bluuebunny/crossref_metadata_2025 huggingface dataset:
Selection of Outsourcing Supplier Based on AHP
Authors: Geng Wen Li , Hu Ying Song
Published: March 2012

With the development of the economy and society, more and more enterprises outsource the procuring of services or products from an outside supplier or manufacturer in order to cut costs. To realize outsourcing, the outsourcing needer must choose the supplier carefully, so the method that how to choose the right supplier to realize the outsourcing is particularly important. Lots of factors should be taken into account, but the common factors are cost, quality, additional resources, prior works and contract terms. With the qualitative analysis and quantitative analysis method of analytic hierarchy process, put forward the model of the outsourcing. The model includes three aspects: objective layer, criterion layer and alternative layer. The objective layer is the aim of select supplier; the criterion layer is the factors which affect the choice and the alternative layer is the different selectable enterprise. After calculating the synthetic level value to order in single level and whole system and though the consistency check, eventually got the different weights of different alternations, it can provides direct basis for the decision-making, that is, the enterprise which has the biggest weight of the choice should be placed ahead of the others.
Studies on the Dynamic Transform of Database Based on Design Process
Authors: Liu Wei Hong , Liu Hai Bo
Published: March 2012

Aimed at the designing process of topical components in standard parts and in complex curved surface, by means of ADO controlling ware to realize the link of VB with database, and set up variable array to let the CAD be able to exchange data dynamically in real time with database while the designing work was carried out so as to realize the share and reuse of data. And online loading of data was carried out to the data that reduce the repeat inputting work and greatly enhanced the efficiency and quality of design
Linear Regression Calculation and Energy Saving Analysis about Thermotechnical Parameters of Target Type Impinging Stream Nozzles
Authors: Yan Su Qian , Tang Sheng
Published: March 2012

To study the thermal property and the feasibility about the target type impinging stream nozzles, the thermotechnical parameters have been measured in Xi'an No.3 Textile mill. The equation between quantity of water and pressure, aperture, spacing has been established by regression analysis method. In the same way, the equation and the characteristic curve about efficiency and spacing, air mass velocity has been built. Comparing with the centrifugal nozzle, water distribution system about each nozzle has been calculated. Hydrographic net resistance of each kind of system has been calculated and the economical analysis has been done. It may provide a reference basis for choosing nozzle and designing the water spray chamber.
Strength Analysis of Flexure Hinge Mechanism in XY Table
Authors: Feng Xiao Mei , Li Li Shun , Liu Wen Kai , Zhang Da Wei
Published: March 2012

A new 2-DOF positioning table of high speed and accuracy, directly driven by voice coil actuator, is put forward. And a novel elastic decoupling mechanism is used in the table. As the key component of the elastic decoupling mechanism, the flexure hinge is studied, including its stiffness, maximum stress and inherence frequency. The analysis results show that the flexure hinge meets the design requirement.
The Functional Configuration Mapping for Cloud-Based Mass Customization Service Platform
Authors: Che Jun Hua , Zeng Qian , Zhang Shu You
Published: March 2012

The successful application for cloud-based mass customization service platform critically lies in the precision and efficiency factor of the functional mapping solution. This paper brings up the functional solution model based on three mapping domains for functional configuration: functional domain, behavior domain and structural domain and studies the mapping solution algorithm in cloud-based mass customization service platform. Finally this research has been applied for customization product: elevator, and has improved the efficiency of functional solution in the actual manufacture.
Study of Performance of US-FE-LSPIM QUAD4 Element on Mesh Distortion
Authors: Jia Cheng , Chen Hui Hui
Published: March 2012

This US-FE-LSPIM QUAD4 element is formed by using two different sets of shape functions for the trial and test functions, viz. sets of FE-LSPIM QUAD4 element shape functions and sets of classical isoparametric shape functions. For some test problems, the US-FE-LSPIM QUAD4 element has good accuracy. And by compared with FE-LSPIM QUAD4 element, the proposed element does not need to use Penalty method or Lagrange multiplier method to ensure fulfilment of exact essential boundary condition along the entire length of the edge. This paper further studies the performance of US-FE-LSPIM QUAD4 element on mesh distortion. Numerical test examples show that the element exhibits high precisions even under the mesh distortions. The US-FE-LSPIM QUAD4 element displays good tolerance to the mesh distortions
Cause Analysis of Cracks Found on Horizontal Truss of Quayside Container Cranes
Authors: Qiao Zhen , Dong Da Shan , Zheng Hui Qiang
Published: March 2012

Horizontal truss is designed to increase the stiffness of the girder, but cracks are found at the forefront joint after 3years’ operation. To analyze the cause, finite element simulation method is employed. Fatigue calculation is done on the basis of the simulation results according to FEM code. The research indicates that when the structure is working in tension-pressure alternative situation, its loading capacity is sharply reduced, and welding structures are even sensitive to such stress cycle because of serious stress concentration. Operating status should be fully considered to avoid failure in low stress.
A Review on Mechanical Properties of Freestanding Diamond Films
Authors: Hei Li Fu , Lu Fan Xiu , Li Cheng Ming , Tang Wei Zhong , Chen Guang Chao , Song Jian Hua
Published: March 2012

As an emerging brand new type of engineering material for a variety of important high technology applications, the deep understanding of the mechanical behavior of freestanding diamond films has become an emergent task of vital importance. Of the many deposition methods dc arc plasma jet has been regarded as the most promising technique for large area high quality and low cost production of freestanding diamond films. In the present paper, recent progress in mechanical properties of freestanding diamond films mainly by high power dc arc plasma jet with rotating arc root and gas recycling is reviewed. Testing methods for fracture strength and fracture toughness are discussed. Experimental data are presented and compared to that by MWCVD. Dc arcjet diamond films start to oxidize at about 700°C, however, oxidation up to 800°C for 10 min does not affect the fracture strength. Fracture mechanism is discussed. The strange mechanical behavior of freestanding diamond films is explained. It is surprising that CVD diamond film is such a kind of material which is strong, but full of different size of defects. It is hoped that the present paper will be helpful for those who wish to understand and use this brand new type of engineering material.
Characteristics and Process Optimization of Hot-Air Drying Pepper
Authors: Liu Chun Shan , Wu Wen Fu , Song Jia , Zhang Ya Qiu , Li Jun Xing , Li Ya Qin
Published: March 2012

In order to solve the drying problems in the deep-processing of pepper, peppers were dried through blanching pre-treatment and hot-air drying process. Orthogonal test designs were carried out to investigate factors influencing the quality and moisture content of pepper. The results showed that the whole drying process was a reduction speed drying, hot-air temperature and wind speed have significantly affected on the drying rate of pepper, but the impact of hot-air temperature was more prominent than wind speed; hot-air temperature was found to be the primary parameter to affect the quality of the pepper, wind speed was the secondary one and followed by packing thickness; drying time was found to be the primary parameter to affect the moisture content of the pepper in the drying process, the best drying conditions were as follows: wind temperature was 80°C, wind speed was 10 m/s, packing thickness was 80 cm, drying time was 12 h after 100°C steam blanching pre-treatment
Characterization and Properties of CrN and CrBN Films
Authors: Yuan Xiao Mei , Yang Shi Liang , Li Teng , Zhang Guan Gan
Published: March 2012

The CrN films and CrBN films were successfully deposited by medium frequency magnetron sputtering in a mixture gas of nitrogen and argon. X-ray diffraction analysis shows that the CrN have preferential orientation of (111), (200) and (222). And the patterns of CrBN films is similar to that of CrN. The CrN films have smooth surfaces with dense and continuous microstructure and the CrBN films have glassy packed structure without columnar grains. The hardness of CrBN films were remarkable improved because of B attending.
Error Identification for 3-Axis Machine Tool Based on Laser Interferometer
Authors: Pan Fang Yu , Li Ming , Yin Jian
Published: March 2012

The worldwide competition calls for higher precision machine tool, so how to improve the machining precision is a hot topic. Error identification, as the first basic step of enhancing precision ,is paid expecially attention to. In this paper, two different but important kinds of identification methods—direct identification and indirect identification are introduced, what special is that these methods are achieved just by one equipment—laser interferometer named laser Doppler displacement measurement(LDDM).Through experiments, we can gain the errors of 3-axis machine tool including 3 displacement errors, 6 straightness errors,3 squareness errors, axis spike, backlash, circularity value, cyclic error and so on. The results will benefit for later accuracy improvement.
Effect of Growth Parameters on Single Crystal Diamond Deposition by DC Arc Plasma Jet CVD
Authors: Hei Li Fu , Liu Jie , Lu Fan Xiu , Li Cheng Ming , Song Jian Hua , Chen Guang Chao
Published: March 2012

Homoepitaxial diamond layers were grown on commercial 3.5 x 3.5 x 1.2 mm3 HPHT synthetic type Ib (100) single crystal diamond plates using a DC Arc Plasma Jet CVD operating at gas recycling mode. The effects of substrate temperature and CH4/H2 ratio on the surface morphology, the growth rate and the quality of the synthesized diamond have been studied using optical microscopy and Raman spectroscopy. With no intentional nitrogen added, the growth rate up to 12.3µm/h has been obtained in the single crystal diamond sample deposited at 1000 °C with CH4/H2=0.625%, exhibiting relatively smooth surface morphology without any growth hillocks nor non-epitaxial crystallites, and presenting the typical feature of the epitaxial step-flow growth. The full width at half maximum (FWHM) of the Raman spectra was 2.08 cm-1, which was close to that of the natural type IIa single crystal diamond.
Apply Artificial Neural Networks to Estimate Stress Distribution around Holes Edge in Composites
Authors: Pazand Kamran , Alizadeh Younes
Published: March 2012

The purpose of this paper is to estimate the fast determination of stress distribution around a circular hole in symmetric composite laminates under in-plane loading. For this purpose calculation of stress values in the composite plate around edge holes in different plies position for a finite number of input data sets using the Lekhnitskii expressions and code program. The resulting data would then be used to train artificial neural networks (ANN) which would be able to predict –accurately enough- those quantities throughout the composite plate body for any given input value in any position ply and fore and stress that impose.
Application of R/S Rheometer in Low Temperature Drilling Fluid Rheology Determination
Authors: Jiang Xiao Ling , Lei Zong Ming , Wei Kai
Published: March 2012

With six-speed rotary viscometer measuring the rheology of drilling fluid at low temperature, during the high-speed process, the drilling fluid temperature is not constant at low temperature, which leads to the inaccuracy in rheological measurement. When R/S rheometer is used cooperating with constant low-temperature box , the temperature remains stable during the process of determining the drilling fluid rheology under low temperature. The R/S rheometer and the six-speed rotational viscometer are both coaxial rotational viscometers, but they work in different ways and the two cylindrical clearance between them are different.How to make two viscometer determination result can maintain consistent?The experimental results show that, The use of R/S rheometer, with the shear rate for 900s-1 shear stress values instead of six speed rotary viscometer shear rate for 1022s-1 shear stress values.Then use two-point formula to calculate rheological parameters.The R/S rheometer rheological parameter variation with temperature has a good linear relationship,Can better reflect the rheological properties of drilling fluids with low temperature changerule
Effect of Chelating Pretreatment on Photocatalysis Bleaching
Authors: Li Yao , Lei Yan Ping , Nong Bin , Huang Dong Mei
Published: March 2012

After ethylene diamin tetra-acetic acid (EDTA) chelating pretreatment, in unbleached pulps the content of metal ions Mg2+、Mn2+、Fe3+、Zn2+ and Cu2+ are reduced in varying degrees by atomic absorption spectroscopy analysis, among the ions, the maximum removal rates are Cu2+ and Mg2+. And when the added amount of EDTA is 0.6%, the removal result of metal ions is the best. After chelating pretreatment, the pulp’s brightness has been increased about 4.3%ISO~5.2%ISO, the pulp’s hardness has been reduced by 0.7%~1.0%, and the pulp’s viscosity has been kept well. Besides, when the added dosage of EDTA is 0.6%, the increasing of whiteness and the decreasing of hardness are the greatest. Through the contrast research of photocatalysis bleaching to the two pulps of before and after pretreatment, the results has been found that the brightness of photocatalysis bleached pulp been increased about 3.0%ISO, and the decreasing rates of hardness reach to the maximum, and the viscosity remains well.
Distributed Control System of Ceramic Material Kiln Based on MVC
Authors: Yang Sheng Quan , Liu Bai Lin , Pei Chang Xing
Published: March 2012

The paper proposes and develops a distributed control system of ceramic material shuttle kiln control of MVC pattern based on the current ceramic material shuttle kiln control in which exist plenty of disadvantages such as wasting energy sources, low efficiency, bad precision and long periods, etc. Firstly, it introduces the basic theory and the system structure graph of the MVC pattern, and discusses in detail the design layer frame and structure characteristic of control system based on MVC pattern. Finally, under the environment of the Delphi, this paper illuminates the material realization of the MVC form of the total control system with adopting the multi-thread shared same buffer method. Practice development shows that the MVC pattern can separate easily the interface of operator and computer, operation logic and data disposal, which makes the total control system have the fluent trait, the spread trait and the easy maintenance trait.
Environmental-Friendly Electropolishing of 304 Stainless Steel Surface
Authors: Men Chuan Ling , Wang Wan , Yang Bin , Wang Qi , Zhang Hua
Published: March 2012

304 stainless steel is an indispensable and widely used material in our modern society. Recent development in the industry requires that the 304 stainless steel be very pure and have exceptionally smooth surfaces which cannot be achieved by traditional machining. The existing electropolishing solution of 304 stainless steel suffers from bad polishing effectiveness, high cost, environmental pollution and so on. In this work, we study the process characteristics of pulsed electrochemical polishing with environmental-friendly solutions in pursuing good polishing effectiveness, high efficiency, no environmental pollution and low cost. Successful attempts have been demonstrated with comparable results as traditional methods. The best recipe in our study includes: H3PO4 is 600ml/L, H2SO4 is 275ml/L, H2O is 125ml/L, polyethyleneglycol is 8-10g/L, glucose is 10-15g/L; and electropolishing for 4-5min at a current density of 50-55A/dm2, a polishing temperature of 55-60°C and a pulse duty ratio of 80%.
Cytotoxic Responses and Potential Health Effects of Nanosized ZnO on Tetrahymena Thermophila
Authors: Chen Jun , Lu Yan Guang , Sun Cheng
Published: March 2012

Several manufactured nanoparticles (NPs) are increasingly used in consumer goods. However, NPs may also have ecotoxicological effects after being discharged into the environment. Study of biological effects of NPs with organisms representing different trophic levels helps to understand mechanisms of uptake and following biological effects of NPs. In this study, the uptake of nano-ZnO by Tetrahymena thermophila was observed with transmission electron microscopy (TEM) and electron spin resonance (ESR). The viability of Tetrahymena thermophila and its dose-effect relationship at various concentrations of the NPs were measured. The result revealed that the model organism exposed to dispersed NPs solution have oxidative damages though lethal test did not give relationship data between survival and nanosuspension concentration in the laboratory condition. Among the NPs analyzed, nano-ZnO exhibited a dose-dependent growth stimulation to the Tetrahymena thermophila cells and others showed non-significant impact. The rapid proliferation of Tetrahymena thermophila cells was further confirmed by levels of the succinate dehydrogenase (SDH), protein content of control and treated groups.
Constant-Wavelength Synchronous Fluorescence Spectrometry for the Determination of Polycyclic Aromatic Hydrocarbons in Water Samples
Authors: Zhang Ru Ping , Yuan Qiu Lan , Chen Ke Hua , He Li Fang
Published: March 2012

To establish a fast analytical method for simultaneous identification of polycyclic aromatic hydrocarbons (PAHs) in Water, a novel method of constant-wavelength synchronous fluorescence was proposed to the simultaneous determination of different PAHs in a mixture of 6 components. Combing the technique with a system that allowed a crude sample separation based on optimum conditions, detection conditions provided increased selectivity and sample information, and 6 PAHs could be identified and quantified by the corresponding synchronous spectra. The linear response of this method was in the range of 0~1000ng/mL (r≥0.9965), the relative standard deviations (RSD) were in the range of 0.24%~1.48% (n = 6). The detection limits were in the range of 0.028-3.45ng/mL. By using this method, real samples were determined directly and good results were obtained with the recoveries of 66.3%-103.9%, 73.9%-100.3% for spiked river samples
Development of Experimental System in Organic Synthesis
Authors: Hong Ro Bin , Wang Hong Mei
Published: March 2012

Organic synthesis chemistry is a very fast-growing discipline and it plays a very important role in chemistry. With the development of organic synthetic chemistry, organic synthesis device has also made greater development. At the same time, advances of organic synthesis device further promote the development of organic synthetic chemistry. This paper describes the working principle and system architecture of organic synthesis device and takes a case of di-n-butyl phthalate (DBP). At last, I foresee great prospect for organic synthesis
Nonlocal Size Dependence of a Softness Nanobeam with Large Axial Tension under Various Boundary Conditions
Authors: Li Cheng , Huang Wei Guo
Published: March 2012

The transverse dynamical behaviors of softness Euler-Bernoulli nanobeams subjected to a biggish initial axial force based on nonlocal elasticity theory are investigated in this paper. The size-dependent theory is considered and a small intrinsic length scale parameter unavailable in classical continuum mechanics is adopted into the problem model as a size parameter. The linear partial differential governing equation is derived from the Newton’s second law and the ordinary equation and its dispersion relation are gained from by the method of separation of variables. Five sets of supporting conditions are presented respectively including simply supported, fully clamped, flexible fixed ends, sliding supports ends and completely free ends. Vibration frequencies are obtained approximately and correlations between the natural frequency and the dimensionless small scale parameter are also analyzed and discussed in detail. It shows that an increase in small scale parameter and dimensionless initial axial tension causes natural frequency to increase, while an increase in the dimensionless stiffness of nanostructures causes natural frequency to decrease, or the nanostructural bending stiffness is enhanced when nonlocal effects are considered.
Effect of Acid Pretreatment on Photocatalysis Bleaching
Authors: Lei Yan Ping , Li Yao , Nong Bin , Huang Dong Mei
Published: March 2012

After H2SO4 pretreatment, in unbleached pulps the content of metal ions Mg2+、Mn2+、Fe3+、Zn2+ and Cu2+ are reduced in varying degrees by atomic absorption spectroscopy analysis, among the ions, the maximum removal rates are Cu2+ and Mg2+. And when the added amount of H2SO4 is 1.5%, the removal result of metal ions is the best. After acid pretreatment, the pulp’s brightness has been increased about 3.8%ISO-5%ISO, the pulp’s hardness has been reduced by 0.7%-1.0%, the pulp’s viscosity has been kept well. Besides, when the added dosage of H2SO4 is 1.0%, the increasing of whiteness and the decreasing of hardness are the greatest. Through the contrast research of photocatalysis bleaching to the two pulps of before and after acid pretreatment, the results has been found that the brightness of bleached pulp been decreased about 2.3%ISO-3.5%ISO, and the decreasing rates of hardness and viscosity respectively are almost the same after H2SO4 pretreatment.
Competing Effects of Band Filling and Steric Factors on Magnetic and Transport Properties of Double Perovskite
Authors: Zhang Qin , Qian Heng Chang , Pei Juan , Yuan Suo Jia
Published: March 2012

Ordered double perovskite oxides (Sr2-3xLa2xBax)FeMoO6 (0≤x≤0.3) have been investigated in this work. X-ray powder diffraction reveals that the crystal structure of the compounds changes from a tetragonal I4/m lattice to a cubic Fm m lattice around x=0.2. Due to the electron doping, the lattice constants increase with x. Owing to the competing contribution of electron doping and steric effect, Curie temperature of the compounds is almost unchanged. The resistivity of the parent compound shows a semiconducting behavior below room temperature, but those of the doped samples exhibit a metal-semiconductor transition. A correlation between the resistivity and metal-semiconducting transition temperature (TM-S) is observed. The resistivity and TM-S of the compounds decrease with x for x  0.2 and increase for x≥0.2.
Optical Properties of β-Si3N4 Studied from First-Principles Method
Authors: Chen Dong , Yang Kui
Published: March 2012

A detailed theoretical study of the optical properties of β-Si3N4 has been carried out by means of first-principles calculations using the plane-wave pseudo-potential method with generalized gradient approximation for the exchange and correlation functional. The calculated maximum absorption coefficient is 312000, which is in good agreement with the other calculated result. β-Si3N4 can be used as a photo-electronic material because its absorption curve has an abrupt limit at low energy region. The light beam with the frequency of 7eV～15eV can easily traverse the β-Si3N4 crystal. For the dielectric function, the strongest peaks are located at 6.5 and 9.0eV for the real and imaginary parts, respectively. Moreover, the calculated static dielectric constant is 3.21. Actually speaking, our calculated results should be testified by experiments in the near future.
Effect of Sub-Temperature Quenching Temperature on Microstructure and Property of 35CrMo Steel
Authors: Li An Ming , Hu Meng Juan
Published: March 2012

Influence of sub-temperature quenching temperature on the tensile strength, hardness and toughness of 35CrMo steel was studied. The microstructure characteristics of this steel after sub-temperature quenching were analyzed. The results showed in the range of 780~810°C the strength and hardness of the 35CrMo steel sub-temperature quenched increased with quenching temperature increasing, reached the highest strength and hardness at 800°C quenching and then began to decrease, while its elongation decreased with the quenching temperature increasing. The duplex microstructure of martensite and ferrite was obtained by sub-temperature quenching of 35CrMo steel. With the quenching temperature increasing, the ferrite content decreased and the distribution of ferrite morphology was changed. A small amount of strip ferrite existed in lath martensite lamellar when quenching temperature was 800°C and the impact toughness of 35CrMo steel was better than that of conventional samples 850°C completely quenched.
Effect of Thermal Process on the Microstructure and Property of Si/Al Composite with High Si Content
Authors: Li Yan Xia , Liu Jun You , Liu Guo Quan , Wang Wen Shao
Published: March 2012

50vol. %Si/Al composite was prepared by the separation of liquid and solid in semi-solid. The microstructures of composite were obtained using OM, SEM and EMPA. The primary Si particles distribute uniformly on the Al matrix which surrounds the Si particles and makes-up a continuous network. The thermal expansion coefficient and thermal conductivity of composites experienced different thermal process were examined. It shows that the thermal process history has a significant effect on the microstructure and properties. The residual stress and size of Si particles varied during thermal processing which were responsible for the thermal expansion coefficient alternation. The thermal process of high temperature insostatic pressing reduces the porosity in composite and improves thermal conductivity obviously
A Temperature Control Method about Two-Dimensional Correlation of Infrared
Authors: Li Wu Gang , Huang Shu Shi , Lin Tu Gan , Liu Jun Xian
Published: March 2012

In order to improve the efficiency and effectiveness of variable temperature infrared samples measurement, this paper proposes a kind of method called air indirect heating variable-temperature method which is to design a close box but there are two holes in and to make sample heated in box through use of air conduction and convection by temperature control circuit. This method can enhance the temperature of the test samples faster and is more effective in eliminating the temperature gradient within the sample, so the efficiency of experimental gets to improve. In another hand, this method is convenient in operation experimental. The paper also proposes a specific implementation technology
Photochromic, Kinetics, and Fluorescence of a Novel Diarylethene
Authors: Li Xiao Ting , Pu Shou Zhi , Li Hui
Published: March 2012

A new unsymmetrical photochromic diarylethene, 1-(2-ethyl-3-benzofuranyl)-2-(2,5 -dimethyl-3-thienyl)perfluorocyclopentene (1) was synthesized, and its photochromic properties and kinetics of the photochromic cyclization/cycloreversion were investigated. The results showed that the cyclization/cycloreversion process of these compounds were determined to be the zeroth/first order reaction.The compound exhibited good photochromism in hexane solution with alternating irradiation by UV/Vis light, and the maxima absorption of its closed-ring isomer 1c are 502 nm. The open-ring isomer of the diarylethene 1 exhibited relatively strong fluorescence at 402 nm in hexane solution (2 × 10-5 mol/L) and 412 nm in PMMA amorphous film when excited at 312 nm and 310 nm,respectively. The fluorescence intensity decreased along with the photochromism upon irradiation with 297 nm light and its closed-ring isomer showed almost no fluorescence.The fluorescence spectra of diarylethene 1o depended on the concentration.
Microstructure and Properties of TiO2 Thin Films Doped with Ni
Authors: Gao Fei , Liu Xiao Yan , Zheng Li Yun , Li Mei Xia , Jiang Rui Jiao
Published: March 2012

TiO2 and Ni-doped TiO2 thin films were prepared by DC magnetron sputtering. The effects of Ni-doping on the microstructure and properties were studied by atomic force microscopy (AFM), X-ray diffraction (XRD), UV-Vis spectra and photocatalysis tesing, respectively. The results show that TiO2 thin films were successfully prepared with smooth surface. When doped with Ni, the surface of TiO2 thin film was improved and the growth of anatase phase was also promoted. With increasing the sputtering power of Ni, the absorption edge wavelegth red shifted and the photocatalysis property of TiO2 thin films was increased and then decreased
Low Temperature Synthesis of Onion-Like Fullerenes Using Aluminum Hydroxide Supported Iron Catalyst
Authors: Chen Lei Shan , Wang Cun Jing
Published: March 2012

Synthesis of onion-like fullerenes was carried out by chemical vapor deposition in a tubular furnace using iron catalyst supported on aluminum hydroxide at 400°C, 460°C, 600°C, 700°C, 800°C, 900°C and 1000°C, respectively, in the presence of argon as carrier gas and acetylene as the carbon source. The samples synthesized were characterized by high-resolution transmission electron microscopy, and the effects of temperature on the morphologies of the samples were investigated. The results show that the onion-like fullerenes prepared at the low temperature 400°C had the highest purity and good quality.
LiFePO4 Battery Information Integrated System
Authors: Liu Xue Peng , Zhao Dong Mei
Published: March 2012

This paper discusses lithium iron phosphate ion/li-ion polymer battery charge information integrated system, the balance of battery management information system and battery management information system. Finally the integrated system software is given
Preparation and Swelling Dynamics Characterization of Poly(N, N-Diethylacrylamide-Co-Itaconic Acid) Intelligent Hydrogels
Authors: Li Xiao Qi , Zhang Nai Yan , Zhang Jun Hai
Published: March 2012

Poly(N,N-diethylacrylamide) (PDEA) hydrogel is known for their intelligent reversible swelling/deswelling behavior in response to temperature changes across a lower critical solution temperature (LCST) at around 31oC. In this study, itaconic acid (IA) was co-polymerized with N, N-diethylacrylamide (DEA) monomer to improve the swelling behavior and the total absorbing water. These copolymer hydrogels were prepared by changing the initial DEA/IA molar ratio and total monomer concentration. The chemical structure of hydrogels was characterized by fourier transform infrared (FTIR) spectroscopy. In comparison with the PDEA hydrogel, the equilibrium swelling ratio (ESR) of the hydrogels increase with the increase of IA content in the feed and the swelling dynamics behaviors of the different composition ratios of the P(DEA-co-IA) hydrogels on the different temperatures was investigated in detail.
Dynamic Encryption Algorithm Based on Rijndael
Authors: Liu Zhi Qiang , Han De
Published: March 2012

By introducing dynamic keys in this paper, we present a new encryption algorithm ,which is called dynamic encryption algorithm. The algorithm allows a key to encrypt the plaintext twice, producing two ciphertexts, so that each of them is different if the time is not same. Thus chosen plaintext attacks and known plaintext attacks will become infeasible .
Motion Characteristics of Composite-Type Sea Cage under Pure Wave
Authors: Li Chun Liu , Zhao Yun Peng
Published: March 2012

To study motion range changes with wave condition and motion relationship between cages, physical model experiments were carried out. The authors designed 2 models of composite-type sea cages. Experimental data obtained by the CCD data acquisition system. The experiment results showed that 1.in the same period, horizontal motion range,vertical motion range and inclination changes of float collar increase with wave height; 2.In the same wave height, horizontal motion range of the float collar increases with period; 3.The laws between vertical motion and period are not obvious 4.The laws between inclination changes and period are not obvious 5.Motion range of the first cage along the direction of waves is less than other cages.
Fault-Diagnosis of Machine Assembly Based on Fuzzy ES
Authors: Chen Jie , Zhang Ke Ren , Zhu Wei Guo
Published: March 2012

Based on the working flow of an automated machine assembly line, a fuzzy expert system (FES) for fault diagnosis of the assembly line is developed, which contains user interface, knowledge base, inference engine and history database. The FES adopts fuzzy forward chaining rule-based reference strategy and can predict the severity ponderance of faults according to certainty factor. In addition, fuzzy logic and linguistic terms are also introduced.
Preparation of Mesoporous TiO2 Thin Films and Research on Ultraviolet Photolysis Degradation of Dioxins from MSW Ash
Authors: Wang Lan , Luo Yong , Ren Jun Ling
Published: March 2012

Mesoporous TiO2thin films have been prepared with so1-ge1 method by using tetrabutyl titanate(TBT) as precursor and PEG (Molecular weight 3000)as template．The XRD spectrum of the samples of the thin films indicated that the sample crystallized into anatase phase under the 500°C．And the photocatalytic degradation study of dioxins from MSW ash had been carried out. The result showed that the Mesoporous TiO2thin films with anatase phase had high photocatalytic efficiency and was in favor of the regeneration and reuse.
Static Load Test and Analysis on Completed Deck Arch Bridge of Large-Span Reinforced Concrete
Authors: Wang Peng , Lv Dan , Liu Guo Qiang
Published: March 2012

Based on the requirements of load test technique on existing long-span concrete bridge, a deck arch bridge of large-span reinforced concrete was taken as the engineering background and the emulation analysis was done by building the bridge model using the finite element software Midas/Civil. The values of stress and deflection were measured and calculated. The results of the test show that the static working performance of the arch bridge is fine, the stiffness and load capacity meet the requirements of the design and the construction quality is good. It can provide references for the bridge design of the same type, learning about the actual working condition of the bridge and evaluating the working performance and load capacity of the bridge structure in the serviceability limit states.
Preparation of Conductive Films by In Situ Polymerization of 3-Alkylthiophene with Soluble MWNTs
Authors: Feng Qi Meng , Wang Su Min , Wang Qi Guan , Li Jian Ping , Chen Wei Xing
Published: March 2012

Conductive films of multi-walled carbon nanotubes (MWCNTs)/Poly3-alkylthiophene (P3TH) composite films were prepared by in-situ polymerization of 3-alkylthiophene at the presence of soluble MWCNTs. The MWCNTs were safely obtained via a two-step process assisted by microwave radiation, which were soluble in organic media. The obtained composites were examined by FTIR. By using UV-vis analysis it was found that there are strong interactions between P3TH and functionalized MWCNT. The TEM images showed the MWCNTs were homogeneously dispersed in P3TH. In addition, the resulting MWCNT/P3TH composites showed an electrical conductivity at the level 10-3 S/cm.
Optical Spectrum Analyses of ZnS1-XSex Ternary Material
Authors: Zhang Xiao Yan , Fan Guo Liang
Published: March 2012

The lattices motion equation and Born-Huang equation was established with the framework of modified random-element-isodisplacement (MREI) model, and the relationship of dielectric constants of lattice vibration and FT-IR reflectivity spectra in ternary mixed crystals ZnS1-xSex with the changes of composition x are discussed. The two-mode behavior of long-wave length optical phonon was studied, and the relation of TO-phonon frequency and LO-phonon frequency with composition was obtained.
Static Stiffness Analysis for the Parallel Bonding Mechanism of IC Chip Die
Authors: Peng Wei Dong , Wu Zhi Wei
Published: March 2012

Based on the parallel bonding mechanism of IC chip die designed, the static stiffness model is established. Static stiffness characteristic curves are drawn in whole working place through Matlab software, the infection which created by the left/right driving parts and connecting rods are analyzed. It proves that the parallel bonding mechanism designed meets the working requirements of IC chip die by these characteristic curves.
Study on Activated Carbon Prepared from Coking Fly Ash with KOH Activation
Authors: Ouyang Shu Guang , Fu Le Le , Wang Zhi
Published: March 2012

An orthogonal experiment is conducted to study the effect of activation temperature, activation time and the ratio of KOH to carbon material (i.e. the mass ratio of KOH to coking fly ash) on the adsorption capacities of the activated carbon made by using coking fly ash as the raw material and KOH the activating agent. The results show that the three factors can be ordered as activation temperature, activation time and the ratio of KOH to carbon material according to the significance in their effect on preparation of activated carbon from coking fly ash. In addition, the optimum activation temperature is 850°C, optimum activation time 30minutes, and the optimum ratio of KOH to carbon material 4:1. For the activated carbon made under these conditions, the iodine absorption capacity is 874.3774mg/g, specific surface-area 275.51m2/g, the mean pore diameter 47.75nm and total pore volume 0.1172cm3/g. As the proportion of mesoporouses reaches 71.57%, the activated carbon made from coking fly ash is good for absorption of those absorbates with higher molecular weights.
Analysis on the Effect of Bend Curve Radius to Inherent Characteristics of the U-Tubes
Authors: Zhang Li Na , Ma Zhen Yu , Liu Min Shan
Published: March 2012

For large-capacity steam generator, piping zone diameter of U-tube section is nearly 5m, the range of U-shaped bend radius is very large from Zero meters to 2.5 meters, this affects obviously the Vibration characteristics of heat transfer tube, this effect is researched using numerical simulation. Engineering formulas of natural frequency of U-shaped tube under different conditions are given. According the vibration-type, The lowest natural frequency of U-shaped tube is plane vibration frequency of the first order for adding one anti-vibration bar or not. Natural frequency of U-shaped tube increases significantly adding anti-vibration bars to bend, which is favorable to avoid the resonance frequency and severe vibration of U-shaped tube
Semiconductor Assembly and Test Production Line Simulation Technology
Authors: Xiao Can Jun , Li Jin Ming , Yao Jin
Published: March 2012

The technology to simulate the semiconductor production line, consider main factors that will impact the production, and get the output from the simulation system as the reference for production scheduling is presented in this paper. By initiating the simulation model, include the die delivery information, equipment occupation information and etc. base on the FIFO (first in first out) and other principles, simulated the discrete event with four categories and also for two basic actions. The prediction result aligned with the actual production by T test. Changing the scheduling schemes at the same initial state of product line, engineer could obtain the optimal scheduling scheme by the comparing different simulation results. This study is not only an efficient, visual scheduling method, but also it is the basis for product re-scheduling. And this technology has been deployed in one ATM (Assembly and Test Manufacturing factory) factory in Chengdu and gets positive feedback.
Study on HVOF Sprayed Nickel Coated MoS2 Coatings
Authors: Zha Bai Lin , Yuan Xiao Jing , Jiang Li , Zha Zhi Hong
Published: March 2012

The self-lubricating coating which is dense in microstructure with low porosity and degradation is sprayed by HVOF and the spray powder is Nickel coated MoS2 with 22%wt of MoS2. The mean bonding strength and hardness of Ni-MoS2 coating is respectively about 13.68 MPa and HRB94.5. Tribological performance is evaluated by the test of dry friction coefficient, which fluctuates from 0.25 to 0.32, while the wear granule is symmetry with a uniform distribution in size, moreover, the experiment results indicate the main wear failure mode of coating is abrasive wear.
Study on Damage Assessment of Reinforced Concrete Structure after Fire
Authors: Wang Yong Jun , Wang Zhen Qing , Zhu Li Nan , Lv Hong Qing
Published: March 2012

The damage assessment of reinforced concrete structure after fire was investigated by the pertinent theory of fuzzy mathematics and a mathematical model was established. With the establishment of the assessment system, the ascertain of the factorial weighting, the numeric quantification of various qualitative factors and quantitative factors and the application of fuzzy assessment , a new assessment system which based on the theory of fuzzy mathematics and was suitable to the damage assessment of reinforced concrete structure after fire was formed. An elaborate introduction on the establishment of the means and process of the assessment model was made, finally a practical example was showed to concretely illustrate the means and process of the assessment system.
Soybean Protein Acrylates Adhesive Research Progress
Authors: Pang Jiu Yin , Dong Li Na , Zhang Shi Cheng
Published: March 2012

At home and abroad it was summarized that soybean protein-acrylates compound adhesive preparation methods, and soybean protein composite adhesive in the preparation of soybean protein surface modification, and focusesing on the most commonly used silane coupling agent and azo compounds two modified methods are introduced in this paper. Also introduced soybean protein composite adhesive in man-made board, paper and other industrial field, the application of composite material application prospect.
The Basic Properties of the Composite Straw Veneer
Authors: Zhao Yan , Jiang Ya Ji , Pang Jiu Yin
Published: March 2012

the experiment through the environmental scanning electron microscopy (sem) research straw board and adhesive cementation interface surface morphology, found that the surface of the API adhesive diffusion performance than the UF. Uf resin agent in the surface of cover of the straw is thick and uneven, API adhesive is thin and cover of the formation of the uniform.
A Multi-Channel Data Acquisition System and its Performance Analysis Method Based on FPGA
Authors: Zhang Xue Feng , Luo Hong Xia
Published: March 2012

The multiplexer act as the inputs of analog signals, enabling multi-channel analog signal acquisition; then filtered through a certain signal processing to ensure the most effective analog signals into the ADC; after conversion, the digital output is saved in the temporary buffer zone of the FPGA. The whole process is controlled by the FPGA. Finally, apply to the DAC-ADC joint debugging, in compare to the results, 14bit precision is guaranteed.
Constant Pressure Water Supplying System with Frequency Conversion Based on PLC /HMI/VVVF
Authors: Wang Xiao Yu
Published: March 2012

The application of PLC、HMI and VVVF are introduced in constant pressure water supplying system with frequency conversion. The Principle diagram is analyzed, the Control System flow chart and Software program are designed. Through in-situ operation, the system has been proved good at reliability、stability、simplicity and intuition ，achieved constant pressure water supply and environmental protection requirements .
Synthesis of Al1.75Fe1.25(PO4)3 and its Selectivity to Li+ Exchange
Authors: Jiang Jin He
Published: March 2012

The ion-exchanger Al1.75Fe1.25(PO4)3of spinel type was prepared by means of the solid state reaction crystallization method. Its ion-exchange properties for alkali ions such as saturation capacity of exchange and distribution coefficient were determined. Al1.75Fe1.25(PO4)3was characterized by virtue of X-ray diffraction method. This inorganic ion-exchanger (Al1.75Fe1.25(PO4)3) has the saturation capacity of exchange for Li+higher than those for other alkali ions, the saturation capacity of exchange for Li+reaches to 7.1mmol/g, AlFe-720(H) has a higher selectivity of ion exchange for Li+than for other alkali ions. These result show AlFe-720 (H) has better memory and selectivity of ion exchange, and higher capacity of ion exchange for Li+. It is a kind of prospective ionic sieve for Li+.
Study on Technology of Food Waste Biological Aerobic Composting
Authors: Liu Yu De , Lan Yu Jing , Sheng Yi Jian , Shi Wen Tian , Zhang Yuan , Liu Yang , Cao Yan Ping
Published: March 2012

The compositions of food waste were complex, and the content of organic matter was high, so food waste was suitable for being disposed with aerobic composting manner. Degradation time, strains inoculation quantity, waste moisture content and temperature of degradation were the main factors of affecting the food waste treatment effect and through the regulation of these factors can change the organic matter degradation ratio of biological degradation. Make use of existing food waste processing equipment to dispose food waste, the inoculation amount of food waste was in accordance with the ratio that auxiliary material (including bacteria strains): food waste =4:3, meanwhile, the degradation temperature was adjusted to 40°C, and the moisture content was changed to 40%. After 7 days, the output materials of food waste degradation would be used in the cultivation of vegetables as organic fertilizer.
The Damping Analysis of the Laminated Composite Plate Considering Geometric Nonlinearity
Authors: Yang Kun , Mei Zhi Yuan
Published: March 2012

Considering geometric linearity and nonlinearity deformation form, the MSE and damping coefficient of the laminated composite cantilever plate were obtained with the elasticity theory based on the modal strain energy (MSE) method. The validity of the theory compute program was validated by the FEM program with the all layers 0° layup case. The longitudinal MSE of the plate at various lengths were investigated under the deformation form above. The damping coefficient of the laminated composite cantilever plate at various fiber orientations. The results are significant for sample fabricate of the laminated composite damping experiment.
Application of Improved BP Network in Failure Forecasting
Authors: Li Zhi Gang , Shi Bo Wei
Published: March 2012

An improved BP neural network prediction method is used for collecting pipe equipment failure prediction and comparing with the improved BP neural network in front, which demonstrates that the improved BP neural network algorithm to the collecting pipe failures has better predictive power.
The Environment-Friendly High-Elasticity Asphalt Mixture Using as Stress Absorbing Layer
Authors: Liu Jun Yong , Zhang Liu Jun , Kou Bo , Shen Peng
Published: March 2012

The rubber- fly ash modified asphalt mixture formula was made by comprehensive laboratory test. The mixture graduation was determined with improved Superpave design method. The new material had good performance through laboratory test. The overlay of old concrete pavement was analyzed by establishing finite element model. The layer-layers could set stress absorbing layers or not; Stress absorbing layer had a absorption effect on stress in cracks and inhibiting effect on crack expanding. The results show that: the stress-absorbing layer of new materials can significantly reduce the stress concentration in cracks, effectively prevent the development of reflection crack and has excellent crack resistance. Meanwhile the adaptability of new materials used as stress absorbed layer is verified