bluuebunny/crossref_metadata_2025 huggingface dataset:
Grey Relational Analysis Model for Comprehensive Evaluation on Risk Early-Warning for Enterprises Investment Project
Authors: Kuang Qing
Published: August 2013

With the development of economic globalization and the rise of knowledge-based economy, human capital as the knowledge and skills of the carrier for the contribution of economic development has been more than other material capital, the competition between the enterprises also change correspondingly to talented person's competition, therefore, human capital has become the strategic resource of enterprise compete. However, human capital is different from other physical capital is the property that makes enterprise on the human capital investment is possessed of the potential huge risk. For enterprise speaking, how to identify, evaluate and prevent human capital investment risk to become the enterprise manpower management the important content in the work, has become the key to business success or failure. Therefore, further, thoroughly studies the enterprise human capital investment risk related theory is of great theoretical significance and practical significance. In this paper, we investigate the group decision making problems for evaluating the risk early-warning for enterprises investment project based on the grey relational analysis model with interval-valued intuitionistic fuzzy information. A modified GRA analysis method is proposed. Then, based on the traditional concept of GRA method, calculation steps for solving interval-valued intuitionistic fuzzy group decision-making problems are given. Finally, an illustrative example for evaluating the risk early-warning for enterprises investment project is given.
Thermal Conductivity of Akar Bamboo (Dendracalamus pendulus) and Semantan Bamboo (Gigantochloa scortechinii)
Authors: Jusoh Noor Zuraida , Zakaria Abdul Muhaimin , Ahmad Mansur , Azmi Ibrahim
Published: August 2013

Bamboo is known as economically and environmental friendly plant. The most common application of bamboos is furniture and traditional handcrafts. Many studies on mechanical and physical properties of bamboo have been conducted. However the thermal insulation property of these abundance species has never been recognized and commercially utilized which results in the reason why thermal properties of bamboo have never been studied. In this experiment, two species of bamboo which are Akar bamboo (Dendracalamus pendulus) and Semantan bamboo (Gigantochloa scortechinii) has been tested to determine their thermal conductivity. The test samples were prepared to conduct this experiment in parallel and perpendicular grain direction towards the heat source. Wood adhesive was used as the binder for cylindrical laminated bamboo. The result shows that thermal conductivity of bamboo is low in perpendicular direction towards the heat source compared to the parallel direction. Different species of bamboo also give significant result on thermal conductivity hence improved the insulation properties of the bamboo.
Effect of Anodizing on Strength of Carbon-Fibre Aluminium-Laminated Composites
Authors: Marzuki Haslan Fadli Ahmad , Mohamad Mawarni , Engku Ubaidillah Engku Ahmadhilmi , Nordin Mohd Nasha’ain , Zainal Abidin Mohd Fadzlee , Roslani Norazlan , Junos Yusli Mohamad , Omar Salleh , Jaafar Mariatti
Published: August 2013

Fibre-metal-laminated composites that consist of aluminium and carbon fibre/epoxy was widely use in engineering fields such as in aerospace and civil application. An issue arise for this laminate systems is that aluminium surfaces must be treated to ensure the effectiveness of load transfer mechanism in the interfacial region. In this research, the effect of anodized layer on the aluminium surface towards strength of the carbon fibre-aluminium-laminated composites was studied. Aluminium 6061-T6 was anodized using phosphoric acid as electrolyte and different anodizing voltage to produce different surface morphology. The surface roughness and morphology were determined via Atomic Force Microscopy and its wettability was determined by Static Contact Angle. Then, anodized aluminium was laminated with carbon fibre/epoxy system via vacuum bagging techniques. It shows that the strength of laminated composite with anodized surface increases up to 26% compared to laminates without anodized surfaces. Furthermore, the failure mechanism of laminated composite with anodized surface resulted in partial adhered failure instead of adhesive failure. These show that anodized surfaces contributes to the effectiveness of load transfer mechanism in fibre-metal-laminates composites.
Strength and Folding Performance of Polypropylene Packaging Samples in Hot Air and High Humidity Condition
Authors: Othman Mohd Hilmi , Sulaiman Hasan , Main N.M. , Li L.
Published: August 2013

This research was conducted to evaluate the strength and folding performance of polypropylene packaging samples, when exposed to hot air and high humidity condition. Three types of polypropylene samples were chosen, which were flat plastic, plastic with hinges, and plastic film. All of these samples were tested for tensile strength; except plastic with hinges that received additional test to evaluate the folding endurance. American Society for Testing and Materials (ASTM) D638 standard was applied to analyze the mechanical strength of these plastics. This standard was used to determine the value of stress, strain, and Young’s modulus. Each sample was exposed to different temperature settings, which were 20°C, 25°C, and 30°C for high humidity condition and 60°C, 65°C, and 70°C for hot air condition. As for the folding endurance test, the hot air temperatures were selected at 60°C, 65°C and 70°C and for the high humidity condition, the range of relative humidity were set at 50%, 55% and 60%. Based on the tensile test results, the values of stress and Young’s modulus were higher at higher humidity as compared with the values under hot air condition. However the strain value was the opposite of the stress and Young’s modulus, whereby the values started to deceive under high humidity condition, but kept on increasing under hot air condition. In folding endurance test, it was confirmed that the hinge performed better under hot air environment than high humidity. As the relative humidity increases, the average number of folding decreased from 3.00x106 to 2.89x106 cycles. In the other hand, thevalue of folding numbers increased from 3.34x106 to 3.37x106, with increasing temperature. In conclusion, through this performance analysis, the outcomes can be applied to other packaging materials and appliances, which are related to high temperature and high humidity condition.
Grinding Force Research on Nanostructured Ceramic Coatings
Authors: Liu Wei Xiang
Published: August 2013

In diamond wheel precision grinding process, the grinding force of nanoceramic coating materials can be divided into single grain grinding force and wheel unit area grinding force, this paper studied the two grinding force, results showed that, with the increase of grinding depth, grinding wheel per unit area grinding force and single grain grinding force increased. The two kinds of grinding force increased also with the increase of workpiece feeding speed, the normal grinding force and the tangential grinding force decreased with grinding wheel speed increase. grinding parameters, as diamond wheel grit size and binder type, effected also on the grinding force.
Acoustic Study Based on Sustainable Green Polymer Treated with H2O
Authors: Hassan Nik Normunira Mat , Rus Anika Zafiah M. , Nurulsaidatulsyida S. , Mohid Siti Rahmah
Published: August 2013

Green polymer foam was prepared by the reaction of green monomer based on vegetable oil with commercial Polymethane Polyphenyl Isocyanate (Modified Polymeric-MDI) and distilled water (H2O). The morphological study of green polymer foam was examined by Scanning Electron Microscope (SEM) and acoustic property by means of H2O composition ratio equivalent to weight of polyol. It was found that the cell size of green polymer foam has significantly increment as well as H2O loading increased. Increasing of H2O more than 50% equivalent to weight of polyol shows nonuniform pore distribution, large average pore size and smallest number of pore. Furthermore, the cell size of neat green polymer foam gives 400μm up to 1833.3μm with high loading of H2O. In addition, the cell size of green polymer foam influences by the increasing amount of H2O loading and enhanced the sound absorption property at low frequency level.
Research on Kinetics of Hydrolysis Preparation of Micro-Molecular Dextran
Authors: Liao Shu Qiong , Peng Xiao Yu , Zhang Xue Wang , Huang Kelin , Wang Ben , Gan Ji Wen , Xie Qing Ruo , Nong Wei Jian , Li Ke Xian
Published: August 2013

Micro-molecular dextran was prepared in sub-critical water and sub-critical Water/CO2 by hydrolysis of dextran20. The obtained products were mainly characterized by GPC. The kinetics of hydrolysis of dextran20 has been studied in the temperature range of 423.15K-463.15K. It was found that the level of dextran20 hydrolysis in sub-critical water and sub-critical water/CO2 was first level kinetics equation. The activation energy was also calculated. The results demonstrated that the molecular weight of micro-molecular dextran could be controlled.
Durability of Traffic Signs and Retroreflective Materials
Authors: Su Wen Ying , Wang Zhen Hua , Li Dan
Published: August 2013

In this paper, the durability of the traffic signs at Home and Abroad category and its photometric performance and weather resistance level of retroreflective material standard analysis to explore the scientific correlation between the durability of traffic signs and retroreflective material. Association analysis of the durability of the traffic signs and retroreflective material, the durability of the traffic signs depend on the photometric performance of the retroreflective material should conduct in-depth research for the photometric performance of the retroreflective material attenuation law for the scientific forecast traffic signs service life to provide a theoretical basis.
The Higher Order Crack-Tip Field for Reissners Power FGMs Spherical Shell
Authors: Dai Yao , Lei Zhang , Chong Xiao
Published: August 2013

The crack problem of power functionally graded spherical shell with Reissners effect is studied. Based on the Reissners theory, the governing equation of power functionally graded spherical shell is given. The eigen-solution of the crack tip field is obtained by using the asymptotic expansion method. The result is similar to Williams solution for homogeneous material.
Development and Application of CAE Automatic System Based-On Tcl/Tk
Authors: Jiang Da Yong , Zheng Huai Wen , Cai Lei , Qiu Bin
Published: August 2013

With the rapid development of the automobile industry, improving production efficiency has become a key factor to enhance competitiveness. However, during the CAE R&D process, it has a serious impact on the labor costs due to the operation repeatability, that is to say, this work pattern drastically reduces the company's production efficiency and economic benefits, that is why it is very essential to develop the CAE automatic system. In this paper, how to develop the CAE automatic system is discussed in detail firstly, and then through the linear static analysis for a rear suspension to verify the feasibility and value of the CAE automatic system.
Design and Simulation on Righting Manipulator of the Remote Control in Workover Operations
Authors: Wang Jing , Lu Meng Mei , Li Yi Cheng , Liu Li , Cao Wei
Published: August 2013

Righting manipulator is imitating the shape of the hand, to replace the worker in the wellhead operations crawl and righting columns action, implemented in unmanned condition wellhead mechanical pipe string centering automatically to a predetermined location function This review focuses on remote control wellhead operations structural design of the righting manipulator, theoretical research, virtual simulation and functional experimental studies.
Analysis of Vibration Characteristics Basing on a Multi-Rigid Suspension Model and a Multi-Flexible Suspension Model
Authors: Li Xue Ying , Yu Zhuo Ping , Yu Zeng Liang , Xiong Lu
Published: August 2013

The torque vibration derived from in-wheel-motor transmitted to body frame through suspension system without the absorption of mechanical transmission parts, then excited every body panel to shape the vehicle interior noise, which influenced the quality of the vehicle NVH. This paper aims to build an accurate suspension system simulation model to analyze the influence of suspension parts parameters to system vibration transmission property. Basis on a novel empirical model of rubber bushing, a multi-rigid suspension model and a multi-flexible suspension model had been established respectively. The vibration characteristics of two models were simulated, furthermore the swept-sine exciting vertical force signal on wheel contact point were input on the simulation models to find the difference between rigid and flexible model. The simulation results show that: the multi-flexible model can reflect the vibration characteristics of the suspension system more accurately in the high frequency range and so is it more applicable to the simulation analysis of vibration characteristics of in-wheel-motor electric vehicle suspension system.
Study of Dual-Active Series Resonant DC-DC Converter for High Power Applications
Authors: Zhang Yan Zhi , Wang Ping
Published: August 2013

This paper investigates a high power dual-active isolated DC-DC converter employing LC series resonant technology. The switches of the circuit may work in either zero-voltage-switching (ZVS) or zero-current-switching (ZCS) which greatly reduces the switching power losses and raises the transmission efficiency. The dynamic performance of the circuit and the formula of the output power which no paper has given the exact expression can get by building the DC model of the converter. Finally, simulation and experiment have been conducted to verify the correctness of the analysis.
Electrochromic Performance of NiO Films in Alkaline Medium
Authors: Rodzi Siti Zairyn Fakurol , Mohd Yusairie
Published: August 2013

An investigation on the electrochromic performance of NiO films in 1M KOH was carried out using cyclic voltammetric technique. The NiO films were deposited on ITO glass substrate using bath solution containing nickel sulfate, sodium acetate and sodium sulfate at pH 6.7 by applying constant current of 0.2 mA cm-2 for 300 s at different deposition temperatures (ie: 25 °C, 40 °C and 80 °C). The as-deposited films were undergone post treatment through annealing process at 300 °C for 900 s. The surface morphology of the NiO thin films was characterized by field-emission scanning electron microscopy (FESEM) and the electrochemical properties of both NiO films were measured in 1M KOH electrolyte by cyclic voltammetry (CV). Deposition at 25 °C produced a smooth and compact thin film on the ITO surface. However, when higher temperatures were used (ie: 40 °C and 80 °C), porous structure of NiO formed. The electrochromic performance of the smooth film prepared at 25 ° C showed is better than the porous films. The annealing process has enhanced the stability of NiO film for intercalation and de-intercalation of OH- ions during cycling in 1M KOH. These results show that the temperature (heating and annealing process) has significantly influenced the formation of NiO films on ITO substrates which affected the performance of the electrochromic material.
Design the CCD Tablet Thickness Measurement System Based on Laser Triangulation Method
Authors: Zhao Ya Wei , Gao Ru , Liu Chun Yan , Zhang Jing
Published: August 2013

This system brings forward the CCD measurement method based on oblique laser triangulation , which to resolve the minimal thickness measurement precision problem, in this system use linear array CCD, then used CCD as a photoelectric conversion device, the image on the CCD image point displacement variation to realize planar sheet thickness measurement, design and construction of the contactless thickness measurement system. Finally, the experimental analyze the measurement error of the system, prove the feasibility and validity of the system.
Real Time Web Based Monitoring and Calibration System for Diesel Engine
Authors: Zhuang Ji Hui , Xie Hui , Yan Ying , Zhu Zhong Wen
Published: August 2013

This paper presents the development of a real time web based system for monitoring and calibrating diesel engine using internet and ECU communication technologies. The development system consists of an in-vehicle device, capable of acquiring various engine data by LIN/CAN, a client tool and a web server for the application. The data is send from ECU through an in-vehicle device which collects and process information using KWP2000 protocol to server, thus allowing users to remotely monitoring and calibrating diesel engine from their office instead of testing from the scene.
The Dividing Frequency Bands Prediction Method Based on Bornitz Model for Train-Induced Environmental Vibration and its Application
Authors: Zhang Guang Ming , He Yu Long , Yang Li Zhong
Published: August 2013

The frequency component of ground vibration induced by train is complex. The propagating attenuation characteristics of ground vibration are dependent on frequency. A new prediction method based on Bornitz model for predicting the train-induced ground vibration is presented in this paper. This approach divides the frequency component into many small frequency bands according to one-third-octave. Then it predicts the vibration acceleration level VAL of each frequency bands based on Bornitz model respectively. Finally, the predicted value of Z-vibration level VLZis computed by the predicted value of VAL and the corresponding frequency-weighting value C. The traininduced ground vibration was measured and predicted in Chengdu-Dujiangyan railway. The results of comparing the predicted value of VLZ with the measured value show that the prediction value of VLZ is 3.8dB less than the measured value in the prediction point of 25m away from the railway, where the vibration strength occur rebound. In other five prediction points the ground vibration predicted value are 1.3~3.1dB more than measured value. This study shows that using the prediction method presented in this paper for predicting train-induced ground vibration has good accuracy on the whole.
Garlic Cutting Umbilical Based on Image Processing and GUI
Authors: Wang Yan Yao , Zhao Li Qing , Sun Qing Wei
Published: August 2013

Through the research of special algorithm which is suitable for the position of garlic cutting umbilical and the garlic cutting umbilical software system which is compiled by a GUI interface program, this issue realizes automatic and precise positioning of garlic cutting umbilical by using digital image processing techniques. The results showed that this program could distinguish garlic roots with garlic body very well and it could provide technical support for the mechanized cutting of garlic roots.
Does Complex Metaheuristic Out-Perform Simple Hill-Climbing for Optimization Problems? A Simulation Evaluation
Authors: Zhang Xing Wen
Published: August 2013

In this paper we compare the performance of metaheuristic methods, namely simulated annealing and Tabu Search, against simple hill climbing heuristic on a supply chain optimization problem. The benchmark problem we consider is the retailer replenishment optimization problem for a retailer selling multiple products. Computation and simulation results demonstrate that simulated annealing and Tabu search improve solution quality. However, the performance improvement is less in simulations with random noise. Lastly, simulated annealing appears to be more robust than Tabu search, and the results justify its extra implementation effort and computation time when compared against hill climbing.
Fuzzy Recognition Intelligent System Based on Cash Character
Authors: Wu Peng , Ruan Ning Jun , Xie Kai
Published: August 2013

Actually as a question of pattern recognition, the research of cash recognition mainly focuses on three aspects: data acquisition, feature extraction and classifier design. In order to finish the real time recognition of Chinese cash, a fuzzy recognition intelligent system is presented in this paper. We use this arithmetic in the processing of information of cash and the recognition of the cash. Experiments has proved that this method can auto organize and auto study, and meet the need of complex system for the networks no linearity and high collateral.
The Perception System of External World for Robot
Authors: Wang Jian Rong , Yang Ya Long , Wei Jian Guo , Yu Mei
Published: August 2013

World Model is the robots view of the world and contains information for the robot to make decisions. World Modeling is the process that robots map the sensor data into the World Model. The complexity of the sensors increased, so does the data process components. In this paper, an architecture for world modeling is proposed. This architecture enhances the extensibility of the data process components by decoupling them with a middleware, and it improves the efficiency by computing in parallel. The combination of this architecture and the PDDL will also be presented.
A Robot Simulation System for Self-Location by Using Field Visual Information
Authors: Wang Jian Rong , Yu Yang , Wei Jian Guo , Yu Mei
Published: August 2013

This Paper will introduce methods used to resolve self-location problem of humanoid robots. There are two method that will be mentioned in this paper. A traditional method which uses marks and flags on the soccer field for robot location will be introduced at first. This paper will also discuss how to solve the singularity problem in traditional self-location method. The optimization self-location method which uses sidelines on the soccer field will be introduced at the same time. This paper will introduce how to mapping the field sidelines in vision to the field sidelines of soccer field. This method is implemented and tested in Robocup 3D Soccer Simulation League. The results show that the accuracy of self-location method will be increased by taking full use of soccer field sidelines in vision information.
Surface Integrity and Cutting Temperature in Machining of Biomedical Magnesium Alloys an Overview
Authors: Gintar Turnad Lenggo , Hasan Fawad , Rani Ahmad Majdi Abdul , Bambang Ariwahjoedi
Published: August 2013

This review provides some recent progress of the research in machinability assessment of magnesium alloys. Surface integrity and cutting temperature as the main machinability terms are widely discussed in this paper. Machining parameters, such as cutting speed, feed, depth of cut, play important roles in developing good surface finish and high quality surface integrity. Achieving good surface finish (low surface roughness) is a main objective in machining, especially for biomedical applications. Cutting temperature during machining has to be taken into considerations. High temperature during cutting leads to low surface finish and higher tool wear rate, leading to low tool life and poorer surface finish.
Modal Analysis of Permanent Magnet Synchronous Motor of Electric Vehicles
Authors: Li Xiao Hua , Huang Su Rong , Dai Ying
Published: August 2013

First, using the analytical method to estimate the natural frequency of a permanent magnet synchronous motor core, the focus of the winding and the winding end of the natural frequency of the motor, respectively, the finite element method and experimental modal analysis method verify the correctness of the analytical method, this article resolve modal analysis method in the motor design stage can be used to quickly estimate the natural frequency of the motor.
Optimal Excitation Control System of Synchronous Generator in Big Disturbance Based on Improved LOEC Mode
Authors: Li Zi Сheng , Yuan Bao Shan
Published: August 2013

Linear optimal excitation control (LOEC) mode takes the power system as multiple control target, it has better dynamic performance and adaptability in the vicinity of the equilibrium point. But when the disturbance is too large, the system performance will be deteriorated, meantime controlling lack the terminal voltage control. This paper presents the optimal excitation controller which has a wide excitation control system adapting to a wide range disturbance. The choice of variables is changed based on the variables used in the excitation control of exact linearization. The speed deviation differential is used to replace the electromagnetic power deviation in commonly optimal excitation control system, and the terminal voltage control is added. The improved excitation control system adaptability is enhanced. The simulation results show that the improved excitation controller has a wider adjustment range, anti-disturbance and strong characteristics.
PI Controller Design for Temperature Control of Reheating Furnace Walking Hearth Type in Setting up Process
Authors: Pongam T. , Srisertpol J. , Khompis V.
Published: August 2013

The slab reheating process for iron rolling to the small diameter wire in Ratchasima Steel Productions Co., Ltd. factory (Nakhon Ratchasima, Thailand) use the Reheating Furnace Walking Hearth Type (RFWHT). The Reheating Furnace was installed in 1964. The problems in the present are increasing performance of temperature control and reducing production cost. The factors affecting the price of wire rod are electrical power and fuel consumption. Because of this reason, the system requires an optimal PI controller for control the temperature inside each zone of the furnace and the steel production manufacture select the time from 10:00 PM to 8:00 AM for steel production because it has low cost. In addition, the process will stop during the day time. This paper presents the mathematical model for temperature control of RFWHT in setting up process using system identification with Genetic Algorithm. The setting up process consist RFWHT, fuel flow control through servo valve and PI controller. The result of the research demonstrates to create structure of the mathematical model of this process and PI controller design for the temperature control. Furthermore, the temperature responses show that the PI controller can reduce fuel consumption rate of the system.
Incremental Circuit and Sensitivity Simulations Using Iterated Timing Analysis Algorithm
Authors: Chen Chun Jung , Chen Yu Wei , Tsai Chang Lung , Lee Chih Jen , Sun Jenn Dong
Published: August 2013

This paper investigates incremental circuit/sensitivity simulations for large-scale MOSFET circuits using the well-known ITA (Iterated Timing Analysis) algorithm. Incremental simulation uses the result waveforms of previous simulation to fasten the simulation speed, which is quite advantageous in the practical incremental-modifying circuit design strategy. Most proposed methods have been implemented and tested to justify their advantages.
Design of SDH Positive/Zero/Negative Justification Circuits Based on FPGA
Authors: Cui Zhou Juan , Hu Liao Lin
Published: August 2013

A successful design which used FPGA to do Positive/Zero/Negative Justification for adapting E1 (2.048Mbit/s) to SDH C-12 is presented. Gray code is adopted to realize the sampling of write pointer in reading clock domain and induct frequency doubling technology to deduct/insert reading clock, and a positioning counting device is set to complete the positioning insert of specified bytes. Asynchronous FIFO and Ping-Pong operation technique are both adopted. The design realizes stimulation, placement and routing under Quartus II 9.0 circumstances. It is a reusable hardware module which increases performance when compared to existing solutions.
The Research of Electronic Payment Platform Based on Public Key Infrastructure
Authors: Tian Jing Song , Wu Xiao Qin , Hu Rong
Published: August 2013

with the network intelligent development, the technique widely application brings huge convenient for peoples life and work. The network openness exist great hidden troubles along with the information security. Based on the security system of public key infrastructure, we can determine the users information security and completion through the method of providing secret keys and certificate managing by both sides. Through the research of public key infrastructure, we can design out the planning of electronic payment platform and apply it in the practical society. This is the most important point that network staff and electronic commerce works are searching.
Energy Guided and Workload Adaptive Modeling for Live Migration
Authors: Wei Bing
Published: August 2013

Live migration provides desirable benefits in the field of energy saving, which packs service into fewer physical servers while maintaining the performance level. In this paper we present energy guided and workload adaptive modeling for live migration, two models are developed respectively including energy guided migration model and workload adaptive model, the former model selects the best migrating virtual machine (VM) candidate with the minimal energy consumption while the later model chooses the best migrated physical server candidate in terms of both energy and workload characteristics, furthermore, concerning the service quality, workload adaptive model also takes charge of the determination of the live migration moment. The experiments results show that our approach achieves significant energy saving and robust live migration.
Design of Standard 12-Lead ECG Acquisition Terminals Based on ADS1298
Authors: Wang Feng , Jiao Hong Yu , Zhou Ping
Published: August 2013

This paper introduced a compact design of portable standard 12-lead ECG acquisition terminals. For portable application purposes, an ultra-low power 16-bit microcontroller, which acted the core unit of the terminal, an 8-channel 24-bit , low-noise low-power high speed,analog-to-digital converter incorporated ECG features,external SD card storage,USB data-transmission module were intergrated into the terminal.Through the terminal,the sampling,storage,transmission and display of standard 12-lead ECG could be implemented in real-time.
Construction of Eukaryotic Expression Vector and Transient Expression on Mycobacterium bovis mpb83,mpb70 and Cattle il-15 Gene
Authors: Zheng Yan Ru , Wang Chun Fang , Gao Yun Hang , Guan Jia Ning , Lin Jia Ming , Gao Da Ming , Ma Hong Xia , Hou Shuang , Jiang Xiu Yun
Published: August 2013

Based on the splicing by overlapping extension (SOE) polymerase chain reaction (PCR),fusion gene mpb83-70 andil-15were ligated and cloned into pMD18-T,then recombinant plasmid pMD-83-70-15 was constructed. pMD-83-70-15 and pVAX1-BMS were digested by double enzymesHindIII andEcoRI, the purified mpb83-70-il-15 was subcloned into pVAX1-BMS,then recombinant plasmid pVAX1-BMS-83-70-15 was constructed and transient expressed in Mark145 cell. These results laid solid foundations for further studies on mpb83-70-il-15.
The Research of Forgeability for Warm Temperatures Using Simulation
Authors: Kapustova Maria , Zvončan Marek
Published: August 2013

At nowadays the interest of forging shops is focused on technology of accurate die warm forging. It is possible to reach higher exploitation of material, higher surface quality and higher accuracy of forgings in comparison to standard forging. The advance of warm forging relates to research of ductility and plasticity of forged material in warm temperature range. This paper provides the results of the research of 16MnCr5 steel forgeability in the interval of temperatures of warm forging. Steel alloy 16MnCr5 is proper for case hardening and for the production of precision die forging. In this paper the description of methodology for the proper interval setting of temperatures of warm forging for the given type of steel can be found. Practical test and a numerical simulation has proven the propriety of the examined steel for forging in the temperature interval 600, 650, 700 and 750 °C. For the steel forgeability verification in the recommended interval of warm forging temperatures, the technological test of upsetting according to Zidek was used.
Facile and Efficient Anti-Fouling Surface Construction on Poly(dimethylsiloxane) via Mussel-Inspired Chemistry
Authors: Lin Quan Kui , Huang Xiao Jie , Tang Jun Mei , Chen Hao
Published: August 2013

Poly (dimethylsiloxane) (PDMS) silicones have found many applications in biomedical devices, such as catheters and intraocular lenses. But their hydrophobicity makes the possibility of the unexpected bioadhesion. In this paper, we reported a facile and efficient anti-fouling surface modification method on PDMS via self-polymerization of dopamine and the followed hyaluronic acid immobilization. Dopamine, commonly used as a neurotransmitter, is also a small molecule mimic of the adhesive proteins of mussels. Self-polymerization of dopamine can produce a thin polydopamine (PDA) layer on PDMS surface. Subsequently, thiol group functionalized hyaluronic acid (denoted as HA-SH) was immobilized covalently onto the resultant surface by the coupling between thiol group and reactive polydopamine layer. Then, the in vitro adhesion behaviors of the lens epithelial cells (LECs) and macrophage were investigated for evalution the anti-fouling effect of the hyaluronic acid modified PDMS surface. The results indicated that the cellular adhesion on PDMS were greatly decreased after hyaluronic acid modification, which suggested the potential application of such hyaluronic acid modified PDMS in biomedical applications.
Analysis of Genetic Subtypes and Distribution of Hantavirus in Jilin Area
Authors: Zhao Chen , Zhao Yang , Yuan Zhong Hai , Sun Ke Xin , Li Yan
Published: August 2013

To investigate the subtypes and distribution of hantavirus in Jilin area. Rattus norvegicus were collected from the main endemic areas of Jilin area and hantavirus in the lung were identified by indirect immunofluorescence assay. M segments of positive samples were partially amplified with Nested RT-PCR and sequenced. Phylogenetic analysis was used for genotyping. All hantaviruses from R. norvegicus were Seoul virus in Jilin area. Phylogenetic analysis of M segments showed that Seoul hantaviruses carried by R. norvegicus in Jilin city were the S3 subtype,and there was no HTNV and PUUV found. The results showed that the subtype of Seoul hantaviruses in Jilin area was S3.
Synthesis and Characterization of Fe,Cr or Sn-MSU-X and Catalytic Applications
Authors: Wu Jia Feng , Zhao Yu Mei , Liang Peng
Published: August 2013

Iron, chromium or tin containing mesoporous materials MSU-X were synthesized using Pluronic F127 as templating agent under the neutral pH condition by one-step method. The samples were characterized by XRD, N2 adsorption, TEM, FT-IR, UV-Vis. The surface acid nature of Sn-MSU-X was investigated by FT-IR of pyridine adsorption. The results indicate that Fe, Cr and Sn have been successfully incorprated into the framework of the MSU-X samples. And these samples have an uniform pore size distribution. Fe-MSU-X and Cr-MSU-X exhibit disordered worm-like mesostructure. However, Sn-MSU-X exhibits highly ordered hexagonal-pores mesostructure. The Fe-MSU-X and Cr-MSU-X catalysts are more active for the selective oxidation of phenol and cyclooctane, respectively.There are both Lewis and Brönsted acid sites on the surface of Sn-MSU-X.
Preparation and Characterization of Sodium Alginate-Polyvinyl Alcohol Wound Dressing System Containing Ciprofloxacin Hydrochloride
Authors: Li Zhao Qing , Li Zhen , Zhao Hong , Zheng Wei , Li Li
Published: August 2013

Sodium alginate (SA)/polyvinyl alcohol (PVA) matrix-based wound dressing system containing ciprofloxacin hydrochloride, a topical anti-infective drug, were obtained by a casting/solvent evaporation method. The FTIR spectrum indicated that a strong interaction between SA and PVA and a good compatibility between ciprofloxacin hydrochloride and SA/PVA. The surface contact angles showed that the SA/PVA membrane has good compatibility. The water absorption and water retention rate increased when the concentration of PVA increased. The swelling ratio of SA/PVA mixtures indicated that the membrane go to balance in about 30min. Moreover, the release rate of ciprofloxacin hydrochloride was found to be increased with the increment of PVA content for all the composite samples. Thus, SA/PVA wound dressing systems containing ciprofloxacin hydrochloride could be a novel approach in wound care.
Morphological and Mechanical Evaluation of Hybrid Scaffolds for Bone Regeneration
Authors: Gomez E. , Dias J. , D’Amora U. , Rodríguez C.A. , Gloria A. , Bártolo P.
Published: August 2013

deal scaffolds for tissue engineering should mimic the complex characteristics of natural tissues and their mechanical performance. This work presents a new concept of hybrid scaffolds produced through the combination of electrospinning and an additive bioextruder system. The obtained results have shown that the hybrid structures present improved mechanical properties
Research on the Interaction between Pheophorbide and Bovine Serum Albumin
Authors: Ye Yong , Chen Xue Lan , Guo Ya
Published: August 2013

The interaction between natural pheophorbide (a superior photosensitizer) and bovine serum albumin (BSA) in physiological condition is investigated by means of UV-Vis, fluorescence and synchronous fluorescence spectra so as to provide the basis for clinical use. Natural pheophorbide was isolated from silkworm excrement. BSA in pH 7.4 Tris buffer mixed with different concentration of pheophorbide was kept at certain temperature for 3 h or under illumination by laser at 630 nm for 20 min. UV-Vis absorption of BSA was enhanced and its fluorescence was quenched by pheophorbide. Illumination of laser at 630 nm intensified the quenching. The mechanism is deemed as mainly static quenching. The binding constants Ka at 300, 310, 320 K are separately 6.93×1012,7.40×1012,6.82×1012 L/mol/s respectively. Number of binding sites n is 1; the binding distance R is 3.70 nm, and that suggests non-radiation energy transfer from BSA to pheophorbide. The thermodynamic parameters of the binding reaction are H=36.7 kJ/mol, S=213 J/mol/K, and G negative value, and indicates that hydrophobic force plays a predominant role in the process, and it is a spontaneous interaction. Synchronous fluorescence spectra show that pheophorbide mainly interacts with tryptophan residue of BSA and leads to the promotion of hydrophobic force. Pheophorbide can bind to serum protein and be transported in vivo, makes no destruction to molecular structure of serum protein, but causes its conformational alteration.
Hydrolysis of BNPP Catalyzed by the Dodecyliminodiacetate Nickel(II) and Copper(II) Complexes
Authors: Huang Sheng Tian , Li Shen Xin , Wang Ying , Wu Song , Hu Wei
Published: August 2013

Two novel dodecyliminodiacetate nickel (II) and copper (II) complexes were synthesized and characterized, and these complexes were used as mimic hydrolytic in catalytic hydrolysis of bis (p-nitrophenyl) phosphate (BNPP). The analysis of specific absorption spectra of the hydrolytic reaction systems indicated that the catalytic hydrolysis involved the key intermediates formed by BNPP with nickel (II) complexes. The kinetic parameter of BNPP catalytic hydrolysis has been calculated and the temperature effect of reaction system and structure effect of the complexes on the rate of BNPP hydrolysis catalyzed by the complexes have been discussed.
Synthesis and Thermal Analysis of C16H13N5O3 and its Complexes with Rare Earth
Authors: Wang Si Jiao , Liu Xiang Rong , Song Chao Chao , Zhao Shun Shen , Yan Lan Ying , Li Kan She
Published: August 2013

The 2-carboxybenzaldehyde-1H-benzotriazol-1-aceylhydrazone (C16H13N5O3) has been synthesized and used in preparing thirteen novel rare earth complexes. The complexes were characterized by elemental analysis, FT-IR, and UV-Vis, and the formula is RE (C16H11N5O3)·NO3·xH2O·yC2H5OH (RE=La, Ce, Pr, Nd, Sm, Eu, Tb, Ho, Er, Yb) and RE(C16H12N5O3)2·NO3·5H2O (RE=Gd, Dy, Y) .The thermal decomposition processes of the thirteen complexes were studied by thermal gravimetric technology and their apparent activation energy values were calculated by Kissingers and Ozawass method.
Numerical Simulation of Air Curtain Used in the Cold Store through Different Models
Authors: Xie Jing , Miao Chen , Gao Zhi Li , Shi Jian Bing , Wang Tai
Published: August 2013

Air curtains are commonly used to cut off air flow between the cold store and hot environment, and reduce heat and mass transfer in order to maintain the low temperature in the cold store. CFD can be used to predict operation rule of air curtain used in the cold store intuitively and modelling is the most important part of numerical simulation of air curtain used in the cold store. In this study, different numerical models including standardmodel (with and without boussinesq approximation) and RSM (with and without boussinesq approximation) were used to simulate the temperature field and air flow field in the cold store and operation rule of air curtain used in the cold store after air curtain opened for 60s. Meanwhile, the actual operation of air curtain used in the cold store was tested and the simulation values were compared with the experimental values. The results showed that the velocity of the central mainstream decayed slowly, but the velocity of both sides of air curtain decayed fast. The optimal model used to predict the temperature field and air flow field in the cold store and operation rule of air curtain used in the cold store was standardmodel with boussinesq approximation, the relative error was within 20%. The optimal model can be used to predict the temperature field and air flow field in the cold store during different times in the future research.
Standardized Design of Warehouse Management for Electric Energy Measuring Center
Authors: Jiang Chao , Zhang Chen Guang , Zhang Xu
Published: August 2013

Warehouse management is an important content in the electric energy measuring center standardization construction and a very important part in the full life cycle management of electrical energy measuring instruments. By introducing intelligent warehousing technology, a kind of standardized work flows was proposed based on the production characteristics of the instruments. It combines with the advantages which are high degree of automation and highly integrated. The work flow specificities the new share energy meter storage process, energy meter of storage processes for Verification, as well as distribution warehousing processes. The overall architecture of Energy Metering Centre production scheduling platform was proposed which divided into field equipment layer, monitoring and management layer, production scheduling layer. The design of the layers were introduced.
Comparison of Titanium Dioxides Prepared from Different Materials and its Photocatalytic Evaluation
Authors: Rhee Dong Seok , Kim Young Do , Son Se Gu
Published: August 2013

Titanium dioxides were synthesized from two different titanium salts, which contained chlorine and sulfur respectively. Titanium dioxide prepared from TiCi4 and had a particle size of ca. 20nm and its phase transition from anatase to rutile stated at 500°C. Titanium dioxide from TiOSO4 had a particle size of ca. 50nm and retained its anatase and sperit structure until 700°C by calcination. For the photocatalytic evaluation of these titanium dioxides, photocatlytic oxidation of organic model pollutant, humic acid, have been conducted. UV absorbance decrease by titanium dioxides prepared from both from TiCi4 and TiOSO4 at room temperature showed very similar results, compared to titanium dioxide prepared from TiCi4 at higher temperature.
High Density Formation of Iron Nanodots on SiO2 Induced by Remote Hydrogen Plasma
Authors: Zhang Hai , Fukuoka Ryo , Kabeya Yuuki , Makihara Katsunori , Miyazaki Seiichi
Published: August 2013

We have successfully formed Fe-nanodots with an areal dot density as high as ~2.4×1011 cm-2 on thermally grown SiO2 by exposing a 3-nm-thick Fe layer to a remote plasma of pure H2 without external heating. During remote H2 plasma exposure, the surface temperature rising up to ~500 °C was caused by surface recombination of atomic H, which enhanced surface migration of Fe atoms and promoted self-assembling nanodots. Electrical separation among Fe-nanodots was also verified from the changes in surface potential after charge injection using an AFM/Kelvin probe technique. The magnetic characterization by using magnetic force microscopy suggests that Fe-nanodots act as not only charge storage nodes but also spin-dependent active elements.
Preparation and Performance of Silver Coated Copper Powder
Authors: Sun Hong Peng , Wang Kai Jun , Cai Xiao Lan , Yue Gang , Chen Ya Guang
Published: August 2013

Different parameters are used to characterize the conductivity of copper powder with silver plating. Ethanediamine（C2H8N2） is employed to adjust the pH value of plating solution (solution A), and chelate Cu2+ generated by side reaction, forming sound five-membered ring structure with Cu2+, thus preventing the formation of Cu(NH3)42+ which can avoid adsorption of Cu(NH3)42+ on the surface of copper powder. In this way silver-plated copper powder with conductivity equal to fine silver powder can be obtained, the effects of dosage of C2H8N2 and Tollens' reagent concentration on performance of silver-plated copper powder have also been investigated. The result shows that dosage of C2H8N2 has significant effects on electrical conductivity of silver-plated copper powder. The dosage of C2H8N2 should ensure that pH value of control solution A maintains 9.0~10.0. The concentration of Tollens' reagent should make sure that the generated silver-plated copper powder is most even and continuous and tightness when silver particles in form of heterogeneous nucleation is surrounded on the surface of copper powder, , and the optimum concentration is 0.09mol/L. The conductivity of silver-plated copper powder made by Tollens' reagent with 0.09mol/L concentration is optimal, which is 3.9×10-4Ω•cm,when adjusting the pH value of solution A to 9.5 by C2H8N2 control.
Preparation of Fe3O4-Coated Microsilica Composites via Chemical Reduction Method
Authors: Feng Hui Xia , Chen Bai Yi , Zhang De Yi , Zhang Jian Qiang , Luo He Ming
Published: August 2013

Fe3O4-coated microsilica composites were synthesized by a novel method. The struction like precursor Fe3O4 nanoparticles as the shell and microsillica as the core for the composite has been prepared by chemical reduction method. The Fe3O4-coated microsilica composite presents a saturation magnetization value of 38.03 emu/g, which is sufficient to complete magnetic separation. The synthesized magnetic composites are characterized by X-ray diffractometer (XRD), transmission electron microscope (TEM) and vibrating sample magnetometer (VSM). The results indicated that Fe3O4 nanoparticles successfully coated on microsilica.
SiCp/7050 Aluminum Matrix Composite Made by High-Energy Ultrasonic and Two Steps Casting Processing
Authors: Zhang Li Hua , Jiao Fu Jun
Published: August 2013

In two steps casting processing, distribution of SiC particles gradually tends to be uniform with the increase of stirring time. The performance of composite improves gradually with the increase of ultrasonic processing time. Compared with the 7050 alloy, the composite after ultrasonic processing has the higher mechanical properties.
Studies on Magnetorheological Elastomers for Isolators
Authors: Yang Xue , Shuai Chang Geng , Yang Shen Lin
Published: August 2013

Magnetorheological (MR) elastomers are a new type of MR material. At present, most studies in this field are at laboratory stage, and practicability was rarely considered preparation of MR elastomer materials. Consequently, the existing materials with low overall properties cannot be applied in engineering. In this paper, the performance requirements for MR elastomers to be used in isolators were proposed. Then a type of practical MR elastomers for isolators was prepared, and its mechanical performance and MR effect were tested. The results show that the designed MR elastomers have high mechanical performance and high MR effect, and thus can be used in isolators.