bluuebunny/crossref_metadata_2025 huggingface dataset:
Study on Flexural Resistance of Corroded Reinforced Concrete Walls
Authors: Zhao Shun Bo , Qu Fu Lai , Zhang Shi Min , Li Chang Ming , Hou Peng Bing
Published: August 2013

On the requirement of evaluating the bearing capacity of corroded reinforced concrete lock-walls servicing on the Yellow River, the experimental study was conducted to investigate the loading behaviours of normal section of lock-walls, which considered the changes of concrete strength and corrosion level of rebar. The rebar corrosion was accelerated by the mixing of sodium chloride (NaCl) into concrete and the electrolyte corrosion technique in condition of dry-wet curing. The vertical eccentric load was applied on the top of the wall. The results show that some horizontal cracks firstly appeared on the surface of walls during the corrosion period and became wider under the vertical load on the wall. The typical ultimate state was flexural failure. The effects of concrete strength and rebar corrosion level on the resistance of normal section are analyzed based on the test data.
Effect of Fibers Content on the Tensile Properties of Coconut Fibers Reinforced Cement Mortar Composites
Authors: Lumingkewas Riana H. , Ausias Gilles , Lecompte Thibaut , Perrot Arnaud , Katili Irwan , Purnomo Heru , Hadiwardoyo Sigit P.
Published: August 2013

The coconut fiber presents higher ductile properties than other natural fibers. In previous studies, it demonstrated than Indonesian coconut fibers presents an improved tensile strength and failure strain after washed with water and dried. The coconut fibers have the potential to reinforce material for construction, especially in earthquake areas such as tropical countries. The purpose of this research is to assess the benefit brought by coconut fibers content on the tensile behavior of mortar composite. Splitting tensile strengths were measured and microstructure observed using scanning electron microscopy (SEM). The influence of fiber content (expressed by a mass ratio fiber/cement) is investigated. The results show that a fiber content of 5% allows a 10 times higher deflection and presents a 1.5 times higher tensile strength than mortar without fiber. Further studies will focus on the bond strength between the fiber and the cement mortar matrix.
Experimental Modal Analysis of the Industrial Flat Sewing Machine Based on PolyMax Algorithm
Authors: Zhang Li , Bin Su , Tao Feng , Tian Ye , Peng Jiang Yue
Published: August 2013

In this paper, the free modal of the industrial flat sewing machine was researched, and the experimental measurement system is established. A modal analysis of industrial flat sewing machine is carried out through the method of single point exciting vibration and multipoint collecting signal. The PolyMax modal parameter identification method is applied to the modal analysis for frequency response function to get steady state diagram and then determine the modal parameters and modal shapes. According to Modal Assurance Criterion (MAC), the credibility of the calculation results is verified, and then modal parameters of industrial flat sewing machine get more reliable in order to provide the reference for further structure optimization and noise reduction of the flat sewing machine.
Modal Finite Element Analysis of Double Rollers Plastic Calender Equipment
Authors: Li Yan , Zhang Peng , Qin He Yong
Published: August 2013

This paper mainly targeted double roll calender equipment vibration problem of study, using numerical simulation method, investigated the rollers, stents and modal of the whole machine. Conclusion as follows: (1) for the rollers are concerned, turning to the rollers inherent frequency influence is small, can be ignored. (2) stents have not only the front and back, the or so direction of the bending vibration, and torsional vibration, these vibration will influence support the intensity and rigidity. (3) the whole machine is the main complex vibration mode, stents vibration performance for concurrently bending torsional vibration, with vibration frequency increases on the rollers showing torsional vibration.
Study on the Working Principle of a New Type of Power Transmission Mechanism for Gasoline Engine
Authors: Guan Xing Quan , Lu Qiu Ping , Liu Wei Dong
Published: August 2013

This paper presents a new heat-work device, which chooses the gear-rack mechanism to realize the reciprocating motion of cylinder, and that applies swing rod rotation to transmit thermal energy, it changes the use of traditional engine crank-link mechanism and improves the mechanical transmission efficiency effectively. Using incomplete gear mesh, the length of displacement can change in the exhaust stroke, so that the combustion exhaust gas can discharge more. The premix gas is completed ahead of schedule two stroke earlier than traditional gasoline engine in the auxiliary cylinder, and mixture gas burn more thoroughly. To combine swing rod with overrunning clutch install on the output straight shaft, it can replace the crankshaft for output power.
Optimization Design and Simulation Research of Hydraulic Test Bench
Authors: Meng Fan He , Zhang Jun Hua
Published: August 2013

For the limitations of the existing hydraulic test bench for experimenting with multi-species of hydraulic components, the additional cartridge valve circuit and multi-way directional valve circuit were designed. The AMESim simulation models of the hydraulic test benchs basic hydraulic circuits were established and simulated. Then the simulation results were compared with the experimental data to get some principles of simulation modeling and optimize the models. These principles were used to simulate the additional hydraulic circuits. Through analysis of the simulation results, theory supports were provided to the optimal design of hydraulic test bench. In this way, the existing hydraulic test bench can be fully used and the suitable components were selected, reducing the waste of resources. Besides, the simulation models can be used as part of the virtual hydraulic teaching.
Reasons of Great Mining Height Coal Side Fall and Study of Supports Preventing Technology
Authors: Wang Li Ping , Zhai Cai Ying , Huang Wei Min
Published: August 2013

In order to control the side fall of coal face in great mining height fully mechanized face,this paper proposes a way of controling side fall by ensuring supports setting force,accelerating development,supporting timely of the fully mechnized face and making good use of supports sprag units on the basis of side fall influence study and side fall principle analysis. This paper not only analyses factors influencing stability and explains kinds of sprag units phenomenon of coal face in working face but also conducts quantitative analysis on the influence and provides theoretical basis for measures in order to prevent coal side fall in working face.Meantime,those measures this paper provides are all effectively in controlling coal side fall in great mining height fully mechanized.
Research Development on Performance of Industrial Insulation Coating
Authors: Li Lin , Zang Ruo Yu , Li Yong Qi , Dai Jian Hua , Wang Xiang Yang
Published: August 2013

Ability to testify effect of carboxymethocel cellulose, use 5000-mesh hollowness particle, carboxymethocel cellulose and sodium silicate to study anti-fatigue nature of coating, examine performance of industrial test, apply metallurgy transmission method to build math model and check test results by comparison of theory value and test value. Carboxymethocel cellulose enhances adhesion performance between coating and steel plate, resolves key matter that coating tends to come off in test. Continuous heating-cooling tests displayed that insulation performance of coating doesnt reduce with reduplicative application, anti-fatigue test has no effect on insulation performance. Insulation coating can play a role in industrial production. After coating was applied in steel ladle, temperature drop of liquid steel notably decreased, energy consumption reduced accordingly in steelmaking, steel plant can obtain direct economic benefit. Thickness of coating is 0.8mm, test value approximates theory value for outer temperature of steel plate.
Analysis for Wedge Falling-Proof Brake Assembly of Lifter with Converter Oxygen Lance
Authors: Shi Jia Lian , Xu Chang Liang , Jiang Kui Bo
Published: August 2013

Designing wedge falling-proof brake assembly of the lifter to protect the converter oxygen lance and other equipments. This paper briefly introduces the design principle. Pro/Engineer-based parametric solid modeling for virtual assembly of the falling-proof brake assembly, and then motion simulation, the working process of the wedge falling-proof brake assembly demonstrated through the animation demonstration, so the simulation is accurate and clear; at the same time falling distance is derived from the rope broken to the lifter locked through mechanical analysis, and putting forward the measures to reduce falling distance of brake at last.
Structural and Magnetic Properties of CoFe2O4 / Si (001) Thin Films via Sol-Gel Method
Authors: Rao Wei , Li Ding Guo , Yan Hong Chun
Published: August 2013

Cobalt ferrite (CoFe2O4) thin films have been prepared on Si (001) substrates, with different calcined temperatures (Tcal=400°C~800°C). The films structure was studied by X-ray diffraction (XRD) and their surface was examined by scanning electron microscopy (SEM). The magnetic properties were measured with a vibrating sample magnetometer (VSM). For low calcined temperatures, the films presented a mixture of a CoFe2O4phase, with the cubic spinel structure, and cobalt and iron antiferromagnet oxides with CoO and FeO stoichiometries. As the calcined temperature increased, the CoO and FeO relative content strongly decreased, so that for Tcal=800°Cthe films were composed mainly by polycrystalline CoFe2O4. The magnetic hysteresis cycles measured in the films were horizontally shifted due to an exchange coupling field originated by the presence of the antiferromagnetic phases.
Research on Preparation of Nanocrystalline Titanium Oxide Film and its Super-Hydrophilic Property
Authors: Yang Zhi Yuan , Qu Shi Cun , Lu Xiao Na
Published: August 2013

Sol-Gel Coating was used to prepare nanocrystalline titanium oxide film, with which some metal ions were mixed up. In the end, XRD and SEM were used to analyze the composition and the property of the morphology, and then ultraviolet light was used to test the super-hydrophilic property. The results show that the photocatalytic property of the metal ion-doped films is stronger than that of the non-doped TiO2 films, but weaker than the metal ion-doped SiO2/TiO2 films. For the doping 0.05% TiO2 films, the Ce-doped titanium dioxide on the degradation of methyl orange is the slowest. After calcined at 500°C for 2 hours, rutile and anatase crystals are mixtured; Grain size of the films is in 42.5-85.7 nm.
Study on Structure and Performance Optimization for Spherical Stern Bearing Based on ANSYS
Authors: Chen Wei Jing , Liu Zheng Lin , Zhang Sheng Dong , Zhao Liang , Liu Peng
Published: August 2013

Spherical stern bearing is kind of new bearing, which combines ordinary water lubricated stern bearing with sphere bearing. It has function to adjust contact situation of stern bearing and stern shaft automatically, decreases pressure peak, leads to pressure distribution on the bearing being more uniform, helps to overcome the problem of local overload to avoid edge effect and improves damping performance. On the base of the ANSYS software, the contact deformation and pressure calculation of spherical stern bearing are carried out to compare with ordinary stern bearing and analyse the effectiveness of reducing pressure on bearing, optimization problems of the sphere position and sphere diameter are discussed, which shows that the contact pressure achieves a minimum when the sphere is located at intermediate position of bearing bush and the maximum contact pressure decreases with the increase of sphere diameter, and they have linear relation.
The Validation of Computational Software System for Creep Damage Analysis
Authors: Tan Feng , Xu Qiang , Lu Zhong Yu , Xu Dong Lai , Liu De Zheng
Published: August 2013

This paper reported a validation of computational software system for creep damage analysis using circular notched bar. The complete computational software system for creep damage analysis consists of pre-and post-processing and the numerical solver and here the validation is primarily for the pre-and post-processing section developed by the authors. The creep damage evolution with time was post-processed interactively via FEMSYS.
Improving Design of Household Self-Traction Treatment Bed
Authors: Pan Li Ai , Du Qiu Lei
Published: August 2013

With the development of social, economic, health is increasingly being emphasized by people and has become a topic that can not be ignored. However, having a healthy body also need been the right health care. So, efficient and safe products are more popular with consumers. In paper, a self-service-based and purely mechanical traction treatment bed has been designed. The various parts of the self-traction treatment bed is introduced in detail. The structural designs of its unique folding feature, adjustable bed, a fixed bracket, rotation driving handle, the bottom track sliding, etc., make up for the design of the traditional traction therapy instrument. This traction treatment bed breaks the traditional design style and does reflect the modernist design style in the man-machine combination.
A New Method of Building an Evaluation Model for User Interface
Authors: Jin Tao , Xue Cheng Qi , Wang Hai Yan , Niu Ya Feng
Published: August 2013

In the process of product development, the evaluation of User Interface (UI) plays a critical role, which greatly influences users' satisfaction. The paper presents a new method to build a User Interface Evaluation Model between Interface Quality and Appearance Variables (AVs) of UI based on user preference metric and improved Principal Component Regression, not only remaining all the effective original AVs but also overcoming the multicollinearity between them. Final tests show that the model built by the new methods can provide designers with a theoretical and practical basis for UI improvement to any given product easily.
Mechanism Configuration of Super-Redundant Robot
Authors: Chen Yan , Chen Wen Zhuo , Chen Ken , Shao Jun Yi , Zhang Wei Ming
Published: August 2013

Structural synthesis of super-redundant mechanism is a key to design of painting robot for S-shape duct. Based on the principles of modular structure design, the painting robot for S-shape duct falls naturally into three separate control and design components: a moving platform, a locating mechanism, and a painting manipulator. The moving platform consists of a robot body, wheels, gasbags for position adjustment, and screw jacks. The 3PR-type serial mechanism is adopted for location. The super-redundant 3P7R-type serial mechanism is used for the painting manipulator. The restriction of the distance between connecting rods and the axis of the duct is employed to control self-motion of the painting manipulator for joint trajectory planning. Experiment result shows that minimal distance between robot joints and duct interior is 18mm and that average dynamic accuracy is ±6.8mm, which satisfies the working requirements.
Synthesis and Characterization of SPEEK/Layered Double Hydroxide Polymer Nanocomposite for Fuel Cell Applications
Authors: Kim Da Yeong , Joo Eun Hye , Mishra Ananta Kumar , Kim Nam Hoon , Na Young Jun , Lee Joong Hee
Published: August 2013

The development of sulfonated poly (ether ether ketone)-based (SPEEK) membranes by the incorporation of layered double hydroxide (LDH) as inorganic nanofiller has been achieved and its potential application in proton exchange membrane fuel cells (PEMFCs) has been investigated. The physical properties and proton conductivity of SPEEK matrix incorporated layered double hydroxide (LDH) were analyzed and found that the incorporation of LDH to SPEEK improves the thermal stability, water uptake and proton conductivity compared to the virgin SPEEK. The proton conductivity of the SPEEK/LDH composite membrane containing 3 wt% LDH has been found to be 229.9 mS/cm where as the virgin SPEEK shows the proton conductivity value 147.6 ms/cm at 80 °C and 100 %RH.
Shaped Textile Reinforcement Elements for Concrete Components
Authors: Pidun Kevin , Gries Thomas
Published: August 2013

By now the application of Textile Reinforced Concrete (TRC) for facade constructions can be considered as state of the art. Especially ventilated curtain walls made of TRC and sandwich elements made in combination of TRC-layers and foam cores recently are realized in pilot projects which are predominantly located in Aachen, Germany. The Life funded Insu-Shell façade of the Institute fuer Textiltechnik (ITA) of RWTH Aachen University gives an example of such a pilot project. Furthermore, a pedestrian bridge has been built in Albstadt, Germany. The enormous potential of TRC-applications is shown in these practical projects. All projects have been completed successfully and present good results in terms of the surface quality, the design freedom, the wall thinness and the ecological performance. A networked process chain was aimed at and approached and finally implemented. Apart from this, all these projects incorporating impregnated textile reinforcements reveal unanswered questions regarding production of shaped reinforcement elements, their ability to bear loads and their durability. Particularly the transformation of a 2D-warp-knit fabric to a reinforcement element (textile reinforcement cage) is a challenge, which needs to be addressed further. Since the beginning of 2012 a new transfer project called Shaped textile reinforcement elements for concrete components (T08) within the framework of the Collaborative Research Center 532 `Textile Reinforced Concrete - Development of a new technology` is funded. That challenge is to be solved in the T08 project in cooperation with Institutes from the RWTH Aachen University and industry partners led by the Institute of Structural Concrete of RWTH Aachen University.
Determining the Co-Efficient of End Constraint of Stretch Formed Microtruss Materials
Authors: Venkatesh Balaji Devatha , Hibbard Glenn D.
Published: August 2013

Microtruss cellular metals are a class of multifunctional materials, composed of a regular arrangement of supporting struts. They can be fabricated by stretching perforated metal sheets out of plane by applying force at strut intersections. Once fabricated, external loads are resolved axially along the struts resulting in stretch dominated deformation, yielding enhanced weight specific strength and stiffness at lower densities compared to conventional metallic foams. Given the slenderness of the struts making up the microtruss architecture, failure often occurs by inelastic buckling and is therefore dependent on the rigidity of the strut end constraints. During column buckling the limiting conditions are pin jointed (k=1) and rigid jointed (k=2), with microtruss struts typically having end constraints intermediate to these boundaries. Experimental and finite element methods were used to determine the value of k in IN600 microtrusses. Because of the non-linear stress-strain behavior of the parent metal, the relative significance of end constraint uncertainty is a function of the strut slenderness ratios and the material in question.
Synthesis of High Quality Graphene Films by Atmospheric Pressure CVD and their Application in Laser Q-Switching
Authors: Qi Mei , Zhang Yu Ping , Li Wei Long , Jiang Man , Zheng Xin Liang , Bai Jin Tao , Ren Zhao Yu
Published: August 2013

Synthesis of high quality graphene films on Cu foil by atmospheric pressure chemical vapor deposition (APCVD) was studied systematically. Acetylene and Cu foil were chosen as the carbon source and the catalyst (or the support) for the synthesis of graphene, respectively. The effect of several synthesized parameters on the structure of graphene films were investigated in detail. The controlled synthesis of graphene and the optimal synthesis conditions were derived. The prepared graphene film was transferred to a coated mirror as a Q-switching saturable absorber used in a Nd:YAG laser. The obtained shortest laser pulse width with single-pulse energy of 8.18 μJ was 242.8 ns. The results indicate that graphene film synthesized by APCVD can be excellently used as saturable absorber material in ultrashort pulse laser.
Comparison of Coupling Effectiveness among Amino-, Chloro-, and Mercapto Silanes in Chloroprene Rubber
Authors: Siriwong Chomsri , Sea-Oui Pongdhorn , Sirisinha Chakrit
Published: August 2013

The present work focuses mainly on the uses of silane coupling agents in chloroprene rubber (CR) reinforced with precipitated silica (PSi). Grafting of organoalkoxysilane onto surfaces of PSi was conducted, and the characteristics of surface-modified PSi were determined by BET technique, light-scattering particle size analysis, DRIFT and 29Si NMR spectroscopy. The 3 types of silane coupling agents used in this work were as follows: 3-aminopropyl triethoxysilane (APTES), 3-chloropropyl triethoxysilane (CPTES) and bis (3-triethoxysilylpropyl) tetrasulfide (TESPT). Processability of compounds and mechanical properties of vulcanizates were then investigated, and compared for the effectiveness of silane coupling agents used in property enhancement. The results reveal that the silane type affects not only the compound processability, but also the vulcanizate mechanical properties. Among 3 silanes, the CPTES and TESPT are capable of reducing the filler-filler interaction to greater extent than the APTES, leading to superior compound processability. Moreover, the amino and mercapto groups of APTES and TESPT, respectively, significantly enhance the mechanical properties of CR vulcanizate more effectively than the chloro groups of CPTES. This might be ascribed to the combined effects of enhanced rubber-filler interaction and improved filler dispersion.
Intermetallic Electrode Structure Produced by Thermal Spraying of Water-Atomized Cu-Sn Powders
Authors: Intrakrathuk Nithi , Uthaisangsuk Vitoon , Yotkeaw Thanyaporn , Tosangthum Nattaya , Vettayanugul Bhanu , Tongsri Ruangdaj
Published: August 2013

ntermetallic copper-tin compound (Cu6Sn5), acting as a negative electrode, is able to be intercalated and deintercalated by lithium ions during charging and discharging of a rechargeable lithium ion battery made of this intermetallic. Single Cu6Sn5 phase powders were successfully prepared by water-atomization of Cu-Sn alloys with subsequent heat treatment of the water-atomized powders. Although forming of the Cu6Sn5 intermetallic powders into applicable electrode structures can be produced by using some binders to hold the Cu6Sn5 powder particles to form a desired shape, the binder formulations are complicated and unrevealed. In our approach, we employed a thermal spraying technique to form a porous Cu6Sn5 intermetallic layer on a Cu plate. The porous Cu6Sn5 intermetallic layer was aimed to perform Li insertion and reversible extraction functions and the Cu plate to perform electron collector and supplier functions. It was found that the thermal spraying technique was able to form Cu6Sn5 intermetallic electrode structure. The coating layers produced under suitable spraying conditions contained Cu6Sn5 as a major phase.
Rheological Behavior and Extrudate Swell of Polypropylene/Silicon Carbide Composites
Authors: Rattanapan Apaipan , Sornsuwit Nuttaphong , Dangtungee Rapeephun
Published: August 2013

The rheological behavior and extrudate swell of polypropylene (PP)/silicon carbide (SiC) composites were investigated. Polypropylene-grafted-maleic anhydride (PP-g-MA) was introduced into blending system as a compatibilizer. The effect of silicon carbide loading and surface modification on the rheological behavior of PP/SiC composites were studied using a capillary rheometer and SEM analysis. The results showed that the composites exhibit pseudoplastic behavior as the shear stress and extrudate swell increased with increasing shear rate, while shear viscosity decreased. Moreover, an increasing elongation rate leads to reduce elongation viscosity. The addition of PP-g-MA in PP/SiC composites has significantly decreased the apparent shear stress, apparent shear viscosity and percentage of extrudate swell.
Research on Sustainable Development Capacity of Yellow River Wetland Based on the Ecological Footprint Model - A Case of Dongying
Authors: Zhang Xiao Juan
Published: August 2013

The ecological footprint demand and ecological capacity for the six types of productive land during 2005~2010 are calculated using the ecological footprint model in this paper by taking Dongying City as the example, and the ecological deficit of Dongying City is thereby figured out. Based on this, the indicators such as the ecological footprint of 10k yuan GDP, the ecological pressure index, the ecological diversity index, and the social economic development index, etc representing the sustainable development are calculated and analyzed, to learn that it is not allowed to be optimistic about the ecological environment in Dongying in recent years, as the ecological deficit has increased year after year, and the ecological pressure has become heavier and heavier. However, it is learned through analysis of the ecological footprint of 10k yuan GDP and the social economic development index that under the situation when the ecological pressure on economic growth in the ecological economic system of Dongying is increased, a tendency exists for the consumptive and extensive economic growth pattern to gradually step towards the ecologically intensive pattern, but it is still required to make more efforts in the aspects of reducing the ecological footprint demand and improving the ecological capacity.
Synthesis and Properties of Ca3Co4-xCuxO9 (0≤x≤1.4)
Authors: Liang Yin , Wang Lei , Zhao Kun Yu , Li Zhi Dong , Tang Xue Lian
Published: August 2013

Ca3Co4xCuxO9 (0x1.4) misfit-layered thermoelectric oxides were prepared by traditional solid-state reaction method which cost less, operate easer, may produce Ca3Co4O9 on large scale. XRD study shows that we obtain Ca3Co4O9 major phase in series Ca3Co4xCuxO9 (0x1.4) samples which were sintered at the highest temperature 880°C for 8h by two steps. Metallographic microscopic analysis indicates that some samples grain size range at 2~4μm which were doped less Cu. Doping Cu in different way experiment suggests that Ca3Co4xCuxO9 (x=0.4) sample has lower electric resistivity while Ca3Co4O9+5%Cu samples resistivity increases, compared with Ca3Co4O9 (x=0). The article infers that Ca3Co4xCuxO9 (0x0.4) can decrease the electric resistivity of Ca3Co4O9.
Respiratory Care for Spinal Cord Injury
Authors: Zhu Yan Chun , Chang Jun , Sheng Zhi Gang
Published: August 2013

In this paper the issue of respiratory complications following acute spinal cord injury with reference to the area of high dependency care is considered. It will deal with the pathophysiology behind acute spinal cord injury and its effect on the respiratory system, while discussing the interventions used to prevent these complications. A multitude of therapeutic interventions in the care of respiratory complications has been identified. And positioning, chest physiotherapy and assisted coughing techniques will be considered in this paper.
Accumulation of Vitamin C and Enhanced Tolerance to Iron Deficiency Stress in Transgenic Tomato with GalUR Gene
Authors: Yang Jing Hui , Liu Yan Jun , Huang Jun Xun , Li Jian Ke , Shi Yan Yu , Liu Yi
Published: August 2013

The genes dominating vitamin C (AsA) synthesis in strawberry fruits may be used in increasing levels of AsA and tolerance to environmental stress in other plants by transgenic method. D-galacturonate reductase (GalUR) plays a prominent role in the regulation of the AsA biosynthetic pathway. In this study, transgenic tomato plants (Tg1, Tg2) overexpressing strawberry GalUR gene have been developed and resulted in 2.6-fold increase of AsA in fruits and 1.6-fold increase of AsA in leaves over non-transformed tomato (WT) and the levels of AsA were positively correlated with increased GalUR activity. Moreover, Tg1, Tg2 showed enhanced tolerance to iron deficiency as compared to WT. Under Fe (II) deficiency condition the plant height of Tg1, Tg2 was 1.2-1.7 times, AsA content of Tg1 was 1.8-2.8 times and Fe (II) content of Tg1 was 1.1-1.4 times as much as WT. Otherwise, AsA content of transgenic FRO2 plant (TFRO2) was more than WT but less than Tg1 and its Fe (II) content was more than WT and Tg1. The study demonstrated that the over-expression of GalUR gene enhanced the level of AsA and Fe (II) of transgenic tomato plants which had better growth than WT under iron stresses. Therefore, GalUR and FRO should be interrelate and stimulative each other.
Optimization of Extraction of Bioactive Material-Polysaccharides from the Roots of Taraxacum mongolicum by Box-Behnken Experimental Design
Authors: Chang Kai , Sun Guang Ren , Yao Da Di
Published: August 2013

Dandelion (Taraxacum spp) is an medical active materials used in many traditional and modern herbal medical systems, its polysaccharides have many bioactivities. Taraxacum mongolicum is one of the most widely consumed as Chinese herbal medicine and root tea in Changbai Mountains area, Northeast China. In this study, a procedure for the extraction of polysaccharides from the root of T mongolicum(TMRPS) was established. Based on single-variable tests experiment to determine the ranges of the extraction parameters (extraction temperature (X1), extraction time (X2), and ratio of solvent to raw material (X3)), response surface methodology (RSM) was used to optimize for these extraction parameters (X1, X2, X3) enhancing the forward extraction efficiency of TMRPS by a three-level three-variable Box-Behnken experimental design. The results showed that the ranges of the extraction parameters were determined as 60°C-80°C(X1),1h-3h (X2),20-40(v/m)(X3) by single-variable tests and the maximal yield (9.01%) of TMRPS was reached at extraction temperature 70.2°C, extraction time 1.79 h and ratio of solvent to raw material 28.0 (v):1 (m). Convenient for experiment, appropriate readjustment of these extraction parameters was made. Under these readjusted conditions, the mean extraction yield of TMRPS was 8.85%, which was near to theoretical calculation and indicates that these results were agree closely with model predictions.
A Novel Bone Collector Designed for Intraoral Harvesting
Authors: Jiang Ai , Gao Yong Bo , Wu Xi Feng , Zhou Yan Ming , Sun Hong Chen , Wang Qi
Published: August 2013

Objective:The aim of the article was to systematically evaluate a novel bone collector designed by authors for intraoral harvesting.Method: An electronic combined with a hand literature search was conducted and comparative analysis was performed focusing on the principle,quantity,decontamination and cost between author-designed collector and the one recommended in literature.Result: The collectors recommended in literature all are based on filter principle and contain different size of sieve for collecting bone debris which have the disadvantage of lower bone volumes,suction blocking easily and particularly susceptible to oral microbial contamination.While the bone collector designed by authors is based on dynamics principle and centrifugal separation principle and appeares to be higher efficient,effective decontamination in bone collection and low cost. Conclusion: The principle of the bone collector designed by authors was innovative and will have good application in ordinary native dental clinic for providing efficient osteogenesis,less trauma and less cost.
Kinematics Performance Analysis of a Robot Hip Joint
Authors: Cui Bing Yan , Jin Zhen Lin
Published: August 2013

Kinematics research of mechanism is very important, the dynamic analysis and the design are based on linematics analysis. In this paper, a novel robot hip joint based on 3-RRR orthogonal spherical parallel mechanism is proposed, and Jacobin matrix is established. Then the linematics transmission performance evaluation index is defined. Furthermore the linematics transmission performance index is analyzed. The hip joint has good linematics transmission performance at the initial position. With the increase of workspace, linematics transmission performance gradually decreased. 3-RRR parallel mechanism is the ideal prototype of bionic robot and rehabilitation robot hip joint.
Formation of Polyelectrolyte Brushes on Plate
Authors: Yang Yang , Zuo Chun Cheng , Zuo Yu Xin , Yu Ying
Published: August 2013

The adsorption of polyelectrolyte chains on plate are studied using coarse-grained, bead-spring molecular models and Molecular dynamics computer simulation. It has been applied for studying the formation of polyelectrolyte brushes confined in the plates via the Lennard-Jones potential. The simulation result shows that the polyelectrolyte chains adsorption density is strongly affected by the length of the block carries the positive charge. Correspondingly, the counterions are added to the system. Upon changing the polyelectrolyte chain length N from 8 to 48, the profile of adsorption density decline between N=8 to N=18, and then rise. It has a minimum at N=18.These initial findings can be used as a guide for the preparation of actual polyelectrolyte brushes on plate by the adsorption approach.
The Summary of Related Technologies in PV System
Authors: Ma You Jie , Ma Ling , Zhou Xue Song
Published: August 2013

At present years, the photovoltaic industry has a rapid development. The research of related technologies also has made tremendous progress. The photovoltaic power generation system includes the solar array, controller, batteries, inverter, electricity load, etc. In this paper, combining with domestic and foreign research status quo, respectively summarizes four aspects of photovoltaic system technology, the maximum power point tracking, DC converter, inverter and islanding detection.
Controllable Blasting Technology of Urban Road-Cut Excavation Project under 220kV Super-Voltage Transmission Line
Authors: Xu Shun Xiang , Chen De Zhi
Published: August 2013

There are 220kV super-voltage transmission lines and electrification line above the road-cut excavation blasting project, which is near the buildings, the blasting vibration and fly-rocks shall be strictly controlled, thus the blasting design and construction are difficult. This paper describes the controllable blasting technology design of the road-cut excavation in the complex environment, the blasting parameter selection, the detonating network and the safety technology. Practice has proved that the blasting vibration and individual fly-rock can be controlled by the meticulous design and construction as well as reliable safety technology measures under the condition of no cover when urban road-cut excavation blasting is carried out in the complex environment.
Preparation of Alcohol-Soluble Polyvinyl Butyral
Authors: Zhang Xing Hua , Yang Gen Ling , Hu Jun Qi , Zhang Cai Yun
Published: August 2013

In order to prepare special alcohol-soluble polyvinyl butyral (PVB), the reaction condition was explored in this paper after analyzing the molecular structure of PVB. Under a simple and economical condition, PVB with 14.2% of butyraldehyde group and good alcohol-solubility were prepared, the PVB film forms quickly after the volatilization of ethyl alcohol, and it has good diaphaneity, high tensile strength, and excellent mechanical properties. The highest tensile strength of the PVB film reaches 50.9MPa, which can meet some requirements of many applications.
Magnetic Properties and High Thermal Conductivity of Al2O3 Ceramics Prepared by Spark Plasma Sintering
Authors: Jia Zhen Hua , Tang Xin Gui , Chen Donge , Wu Jun Bo , Liu Qiu Xiang
Published: August 2013

The Al2O3 ceramics with high thermal conductivity prepared the spark plasma sintering (SPS) technology. The structure, image and magnetic properties of the SPS Al2O3 ceramics was characterized by X-ray, field emission scanning electron microscope (FE-SEM) and the vibrating sample magnetometer (VSM) at room temperature. The results shown that the average grain size of the Al2O3 ceramics is about 5~15μm, the thermal conductivity of Al2O3 ceramics up to 24.928 W/(m·K), and the remanent magnetization as higher as 0.00546emu/g and the saturation magnetization as higher as 0.0321 emu/g, respectively. The room-temperature ferromagnetism, which is different from the traditional, possibly originates from the oxygen vacancies.
Luminescent Properties of Eu2+-Activated SrAl2Si2O8 as an Potential Blue Phosphor for near UV LED Chips
Authors: Luo Li Jun , Zhu Yi Wen , Chen Ping
Published: August 2013

The phosphors SrAl2Si2O8 doped with different Eu2+ concentration were prepared by solid-state reaction technique, and their photoluminescent properties at different temperature were investigated. With the increase of Eu2+ content, two emission bands can be observed and this can be interpreted as Eu2+ ions occupying two types of sites in the crystal lattice. And their lifetime is decreasing, this result can be due to energy transfer among Eu2+ ions nonradiately at higher concentration of Eu2+ ions in the host lattices. The phosphor SrAl2Si2O8:0.40Eu shares intense blue emitting with broad excitation in the near-UV range. This phosphor may be an excellent blue phosphor for near ultraviolet InGaN-based white diodes.
Research on Precision Compensation of Cross-Cutting Flying Shear Based on BP Neural Network
Authors: Liu Dong Ye , He An Rui , Gan Wei , He Long Jun
Published: August 2013

In allusion to the numerous nonlinearity factors affecting precision in the cut process of cross-cutting line modeling shear and the difficulties to build precision mathematical model controlled by shear, the essay adopts BP neural network to build model of shear precision compensation system. By Matlab simulation experiment, the data demonstrates nonlinearity complex system can be identified fast and effectively by neural network. The predicted time of the model is 97ms with the control precision within 0-2mm hitting 89%, proving that the model can fully fulfil production demands regarding precision and pace and prove that probability that BP neural network is used in precision compensation of cross-cutting line modeling shear.
Forecast and Geological Significance of Main Channel in Songliao Basin Binbei Area Fuyu Oil Layer
Authors: Li Ji , Liu Jin Wei , Liu Sai
Published: August 2013

For the limitation of seismic data and the difficulty in the identification of main channel in Binbei area. The patterns and methods of two-dimensional seismic data in identifying the main channel are established. It is supplemented by the electrical characteristics of drilling rock to validate which is channel tracking technology of the three-dimensional spectral decomposition. The prediction of Fuyu reservoir main channel is done. The Binbei area has the characteristics of good inheriting, such as multi-material sources and multi-branch. The channel is mainly relying on northern material sources, and also developed western and northeastern material source. Showing meshes characteristics of aggregation and reradiating. Fuyu reservoir's channel sand reservoir is mainly affected by the control of lithology variation belt, flanking occlusion of river bank. Fault truncated block and the vertical block of initial Pan-mudstone and other factors mainly developed three types of oil and gas reservoirs.
Multi-Objective Optimization Based on TTR Interference Analysis
Authors: Ji Da Wei , Huang Yi , Zhang Qi
Published: August 2013

Riser interference has become a critical issue in riser design with the progression of offshore industry into deep water. It indicates that the potential for interference between Top Tension Risers (TTR) depends not only on the Top Tension Factor (TTF), but also on the riser spacing size. For riser system, each impassive factor of interference could make a different effect (cost and safety), which is often incompatible. A Multi-Objective Optimization (MOO) method is proposed to harmonize the two incompatible objectives: cost and safety. Therefore, it greatly facilitates to adapt the present method to riser interference optimization. Example is given to demonstrate the effectiveness and robustness of the proposed method.
A Nonlinear Optimal Iterative Learning Control Algorithm Based on RBF Neural Network and Clonal Selection Algorithm
Authors: Li Heng Jie , Hao Xiao Hong , Pei Xi Ping
Published: August 2013

Improved clonal selection algorithms and RBF neural network are used for solving nonlinear optimization problems and modeling respectively in iterative learning control, and a nonlinear optimal iterative learning control algorithm (NOILCA) is proposed. In this method, an improved clonal selection algorithm is used for solving the optimum input for the next iteration; another one is used to update the RBF neural network model of real plant. Compared with GA-ILC, NOILCA has faster convergence speed, and is able to deal with the problem of inaccurate plant model, can obtain satisfactory tracking through the few several iterations.
Disk Form Grinding Wheel 3D Parametric Modeling of Quadruple-Arc Gear Based on OpenGL
Authors: Ren Zhong Yi , Jiang Bi Qiong
Published: August 2013

Arc-gear tooth profile is complex, especially quadruple-arc gear, it cant be grinding by generating method, form grinding method is still has some difficult in wheel dressing. In this article, the author use software VC++6.0 and OpenGL developed a new and special gear software, when the tooth number and modulus of arc-gear to be machined and grinding wheel diameter is given, this software can generate disk form grinding wheel 3D model,this software is useful to arc-gear form grinding wheel dressing.
The Closed Impeller Milling Avoidance Programming Algorithm
Authors: Liang Quan , Su Dong Hai , Wang Jie , Wang Ye Mu
Published: August 2013

An automatically correction algorithm was promoted to solve the problem that most of the commercial CAD/CAM software can only detect the collision, but can not generate collision-free tool path on cutting path planning. The algorithm uses the configuration space theory to map the boundary into the 2D configuration space, and then the 3D space interference collision problem was transformed into 2D space. Finally, the algorithm was used to generate cutting path of a closed impellers runner. From the result of cutting path planning, the proposed algorithm was able to avoid the interference in the process of tool path planning about closed impeller.
The Research into the Visual and Simulated System of the Orbiting Satellite
Authors: Dong Jia Qiang
Published: August 2013

The visual and simulated system of the orbiting satellite based on the OpenGL technology is designed and realized in this paper, in which a visualization platform of the satellite in-orbit running is constructed. The simulation system has constructed the satellite model and the earth model by making use of 3DS MAX technology, and achieved the visualization of satellite in-orbit-running, the visualization of the communication route and of the overlay effect. At the same time, which has realized the access to the database of the orbiting satellite by means of ADO technology .The practices have proven that the system can simulate the whole process of satellite in-orbit-running in real-time, and provides the assistant support platform of the real-time management and decision. Apart from this, the system provides the network training of the space forces with virtual training platform. It is of great significance to construct the virtual battlefield simulation system.
Study on Stable Section Area of Surge Tank of Asymmetric Water Diversion and Power Generation System
Authors: Liu Wen Bin , You Qiu Sen , Lai Xu
Published: August 2013

Due to the emergence of new asymmetric Water diversion and power generation system, the traditional computational formula for Thoma stable section area has been unable to meet the design requirement. The discriminant formula for stable section of surge tank is obtained in this paper by theoretical derivation. There is a great influence on the stable area of surge tank because of the head loss between surge tank and branch pipe. Based on the definition of k-degree symmetric diversion system, the critical condition of Water diversion and power generation system is obtained. The hydraulic parameters of k-degree symmetric Water diversion and power generation system can be optimized through the critical condition formula.
R&D of Mechanical-Milling Deicing Equipment Cutting Model and Power Calculation
Authors: Zhu Zi Cheng , Zhang Xue Jun , Song Kun Peng , Xu Xiao Pan , Lai Si Wei
Published: August 2013

Fast and economical removal of icing snow on the airport runways, road, highways and other roads is a problem for keeping traffic flowing and driving safety in frozen weather. Based on the analysis of current researches on various mechanical deicing methods, a new mechanical-milling deicing method was presented. The milling cutting model was constructed by improving the cutting model. Subsequently, power design calculation of the milling equipment is also carried out. Through numerical calculation and error analysis, a conclusion that the cutting efficiency correlates only with the speed of deicing mechanism and cutter radius was drawn out. The feasibility of this scheme is validated by experiments of the mechanical milling deicer.
The Application of Traditional Paper Art Skills in Modern Lighting Design
Authors: Xue Hong Yan , Guo Xia , Otgeng Nao Ri Bu
Published: August 2013

Within the inventions of human beings,paper has its unique meaning and influence, this sensitive, slender, fragile, old material, provided a possibility of innovation for artists----traditional paper folding. Many artists take the advantage of its specialty and superiority to design variety distinctive lamps. The essay states the fantasy paper art, and deeply explain how traditional paper art deduces methods and thinking of modern lamps, on the basis of analyzing the specialty and superiority of papers [1].
Design of Pneumatic Rotor Pump Mechanism and Dynamics Analysis
Authors: Lin Chao Wen , Wang Ju , Ding Ming
Published: August 2013

To meet the special needs of the bolting and shotcreting work environment of coal mine, a new pneumatic spring-piston mechanism was designed. The derivation process of the pressure loss equation was described based on S.Morinaga formula. The concrete pumping machanism kinetic model was constructed and analysed using Lagranges Equation. The work of this paper lays a theoretical foundation for optimization design of wet spraying machine system.
The Dynamic Response of Elastic Half Space Including a Semi-Lining Hill
Authors: Nan Jing Fu
Published: August 2013

The dynamic response of elastic half space including semi-cylindrical lining hill while bearing out-of-plane harmonic line source loading on horizontal interface is investigated using the method of complex function and Greens function. the displacement function of incidence wave is given while a out-of-plane harmonic line source is loaded on arbitrary point of horizontal interface;and the solution domain is divided into two domains, an elastic half space with the semi-circular canyon and a cylindrical lining; the scattering wave of semi-cylindrical canyon and the standing wave of cylindrical lining are constructed. Finally, it conjoins the two domains, and a series of infinite algebraic equations can be obtained to settle this problem. In the end, the numerical expressions of the ground motion in the horizontal surface are discussed.