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cwinkler

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stacked , lamellar constructs comprised of , synthetic or natural , polymeric membrane structures which are brought together to form 3d scaffolds for biomaterial and guided tissue engineering applications have been developed . each layer can have 2d or 3d nano and micro topographical features similar to or different than each other which can be arranged during the construction of each lamellae and their orientation can be adjusted during construction phase of the 3d structure . such a construct was utilized in the development of an artificial cornea with human primary cells , in which patterned surface of the components of the lamellar structure mimics the oriented collagen structure inherent in natural cornea . similar exploitation of the 3d patterned structure can be made for tissues where aligned ecm architecture is crucial , such as ligaments , bone , tendon , skin .

a bioabsorbable surgical implant for use in supporting soft tissue in a superior position in the body is described . the surgical implant includes a shaft that connects the implant to a bone or hard tissue and a head secured to the shaft . the head of the implant has a concave lower surface so that a suture can easily be wound around the shaft below the head and locked to this position by tightening the head against bone or hard tissue and by pushing or turning the shaft into the bone or hard tissue . the connected shaft and head are formed from a resorbable polymer , copolymer , polymer alloy or composite , which maintains a specified strength for a period of time at least equal to a healing period for the patient . thereafter , the surgical implant is substantially resorbed by the body over a period of time needed for healing . the surgical implant is particularly adapted for use in endoscopic face and / or brow lift surgery and other endoscopic cosmetic , plastic and reconstructive surgical procedures , where sutures are applied for tissue lifting .

the present invention describes the preparation of unimolecular polymeric micelles that bear a hydrophilic shell and a potentially ionizable and relatively hydrophobic core at a determined ph value . the core becomes electrostatically charged as the ph is changed . such micelles can be made from either biodegradable or non - biodegradable polymers . loaded drugs can be physically retained in the micelles when the ph of the surrounding medium favors interactions with the core . upon a change in ph , modification in the ionization state of the core will decrease the interactions between the drug and the inner core and facilitate the release of the micellar contents .

a method of non - delaminably bonding a non - porous thermoplastic elastomer to a substrate by heating a bilayer of the elastomer and the substrate for a predetermined time and a product obtained by the method . methods for producing non - delaminable conduits and non - delaminable kink - resistant conduits constructed of biocompatible elastomers and substrates , and products produced by these methods are taught . methods , products , and articles of manufacture relating to non - delaminable monofilament supported kink - resistive conduits that may be used as inflow conduits in left ventricular assist devices for treatment of heart failure are also provided .

the present invention is to provide an ink jet recording paper which is free from blurring , exhibits a highly developed color and has such a strength as to prevent a laminate film and an ink - receiving layer from being peeled by the wind or rain when the paper is posted outdoors after the appropriate film is laminated . the ink jet recording paper is provided with an ink - receiving layer , containing at least a resin and a pigment , on a substrate , wherein major components forming an anchor coating layer of the receiving layer are a styrene / acryl copolymer resin having a glass transition point of 0 ° c . or more and 20 ° c . or less and calcium carbonate .

water - soluble , biodegradable polymeric materials are provided for skin , hair and cosmetic use comprising the formula : ## str1 ## wherein a is a water soluble , biodegradable polymeric material containing a radical selected from the group consisting of hydroxy , amino , imino , thio and carboxy ; x is ## str2 ## r 1 is h , -- oh , -- cn , halogen or c 1 - c 4 alkyl ; r 2 is a saturated or unsaturated , at least bivalent hydrocarbon radical optionally substituted with one or more substituents selected from the group consisting of hydroxy -, amino -, c 1 - c 8 alkyl -, c 1 - c 8 alkoxy - and hydroxyalkyl groups which may be optionally substituted with one or more moieties selected from the group consisting of -- co --, -- o -- c -- o --, -- c -- o --, -- o --, -- o -- c --, -- s --, -- nr 4 --, -- nh -- c -- and -- nh -- c -- nh --; y is a connecting link to the main chain of the hydrocolloid a selected from the group consisting of -- o --, -- o -- c --, -- c -- o --, -- nh -- c -- and -- c -- nh ; r 3 and r 4 are independently h or alkyl ; and n is 0 to 5 .

a sealed bag containing a reference fluid for the calibration and / or quality control of a creatine and / or creatinine sensor , the bag comprising : an inner polymer layer and an outer polymer layer ; and an aluminium oxide gas barrier layer there between ; and wherein the inner polymer layer is in contact with the reference fluid .

a method of packaging an article comprises wrapping the article in a plastic film ; and heat sealing the film using a sealing apparatus comprising a main sealing element , and a second sealing element attached at an angle to the main sealing element , and shorter than the main sealing element , such that when the film is sealed , a sealed notch that can be used to initiate opening of the package is made . a package comprises an article wrapped in a plastic film , the film being heat sealed to form a seal , the seal comprising a main seal , and a second seal attached at an angle to the main seal , and shorter than the main seal , and defining a sealed notch that can be used to initiate opening of the package . a sealing apparatus for making an easily opened package comprises a main sealing element , and a second sealing element attached at an angle to the main sealing element , and shorter than the main sealing element , and capable of creating a sealed notch that can be used to initiate opening of the package .

the present invention relates to water - resistant , thermoplastic starch materials processable into environmentally safe , thermoplastically produced products and cast sheets , which consist of starch acyl compounds , obtainable from high amylose starches and the derivatives thereof and being sparingly soluble in water , and of plasticizers which like ethyl citrate , glycerol acetate and lactic acid ester have a gelatinizing effect and preferably a dissolution property resulting in brilliant transparence and , as can be proved , are biodegradable .

hydrophilic inter - penetrating network charge modified microporous membranes are provided as well as a method of preparing the membranes by casting a membrane matrix blend containing matrix polymer , a solvent system , a wetting polymer compatible with the matrix polymer , and a charge modified system which forms a cross - linked interpenetrating network structure within the microporous membrane substrate during the membrane fabrication process which network structure optionally can be locked in by heat curing . the membranes are useful for filtering ultrapure water with 18 megaohm - cm resistivity for the electronic industry , and they can also be used for the removal of a variety of contaminants from fluid media , such as very fine negatively charged particles , bacteria and endotoxins , with greatly enhanced filtration efficiency .

a method and apparatus for reducing starch loss in mogul machines . starch is lowered below the tray edge such that starch does not spill over the tray side walls when cavities are stamped into the starch for receiving liquefied candy material . the leveling device may include a brush and a resilient plastic blade . the leveling device recycles starch into a collection hopper .

a container constructed of plastic or like materials is provided which is generally constructed of three separate pieces in a rectangular form . four sides of the container are constructed of a single sheet of plastic which has been folded into a sleeve form while the remaining two surfaces are constructed of formed plastic or the like . the formed pieces snap fit into the sheet plastic portion . the container is ideally made entirely of clear plastic and enjoys the property of being easily assembled . the container cannot be disassembled without applying appropriate external forces ; a substantially greater force is required to disassemble the container than is required to assemble it .

a female mold for plastic sanitaryware manufacture has an open top to promote improved air escape from the mold as resinous backing resin fills the mold in order to reduce the number of gas inclusions within the backing material after it is cured . the female mold also provides thermal insulation for the curing backing material to permit better curing and to reduce the potential for delamination in the finished product . a production fixture is equipped with a gas impermeable lid for selective contact with the female mold , after the air has been expelled from the mold , in order to control undesirable styrene emissions .

polymer mixing apparatus strips oil from polymers in an oil phase continuous emulsion and at least partially hydrates the polymers by injecting the emulsion and a pressured aqueous solution into a mixing zone . the emulsion and solution are passed through a confined space , where the oil is stripped from the polymer molecules and at least partially hydrated . the resulting solution is removed from the confined space without recirculation through the confined space .

a method for depositing a film on a polymer substrate is disclosed . the method includes exposing a polymer substrate to a liquid comprising a first reactant to provide a plurality of reactive sites over the polymer substrate , wherein the first reactant comprises aluminum or boron ; and introducing a second reactant comprising silicon in a vapor form to said plurality of reactive sites that provide a catalytic growth of the film , wherein the growth of the film is self - limited in certain embodiments , the film can include silica , aluminum silicate , or borosilicate .

a leadthrough configuration has a metallic conductor embedded into a plastic wall . the plastics material and the conductor material have different coefficients of thermal expansion . the conductor is formed in such a way that , when there is a change in temperature , at least one portion remains in the leadthrough path , wherein oppositely directed sealing forces act on the conductor .

an electric heat sealer for sealing workpieces such as plastic bags or the like includes a casing defining a battery chamber , a press bar pivotally connected to the casing , a sealing mechanism supported on a compression spring in a spring holder inside the casing , and a safety device . the sealing mechanism is electrically connected to produce heat for sealing the workpiece being put thereon when the press bar pressed against the sealing mechanism . the safety device breaks the electrical circuit when the apparatus is not in use .

apparatuses , systems , and methods utilizing capillary action and to control the movement or placement of liquids or other materials in micro - devices and nano - devices . in some embodiments , the present invention may be used to control polymer addition to micro - cantilevers and nano - cantilevers for biological sensing , chemical sensing , and other sensing . in other embodiments , the present invention may be used to deliver adhesives , dielectrics , chemo resistor materials , and other materials to micro - devices and nano - devices .

a composition of matter comprising sophorolipids as antimicrobial agents , antifungal agents , biopesticides , for uses as drugs to treat hiv , septic shock , cancer , asthma , dermatological conditions , as spermicidal agents , as anti - inflammatory drugs , as ingredients in cosmetics and building blocks for monomers and polymers and self - assembled templates for further chemical elaboration .

a method and apparatus for fine grinding materials normally difficult to grind at ambient temperature , e . g . plastic and elastomeric materials in a fluid classification type impact mill utilizing liquid cryogen to pre - cool the material to be ground , to cool the material and the mill during grinding and to recycle vaporized cryogen from the mill back into the mill as the medium for conveying material to be ground into the mill .

a cellular reservoir flexible pressure vessel is formed as a series of closely packed tubes fitted into a pair of opposing end caps . the end caps have individual receptacles sized and shaped to receive the tube ends that are secured with adhesive or radio frequency welding . at least one end cap has a passageway for connection of the vessel . the vessel may be formed in a variety of useful shapes and the tubes may have various internal and external cross - sections . the end caps may be filled with sintactic foam with canals leading to the passageway . microtubes through the syntactic foam may connect the tubes to the passageway . the vessel is further strengthened by overwrapping with high - strength braiding material , hoop winding or by overlayment with high - strength fabric . the vessel is further strengthened by coating with plastic resin . apparatus and methods for forming the cellular reservoir flexible vessels are described .

the condensation product of oxalyl dihydrazide and 3 , 5 - di - tertiary - butyl - 4 - hydroxy aryl carbonyl compounds is found to stabilize polyethylene against oxidative degradation . stabilizer effectiveness is retained with the polymer in contact with copper . stabilized polymers are effectively utilized as wire insulation .

a polymer that contains an antimicrobial , bioresistant and fungal resistant moiety that is linked into the backbone of the polymer . the moiety is a bromine atom and a nitro group linked to one or more of the carbon atoms forming the backbone . the moiety can appear in the polymer chain in various levels of occurence from 5 ppm to has high as 100 % with a normal occurance of between 1000 ppm to 20 , 000 ppm . polymer types that can be created with this moiety to display these properties include , but are not limited to , polyurethane , polyurea , polyamide , polyester , polycarbonate , polyether , polysiloxane , epoxy , polyacrylic , polyacrylate , polyvinyl .

a fastener system includes a toy product , a support platform , and a plug that engages a keyhole formed into the product . the plug includes a base and a pronged key extending from the base . the support platform includes a through - hole that permits the passage of the key into the packaging . one or more integrally - formed biasing members are located on the base of the plug to draw the key toward the product and create a secure connection . the pronged key may be formed from a plastic material and configured such that it plastically deforms but remains attached to the key when and predetermined force is applied to the key to pull the key from a misaligned position with respect to the key hole .

the instant invention involves the use of a combination of preparatory steps in conjunction with mass spectroscopy and time - of - flight detection procedures to maximize the diversity of biopolymers which are verifiable within a particular sample . the cohort of biopolymers verified within such a sample is then viewed with reference to their ability to evidence at least one particular disease state ; thereby enabling a diagnostician to gain the ability to characterize either the presence or absence of said at least one disease state relative to recognition of the presence and / or the absence of said biopolymer , predict disease risk assessment , and develop therapeutic avenues against said disease .

a method of preparing a microarray of polymer elements . the method includes providing a substrate surface , providing a plurality of individual monomers in a liquid phase , depositing said monomers as a plurality of discrete monomer elements on the substrate surface , and exposing the plurality of discrete monomer elements to initiating conditions to form polymer elements . a portion of the discrete monomer elements may include more than one type of monomer .

an antianginal composition in the form of a plate is provided for treating ischemic heart disease and is comprised of a biologically soluble and resolvable film and an antianginal coronary vasodilating nitrate . this film is placed buccally on the gum or mouth mucosa for rapid arresting or prevention of angina pectoris attacks . the antianginal film is in the form of a plate , 0 . 1 to 1 . 5 mm thick , consisting of a biologically soluble and resolvable carrier . preferably , the film is comprised of a homoploymer of acrylamide or vinylpyrrolidone , or a copolymer thereof with acrylate , containing from 99 to 70 percent by weight of acrylamide with vinylpyrrolidone and from 1 to 30 percent by weight of acrylate having a molecular mass from 50 , 000 to 1 , 000 , 000 , and the active principle having antianginal action , the components being taken in the following proportions , in percent by weight : ______________________________________ active substance having 3 . 0 - 30 . 0antianginal actionbiologically soluble and 70 . 0 - 97 . 0resolvable carrier______________________________________

an apparatus for measuring the thickness of a tubular plastic layer during the process of its fabrication , which includes an ultrasonic transducer which generates a signal dependent on the thickness of the shape being measured while the shape is at a non - uniform condition of temperature , and circuitry for generating at least one signal from known process parameters , and an arithmetic unit for processing the signals derived as described above to generate an error signal which compensates for the influence of temperature on the test .

the present invention generally relates to a bubble package which allows a product to be displayed independently standing alone or hanging from a bracket / shelf , and also provides the ability to separate the paper and plastic portions of the package into at least two separate environmentally recycled portions . the paper based portion of the package operates as a display card and / or as a stiffener . the sides of the one or more display cards are bonded to one another to enclose the product within the plastic and prevent tampering with the product . the plastic portion , in addition to containing and displaying the product therein , optionally incorporates a base near the bottom of the package . the base protrudes from the bottom of the package and secures back onto the plastic portion via a securing mechanism . this arrangement allows the package to stand independent . optionally , a corrugated plastic insert can be used to provide additional support to the unit . in a typical arrangement , the plastic portions and paper portions avoid being bonded or directly adhered to one another , allowing the card to be entirely separable and allowing for complete environmental recyclability .

a bottle of molded plastic material which has a square main portion and a lower extension portion . the lower portion has corners of special configuration that cooperate with corner structures of a carrying crate or rack whereby the bottle is protected against injury .

films are formed from liquid polymeric material passed through an elongate exit slit of a die and drawn to a solidification region . a condition of flow of liquid through the slit is established to enforce a controlled ratio of extensional strain rate to shear strain rate on the material leaving the slit by providing a predetermined slit profile to maintain that ratio above a minimum throughout the width of the film .

an apparatus and methods for mixing and injecting a foam core within an extruded shell preferably of plastic downstream from an extrusion die to produce a uniform building product . the preferred apparatus includes a mixing head injector for mixing a binary system foam . the mixing head injector incorporates pressurized gas injection for homogenization of the foam core . a preferred method employs the mixing head injector and a novel calibrator thereby allowing injection of a foam core within the shell as it passes through a calibrator to reliably produce a uniform building product . an alternative method employs a second extruder . alternative methods employ a mounting fixture downstream of a first calibrator .

fibroblast cells are treated with a chemical inhibitor of protein kinase c such as staurosporine , in conjunction with functionally hypoxic micromass culture so as to be induced into chondrogenic differentiation . such fibroblast - derived , chondrocyte - like cells may be seeded onto three - dimensional polymer scaffolds for use in the repair of articular cartilage lesions , and thus can obviate the need for invasive techniques to harvest autologous chondrocytes from a limited supply of existing articular cartilage , or to avoid the need for obtaining allogeneic chondrocytes from non - biocompatible donor tissues .

hydrophilic composite polymer articles are provided which comprise at least one hydrophilic polymer in a powder form and one or more liquid components of which at least one is hydrophilic and which can be polymerized with said hydrophilic polymer . this composition is produced from a homogeneously mixed paste which can be molded or cast into a desired shape which will subsequently set . the resulting article has a shape - retaining , non - tacky flexible consistency which allows the shape to be further modified , if necessary . such object can be then cured by any of the conventional curing methods to retain its shape permanently . the final properties of the composite can be tailored to suit the final application by using fillers or modifiers . in the medical field , such articles can be utilized as a sustained release devices as they can be loaded with the desired therapeutic drugs . these articles can be made non - toxic and biocompatible and used as prosthetic devices . the final cured article can be modified further by polishing , drilling , cutting , etc . when exposed to moisture or a humid environment , the article will become partially hydrated with a resultant softer surface yet retain good mechanical strength .

the present invention relates to hydrophobic , or water resistant or water repellant , polymers and especially to hydrophobic , or water resistant or water repellant , biodegradable polymers . preferred polymers according to the present invention are polymers based on polylactic acid , polyvinyl , starch , polyacrylic acid , polyester and polymers based on combinations thereof . further , the present invention relates to novel additives and techniques to provide polymers , and especially biodegradable polymers , with improved hydrophobic , water - repellent or water resistant properties .

the present disclosure relates to nucleic acid molecules comprising the genome of the citrus sudden death virus , the causative agent of citrus sudden death disease . the cloned csdv nucleic acid molecules can be used as probes or can be used to design oligonucleotide primers useful in assays , such as a polymerase chain reaction , for detecting the presence of csdv in biological samples , particularly leaves , roots and other tissues or organs of plants , such as plants from the genera citrus and poncirus . the disclosure also comprises the nucleic csdv nucleic acid molecules , in whole or part , as well as transgenic plants , such as monocots and dicots , containing the csdv nucleic acid molecules , in any kind of combination , so that expression increases resistance to csd disease .

a method preventing biological damage to construction materials by treatment with a composition comprising a silicone polymer , a hydrocarbon solvent and optionally an essential oil is provided . a protective effect by reducing the moisture absorption of cellulose materials to below 20 % by contacting the material with a silicone polymer to reduce the hygroscopic nature of the wood is also provided .

a family of carboxylic acid groups containing fluorene / fluorenon copolymers is disclosed as binders of silicon particles in the fabrication of negative electrodes for use with lithium ion batteries . triethyleneoxide side chains provide improved adhesion to materials such as , graphite , silicon , silicon alloy , tin , tin alloy . these binders enable the use of silicon as an electrode material as they significantly improve the cycle - ability of silicon by preventing electrode degradation over time . in particular , these polymers , which become conductive on first charge , bind to the silicon particles of the electrode , are flexible so as to better accommodate the expansion and contraction of the electrode during charge / discharge , and being conductive promote the flow battery current .

the present invention provides a conducting polymer , a synthesis method thereof , and an electroactive electrode covered with the said conducting polymer . the conducting polymer is synthesized as follows : use the polybasic acid as dopant and crosslinking agent , and polymerize monomers into conducting polymer hydrogel . the monomers are selected one or more from pyrrole or its derivatives , thiophene or its derivatives , aniline or its derivatives . the acid group of the polybasic acid contains phosphate or polybasic acid which contains at least two substituents per molecule selected from sulfate , nitrate or carboxylic in which the molecular weight of at least one acid group is no more than 800 . the mole ratio of the acid group in polybasic acid to monomers of the conducting polymer is 1 : 12 - 12 : 1 . the preparation applied in the invention is simple , and need not to import any impurity . the conducting polymer hydrogel has high ionic conductivity , super hydrophilicity , and good biocompatibility .

a process for recovering suitable polyester feedstock material from recycled polyester includes the steps of depolymerizing the polyester into its component ester monomers and half - esters ; separating the monomers and half - esters from other secondary materials ; and mixing the component ester monomers and half - esters with additional monomers to produce a low molecular weight polyester . in a preferred embodiment of the invention the recycled polyester is contacted with a component monomer or oligomer thereof to liquefy the polyester before the polyester is depolymerized . the invention further provides an apparatus for carrying out the process . the apparatus includes a first reactor for depolymerizing the recycled polyester , a separator for separating ester monomeric components and half - esters from secondary materials produced in the first reactor , and a second reactor for producing a low molecular weight polyester from the liquefied separator products .

the developed oligonucleotide microchip for simultaneous , rapid identification of multiple crucial forest phellinus pathogens was based on the dig or biotin - labeled specific probes derived form ribosomal dna genes , by using reverse - dot hybridization . the chip can precisely and accurately identify and diagnose seventeen phellinus species , including notorious hardwood and conifer tree killer , p . noxius and p . weirii , with a sensitivity of 1 pg dna / μl on nylon membrane , and 100 fg dna / μl on plastic chip , respectively . verification and identification of forest phellinus pathogens infested authentic samples or voucher specimens can be accomplished within 7 hr .

a limited class of compounds is disclosed for use in low dosage to inhibit the growth of or to kill fungi , gram - positive , and especially gram - negative bacteria . these compounds are members of a family in which the trichloromethylthio group is appended to a nitrogen atom forming part of a ring structure . while a number of the compounds of this general family have some effect against other microorganisms , such as staphylococcus aureus , aspergillus niger , streptoverticillium reticuli , only a few of the compounds in this general family have been found to have an effect against gram - negative bacteria as well . this unique property makes the present compounds especially useful as bacteriostatic and bactericidal agents to be incorporated in resinous materials , such as polymeric resinous materials , whether contained in bulk , film , or liquid solution or dispersion .

a laminate material having nonslip characteristics on one surface and a smooth surface on the other side is provided . the material is created by laminating together a smooth film and a plastic foam surrounding a scrim having nonslip characteristics .

apparatus and method for processing regulated medical waste using a processing oven having multiple temperature ranges and compacting means and an oven with means for sensing and generating heat near the base of the medical waste container . temperature - calibrated thermoplastic engineered to liquefy at temperatures assuring sterilization of biological contaminants within the time frame of liquefaction and re - solidification is formed into a waste - receiving hopper capable of withstanding waste compaction pressures prior to liquefaction and compaction states are performed both before and after liquefaction . self - lidding thermoplastic containers utilize the mass of thermoplastic covers , or other forces , to consolidate the mass . a laminate is applied to the container to control plastic flow during liquefaction .

an agricultural irrigation assembly includes a water supply header and a plurality of drip tapes fluidly coupled with the supply header . each drip tape consists essentially of a biodegradable plastic material . a catalyst dispenser is in fluid communication with the supply header . the catalyst dispenser contains a catalyst for initiating fast degradation of the biodegradable plastic material .

a laminate to extend the life of photographs and prevent them from gradual deterioration due to environmental conditions comprises a laminate made of a transparent film of ultraviolet - stabilized polyethylene terephthalate or ultraviolet - stabilized acrylonitrile and a transparent silicone or acrylic adhesive bonded to the film , the laminate being adapted to be bonded to the image surface of a photograph by the adhesive . alternatively , to provide even greater protection against moisture vapor and oxidation , an additional layer of a transparent fluorocarbon polymer may be bonded to the ultraviolet - stabilized polyethylene terephthalate or ultraviolet - stabilized acrylonitrile with a silicone or acrylic adhesive . alternately , to provide a better aesthetic appearance by means of thermal texturization , an ultraviolet - absorbing polymethylmethacrylate film may be bonded to the ultraviolet - stabilized polyethylene terephthalate or ultraviolet - stabilized acrylonitrile with a silicone or acrylic adhesive . any of these combinations is effective to protect photographs over a long period of time from elements which cause fading and degradation , such as ultraviolet radiation , cycling relative humidity , atmospheric pollution and oxidation .

a plastic tee fitting formed by a main conduit body and an internally threaded adapter connected to the body at a right angle . the adapter is arranged end to end with a hollow neck which projects from the wall of the main body around a circular opening in the wall . the joint between the neck and adapter is strenghtened by an insert which is fitted in and glued to the neck and adapter on the inside and by a spout which is sleeved around and glued to the neck and adapter on the outside .

a method and composition for the method for preventing insect infestation that comprises applying to the area to be protected an effective amount of solid material coated with by treatment with a composition comprising a silicone polymer , and an essential oil . a protective effect by reducing the population of harmful biological pests in the locality to be protected is provided .

a chromatography solid support which is prepared by immersing a microporous inorganic substrate in a radiation - polymerizable monomer and subjecting said monomer to high energy radiation to produce a radiation - induced polymerization of the polymerizable monomer is disclosed .

a concrete mixer having a mixing drum constructed of high density crosslink polyethylene material . the drum includes a bottom supported by a conventional rigid metal pan secured to the external surface thereof to rigidify the plastic drum and extend the life expectancy of the plastic drum by enabling the concrete mixer to be used to complete a mixing job at a job site even though movement of the concrete mix within the drum during repetitive mixing cycles may ultimately wear a hole through the bottom of the plastic drum . paddle assemblies are positioned interiorly of the drum and oriented to maintain minimum splashing during the mixing operation . a rigid ring gear is attached peripherally of the drum in spaced relation to the metal supporting pan with the drum , ring gear and metal bottom pan being uniquely related to facilitate assembly and disassembly of the components to facilitate easy replacement of the components .

a collapsible , reusable , general purpose shipping box is made from an inexpensive polymer composition , and can be mass produced by extrusion or coextrusion . the boxes are extruded or coextruded in an almost wasteless production as endless webs of inner layouts and outer layouts , which are folded into respective configurations with one of the configurations being outer one and another inner one . the enclosure is assembled by inserting the inner configuration into the outer one and snap - connecting the complementary male - female locking elements already extruded into the layouts . an extruded web may be many layouts wide as a given extruder and die allow . the boxes can be easily assembled from substantially flat and rectangular layouts at the point of packaging , either by hand or by using a slightly modified and currently widely used box erection machine , and as easily disassembled for transportation and cleansing at the point of unloading .

polymeric materials are recycled by transformation to useful chemicals by oxidization in the liquid phase using acetic acid as a solvent and a metal bromide catalyst .

this invention comprises a multiplex - capable oligonucleotide which is capable of hybridizing to at least one of the c . difficile tcdb , tcdc , or cdtb genes , wherein , wherein said primer consists of a sequence selected from the group consisting of seq id nos : 1 through 9 , or a sequence that exhibits no more than one substitution of a base to a sequence selected from the group consisting of seq id nos : 1 through 9 and method for polymerase chain reaction determining of the presence of a toxigenic strain of c . difficile in a biological sample utilizing said probes .

a banding apparatus and method . one embodiment is a unitary or integrated hemorrhoidal single hand - held and single hand - operated ligator , which can , in some embodiments , enable direct visualization and release of multiple bands . the ligator has a gun - shaped handle extending from a vacuum generating trigger tube , with a fixed band bearing barrel extending from the vacuum generating trigger tube . a vacuum generating tube extends through the band bearing barrel from the rear of the gun ligator to the band bearing barrel end of the ligator gun , and is in air movement communication with the vacuum generating tube and band bearing barrel end of the ligator gun . a band actuating barrel is threadably mounted to surround a portion of the band bearing barrel , and rotation of the barrel cause the barrel to move laterally and force one or more ligating bands along and off of the band bearing barrel end . a light source can be included to illuminate the band bearing barrel end . most components are made of nearly transparent . durable , lightweight , recyclable plastic , such as polypropylene ; and with such components the operator can see through the gun components and observe the material , such as a hemorrhoid , to be ligated .

the shape memory polymers disclosed are a reaction product of at least one reagent containing two active amino - hydrogen or two active phenolic - hydrogen with at least one multifunctional cross linking reagent which contains at least three or more active amino - or phenolic - hydrogen or is a reagent containing at least three glycidyl ether moieties which is then further mixed with at least one diglycidyl ether reagent whereupon the resulting mixture is cured and has a glass transition temperature higher than 00 c . this reaction creates crosslinking between the monomers and polymers such that during polymerization they form a crosslinked thermoset network .

compositions containing either poly or copolymers of ε - caprolactone with other lactones , together with a drug , when subdermally implanted in the body , provide a slow sustained release of the drug . the polymers may be designed to biodegrade during or subsequent to the depletion of the drug .

suture - specific coatings having a number average molecular weight not exceeding 20 kda , a melting temperature above 37 ° c ., and heat of fusion exceeding 20 j / g , are formed of copolyesters of polycaprolactone or of ε - caprolactone and at least one cyclic monomer forming a segmented polyester chain initiated by a polyaxial crystalline organic compound or an amorphous polyaxial polymeric initiator and include from about 0 . 01 to about 10 weight percent of at least one molecularly dispersed bioactive agent .

disclosed is nanocoupling of a polymer onto a surface of a metal substrate for improving coating adhesion of the polymer on the metal substrate , and in vivo stability and durability of the polymer . in accordance with the present invention , the polymers can be grafted via a chemical bonding on the surface of the metal substrate by the nanocoupling , by which adhesion , biocompatibility and durability of a polymer - coated layer which is to be formed later on the metal substrate were remarkably improved ; therefore , the nanocoupling according to the present invention can be applied to surface modification of a metal implant , such as stents , mechanical valves , and an articular , a spinal , a dental and an orthopedic implants .

the invention discloses ph - controlling devices that comprise a biodegradable polymer and a ph - controlling substance , particularly an alkaline , acidic or buffering agents . by way of example , such alkaline agents include calcium carbonate and sodium bicarbonate . methods of preparing such devices are also described . methods for enhancing biocompatibility of an implantable device are also provided , as neutralizing alkaline materials are released at a rate that offsets changes in ph typically observed as polymers degrade to various acidic or alkaline by - products . by way of example , biodegradable polymers include pla , pga , polycaprolactone , copolymers thereof , or mixtures thereof . a new technique is disclosed to increase the surface porosity of porous implants which have a tendency to form relatively impermeable coverings . this technique entails the use of mechanical means to remove at least part of said covering , thus increasing the implant &# 39 ; s surface porosity and permeability .

method for treating a plastic part , which comprises a surface , comprising the steps : a ) irradiating at least a part of the surface with a treatment radiation to obtain a modified surface area , the modified surface area being capable of absorbing a heating radiation to an extent greater than the unmodified surface area , and b ) irradiating the modified surface area with the heating radiation at least in a section so that the plastic part is heated and softened in a region defined by the irradiated section of the modified surface area .

the invention is directed to providing a compound for treating cancer , the compound comprising a metal complex having predetermined characteristics , and which may be incorporated into a polymeric nanoparticle or other delivery system for delivering the metal complex for action on tumor cells . the metal complex for treating cancer wherein the metal complex is a silver salt , a silver macrocyclic metal complex , a silver n - heterocyclic carbene or mixtures thereof . the invention is also directed to a silver macrocyclic metal complex and a silver n - heterocyclic carbine , and methods of treating cancerous cells in a mammal including the steps of administering an effective amount of a silver metal salt , such as by incorporating the material into a biodegradable polymeric nanoparticle .

preforms with a neck region and a preform body and having an enlarged geometry in comparison with the cavity of the injection mould are produced by injecting a polymer melt into the mould with a geometry of the cavity in the mould such that the radial extent of an inner space in the preform body thereby produced is not greater than the radial extent of the inner space in the neck region , the preforms are removed from the open mould by a removal gripper , and the preforms in the removal gripper are inflated using positive pressure such that the geometry of the inflated preform body is larger than the cavity in the injection mould .

in an image card where an image is formed on a thin plate made of special synthetic paper or plastic by engraving by sweeping the plate with the engraving needle through relative movement of an engraving needle and a plate , it is impossible to form a hidden image which can be viewed when a viewpoint is changed or form an image formed by watermark engraving and the hidden image within the same plane . a hidden image is formed on an image card by engraving while angles of stripes of striped patterns are changed in response to shading of an image . further , an image engraving device is provided with a rotary driving unit , and engraving is performed in a state that an extending direction of striped grooves of the hidden image and a forming direction of the engraving are made equal , so that a wall face of a groove is always formed by the same side face of an engraving needle and undulation does not occur on the wall face of the groove . similarly , a shape of a bottom face of the groove is made even . as a result , precision of the hidden image is made high and an effect as the hidden image is further improved .

described herein is a seismic streamer formed of sections including a main sheath covered with an external sheath , wherein said external sheath is formed using a thermoplastic material loaded with a biocide material .

a biopsy instrument includes a canula slidingly disposed in a finger tube having a finger at its distal end . by forward displacement of the finger tube relative to the canula the finger is inserted into an opening in the canula wall near its cutting front edge . thereby a piece of tissue located inside the canula is severed from living tissue . the instrument has a steel spring compressed against a force of at least 35 n for displacing the canula and the finger tube in the tissue cutting step . the stopper on which the moving canula impacts includes an element of an impact damping design . the impact damping element is made of high - impact grade abs - polymer or a polymer with similar physical properties . it can be used also with known biopsy instruments having a moving canula and / or stylet driven by a powerful spring . also described is a loading assembly for a biopsy apparatus incorporating the biopsy instrument .

a method and apparatus for forming a thermoplastic resin vessel including a bottom plate and at least two side plates is provided . the bottom plate or portion is applied to the surface of an inner mold by advancing a bottom mold carrying the bottom plate . the side plates or portions are formed along a concave surface of side molds and is then positioned around the inner mold to completely surround the inner mold to form a tube which holds the bottom plate therein . the outer mold is then removed and the vessel formed by the tube and bottom plate is then removed from the inner mold .

an expandable media filter structure is composed largely of biodegradable materials and is environmentally disposable . a plurality of pleated panels are interconnected at their edges so as to be collapsible for storage and shipping purposes but expandable for installation and use . a plurality of ribbons are ultrasonically welded to each of the panel edges , with the ribbon portions between edges being of substantially equal lengths , thereby maintaining equal spacing between the panel edges when the filter is in the expanded condition but allowing an easy collapsing of the filter for storage . forming a part of the disposable filter are pair of end plates , with each being adhesively attached to an end panel and having a pair of slots formed near their ends for attachment to a nondisposable support structure . the end panels are formed of multiple layers of paperboard which are adhesively bonded and compressed into a u - shaped structure that rigidly supports the filter in its expanded condition . the nondisposable support structure comprises a pair of molded plastic side caps that fit over the respective ends of the filter panels and the end plates . each side cap has a pair of flanges at its opposite ends which act to maintain the filter in its expanded condition when the end plates are placed in abutting position therewith . each side cap also includes a boss which fits into a respective end plate slot to hold the end plates in their installed positions within the side caps .

devices and methods employing interdigitated dielectrostrictive sensors are disclosed for measuring shear stress , and obtaining strain - dielectric and stress - dielectric coefficients to monitor a process , and examine quality of dielectric materials , including but not limited to polymer , composite , grease , food , biofluids and etc . the dielectrostrictive sensor includes at least two interdigitated sensors , each having at least two electrodes and a central axis . the central axes are disposed in a common plane and are oriented at different directions .

a multilayer film includes a core layer and opposed skin layers . the core layer comprises reclaimed material from the group consisting of a stream of post converted plastic product including inks , with or without an adhesive therein , and a stream of multi - colored plastic bottle caps including multiple polymers therein . at least one of said opposed skin layers being sufficiently opaque to mask any undesired coloration created by the reclaimed material . laminations employing the above multilayer film also form part of this invention . a method of this invention for making a multilayer film including a core layer with recycled plastic therein includes the steps of : separating a plastic film or label from a package of commercial product ; pelletizing the plastic film or label into pellets for introduction into an extruder of a film forming device and introducing the pelletized plastic film or label into said extruder for introducing the recycled plastic film or label pellets into a core layer of a multilayer film .

a bioabsorbable synthetic polymer is exposed to a gas plasma in a chamber at a pressure substantially below atmospheric for a sufficient time to increase the hydrophobicity and / or cross - linking density of a surface layer thereof and thereby modify the rate at which the polymer will hydrolyze . an accordingly modified polymer is useful for surgical implants and wound closures .

a method of fluxing a solder or a metal substrate uses a fluxing composition that comprises a fluxing agent , in which the fluxing agent is a benzotriazole or a benzotriazole adduct . the adduct contains a benzotriazole segment and a segment with a curable and polymerizable functionality .

biodegradable anionic polymers are disclosed which include recurring polymeric subunits preferably made up of dicarboxylic monomers such as maleic anhydride , itaconic anhydride or citraconic anhydride . free radical polymerization is used in the synthesis of the polymers . the polymers may be complexed with ions and / or mixed with fertilizers or seeds to yield agriculturally useful compositions . the preferred products of the invention may be applied foliarly or to the earth adjacent growing plants in order to enhance nutrient uptake by the plants .

biomimetic artificial prostheses which are made from polyester , such as polyethylene terephthalate , and a method for the biomimetic functionalization of such prostheses . the method includes a step involving the grafting of biologically - active polymers or copolymers to the polyester surface of the prostheses , the grafting step consisting of the peroxidation of the surface by ozonation followed by a step including the radical polymerization of a solution of at least one monomer . the method also includes an optional step consisting in impregnating the prostheses with type i and / or ii collagen and / or fibronectins . the prostheses thus obtained enable a normal and uniform regrowth of the fibroblasts , thereby significantly improving the biological integration of such polyester prostheses .

known apparatuses to inject liquids , in particular plastics into injection moulds have closure rods which remain in the gating when the closure system is opened . in the present apparatus the liquid passage always is completely free when the closure system is opened , because the closure rod can be totally retracted from the liquid passage . this can be accomplished in two ways : either the liquid passage extends in a bended manner or the closure rod has a side view in the configuration of a sector or a circle .

the present invention relates to a novel aquarium bottom surface substrate consisting of a biocompatible polymeric material with a granular aquarium substrate embedded into the polymer . in an embodiment of the invention there is also a means for attaching aquarium decorations to the aquarium bottom surface substrate to keep them firmly in position during use of the aquarium .

according to some embodiments , the present invention provides compositions and methods for making and using multifunctional polymerized liposomes finding relevant application in medical sciences , particularly in bioimaging , diagnostics , drug delivery , and drug formulation . the compositions and methods involve lipids that are both polymerizable and have a “ clickable ” group that provides the ability to functionalize via a click reaction with various functional moieties useful for the above - listed applications .

a plastic device containing an effective amount of an antibiotic to minimize bacterial and / or fungal infection at the site of implantation is disclosed .

the purposes of the present invention are to provide highly impact - resistant thermoplastic polyester resin inexpensively and promote the recycling of pet bottles , which are dumped as waste . to attain the purposes , a carboxyl - modified metallocene catalyzed polyolefin elastomer or a glycidyl methacrylate adduct to the elastomer is melt - blended with a thermoplastic polyester resin , particularly , the powder of recycled pet bottles . additionally , a filler can be mixed , if necessary .

a first instruction is provided to add the contents of a container to the reservoir bowl portion of a tree stand , where the material includes an amount of a superabsorbent polymer . a second instruction is provided to add ice . in one example , an assembly includes a container , where the sap is in the container , and where the container bears the instructions . this assembly is provided to the user . the user follows the instructions , and pours the contents into the reservoir bowl , and then adds ice to the reservoir bowl . the melting ice hydrates the sap . the hydrated sap then transfers moisture to a cut tree held by the stand . water is replenished by adding more ice . no water must be poured or handled to hydrate the tree , so spilling and difficulties associated with pouring volumes of water into the bowl portion are avoided . the sap is reusable and biodegradable .

the present invention is related to a multi - layered thermoplastic elastomer foam . due to a specific formulation of the multi - layered tpe foam , adjacent layers of said tpe foam can be perfectly adhered to each other without adhesive or thermocompression after foaming . the present invention is also related to a specific process for forming a multi - layered foam .

a no - clean low residue solder paste is described for die - attach dispensing or fine pitch printing of semiconductor devices . the solder paste has a homogeneous consistency with no tendency to paste separation . the ultimately remaining residue is clear and crystal like and is compatible with further processing steps without prior cleaning with a solvent to remove flux residue . the solder paste comprises a relatively low amount of rosin in combination with a viscous solvent system , thixotropic agents , activators , additives and optionally plasticizers .

the invention is directed to a bi - directional check ring for a two - stage injection unit . more specifically , a close fitting ring is inserted behind the plunger head of the melt accumulator so that normal running clearances between the plunger and barrel bore can be used . the outer diameter of this check ring has a very close fit with the inner diameter the injection barrel , but is not rigidly connected to the plunger . accordingly , the plunger is free to “ floats ” while injection and plastication / filling take place . the open volume between the ring and plunger is small , but sufficient to permit the ring to “ float ” very close to the barrel inner diameter , without being influenced by the alignment of the plunger and injection drive motor .