bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Double Elements Co-Doping on Nano-TiO2 Photocatalysis of Rhodamine B Solution
Authors: Huang Su , Yang Li Zhen , Li Fu Yun
Published: September 2013

Hydro-thermal method was applied to synthesize nanoTiO2particles doped with metal and non-metallic elements. nanoTiO2particles were doped at different calcinations temperatures with S and Fe, Ce and La, respectively. X-ray diffraction results indicated that the minimum diameter of nanoTiO2doped with Ce and S was about 7.2nm, which is smaller than other type of double-element doped nanoTiO2. In addition, with the increase of calcinations temperature, the size of nanoTiO2particle increased and the diameter of nanoTiO2doped with Fe and S was the most obvious one. Rhodamine B was used to simulate the pollutant to analyze the photocatalytic property of doped nanoTiO2. The results indicated that the degradation rate of rhodamine B by nanoTiO2doped with La and S under the calcinations temperature of 450 °C reached66.22%.
Optimization of the Product of Strength and Plasticity of Hot-Stamped WHT1300HF High Strength Steel
Authors: Liu Kai , Chi Bo , Shi Zeng Min , Liu Ji Bin , Jian Li
Published: September 2013

The quenching and partitioning (Q&P) process was performed on high strength steel WHT1300HF at 250-350 °C for 30 to 90 s, respectively, for the improvement of its product of strength and plasticity (PSP). ε-carbide precipitation was observed in all the specimens partitioned at each temperature for different periods of time due to inadequate amount of Si in the composition of WHT1300HF steel. The volume fraction of retained austenite at room temperature in the partitioned specimens is extremely low due to the lack of carbon enrichment in untransformed austenite at the partitioning temperature as a result of the carbide precipitation. The decrease of tensile strength and increase of elongation are caused by the partitioning treatment, a maximum value of the PSP (17.6 GPa%) is achieved by partitioning at 300 °C for 60 s.
The Key Stamping Process Analysis and Mold Design
Authors: Wang Guo Lin
Published: September 2013

key production into mass production, the aluminum alloy material, including punching, blanking, two working procedure, precision parts, determine the first punch blanking, after adopting progressive die production. For mould design and calculation, and the convex model component and its structure, die components, positioning parts, unloading and push the pieces of parts to carry on the design, to complete the mold assembly drawing.
The Method of Optimal Phasor Measurement Unit Placement
Authors: Zhang Wen Jun , Xu Jian Jun , Xing Long
Published: September 2013

Taking the full network observability of power system and the least number of PMU as objective, to appearing fault situation in the grid, this paper proposes Differential Evolution and Particle Swarm Optimization (DEPSO) algorithm in view of the system failure rate. The improved DEPSO algorithm is global optimization, the algorithm takes the constraint condition of fault rate into account during the course of seeking optimal solutions. At the end, through the examples show that the algorithm compares with the existing optimization methods, which can reduce the number of PMU configuration and achieve completely observability of the system, at the same time, and stable operation of the system, through the simulation results verify feasibility and valibity of the algorithm.
Apricot Shell: A Potential High-Quality Raw Material for Activated Carbon
Authors: Zhu Gao Pu , Duan Jing Hua , Zhao Han , Liu Meng Pei , Li Fang Dong
Published: September 2013

To improve the utilization efficiency of apricot (Prunus armeniaca L.) plants, and increase products price, the activated carbon from apricot shell made by physical method was analyzed. The results showed that BET surface area is 866.0±21.5 m2/ g, hardness is highest that reached 95.0±2.7%, pH value is acidity. And the surface display granulated showed the resistance was higher. Iodine adsorption value is 1046±9.2 mg/ g, which closed to higher level with activated carbon from coconut shell. The methylene cyanine adsorption value is 11.0±0.6 mL/ 0.1g, etc. We conclude that the activated carbon from apricot shell mainly hotel was micro, second was middle hotel, and granulate surface was benefit for resistance when the noxious gas was adsorption at start stage. But in total, the activated carbon from apricot shell made by physical method, some defect such as BET surface areas was lower, and lack big hotel, so, the technology of upgrade quality need exploration.
Research of Three Dimensional Finite Element Simulation of Rail during Cooling and Pre-Bending Process
Authors: Li Bo , Zhu Guo Ming , Kang Yong Lin , Pei Nuan Nuan , Tao Gong Ming
Published: September 2013

In this paper, with the thermal mechanical coupled method and the whole rolling process simulation result using as the initial thermal field, the thermal field and deformation of rail during cooling have been simulated, then rail pre-bending process is proposed according rail bending deformation curve during cooling The results show that the bending curve formula fitting by rail cooling deformation curve is accurate comparing with the actual situation. Moreover, pre-bending process is set by fitting formula, and the rail recovers straightly after cooling.
The Force State Analysis of the Service Door on an Airliner
Authors: Fan Cheng Fei , Wang Yao Hua , Ma Rui , Duan Mian Jun , Chang Xing
Published: September 2013

The crew emergency evacuation security system is a life-saving device, the ultimate function of which is to save the life of the aircraft crew in a new regional airliner at high altitude. The system is used to push the service door with translational motion for a suitable distance. Before the system was started, the force state of the service door was got with the fluid mechanics knowledge. When the system was started, after a period of pressure relief time, the aircraft cabin pressure was calculated with the Bernoulli's Equation. The movement trajectory and the force state of the service door were obtained by the computational fluid dynamics theory and numerical simulation method. All of the above work must lay a theoretical foundation for the development of the crew emergency evacuation security system, and ensure the flight safety.
Research on the Floatability of Magnesite and its Gangue Minerals with Sodium Oleate and Lauryl Amine as Collectors
Authors: Yao Jin , Hou Ying , Wang Yu Lian , Zhong Wen Xing , Yin Wan Zhong
Published: September 2013

In this study, the single mineral flotation experiments of magnesite and its associated minerals including dolomite, serpentine, talc and quartz were conducted, and the influences of the dosage of collectors such as sodium oleate and lauryl amine, pH value and the influences of regulars such as sodium hexametaphosphate and sodium silicate on those minerals were researched. According to the results, a process to reduce the content of gangue minerals was proposed, which at first use lauryl amine as a collector to remove most talc and quartz and part of the dolomite and serpentine, and then use sodium oleate as a collector to separate magnesite from dolomite and serpentine. This is a theoretical reference for the beneficiation of magnesite.
Cavity Tool Path Optimization in High-speed Milling Based on NX CAM
Authors: Li Wei
Published: September 2013

This paper first mapped out a processing scheme of handle shell injection mould cavity, then carried out the manufacturing simulation of the cavity by making use of NX CAM, furthermore, it made an analysis to the phenomenon of the residuary materials left at the corner area when milling cavity in a high-speed. At last, the thesis proposed the best tool path optimizing strategy.
Simulation of Active Noise Control System on the Truck Interior Cab
Authors: LU Qi Chen , LI Hui Bin , Huang Hua
Published: September 2013

Studying on adaptive active noise control (AANC) system of the truck interior cab to reduce the low-frequency noise,a normalization FLMS algorithm simulink model is established in Matlab/Simulink.Then taking it as the core,a feedforward adaptive active control system and a feedback adaptive active control system of the tuck interior cab are established in Matlab/Simulink .Considerating the actual error channels effects on systems ,the noise reduction effects of two adaptive active control systems are verified from the simulintion results.Through comparing the two wo adaptive active control systems,we found that the feedforward adaptive active control system is more stable.
Trajectory Tracking Control for Micro Unmanned Aerial Vehicles
Authors: Zhai Rui Yong , Zhang Wen Dong , Zhou Zhao Ying , Sang Sheng Bo , Li Pei Wei
Published: September 2013

This article considers the problem of trajectory tracking control for a micro fixed-wing unmanned air vehicle (UAV). With Bank-to-Turn (BTT) method to manage lateral deviation control of UAV, this paper discusses the outer loop guidance system, which separates the vehicle guidance problems into lateral control loop and longitudinal control loop. Based on the kinematic model of the coordinated turning of UAV, the aircraft can track a pre-specified flight path with desired error range. Flight test results on a fixed-wing UAV have indicated that the trajectory tracking control law is quite effective.
Application of R Multiple Attribute Decision in the Air Defense Combat Deployment Scenarios Evaluation Based on TOPSIS
Authors: Yu Bo , Quan Ji Cheng , Wang Hong Wei
Published: September 2013

This paper mainly conducts multi-attribute evaluation for the deployment of air defense programs through TOPSIS method, quantifies multiple indices whose attributes are interval numbers in the deployment of air defense programs, and verifies the theory in four groups of experimental data. Compared with the actual situation, the proposed method is proved to be feasible.
Error Modeling and Analysis of Articulated Arm Coordinate Measuring Machines
Authors: Lu Jian , Gao Guan Bin , Yang Hui Ping
Published: September 2013

The Articulated Arm Coordinate Measuring Machine (AACMM) is a new type of non-orthogonal system precision instrument with the advantages of large measuring range, small volume, low weight and portability. To improve the measurement accuracy of AACMMs, an error analysis and calibration method for AACMMs is proposed. The kinematic model of the AACMM was established with D-H model, and then the error model of the AACMM was established on the basis of kinematic model with total differential transforming method and the singular value decomposition of Jacobian matrix and the decomposition of orthogonal matrix elementary row transform. Finally, the error model was validated by position error residual calculation. The error model provides a theoretical foundation for calibration and compensation of the AACMM.
Development of Desktop Virtual Maintenance Training System with Dynamically Configured Scenarios
Authors: Zhang Xue Cheng , Xu Rong , Liu Qi Xun
Published: September 2013

This paper represents an engineering method to develop a desktop-based interactive virtual maintenance training system, which could configure scenarios dynamically. The interactions of maintenance training scenarios are constructed by hierarchical Petri net. The maintenance knowledge and procedures of assembly/disassembly in virtual environment are presented by using high level Petri net. Each maintenance task is decomposed into a set of sequential basic action element done through left/right hand or both hands. The Petri net presentation of coordination and execution of each task helps to configure scenarios dynamically. This method is conducive to the interactive representation of task and action scenarios in the virtual maintenance training system.
Preparation and Characterization of Super Pure Coal
Authors: Cui Yong Mei , Xu Yong Quan , Hu Yong Qi , Yuan Zhong Kai , Li Li Ye , Zhang Zhao Xiang , Zhao Feng Yun
Published: September 2013

Industrial washing oil as solvent, super pure coal was extracted and prepared from raw coal using heat extraction technology. The structures of raw coal and super pure coal were characterized by thermogravimetry and Fu Liye infrared spectrum. The results showed that the heat extraction rate of super pure coal was decreased with the increasing of coalification degree. The ash of raw coal which were silicate and alumina can be concentrated by heat extraction technology into coal residue and the mixtures of various structure were mainly composed of aromatic hydrocarbons also can be extracted effectively.
Study on Network Security Audit System Based on Agent Technology and Log Mining
Authors: Wang Zhi Ming , Liu Min Xia , Hu Hui , Jiang Wu Xue
Published: September 2013

Aiming to increase network security auditing efficiency, an audit system with good efficiency has been generated through Agent and log mining technology. This paper improves the traditional association rule mining algorithm Apriori and designs a new data structure in which each brother node is in a parallel alignment, each child node has a pointer directing to their children node and sibling node, the audit system can only scan the database once. Experiments show that compared with traditional Apriori, the improved algorithm has greatly reduced the I/O expenditure of the system, having obvious superiority.
Correlation between Slurry Pore Former Content and Electrochemical Performance of Solid Oxide Fuel Cells with an Aqueous Tape Casted Anode
Authors: Hou Bing Xue
Published: September 2013

Nickel oxide/yttrium stabilized zirconia (NiO/8YSZ) anodes with different amounts of pore formers for anode used for solid oxide fuel cell have been prepared by aqueous tape casting technique. The zeta potential of NiO/8YSZ aqueous suspensions with and without dispersants was characterized. Moreover, the viscosity of NiO/8YSZ aqueous suspensions with different amount of dispersants and pore formers were studied by the concentric cylindrical rotational viscometer. The microstructures of the anode with different amounts of pore formers were also studied by SEM. The electrochemical performance of the single cell with different amounts of pore formers (modified by 0.8 wt% of polyvinyl pyrrolidone (PVP) over graphite) was evaluated between 700 and 800 °C with hydrogen as the fuel and air as the oxidant. It was observed that the maximum power density of the single cell with the optimum amount of graphite content (20wt%) measured was over 0.8 Wcm-2 at 800 °C and the area specific resistance value was as low as 0.79Ωcm2. The study allowed identifying optimum amount of graphite modified by PVP as the most promising pore formers for the production of supporting anodes prepared by aqueous tape casting for intermediate temperature solid oxide fuel cell application.
The Computer Network Optimization Model Based on Neural Network Algorithm Research
Authors: Wang Xun , Rong Jie
Published: September 2013

The speed of development of the computer network is an urgent need to comprehensively improve and optimize the overall performance of the network. Neural network algorithm has a massively parallel processing and distributed information storage, Hopfield neural network showed a unique advantage in the associative memory and optimization based on the neural network algorithm for computer network optimization model of Hopfield neural network theory and reality computer network, modern optimization methods, it is combined.
Design and Development of the Stability Test System for Gas Sensor Array Based on ARM
Authors: Zhou Tao , Zhou Qing
Published: September 2013

In order to eliminate or minimize the early instability of gas sensors, the aging process is needed. After aging,it is necessary to test stability parameters of gas sensors in a certain batch of the sensors for massive production. In this work, a system for the stability test of gas sensor array has been designed and developed both in hardware and software based ARM. Measurements demonstrate the quality and flexibility of it. It is low cost, excellent cost performance. The stability test system now works well in industrial applications and meets the need of industrial mass-production.
Improved PSO Algorithm Based MPPT Control under Partial Shaded Environment
Authors: Pan An Qi , Zhang Kai Ru , Chu Xue Jiao , Xing Cheng Cheng
Published: September 2013

In partial shaded environment, the power output of generation system which contains multiple sets of PV cells presented multi-peak characteristic. Traditional maximum power point tracking (MPPT) couldnt maximize the capability of PV array in the reason that they were likely to fall into local maximum point. MPPT control based on improved PSO algorithm can solve the accuracy problem of multi-peak output efficiency, as well as improve the maximum power point (MPP) searching speed through adaptive learning factors and inertia weight. Using Simulink and the mathematic model of single PV cell, the simulation model of PV array under different topology can be build. On this basis, the power output curves and regularities under various partial shaded situations can be obtained. Simulated the improved MPPT method in MATLAB, the superiorities was obtained by contrasting with existing MPPT methods in both MPP searching speed and accuracy.
Preparation and Characterization of Stable TiO2 Colloid Composing of Nearly Monodispersive TiO2 Nanocrystallite
Authors: Li Hong Liang , Fu Ai Ping , Wang Chao , Wu Yan Zi
Published: September 2013

Stable TiO2 colloids composing of narrow size distrubuted anatase TiO2 nanocrystals were prepared using quaternary ammonium hydroxide, such as Me4NOH, Et4NOH and Bu4NOH, as catalyst. TEM and UV-Vis spectra measurements showed that the TiO2 colloids are quite stable in air or under ultrasound irradiation and the size of the TiO2 particles of the colloids can be tuned by changing the molar ratio of Titanium isopropoxide and the organic additive. The additive can be removed when the dried gel were calcined at 450°C for two hours, resulting in pure TiO2 nanocrystal in anatase phase.
Design and Application of Book Information Retrieval System Based on B/S
Authors: Chen Shi Qang , Wu Bin Ying
Published: September 2013

B/S structure (Browser/Server) is one hide client mode after WEB development. This kind of network structure mode unifies WEB browser as the client-side in order to integrate the core part of system function realization to the server. B/S mode simplifies system development, maintenance, and usage. The client only needs one Browser under the B/S mode. The browser interact data with database through Web Server. This article introduces key techniques of B/S, designs and develops one book information retrieval system. The practical application shows the book information retrieval system based on B/S mode has the characteristics of easy maintenance, expansion and high availability. Through the system implementation, we can improve library utilization rate, and express the greater economic effectiveness and social benefit.
Software Design Based on PLD High-Speed Data Acquisition System
Authors: Zhang Geng , Xu Hao
Published: September 2013

Data collection in the important position of modern industrial production and scientific research is increasingly outstanding, as well as the real-time collection, real-time transmission and real-time processing of high speed data acquisition requirements are constantly improve. In addition, for different occasions, the data acquisition system of data sampling parameters are different. PLD as a universal integrated circuit, its logic function according to user's programming on the device, this paper introduces the high-speed data acquisition system based on PLD, mainly expounds the software design of the system, this paper introduces a simple PLD system, using FPGA as the data acquisition chip, the main measure the infrared remote control code acquisition, based on EDA technology to design a core, using DMA access to data, to achieve high-speed system requirements.
The Realization of Portable Ultrasonic TOFD Imaging and Detecting System
Authors: Wang Si Yuan , Zhao Xing Qun , Xia Ling
Published: September 2013

This paper introduced the design of a portable ultrasonic TOFD imaging and detecting system, and developed the hardware and application software based on embedded system. We accomplished multi-channel ultrasonic transmission and acquisition, real time A-scan signal or TOFD image display, ultrasonic data storage and analysis of large capacity and automatic quantitative calculation of cracks in this system. This system offered rapid speed and high accuracy that could be used to locate and size cracks in both weld joint detection and field structure examination.
The Empirical Analysis of Function-Call Graph
Authors: Guo Yang , Zhao Zheng Xu
Published: September 2013

The relationship of function calling is the core of understanding and maintaining software systems for engineers, but so far there have been so little studies concentrating on this aspect. In this paper we presented a comprehensive study of analyzing the software systems at the function level with complex network theory, expecting for providing guidance to the maintaining and controlling of systems. We selected a simple scripting language Lua whose code is in appropriate size for complexity analysis mainly in degree distribution and community detection, and found the heavy-tail and high clustering phenomenon.
Optical Investigations in Er3+/Yb3+ Co-Doped Nanostructured Phosphate Glass Ceramics
Authors: Yu Xiao Chen , Hao Ai Bin , Liang Shao Wei , Sun Zhong Wang
Published: September 2013

Er3+/Yb3+co-doped transparent phosphate glass ceramics were fabricated and characterized optically. The formation of nanocrystals is confirmed by x-ray diffraction. Stark split near infrared emission peaks of Er3+have been observed in the glass ceramics, and the effective bandwidth increases with increasing annealing temperature. Upconversion emissions of Er3+in the glass ceramics under 975nm wavelength excitation, especially in the green wavelength region, are enhanced. The results can be attributed to the enhancement of ligand field due to incorporation of Er3+ions into the crystal lattices.
Trim and Transplantation of Linux Kernel Based on ARM
Authors: Zhao Ming Xin
Published: September 2013

This paper mainly researches trim and transplantation of the Linux kernel at the platform of ARM.Transplantation of operating system can be done in the following steps: configuration, trim of source code, cross-compilation. This paper make a detailed description about items above,and the realization of it. Transplantation of operating system is the base of embedded system,so it has a important significance on development of embedded system.
Application of Fuzzy Mathematical Method in Insulator State Inspection
Authors: Rao Xue
Published: September 2013

Insulator pollution flashover can bring about great damage to electric power system. At present, experimental results evaluation system is needed by all practicable and efficient methods for insulator state inspection, such as leakage current method, pulse current method, UV detection, and visible light analysis method. This thesis focused on the evaluation theory and implementation method of fuzzy mathematical method to insulator state inspection results. In addition, it introduced several basic methods, as well as the definition and rules of fuzzy mathematical method, and then proved the possibility of realizing this evaluation system.
A Color Image Watermarking Algorithm
Authors: Tan Xiu Hu
Published: September 2013

Transparency and robustness are two conflicting requirements demanded by digital image watermarking for copyright protection and many other purposes. In this paper, a robust and transparent watermarking scheme for color images is proposed. The color features for the human visual system are utilized to design the color watermarking algorithm. The basic idea is to embed the invisible watermark into the color image by brightness adjustment and feature component choice. And through analysis and constraint the conditions, we can obtain a high detection probability and security, a low false alarm probability. In the same time, because we use different matrix operation to embed (secret key) and extract (public key) a watermark, we are able to release all information for the public, except the secret key. Our method can extract the embedded watermark without reference image. The robustness of our method is demonstrated by various attacks through computer simulation.
Image Fusion with Sparse Representation
Authors: Li Hong , Zhang Jin Ping , Wu Fen Xia , Tan Cong E
Published: September 2013

Sparse representation is a new image representation theory. It can accurately represent the image information. In this paper, a novel fusion scheme using sparse representation is proposed. The sparse representation is conducted on overlapping patches. Each source image is divided into patches, and all the patches are transformed into vectors. Decompose the vectors into theirs sparse representations using orthogonal matching pursuit. Sparse coefficients are fused with the maximum absolute. The simulation results show that the proposed method can provide high-quality images.
Dynamic Encryption Lock Used for Matching Random Signals by Algorithm Program
Authors: Liu Yu
Published: September 2013

This project aimed to make a research on code lock containing algorithm and dynamic random code based on the existing intelligent lock. This code lock can control the door lock through software program, which was to draw random digit into MD5 program of single chip microcomputer, allow the same data being processed by MD5 encryption program to present different results, such that, the encryption program can keep dynamics, so the MD5 encryption program being amended by pseudo-random number existed separately in key and lock, then this program would be the identity card for key to open the door and only the program of key was identical with that of the lock can the door open, which largely improved the safety.
Analysis and Implementation of ASP.Net and PHP Frameworks Based on MVC Architecture
Authors: Liu Xiao Kang , Cheng Geng Guo
Published: September 2013

Information transmission in the network is more and more accepted due to the fast and convenient of the network access. The MVC (Model-View-Controller) could be a very good solution to solve the problems as separating between user interface logic and business logic that developers found. We describe and explore ASP (Active Server Pages), PHP (Hypertext Preprocessor) and robustness analysis method, and we implement MVC architecture in ASP.Net framework and PHP framework respectively. With the comparison between ASP.Net framework and PHP framework, in this study, our findings show that PHP framework is more difficult than ASP.Net framework to implement MVC architecture, and the ASP.Net framework is better than PHP framework under the same environment.
An Data Replication and Deletion Algorithm for Web Objects
Authors: Kang Yan , Wang Zhong Min , Zhang Yi Fan , Lin Ying
Published: September 2013

The phenomenal growth of the object has brought huge increase in the traffic on World Wide Web. Long read latency of service experienced by the end-users, especially during the peak hours, continues to be the common problem to the popular web servers while retrieving popular objects. A replication and deletion algorithm is presented to solve object replication problem, which is a NP-hard problem and can be formulated as a 0-1 constraint optimization problem. The algorithm defines an appropriate replica distribution with the objective to decrease the number of object access operations over excessive distances, balance the load of popular web servers, and then minimize the network traffic of the object. Object deletion in a distributed web-server environment is one of the possible solutions to extend available memory and reduce the load of the server. During the adaptive time period due to different object update frequency, objects are dynamically duplicated and deleted in a distributed web server system with limited storage capacity. Simulation results demonstrate the performance of the proposed algorithm.
A Video Coding Algorithm Based on Improved Wavelet Coefficients Block
Authors: He Yu , Xiu Chun Di
Published: September 2013

3D-SPIHT algorithm extends 2D-DWT to 3D-DWT and encodes the subsequent coefficients, which is a research hotspot in very low bit rate coding and data compression. This paper reorganizes the 3D-SPIHT coefficients with block structure, and puts forward the 3D-BSPIHT algorithm which can represent an insignificant block which contains four wavelet coefficients with one bit in order to improve the compression efficiency. This algorithm increases average PSNR by 0.2dB at most in comparison with 3D-SPIHT algorithm and decreases the computational complexity especially at low bit rate.
Design and Implementation of News Summary Based on Meta Search Engine
Authors: Zhang Yong Hua , Wang Chao
Published: September 2013

The relationship between the meta search engine and independent search engine is presented. The news information searched by the independent search engine is not accurate and complete. After researching the technology of summary generation and meta search engine, summary generation algorithm is improved, the news summary based meta search engine system is put forward and the realization of it is expounded. Experiment showed the summary created did well in readability and coverage, and enhanced the precision.
The Research on Chinese Automatic Segmentation
Authors: Li Huan Qin , Yan Shi Tao
Published: September 2013

Abstract. Word Segmentation is a fundamental problem of the Chinese natural language progressing. Based on the analysis of the state on research and key issues of it .The paper introduces a tree structure statistical method of word frequency, which enables key words to match one another highly-efficiently. by which we can rapidly express texts as the set of high-frequency words,so the classification of texts is conveniently reached.
Homology Modeling of Aeromonas hydrophila Laccase and its Molecular Docking with the 2,5-Xylidine
Authors: Du Dong Xia , Shan Shi Ping , Zhang De Yuan , He Yue Lin
Published: September 2013

Laccases belonging to multicopper oxidase family oxidize a broad range of reducing substrates, especially industrial effluents-derived polyphenols, which causing major effect on human health as well as environment. In order to investigate the molecular mechanism of interaction between laccase and its substrate, it is a good idea to analyze three-dimensional structure of laccase. Based on crystal structure ofEscherichia colilaccase CueO, the three-dimensional structure ofAeromonas hydrophilaLaccase (Ah-lac) was constructed by homology modeling and further evaluated using PROSA energy and ERRAT. The substrate binding site in Ah-lac was predicted and the binding mode of 2,5-Xylidine as a putative ligand to Ah-lac was presented using molecular docking. The residues of Met378 and His382 in the binding pocket are responsible for the interactions with 2,5-Xylidine via two hydrogen bonds. The two residues could be important for substrate recognition.
A Review for Granular Media
Authors: Yang Ji Ye , Zhao Yu
Published: September 2013

This is a review on the kinetic theory of granular media. In this paper, we discuss the main model for the granular media from the mathematic point, and the main results on this subject.
VISC Application in Securities Technology Analysis Teaching
Authors: Wang Pin , Huang Hai Ping
Published: September 2013

Based on the analysis of current teaching situation for securities technology analysis, this article pointed out the problems in securities technology analysis teaching and their reasons, and discussed the necessity of applying the VISC technology in teaching practice. In combination with the characteristics of securities technology analysis, the four-step method of VISC was used to originate the similarity graph and its specific application implementation in securities technology analysis teaching, and through the teaching practice, it validated the significant effect on the theoretical teaching and skill teaching of securities technology analysis caused due to the applications of VISC.
Models Research of Enterprise Logistics Cost Control
Authors: Fan Zhi Guo , Du Ping
Published: September 2013

Through review domestic Enterprise logistics cost control, several important control models were identified, including the model based on the accounting methods, the model based on the supply chain management, the model based on the strategic management, and several others. Based on analyzing the characteristics and the limitations of the existed research, the future research direction was discussed.
Research on the Current Situation of the Efficiency Evaluation of Logistics
Authors: Bi Xiao Qing , Li Xin
Published: September 2013

The efficiency evaluation of Logistics plays a fundamental role in improving the efficiency of Logistics enterprises. Performance assessment of logistics research is richer article on the logistics performance of the research than the evaluation of logistics enterprises efficiency. It is analyzed in the existing literature of the sort from two aspects: evaluation objects and methods. Then, find out the characteristics and limitations of existing research systematically, in order to providing a reference for future studies.
Research on the Relationship between Supportive Human Resource and Employees Innovative Behavior in Service Industry
Authors: Bi Xiao Qing , Wang Jing
Published: September 2013

The study tries to verify relationship between supportive human resource practices (SHRP),positive emotion and service employee innovation behavior via questionnaires,through spss analysis,the results show that: positive emotions is important variable that affect service Employees innovation behavior;growth opportunities and training,performance evaluation,participation and job security all have a positive role in promoting innovative behavior,but welfare is not;positive emotions play a fully mediating role in performance evaluation and innovation behavior,play part mediating role in growth opportunities and innovation behavior, employment security and innovation behavior.So Enterprises should enhance management in employee training,employment security,performance evaluation which make employees more willing to innovate.
Research on Logistic Path Planning Strategy Based on Coarse-Grained Parallel Genetic Algorithm
Authors: Jiang Wu Xue , Hu Xuan Zi , Liu Min Xia , Yin Peng Fei
Published: September 2013

In order to minimize the precocity and deceit happened in genetic algorithm, this thesis puts forward an improved intelligent evolutionary algorithmcoarse-grained parallel genetic algorithm which proposes schema order based cross operator, task immigration based cross operator, and improved approach for elitist strategy. Also, this paper applies the algorithm into logistic route planning system to clarify the concrete implementation steps for coding, population generation and genetic operator. According to experiment result, the improved algorithm mentioned in this assay have advanced the convergence rate and optimizing ability to some extent.
Comprehensive Evaluation of Performance in Logistics Service Supply Chain Based on the Entropy Method and Gray Analysis
Authors: Li Rui , Duan Kai Yan
Published: September 2013

Logistics service supply chain is a new kind of supply chain which is based on integrating management and developed with the development of logistics service industry, so it is able to ensure the logistics operation of product. In terms of the performance evaluation in logistics service supply chain, the paper developed an index evaluation system based on the analysis of research status at home and abroad and the characteristics of logistics service supply chain; did comprehensive evaluation of performance in logistics service supply chain based on entropy method and gray analysis; the numerical example indicated that the comprehensive evaluation of performance in logistics service supply chain can help logistics enterprises improve the quality of their logistic service and offer reliable data for the selection of third logistics enterprises.
Research on Optimizing Reverse Logistics Network of Waste Copper Recycling
Authors: Hao Qi , Xu Xin Sheng , Liu Qing , Liu Xi Ze
Published: September 2013

Based on third-party logistics, we propose a linear programming mathematic model for reverse logistics networks of waste copper recycling. And, a reverse logistics network models is established to deal with returned products, which will decrease costs and allow optimal decisions on distributing methods so as to increase efficiency and profit levels. A case study is also developed to illustrating the value of this model and network. Whats more, according to the model, we put forward to sincere suggestions and better measures of copper scrap recycling.
Study on Supply Chain Oriented Service Quality Evaluation of E-Commerce
Authors: Tong Yang , Liu Qing , Jiang Hai Qing
Published: September 2013

Quality has been attracting growing attention after entering the 21st century. The paper studies the service quality of supply chain based on the SERVQUAL model by the adoption of fuzzy comprehensive evaluation method in the light of working out the service quality level in the eyes of customers, which may consequently improve the service quality of the supply chain as well as of e-Commerce Website.
Study on the Infrared Property and the Structure of Schorl Calcined at the High Temperature
Authors: Luo Ting , Gu Xing Yong , Wu Jun Ming
Published: September 2013

The iron-rich schorl was took as the research objects in this paper and the high temperature phases transformation of the schorl were discussed. The preparation and infrared properties of the schorl glaze, of what is the melting temperature lower than 800°Cwere studied and also the law of improving water quality by the schorl glaze were tested and analyzed. The results showed that the schorl can be decomposed into mullite and iron oxide when the temperature higher than 800°C; the far-infrared emissivity of the glaze prepared by the schorl mixed with more than 40wt% low temperature frit reached 0.885; the property of schorl glaze is weaker than the material supported on porous ceramics modified by schorl in improving water quality (pH value).
Optimization of Enzyme-Assisted Lycopene Extraction from Tomato Processing Waste
Authors: Zuorro Antonio , Lavecchia Roberto
Published: September 2013

We have investigated the recovery of lycopene from tomato processing waste (TPW) by treating the peel fraction of the waste with pectinolytic and cellulolytic enzyme preparations. To optimize the enzyme-assisted extraction, we used a two-level factorial design with five factors: extraction temperature (T), pretreatment time (P), extraction time (E), enzyme solution-to-solid ratio (R), enzyme load (L). A 7-to 16-fold increase was observed in lycopene recovery, compared to the untreated TPW. From a response surface analysis of the data, a second-degree polynomial equation was developed which provided the following optimal extraction conditions: T = 30 °C, P = 3.5 h, E = 3.2 h, R = 30 dm3/kg, L = 0.17 kg/kg.
Study on the Influences on Microstructure and Properties of High-Strength Grey Cast Iron in Addition to Alloying Elements Nb
Authors: Zhang Jun Tao , Ren Feng Zhang
Published: September 2013

The increase of the strength of gray cast iron is mainly depended on alloying. However, with the improvement of strength, its processing performance will always decrease. So three different gray cast irons are studied in this experiment, including adding 0.1% Nb elements, adding 0.2% Nb elements and adding 0.3% Nb elements, to investigate the Nbs effect to the mechanical performance of gray cast iron, we adopt Dynamic Strain Amplifier to measure cutting force to evaluate processing performance, use Optical Microscope and Electron Microscopy observe each samples organization, explains the relationship between Nbs content and the mechanical and processing performance of gray cast iron from micro-level. Finally, we draw the conclusion: when the Nb comes to 0.3 percent, the appearance of E-type graphite and Nb carbide durum granular will greatly decrease its processing performance.
Finite Element Analysis on Connecting Rod Fracture Splitting with Abaqus
Authors: Chen Jie Ping , Qiao Yin Hu , Feng Wu Tang , Guo Wan Shan
Published: September 2013

Connecting rod fracture splitting is a novel connecting rod big end separation precision machining technology. It has become one of the critical technologies in engine production in developed countries. By studying and analyzing the splitting process theory, affecting factors on splitting quality and the expansion force ratio, finite element analysis was conducted by using modern engineering software. Upon design and fabrication a testing device, lots of experiments were carried out. Experiment results show, the study method is effective, the splitting quality can be obtained by homemade equipment. The same equipment can be used for varying temperature and different material splitting analysis in the future.
A Novel Green-Emitting Phosphor: LiLa2BO5:Ce3+,Tb3+ with High Luminescence Efficiency
Authors: Fu Yin Rong
Published: September 2013

Novel Ce3+ and Tb3+ co-doped LiLa2BO5 phosphor, synthesized by a solid state reaction in reductive atmosphere, exhibits enriched emission spectrum in the green region .The XRD patterns, photoluminescence spectra and SEM were recorded and the effects of Tb3+ and Ce3+ concentration, sintering condition on the luminescent properties of as-synthesized phosphors were investigated. The emission spectra under ultraviolet (200--350 nm) radiation showed a dominant peak at 544 nm attributed to the 5D47FJ(J=0,1,2...6) transition of Tb3+, which was greatly enhanced by the co-doping of Ce3+, indicating that there occurred an efficient nonradioactive energy transfer from Ce3+ to Tb3+. The experimental result shows that the optimum Ce3+ and Tb3+ doping concentrations are 15 at% and 10 at% respectively.Keywords: Green phosphor; High luminescence efficiency; LiLa2BO5:Ce3+,Tb3+ ; Rare earths
The Effects of Small Additions Ga and Al on the Microstructure and Tensile Properties of Sn-Zn Based Lead-Free Solders
Authors: Chen Kang I , Cheng Shou Chang , Cheng Chin Hsiang
Published: September 2013

The melting temperature, microstructures, and mechanical properties of the Sn-Zn-0.5Ag-0.5Ga, Sn-Zn-0.5Ag-0.45Al and Sn-Zn-0.5Ga-0.45Al lead-free solders were investigated. The results indicate that the addition of 0.5 wt% Ag to the Sn-Zn based alloys destroy the eutectic structure and results in the formation of Ag-Zn compound and hypoeutectic structure. The variation in the microstructure lowers the UTS. By the addition of Al the UTS and elongation of the 0.5Ag-0.45Al alloy can be decreased due to the Al diffused to the interface of the Ag-Zn compound/Sn-Zn eutectic structure to form Al-Zn compound. The 0.5Ga-0.45Al alloy shows a typical eutectic structure with the light contract β-Sn and the darker needle-like phase, as well as a small amount of Al-Zn phase with a near diamond shape. Gallium uniformly distributes in the Sn matrix and Zn rich phases. The 0.5Ga-0.45Al solder had the highest UTS and elongation, while 0.5Ag-0.45Al had the lowest UTS and elongation. The results indicate that Ga and Al exhibits prominent influence on the microstructure as well as the mechanical properties of the solders.
Artificially Induced Defects in Photonic Crystals and their Optical Properties
Authors: Li Juan , Yang Hu , Zhao Yong Qiang , Li Chao Rong
Published: September 2013

An efficient approach for fabricating three-dimensional (3D) photonic crystals (PCs) embedded defects via lithography was introduced. The resulting structures of plan view and cross-section of 3D PCs are characterized by field emission scanning electron microscopy. Ultraviolet-visible transmission spectra show their optical properties. The 3D PCs embedded defects change the center wavelength of photonic band gaps (PBGs) in original PCs, which can be applied in modification and control of the diffraction properties for optical devices.
The Magnetic Properties of Fe-6.5wt.%Si Alloy Powders Produced by High Pressure Gas Atomization
Authors: Xie Ke , Song Chang Jiang , Li Ke Feng , Zhu Liang , Zhai Qi Jie
Published: September 2013

The soft magnetic properties of Fe-6.5wt.%Si alloy powders produced via high pressure gas atomization under different powder sizes, environments (atmospheric and vacuum) and heat-treatment were presented by vibrating sample magnetometer (VSM), respectively. It is found that the soft magnetic properties of powder gradually grow up as the increasing of the powder size under atmospheric and vacuum environments. However, the using of vacuum environment has an optimal capacity to strengthening the properties rather than atmospheric environment. The heat-treatment of 1000°C for 2 hours offers considerable potential for improving the soft magnetic properties of the powders.
Study on the Run-in Process between the Contact Line and Saddle of High-Speed Rail
Authors: Song Lian Mei , Jia Li Xiao
Published: September 2013

At present the wear and friction of pantograph-contact line is studied widely, while the research of the run-in process is little. In the paper they are obtained that the contact area is 0.96mm2, contact stress is 73MPa, current density is 520A/mm2, the contact resistance is 0.01583 and the contact temperature is 2797K on the surface of slide during the run-in period by the theory calculation. The high temperature of slide surface leads to the oxidation damage. While the carbon film comes into being and the friction surface is tending towards stability.
Effect of Hydraulic Classification on Iron Ore Tailings Preparing High Strength Construction Materials
Authors: Wu Hui , Ni Wen , Wang Chang Long
Published: September 2013

The aim of this study is to understand the effect of hydraulic classification on the iron ore tailings, and develop the cementitious activity of tailings to prepare construction materials. It was indicated that hydraulic classification can effectively divide the particulates of tailings into coarse and fine powders. The compression strength of the prepared construction materials are 87.83 MPa at 28 days, which have higher strength than the construction materials using original tailing, The variation in the tailings samples after hydraulic classification and the cementitious material after step-milling was characterized by sieve analysis, complete chemical analysis, scanning electron microscopy (SEM), and the particles size distribution. By mechanical properties testing and microstructure analysis shows that after hydraulic classification of tailings under the same conditions, the strength of the 3 days, 7 days, 28 days are higher than that of the original tailings. The main phases in the system are the rod of ettringite and low crystallinity or the amorphous C-S-H gel, and residual Ca(OH)2.
Force Analysis of Steel Column Base Plate Base on the Interaction Principle
Authors: Zhu De Bin , Hao Sun
Published: September 2013

This paper analyse the force of the column base plate which suffering the axial pressure. First, the comparative analysis between the traditional model and interaction model is made. Second, for the steel frame, sole plate and concreat base as a entirety, analyse the factor which affect the stress distribution of sole plate and base top at the different working condition. Result shows that, there is a big gap on the result between the traditional model and interaction model, difference of length-wide ratio of box column section have a small affect on the stress of base top. The change of concreat strength have a big affect on the sole plate and concreat stress distribution.