bluuebunny/crossref_metadata_2025 huggingface dataset:
Dynamics System Simulation Study of Locking Mechanism for Aviation Aircraft Based CATIA and ADAMS
Authors: Liu Xia , Shan Ning , Liu Tuan Jie , Hu Xue Yan
Published: October 2013

Locking mechanism of aviation aircraft is very important for perform mission. In order to avoid motion interference of locking mechanism efficiency and ensure mission completion and flight safety, its motion interference is analyzed based on its working theory. The spatial distribution of locking mechanism is designed in reason. The 3D solid assembly model of locking mechanism is constructed by using CATIA software. By the seamless interface program Sim-Designer between CATIA and ADAMS, dynamics simulation of locking mechanism system is realized in the circumstance of ADAMS. Its motion law is studied through simulation under the loading condition. The results show that there are good coincidence between simulation results and theoretical calculation datum. The method has more practicability and reasonability for the dynamics study of locking mechanism. And it offers theoretical basis for design and use of locking mechanism.
Opened Performance of Hydraulic Support Electro-Hydraulic Valve Test Bench Design
Authors: Zhang Xi , Wang Yan Yan , Cui Ya Bin , Yu Miao , Zhao Zhi Min
Published: October 2013

A new performance test system is presented in this paper, as we all known, hydraulic support is the most important equipment in mechanized coal mining. Electric hydraulic valve, as the key components, consist of electromagnetic pilot valve and mechanical valve bodies. When electromagnetic pilot valve hasnt enough driving force, precursor core wont work normally. The test stand can measure relationship between displacement and force of electromagnetic pilot valve. First of all, electric hydraulic valve is introduced simply, then detailed designing process. The test Bench includes measurement and control system, as well as working theory.
Research on the Maintainability Analysis and Design for Artillery Projectiles
Authors: Zhou Xiao Dong , Gao Xin Bao , Du Xi Ling
Published: October 2013

Unlike any other ordnance, the maintainability of artillery projectiles is ignored from the design and production period to launching and exploding period. In this paper, the necessary feasibility of maintainability analysis and design for artillery projectiles are described thoroughly and demonstrated adequately. The disadvantage will be overcome thoroughly which is difficult to maintain for new projectiles, especially for costly projectiles, with applying the conception of maintainability of artillery projectiles to the course of argumentation, design, and production of artillery projectiles so as to improve the reliability of ammunition and strengthen the tactical efficiency of armed forces.
Improved Design of General Layout on Wide Format Thermal Transfer Printing Equipment
Authors: Sun Hai Ming , Deng Qun Lin , Jing Jin
Published: October 2013

The wide format thermal transfer printing equipment (WFTTPE) was used for producing banners in advertising. The general layout and structure of WFTTPE were introduced and analyzed. The left box and right box have been reduced to decrease occupied areas in improved layout. The discharge smoke module has been added to reduce harmful smoke. Bearing block and bearing have been moved to the left side of support plate to dismantle easy. The location of DC motor, main control circuit board, storage battery, control panel and equipment nameplate have been adjusted with new layout adjustment of WFTTPE. The result showed that the occupied areas of WFTTPE had been reduced by one-third, and the concentration of indoor harmful smoke has been reduced by two-third. The actual applications showed that the lifetime of T6214 bearing could reach 12 months at least while the 61914 bearing lost efficacy mean three months.
Rearview Mirror Product Design Based on Reverse Engineering Technology
Authors: Zhang Xin , Wang Shan Shan
Published: October 2013

Product design is successful or not, not only from the aspects of design concepts, ideas, manufacturability, cost and benefit considerations, the most important depends on the customer satisfaction after products is throw on the market. Many products only from the point of view of design are impeccable, but the user feedback is not good, in order to meet the demands of the market need, you need to constantly improve and innovate. For a certain brand rearview mirror product user feedback, the design of crank connecting part curvature has been modified using reverse technology.
Conceptual Product Design Methodology through Functional Analysis
Authors: Romli Fairuz I. , Rafie Azmin Shakrine Mohd , Wiriadidjaja Surjatin
Published: October 2013

Due to high competitive nature of todays product market, it is essential for conceptual design architecture solution to be derived faster while still maintaining a certain level of innovation to differentiate it from other competing products. This can be a handful task for the development of complex product designs with the current geometrical-based approaches due to plethora of possible physical alternatives to be considered. The search for product design architecture solutions from its functional requirements is more effective as the functional space is comparatively smaller than the physical search space. This allows the design and development effort to be more focused and saves time and resources. With this notion, there is a driving motivation to adapt the functional approach into the conceptual design process to exploit some of its benefits. In this paper, a methodology to derive the product architecture solution from functional approach is discussed and proposed.
Research of Fuzzy Cost Model for Selective Disassembly Planning
Authors: Zhou Zi Qiang , Dai Guo Hong , Wu Zhao Ren
Published: October 2013

In order to protect environment, the end-of-life product should be disassembly and recycled. While selective disassembly method can be used to separate the valuable parts from the old product and used for reuse or remanufacturing. Usually there are several feasible disassembly sequences for operation; the optimal sequence is decided by operation cost. A fuzzy cost model is presented instead of the traditional quantitative cost model. The advantage of this method is that the detailed information of the end-of-life product is not needed and, the practical feasibility of selective disassembly is improved.
Ergonomics Simulation and Application in Production Assembly Line
Authors: Liu Jin Fei , Chen Ming
Published: October 2013

In order to avoid the ergonomic issues in the early planning stages of production line, and to achieve a more satisfactory planning and design, the ergonomic simulation is particularly important in the study of digital production line planning. An ergonomics analysis methods was presented making use of these two theory of OWAS and BSHA. The process of ergonomics analysis and simulation was discussed based on the platform of Process Simulate & Process Designer. Finally, take an example, how to consider the ergonomics problems in production line planning was introduced to make a better choice between different production line planning schemes.
Design and Implementation of Authentication Server with High Concurrency
Authors: Xiong Qi , He Xiao Feng , Tang Jie
Published: October 2013

With increasing problems of network security, a server with high concurrency is designed here to deal with identity authentication. In the general design of the server, RSA and DES algorithm are used. RSA algorithm is used to encrypt or decrypt users identity information. DES algorithm is used to ensure the information will not be stolen. In order to ensure the server has high concurrency, the technology of epoll and thread pool is applied to design the server in the Linux system. In the end , integration testing and stress testing are performed to test its reliability and stability. The testing result shows that the server can run properly under heavy concurrent load.
A Searching Algorithm for Path Test Data Generation
Authors: Jia Li Min , Li Na , Chen Zhuo Yi , Guo Wei
Published: October 2013

Test data generation is key of software testing. Test data methods based on program executing overcomes the problem that static methods limit tested procedure, which shows some advantages, but program executing methods need support of searching algorithm. This paper presents the searching algorithm based on dynamic data, it judges speedily adjustment rang of variables of tested procedure, does not try to search step by step and improves efficiency of test data generation..
Convergence of Wavelet Expansions at Generalized Continuous Points
Authors: Zhao Shu Gai , Tian Gen
Published: October 2013

Convergence of wavelet expansions of a function f at generalized continuous points is discussed. By approximation method, its proved that the wavelet expansions of f converge to the mean value of the left and the right limits of f at a generalized continuous point. As an application, the result that the wavelet expansions of a function f converge at a continuous point is generalized.
The Application and Development of the Internet of Things in Intelligent Buildings
Authors: Ji Shou Wen , Teng Hui Yun , Su Jian Feng
Published: October 2013

The Internet of things (IOT) technology leads the third wave of the information industry having broad application prospects in intelligent building. This paper briefly introduces the background and concept of the IOT, the basis of the integration of intelligent building and the IOT. Intelligent building automation system, safety system, fire alarm system and OA system are the main applications of the IOT in intelligent building. We illustrate the disadvantage of traditional intelligent building and propose that the IOT and intelligent building have a good basis for integration. At the end, this paper analyzes the relationship between green building and intelligent building. The ultimate development goal of them is green building and smart city. It will make a huge impact in people's normal production and life in the future.
Research the Influence of Entrepreneurs' Cognition on Dynamic Capability Based on Resources Restriction
Authors: Zhu Xiao Qin , Du Zhao Hui
Published: October 2013

This paper analyzes the relationship between the resources restriction, the entrepreneurs' cognition and the dynamic capability, and using the market research and the structural equation model to test them, it is found that entrepreneurs' cognition of three aspects: namely, environmental alertness, enterprise internal cognition and metacognitive ,which have significant positive influence on dynamic capability, the influence of the environmental alertness on the dynamic capability is the largest among them. At the same time, the resources restriction plays a significant role of regulation for the relationship between entrepreneurs' cognition and dynamic capability.
On the Dynamical Properties of the Sun-Earth-Moon Restricted Four Body Problem
Authors: Zhang Yun Yan , Li Nan , Li Yan Jun
Published: October 2013

The properties of the sun-earth-moon restricted four body problem were investigated. On the base of the earth-moon circular restricted three body problem, taking gravitation effect of the sun into account, a dynamic model of restricted four body problem was established. Equilibrium points were calculated by proper numerical method and linearization procedure was introduced to obtain the stability of these points. An invariant integral relation of this four body problem similar with Jacobi integral was derived, then the Hill region was investigated. Calculation results show that the equilibrium points will keep moving near libration points, also has their stability unchanged, and the Hill region will be non-periodically time varying.
Preparation and Electromagnetic Properties of CIP/SiO2/PANI Composites
Authors: Wang Ming Ming , Zhang Zhong Lun , Hao Wan Jun , Hou Guo Yan , Xin Zhi Jun , Wu Fan , Yi Ying Ying
Published: October 2013

CIP particles first were coated with SiO2 shell by the Stober process , then grafted the polyaniline by in-situ polymerization to prepare CIP/SiO2/PANI core-shell composites. The CIP/SiO2/PANI composites are composed the dielectric loss properties with the the magnetic loss properties, the morphologystructure and electromagnetic properties are characterized by SEMXRD and vector network analyzer, respectively. It is observed that SiO2 and PANI are on the surface of CIP particles, XRD patterns further confirm that the CIP/SiO2/PANI composites are synthesized successfully, and that interaction between components exist in the polymerization. In comparison with CIP, the complex permittivity of CIP/SiO2/PANI composites have certain enhancement in 2-18GHz frequency range, but it has a very small impact on the complex permeability.
Construction of the Air Offensive Operation Battlefield Support System Based on the Internet of Things Technology
Authors: Sun Zhao Fu , Ma Xin , Sun De Xiang
Published: October 2013

The air offensive operation battlefield support is characterized by informationized command, advanced measures and precise material support. Aimed at these characteristics, combined with the features and characteristics of the Internet of Things, the Internet of Things technology is integrated into the battlefield support system, and the battlefield support command system, battlefield awareness system and battlefield material support system based on the Internet of Things technology are established. This paper is significant to the study on the construction of the air offensive operation battlefield support system that adapts to the complex battlefield environment.
Software Design of Quartz Crystal Test and Sort System
Authors: Wang Yu , Li Dong , Wang Yan Lin
Published: October 2013

The demands for quartz crystal become bigger and bigger in electronic market. A software system of quartz crystal test and sort was designed. The application program of software system was written based on VS2008 platform. The system used 250B to test parameters of quartz crystal, read sensor values and send control command to peripheral actuators through PCI interface. The sorting results can be obtained by comparing test results with threshold values. According to the sorting results, the peripheral actuators were driven to work, make quartz crystal sorted into the correct sorting box. Experiments show that the software system can complete testing and sorting of quartz crystal.
Integrated Lean Six Sigma Approach for Patient Flow Improvement in Hospital Emergency Department
Authors: Al Owad Ali , Karim M.A. , Ma Lin
Published: October 2013

Because of increased competition between healthcare providers, higher customer expectations, stringent checks on insurance payments and new government regulations, it has become vital for healthcare organisations to enhance the quality of the care they provide, to increase efficiency, and to improve the cost effectiveness of their services. Consequently, a number of quality management concepts and tools are employed in the healthcare domain to achieve the most efficient ways of using time, manpower, space and other resources. Emergency departments are designed to provide a high-quality medical service with immediate availability of resources to those in need of emergency care. The challenge of maintaining a smooth flow of patients in emergency departments is a global problem. This study attempts to improve the patient flow in emergency departments by considering Lean techniques and Six Sigma methodology in a comprehensive conceptual framework. The proposed research will develop a systematic approach through integration of Lean techniques with Six Sigma methodology to improve patient flow in emergency departments. The results reported in this paper are based on a standard questionnaire survey of 350 patients in the Emergency Department of Aseer Central Hospital in Saudi Arabia. The results of the study led us to determine the most significant variables affecting patient satisfaction with patient flow, including waiting time during patient treatment in the emergency department; effectiveness of the system when dealing with the patients complaints; and the layout of the emergency department. The proposed model will be developed within a performance evaluation metric based on these critical variables, to be evaluated in future work within fuzzy logic for continuous quality improvement.
Manage HTTP Session in Websphere Application Server V7 Cluster
Authors: Du Jian Xia , Geng Zeng Min , Sun Xiao Dong
Published: October 2013

This paper introduced that how to manage HTTP session in in WebSphere Application Server V7 cluster, and what is Session Affinity, how to achieve the persistence management. The merits and drawbacks of two kinds of schemes are discussed which are be supported by WebSphere Application Server. In the end, some suggestions for persistence management tuning are proposed to meet the users’ requirement of high performance and high reliability.
Applying Lean Construction to Construction Project
Authors: Thanh Binh Nguyen
Published: October 2013

Lean construction is aimed to improve construction performance by eliminating wastes that do not add value to the customer. This project studies lean construction and its application in concrete construction projects at both the operation and project levels. In conjunction with a concrete contractor, actual concrete construction projects were observed, and problem areas contributing to delay and other wastes were identified. At the project level, the lack of coordination among subcontractors was cited as one of the major factors contributing to schedule delays. This paper proposes to use the last planner concept, the linear scheduling method, and the graphic schedule method to improve communication and look-ahead scheduling. Related software was developed for implementing this scheduling tool. At the operation level, a systematic approach of was identification, operation re-design, and employee training was applied to reduce wastes found in the field operation. A case study of bulkhead installation was used to demonstrate this approach, and a 3D animation was created for employee training.
Co-Extrusion of Wood Flour/PP Composites with PP-Based Cap Layer Reinforced with Macro-and Micro-Sized Cellulosic Fibres
Authors: Turku Irina , Hämäläinen Kimmo , Kärki Timo
Published: October 2013

In order to improve the properties of a co-extruded wood-plastic composite (WPC), different types of cellulosic fibres, pulp cellulose (PC), a combination of PC/microfibrillated cellulose (MFC) and wood flour (WF) with different size were introduced into shell layer based on a polypropylene (PP) matrix. The combination of PC/MFC improved the tensile properties compared to PC alone; but the impact strength was independent on the MFCs content. The presence of MFCs did not influence the water absorption (WA), but thickness swelling (TS) increased, however. The properties of the WF/PP-shell composite were highly affected by the WF particle size. The 20-mesh-sized WF-loaded composite had weaker mechanical properties compared to the smaller sized, Arbocel C320, shell-layer filled WPC. Also, Arbocel C320/PP-coated WPC had the highest tensile properties among all studied composites. The morphology of the composites was examined with a scan electron microscope.
Study on the Countermeasures of Aviation Equipment Maintenance Knowledge Management
Authors: Xiao Li Zhi , Cui Yue Shan , Wang Xiao Kun , Liu Ji Bao , Xu Xiao Bin
Published: October 2013

From the concept of knowledge management, this paper points out the importance of aviation equipment maintenance knowledge management. Specific countermeasures are presented by the three elements of knowledge management which are personnel, organization and technology as the main line.
The Cultivation of the Creative Talents of Normal University Based on Information Technology
Authors: Bie Mei , Xiao Wei , Liu Jian Guo
Published: October 2013

Computerized information technologies are gradually instead of the traditional methods as primary sites of knowledge and information since 1980s and has been widely used in higher education recent years, but from the current condition of speaking, most of these efforts still stay at the surface level. Determining how to actively promote the integration of information technology and curricula and the construction of an interactive teaching system in normal university is discussed in this paper.
The Construction of Engineering Projects Environmental Performance Auditing
Authors: Qu Xiao Ning
Published: October 2013

The Environmental performance auditing is one professional audit that auditing the environmental performance of engineering project. We construct a multi-level auditing network in the whole process of project. That network can be divided into government audit, social audit and internal audit. And with which we predict, evaluate and control the impact on environmental effectively.
Patent Storage Research of Cooperation between S&T-Oriented Small-Micro Enterprises and Universities in University-Industry-Government Based on EPQ Model with Shortage
Authors: Lin Wan Qiong , Su Shi Bin
Published: October 2013

Based on the practical demand of the development of Chinese economy for the cooperation of S&T-oriented small-micro enterprises with university-industry-government, herein we analyzed the issue of patent storage in the cooperation between S&T-oriented small-micro enterprises and universities by a EPQ model with shortage. We calculated the optimum quantity and cycle for patent research, proposing a direction towards further studies. This article is specific to the enhancement for the previous work by Ye and Su (2013).
Effect of 1-(9-Ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione on Properties of Luminescent Europium (III) Complexes
Authors: Tang Huai Jun , Wei Li Ying , Luo Qian , Shen Xian Wang , Liu Chang Li
Published: October 2013

In order to understand the effect of β-diketone ligands containing carbazole group on luminescent europium (III) complexes, a series of europium (III) complexes (Phen)Eu (DBM)3-nLnwith 1-(9-Ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione (L) were synthesized and investigated contrastively (n = 0, 1, 2, 3; DBM: dibenzoylmethane; Phen: 1,10-phenanthroline). The results show amorphous nature, glass transition temperatures and luminescent intensity can be improved obviously by 1-(9-ethyl-9H-carbazol-3-yl)-4,4,4-trifluorobutane-1,3-dione, at the same time, their thermal decomposition temperatures have seldom effected by it. The results verify the performance of europium (III) complexes used as luminescent materials can be effectively improved by the β-diketone ligands of this type.
Defect Types and Ultrasonic Nondestructive Testing for Fiber-Reinforced Composites
Authors: Liu Lin Dong , Wu Xiao Qing
Published: October 2013

In this paper, an attempt is made to introduce the defect types relevant to ultrasonic non-destructive testing, and then, we explain how these defects generate in fiber-reinforced composites. The common failure modes which occur are described and discussed. The significance of each of the fracture mechanisms, in terms of their effects on the residual load-bearing properties, is considered. The second part describes briefly the main relevant ultrasonic NDT methods used to identify these defects and indicates the sensitivity to the different types of defect.
Theoretical Predication Method of High Order Elastic Constants of Cubic and Tetragonal Crystal Material
Authors: Yang Hong , Huang Wen Qi
Published: October 2013

The theoretical method of predicating second and third order elastic constants of cubic and tetragonal material are presented by using first-principles total-energy method combined with the means of homogeneous deformation. The predicted results of SrTiO3provide reasonable agreement with the reported experimental data, other theoretical results and Cauchy relations. Since high order elastic constants are very difficult to be measured, the methods presented here provide a valuable guidance for experiments and the investigation of high order elastic properties for cubic and tetragonal materials.
Mechanical and Tribological Properties of Polytetrafluoroethylene Filled Polyoxymethylene/Aluminum Foam Interpenetrating Phase Composites
Authors: Long Chun Guang , Su Yang , Shen Chao
Published: October 2013

A new type of interpenetrating phase composites (IPC) was prepared by impregnating open-cell aluminum foam (AF) with polyoxymethylene (POM) through an injection molding process, and their mechanical properties has been investigated. It shows relatively high bending strength and impact strength with compared to the pure AF and POM. With the addition of 10wt% polytetrafluoroethylene (PTFE) to POM, the mechanical properties of the IPC are further improved . On the other hand, Tribological tests of IPC were carried out with a pin-disk machine, and their worn surfaces were characterized by scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDS) to explore the wear mechanism. Results show that the friction coefficient of AF/POM/PTFE IPC is about 12.7% lower than that of AF/POM IPC and the wear loss reduced by 33.3%. The reason of the increase in the wear resistance can be explained by the transfer film which delays the wear process.
Thermodynamics Analysis of SnO2/C Composite Materials Fabricated by Biotemplating
Authors: He Xin Hai , Zhang Xiong Bin , Wang Meng , Jiang Feng Yang , Wang Jun Bo , Liu Song Tao , Yang Min Ge , Su Xiao Lei
Published: October 2013

In order to explore the reaction mechanism of preparing SnO2/C composite materials by biotemplating, multiple samples are prepared by carbothermal-reduction under vacuum from ramie fibers/Sn (OH)4 precursors, which were prepared from ramie fibers impregnated with Sn (OH)4 sol. Thermodynamic calculation and experimental research indicate the reaction mechanism of preparing SnO2/C composite materials is that granular SnO2 is generated by pyrolysis of Sn (OH)4 at about 345.7°C,which distributes in the clearance of the ramie carbon. Pellet-like SnO/SnO2 composites generated by gas-solid and solid-solid reaction is solid solution of SnO and SnO2 in the Sn-O-C-H reaction system. And the microstructure of the composites changes from block to pellet-like with the increase of Sn content. The results show that the temperature of 631.3°C is the critical temperature that the reduction reaction of SnO2 and C can occur spontaneously. With the increase of sintering temperature, SnO2 is reduced to SnO and Sn by agent C and CO, SnO2 in turn. Furthermore, thermodynamic analysis results coincide well with the experiment data.
Influence of Boron on Glass-Ceramic Magnetic Performance for Hyperthermia Application
Authors: Liu Jian An , Zhang Mei Mei , Yang Xue Na
Published: October 2013

Ferromagnetic glass-ceramics for hyperthermia application were obtained by melting of the co-precipitation-derived precursor from the nominal compositions SiO2-B2O3-Fe2O3-SrO-Na2O. The influence of boron content on magnetic performance of these glasses was investigated. Glass-ceramics were characterized by x-ray diffraction and magnetic measurements. The crystallization behavior of the glasses was investigated.
Investigation of Cr34Ni45 Ethylene Cracking Furnace Tube in Service
Authors: Song Ruo Kang , Zhang Mai Cang , Dong Jian Xing , Du Chen Yang
Published: October 2013

The structure and mechanical property changes of Cr34Ni45 ethylene cracking furnace tube serviced for different time (as-cast, 1.5 years and 6 years) are systematically investigated by using SEM, EMPA, XRD and mechanics performance test methods. The microstructure of the as-cast alloy consists of austenitic matrix, NbC and M7C3 primary carbides. Eutectic M7C3 transform into M23C6, and the NbC transform into Nb3Ni2Si which is so-called η-phase during service, accompany with precipitation of secondary M23C6. Furthermore, comparing to original uniform microstructure distribution, there are three zones including oxidation layer, carbides depletion zone and carbides-rich zone at the subsurface region of the inner-wall of Cr35Ni45 tubes after long time service. Oxidation behaviors at high temperature consist of external oxidation of chromium and internal oxidation of silicon. The carburizing behavior of Cr35Ni45 tube is mainly caused by the coking on the surface of inner-wall, but carburization of the serviced tubes are both at lesser-degree because of the auto-remediation of outer oxidation layer. High temperature service heavily reduced mechanical performance of the tubes, and fracture mode transform from a mixed mode to a brittle one during service.
Amino Acid Catalyzed Conjugate Addition of Thiol to Dienone
Authors: Cui Han Feng , Lin Yan , Fan Hao , Yu Li De , Wan Ping Nan
Published: October 2013

Double conjugate addition of thiols with dienones was catalyzed by amino acids at room temperature in methanol, to afford the corresponding addition product in good to excellent yields.
Morphology and Electrochemical Performance of Amorphous Nickel Hydroxide Added Anion
Authors: Shang Wei , Liu Chang Jiu , Wen Yu Qing
Published: October 2013

Amorphous nickel hydroxides added anion (PO43-) has been prepared by chemical precipitation method combined with rapid quench technique. The morphology of the prepared samples were characterized by scanning electron microscope (SEM), and energy dispersive spectroscopy (EDS). The effect of anion on the electrochemical performance of the prepared nickel hydroxides were investigated by charge/discharge tests and cyclic voltammetry (CV). The results demonstrated that amorphous nickel hydroxide added PO43-has better electrochemical performance, such as higher discharge potential, better reaction reversibility, higher the charging efficiency, and better cyclic stability, than that of the pure amorphous nickel hydroxide.
Application of Dividing Wall Column in High Purity Cyclohexene Oxide Distillation
Authors: Wang Er Qiang
Published: October 2013

In this paper, application of dividing wall column (DWC) to high purity cyclohexene oxide distillation was studied. Simulation using Aspen plus software was done to compare the traditional two tower process with new process based on DWC. The results show that, with the same feed parameters, the DWC processes can achieve identical separation effect as the tow tower process with an energy saving of 14.5%, and capital investment and space saving can also be gained. In addition, only a reboiler is need in DWC process, residence time of these thermosensitive substances such as cyclohexene oxide inside high temperature region can be reduced, so can to avoid the frequently occurring heat decomposition to a great extent. So the simulation results indicate that a DWC would be a beneficial alternative to conventional two tower configuration for high purity cyclohexene oxide distillation.
Study on a Structure of 2,6-Pyridine-Dicarboxylic Acid Europium Quarthydrate
Authors: Liu Hai Xing , Liu Qing , Xu Yang , Huang Ting Ting , Wang Lin Tong , Ye Kai Qi , Zeng Guang
Published: October 2013

A novel Eu metal complex C14H19EuN2O14has been synthesized from hydrothermal reaction and the crystal structure has been determined by means of single-crystal X-ray diffraction. The Eu atom is nine-coordinated by two N atom and seven O atoms. The crystal packing is stabilized by O-H...O hydrogen bonding interactions
Simulation and Optimization of Chlorobenzene Distillation Process
Authors: Wang Er Qiang
Published: October 2013

In general, two tower process was used to purify crude chlorobenzene, of which the primary tower is to remove benzene and water, and the rectification tower to remove higher boiling components. In this paper, simulation and optimization of such two tower process were done using the rigorous distillation column simulator RadFrac in Aspen Plus. The steady-state simulation results of temperature, flowrate and compositions can agree well with that of real plant. In addition, optimized design and operating parameters, such as minimum reflux ratio, minimum number of trays, feed stage, etc, were obtained and would be very important for industrial applications.
Electrochemical Synthesis and Electrochromic Properties of Poly(3-bromothiophene) Films
Authors: Song Xu Chun , Ma Rong
Published: October 2013

Electrochemical synthesis in a room temperature ionic liquid, 1-butyl-3-methyl-imidazolium tetrafluoroborate ([BMIBF4), has been used to prepare electrochromic poly (3-bromothiophene) (PBrT). The PBrT films were characterized by fourier-transform infrared spectroscopies (FTIR) and scanning electron microscopy (SEM). Electrochemistry properties of the prepared film was characterized by cyclic voltammetry. Spectroelectrochemistry and electrochromic properties of the PBrT films were characterized using various experiment techniques in [BMIBF4. The thin films were red at its neutral state. After oxidization of the PBrT films, the films underwent reversible change to the blue.
The Extraction of Polyphenols from Tea Leaves Based on Mechanochemical Methodology and Aqueous Two-Phase System
Authors: Li Da Gang , Yuan Fu Fang , Chen Ru Pan , Li Yun Long , Li Kun Lu , Lin Song Bai
Published: October 2013

In order to extract tea polyphenols (TPs) by water under room temperature, the mechanochemical methodology was used for leaching process, and then TPs was purified from leaching solution by ethanol and ammonium sulfate aqueous two-phase system. The optimum parameters of mechanochemical methodology leaching TPs were determined by response surface methodology (RSM), which optimum parameters were: Na2CO3content 25~27wt%, solid material particle size D9540~45μm, liquid/solid mass ratio55~60, leaching time 16~18min. The TPs leaching rate was 16.46%. When ammonium sulfate mass composition0.2, ethanol mass composition0.35 as the composite of the extraction system, TPs maximum extraction rate was 93.4%. The maximum yield of TPs was 15.25% on the average, with average purity was 96.54% ultimately. Under such technology, water is only solvent used in TPs leaching at room temperature, and aqueous two-phase system extraction system under mild conditions, avoid the use of toxic solvent, is a green technology for extracting TPs.
Study on Novel Structure of Praseodymium Complex, C5H13O11Pr
Authors: Liu Hai Xing , Liu Qing , Huang Ting Ting , Xu Yang , Wang Lin Tong , Yue Hui Juan , Ye Kai Qi
Published: October 2013

A novel praseodymium complex C5H13O11Pr has been synthesized from hydrothermal reaction and the crystal structure has been determined by means of single-crystal X-ray diffraction. The Pr1 atom is nine coordinated by nine O atoms. The crystal packing is stabilized by O-H...O hydrogen bonding interactions.
Progress of Purification and Applications of Coal Gangue
Authors: Huang Teng , Lei Shao Min , Ma Qiu Lin , Wang En Wen
Published: October 2013

coal gangue, as one of the largest industrial solid wastes discharged during coal production has caused serious environmental pollution. However, the utilization level of coal gangue is not the same in different countries. Through purification and activation ,the utilization rate of coal gangue could increase gradually,while bioleaching method can also relieve the pollution in some degree. But recent application of coal gangue may always restrict to individual components,so the utilization rate is not so satisfactory. To actively develop other useful elements and advanced industry is a new trend for the application of coal gangue.
Study on the Chemical Stability of Mechanochemically Modified Polyvinylchloride (PVC) Membrane
Authors: Hao Zhang , Hu Xiao Yu , Chen Ying Bo
Published: October 2013

A ball mill was used to mechanochemically modified Polyvinylchloride (PVC) powders. PVC membranes before and after mechanochemical modification were prepared at different dope solution temperatures 60°C. The modified PVC membrane was immersed in HCl solution, NaClO solution and NaOH solution, the permeation flux and mechanical properties of the PVC membranes before and after post-treatment were studied. The results showed that, modified PVC membrane owned good ability of resistance to acid and alkali, NaClO solution had a strong oxidizing, it generated the polar group made the surface of PVC membrane more hydrophilic, the permeation flux improved. The strong oxidizing of NaClO solution made the skin layer of PVC membrane more thinner, the tensile strength decreased.
Solvothermal Synthesis, Structure, Fluorescence and Magnetism Properties of a Novel 3D Metal-Organic Framework Based on Tetranuclear Copper Secondary Building Units
Authors: Wu Lei , Xue Ming , Chaplais Gérald , Zhu Guang Shan , Qiu Shi Lun , Simon-Masseron Angélique , Patarin Joël
Published: October 2013

A novel 3D metal-organic framework based on tetranuclear copper Secondary Building Units, [Cu2(μ3-OH)(4-oip)(DMF)]·DMF·2H2O (JUC-76) (4-oip = 4-hydroxyisophthalic, DMF =N,N-dimethylformamide, and JUC = Jilin University China), has been synthesized under solvothermal conditions. It crystallizes in monoclinic symmetry with space groupP21/n. JUC-76 possesses a three-dimensional network with one-dimensional rhombic channels of approximately 13.6 × 8.5 Å2along the [100] direction. The resulting structure of JUC-76 is a distorted rutile topology with one 3-connected organic node and one 6-connected inorganic node. And its Schläfli symbol is (4·62)2(42·610·83). In addition, JUC-76 exhibits fluorescence emission at 446 nm, and a dominant anti-ferromagnetic interaction between the Cu (II) ions.
Calcium Methoxide Synthesis from Quick Lime Using as Solid Catalyst in Refined Palm Oil Biodiesel Production
Authors: Suwanthai Warakom , Punsuvon Vittaya , Vaithanomsat Pilanee
Published: October 2013

In this research, calcium methoxide was synthesized as solid base catalyst from quick lime for biodiesel production. The catalyst was further characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), attenuated total reflection fourier transform (ATR-FTIR) and Energy-dispersive X-ray spectroscopies (EDX) to evaluate its performance. The transesterification of refined palm oil using calcium methoxide and the process parameters affecting the fatty acid methyl ester (FAME) content such as catalyst concentration, methanol:oil molar ratio and reaction time were investigated. The results showed that the FAME content at 97% was achieved within 3 h using 3 %wt catalyst loading, 12:1 methanol:oil molar ratio and 65 °C reaction temperature. The result of FAME suggested calcium methoxide was the promising solid catalyst for substitution of the conventional liquid catalyst.
Preparation and Characterization of Cellulose Films with Curcumin
Authors: Suksulap Jaranya , Suwanruji Potjanart , Setthayanond Jantip
Published: October 2013

The cellulose film was prepared from regenerated cellulose fiber residue by dissolving the cellulose in sodium hydroxide solution at low temperature (-15 °C). The properties of the prepared film were investigated by tensile testing, Scanning Electron Microscope (SEM), X-ray Diffractometer (XRD) and also swelling ratio. Curcumin was added into the film with three different concentrations. The color strength of the curcumin-added film was evaluated and the color change of this film in different pH was also reported.
Synthesis and Photocatalytic Activities of Bi2WO6 Three-Dimensional Hierarchical Microstructures
Authors: Song Xu Chun , Ma Rong
Published: October 2013

The Bi2WO6 three-dimensional (3D) hierarchical microspheres from nanoplates have been synthesized by a hydrothermal route. The products were characterized in detail by multiform techniques: X-ray diffraction (XRD), energy-dispersive X-ray analysis (EDS), scanning electron microscopy (SEM), and UVVis absorption spectrum. XRD patterns indicated that the Bi2WO6 three-dimensional hierarchical microspheres were orthorhombic phase. Furthermore, SEM revealed that Bi2WO6 three-dimensional hierarchical microspheres consisted of Bi2WO6 nanoplates.
Synthesis and Antiproliferative Activities of Novel 2-Phenylaminopyrimidine (PAP) Derivatives
Authors: Chang Sheng
Published: October 2013

A series of novel 2-phenylaminopyrimidine (PAP) derivatives structurally related to Imatinib were designed and synthesized. The abilities of these compounds to inhibit proliferation were tested in human chronicmyeloid leukemia K562 cells and HL60cells. Compound (10c) was the most effective cell growth inhibitor in inhibiting K562 cells and compound (10f) was the most effective cell growth inhibitor in inhibiting HL60 cells.
Ganoderic Acid Restores the Sensitivity of Multidrug Resistance Cancer Cells to Doxorubicin
Authors: Ouyang Jing Jing , Wang Yu Qiang , Tang Wen
Published: October 2013

Ganoderic acid R (GA-R) possessed significant cytotoxicity on a multidrug resistance (MDR) tumor cell line (KB-A-1/Dox) and a sensitive tumor cell line (KB-A-1). The results indicated that the inhibition effect of the GA-R was due to the induction of apoptosis. The use of GA-R in vitro resulted in a restoration response of the KB-A-1/Dox cells to the anti-tumor drug doxorubicin by stimulating the drug accumulation within the cells. The index of MDR reversion of GA-R was about 22 folds. The findings show that the ganoderma triterpene may be good candidates for anti-tumor and anti MDR chemotherapy.
Development of Selective Blue-Laser Lithography for Biomedical Applications: A Pilot Study
Authors: Apatthananon Tratat , Channasanon Somruethai , Uppanan Paweena , Chantaweroad Surapon , Siriporn Tanodekaew , Nattapon Chantarapanich , Surasith Piyasin , Kriskrai Sitthiseripratip
Published: October 2013

The study aimed to investigate the selective blue-laser lithography that can fabricate the biomedical materials. The major advantage of using blue-laser instead of UV laser is to lower the machine and operating costs but still keeping the proper part quality for biomedical applications. The material used in the study is the bisphenol a diglycidylether methacrylate (BisGMA) which is specific formulated for photo-polymerizing with blue laser (wavelength = 473nm). The fabricated parts were preliminarily examined by flexural strength testing and in vitro testing of toxicity by direct contact test. The results showed that the flexural strength of fabricated part was about 92% as compared to the flexural strength of hand-pressed PMMA. The in vitro testing of toxicity, confirmed that the fabricated part by the selective blue-laser lithography with BisGMA material has good biocompatibility.
The Structure and Corrosion Process Characterization of Galvannealed and Galvanized Steel Sheets
Authors: Jiang She Ming , Guo Da Wei , Zhang Qi Fu
Published: October 2013

The dissolution process of galvannealed (GA) and galvanized (GI) coating was examined by correlating a chemical stripping test in 1MNaCl+0.01MH2SO4solution. The key time of dissolution process of coating was found via measuring the variation of free corrosion potential. Through coating metallographic observations at the key point, the dissolution process of coating can be clear. There are four Fe-Zn intermetallic phases in GA coating, namely gamma-1,gamma,delta and zeta phases, from the substrate. The compressed part of GA and GI coatings was the initial of corrosion process. The net crack will be emerging on the delta phase, which width graduallyincreasing until stripping. Pitting corrosion occurred on the GI coating in the solution containing Cl-ion, the area and depth of pit gradually increasing until stripping. The corrosion potential of Fe2Al5Znxinhibition layer is about-0.8VSCE.
Coating Structure and Corrosion Resistance Behavior of Hot Dip Zn-Al-Mg-Si Alloy Coating Steel Sheet
Authors: Jiang She Ming , Yue Chong Feng , Zhang Qi Fu
Published: October 2013

Hot Dip Zn-6Al-3Mg-0.2Si coating steel sheet was prepared in laboratory by Hot-dip Galvanizing Simulator produced by National Engineering Lab of Advanced Coating Technology for Metal Materials. The surface and cross sectional microstructure of the samples were analyzed by using SEM and EDS. Hot dip Zn coated, 55Al-43.3Zn-1.6Si and Zn-6Al-3Mg-0.2Si coated steel sheet samples were exposed to standardized salt spray test. The Zn-6Al-3Mg-0.2Si coating and its erode production were investigated by XRD. The results showed that the hot dip Zn-6Al-3Mg-0.2Si coating had better corrosion resistance than ordinary galvanized layer.
Study on the ALN Thin Film for Improving the Performance of Heat Dissipation on High Power LED Substrate
Authors: Li Yang , Kui Chen , Peng Hui Ren , Zhu Ming Jia , Pan Ya Wen , Liang Jing Sheng
Published: October 2013

This dissertation employs the method of direct current (DC) magnetron sputtering on the reverse side of the high power LED aluminum substrate to deposit the AlN thin film. And then, we paste the high power LED beads to the front of the substrate, testing and studying the heat dissipation influences of the AlN thin film on the high-power LED beads. In order to compare easily, some parts of the reverse of aluminum substrate should be overlaid thermally conductive silicone. The result indicates that depositing the AIN thin film or the overlay thermally conductive silicone on the back side of the aluminum substrate can improve the heat dissipation capability of high power LED, the AIN thin film especially.
Effect of Substrate Temperature on Structural and Optical Properties of ZnO:Co Thin Films Fabricated by Laser Molecular Beam Epitaxy
Authors: Wang Xian Gang
Published: October 2013

We synthesized ZnO:Co thin films on sapphire (0001) substrates by laser molecular beam epitaxy (LMBE) method. X-ray diffraction (XRD) spectra indicated that all samples possessed wurtzite structure with the preferential c-axis-orientation and the value of the c-axis lattice decreased with increasing substrate temperature. UVvis transmittance spectra and X-ray photoelectron spectroscopy (XPS) implied that Co2+ions incorporated into ZnO lattice with substitution for Zn2+ions and the non-bivalent Zn existed in as-prepared thin films. Two emission bands located at 418 nm (2.97 eV) and 490 nm (2.53 eV) were observed from the photoluminescence (PL) spectra of all samples. The two emission bands were in relation to Zn interstitials and the complex of VOand Zni(VOZni). The quantity of the Zn interstitials remained mostly invariable as substrate temperature increased.
Mechanisms and Characteristics of Ultrasonic Impact Treatment on Steel Surface
Authors: He Ting Ting , Ding Zhi Min , Shen Chang Bin , Li Zhao
Published: October 2013

Firstly, surface deformation strengthening technology on steel was discussed, then, ultrasonic impact treatment (UIT), a newly-developed surface deformation strengthening technology, was elaborated. Finally, the surface of normalized LZ50 steel was treated by ultrasonic impact treatment (UIT) to verify the value of the technology. After UIT, a 130μm-thick hardened layer is produced and surface hardness is improved by 46%. Meanwhile, the compressive residual stress of the sample can reach 601Mpa and surface roughness is dramatically reduced to 0.21μm. All of the results are beneficial for the improvement of fatigue properties of steel.
Research on the Rate-Dependent Fracture Energy of Al/HTPB Adhesive Interface
Authors: Wei Zhen , Ju Yu Tao , Zhou Qing Chun
Published: October 2013

The mode-I fracture of adhesive surface was studied by uniaxial tensile test of the double cantilever beam (DCB) adhesive joints which were made from aluminium sheet and Hydroxyl-terminated polybutadienec (HTPB). The load - displacement curves which characterize the response of the macroscopic fracture show a significant rate-dependent property, i.e. the peak load and corresponding displacement increase with the increase of the loading rates. The critical energy release rate has been defined in two waysnon-linear initiation point (NL) and the maximum load point based on the experimental curves, was gained by the corrected beam theory of fracture mechanics. In addition, the cohesive parameters-fracture energy was also decided by the inversion identification method. The fracture energy obtained numerical simulation is slightly greater than the value obtained by the corrected beam theory, but both results indicate the fracture energy of the adhesive interface also increases continuously with increasing loading rates.