can have a gripping surface 116 on the external surface of the main body. The external gripping surface may have a hexagonally shaped cross-section to facilitate gripping of the cable securing device with a tool or by hand. The gripping surface region may have other geometric configurations such as a cylindrical shape, a rectangular shape or other polygonal shape. Additionally, the gripping surface may be textured (e.g. a ridged or cross-hatched texture) to further facilitate gripping of the cable securing device. A groove 117 may be located between external gripping surface 116 and the first end 111 of main body 110 to receive an external sealing member 145 such as an o-ring. This external sealing member can provide an environmental seal between the optical fiber connector and a port of a telecommunication enclosure when the optical fiber connector is fully seated therein. In an alternative aspect, the external sealing member and the main body of the optical connector can be formed using a 2K molding process. The main body 110 can have an external threaded portion 125 located between external gripping surface 116 and the second end 112 of the main body. The external threaded portion 118 cooperates with a corresponding internal threaded portion 158 of compression member 150 to cause a compressible portion 115 of the main body 110 to conform to an outer surface of the communication cable fitted in the optical fiber connector. In an alternative aspect, the compression member may be attached to the second end of the main body by an interference fit or other mechanical attachment method. The compressible portion 115 is formed at the second end 112 of the main body. The compressible portion 115 may be reduced in size (diameter) when an external radial force is exerted on it such as by application of compression member 150. The compressible portion 115 can have a plurality of spaced apart projections 115a extending from the main body near the second end thereof. In an exemplary aspect, each projection can have a barb (not shown) and/or a plurality of teeth (not shown) disposed near its interior end (i.e. the side of the projection that faces the interior passageway 113 of the main body). The barbs can penetrate the sheath of a telecommunication cable when compression member 150 is secured to the second end of the main body. The compression member can exert a radial force on the spaced apart projections 115a pushing them inward and pushing the barbs into sheath of the telecommunications cable. In an exemplary aspect, the compressible portion 115 can gave a generally truncated conical shape with the compression member having a corresponding shape to cause the spaced apart projections to be squeezed together such that they exert a compressive force around the cable and/or internal sealing member seated in the interior passageway of the compression portion. In one exemplary aspect, an internal sealing member 140 may be fitted into the interior passageway 113 in the compressible portion 115 of the main body 110 to improve the sealing and cable gripping capability of the optical fiber connector to a telecommunication cable as may be needed in buried, subterranean or other outdoor telecommunication enclosure installations. The telecommunication cable 50 passes through the internal sealing member 140 when the cable is installed into the optical fiber connector 100. The tightening of the compression member over the collapsible portion of the main body compresses the internal sealing member. Additionally, the gripping action of the internal sealing member on the cable can help secure connector portion 120 to main body 110 as will be described in more detail below. In premise applications, such as insertion of cables into junction boxes within a building, an optical fiber connector may have reduced environmental sealing requirements. In these instances, the internal sealing member can be omitted. In this case, the compressible portion of the main body can directly grip the telecommunication cable inserted therethrough. Compression member 150 has an interior chamber 153 extending between the first side 151 and a second side 152. The interior chamber 153 has a first opening 154 at the first end 151 to accept the second end 112 of main body 110. The chamber 153 has a smaller second opening (not shown) at the second end 152 of compression member 150 to accommodate the passage of a telecommunication cable therethrough. The chamber 153 has an internal threaded portion 158 that can correspond to the external thread 118 on the second end of the main body to allow the compression member to be secured to the main body of the optical connector. In an exemplary embodiment, compression member 150 can have a gripping surface 157 on its external surface that corresponds to the position of the internal threaded portion 158. The external gripping surface may be a hexagonally shaped cross-section to facilitate gripping of the cable securing device with a tool or by hand. The gripping surface region may have other geometric configurations such as a circular cross-section, a rectangular cross-section or other polygonal cross-section. Additionally, the gripping surface may be textured (e.g. a ridged or cross-hatched texture) to further facilitate gripping of the cable securing device. In addition, compression member 150 can include an integral bend control boot 155 disposed on the second end 152 of the compression member. The bend control boot prevents the telecommunication cable from exceeding its minimum bend radius which could result in degradation of the signal being carried on the telecommunication cable. In an alternative aspect, a compression member that does not include a bend control boot can be used with low bend radius cables or bend resistant cables. Examples of compression members that do not include bend control boots can be found in FIGS. 4A, and 4C-4E of commonly owned U.S. Patent Publication No. 2011/0033157, incorporated herein by reference. Optical connection portion 120 of the exemplary optical fiber connector can be secured to the first end 111 of main body 110. In the exemplary embodiment shown in FIGS. 1A-1D, the combination of optical connection portion 120 and outer housing 130 can be a field mountable fiber optic connector. Utilizing a field mountable fiber optic connector in optical connector 100 allows for a sealed optical connection to be made by plugging optical connector 100 into a standard optical connector adapter through a port of the telecommunication enclosure. An exemplary field mountable fiber optic connector is described in commonly owned U.S. Patent Publication No. 2011/0044588, incorporated herein by reference in its entirety. Field mountable fiber optic connector useable as the connection portion with exemplary connector 100 includes an outer housing 130 that is configured to mate with a standard optical coupling, a backbone 121 to retain a collar body (not shown) within the outer housing, and a boot 129. Field mountable fiber optic connector (i.e. outer housing) is configured as having an SC format. However, as would be apparent to one of ordinary skill in the art given the present description, optical connection portions (i.e. the outer housings and corresponding internal components of standard optical fiber connectors) having other standard formats, such as MT, MPO, ST, FC, and LC connector formats, can also be used with the exemplary connector structure described herein and are considered to be within the scope of the present disclosure. The collar body includes a fiber stub secured in ferrule 124 by an epoxy or other suitable adhesive, and a mechanical splice device. The ferrule can be formed from a ceramic, glass, plastic, or metal material to support the optical fiber stub inserted and secured therein. In a preferred aspect, ferrule 124 is a ceramic ferrule. The optical fiber stub is inserted through ferrule 124, such that a first fiber stub end slightly protrudes from or is coincident or coplanar with the end face of the ferrule. Preferably, this first fiber stub end is factory polished (e.g., a flat or angle-polish, with or without bevels). A second end of the fiber stub extends part-way into the interior of the connector 100 and is spliced to the terminal end of optical fiber 56 of an optical fiber cable (such as optical fiber cable 50). Preferably, the second end of the fiber stub can be cleaved (flat or angled, with or without bevels). The fibers stub can comprise standard single mode or multimode optical fiber, such as SMF 28 (available from Corning Inc.). Ferrule 124 can be secured to the collar body via an epoxy or other suitable adhesive. The splice device is held within a splice element housing portion of the collar body. In an exemplary embodiment, splice device can be a mechanical splice device (also referred to as a splice), such as a 3M.TM. FIBRLOK.TM. mechanical fiber optic splice device, available from 3M Company, of Saint Paul, Minn. The backbone can include a fiber jacket clamping portion to clamp a jacket portion that surrounds a portion of the terminated optical fiber upon actuation. The boot can actuate the fiber jacket clamping portion of the backbone upon attachment to the backbone. The optical fiber connector can be terminated in the field without the need to use a separate termination platform or tool. Exemplary optical fiber connector 100 is assembled by first sliding compression member 150, the internal sealing member 140 and boot 129 over the fiber cable 50 for later use. Optical connection portion 120 can be mounted onto the terminal end of optical fiber cable 50 by a method that is analogous to the assembly method of the field mountable connector described in U.S. Patent Publication No. 2011/0044588 with the exception that outer housing is not attached to the backbone at this point in time. Optical connection portion 120 can be partially pre-assembled such that the collar body with ferrule 124 secured therein is held within backbone 121. This step may be performed prior to the field termination process or during the field termination process. For field termination, optical fiber cable 50 is prepared by cutting of a portion of the fiber cable jacket 52 and stripping off a coated portion 55 of the optical fiber 54 near the terminating fiber end to leave a bare glass fiber portion 56 and cleaving (flat or angled) the fiber end to match the orientation of the pre-installed fiber stub. In an exemplary aspect, about 50 mm of the jacket 52 can be removed, leaving about 25 mm of stripped fiber. For example, a commercial fiber cleaver such as an Ilsintech MAX CI-01 or the Ilsintech MAX CI-08, available from Ilsintech, Korea (not shown) can be utilized to provide a flat or an angled cleave. No polishing of the fiber end is required, as a cleaved fiber can be optically coupled to the fiber stub in the splice device. The prepared end of optical fiber cable 50 is inserted through the rear end of the backbone 121 of the partially pre-assembled optical connection portion. In this manner, the prepared fiber end can be spliced to the fiber stub with the mechanical splice device housed in the collar body within backbone 121. The fiber cable 50 is continually inserted until the coated portion 55 of the fiber begins to bow (which occurs as the end of fiber 56 meets the fiber stub with sufficient end loading force). The splice device is actuated while the fibers are subjected to an appropriate end loading force. The fiber jacket can then be released, thereby removing the fiber bow. The boot 129 (which is previously placed over fiber cable 50) is then pushed axially toward the backbone 121 and screwed onto the backbone mounting section to secure the boot in place to complete the mounting of exemplar optical connection portion 120 onto optical fiber cable 50. Next, optical connection portion 120 is slid through interior passage way 113 of main body 110. Outer housing 130 is snapped on the front end of the backbone 121 of optical connection portion 120 by sliding in a direction indicated by arrow 199 until the outer housing is secured in place as shown in FIG. 1B. In an alternative aspect, the main body of the connector can be threaded onto the optical cable before the optical connection portion is mounted on the terminal end of the optical fiber. The main body 110 of optical connector 100 is slid along optical fiber cable in a direction indicated by arrow 198 until a lip 133 the outer housing 130 abuts against passage entry 114 of the main body 110 as shown in FIG. 1C. The internal sealing member is pushed along optical fiber cable 50 and slid into the second end 112 of the main body and the compression portion is slid forward and compression member 150 is secured to the main body by engaging internally threaded portion 158 of the compression member with the corresponding external thread portion 118 on the second end 112 of the main body 110 to yield the fully assembled optical connector 100 as shown in FIG. 1D. The tightening of the compression member 150 over the collapsible portion of the main body compresses the internal sealing member which anchors the main body between the lip of the outer shell of connector portion 120 and the internal sealing member gripping the cable within the main body. In an alternative embodiment, the optical connection portion can be adhesively connected to the main body or mechanically secured to the main body. Field mountable optical connector 100 can advantageously allow the length of the optical fiber cable to be adjusted in the field to avoid waste and the need to store excess lengths of unneeded cable. FIGS. 2A and 2B are two views showing the securing the exemplary optical fiber connector 100 into a standard optical connector coupling 1020 within a portion of a telecommunication enclosure 1000 when the optical connector is inserted through a port of the enclosure. The telecommunication enclosure can be a terminal enclosure such as BPEO S1 16 S7 (Stock number N501714A) available from 3M Company (St. Paul, Minn.). The exemplary terminal closure 1000 of FIGS. 2A and 2B includes a base 1001 and a cover or main body (not shown) removably securable to the base. The base of the telecommunication enclosure shown in the figures includes a bottom wall 1002 and a plurality of side walls 1004 extending approximately perpendicularly from the bottom wall and adjoined to one another at the corners of the enclosure. At least one of the side walls can include at least one port structure 1010 for receiving a fiber optic connector of the present invention. The exemplary port structure can be a hexagonal port structure having an exterior portion 1011 disposed outside of the enclosure. The exemplary port structure can have other geometric configurations such as a generally cylindrical or tubular shape, a rectangular shape or other polygonal shape. When optical connector 100 is fully inserted into the port structure 1010, the external sealing member 145 of the optical connector provides a water tight seal between the internal circumference of the port structure and the optical connector. The internal sealing member housed within the main body of the connector provides a seal between the main body of the connector and the optical fiber cable passing therethrough. A standard telecommunication optical coupling 1020 can be attached to a standard patch panel 1040 anchored to the back wall 1002 of the telecommunication enclosure 1000 by a mechanical fastener (not shown) or other anchoring mechanism. The patch panel is disposed proximate to the side wall 1004 with the port structures 1010. The standard optical couplers are mounted in the patch panel such that they align with the port structures of the enclosure allowing an optical connection to be made when optical connector 100 is fully inserted into the port structure. An exemplary factory mountable optical fiber connector 200 is shown in FIGS. 3A-3D. Optical fiber connector 200 is similar to the main body of the field mountable optical fiber connector 100 (FIGS. 1A-1D) described previously, except that the optical connection portion 220 comprises a factory mounted optical connection portion. Optical fiber connector 200 includes a main body 210 having a first end 211 and a second end 212, a compression member 250 attachable to the second end of the main body and an optical connection portion 220 attachable to the first end of the main body. The compression member applies a radial force to the second end of the optical fiber connector main body. The optical fiber connector 200 may be formed of plastic by conventional methods, for example by injection molding. The main body includes an internal sealing member 240 shaped to be received within the second end of the main body, and an external sealing member 245 disposed near the first end of the main body. The main body may be generally cylindrical in shape and includes an interior passageway 213 that extends from a passage entry 214 at the first end 211 of the main body to a passage exit (not shown) at the second end 212 of the main body. The passage entry 214 is configured to accept and secure optical connection portion 220 to/in the first end 211 of the main body. As such, the passage entry can be shaped to closely conform to an outer perimeter portion 231 of the optical connection portion. As shown in FIGS. 3A and 3B, the passage entry has a rectangular opening configured to closely match the outer perimeter portion 231 of the outer housing 230 of optical connection portion 220. The opening of the passage entry can alternatively be circular, elliptical, oval, hexagonal or another polygonal shape. In addition, one or more catches 219 can be disposed within interior passageway 213. The catches which engage with openings or detents 235 on the outer housing 230 to secure the optical connection portion 220 to the first end 211 of main body 210 of optical connector 200 when the optical connection portion is disposed in the outer housing. In an exemplary embodiment, the main body 210 can have a gripping surface 216 on the external surface of the main body. The gripping surface may be textured (e.g. a ridged or cross-hatched texture) to further facilitate gripping of the cable securing device. An external sealing member 245 can be disposed in a groove 217 in the main body external gripping surface 216 and the first end 211 of main body 210. This external sealing member can provide an environmental seal between the optical fiber connector and a port of a telecommunication enclosure when the optical fiber connector is fully seated therein. The main body 210 can further include an external threaded portion 218 located between external gripping surface 216 and the second end 212 of the main body 210. The external threaded portion 218 cooperates with a corresponding internal threaded portion 258 of a compression member 250, which is analogous to compression member 150 shown in FIGS. 1A-1D. The compression member causes compressible portion 215 of the main body 210 to conform to an outer surface of the communication cable and/or the internal sealing member when the compression member is secured to the main body. The optical connection portion 220 of exemplary optical fiber connector 200 can be a factory mounted fiber optic connector body 221 that is secured to the terminal end of fiber optic cable 50. For example, optical connection portion 220 is configured to engage with an SC format outer housing 230. However, as would be apparent to one of ordinary skill in the art given the present description, optical connection portion and the outer housings could be configured to have other standard formats, such as MT, MPO, ST, FC, and LC connector formats. Exemplary optical fiber connector 200 is assembled by first sliding compression member 250 and the internal sealing member 240 over the fiber optic cable 50 for later use. The terminal end of the optical fiber cable is stripped and cleaved to reveal the bare glass portion 56 of optical fiber 54. This prepared end of the optical fiber cable can be inserted into the fiber optic connector body 221 of optical connection portion 220 until the terminal end of the bare glass portion extend beyond the end face of ferrule 224. The optical fiber can be adhesively or mechanically secured in fiber optic connector body 221. The excess length of fiber protruding from the end face of the fiber is removed. The end face of the fiber can be finished using a standard factory polish technique (e.g., a flat or angle-polish, with or without bevels). A mini-boot 229 is attached to the back end of the fiber optic connector body 221 to facilitate handling of the optical connection portion 220 through the remainder of the optical connector assembly process. Next, optical connection portion 220 is slid through interior passage way 213 of main body 210. Outer housing 230 is snapped on the front end of the fiber optic connector body 221 of optical connection portion 220 by sliding in a direction indicated by arrow 299 until the outer housing is secured in place as shown in FIG. 1B. Alternatively, the main body can be pre-threaded onto the optical fiber cable prior to the mounting of the optical connection portion onto the terminal end of the optical fiber. The main body 210 of optical connector 200 is slid along optical fiber cable in a direction indicated by arrow 298 until the catches 219 within the interior passageway 213 engage with the detents 235 on the outer housing 230 of the optical connection portion 220. The internal sealing member is pushed along optical fiber cable 50 and slid into the second end 212 of the main body and compression member 250 is secured to the main body by engaging internally threaded portion 258 of the compression member with the corresponding external thread portion 218 on the second end 212 of the main body 210 to yield the fully assembled optical connector 200 as shown in FIG. 3D. The tightening of compression member 250 over the collapsible portion of the main body compresses the internal sealing member and secures the main body to the sheath of the optical fiber cable 50. In another aspect of the current invention, the main body and compression member of the present invention can be used with a factory prepared pre-terminated optical fiber cable having a standard factory mounted optical connector (e.g. a SC connector, and LC connector, and FC connector, etc.). In this aspect, the standard factory mounted optical connector is analogous to combination of (the optical connection portion with the outer housing attached). The outer housing can be removed from the connection portion so that the connection portion can be fed through the compression member and the main body. The outer housing is then reattached over the connection portion and the main is slid forward until a lip on the outer housing abuts against the passage entry of the main body. An internal sealing member having a longitudinal slit can be slipped over the cable and slid into the second end of the main body. The compression member is attached over the second end of the main body to yield an optical fiber connector of the current invention. FIG. 4 shows another embodiment of an exemplary factory mountable optical fiber connector 300. Optical fiber connector 300 is similar to factory mounted optical fiber connector 200 (FIGS. 3A-3D) described previously, except that in this embodiment the outer housing 330 is integrally formed with main body 310. Connector 300 is assembled by first sliding compression member 350 and the internal sealing member, if used, over the fiber optic cable 50 for later use. Optical connection portion 320 is mounted onto optical fiber cable in a method similar to that described with respect to optical fiber connector 200. Next, optical connection portion 320 is slid through interior passage way (not shown in FIG. 4) of main body 310 and snapped in to outer housing 330 which is integrally formed on the first end of the main body. Compression member 350 is slid forward and secured to the main body by engaging internally threaded portion 358 of the compression member with the corresponding external thread portion 318 on the second end 312 of the main body 310 to yield the fully assembled optical connector 300. The integrally formed main body and outer housing can also be utilized with a field mount connector similar to that shown in FIG. 1A-1D to reduce the number of parts that the field technician has to keep of track when installing the connector in the field. In FIG. 5, alternative connector 400 includes an optical connection portion 420 that can be threadably engaged with main body 410. Optical connector 400 has a shorter outer housing 430 which leaves a portion of optical connection portion 420 opposite the ferrule 424 exposed. The exposed portion of the optical connection portion 420 has an external thread 426 disposed on the end opposite ferrule 424. The external thread on the exposed portion of the optical connection portion is configured to engage with an internal thread 419 disposed in the interior passageway 413 that extends through the main body. In this embodiment, the compression member 450, the internal sealing member, if used, and main body are slid over the fiber cable 50 before terminating the optical fiber cable. The cable is prepared and the optical connection portion can be mounted on the fiber by either adhesively or mechanically securing the optical fiber within the optical connection portion. The end face of fiber can be factory polished with either a flat or beveled finish. The main body 410 is moved forward over the back end of the optical connection portion 420 until the threads 419 within the interior passageway 413 of the main body engage with the external threads 426 of the optical connection portion. The main body can then be screwed onto the optical connection portion until it is securely engaged. Next, the internal sealing member, if used, can be slid into the second end of the main body and the compression portion is slid forward and compression member 450 is secured to the main body by engaging internally threaded portion of the compression member with the corresponding external thread portion 418 on the second end of the main body 410 to yield the fully assembled optical connector 400. FIGS. 6A and 6B show a method of securing the exemplary optical fiber connector (e.g. optical connectors 100, 200, 300, 400) having a port connection mechanism to a standard optical connector adapter through a port of the telecommunication enclosure. The figures show a portion of a telecommunication enclosure 1100. The telecommunication enclosure can be a terminal enclosure such as BPEO closure, a fiber dome closure, or another suitable outside plant fiber closure, each of which is available from 3M Company (St. Paul, Minn.) as well as other vendors. The portion of the telecommunication enclosure 1100 shown in the figures includes a first wall section 1102 and a second wall section 1104 extending approximately perpendicularly from the first wall section. The second wall section is shown having one port structure 1110 for receiving a fiber optic connector of the present invention. The exemplary port structure can be a cylindrical port structure having an exterior portion 1111 disposed outside of the enclosure and an interior portion 1112 extending into the enclosure from the second wall. The exemplary port structure can have other geometric configurations such as a hexagonal prism, a rectangular prism or other polygonal prism. When optical connector 100 is inserted into the port structure 1110, the external sealing member 145 of the optical connector provides an environmental seal between the internal circumference of the port structure and the optical connector. The internal seal housed within the main body of the connector provides a seal between the main body of the connector and the optical fiber cable passing therethrough. A standard telecommunication optical coupling 1120 can be attached to the top of the interior potion of the port structure by a mechanical fastener such as a screw 1130 or rivet that pass through fastening holes located in the central flange of the optical coupling, by an adhesive or via an interference fit wherein the top lip of the port structure has a pair of posts to engage with the fastening holes of the standard telecommunication optical coupling. The port structure 1110 also includes a pair of slots or channels 1113 disposed on opposite sides of the exterior portion of the port structure. When an exemplary optical fiber connector 100 is installed in the port structure and engaged with the standard optical coupling, a port connection mechanism (i.e. a spring clip 1140 or staple) can be inserted in the slots to secure the exemplary fiber optic connector within the port structure. In an exemplary aspect, a U-shaped spring clip can be used as shown in the figure having two spaced apart arms extending from a joining section. When the spring clip is installed in the slots of the port structure as shown in FIG. 6B, the arms embrace the optical connector between the gripping surface 116 of the main body 110 and the compression member 150. This optical connector retention method helps transfer any loads exerted on the optical fiber cable to the port structure of the telecommunication enclosure to provide a stable optical connection. FIG. 7A shows yet another embodiment of an optical connector 500 that includes a port connection mechanism. Optical fiber connector 500 includes a main body 510, a compression member 550 attachable to the second end of the main body and an optical connection portion (not shown) contained within an outer housing 530 that is attachable to the first end of the main body. Optical fiber connector 500 is similar to optical fiber connectors 100, 200 and or 300 (FIGS. 1A-1D, 3A-3D and 4) described previously, except that in this embodiment the main body 510 includes an integrally formed port connection mechanism 560. The port connection mechanism 560 includes a plurality of protrusions 562 extending from the exterior surface of the main body that are configured to mate with a receiving element 1217 within the port structure 1210 of telecommunication enclosure 1200 as shown in FIG. 7B and a release lever 565 which is configured to move the receiving elements away from the main body 510, freeing the protrusions so that connector 500 can be easily removed from the port structure. Release lever 565 can be connected to the main body of optical connector 500 by its fulcrum 566. A release arm 567 extends toward the front of the connector and an actuation arm extends from the fulcrum toward the back end of the connector near the compression member 550. When a force is applied to the actuation arms 565 in a direction indicated by arrows 595 the release lever pivots 567 around the fulcrum 566 moving the release arms away from the main body. The release arms engage with the receiving elements, pushing them away from the main body and disengaging the receiving elements from the protrusions to allow optical connector to be extracted from port structure 1210. FIGS. 8A and 8B show optical fiber connector 500 mounted in a different telecommunication enclosure port structure 1310. Telecommunication enclosure 1300 of FIGS. 8A and 8B can be an optical network terminal, a network interface device or a distribution box. An exemplary distribution box that can utilize this port structure is described in PCT Publication No. WO 2012/074688, and is incorporated herein by reference. The telecommunication enclosure 1300 of which only a portion is shown in FIGS. 8A and 8B includes a bottom wall 1302, a plurality of side walls 1304 extending from the base, a cover (not shown) which is removably securable to the base wherein at least one of the side walls includes a removable side wall portion 1303. In the particular embodiment, removable side wall portion 1303 includes a port structure 1310 for receiving a fiber optic connector of the present invention. The exemplary port structure can be a cylindrical port structure having an interior portion 1312 that extends into the enclosure from the side wall when the removable wall portion is installed in the enclosure. In an alternative aspect, removable side wall portion 1303 includes a plurality of port structures. The exemplary port structure can have other geometric configurations such as a hexagonal prism, a rectangular prism or other polygonal prism. The internal features of the port structure can be similar to port structure 1210 shown in FIG. 7B if the port structure is to be used in combination with fiber optic connector 500. The side walls 1304 can include a number of openings 1305 having and inwardly facing channel 1306 formed around the perimeter of the opening to accept the removable wall segments. An optional gasket 1308 can be disposed in the bottom of channel 1306 when a high degree of environmental protection is needed. FIG. 8A shows a view of a portion of a side wall 1304 having the removable wall portion 1303 removed from opening 1305, while FIG. 8B shows the removable wall segment installed in channel 1305 of sidewall 1304. FIGS. 9A-9C show three views of another embodiment of an exemplary optical fiber connector 600. Optical fiber connector 600 includes a main body 610 having a first end 611 and a second end 612, a compression member 650 attachable to the second end of the main body and an optical connection portion 620 attachable to the first end of the main body. The compression member anchors an internal sealing member 640 between the compression member and the second end of the main body to provide an environmental seal between the optical fiber connector 600 and the telecommunications cable to which it is connected. Optical fiber connector 600 may be formed of plastic by conventional methods, for example by injection molding. The main body 610 may be generally cylindrical in shape and includes an interior passageway 613 (FIG. 10B) that extends along the length of the main body from the first end 611 to the second end 612 of the main body. The main body includes a passage entry 614 at the first end 611 of the interior passageway and a passage exit (not shown) at the second end 612 of the interior passageway 613 that may be configured to accommodate certain categories of telecommunication cables including single fiber drop cables and/or multi-fiber cables. The passage entry 614 of the interior passageway 613 is configured to accept and secure optical connection portion 620 to/in the first end 611 of the main body 610. As such, the passage entry can be shaped to closely conform to an outer perimeter portion of the optical connection portion. In the exemplary embodiment of FIGS. 9A-9B, the main body 610 can have a gripping surface 616 on the external surface of the main body similar to that already described for optical fiber connector 100 of FIGS. 1A-1D. A groove 617 may be located between external gripping surface 616 and the first end 611 of main body 610 to receive an external sealing member 645 such as an o-ring. This external sealing member can provide an environmental seal between the optical fiber connector and a port of a telecommunication enclosure when the optical fiber connector is fully seated therein. The main body 610 can have an external connection portion 618 located between external gripping surface 616 and the second end 612 of the main body 610. The external connection portion 618 includes at least one bayonet channel 618a that cooperates with at least one internal peg 658 (FIG. 10B) disposed within the open end of compression member 650. In the exemplary embodiment of optical fiber connector 600, the main body includes two bayonet channels 618a, 618a' (FIG. 10B) disposed on opposite sides of the main body and compression member 650 has two internal pegs 658 (although only one can be seen in the figures) that are configured to engage with the bayonet channels. Thus the compression member (having the internal sealing member disposed therein) is slid over the second end of the main body to secure the compression member to the main body. The internal pegs ride in the bayonet channel as the compression member is pushed forward (as indicated by directional arrow 695 in FIG. 10B) over the second end of the main body and is rotated (as indicated by directional arrow 696 in FIG. 10B) to secure the compression member to the second end of the main body. The internal sealing member is compressed longitudinally between the compression member and the second end of the main body as shown in FIG. 9C. Utilizing a bayonet style securing mechanism as described above may be advantageous in reducing torsional stresses applied to the telecommunication cable when the compression member is secured to the main body of the exemplary optical fiber connector. In one exemplary aspect, an internal sealing member 640 can include an elastomeric portion 641 and a segmented rigid portion 643 as shown in FIG. 10C. The elastomeric portion provides the sealing and cable gripping capability to the optical fiber connector to a telecommunication cable passing through the sealing member and the segmented rigid portion serves as skids to allow the compression member to rotate freely when the compression member is being secured to the second end of the main body of the exemplary optical fiber connector. Additionally, internal sealing member 640 may have a radial slit 642 to allow the telecommunication cable to be slipped into the internal sealing member from the edge of the sealing member. When this is done the segmentation of the segmented rigid portion allows the sealing member to flex so the slit can be opened to allow insertion. The internal sealing member can be formed by a two step molding process when the segmented rigid portion is formed of a rigid plastic material such as poly carbonate or polybutylene terephthalate, for example, or by an insert molding process when the rigid portion is formed of a rigid plastic material or metal. In an exemplary aspect, the elastomeric portion of the internal sealing member can be formed from one of an ethylene propylene diene monomer (EPDM) rubber, a silicone rubber, a polyurethane elastomers or rubbers, natural rubber, a fluoroelastomer or other suitably soft resilient materials. In an alternative aspect, the segmented rigid portion can be replaced by a slit ring made of either plastic or metal that can either be integrally formed with the internal sealing member or can be a separate piece which is positioned between the internal sealing member and the compression member during assembly of the exemplary connector. Referring to FIG. 10b, compression member 650 has an interior chamber 653 extending between the first side 651 and a second side 652. The interior chamber 653 has a first opening 654 at the first end 651 to accept the second end 612 of main body 610. The interior chamber 653 has a smaller second opening (not shown) at the second end 652 of compression member 650 to accommodate the passage of a telecommunication cable therethrough. The compression member can further include at least one internal peg 658 disposed within interior chamber 653 that cooperates with a corresponding bayonet channel 618a on the main body 610 of the optical fiber connector to secure the compression member to the main body and compress the internal sealing member therebetween. In an alternative aspect, the bayonet channels can be formed within interior chamber of the compression member and the corresponding peg(s) that mate with the bayonet channels can be formed near the second end of the main body. Thus the positioning of the bayonet channels and corresponding pegs should not be considered a limitation to exemplary optical connector 600. In addition, compression member 650 can further include an integral bend control boot 655 disposed on the second end 652 of the compression member. The bend control boot prevents a telecommunication cable from exceeding its minimum bend radius which could result in degradation of the signal being carried on the telecommunication cable. The bend control boot can include a tie bar 655a to provide strain relief to the telecommunication cable passing through the optical fiber connector when the telecommunication cable is attached to the tie bar by a cable tie or other securing mechanism. The optical connection portion 620 can be secured to the main body 610 of optical fiber connector 600 via a threaded attachment mechanism. Optical connection portion 620 can include an external connection portion having an external thread 628 adjacent to the second end 612 thereof and an outer housing 630 at the first end 611 of the optical connection portion. The outer housing is configured to hold the internal components of a standard optical fiber connector (e.g. the backbone 121, collar body (not shown), ferrule 124 and boot 129) within the outer housing. For example, optical connection portion 620 is configured with an SC format outer housing 630. However, as would be apparent to one of ordinary skill in the art given the present description, optical connection portion and the outer housings could be configured to have other standard formats, such as MT, MPO, ST, FC, and LC connector formats as well as utilizing other connector styles such as factory mounted connectors. The external thread 628 of the optical connection portion 620 is configured to engage with an internal thread 619 disposed in the interior passageway 613 that extends through the main body 610 of optical connector 600. In the exemplary aspect shown in FIGS. 9A-C, and 10A-B, a coarse external thread 628 and corresponding internal thread 619 are used to provide for a secure attachment of the optical connection portion to the main body while at the same time minimizing the torsional effects on the cable within the connection due to this attachment. In an exemplary aspect, the optical connection portion can be attached to the main body by engaging the threads and rotating the optical connection portion 120.degree. with respect to the main body, although other degrees of rotation are a matter of design choice. In an exemplary aspect, optical connection portion 620 can further include a positioning rib that ensures that the optical connection portion is inserted into the main body 610 in the proper orientation when engaging the external threads disposed on the optical connection portion with the internal threads within the main body. In addition, optical connection portion 620 can have an abutment plate 623 disposed between outer housing 630 and the external connection portion. The abutment plate 623 ensures proper positioning of the connection portion with respect to the main body of the optical fiber connector. Abutment plate 623 can have a plurality of detents 624 extending from its surface that is adjacent to the external connection portion of the optical connection portion. The detents assist the craft in knowing when the optical connection portion is properly mounted in to the main body of the audible click by providing an audible click when the detents come to rest in matching divots 614b formed in the outward facing surface of passage entry 614. The abutment plate 623 can further include a locking nose 626 projecting from the edge 627 of the abutment plate. The locking nose is configured to engage with a notch 614a in the lip of the passage entry 614 to secure the optical connection portion to the main body. In an exemplary aspect, locking nose 626 can be disposed on a flexible bridge 625 to allow clearance for the nose to slide within the lip of the passage entry when the optical connection portion is secured to the main body. Exemplary optical fiber connector 600 is assembled by first sliding compression member 650, the internal sealing member 640 and boot 129 over the fiber cable 50 for later use. For field termination, optical fiber cable 50 is prepared by cutting of a portion of the fiber cable jacket 52 and stripping off a coated portion 55 of the optical fiber 54 near the terminating fiber end to leave a bare glass fiber portion 56 and cleaving (flat or angled) the fiber end to match the orientation of the pre-installed fiber stub, as described previously. The prepared end of optical fiber cable 50 is inserted through the rear end of the backbone 121 of a partially pre-assembled optical connection portion 620 that includes the collar body with ferrule 124 secured within the backbone. In this manner, the prepared fiber end can be spliced to the fiber stub with the mechanical splice device within the collar body within backbone 121. The fiber cable 50 is continually inserted until the coated portion of the fiber begins to bow (which occurs as the end of fiber meets the fiber stub with sufficient end loading force). The splice device is actuated while the fibers are subjected to an appropriate end loading force. The fiber jacket can then be released, thereby removing the fiber bow. The boot 129 (which is previously placed over fiber cable 50) is then pushed axially toward the backbone 121 and screwed onto the backbone mounting section to secure the boot in place to complete the mounting of the partially pre-assemble optical connection portion onto optical fiber cable 50. The partially pre-assemble optical connection portion is then secured in outer housing 630 to complete the assembly of connection portion 620. Referring to FIGS. 11A-11C, the main body 610 is moved forward over the back end of the optical connection portion 620 until abutment plate 623 is adjacent to the passage entry 614 (best seen in FIG. 10B). The optical connection portion is rotated in the direction indicated by arrow 697. Locking nose 626 slides within the passage entry until it encounters deflection wedge 614c. The deflection wedge pushes on the locking nose 626 causing flexible bridge 625 to flex as shown in FIG. 11B until the pressure is released when the locking nose 626 enters notch 614a in the lip of the passage entry 614 and the detents on the bottom face of the abutment plate slide into matching divots in passage entry 614 with an audible click marking the final securing of the optical connection portion 620 to the main body 610 of the optical connector as shown in FIG. 11C. The internal sealing member is pushed along optical fiber cable 50 and slid until it is in contact with the second end 612 of the main body. Compression member 650 is slid forward and secured to the main body by engaging the compression member with the second end 612 of the main body 610 to yield the fully assembled optical connector 600 as shown in FIG. 9A. The tightening of the compression member 650 to the main body compresses the internal sealing member. In an alternative embodiment, the internal sealing member can be fitted over the cable just prior to securing the compression member to the main body by inserting the cable into the sealing member by through the radial slit in the internal sealing member. FIG. 12 shows another embodiment of an exemplary optical fiber connector 700 that is similar to optical fiber connector 600 described previously with the exception that the main body 710 is threadably coupled to compression member 750 rather than utilizing the bayonet connection mechanism shown in FIGS. 9A-9C. Specifically, the main body 710 has a first end 711 and a second end 712, a compression member 750 attachable to the second end of the main body and an optical connection portion 720 threadably attachable to the first end of the main body. The compression member anchors internal sealing member 740 between the compression member and the second end of the main body to provide an environmental seal between the optical fiber connector 700 and the telecommunications cable to which it is connected. Optical fiber connector 700 may be formed of plastic by conventional methods, for example by injection molding. In some applications, it can be beneficial to have a more modular connector design where the critical functions are separated into separate connector components as shown in reference to optical fiber connector 800 in FIGS. 13A-13C. FIG. 13A is an exploded view of optical fiber connector 800. FIG. 13B is a sectional view of optical fiber connector 800, and FIG. 13C is a view of a fully assembled optical fiber connector 800. Exemplary optical fiber connector 800 can be used in applications where a lower degree of environmental protection is required such as in an indoor application or a protected outdoor application (e.g. to provide an external connection to a fiber distribution box disposed in a protected breezeway or garage), or to provide an external connection to fiber links disposed within an free-breathing aerial enclosure or terminal. In this embodiment, the connector body is divided into a first body portion 810a and a second body portion 810b. The first body portion houses optical connection portion 820 (which is similar to optical connection portion 120 of the optical fiber connector 120 described previously), while the second body portion can include compressible portion 815 to grip the sheath of the telecommunication cable 50 and/or facilitate centering of the cable in optical fiber connector 800. First body portion 810a can have a first end 811a and a second end 812a. Outer housing 830 can be disposed at the first end of the first body portion, via one of the attachment mechanisms described previously (e.g. via a snap fit as described with reference to FIG. 1B, mechanical connection means as described with reference to FIG. 3A, via threaded connection as described with reference to FIGS. 5 and 9B) or can integrally molded with the first body portion (as described with reference to FIG. 4). Optical connection portion 820 can be inserted through interior passage way (not shown) of the first body portion 810a until it engages with the outer housing disposed on the first end of the first body portion to secure the optical connection portion within the first body portion. In an exemplary embodiment, the first body portion can have a gripping surface 816a on the external surface of the first body portion. The external gripping surface may have a hexagonally shaped cross-section to facilitate gripping of the cable securing device with a tool or by hand. The gripping surface may be textured (e.g. a ridged or cross-hatched texture) to further facilitate gripping of the first body portion. A groove 817a may be located between external gripping surface 816a and the first end 811a of first body portion 810a to receive an optional external sealing member 845 such as an o-ring. This optional external sealing member can provide an environmental seal between the optical fiber connector and a port of a telecommunication enclosure, if required, when the optical fiber connector is fully seated therein. The first body portion 810a can include external threads 818a adjacent to the second end 812a of the first body portion. External threads 818a cooperates with a corresponding internal threaded portion 819b disposed adjacent to the first end 811b of the second body portion 810b. Second body portion 810b can have a first end 811b and a second end 812b. The second body portion can have an internal threaded portion 819b disposed in interior passageway 813b adjacent to the first end 811b of the second body portion and a compressible portion 815 disposed adjacent to the second end 812b of the second body portion. Compressible portion 815 may be reduced in size (diameter) when an external radial force is exerted on it such as by application of compression member 850. The compressible portion 815 can have a plurality of spaced apart projections 815a extending from the second body portion 810b near the second end 812b thereof. In an exemplary aspect, each projection can have a barb (not shown) and/or a plurality of teeth (not shown) disposed near its interior end (i.e. the side of the projection that faces the interior passageway 813b of the second body portion). The barbs can penetrate the sheath of a telecommunication cable when compression member 850 is secured to the second end of the second body portion. The compression member 850 can exert a radial force on the spaced apart projections 815a pushing them inward and pushing the barbs into the sheath of the telecommunications cable 50. The second body portion 810b can include external threads 818b adjacent to the second end 812b of the second body portion. External threads 818b cooperates with a corresponding internal threaded portion 858 of compression member 850 (which is analogous to compression member 150 shown in FIG. 1A). In an exemplary embodiment, the second body portion 810b can have a gripping surface 816b on the external surface adjacent to the second body portion. The external gripping surface may have a hexagonally shaped cross-section to facilitate gripping of the cable securing device with a tool or by hand. The gripping surface may be textured (e.g. a ridged or cross-hatched texture) to further facilitate gripping of the first body portion. In an exemplary aspect, the gripping surfaces 816a, 816b, 857 of the first body portion 810a, the second body portion 810b and compression member 850, respectively, are aligned when optical fiber connector 800 is fully assembled as shown in FIG. 13C. In an alternative aspect one or more internal sealing members can be disposed in optical fiber connector 800 when a higher level of environmental protection is required. A first internal sealing member can be disposed between the first and second body portions to seal this junction point and a second internal sealing member may be inserted into the second end of the second body portion to provide an environmental seal between the cable and the optical fiber connector. While exemplary optical fiber connector 800 comprises two body portions, embodiments containing more than two body portions are contemplated and will be discussed below in additional detail with respect to FIGS. 14A-14C. In each embodiment having a plurality of body portions, the first body portion will usually house the connector portion, while any additional body portions can have a variety of functionalities such as environmental sealing, strain relief/cable clamping, spatial extension to accommodate a long connectors, etc. FIG. 14A is an exploded view of optical fiber connector 900. FIG. 13B is a view of a fully assembled optical fiber connector 900, and FIGS. 14C and 14D are sectional views of optical fiber connector 900 showing two alternative methods of securing the strength members of optical cable 60 to optical fiber connector 900. In this embodiment, the connector body is divided into a first body portion 910a, a second body portion 910b and a third or intermediate body portion 910c. The first body portion 910a houses optical connection portion 920 (which is similar to optical connection portion 120 of the optical fiber connector 100 described previously) while the second body portion can include compressible portion 915 to grip the sheath of the telecommunication cable 60 and/or facilitate centering of the cable in optical fiber connector 900. The intermediate body portion 910c provides for a special expansion of optical fiber connector 900. First body portion 910a can have a first end 911a and a second end 912a. Outer housing 930 can be disposed at the first end of the first body portion, via one of the attachment mechanisms described previously (e.g. via a snap fit as described with reference to FIG. 1B, mechanical connection means as described with reference to FIG. 3A, via threaded connection as described with reference to FIGS. 5 and 9B) or can integrally molded with the first body portion (as described with reference to FIG. 4). Optical connection portion 920 can be slipped though the compression nut 950, the intermediate and second body portions and any internal sealing members and inserted through interior passage way (not shown) of the first body portion 910a until it engages with the outer housing disposed on the first end of the first body portion to secure the optical connection portion within the first body portion. In an exemplary embodiment, first body portion 910a can have a gripping surface 916a on the external surface of the first body portion. The external gripping surface may have a hexagonally shaped cross-section to facilitate gripping of the cable securing device with a tool or by hand. The gripping surface may be textured (e.g. a ridged or cross-hatched texture) to further facilitate gripping of the first body portion. A groove 917a may be located between external gripping surface 916a and the first end 911a of first body portion 910a to receive an optional external sealing member 945 such as an o-ring. This optional external sealing member can provide an environmental seal between the optical fiber connector and a port of a telecommunication enclosure, if required, when the optical fiber connector is fully seated therein. The first body portion 910a can include external threads 918a adjacent to the second end 912a of the first body portion. External threads 918a cooperate with a corresponding internal threaded portion 919c disposed adjacent to the first end 911c of the intermediate body portion 910b. The intermediate body portion 910c can includes an extension portion 915d adjacent to the second end 912c of the intermediate body portion and a gripping surface 916a on the external surface of the first body portion 910a adjacent to its first end 911c. The gripping surface 916c of the intermediate body portion can have the same configuration as the gripping surface 916a of the first body portion or in this case gripping surface 916c can have a hexagonal cross section. The extension portion 915d can be varied in length according to the length of the optical connection portion and any open portion of cable 60 where the cable sheath has been removed. An intermediate sealing member 948 can be disposed in a stepped opening 914c at the first end of the intermediate body portion 910c (between the first end and internal threads 919c). The intermediate sealing member can be compressed between the first body portion 910a and the intermediate body portion 910c when the internal threads 919c on the intermediate body portion are tightened against the external threads 918a disposed adjacent to the second end 912a of the first body portion as shown in FIGS. 14C and 14D. The internal sealing member 948 can be an o-ring or a split grommet as described previously. In this way, intermediate sealing member 948 prevents ingress of environmental contaminants into optical fiber connector 900 though the joint between the first body portion and the intermediate body portion. Intermediate body portion 910c can also include a sealing member receiving pocket 915c at the second end 912c of the interior passage way. Receiving pocket 915c is configured to accept internal sealing member 940. The internal sealing member 940 can provide a barrier to environmental contaminants between the sheath of the cable and optical fiber connector 900 when the internal sealing member is compressed between the intermediate body portion 910c and the second body portion 910b when the internal threads 919b of the second body portion are tightened against the external threads 918c disposed adjacent to the second end 912c of the intermediate body portion 910c. The intermediate body portion 910c includes external threads 918c adjacent to the second end 912c of the intermediate body portion. External threads 918c cooperate with a corresponding internal threaded portion 919b disposed adjacent to the first end 911b of the second body portion 910b. Second body portion 910b can have a first end 911b and a second end 912b. The second body portion can have an internal threaded portion 919b disposed in interior passageway 913b adjacent to the first end 911b of the second body portion and a compressible portion 915 disposed adjacent to the second end 912b of the second body portion. Compressible portion 915 is similar to compressible portion 815 of optical fiber connector 800 as described previously and can be reduced in size (diameter) when an external radial force is exerted on it such as by application of compression member 950. The compressible portion 915 can have a plurality of spaced apart projections extending from the second body portion 910b near the second end 912b thereof. In an exemplary aspect, each projection can have a barb and/or a plurality of teeth disposed near its interior end (i.e. the side of the projection that faces the interior passageway 913b of the second body portion). The barbs can penetrate the sheath of a telecommunication cable when compression member 950 is secured to the second end of the second body portion. The compression member 950 can exert a radial force on the spaced apart projections, pushing them inward and pushing the barbs into sheath 62 of the telecommunications cable 60. The second body portion 910b can include external threads 918b adjacent to the second end 912b of the second body portion. External threads 918b cooperates with a corresponding internal threaded portion 958 of compression member 950 (which is analogous to compression member 150 shown in FIG. 1A). The compression member 950 can exert a radial force on the spaced apart projections pushing them inward and pushing the barbs into sheath 62 of the telecommunications cable 60. In an exemplary embodiment, the second body portion 910b can have a gripping surface 916b on the external surface adjacent to the second body portion. The gripping surface 916b of the second body portion can have the same configuration as the gripping surfaces 916a, 916c of the first body portion and the intermediate body portion or in this case gripping surface 916b can have a hexagonal cross section. In an exemplary aspect, the gripping surfaces 916a, 916b, 916c, 957 of the first body portion 910a, the second body portion 910b, the intermediate body portion 910c, and compression member 950, respectively, can be aligned when optical fiber connector 900 is fully assembled as shown in FIG. 14B to yield a small ruggedized, low profile optical fiber connector. In an exemplary aspect, the strength members of optical fiber cable 60 can be anchored to optical fiber connector 900. Optical fiber cable 60 can include one or more buffer coated optical fibers 64 surrounded by a first layer of glass or aramid fiber strength members 68 surrounded by a tube 63 or jacket layer. A second layer of glass or aramid fiber strength members 67 surrounds tube and is enclosed by a semi-rigid outer sheath 62 and can include one or more additional more rigid strength members (not shown). In an exemplary aspect cable 60 can be a Series 1129 Acoptic.RTM. FTTH Outdoor Cable, available from Acome (Paris, France). In a first exemplary embodiment, the first layer of strength members 68 is captured in the threaded connect region between the backbone 921 and boot 929 of optical connection portion 920 and the second layer of strength members 67 is captured in the threaded connect region between the first body portion 910a and the intermediate body portion 910 of optical fiber connector 900 as illustrated in FIG. 14C. In a second exemplary embodiment, the first layer of strength members 68 and the second layer of strength members 67 are captured in the threaded connect region between the backbone 921 and boot 929 of optical connection portion 920 of optical fiber connector 900 as illustrated in FIG. 14C. The exemplary fiber optic connectors, described herein, illustrate several advantages over conventional hardened connectors. In one aspect the exemplary optical fiber connector can be field terminated by utilizing a suitable field mountable optical connection portion. In another aspect, the exemplary optical fiber connector can be factory mounted utilizing a factory mounted connection portion. In addition, the exemplary optical fiber connector can be assembled on the end of a pre-terminated cable by incorporating the pre-terminated optical connection structure into the exemplary optical fiber connector disclosed herein. Although specific embodiments have been illustrated and described herein for purposes of description of the preferred embodiment, it will be appreciated by those of ordinary skill in the art that a wide variety of alternate or equivalent implementations may be substituted for the specific embodiments shown and described without departing from the scope of the present invention. Those with skill in the art will readily appreciate that the present invention may be implemented in a very wide variety of embodiments. This application is intended to cover any adaptations or variations of the embodiments discussed herein.
To prove scale, design and measurements, the Lightning was fabricated. All the scale details were worked out and it was a beautiful, good running engine. Because of the complexity of the fabricated parts, we decided to make castings which will capture all the fine detail of this engine.
Work structuring means developing a project’s process design while trying to align engineering design, supply chain, resource allocation, and assembly efforts. The goal of work structuring is to make work flow more reliable and quick while delivering value to the customer. Current work structuring practices are driven by contracts, the history of trades, and the traditions of craft. As a result, they rarely consider alternatives for making the construction process more efficient. To illustrate current practice and the opportunities provided by work structuring, this case study discusses the installation of metal door frames at a prison project. Because the project is a correctional facility, the door frame installation process involves a special grouting procedure which makes the installation process less routine. Those involved recognized the difficulty of the situation but better solutions were impeded by normal practice. This case study thus provided the opportunity to illustrate how one may come up with alternative ways to perform the work without being constrained by contractual agreements and trade boundaries. By doing so, we illustrate what work structuring means. Local and global fixes for the system comprising walls and doors are explored. In addition, we discuss the importance of dimensional tolerances in construction and how these affect the handoff of work chunks from one production unit to the next. Tsao, C.C. , Tommelein, I.D. , Swanlund, E. & Howell, G.A. 2000, 'Case Study for Work Structuring: Installation of Metal Door Frames' In:, 8th Annual Conference of the International Group for Lean Construction. Brigthon, UK, 17-19 Jul 2000.
This video shows the Finite Time Lyapunov Exponent (FTLE) extracted from grouped fluid particle tracers in backward time over a NACA 65(1)-412 airfoil in 3D. Ridges in the backward FTLE field identify attractors in the flow and are candidates for Lagrangian Coherent Structures. Three cases are shown: the flow at a chord-based Reynolds number of 20,000 and angles of attack of four and ten degrees and the flow at a Reynolds number of 50,000 at four degrees.
Mask Tie Tape Welding Machine(SM-22) - SuperUltrasonic Co., Ltd. Mask tie tape welding machine. SM-22 machine are used to continue to weld non-woven tie at the end sides of the mask blank body to become a complete mask. 1 - Compact siz and reliable performance. 2 - All aluminum alloy made construction. 3 - Photoelectric sensors for detection.
High deposition rates utilizing a 20mm-40mm-60mm strip. Low dilution due to arc established in special compensated fluxes. Chemical analysis made in one layer. Most geometry can be overlaid allowing tube sheets, nozzles and shells. Ohmstede maintains a large diverse inventory of electroslag strip and compensated fluxes.
Fiber (tracheid) length is an important trait targeted for genetic and silvicultural improvement. Such studies require large-scale non-destructive sampling, and accurate length determination. The standard procedure for non-destructive sampling is to collect increment cores, singularize their cells by maceration, measure them with optical analyzer and apply various corrections to suppress influence of non-fiber particles and cut fibers, as fibers are cut by the corer. The recently developed expectation-maximization method (EM) not only addresses the problem of non-fibers and cut fibers, but also corrects for the sampling bias. Here, the performance of the EM method has been evaluated by comparing it with length-weighing and squared length-weighing, both implemented in fiber analyzers, and with microscopy data for intact fibers, corrected for sampling bias, as the reference. This was done for 12-mm increment cores from 16 Norway spruce (Picea abies (L.) Karst) trees on fibers from rings 8–11 (counted from pith), representing juvenile wood of interest in breeding programs. The EM-estimates provided mean-fiber-lengths with bias of only +2.7% and low scatter. Length-weighing and length2-weighing gave biases of -7.3% and +9.3%, respectively, and larger scatter. The suggested EM approach constitutes a more accurate non-destructive method for fiber length (FL) determination, expected to be applicable also to other conifers.
Master bond’s EP21ND-LP Epoxy Adhesive is formulated for structural bonding applications and features working life of 2-4 hrs at 75°F for a 100 gram mass. Capable to withstand thermal cycling, product exhibits a coefficient of thermal expansion of 50-55 x 10^-6/in/in/°C and electrical insulation with volume resistivity of greater than 10^14 ohm-cm. The adhesive is suitable for use in electronic, electrical, computer, chemical, aerospace and OEM industries and is available in ½ pint, pint, quart and gallon kits. Master Bond EP21ND-LP was created for structural bonding applications involving large surface areas. It has an advantageously long working life of 2-4 hours at 75°F for a 100 gram mass. Its smooth paste consistency makes it convenient to apply and use. Shore D hardness is 70-80 when mixed in a one to one mix ratio by weight or volume. Moreover, certain properties of the epoxy can be altered by adjusting the mix ratio. For example, adding more of Part A to obtain a 2:1 mix ratio will produce a formulation with a more rigid cure. Conversely, adding more of Part B in a 1:2 mix ratio will provide the epoxy with a more forgiving cure. EP21ND-LP cures at room temperature or more rapidly at elevated temperatures. EP21ND-LP achieves high strength, durable bonds and has excellent gap filling properties. Its tensile strength ranges between 6,000 to 7,000 psi. It withstands thermal cycling and has a coefficient of thermal expansion of 50-55 x 10^-6/in/in/°C. This dimensionally stable epoxy also offers reliable electrical insulation with a volume resistivity greater than 10^14 ohm-cm. The standard color of Part A is gray and Part B amber, although the epoxy can be formulated in a wide array of colors. It can be used in the electronic, electrical, computer, appliance, chemical, aerospace and specialty OEM industries. It is available in ½ pint, pint, quart and gallon kits. Master Bond EP21ND-LP adheres well to numerous substrates such as metals, composites, glass, ceramics and many types of rubbers and plastics, forming high physical strength bonds. Read more about Master Bond’s two component epoxy systems and their versatile properties at https://www.masterbond.com/products/two-component-epoxy-adhesives or contact Tech Support. Phone: +1-201-343-8983 Fax: +1-201-343-2132 Email: technical@masterbond.com. What Are Hot Glue Guns?
In terms of demand and rough-cut planning, ORSOFT follows an integrative approach by linking processes of detailed scheduling, rough-cut and sales planning. Information is gathered over all planning levels and clearly displayed via cockpits and views. Thus, the solution provides a wider scale of function than the classical approach of sales planning that mainly concentrates on the acquisition of demand data. ORSOFT Manufacturing Workbench provides the Demand & Capacity Cockpit for such an integrative planning process. It allows an early valuation of the sales forecast in terms of capacitive feasibility, even in cases of complex multi-step production and supply networks. Based on the logistical planning model, material and planning data is displayed over a selectable period within especially customized views, cockpits and planning books. Thus, planning personnel gains a vast overview of the entire planning situation. These interface elements allow users to directly modify requirement figures. Data can be added, altered or deleted; production orders, which are the basis of intermediate planning, can be verified online regarding their feasibility. Every aggregated information (e.g. summarized monthly demand) is based on the accessible list of the detailed data objects in SAP ERP and SAP S/4HANA (rolling forecast, customer order etc.). When planning a promotional or tender business, simulated process orders help to check for feasibility and impact on already scheduled customer orders.
We punch holes and slots in Stainless Steel and Mild Steel plates. The punched hole diameter must be greater than the plate thickness. Hole diameters less than the plate thickness must be drilled - please contact the Sales Desk for a price.
In this work, we describe a very simple electroless deposition method to prepare moderate-SERS-active nanostructured Pd films deposited on the glass substrates. To the best of our knowledge, this is the first report on the one-pot electroless method to deposit Pd nanostructures on the glass substrates. This method only requires the incubation of negatively charged glass substrates in ethanol-water mixture solutions of Pd(NO 3 ) 2 and butylamine at elevated temperatures. Pd films are then formed exclusively and evenly on glass substrates. Due to the aggregated structures of Pd, the SERS spectra of benzenethiol and organic isonitrile could be clearly identified using the Pd-coated glass as a SERS substrate. This one-step fabrication method of Pd thin film on glass is cost-effective and suitable for the mass production. Surface-enhanced Raman scattering (SERS) is a phenomenon in which the scattering cross sections of molecules adsorbed on certain metal surfaces are dramatically enhanced. 1 2 In recent years, it has been reported that even single-molecule detection is possible by SERS. 3 4 SERS has thus been used in many areas of science and technology, including chemical analysis, corrosion, lubrication, catalysis, sensor, and molecular electronics, etc . 5 6 One of the weak points of SERS is that only noble metals such as Au, Ag, and Cu can usually provide large enhancement effects, 7 - 9 which severely limits wider applications involving other metallic materials of both fundamental and practical importance. In recent years, even transition metals have been proven to be SERS active when they are subjected to a proper roughening process. 10 - 12 It is still difficult, however, to obtain Raman spectra of molecules adsorbed on transition metals like Pt and Pd, especially in nonelectrochemical environments. Palladium(II) nitrate dihydrate (Pd(NO 3 ) 2 ·2H 2 O, 99%), butylamine (C 4 H 9 NH 2 , 99.5%), benzenethiol (BT, 99%), and 2,6-dimethylphenylisocyanide (2,6-DMPI, 96%) were pur- chased from Aldrich and used as received. Absolute ethanol (99.9%) was purchased from J. T. Baker. Other chemicals, unless specified, were of reagent grade. Highly pure water (Millipore), of resistivity greater than 18.0 MΩ·cm, was used throughout. Initially, slide glasses (50 mm × 10 mm × 1 mm, Marienfeld) were soaked in a piranha solution for 30 min and sonicated in distilled water for 10 min, followed by rinsing with ethanol, and finally dried in an oven at 60 ℃ for 1 h. The cleaned slide glasses were dipped in the reaction mixtures and incubated for 12 h at 70 ± 1 ℃ with vigorous shaking. A polypropylene container was used as the reaction vessel. The reaction mixture consisted of 10 mL of 10 mM Pd(NO 3 ) 2 in ethanol-water (8:2 v/v) and 40 to 400 μL of butylamine. The Pd-coated glass was finally rinsed with ethanol and air-dried. To record the SERS spectra of BT and 2,6-DMPI, the Pd-coated glasses were soaked in ethanolic solutions of 10 mM BT and 2,6-DMPI, respectively, for 3 h followed by thorough washing with ethanol after evaporation of the solvent. Ultraviolet-visible (UV-vis) spectra were obtained with an Avantes 3648 spectrometer. Field-emission scanning electron microscopy (FE-SEM) images were obtained using a JSM-6700F field-emission scanning electron microscope operated at 2.0 kV. Energy dispersive X-ray (EDX) characterization was performed with a SUPRA 55VP field-emission scanning electron microscope operating at 15 kV. X-ray diffraction (XRD) was conducted on a Rigaku Model MiniFlex powder diffractometer using Cu K α radiation. X-ray photoelectron spectroscopy (XPS) measurements were carried out with an AXISH model using Mg K α X-ray as the light source. Raman spectra were obtained using a Renishaw Raman system Model 2000 spectrometer equipped with an integral microscope (Olympus BH2-UMA). The 514.5 nm line from a 20 mW Ar + laser (Melles-Griot Model 351MA520) was used as the excitation source. The Raman band of a silicon wafer at 520 cm ‒1 was used to calibrate the spectrometer, and the accuracy of the spectral measurement was estimated to be better than 1 cm ‒1 . Atomic force microscopy (AFM) images were obtained on a Digital Instruments Nanoscope Ⅲa system. Using an 125 μm long etched silicon cantilever with a nominal spring constant of 20-100 N/m (Nanoprobe, Digital Instruments), topographic images were recorded in a tapping mode with a driving frequency of ~300 kHz at a scan rate of 2 Hz. FE-SEM images of Pd films prepared by electroless deposition at different molar ratios of Pd(NO3)2 and butylamine: (a) Pd(1:4), (b) Pd(1:8), (c) Pd(1:10), and (d) Pd(1:40); the scale bar = 1 μm. (a) XRD and (b) XPS analyses of Pd(1:10) film. The protocol of electroless deposition of Pd onto the surface of a slide glass and its usage to detect analytes by SERS are schematically drawn in Figure 3 . A negatively charged glass substrate, qualitatively sketched in (a), is very effective in the deposition of Pd 2+ ions particularly because the hydroxyl groups of a glass surface are partially deprotonated in ethanol-water mixture solution. 29 Upon adding Pd 2+ ions, the oxygen sites are bound by Pd 2+ ions such that the surface-bound Pd 2+ ions can subsequently function as seeds for the growth of Pd nanostructures on a glass substrate. As reported in our previous work, very stable and optically tunable Ag films could be reproducibly fabricated simply by soaking glass substrates into ethanolic solutions of AgNO 3 and butylamine. 24 In the preparation of Pd films on glass substrates, however, pure ethanolic solution of Pd(NO 3 ) 2 and butylamine led to the formation of colloidal Pd nanoparticles. 30 In order to deposit Pd nanostructures on a glass substrate, a controlled amount of water should be added in the ethanol solution. Without proper amount of water, Pd nanostructures did not form on the glass substrates. The reducing power of pure ethanolic solution with butylamine is strong enough to produce Pd nanoparticles in the solution state. By adding some amount of water to the solution, bulk reaction does not take place and Pd nanostructures start to form on the surface of a slide glass. On the other hand, high concentration of water hampers not only the formation of Pd nanoparticles in the solution but also the development of Pd nanostructures on a glass substrate. Thus, to balance the reducing power of the solution, ethanol-water (8:2 v/v) mixture was used throughout this work. Once Pd nanostructures are formed exclusively on the surface of a slide glass, an analyte solution can be adsorbed on the surface of Pd-coated glass substrate, as sketched in (c) of Figure 3 , for chemisorption or physisorption of the analyte molecules that can subsequently be detected by SERS, as sketched in (d). Electroless deposition of palladium onto the surfaces of a slide glass and its usage to detect chemicals by SERS; (a) formation of surface bound Pd2+ ions to function as seeds for growth of Pd nanostructure, (b) actual formation of Pd nanostructures, (c) chemisorption and/or physisorption of analyte molecules onto Pd nanostructures for SERS analysis, and (d) SERS measurement taken by focusing laser light onto Pd nanostructures formed on the surface of a glass substrate. Considering the fact that SERS usually occurs with aggregated structures of metal particles in the range of 20-200 nm, the as-prepared Pd-coated glass substrates would be expected to show SERS activity. Prior to evaluating the SERS activity, the optical properties of the prepared Pd films were examined. The UV-vis absorption spectra of the four Pd films are shown in Figure 4 . There is no characteristic peak in the region of 300-1000 nm and only a gradual increase in absorption can be identified. We evaluated the performance of our Pd films deposited on glasses as SERS substrates using BT as a model compound. Figures 5(a) - 5(d) show four typical SERS spectra of BT adsorbed on Pd(1:4), Pd(1:8), Pd(1:10), and Pd(1:40) films, respectively. The SERS peaks from the Pd(1:10) film are very intense but the peaks from other films are weak (see Figure 5(e) ). It is notable that the Pd(1:40) film exhibits the least enhancement, probably associated with its relatively flat surface morphology; this result might highlight the importance of the gap or crevices among the metal nanostructures in SERS measurements. UV-vis spectra and photographs (insets) of four different Pd films: (a) Pd(1:4), (b) Pd(1:8), (c) Pd(1:10), and (d) Pd(1:40). where I SERS and I NR are the SERS intensity of BT on Pd(1:10) film ( Figure 5(c) ) and the normal Raman (NR) scattering intensity of BT in bulk, respectively, and N SERS and N NR are the number of BT molecules illuminated by the laser light to obtain the corresponding SERS and NR spectra, respectively. 24 I SERS and I NR were measured at 1574 ㎝ ‒1 , and N SERS and N NR were calculated on the basis of the estimated concentration of surface BT species, density of bulk BT, and the sampling areas. The equilibrated surface concentration of BT is assumed to be the same as that on Au and Ag, i . e . ~7.1 × 10 ‒10 ㏖/㎝ 2 . 31 Taking the sampling area ( ca . 1 μm in diameter) as well as the surface roughness factor (~2.15) obtained from the AFM measurement of Pd(1:10) film into account, NSERS is calculated to be 1.2 × 10 ‒17 ㏖. When taking the NR spectrum of pure BT, the sampling volume will be the product of the laser spot and the penetration depth (~15 μm) of the focused beam. 32 As the density of BT is 1.07 g/㎝ 3 , N NR is calculated to be 1.1 × 10 ‒13 ㏖. Since the intensity ratio, I SERS / I NR , is measured to be ~0.2 for Pd(1:10) film at 514.5 nm excitation, EF can then be as large as 1.8 × 10 3 , which is comparable to previously reported values. Xia and coworkers reported an EF value of 1.3 × 10 3 for 4-mercaptopyridine adsorbed on Pd nanoboxes. 33 For pyridine adsorbed on the electrochemically roughened Pd, Tian and coworkers reported an EF factor of 1.8 × 10 3 . 34 It should also be mentioned that as quoted in Figure 5(e) , five different spots were randomly selected to take the SERS spectra; the peak intensities at 1574 ㎝ ‒1 were also normalized with respect to that of a silicon wafer used in the instrument calibration. The fact that the relative standard deviation was less than 10% for all Pf films clearly illustrates the homogenous characteristics of our Pd films. SERS spectra of benzenethiol adsorbed on four different Pd films: (a) Pd(1:4), (b) Pd(1:8), (c) Pd(1:10), and (d) Pd(1:40). (e) Relative Raman peak intensities of benzenethiol at 1574 ㎝‒1 (ν8a) measured using (a) Pd(1:4), (b) Pd(1:8), (c) Pd(1:10), and (d) Pd(1:40); for each substrate, spectra were measured at five different spots. (a) NR spectrum of 2,6-DMPI in neat solid state; the inset shows the molecular structure of 2,6-DMPI. (b) SERS spectrum of 2,6-DMPI adsorbed on a Pd(1:10) film. In this investigation, we found that very stable, evenly deposited, and moderately SERS-active Pd films can be reproducibly fabricated simply by soaking glass substrates in ethanol-water (8:2 v/v) mixture solutions of Pd(NO 3 ) 2 and butylamine. It was revealed that a controlled amount (~20%) of water should be added in the ethanol solution to successfully deposit Pd nanostructures on a glass substrate. The formation and characteristics of Pd thin films were confirmed by FE-SEM, UV-vis, XRD, and XPS analyses. The Pd films deposited onto glass substrates consisted of aggregated granular particles whose mean grain sizes increased as the relative molar ratio of butylamine and Pd(NO 3 ) 2 increased. The as-prepared Pd films exhibited very even SERS activity and the enhancement factor estimated using BT as a prototype adsorbate reached 1.8 × 10 3 using a 514.5 nm excitation source. The close investigation of SERS spectrum 2,6-DMPI on Pd revealed that the 2,6-DMPI molecules may adsorb on the on-top and the 3-fold hollow sites of Pd nanostructures via the isocyanide group. Our method is cost-effective and is suitable for the mass production of homogeneous Pd films on glass substrates. Hence, this method will be useful in the development of Pd-based nanostructures, retaining simultaneously the advantages of high SERS as well as catalytic activities. This work was supported by National Research Foundation of Korea (NRF) grants funded by the Korea government (MSIP) (No. 2007-0056095, 2011-0006737, and 2012R1A2A2A01008004). Schatz G. C. , Van Duyne R. P. , Chalmers J. M. , Griffiths P. R. 2002 In Handbook of Vibrational Spectroscopy John Wiley & Sons Chichester, U.K. KS Shin , YK Cho , KL Kim , and K Kim , “Electroless Deposition and Surface-Enhanced Raman Scattering Application of Palladium Thin Films on Glass Substrates”, Bulletin of the Korean Chemical Society, vol. 3, no. 3, Mar 2014.
Geometrical parameters, harmonic frequencies and molecular properties of FCN, ClCN, their cations and the isomers of FCN and ClCN are studied in detail using ab initio MP2, CCSD and CCSD(T) methods. The dissociation energy of FCN and ClCN in various dissociation channels has been investigated. Both ground and metastable state of the fragmented atoms are considered in their dissociation pathways. The isomerization energy of FCN and ClCN and the NBO charges of FCN, ClCN, their cations and isomers are analyzed.
Brand new 364121 Xray Alu 3-Pad Slipper Clutch Plate With Adapter - 7075 T6 Hard Coated.Slipper clutch plates machined from premium Swiss 7075 T6 and additionally hardened and with a black final surface treatment. This lightweight slipper clutch plate has machined relief areas which decrease the friction surface to assist with clutch slip adjustment. With the new plate, the pressure of the plate is on the circumference of the clutch pads, which increases efficiency.. Taken from an unbuilt XB4 kit.
Chemtools Etch Primer is a one pass acid hardening metal etch primer formulated for workshop application use on structural steel work, sheets and plates, cranes and storage tanks. This premium primer has excellent adhesion on iron and steel when exposed to mild chemicals and water. Chemtools etch primer is a high build, easy-to-use self-etch primer that provides excellent adhesion for additional top coats, primers, and sealers to metal. It is compatible with all primer surfaces for spot repair & refinishing. It can be applied to steel, aluminium & most metals. This quick drying primer is designed to provide a tough and durable anti-corrosive base coat.
Recognizing that polyolefins such as high density polyethylene (HDPE), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), and polypropylene (PP) account for a large share of the total production and consumption of plastics and are used in diverse application areas (including automotive, aerospace, transport, building products, medical, and other sectors), Polnox products are especially geared toward meeting the performance requirements of finished products made from these resins. The comparative performance of a Polnox Antioxidant and commercial AO-1 (CAS RN 6683-19-8) in polypropylene (PP) homopolymer is presented here using the ASTM D 5885 method (Oxidative Induction Time) under an oxygen pressure of 500 psi under isothermal conditions at 170°C. Evaluated at equal concentrations, the performance of the Polnox antioxidant far surpasses that of the commercial product (improvement factor of almost ~4-5x). Please contact us for your plastics application needs.
Harcryl 1228 is a unique, functional, acrylic monomer consisting of mono and di-phosphate esters of 2-Hydroxyethylmethacrylate. The ratio of monoalkyl to di-alkyl phosphate allows it to be easily incorporated into a variety of polymer systems. The polarity of Harcryl 1228 provides for application in hydrophilic formulations as well. Harcryl 1228 is inhibited with 400ppm of added hydroquinone. The phosphate functional group promotes adhesion to a variety of surfaces, reducing the need for pretreatments. Improving adhesion saves time and reduces layers from the coating process. Increased corrosion resistance due to the phosphate functional group reduces the need for additional inhibitors. The acrylic backbone allows Harcryl 1228 to easily incorporate into many coating systems.
Polystyrene packaging peanuts cushion contents on all sides. - Interlocking shape prevents contents from settling. - Economical, fast and easy to use void fill.
High quality adhesive based on MS polymers, highly suitable for bonding almost all materials on almost all surfaces (porous and non-porous). Very powerful and high initial adhesion (high tack), without the need for clamping. Parasilico Premium is a 1-component, ready-to-use silicone sealant (RTV-1), based on a neutral oxime curing system. The product cures under the influence of atmospheric moisture. Parasilico Premium is extremely easy to apply and finish. No cob-webbing and extremely abrasion-resistant. Parasilico Premium is mould-resistant and extremely appropriate for tile joints, also for use in sanitary applications, moist areas, sealing applications in bathrooms, kitchens, etc.
Hot Rolled Stainless Steel Coil. Our products is widely use in medical equipment, food industry, construction material, kitchen utensils etc.We wrap the stainless steel coil/strip with anti-rust paper and steel rings to prevent damage. The hot rolled stainless steel coil and the cold rolled stainless steel coil are excellent materials for cutting edge applications in the industry, including medical equipment, construction materials, and kitchen utensils. With a wide variety of choices, buyers may choose the coils with different thickness, width, and stainless steel grades. Hot Rolled Stainless Steel Coil. All Products. Cold Rolled Stainless Steel Coils (36) Hot Rolled Stainless Steel Coil (24) 304 Stainless Steel Coil (16) Stainless Steel Sheets (24) ... 410S 409L 430 No.1 Surface Hot Rolled Steel Coil , 1500mm 1800mm 2000mm Width stainless steel strip coil. Haozeshun Steel Trade Co. is a supplier and exporter of Cold Rolled Stainless Steel Coils, Hot Rolled Stainless Steel Coil and 304 Stainless Steel Coil - a company has good quality products & service from China. Hot rolled coils, strips and plates are available in a wide range of heat- and corrosion-resistant grades in all stainless steel types austenitic, ferritic, duplex and martensitic. The resulting material is highly workable and 100% recyclable. Stainless Steel Coil, Stainless Steel Tube, Stainless Steel Strip manufacturer / supplier in China, offering High Quality Colored Stainless Steel Decorative Sheets for Project Matt Anti-Fingerprint, Copper Claded Stainless Steel Decorative Plate Bronze Hairline Vibration Finished, Prime Stainless Steel Coils and Strips Hot Rolled Cold Rolled Cheap Price and so on. Cold rolled stainless steel coil, strip and sheet . FOR A WORLD OF POSSIBILITIES. Products Forms Cold rolled coil, strip and sheet. Benefits. Cold rolled coil, strip and sheet ... Case wine tanks Grape source of pride Forta Spain Hot rolled coil, strip and plate Cold rolled coil, strip and sheet. wholesale 304 stainless steel coil Cold Rolled Hot Rolled low price for sale . US $1500-2500 / Ton . 1 Ton (Min. Order) ... posco sus 304 stainless steel coil decorative stainless steel 6k finish cold rolled steel coil 201 . US $1000-2800 / Metric Ton . 1 Metric Ton (Min. Order) 12 YRS . Hot Rolled Steel; Luminous Signs Cold Rolled Stainless Steel Coil , Cold Rolled Steel Strips. 310S Hot Rolled Stainless Steel Sheet In Coil , Hot Rolled Steel Strips. Professional Stainless Steel Rolls With BA Both Side / 8K Mirror Finish. Kitchen Utensil / Cookers 201 Grade Stainless Steel Coils Sheets Environment Protection.
Restringido a Repository staff only hasta 27 February 2020. With the aim of achieving stable, substantial remanences adequate for exploitation in stray field-based applications, we report on the hysteresis behavior occurring in arrays of single-crystal Fe motifs, a-beam lithographed into prisms with triangular bases and different orientations of their magnetocrystalline axes with respect to the morphological symmetry axes. From both experimental and simulational analyses we recognize the fact that the magnetization reversal processes of our samples were mediated by motif-sized vortices. Their nucleation and annihilation fields and sites within the motifs, and their field-induced displacements, are discussed in terms of the magnetocrystalline and configurational anisotropies and inter-motif dipolar interactions. From our data, we conclude that reduced remanences as large as 0.85 (sufficient for the application requirements), protected by nucleation fields of several tens of Oe, can be produced in arrays where magnetocrystalline easy axes reinforce and partly compensate the easiest and hardest configurational ones, respectively. The angular dependence of the reduced remanence associated with interplay of these anisotropies corresponds to a symmetry reduction from the triaxial one linked to the triangular morphology down to an effective uniaxial one. We also identify, for the particular case of inter-nanoprism distances that are short in comparison with the dimensions of the motif base, a contribution to the remanence enhancement originating from the dipolar interactions. F C, F J P, M S A, U U and J M G would like to acknowledge the Spanish Ministry of Economy and Competitiveness Grant Nos. MAT2013-47878-C2-1-R, MAT2013-47878-C2-2-R and MAT2016-80394-R. A G, E M G and J L V are grateful for support from Spanish Ministry of Economy and Competitiveness Grant No. FIS2016-76058-C4-1-R (AEI/FEDER, EU) and Comunidad de Madrid Grant No. P2013/MIT-2850. IMDEA Nanociencia acknowledges support from the 'Severo Ochoa' Program for Centers of Excellence in R&D (MINECO, Grant SEV-2016-0686).
What should I be aware of for exterior applications? The panels must always be fastened to a suitable sub-structure that provides rear ventilation. A joint no less than 5mm is required between the individual panels. It is beneficial to place joint tape behind the joint. A coating is not required Sanded panels are not suitable for exterior applications. To which sub-structures can I fasten the AMROC panel? It is recommended to fasten the panels to a lumber sub-structure. However, the AMROC Panel can be fastened to any other sub-structure. When using various materials, their coefficients of thermal expansion and expansion characteristics under varying environmental conditions need to be observed. Under what circumstances do I need to coat the cement-bonded particle panel, and with what materials? In principle, the panels do not need to be coated, since they are weather and icing resistant. In most cases, coatings of any type and manner are selected for decorative purposes. The panel must always be coated on both sides, to ensure a vapor diffusion equilibrium. This is not always possible for structural engineering reasons, for instance with tiles, wood flooring, laminates or similar materials. For these applications, AMROC offers the product AMROC Color-Primed. This product version has primer applied to the front facing side and the edges, and the rear facing side has a finish coat. After the decorative surface treatment has been applied to the front facing side, the vapor diffusion equilibrium for this product is nearly intact. What tools can I use to machine the AMROC panel? The AMROC Panel can be easily machined with carbide tipped tools (cutting, drilling, milling). The panels can be fastened with screws, nails, staples or adhesives. Is the cement-bonded particle panel environmentally friendly? Our AMROC PANEL was tested for environmentally and health hazardous substances, and was classified as environmentally friendly. These tests were performed at the Institut für Baubiologie, Rosenheim (construction biological expert opinion), and also by the test lab Eurofin in Denmark (emission test AgBB), and are documented in test reports. We will provide these reports upon your request. How can I dispose of the cement-bonded particle panel remnants. Processing waste can be disposed of in above ground construction waste landfills. What do I need to be aware of for when storing cement-bonded particle panels? What differences exist between an AMROC panel and other construction panels (for instance cement fiber panels, gypsum fiber board, sheet-rock, particle board, or OSB)? The differences between the cement-bonded particle panel and other construction panels are the result of its composition, the mixture ratios of wood and cement and the manufacturing process. Wood is a natural material (for instance cement fiber panels, gypsum fiber board, sheet-rock, particle board, or OSB)? Due to the wood content, the cement-bonded particle panel is lighter and more easily machined and installed, as compared to a purely mineral based construction panel, such as the cement fiber panel. The single layer distribution process (of a so-called monolithic panel) prevents delamination of the panel. This permits the use of the AMROC PANEL for applications where glue bonded construction panels can only be used with restrictions. This is the case for exterior applications, or in high humidity or wet spaces. The vapor diffusion permeability is another feature of the AMROC PANEL. This enables the panel to absorb moisture, and in contrast to gypsum bonded construction panels, is able to disperse the moisture back to the ambient air. This feature prevents moisture damage. What fire retardant classes does the AMROC panel comply with? The fire retardant class of construction component is designated by F30, F60, F90, etc. and depends on a variety of factors. These include the construction materials used. The construction materials are classified into various classifications and/or construction materials classes in accordance with DIN 4102, part 1, as a function of their combustion characteristics. This classification is also found in the product designation. AMROC PANEL B1 (fire retardant). However, the fire retardant classes do not provide information about the construction material characteristics in the structure. These are only influenced by the fire retardant duration (fire retardant class). DIN 4102 can be used as a reference to determine which construction materials can be used, for instance for an F90-structure (without having to conduct an elaborate and therefore expensive fire test). A simple and prompt determination can be made using table 2 from DIN 4102, part 2. DIN 4102, part 4 provides several design examples, which provide information about the layout of a structure, and also the strength and type of the construction materials that can be used for one's own design. What fastening options exist, and what guidelines do I need to follow? Can the AMROC panel be used as a plaster substrate? The AMROC panel has only limited applicability as a plaster substrate since cracks can form at the seams. As a rule, we can only recommend dispersion plaster. What is the difference between a floating installation and an installation on wooden beams? Can I use ceramic materials (tiles) as a surface treatment for the AMROC panel? Ceramic materials are a suitable surface treatment for the AMROC panel. If this surface treatment is used on a floor board, it is imperative that the panel seams are glued. The floor board must then be sealed with a primer on all sides to prevent a cupping effect. Permanently elastic tile adhesives and grout must be used for these applications.
Products and Service Company-ram TR 1270-75 baler is used for nonferrous baling applications. It features an innovative shear design, hydraulic system design and use of automation. The smaller profile maximizes processing space while the 72" by 80" opening allows efficient material infeed, and is computer-controlled.
An optical scanning device for scanning an optical record carrier. A high numerical aperture objective lens system includes at least a first lens element (12) arranged to converge the beam to a certain extent and a second lens element (13) arranged to converge the beam to a greater extent. The device comprises a spherical aberration compensation optical subsystem including an electro-optical element for altering an optical path length in a spherical aberration generating region, which region is located in the optical path between the first lens element and the location of the record carrier in the device. ES2180597T4 (en) 2003-07-01 Surgical apparatus aided optical coherence tomography.
Thermoplastic nanocomposites allow processing fused silica glass like polymers. From subtractive machining like carving to high-throughput roll-to-roll replication. See our new paper in Advanced Materials.
In the optimization of real-world activities the effects of solutions on related activities need to be considered. The use of isolated problem models that do not adequately consider related processes does not allow addressing system-wide consequences. However, sometimes the complexity of the real-world model and its interplay with related activities can be described by a combination of simple, existing, problems. In this work we aim to discuss strategies to combine existing algorithms for simple problems in order to solve a more complex master problem. New challenges arise in such an integrated optimization approach.
GE Aviation is expanding two of its ceramic matrix composite manufacturing plants in North Carolina, one in Asheville and one in West Jefferson. The company will invest an additional $105 million in the plants, which manufacture jet engine components. Micron3DP, a 3-D printing company that develops and builds all-metal extruders, has now successfully experimented with advanced 3-D printing methods for what may be the final frontier in 3-D printed materials: glass.
A highly chemically stable porous covalent framework (PCF-1) based on ether linkages has been synthesized, which exhibits no loss up to ∼500 °C along with retention of integrity under acidic, basic and oxidative reagent conditions. Owing to its thermal and chemical stability, post-synthetic covalent modification was executed for the introduction of pendant sulphonic acid (–SO3H) groups. The covalently modified compound (PCF-1-SO3H) presents a remarkably high conductivity (ca. 0.026 S cm−1), with an ∼130 fold enhancement in proton conductivity over the parent compound. This value is comparable with those of commercially used Nafion-based proton conducting materials and stands as the highest known value in the regime of post-synthetically modified porous organic frameworks. It is noteworthy to mention that PCF-1 is stable in both acidic and alkaline media, which is not commonly observed for most of the porous materials trialed as proton conducting materials, including metal–organic frameworks.
Applications: Applied to processing tungsten carbide, PCD die, stone materials, ceramics, gems and optical glass, PCD workpiece, etc. Nanoscale micron powder NANO-M: Product description: High strength and toughness properties, epigranular, low content of impurities,perfect shapes and surface performances, powerful grinding force. Applications : This product superiority, makes it especially suitable for finishing and polishing all kinds of hard brittle materials, for example, cemented carbide, fine ceramics, precious gems and granite. Specific surface area of nano diamond improves an order of magnitude more than common diamond. 5. Superhigh purity, main metal impurity below ppm, purification and surface modification treatment for different needs make surface functional group controllable. 6.Characteristic surface modification treatment makes stable dispersion in both water & oil medium. 8 510 W10 2000# 4.79. 3 812 W14 1200# 7.815. 5 1020 W20 800# 9.317. Alibaba.com offers 3,181 nano diamond products. About 16% of these are abrasives, 14% are loose gemstone, and 1% are rings. A wide variety of nano diamond options are available to you, such as free samples, paid samples. There are 3,165 nano diamond suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and India, which supply 94%, 2%, and 1% of nano diamond respectively. Nano diamond products are most popular in North America, Southeast Asia, and Western Europe. You can ensure product safety by selecting from certified suppliers, including 871 with ISO9001, 636 with Other, and 241 with ISO14001 certification.
The book offers a comprehensive introduction to the different emerging concepts in the innovative area of sustainability and digital technology. More than 20 leading thinkers from the fields of digitalization, strategic management, sustainability and organizational development share clearly structured insights on the latest developments, advances and remaining challenges concerning the role of sustainability in an increasingly digital world. The authors not only introduce a profound and unique analysis on the state-of-the art of sustainability and digital transformation, but also provide business leaders with practical advice on how to apply the latest management thinking to their daily business decisions. Further, a number of significant case studies exemplify the issues discussed and serve as valuable blueprints for decision makers. Prof. Dr. Thomas Osburg is Associate Professor for Sustainable Marketing & Leadership and Director of the CircularKnowledge Institute, an International Research Think Tank and Strategic Advisory. For more than 25 years, Thomas worked for global IT companies in leading international management positions, with a focus on strategic planning and leadership, sustainable marketing, social innovation and corporate social responsibility (CSR) across Europe. Thomas is on the Board of Directors for ABIS and was appointed into scientific MBA committees across Europe. He is teaching MBA classes on "Technology and Innovation Management", "Strategic Marketing", "Social Innovation", "Entrepreneurship" and "CSR" at leading universities in Europe. He has published several books on Social Innovation and CSR Marketing and has written over 30 scientific contributions for leading European journals.
The model C100 Manual Squeeze Off Tool is designed to squeeze 1/2″ to 2″ PE pipe safely and effectively. The C100 features 6-sided, positive locking indexable gauge plates, aircraft grade aluminum squeeze bars, chrome plated steel side shafts and a coated feed screw, reducing corrosion and friction. This tool can be operated with the detachable torque bar or with a ratchet on the integral hex at the top of the feed screw.The unique swing-out / lock-in bottom bar design allows for quick and easy access to the pipe even in confined spaces, and the detachable stabilizing bar provides added stability during the squeeze process. The C100 also offers an optional grounding spike, and custom gauge plates are available upon request.
Atlas Web Technologies provides the roofing industry with a coated fiberglass facer (CGF) that is applied to foam panels thus giving superior dimensional stability, increased wind uplift, water resistance, fire resistance as well as many other benefits. WEBTECH CGF provides superior weather resistance that allows commercial and residential builders to apply the insulation panels with little to no cupping or bowing. Testing of WEBTECH CGF shows it will not support the growth of mold and mildew. Extruded polystyrene (XPS) foam insulation is a rigid, closed-cell foam product that can be used in various applications for insulating building foundations. Foam plastics are composed of millions of tiny cells or bubbles. Closed-cell foam, so called because the cells are intact with no holes or spaces between them, is stronger in bending and compressive strength than open-cell foam in which the cells have holes connecting one cell to another. In addition, XPS tends to maintain its R-value over time due to its moisture resistant properties.
Sycor’s MGT high-temperature wire is flexible and has a high resistance to flame, heat and abrasion. MGT is a strong solution for extreme temperature cabling needs because of its consistent strength, high level of flexibility and versatility in difficult high-temperature applications. Sycor’s MGThigh-temperature wires may be used for applications where consistent extreme temperatures are essential such as iron mills, steel mills, glass plants and cement kilns. The MGT high-temperature wire also is protected from mechanical damage during handling, installation and servicing.
My current research interests are in the design of the next generation of nano-lasers based on metamaterials and 2D materials such as graphene. This includes the optimisation, simulation, and analysis of metamaterial devices for plasmon amplification, non-linearities, and spatio-temporal dynamics. It involves techniques such as evolutionary algorithms, transformation optics, and multi-scale analysis. Applications include stopped light and stopped light lasing, and photonic condensation. I am also interested in the electronic and optical properties of two-dimensional materials such as graphene, hexagonal boron nitride, and transition metal dichalcogenide monolayers, particularly in regimes of non-equilibrium carrier distributions and ultrafast relaxation.
We provide an extensive food conveyor and processing belt range featuring high-quality coating materials suitable for all modern food processes. These belts offer excellent release properties for all kinds of sticky foodstuffs, combined with sophisticated chemical resistance against current cleaning agents. Our belts offer outstanding performance and a superior service life, as well as full compliance with EU and FDA regulations.
The HP Business Inkjet 2600 printer measures 28.5 X 22.4 X 11.1 inches and weighs about 39.7 lbs. Print speed can reach up to 15 pages per minute for black and 11 pages per minute for color outputs. Maximum resolution is 1200X600 dpi using high quality HP Business Inkjet 2600 ink cartridges. Maximum media size supported is 13 in X 19 in for the HP Business Inkjet 2600 printer. Both PC and Mac operating platforms are supported by the HP Business Inkjet 2600 printer. The 2600DN model comes with in-built duplexing and networking capabilities. There is one ink model for the HP Business Inkjet 2600 printer - C4844A. The ink can print up to 1,750 pages at 5% coverage. Users can seek for high quality re-manufactured cartridges at an affordable price to save more on printing expenses. In fact, a well made compatible cartridge should work as well as name brand counterparts. In addition, the use of compatible cartridges does not void the HP Business Inkjet 2600 printer warranty.
The 3101 dry-well temperature calibrator features an easy to read LED display with a temperature range of -10 to 110°C with a resolution of 0.1°C. Heating time, ambient to 100°C or cooling time, ambient to 0°C is 10 minutes. The 3101 temperature calibrator is excellent for checking the calibration of a wide range of instrumentation including digital thermometers and temperature probes that need calibration checks, either below or above ambient temperature. The unit incorporates two removable wells/inserts, both Ø13mm in diameter and will accept probe sizes Ø3.3, 4.1, 4.8, 6.4 and 9.6mm. Each 3101 is supplied with two inserts of the customer's choice. To order online please enter your 2 chosen insert sizes in the drop-down, then add to your shopping basket. User manual for the ETI 3101 Dry Well calibrator.
Photonic crystals market is divided based on its types into one dimensional, two dimensional and three dimensional. Currently, two-dimensional type segment holds significant share owing to its dimensional cross-sectional structure which includes, honeycomb lattice, hexagonal lattice and square lattice. The dominance of the segment is likely to be the same due to its easy analysis coupled with ease to formulate properties. The complexity involved in producing three dimensional will further enhance the two dimensional photonic crystals market. Various applications of photonic crystals market are discrete and integrated optical components, lasers, solar & PV cells, image sensors, LEDs and optical fibres. Optical fibre contributes majorly owing to its superior properties of controlling flow of light and freedom to design by achieving specific properties. LEDs application follows the trend after optical fibres. Solar and PV cells is likely to grow with significant CAGR in the forecast period owing to increasing use of solar energy over fossil fuels in various industries. Some other wide applications of the product include manufacturing of thin film optics that need high or low reflection coatings over lenses or mirrors. Based on the end user industry, photonic crystals market is categorized into industrial, aerospace, defence, and healthcare industry. industrial applications hold the major market share owing to increasing use of product in lightings, displays, optical sensing and solar energy. North America photonic crystals market has evolved gradually and is anticipated to register significant gains in projected years. The advent of multiple high-tech technologies and advancements has diversified the application range of product market which is having a positive outlook on the industry demand. Upsurge in aerospace & defence industries in the region has raised the product usage. Europe is booming at a substantial rate in photonic crystals market followed by North America and is expected to soar at moderate CAGR owing to rising R&D activities in the region. Several market leaders are trying to innovate new technologies enhancing the applications of the product. Asia-Pacific is considerable photonic crystals market owing to growing number of initiatives in R&D activities. Further, increasing government support and research & development operations in Australia, China, Japan and Korea has augmented the product usage in the region. Increasing use of 2-D in various commercial applications will fuel the photonic crystals market between 2017 and 2024. Photonic Crystals Market size has experienced a significant growth in past couple of years and is expected to soar at high CAGR during the forecast years. The growth is attributed to rise in demand of product in LEDs and increased research and development operations in various region. Additionally, its demand is also increasing due to its excellent properties including unusual optical dispersion and exceptional control over light behaviour. Advancement of green photonics innovations and economic improvement in emerging economies are anticipated to offer enormous growth potential opportunities. Increasing applications of LEDs, images sensors, laser and solar cells has foster the photonic crystals market in last five years. Currently, the product is a subject of interest for modern industry research as well as academics. These crystals are optical Nano-structures having dielectric materials assembly that possess distinct refractive indices. It is generally used for novel applications including bio-photonics, quantum engineering, optoelectronics and optics. Flourishing optics industry owing to modern lifestyle of today’s era and ongoing research on the product will fuel photonic crystals market till 2024.
We are also manufacturing and supplying our clients with a full range of insert molded components that meet the exact demands of different OEM in and outside the country. These insert molded components are fabricated using grade one raw material rendering them with flawless performance for a durable period of time. We also offer these products with custom design as per industry specific requirement of clients. For more information, please contact us.
To top even this, the LaserMat® II from Messer offers bevel cutting in stainless steel that fulfills highest requirements. In mild steel, besides straight cuts, also V- and Y- cuts are possible. Here a deep know-how of the application is needed, especially when two cuts along one contour are made. Maximum angles of -45° to +50° and maximum thicknesses of 15 mm are possible.
The research activity focuses on the development and the validation of emerging technologies, related to Virtual and Augmented Reality, to support the development of industrial products. Ergonomic analysis in Mixed Reality: in this activity technologies of Virtual Reality have been analyzed and used. Example of these technologies are: tracking systems and systems of stereoscopic vision (HMD) connected to a software that uses virtual dummies to conduct some ergonomic analysis. In this way it has been possible to carry out tests on virtual prototypes considering both qualitative and quantitative aspects related to the ergonomics of the prototype itself. In particular, the study focused on the evaluation of the ergonomics of the interior of a car. The use of Mixed Reality, that is the ability to view virtual objects inside a real scene, has lead to a greater involvement of users during the testing sessions, since this gives the opportunity of seeing users’ bodies interacting with the virtual prototype. The testing phase has allowed us to highlight some defects in the functional and the postural design of the product that would have been hardly detectable by using the traditional techniques of visualization. Stereoscopic vision: this research has addressed one of the key problems concerning the display of three-dimensional environments in Mixed Reality, which is the difficulty of maintaining the perspective of the virtual objects in relation to the real ones composing the scene. This difficulty derives from a number of parameters such as distance interpupillary, eyesight angle, parallax angle. These parameters depend on other factors such as the Focus, which varies according to what the user is observing. Thus, we have tried to find a way to appropriately define the values of these parameters, providing an effective tool for the comparison among the presumable values and those actually used. As result of this research activity, it has been developed a prototype of the system, which aim at solving and overcoming these issues.
Measurement technology for electronics such as printed circuit boards, surface-mounted components and semiconductors. As the electronics industry makes use of ever thinner coatings, manufacturers increase their demands on measuring technologies to provide reliable parameters for product monitoring and control. The coating system Au/Pd/Ni is frequently used in the electroplating of leadframes, with CuFe2 (CDA 195) as substrate material. Typical coating thicknesses are between 3-10 nm Au and 10-100 nm Pd. For monitoring the quality of these coating systems, X-ray fluorescence instruments have established themselves as the measurement method of choice. Bronze foils/strips are used for a huge variety of industrial applications, ranging from electrical contacts and membranes to spring elements and switches. The processing industry requires CuSn6 foils with more and more specific characteristics, e.g. significantly higher mechanical load-carrying capacity. To guarantee consistent quality, the mechanical characteristics of the foils must be determined. Because EU directives like EU2002/95/EC and EU2002/96/EC prohibit lead and other heavy metals, the solderable coating systems used on printed circuit boards must now be lead free. However, immersion tin carries the risk that, due to diffusion processes, the usable tin remaining in the plating can be insufficient to guarantee the success of solder processes and the quality of solder joints. Therefore the thickness of the pure tin in the coating must be checked before soldering. Due to growing restrictions on the use of lead in electronic products, efforts have been made to find appropriate substitutes. In the advanced IC packaging industry, the formerly ubiquitous, high-quality – but hazardous – eutectic SnPb solder bumps are now gradually being replaced by lead-free technology, such as SnAgCu alloy solder bumps. Because these new alloys require a certain composition in order to assure solderability and other mechanical properties, they must be measured precisely. Modern printed circuit boards (PCBs) are furnished with a huge number of contact points for electrical connections, all of which are coated with metal. The metrological monitoring of these coated areas is imperative for precise process control. But especially for large-scale boards, manual positioning on these tiny measuring spots is simply unfeasible. Determining the coating thickness of standard PCB applications must be fast, precise, non-destructive and cost effective. Ever-higher volumes of standard PCBs are being produced with ever-thinner coatings, often using precious metals and requiring testing on ever-smaller structures. Plus, to be suitable for this purpose any instrument must cope with further sample handling challenges such as flexible or oversized PCBs. To prevent solder from bridging conductive traces and causing short-circuits, while undergoing the soldering process printed circuit boards (PCBs) are coated with a non-conductive lacquer to which solder will not adhere. This ‘solder mask’ also safeguards the board’s circuitry against environmental influences and improves electric strength. With so much depending on this important layer, it is obvious that its quality should be monitored during manufacture. As electronic devices get smaller and smaller, conducting paths must be positioned even more closely together on printed circuit boards(PCBs). This is why, today, most PCBs are multilayered.In order to transfer electronic signals through to all the layers, these are connected byplated through-holes, also called vias (verticalinterconnect access), which are electroplated withan electrically conductive material such as copper.To ensure proper function, the hole lining must be uniform. Conformal coating material is applied to electronic circuitry to act as protection against moisture, dust, chemicals, and temperature extremes. Coatings on assemblies which are too thin or totally uncoated and therefore non-protected board parts could result in damage or malfunction of the electronics. As the electronics industry makes use of ever thinner coatings, manufacturers increase their demands on measuring technologies to provide reliable parameters for product monitoring. One example is the Au/Pd/Ni/Cu/printed circuit board system with coating thicknesses for Au and Pd of just a few nm. For monitoring the quality of these coating systems, X-ray fluorescence instruments have established themselves as the measurement method of choice.
Multiparametric-MRI in diagnosis of prostate cancer. Multiparametric-magnetic resonance imaging (mp-MRI) has shown promising results in diagnosis, localization, risk stratification and staging of clinically significant prostate cancer. It has also opened up opportunities for focal treatment of prostate cancer. Personalized precision radiotherapy by integration of multi-parametric functional and biological imaging in prostate cancer: A feasibility study. BACKGROUND - To increase tumour control probability (TCP) in prostate cancer a method was developed integrating multi-parametric functional and biological information into a dose painting treatment plan aiming focal dose-escalation to tumour sub-volumes.
Miracote Poly Fabric is an alkaline resistant polypropylene woven-mesh fabric designed to reinforce Miracote waterproofing and traffic surfacing systems. Miracote Poly Fabric adds strength and serves as a control to insure proper application thickness as well as providing a continuous coating over cracks and joints. Miracote Poly Fabric is used in waterproof membranes and cementitious coatings beneath ceramic tile, marble, quarry tile, latex mastic surfacing and certain types of between slab or below-grade membranes.
Texture analysis is gaining considerable interest in medical imaging, in particular to identify parameters that might characterize tumor heterogeneity. We developed an easy-to-use freeware enabling calculation of a broad range of conventional, textural and shape indices from PET, MR, US and CT images. The software is written in Java and does not rely on any commercial libraries. LIFEx is dedicated to researchers, radiologists, nuclear medicine physicians and oncologists that giving access to 42 histogram, textural and shape indices in addition to conventional indices and where users can change calculation options (e.g. resampling method and number of grey levels for textural analysis). LIFEx reads DICOM images locally or over a network using a DICOM browser, is compatible with Osirix and includes a powerful 3D reconstruction-based slice viewer. Volumes of interest (VOI) can be either imported from previously created files or drawn and manipulated using LIFEx. Results are exported in Excel format files. LIFEx runs on Windows, MacOs and Linux. It is distributed with examples and includes a tutorial. User support is available. Users can optionally contribute to the gathering of index values measured in different tissue types and different images as a public data bank of reference values is currently being built and integrated in the software for assisting the users with the interpretation of their results. LIFEx has already been distributed to research labs, nuclear medicine departments and radiology departments for investigating different tumor types (gliomas, cervix, lung, breast, and colorectal tumors), and has been very positively received. The intuitive interface associated with the tutorial made it fast to master for staff, and allowed us to start building databases of normal textural values in brain (white and grey matter), breast, liver, lung, fat, and muscles for various imaging equipment and protocols in PET and CT, while MR data are currently being collected and processed. Such data enable an accurate characterisation of the variability of different textural indices in a given imaging modality as a function of the scanner and the imaging protocol. New indices are being implemented based on users requests as the software is intended to evolve over time based on advances in the field. You can download the LIFEx software for free once you have created an account and received your account validation (time estimated is one working day). Once your account has been validated, you can start downloading the installation package of the version corresponding to your operating system and follow the instructions available in the download section.
This paper presents a mathematical model and vertical flight control algorithms for a new tilt-wing unmanned aerial vehicle (UAV). The vehicle is capable of vertical take-off and landing (VTOL). Due to its tilt-wing structure, it can also fly horizontally. The mathematical model of the vehicle is obtained using Newton-Euler formulation. A gravity compensated PID controller is designed for altitude control, and three PID controllers are designed for attitude stabilization of the vehicle. Performances of these controllers are found to be quite satisfactory as demonstrated by indoor and outdoor flight experiments.
Estimating changes in camera parameters, such as motion, focal length and exposure time over a single frame or sequence of frames is an integral part of many computer vision applications. Rapid changes in these parameters often cause motion blur to be present in an image, which can make traditional methods of feature identification and tracking difficult. In this work we describe a method for tracking changes in two camera intrinsic parameters - shutter angle and scale changes brought about by changes in focal length. We also provide a method for estimating the expected accuracy of the results obtained using these methods and evaluate how the technique performs on images with a low depth of field, and therefore likely to contain blur other than that brought about by motion. Inferring changes in intrinsic parameters from motion blur. / Barber, Alastair; Brown, Matthew; Hogbin, Paul; Cosker, Darren. In: Computers & Graphics, Vol. 52, 11.2015, p. 155-170. Barber, Alastair ; Brown, Matthew ; Hogbin, Paul ; Cosker, Darren. / Inferring changes in intrinsic parameters from motion blur. In: Computers & Graphics. 2015 ; Vol. 52. pp. 155-170. N2 - Estimating changes in camera parameters, such as motion, focal length and exposure time over a single frame or sequence of frames is an integral part of many computer vision applications. Rapid changes in these parameters often cause motion blur to be present in an image, which can make traditional methods of feature identification and tracking difficult. In this work we describe a method for tracking changes in two camera intrinsic parameters - shutter angle and scale changes brought about by changes in focal length. We also provide a method for estimating the expected accuracy of the results obtained using these methods and evaluate how the technique performs on images with a low depth of field, and therefore likely to contain blur other than that brought about by motion. AB - Estimating changes in camera parameters, such as motion, focal length and exposure time over a single frame or sequence of frames is an integral part of many computer vision applications. Rapid changes in these parameters often cause motion blur to be present in an image, which can make traditional methods of feature identification and tracking difficult. In this work we describe a method for tracking changes in two camera intrinsic parameters - shutter angle and scale changes brought about by changes in focal length. We also provide a method for estimating the expected accuracy of the results obtained using these methods and evaluate how the technique performs on images with a low depth of field, and therefore likely to contain blur other than that brought about by motion.
Platform is made of PVC plate preventing corrosion by acid or alkaline solution. Universal shaker allows beakers, flasks, test tubes, reagent bottles to be fit on the platform. Precise shaking speed control is ensured by microprocessor feedback control system. Digital timer displays accumulated time as well as remaining time of operation.
Hydrology Research (2012) 43 (6): 753-761. The scientific literature has widely shown that hydraulic modelling is affected by many sources of uncertainty (e.g. model structure, input data, model parameters). However, when hydraulic models are used for engineering purposes (e.g. flood defense design), there is still a tendency to make a deterministic use of them. More specifically, the prediction of flood design profiles is often based on the outcomes of a calibrated hydraulic model. Despite the good results in model calibration, this prediction is affected by significant uncertainty, which is commonly considered by adding a freeboard to the simulated flood profile. A more accurate approach would require an explicit analysis of the sources of uncertainty affecting hydraulic modelling and design flood estimation. This paper proposes an alternative approach, which is based on the use of uncertain flood profiles, where the most significant sources of uncertainty are explicitly analyzed. An application to the Po river reach between Cremona and Borgoforte (Italy) is used to illustrate the proposed framework and compare it to the traditional approach. This paper shows that the deterministic approach underestimates the design flood profile and questions whether the freeboard, often arbitrarily defined, might lead to a false perception of additional safety levels.
Modular units combine tables and seats in a wide range of seating arrangements enabling you to design your own layout. Maintain planned layout and eliminate furniture movement. One piece moulded polypropylene seats available in blue and are easy to clean.
The GAU-LB-400 Low Bay LED light consumes 40 watts of power while producing 1,462 lumens of white light. Features compact aluminum housing and 12 high output LEDs protected by a polycarbonate lens. The housing is powder coated, and is fully water and weatherproofed. The mounting assembly is vertically adjustable.
High-performance MOD 1.0 pinion gears, manufactured from special steel for toughness and durability or lightweight 7075 Hard Anodised aluminium with precise tolerances and assures unparalleled concentricity. Created on a special gear machine, all pinions feature ultra-precise tooth shaping and ultra-true running for vibration-free operation. Each pinion is marked with the tooth number for easy and quick identification.
Artificial light harvesting complexes find applications in artificial photosynthesis, photovoltaics and light harvesting chemical sensors. They are used to enhance the absorption of light of a reaction center which is often represented by a single acceptor. Here, we present different light harvesting systems on DNA origami structures and analyze systematically the light harvesting efficiency. By changing the number and arrangement of different fluorophores (FAM as donor, Cy3 as transmitter and Cy5 as acceptor molecules) the light harvesting efficiency is optimized to create a broadband absorption and to improve the antenna effect 1 (including two energy transfer steps) from 0.02 to 1.58, and the antenna effect 2 (including a single energy transfer step) from 0.04 to 8.7, i.e. the fluorescence emission of the acceptor is significantly higher when the light-harvesting antenna is excited at lower wavelength compared to direct excitation of the acceptor. The channeling of photo energy to the acceptor proceeds by Förster Resonance Energy Transfer (FRET) and we carefully analyze also the FRET efficiency of the different light harvesting systems. Accordingly, the antenna effect can be tuned by modifying the stoichiometry of donor, transmitter and acceptor dyes, whereas the FRET efficiency is mainly governed by the spectroscopic properties of dyes and their distances.
To pour the molten aluminium from melting or holding furnaces for aluminium casting, some units use tap hole block, which is sealed with Tap Out Cone. Vacuum Formed Cones are made from ceramic fiber. By using advanced technology and production technics. Cones have smooth surface and precise dimensions. The materials used are all purchased from superior suppliers which give the product good hardness and toughness. The cone can be operated either manually or by machine.
500 mm the Okamoto DX Series is ideally suited for the toolroom. standard equipment to ensure easy handling, quick and precise small part production. usage and increases productivity considerably. The ACC-CHiQ series meets the very highest requirements in terms of precision to be found in the manufacture for parts in tool and mould construction, in hot runner technology and punching die construction. The cross slideways can be adjusted mechanically and can be realigned at any time as needed. In doing so, the CNC does not need to be compensated which in turn affords advantages in a higher surface quality and smoothness. operation of the controls simplifies usage and increases productivity considerably. of the controls simplifies usage and increases productivity considerably. To avoid effects of heat expansion and vibration, the hydraulic unit is isolated from the main unit. For the purpose of long lifetime and maintenance free operation, oil lubrication with automatic lubrication is applied to the guide and slide way. Combination of both scraped V-V slide way and low friction Turcite assure accurate grinding for life. All castings exhibit high static and dynamic stiffness and excellent damping qualities.
The topics on conversion and utilization of methane and carbon dioxide are important issues in tackling the global warming effects from the two greenhouse gases. Several technologies including catalytic and plasma have been proposed to improve the process involving conversion and utilization of methane and carbon dioxide. In this paper, an overview of the basic principles, and the effects of CH4/CO2 feed ratio, total feed flow rate, discharge power, catalyst, applied voltage, wall temperature, and system pressure in dielectric-barrier discharge (DBD) plasma reactor are addressed. The discharge power, discharge gap, applied voltage and CH4/CO2 ratio in the feed showed the most significant effects on the reactor performance. Co-feeding carbon dioxide with the methane feed stream reduced coking and increased methane conversion. The H2/CO ratio in the products was significantly affected by CH4/CO2 ratio. The synergism of the catalyst placed in the discharge gap and the plasma affected the products distribution significantly. Methane and carbon dioxide conversions were influenced significantly by discharge power and applied voltage. The drawbacks of DBD plasma application in the CH4–CO2 conversion should be taken into consideration before a new plausible reactor system can be implemented.
Herein is described a facile method for the assembly of plasmonic gold nanoparticles into smart plasmonic core–satellite nanostructures that allow for the dynamic and reversible tuning of the localised surface plasmon resonance using temperature. This smart system takes advantage of the thermoresponsive polymer linker that modulates the gap distance between the core and satellites in response to the temperature, resulting in the tuning of the surface plasmon coupling and resultant optical shift. It permits optical shifts over a wide wavelength range and reversible control of the optical properties by altering the temperature, which may allow these systems to become candidates for temperature sensitive nanosensors.
Functional and light, thin and flexible. What was previously not compatible, is now possible with Printed Electronics. Printed electronics refers to the combination of conductive materials as well as varnish and ink systems, transferred in multiple layers to large areas of film, paper or other substrates at low cost. They perform functions of conventional electronics with special processing possibilities. Be it conductive tracks, resistors or other technical functions films, in particular, can be printed and converted to feature any desired property. The film remains light, thin and flexible—one of the basic prerequisites for space-saving installation in a wide range of products. Schreiner PrinTronics has extensive know-how in the field of printing silver, carbon, insulation and die-cutting of metal foils as well as contacting and industrial processing from roll to roll. Based on a solid know-how in the printing of silver, carbon, insulation and conducting, as well as in the die-cutting of metal foils, Schreiner PrinTronics has further developed the pressure of electronics from roll to roll with high precision. Conductive sheets are realized by punching or screen printing of silver and carbon paste. The research and development of Schreiner PrinTronics covers the integration of functional conductive structures, chips, LEDs and flat and flexible batteries. Schreiner Group (Shanghai) Co., Ltd.
Delta GBN Ltd production plant offers complete anti–corrosion coating systems for both small and large components using Dip Spin, Dip Drain and Spray application methods. Zinc Flake coatings such as Delta Protekt® KL100 and Delta Tone® 9000 are cured at relatively low temperatures (220°C), are Cr6 free and do not induce hydrogen embrittlement. They are widely used where high levels of corrosion resistance are required for the protection of a wide range of components from small fasteners and springs to engine heat shields and large fabrications. When combined with Delta MKS Topcoats (solvent or water based), Torque Tension values can be maintained and Bi-Metallic corrosion prevented. We can also apply Xylan, Molycote, and water based materials. Click here to get a quote from Delta GBN today! "Anyone looking for high corrosion protection can now confidently dispense with Chrome VI" © Delta GBN Ltd 2010, Click HERE for our terms and conditions.
The XA1210 supports tracking of GPS+Glonass satellite systems to deliver superior positioning accuracy of <2.0 meters. The XA1210 has an ultra-compact form-factor of 12.5x12.5 mm and is backwards compatible with the XA11 series modules. The XA1210 incorporates a complete set of high-quality components, including TCXO, RTC Crystal, SMPS, SAW-Filter and an additional LNA, which guarantee optimum positioning performance. The XA1210 comes integrated with a highly optimized GPS+Glonass patch antenna and is ideal for applications looking to add basic GNSS tracking features.
For the measurement of the electrical transport dynamics in the semiconductors, nanocrystals, and other materials on the picoseconds time scale, optical pump - THz probe technique can be used. THz radiation emitter and detector for the measurements are made as dipole antenna on LTG GaAs layer and are activated by the parts of Ti:sapphire laser beam. The third part of the same laser beam is used for the photoexcitation of the samples. Excitation levels up to 100 nJ/cm2 can be achieved; excitation levels up to 2 µJ/cm2 can be achieved using the metallic aperture with the diameter of 300 µm. Both - optical pump and THz probe beams overlap at this aperture. Fig. 1 Optical pump THz probe experiment scheme. The dependence of the THz transient signal at its maximum amplitude is measured at different delays of the optical pump pulse. Fig. 5 shows the temporal dynamics of the optical pump induced change in the transmittance at THz frequencies measured by this technique. Fig. 2 Electrical transport Dynamics of the different GaAs samples. Temporal resolution of this experiment is determined by the response of the detector measuring THz transients and is approximately equal to 1-1.5 ps. Maximum temporal range of the experimental setup is 600 ps (limited by the optical delay line length). The measurements can be done in transmission or reflection geometry and wide temperature range (from 10 to 300K). Electromagnetic radiation in the terahertz frequency range (0.1 THz - 4 THz) has many important applications in the areas of spectroscopy, detection, and security. Fig. 3 THz-TDS spectrometer "T-Spec". In the "T-Spec" spectrometer (Fig. 1) few-cycle THz pulses are generated by exciting an electrically biased photoconductive dipole with an ultrafast laser pulse (<100 fs). The resulting photo-generated current responds on a picosecond timescale and leads to THz electromagnetic pulse radiation. High-resistivity Si hyperhemispherical lenses are used to improve the outcoupling efficiency of the THz radiation generated in the GaAs substrate of the photoconducting dipoles into the free space. Additionally, off-axis parabolic mirrors are used to focus THz radiation to the sample. Fig. 4 Transmission and reflection modules. "T-Spec" has two modules: transmission (Fig. 2a) and 0 angle reflection (Fig. 2b). Exchange of the modules takes no more than a few seconds and no additional alignment is needed. On both modules, XY stage, with scanning range of 25x25mm, can be used for imaging experiments. FFT spectrum of the measured THz pulse transients can reach up to 4 THz (Fig. 3). Powders and liquids can be characterized in both configurations using standard optical spectroscopy cells. Fig. 5 Comparison of the FFT spectrum in transmission and reflection configurations. The use of the instruments described above is free of charge under the self-service basis. In case of the experiments on request 100 EUR/day charge will apply (one working day is minimum). All the conditions of the experiment and the results will be briefly reported (3-10 p. report). Number of the samples measured per one working day depends on the experiment, for example: 1 sample per day if optical pump-THz probe measurement is done in low temperature (10-270 K) or 5-7 samples if in room temperature; for spectroscopy experiments, measurement speed is approximately 5 samples/hour. Imaging speed depends on the number of pixels. For example 10 000 pixels image of the shaving blade (Fig. 1 software window) can be done in approximately 2 hours (time includes sample preparation, positioning etc.). For special experimental conditions please contact us directly.
Delo® Synthetic Transmission Fluid SAE 50 is a premium performance, synthetic-based, non-EP heavy-duty manual transmission oil with excellent thermal and oxidation resistance. Minimizes operating costs Rapid circulation and reduced drag on gears reduces gear wear, and provides fuel economy benefits. Reduces maintenance Excellent thermal and oxidative stability reduces deposit formation under severe operating conditions. This keeps gears and bearings cleaner, preventing oil film disruption which can result in increased wear rates. Effective anti-rust additives protect transmission components. High oxidation stability provides extended drain intervals. Minimizes inventory costs Naturally high viscosity index ensures effective lubrication over a wide range of temperatures. This allows use in a variety of applications, and eliminates any need for separate summer and winter grade gear oils. It is designed to provide excellent protection for non-synchronized heavyduty manual transmissions and automated manual transmissions (AMTs) which do not require EP type gear oils. The superior properties of the synthetic base fluid are further enhanced with anti-wear agents and rust and oxidation inhibitors. North American type, heavy duty non-synchronized manual transmissions and automated manual transmissions such as those manufactured by Eaton and Mack.
Abstract: In this paper, we summarize our recent research work on two types of optical fiber sensors: long distance sensor and biomedical sensor. For long distance sensing, we demonstrated our 150-km long distance fiber Bragg Grating (FBG) temperature and vibration sensor system and Brillouin optical time domain analysis distributed sensor system. For biomedical sensing, we demonstrated our microbend fiber sensors for measurements of breathing rate/heat rate and Ballistocardiogram waveform. A new sensor for patient's breathing measurement by using fiber loop ringdown spectroscopy is also introduced. © 2013 IEEE.
Shape: U, I ,H ,T, triangle, angle, hexagonal, etc. We hold expertise in manufacturing and supplying Aluminum Profile For Solar Bracket that are widely used for mounting solar panels. available with customized dimensions as per client requirements. 4) Shape: U, I ,H ,T, triangle, angle, hexagonal, etc. 2) Anodized aluminum construction stainless steel assembly hardware included. 4) Especially beneficial over winter months when there is less sunlight. Gain up to 25% more solar panel efficiency by tilting your panels towards the sun instead of laying them flat. 5) Designed for solar systems,can be used on roofs, sheds, garages or other flat surfaces to tilt solar panels, or ground.
Microcrystalline Cellulose 101 exhibits excellent properties as an excipient for solid dosage forms. It compacts well under minimum compression pressures, has high binding capability, and creates tablets that are extremely hard, stable, yet disintegrate rapidly. Other advantages include low friability, inherent lubricity, and the highest dilution potential of all binders. These properties make Microcrystalline Cellulose 101 particularly valuable as a filler and binder for formulations prepared for direct compression. Also, it has proven to be stable, safe and physiologically inert. Microcrystalline Cellulose 102 also exhibits excellent properties as an excipient for solid dosage forms. It compacts well, has high binding capability and creates tablets that are hard, stable, yet disintegrate rapidly. It differs from Microcrystalline Cellulose 101 by the size and shape of the particle - MCC102 has larger particles which are more round and dense. It is not as fluffy and light as MCC101, therefore MCC102 has better flow properties than MCC101. MCC102 has proven to be stable, safe and physiologically inert.
8. Recessed installing, surface installing,hanging installing optional . 5. Guide plate & diffuser plate adopt Japan or Taiwan original optical material. 7. The main parts such as heat sink frame adopt high thermal dissipation material--6063-T5 Aluminum.
Glass additives market size from packaging application should grow significantly owing to rising popularity among consumers for specialized product offering scratch resistance, anti-glare, UV protection and durability. Growing population along with busy work schedule imparts higher demand for packaged food & beverage implying growth in product demand. Recyclability of these products satisfy food security needs and policies by FDA’s GRAS, finding extensive demand in food & beverage packaging industry. Availability of alternatives like plastics and fibers, unavailability of raw earth metal and low-cost plastic compounds should impact glass additives market price trends. Sourcing raw materials and influence of nanoparticle technology should further propel product demand. Global glass additives market share is moderately fragmented including industry participants like DuPont, SCHOTT, Gillinder Glass, Nanobase and BASF SE. Companies are concentrating on customized product development for sustainability in market. They also are adopting strategies like mergers, partnerships and acquisition to expand their forward and backward integration in the value chain.
"Dependence of Ice-Core Relative Trace-Element Concentration on Acidifi" by Bess G. Koffman, Michael J. Handley et al. To assess the role of methodological differences on measured trace-element concentrations in ice cores, we developed an experiment to test the effects of acidification strength and time on dust dissolution using snow samples collected in West Antarctica and Alaska. We leached Antarctic samples for 3 months at room temperature using nitric acid at concentrations of 0.1, 1.0 and 10.0% (v/v). At selected intervals (20 min, 24 hours, 5 days, 14 days, 28 days, 56 days, 91 days) we analyzed 23 trace elements using inductively coupled plasma mass spectrometry. Concentrations of lithogenic elements scaled with acid strength and increased by 100–1380% in 3 months. Incongruent elemental dissolution caused significant variability in calculated crustal enrichment factors through time (factor of 1.3 (Pb) to 8.0 (Cs)). Using snow samples collected in Alaska and acidified at 1% (v/v) for 383 days, we found that the increase in lithogenic element concentration with time depends strongly on initial concentration, and varies by element (e.g. Fe linear regression slope =1.66; r = 0.98). Our results demonstrate that relative trace-element concentrations measured in ice cores depend on the acidification method used. Koffman, Bess G.; Handley, Michael J.; Osterberg, Erich C.; Wells, Mark L.; and Kreutz, Karl J., "Dependence of Ice-Core Relative Trace-Element Concentration on Acidification" (2014). Open Dartmouth: Faculty Open Access Articles. 2625.
The correlation between radio spectral index and redshift has been exploited to discover high-redshift radio galaxies, but its underlying cause is unclear. It is crucial to characterize the particle acceleration and loss mechanisms in high-redshift radio galaxies to understand why their radio spectral indices are steeper than their local counterparts. Low-frequency information on scales of similar to 1 arcsec are necessary to determine the internal spectral index variation. In this paper we present the first spatially resolved studies at frequencies below 100 MHz of the z = 2.4 radio galaxy 4C 43.15 which was selected based on its ultrasteep spectral index (alpha < -1; S-v similar to v(alpha)) between 365 MHz and 1.4 GHz. Using the International Low Frequency Array Low Band Antenna we achieve subarcsecond imaging resolution at 55MHz with very long baseline interferometry techniques. Our study reveals low-frequency radio emission extended along the jet axis, which connects the two lobes. The integrated spectral index for frequencies <500 MHz is -0.83. The lobes have integrated spectral indices of -1.31 +/- 0.03 and -1.75 +/- 0.01 for frequencies = 1.4 GHz, implying a break frequency between 500 MHz and 1.4 GHz. These spectral properties are similar to those of local radio galaxies. We conclude that the initially measured ultrasteep spectral index is due to a combination of the steepening spectrum at high frequencies with a break at intermediate frequencies.
The Clarkester™ Tester accurately calibrates tightening tool torque to bolt tension, prior to installation, to virtually eliminate loose and broken bolts in structural and mill liner applications. The Clarkester™ is available with load capacity up to 250,000 pounds and bolt sizes up to 2 ½”. In addition, torque capacity is considerably higher than that of currently available testers, thereby enhancing the integrity of your bolted joints. In the assembly of bolted joints, using torque as a measure of joint tightness has plagued the fastener industry. The Clarkester™ Tester was created to address this mystery. Errors in target joint clamp load, or bolt tension, of up to 50% may result from using this dated tightening method. We at Valley Forge have worked diligently to create a method to reduce these errors for our customers. Accurate and reliable bolt tension measurement in the Clarkester™ Tester is assured using Valley Forge’s SPC4™ load indicating system, which can easily be verified for load accuracy. Clarkester™ Testers are available with load capacity up to 250,000 pounds and bolt sizes to 2 1/2”. In addition, torque capacity is considerably higher than that of currently available testers. Interchangeable load plates for various head configurations, including hex head, square head and mill liner bolts. New and replacement parts supplied overnight. Dependable trouble-free operation without oil and pressure gauges. Eliminates inaccuracies of out of calibration pressure gauges. No reaction pins to shear. Easy and quick calibration of load cell using SPC4™ technology. Self check calibration ability to verify rebuilt tensioning tools. The mystery of torque versus tension has forever intrigued the engineers that have tried to apply this method of tightening on fastened assemblies. The engineers have the daunting task of taking into account the condition of the fastener. For example, are the fasteners rusty, clean or lubricated? Will the fastener require lubrication prior to installation? These are only a few of the many possibilities that engineers must be faced with when a critical joint is encountered. HOW DOES TORQUE RELATE TO TENSION? The biggest element in this equation is the coefficient of friction of a fastened assembly, or the ‘K’ Factor. Below are a few scenarios depicting a rusty, plain and lubricated fastened assembly. Lubed Assembly: Thread and head bearing surfaces covered with high performance lubricants or with anti-seize compounds. Additional Lubed Assembly: Additional lubricating coatings of oil, wax or dissimilar plating or hard washer. Plain & Clean Assembly: Dry, clean with thin film of oil. Combinations of certain materials such as Austenite stainless steel screw/bolts. In order to demonstrate the variability in Torque needed for any critical joint, and how our Clarkester™ Tester can help take the guess work out of this age old mystery, we have calculated the Torque needed for each of the above scenarios.
Kingspan Therma TT47 LPC/FM is a tapered high performance, fibre-free rigid thermoset insulation, faced on both sides with a coated glass tissue autohesively bonded to the insulation core during manufacture. *Packer boards will be required above a specific thickness. The effective thermal conductivity and thermal resistance of the insulation in a tapered roofing system is specific to the individual roof design. The Kingspan Insulation Tapered Roofing Department performs calculations to determine these values in accordance with Annex C of BS EN ISO 6946: 2007 (Building components and Building elements – Thermal resistance and thermal transmittance – Calculation method) as part of the scheme design process. The roof insulation shall be Kingspan Therma TT47 LPC/FM ____ mm thick, comprising a CFC/HCFC-free and zero Ozone Depletion Potential (ODP) rigid thermoset insulation core with coated glass tissue facings on both sides, manufactured under a management system certified to BS / I.S. EN ISO 9001:2008, BS / I.S. EN ISO 14001:2004 and BS / I.S. OHSAS 18001:2007 by Kingspan Insulation Limited and shall be installed in accordance with the instructions issued by them. Kingspan Therma TT47 LPC/FM, when subjected to the British and Australian Standard fire test specified in the table below, will achieve the result shown, when waterproofed with a single–ply waterproofing membrane. Kingspan Therma TT47 LPC/FM, when subjected to the British Standard fire test, specified in the table below, will achieve the result shown when waterproofed with 3 layer built–up felt and a loading coat of 10 mm chippings. For specifications without the chippings please consult the manufacturer of the mineral surfaced cap sheet for their fire classification details. Kingspan Therma TT47 LPC/FM is certified as achieving Class 1 Insulated Steel Deck Pass to Factory Mutual Research Standards 4450 (Approval Standard for Class 1 Insulated Steel Deck Pass) and 4470 (Approval Standard for Single–Ply, Polymer–Modified Bitumen Sheet, Built–Up Roof (BUR) and Liquid Applied Roof Assemblies for use in Class 1 Non-combustible Roof Deck Construction), subject to the conditions of approval as a roof insulation product for use in Class 1 roof constructions as described in the current edition of the Factory Mutual Research Approval Guide. Metal deck roofing constructions incorporating Kingspan Therma TT47 LPC/FM, produced at Kingspan Insulation’s Pembridge and Castleblayney manufacturing facilities, have been successfully tested to LPS 1181: Part 1 (Requirements and Tests for Built–up Cladding and Sandwich Panel Systems for use as the External Envelope of Buildings).
United features Microsoft Windows® software programs for United tensile testing machines. From single test method programs to our DATUM software packages, United product software is known for its versatility and ease of use. BMS-i100 Optical Brinell Measuring System is portable easy operation with high definition USB camera.
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