bluuebunny/crossref_metadata_2025 huggingface dataset:
Nano Aluminum Powders Oxidation in CO2 and O2 Environments
Authors: Pei Hong Bo , Liu Yang , Ren Hui
Published: September 2013

An experimental study of oxidation of nano aluminum (Al) powders in CO2 and O2 is described. The oxidation is studied using thermogravimetric (TG) measurements from room temperature to 1500°C. Partially oxidized samples are recovered and their compositions are analyzed using X-ray diffraction. The oxidation product morphology was examined using SEM. Dimensional properties of aluminum particles have a significant influence on the oxidation processes. The nano aluminum reaction onset temperature was much lower than micro aluminum. Distinctly different oxidation properties of nano aluminum powders were shown between CO2 and O2. nano aluminum powders could ignite in O2 at fairly low temperatures around 530 °C. However ignition for nano aluminum powders in CO2 didn't appeared below 1500 °C. There was a weight loss in the TG curves at around 1200 °C for nano Al-CO2 system. It was thought that small amount of carbon formed in the oxidation process. The XRD showed that both the nano aluminum oxidation products were α-Al2O3 in CO2 and O2.
Study and Analysis of MEMS Pressure Sensor Based on Applied Mechanics
Authors: Qi Li Feng , Liu Zhi Min , Xu Xing Ye , Chen Guan Zhong , Qing Xue
Published: September 2013

The relative research of low range and high anti-overload piezoresistive pressure sensor is carried out in this paper and a new kind of sensor chip structure, the double ends-four beam structure, is proposed. Trough the analysis, the sensor chip structure designed in this paper has high sensitivity and linearity. The chip structure is specially suit for the micro-pressure sensor. The theoretical analysis and finite element analysis is taken in this paper, which provide important scientific basis for the pressure sensor development.
Research on Industry Manufacturing Materials Based on Managers Compensation and Fair Value Changes
Authors: Zhou Lin Jie
Published: September 2013

Managers play a decisive role in the allocation and utilization of industry manufacturing materials in industrial enterprises. Research has demonstrated that the profit and loss from fair value changes has significant impact on managers compensation. This article studies the profit and loss from fair value changes and sensitivity of Chinese managers compensation in industrial enterprises and finds out that the current managers compensation design cannot reflect the revenue information and profit and loss changes in fair value measurement effectively, and there is non-equivalence in impact of profit and loss. Therefore, new compensation stimulation mechanism based on performance contribution and weight ratio should be came up with as early as possible, to guide and maintain the positive relationship between profit and loss from fair value changes and managers compensation, and adjust the stickiness between them to avoid the negative impact on the utilization of industry manufacturing materials caused by distorted managers compensation system.
Using BP Neural Network to Predict the Sinter Comprehensive Performance: FeO and Sinter Yield
Authors: Chen Wei , Wang Bao Xiang , Chen Ying , Zhang Hui Juan , Li Xing
Published: September 2013

Sinter is the main raw material for ironmaking. It is very important to control sinter chemical composition and comprehensive performance. In this paper, a predictive system for sinter chemical composition FeO and the sinter yield was established based on BP neural network, which was trained by actual production data. The MATLAB m file editor was used to write code directly in this paper.The application results show that the prediction system has high accuracy rate, stability and reliability, the sintering productivity was improved effectively.
Experimental Research of Sulfate Corrosion Resistance of Fresh Concrete with Fly Ash
Authors: Dong Qing You , Zhang Yin Hua , Feng Li Ping , Jin De Bao , Zhang Jing Shu , Wang Chao Cheng
Published: September 2013

The sulfate corrosion resistance of concrete admixed with fly ash was tested. Specimens were completely immersed in sulfate solution which was aimed at simulating the real corrosion environment. The compressive strength of fresh concrete specimens and precast concrete specimens in different corrosion age and corrosion environment was measured when the mixing amount of fly ash is 0%, 20% and 40%. The evaluation index is corrosion resistance coefficient of compressive strength Kf . The test results indicate that the sulfate corrosion resistance of fresh concrete is better than that of precast concrete during experimental period of 270 days; the sulfate corrosion resistance of fresh concrete can be improved by mixing a certain amount of fly ash.
The Development and Application of Non-Shrinking Composite Silicate Insulation Material
Authors: Zhan Yong Liang , Chen Hai Yang , Hou Xing Hua , He Fei
Published: September 2013

Non-shrinking composite silicate insulation material has advantages of low drying shrinkage, density, thermal conductivity and good thermal insulation which withstands high temperature and militates in favor of specially shaped structural member construction, etc. This article describes raw materials and the production process of the above material, discusses thermal insulation characteristics, technical performance and the features of use and particularizes the application effect in the project.
Analysis and Experiment on the Chuck for Equivalent Strength Connection of Wire Rope
Authors: Chen Hai Zhou , Zhang Xiao Yong , Li Wei , Wang Yu Ling , Zhang Qi Lin
Published: September 2013

Analyze the safety of the wire rope fixtures through experiment while constructing the COMAC ministry of installed plant. Pointed out the proper use of the provisions of the steel erection specification, and the number of provisions chuck is unsafe. The timely replacement of the shackle wire rope connection ensured the security of the lift process through experiments. This method can provide some experiences to the construction and fabrication of the steel member of the project.
Study on Bending Behaviors of Φ500 PHC Pile
Authors: Xia Xiong , Xu Huang , Xu Han Dong , Gu Rong Jun
Published: September 2013

Because of the smaller cross-sectional area, the flexural properties often become the controlling factor in PHC pile. Φ500 PHC is widely used as an engineering design pile in the Yangtze River Delta region. On the basis of the analysis of pile soil interaction mechanism, the single Pile under different conditions is discussed. The parameters are discussed in this article are PHC piles wall thickness, horizontal loads, bending moments, pile elastic modulus and other engineering parameters.The studies show that, the distribution of bending moment and shear is significant in 2 ~ 4m below the top surface of the pile, and after 6m, the value of them closes to 0. The main sphere of influence of the single pile bending moment and shear is concentrated at 3 ~ 4m below the top surface of the pile. Along with horizontal load enlargement, the maximum bending moment is mainly concentrated at 1.5 m below the top surface of the pile, and the maximum pile shear is mainly concentrated at 1.9 m below the top surface of the pile. Along with bending moment on the top of the pile enlarge, the maximum bending moment is mainly concentrated at 2.5 m below the top surface of the pile, and the maximum pile shear is mainly concentrated at 3.0m below the top surface of the pile. Optimize sectional area of Φ500 PHC should be selected as 0.17, and the wall thickness should be selected as 170mm.
Static Test and Bond Stress Analysis of the New Kind of Anchor for CFRP Tendon
Authors: Chen Bei , Li Shi Quan
Published: September 2013

A new kind of anchoring option is researched. The results show that the optimal scheme is feasible and effective. The main steps and programs of the static tension test are introduced. The testing and calculation methods of bond stress are introduced. Based on the actual engineering data, the research of bond stress under design tensile is proposed. A simplified model of the bond stress is established according to the experimental data. The results of checking show that bond stress distribution curve and the simplified model agree with the experiment. Maximum error is less than 7.2% and 7.0% respectively.
Selective Transport Capacity for K+ and Ca2+ over Na+ of Leaf Sheath is Correlated with Salt Tolerance of Energy Plant Sweet Sorghum
Authors: Ding Tong Lou , Song Jie , Fan Hai , Wu Hai Dong , Liu Yan , Zhang Shi Chao , Wang Bao Shan
Published: September 2013

Two sweet sorghum varieties (salt tolerant Jitianza 2 and salt sensitive Lvneng 1) were used to investigate their adaptation to NaCl stress under different cultivation conditions of potted cultivation and field cultivation, and selective transport capacity for K+ over Na+, and Ca2+ over Na+ of leaf sheath. NaCl stress decreased Pn, Fv/Fm, fresh weight of leaf sheath and leaf blade, field yield in both varieties. NaCl stress induced Na+ accumulation while it decreased K+ and Ca2+ levels in leaf sheath and leaf blade of both varieties. The increase in Na+ of leaf blade and the decrease in K+ and Ca2+ of leaf blade were greater in Lvneng 1 than those in Jitianza 2. Furthermore, the Na+, K+ contents in leaf sheath of Jitianza 2 were significantly higher than those of Lvneng 1 under NaCl stress. The selective transport capacity for K+ over Na+, and Ca2+ over Na+ of leaf sheath in Jitianza 2 was significantly greater than that in Lvneng 1. Pn, Fv/Fm, stem stalk field, ear field, juice yield, stalk Brix, sugar content of Jitianza 2 were significantly higher than those of Lvneng 1, which was correlated with stronger selective transport capacity for K+ over Na+, Ca2+ over Na+ of Leaf Sheath of Jitianza 2.
The Luminescence of Rare Earth Composite Micelles in Different Polarity
Authors: Li Zhao Ye , Xue Zhao Jun , Kong Li Jun
Published: September 2013

The luminescence of rare earth composite micelles was measured in different polarity. The polarity of complexes was changed with the molar ratios of block copolymers, trivalent europium (Eu (III)) ions and 1,10-phenanthroline (Phen). When 4-vinyl pyridine (4VP) coordinated with central ions Eu (III), the improved asymmetry of composite micelles resulted in higher polarity. The higher polarity strengthened the ability of electron transition, which improved the luminescence of complexes. When Phen participated in coordination, the polarity was improved further. The strongest luminescence of complexes could be obtained by changing the molar ratios of block copolymers, Eu (III) ions and Phen.
Effect of Calcining Temperatures on the Morphology and Crystallinity of Strontium Doped Hydroxyapatite Nanopowders
Authors: Mardziah C.M. , Sopyan I. , Nik Roselina N.R. , Hyie Koay Mei
Published: September 2013

Strontium appears to be one of the most effective substances for the treatment of osteoporosis and other bone-related conditions. Since calcium and strontium share the properties of group 2A elements, strontium can replace calcium in bone without much difficulty. Additionally, non-radioactive strontium also deposits in bones and behaves like calcium; therefore it enhances bone density and resistance to osteoporotic fractures. In this study, 10 wt% strontium doped hydroxyapatite (SrHA) nanopowders were synthesized through a sol-gel method. The obtained gel was dried and subsequently subjected to 500, 600, 700, 800 and 900 oC calcination. At 500°C calcining temperature, the SrHA nanopowders are still in amorphous state but starting to become crystalline when heated to 600°C, 700°C and 800°C. Increasing the temperature to 900 °C originates more intense and sharp peaks, corresponding to an increase in the mineral crystallinity, which is compatible with particle growth. Morphological evaluation by FESEM shows that the nanopowders calcined at 500°C and 700°C are in spherical shape and highly agglomerated. At 900°C the SrHA particles are still in globular shape with a mean diameter of 1-2 μm. The primary particles have diameter of 30-50 nm in average. No secondary phase was detected in these nanopowders, correlated to nearly 100 % presence of HA.
Nanostructural Materials for Dye-Sensitized Solar Cells
Authors: Cheng Chieh , Ho Chia Chih , Wu Chia Tien , Ko Fu Hsiang
Published: September 2013

The self-organized hollow TiO2 hemisphere with a height of 130 nm and a diameter of 200 nm was formed. Highly ordered TiO2 nanotube arrays of 200-nm pore diameter and 700-nm length were grown perpendicular to a FTO substrate by infiltrating the alumina pores with Ti (OC3H7)4 which was subsequently converted into anatase TiO2. The structure was treated with TiCl4 to enhance the photogenerated current and then integrated into the DSSC using a commercially available ruthenium-based dye. The dye-sensitized solar cell using self-organized hollow TiO2 hemispheres under porous alumina with TiO2 nanotubes inside as the working electrode generated a photocurrent of 5.00 mA/cm2, an open-circuit voltage of 0.58 V and yielding a power conversion efficiency 1.77 times the conventional nanoparticle-based DSSC.
Effect of Higher Thermoplastic Starch Content on TPS/LDPE Plastics
Authors: Tang Hao , Jiang Hai Tian , Guo Bin , Li Pan Xin
Published: September 2013

The TPS/LDPE starch plastic was prepared in the presence of the compatibilizer after the preparation of thermoplastic starch (TPS). The effect of starch content to properties of TPS/LDPE was studied by DSC, TG, electronic tensile machine and SEM. The results showed that the system had a good compatibility between TPS and LDPE, and the thermal properties were improved because of the forming of chemical bonds. When the TPS content is more than 58.54%, the tensile strength and elongation at break decreased dramatically, the main reason is the transformation of the continuous phase and the dispersed phase.
The Simulation and Analysis of Hydro-Pneumatic Suspension Performance Based on AMESim
Authors: Zhang Zhu Lin , Meng Guo Qiang , Dai Ru Quan
Published: September 2013

With all sorts of advantages, the hydro-pneumatic suspension is receiving increasing attention. First, in this paper the mathematical model of 1/4 hydro-pneumatic suspension was built; Second, the suspension model was developed using the AMESim software; Finally, we get the influence of various hydro-pneumatic suspension performance parameters by changing their values and draw a conclusion. The result shows that this method is efficient and feasible.
LXI Precision Time Protocol Applied Research
Authors: Li Ming , Wang Chun Ping , Wang Zhi Qiang
Published: September 2013

In order to meet the real-time demands of some equipment networked test, the time synchronization techniques of ATS based traditional instrument buses are compared with the techniques of LXI ATS. Accordingly,the necessity of LXI ATS time synchronization technique study is put forward. The sorts of time synchronization techniques based on Local Area Network are analyzed. In addition, some methods which could improve the level of LXI data real-time communications are presented. Afterwards, technique realizations of PTP are studied in detail. Local Area Network techniques and IEEE 1588 Precise Time Protocol are adopted in the LXI Automatic Test System which designed in the paper, and the level of time synchronization precision in the system is improved.
Multi-Feature Load Detection Algorithm
Authors: Donciu C. , Ardeleanu Andrei , Temneanu Marinel
Published: September 2013

Each appliance determines a specific variation in power consumption when is switched from one state to another. Analysing the profile of this variation, a set of features can be extracted and further used to detect the consumers transitions. Based on this principle, a multi-feature load detection algorithm is presented in this paper. The algorithm detects the transient profiles, extracts their features and by comparing them with the ones from a database it can detect which consumer generated that transient profile. Providing this information to the user, can offer him an overview of how energy is consumed and help him detect possibilities to reduce the consumption.
Preliminary Study of Safety Analysis of Pb-Bi Cooled Small Power Reactor with Natural Circulation
Authors: Trian Novi , Waris Abdul , Viridi Sparisoma , Zaki Su'ud
Published: September 2013

We report our study of the safety analysis in design of small power reactor which design based on the concept of a long-life core reactor cooled by lead-bismuth eutectic (LBE). The motivation of these studies is in order to design a next generation of reactors, we need to design a type of reactor that has inherent safety. We designed the small Pb-Bi cooled reactor with MOX-Nitrate as a fuel. In order to study the safety analysis of this reactor we conducted studies of chimney length effect to coolant flow rate in natural circulation and dependency of outlet temperature with coolant flow rate. From this work we obtained the optimum height of chimney at 15 m for the lead-bismuth eutectic flow rate 3500 kg/s and also we found the dependency of outlet temperature with lead-bismuth eutectic flow rate.
Urban Low-Carbon Transport, Model of Pure Electric Vehicle Development Typical Research Based on Hangzhou Pure Electric Taxi Demonstration Operations
Authors: Zhu Fang Siyu , Chen Xiu Miao , Ye Rui Ke , Bao Jian Qiang
Published: September 2013

Pure electric vehicles, as an important part of China's strategic emerging industries with good economical potential and ecological environment and social benefits, are increasingly becoming the strategic choice to response to global warming and to achieve low-carbon transformation of urban transport. Hangzhou pure electric taxi demonstration project is a model for new energy vehicles first try, which has formed the complete and operating norms for pure electric taxies operating system and business mode. Based on the typical research of Hangzhou pure electric taxi demonstration operation status quo, the research group has summarized the practical experience of the demonstration operations and some problems of the mode of development of pure electric vehicle battery and supporting facilities, and put forward some policy recommendations.
Smart Grid Construction Based on Perspective of the Development of Servicing Clean Energy
Authors: Nie Jing
Published: September 2013

With the economic and social development, the supply and development of energy have been the outstanding problems affecting human survival and development. On the basis of ensuring the safe and efficient supply of clean energy, building a strong and smart grid, can be conducive to energy conservation and smart electricity. Through analysis of the development and status quo of clean energy and discussion of the features and advantages of the strong and smart grid, the article proposed the development of a strong and smart grid had important significance of advocating low-carbon economy, promoting the transformation of energy supply, and the protection of for the sustainable economic and social development. Finally, the article gave the outlook for the future of the development of a strong and smart grid.
The Status Quo Analysis of New Energy Industry Standardization System in NingXia Province
Authors: Li Ming Bin , Yang Ping Qiang , Mu Cai Xia
Published: September 2013

In the paper, new energy industrial standardization status quo of NingXia Province is analyzed. The frame diagram of new energy standard system of NingXia Province is established based on the standard retrieval database. According to the new energy industrial standard system frame diagram, reasons of restrict the new energy industry development of NingXia Province are analyzed and some suggestions are proposed. Finally, some proposals about new energy industry standard system construction are offered.
Contingency Analysis Model of Electrical Power Systems Based on Central Angles from PMUs
Authors: Lopez G.J. , Gonzalez J.W. , Diez A.E. , Isaac-Millan Idi Amin , Cardona H.A. , Leon R.A.
Published: September 2013

This paper addresses applications of Central Angle, a concept being widely spread in the context of Phasor Measurement Units (PMU). Making reference to Cutset Area theory, the Central Angle is calculated. A digital model to give alarms for operators to prevent feasible blackout conditions is proposed and tested in a Colombian electrical network. The performance and robustness of the model is verified with multiple contingencies.
Simulation of Microstructure and Properties of As-Cast Al Alloys
Authors: Li Xiao Mei , Yu Jing Jing , Yu Jin
Published: September 2013

Two as-cast Al-Zn-Mg-Cu alloys with different alloying element contents have been studied in terms of precipitation phases and properties. The modeling results show that different composition of the alloy has a significant effect on the microstructure and the tensile properties, while the electrical conductivity is not affected by the variation of the alloy composition.
Research Progress on Hydrate Self-Preservation Effect Applied to Storage and Transportation of Natural Gas
Authors: Wen Yong Gang , Chen Qiu Xiong , Chen Yun Wen , Fan Shuan Shi
Published: September 2013

Storage and transportation of natural gas with NGH method is a kind of novel technology developing rapidly at domestic and overseas currently. The stability and dissociation characteristic of hydrate at different temperature and pressure is a significant basis on its application and development. The existence of anomalous self-preservation effect indicates that gas hydrates have favorable stability in special low temperature range, and it provides theoretical and experimental basis for storage and transportation of natural gas with NGH method. The paper reviews study history and research development of hydrate self-preservation effect, and points out challenges for developing storage and transportation technology of natural gas with NGH.
Effect of Grassland Degradation on Arbuscular Mycorrhizal Symbiosis of Leymus chinensis (Trin.) Tzvel. in Different Steppe Types
Authors: Wu En , Bai Li Hua , Cao Li Xia
Published: September 2013

This study compared the arbuscular mycorrhizal symbiosis of Leymus chinensis between meadow steppe and typical steppe in the West Ujimqin banner. Mycorrhizal colonization rate and number of rhizosphere spore of L. chinensis decreased from light to heavy grassland degradation in the both of steppes. The mycorrhizal colonization rate and rhizosphere spore number of L. chinensis decreased significantly at moderate-heavy degradation stages in meadow steppe, and the typical steppe occurred in light-moderate degradation stages. These results indicated that the mycorrhizal symbiotic patience of L. chinensis in typical steppe is lower than that of meadow steppe.
The Shielding Gas Influence on the Laser Beam Welding of 2205 Duplex Stainles Steel
Authors: Bárta Jozef , Vrtochová Tatiana , Krampoťák Peter
Published: September 2013

Procedures for welding duplex stainless steel conventional arc welding methods were studied by several authors and nowadays and recently they are well handled. Todays practice requires application of processes providing excellent weld joint quality, quick production and possibility of automation. Therefore the application of laser beam welding has a great potential of application. This research paper describes weldability of DSS 2205 by laser beam. The main factor examined in the process of welding duplex steel is the shielding gas and his effect on weld joint properties. Welding was performed with gaseous CO2 laser machine Ferranti Photonics AF 8 having 8 kW max. output power and wave length 10.6 µm. Microstructure of weld joint specimens was analysed in order to observe the phase composition ratio. Samples are welded with same process parameters except of shielding gas. Helium and nitrogen were applied as a shielding gas to examine their influence in comparison to weld joints welded without shielding gas. Since the nitrogen promotes the austenite formation, its application brought the best results having almost same phase composition as base material.
Analysis of Flow Instability for OTSG in Movable Nuclear Power Devices
Authors: Hou Su Xia , Luo Ji Jun , Xu Jun , Zhang Qing Hua
Published: September 2013

The instability occurring in OTSG (Once-Through Steam Generator) of movable nuclear power plants is presented by the multivariable frequency domain theory. As concerning coupling interactions of OTSG tubing, it is more efficient for analyzing the instability of OTSG compared the common single variable method. A mathematical model for the system is derived from the fundamental equations by using the perturbation, Laplace-transform and the nodalization techniques. The stable boundary and parameters which influence the stability of the system are evaluated through computer simulation.
Molecular Dynamics Simulations of Atomic Structure in Cu46Zr46Al8 Metallic Liquid and Glass
Authors: Zhang Dong , Gao X.M. , Xiao Xu Yang , Cheng Z.F. , Xia J.H.
Published: September 2013

The microscopic structure Cu46Zr46Al8 alloys were investigated by means of molecular dynamics simulations. This work gives the structure properties including partial pair-correlation function, pair analysis technique and Voronoi indices, and the temperature dependence. The simulated pair-correlation function is consistent well with the experimental one. We found that the the fractions of icosahedra and the distorted icosahedra increase with the decreasing temperature and become into the dominant clusters in the bulk metallic glass. At the meanwhile, we found that the icosahedra and the distorted icosahedra around Cu, Zr and Al are different. The Cu-center and Al-center icosahedra and the distorted icosahedra increase with the decreasing temperature, but The Zr-center icosahedra and the distorted icosahedra decrease with the decreasing temperature.
Hole Expanding Formability Performance and Fracture Appearance Analysis of High Strength Automobile Sheet Metal
Authors: Guan Bin
Published: September 2013

The formability performance of automobile steel is one of the most important factors of product. This work presents the formability behavior of high strength automobile sheet metal by hole-expanding test. The test principle and experiment procedural are introduced. The average expansion ratio of 30 selected samples was 109%. The fracture appearance of two deviant samples and a normal one are compared and analyzed. The initial manufacturing flaw and low dimple concentration level are the possible reasons for the remote date.
Study on Abrasion and Corrosion Resistance of Ti-6Al-4V Alloy Implanted by Carbon in Hank's Simulated Body Fluid
Authors: Liang Cheng Hao , Yu Qian Qian , Li Jie Lan , Huang Nai Bao , Yang Hui
Published: September 2013

The corrosion characteristic of Ti-6Al-4V alloy implanted by carbon was investigated in Hanks simulated body fluid. The results indicated that a disordered film, which was composed of TiC and Ti by XRD analysis, was formed on the surface of Ti-6Al-4V when Carbon was implanted. Electrochemical tests manifested, after implanted, the alloys corrosion potentials and increased, polarization resistance were increased, and anodic polarization current density decreased in Hanks simulated body fluid. The electrochemical properties were improved. The reason was that the disordered carbide film formed on alloys surface prevented alloying elements form dissolution and enhanced its corrosion resistance. For C implanted sample, the anodic polarization current density was increase when the alloy was abraded. It manifested that friction and abrasion conditions made corrosive environment more serious and accelerated the corrosion process. The alloys friction coefficient and abrasion rate were obviously decreased, and its hardness was increased when it was implanted C.
Field Synergy Principle Base on Divergence Equation for Heat and Mass Transfer of Porous Media
Authors: Yu Long , Yu Shu Rong , Li Chun Ling
Published: September 2013

According to field synergy principle, analyzes the relationship of the effect for heat transfer with mass transfer in porous media. Using the divergence equation, express the degree of gas phase velocity vector and temperature gradient velocity in the process of heat and mass transfer, and the field synergy angleθplay an important role in heat and mass transfer either global or partial. In the result, the heat and mass transfer would be constrained by each other whileπθ>π/2, and be promoted whileπ/2>θ0, and be independency whileθ=π/2. The divergence equation of field synergy principle present the method of strengthen the heat and mass transfer in porous media.
Study on the Promoting Effect of Additive on the Calcium-Based Sulfur-Fixing Agent
Authors: Zhu Ying , Liu Chuan , Yang Qiao Wen , Li Peng Fei , Sun Yong Jun , Xu Dong Yao
Published: September 2013

Based on the removal of SO2 as the research background, this paper focuses on the research of mono-component experiment and orthogonal experiment of compound sulfur-fixing agent composed of shell powder and red mud (at the mass ratio of 8:2) at the temperature of 1000°C and Ca/S was 2.0, by adding manganese dioxide, fly ash, magnesium oxide and potassium carbonate as the sulfur-fixing additive. The experimental results showed that the sulfur fixation capacity of desulfurizer is increased to different extents and the optimal ratio to additive is obtained after addition of the additive.
Influences of Particle Sizes on Properties of Natural Rubber/Waste Ground Rubber Powders Blends
Authors: Liu Jun Liang , Liu Ping , Tang Xiao Qiang , Zeng Dong , Zhang Xing Kai , Yang Wen Pan , Wang Ming Ming , Zhang Ming
Published: September 2013

In this paper, the blends of natural rubber with waste ground rubber powders have been prepared by mechano-chemical activation method. The influences of particle sizes on both processing performances and mechanical properties have been investigated. The results indicated that: the blends with waste ground rubber powders of smaller particle sizes approached to higher surface tensile and easily mechano-chemical activation, which led to the formation of complete homogenous re-vulcanization cross-linking structure and resulted in the improvements of the whole performances of the final products. The tensile strength, the elongation at break and tear strength approached to the highest value of 20.7MPa, 530% and 33.0 kN/m as the 100mesh waste ground rubber powders were used as the starting materials.
Evaluation System of Air Distribution in Gymnasium
Authors: Ting Liao
Published: September 2013

Based on the characteristics and special function of gymnasiums, this thesis made a comprehensive assessment on mode selection of air distribution in gymnasiums by proposing that air distribution in gymnasiums be totally evaluated from the standpoints of degree of satisfaction in auditoriums and playing areas, improved air exchange efficiency and improved afterheat elimination efficiency. The thesis made a general conclusion of evaluation system of air distribution established by domestic researchers on gymnasiums, hoping to make contributions to the gymnasium undertaking of our country.
Optical Absorption Measurements at High Temperature (500 °C) of Oxide Nanoparticles for Application as Gas-Based Nanofluid in Solar Thermal Collector Systems
Authors: Cretì A. , Epifani M. , Taurino A. , Catalano M. , Casino F. , Lomascolo M. , Milanese M. , de Risi A.
Published: September 2013

In this paper we report on optical absorption measurements performed on several metal oxide nanoparticles (ZnO, CeO2, Fe2O3) as a function of temperature in the range 25500 °C, in order to study the optical properties, and to investigate how several heating cycles could affect nanoparticle structural stability and absorption characteristics. These are quite important issues to be investigated in order to assess the possibility to use such metal-oxide nanoparticles as gas-based high temperature nanofluid in concentrated solar power (CSP).
Evaluation of Water Quality of Rural Drinking Water and Countermeasure Research in Luquan City
Authors: Li Fang Hong , Liang Xu Li
Published: September 2013

The rural drinking water safety is an important issue for people's livelihood. For Luquan city, of Hebei province in China, drinking water was sampled through site investigation, and the water quality was analyzed used comprehensive index method. The results show that: the water type is IV in the investigation area, which is not suitable for drinking in a long time. The corresponding measures were proposed combined with the real conditions, which could provide theoretical guidance and policy reference for improvement of rural drinking water management mechanism.
Combined Forecasting Model Based on the Rough Set to Predict the Chinese CO2 Emissions
Authors: Zhou Jian Guo , Zhang Xi Gang
Published: September 2013

The text is to establish a combined forecasting model based on the Rough Set (RSCM) ,on the basis of BP Neural Network Model and Support Vector Machine ,in consideration of the Chinese CO2 emission :uncertainty ,imperfection and small sample properties. We predict Chinese CO2 emissions for the same period to verify the effectiveness of combination forecasting model based on rough set, based on the data of the Chinese CO2 emissions from 1990 to 2011. and use this model to predict future Chinese CO2 emissions.
The Research about the Wind Turbines Pitch Control
Authors: Wang Chen , Meng De Zhou , Bo Xu Fang
Published: September 2013

Based on the background of wind power, considering the wind blade sweep area on the uneven distribution, this paper is using the PID control algorithm to control the pitch system. At the same time, this paper is using Siemens SCL to programming, simulating on the experimental platform. Simulation results show the validity of the theory and the feasibility of the system, realizing variable pitch control of fan blade.
N,Fe Nano-TiO2 Doped on the Fly Ash Forming Absorbent and the Photocatalytic Activity Study
Authors: Liu Yong Mei , Liu Zhuan Nian , Han Xiao Gang
Published: September 2013

nanoTiO2photocatalyst modified by N and Fe3+ion were loaded on fly ash forming adsorbent (FFA) using the sol-gel dip-coating technique. The structure and properties of the samples were characterized by UV-Vis spectrum, SEM and XRD. The related influencing factors were also discussed. The results showed that modified TiO2was immobilized on the surface of FFA in the form of nanocrystalline and an apparent absorption peak appears in the visible region of photocatalyst doped with N,Fe ion. Moreover, under visible light irradiation for 6h, the degradation rate of 50mg/L of methylene blue by loaded catalyst reached 92.6 %.
An Evaluation of Critical Raw Materials for China
Authors: Yang Jie , Zhu Hong Luo , Ma Lin Wei , Li Zheng
Published: September 2013

This manuscript aims to apply the method of criticality matrix to evaluate critical raw materials for China. The matrix includes two dimensions, the supply risk evaluated by net import dependency and import concentration, and the economic importance evaluated by value-added value of consumption sectors. The results indicate that the most critical raw materials for China are Chromite, Cobalt, Manganese, Nickel, Iron ore, and Niobium & Tantalum.
A Novel Photosynthetic Bacteria Solar Cell
Authors: Wang Li Qiu , Deng Xin Xin , Tian Liang
Published: September 2013

In this paper, a novel photosynthetic bacteria solar cell with Rhodopseudomonas as the electricity generation bacteria was designed and prepared, and photo current changing with the time of the cell was investigated by testing current-time（i-t） curve under alternating light and dark. The results showed that the maximum photo current of the cell could be 13 μA. The influence of glucose, sucrose, chitosan, anthraquinone and hydroquinone on the photo current was investigated. The results indicated that glucose and chitosan made the photo current of solar cell increased about 21 μA and 27 μA, respectively; but sucrose, anthraquinone or hydroquinone had not such effect. It illustrated that photo electrons could be emitted by Rhodopseudomonas and were transmitted to the anode of the cell in the presence of electronic media under light, and the photo current could be improved further by the adding of some additives.
Application of BP-GA Algorithm in Optimization of Process Parameters in Thin Strip Tandem Cold Rolling
Authors: Wang Li Chen , Song Ji Shun , Zhang Jian , Li Pan
Published: September 2013

The process parameters of thin strip tandem cold rolling were optimized based on the BP neural network and the genetic algorithm with which the rolling energy consumption required was reduced and could contribute to the rolling force and the thickness control.
The Effects of Heat Treatment on Microstructure and Mechanical Properties of AISI 4140 for Base Cutter Cane Harvester
Authors: Chuaiphan Wichan , Srijaroenpramong Loeshpahn , Pinpradub Dumrongrit
Published: September 2013

The effects of heat treatment on microstructure and mechanical properties of AISI 4140 for base cutter cane harvester were studied. The effect of heat treatment - i.e. the different quenching medium (water, oil and air mediums) and the different heat treatment condition (quenching, quenching+tempering, cover scrap cast iron+ quenching and cover scrap cast iron+ quenching+tempering) on the on microstructure and mechanical properties (hardness, impact toughness and bend test). The material AISI 4140 was purchased from local market in Thailand and an emission spectroscopy was applied to quantify the amount of elements in steel. The specimens were heat treated in an induction furnace. The resultant microstructure of materials AISI 4140 consists of martensite and retained austenite after quenching all mediums, which quenching in water it have more than in oil and air medium respectively. The microstructure of materials AISI 4140 after tempering process consists of bainitic structure (ferrite and epsilon carbide) and retained austenite, which tempering in water quenching condition it have more than in oil and air quenching condition respectively. The hardness, impact toughness and bended test are according to behavior heat transfer of quenching mediums. The material alloy steel grade AISI 4140 is the good candidates to promote the quenching in water ,oil and air medium and must be continuous to tempering process. The technique heating by cover scrape cast iron it was good for protected surface and decreased decarburization on surface of steels. But it is not necessary for control microstructure and mechanical properties.
Automatic Control of Teaching Experiment System Based on the Network
Authors: Zhou Guo Xiong , Li Lin , Tang Jun
Published: September 2013

The rapid development of information technology has become the important factors that influence economy and people life, automatic control principle course teaching has extensive theoretical and practical value, thus to explore to adapt to the new situation of the automatic control principle course teaching become a problem to be solved. Automatic control theory teaching experiment system based on network was proposed, it is the use of multimedia courseware and the resistance furnace temperature control system is set up network teaching platform, not only more convenient teacher prepares a lesson, class teaching content more rich vivid, but also students can better understand and communicate through the network has been to learn knowledge, and can be learned through simulation test, for the follow-up professional courses to lay a good foundation.
Automated Feeding System for Meat Pigeon Based on STM32
Authors: Cai Ji Chen , Zhou Jian Jun , Wang Xiu , Lv Zhao Qin
Published: September 2013

In order to solve the problems of high feeding waste rate and low automated level which exist in the traditional feeding way, an automated feeding system for meat pigeon based on STM32 was designed. The system is suitable for three ladder cages. The modular design was utilized for the control system with STM32 being the control component, travel switch being the position detecting component and step motor being the dynamic component. The stroke control such as moving, stop and reversing was realized in automated feeding process, and meanwhile, the accuracy of the stroke control was ensured. The system is applicable to factory farming for meat pigeon with good stability.
Control Strategy of Non-Road SI Engine's Vibration
Authors: Sun Jian , Liu Sheng Ji , Liu Wei
Published: September 2013

Take the 168F SI engine for example. Analyze the influence of small non-road SI engine’s vibration performance and conformity of production which created by the size’s deviation of the crankshaft counterbalance using the engineering software ADAMS. The result shows that the cylindrical dimension and tolerance value of thecrankshaft balance block have greater impact on machine’s vibration. After machining, the cylindrical dimension of the gasoline engine’s crankshaft counterbalance optimized from 42mm to 42.43 ± 0.15mm. The equivalent vibration intensity ranges from 56 to 64.1mm/s, which have a significantly improvement compared to the original equivalent vibration intensity ranging from 56 to 102.8mm/s. Draw the conclusion that the control of dimensional tolerances is vital to control the non-shaft balance single-cylinder engine’s vibration performance and conformity of production.
A New Timing Method Based on PLC Scan Cycle Time and its Application in Automatic Marine Power Station
Authors: Yu Feng Wei , Sun Hong Ying , Zhang Shou Jun
Published: September 2013

For an established control system, scan cycle time of the PLC is almost constant during steady operation. Scan cycle time of PLC can be act as a timing unit and realize the function of timer by appropriate programming. The timing method based on PLC scan cycle time is practiced in judgment of start success of generator set and grasping of ACB (air circuit breaker of generator) closing opportunity in automatic synchronization control and achieved the desired results. Application of this timing method reduced the hardware of the control system, improved the reliability and economical efficiency. Several years of operation in training lab proved that this control method is reliable and steady.
Feature Subset Selection Based on the Genetic Algorithm
Authors: Yang Jing Wei , Wang Si Le , Chen Ying Yi , Lu Su Kui , Yang Wen Zhu
Published: September 2013

This paper presents a genetic-based feature selection algorithm for object recognition. Firstly, the proposed algorithm encodes a solution with a binary chromosome. Secondly, the initial population was generated randomly. Thirdly, a crossover operator and a mutation operator are employed to operate on these chromosomes to generate more competency chromosomes. The probability of the crossover and mutation are adjusted dynamically according to the generation number and the fitness value. The proposed algorithm is tested using the features extracted from cotton foreign fiber objects. The results indicate that the proposed algorithm can obtain the optimal feature subset, and can reduce the classification time while keeping the classification accuracy constant.
On-Line Measurement of Fiber Temperature along Spinning Line Using Monochromatic Infrared Thermometer
Authors: Wen Xin , Yang Sheng Lin , Li Guang
Published: September 2013

On-line measurement of fiber temperature based on monochromatic infrared thermometer has been introduced. Due to the probe field of view of monochromatic infrared thermometer being much larger than the fiber diameter, the measurement results is an average between the fiber and backgrounds, which can't be used to indicate the temperature of fibers directly. In this paper, a temperature calibration method has been introduced to decompose the measurement result of monochromatic infrared thermometer, and the calibrated results are compared to the measurement results of infrared thermography. It has been found that the on-line measurement with infrared thermometer could promise high-speed and highly reliable temperature testing for the fibers.
The Study on Diaphragm's Mechanical Properties of Hot-Film Air Flow Sensor
Authors: Yu Bo Lin , Yu Fa Hong
Published: September 2013

In this paper, the diaphragms Mechanical property of Hot-film air flow sensor is studied on the base of proposition of double-sided convection heat air flow sensor. This diaphragm consists of barrier layer, support layer and passivation layer. For Hot-film air flow sensor, the Diaphragms Mechanical property is mainly up to the support layer, and the support layer is composed of Si3N4. In this research, four types of air flow sensors with different thickness of the support layer is prepared and tested at different air flow velocity. On the same time, the stress analysis of the sensor diaphragm is simulated at the flow rate of 5m/s by the finite element software. A conclusion can be drawn that the thickness of support layer can not be less than 1000nm, when the air flow velocity is more than 5m/s.
Study of Dynamic Spectrum Access Scheme in HD Radio
Authors: Wang Wei , Yang Gang , Fang Wei Wei , Jiao Wei
Published: September 2013

In HD Radio (Hybrid Digital Radio), the spectra of analog FM and digital signal are combined in a fixed way. However, the bandwidth of FM varies dynamically, which result in the insufficient utilization of spectrum in HD Radio. This paper analyzes the effect of different parameters on dynamic spectrum access scheme in HD Radio. The scheme extends the digital spectrum after detecting the spare spectrum of analog signal. Moreover, the analog signal is maintained a stable quality grade by employing an evaluation measurePEAQ (Perceptual Evaluation of Audio Quality). Simulation results of four programs show that the saved bandwidth of the scheme will achieve average 15 kHz with 42.7 (ms) of frames and dynamic digital spectrum.
Comparison of the Function Regression Method and Data Classification Method for Limit State Function Approximation
Authors: Ouyang Qi , Chen Xiao Qian , Yao Wen
Published: September 2013

To reduce the computational burden of the reliability analysis of complex engineering application, approximate method is always used to construct the surrogate model of the implicit limit state function. Since the limit state function is a classifier of the failure domain and safe domain, its approximation can be established by the function regression method and data classification method. In this paper, these two methods are tested to several limit state functions including linear function, highly nonlinear function, high dimensional function, series system and parallel system. Least squares support vector machines are used to construct the surrogate models. A detail comparison of function regression method and data classification method for limit state function approximation is given. The conclusions of this paper can give guidance for the engineers to choose an appropriate approximate method in the engineering applications.
A Web Information Extraction Method Based on HTML Parser
Authors: Zhang Zhi Ming , Huang Shuai Shuai , Li Ping
Published: September 2013

With the rapid development of Internet, and surge in the amount of information on the Internet, how to accurately and quickly get the information of the users really need, such as the title, links, and pictures, is the hotspot. This paper proposed a fast web information extraction method based on html parser, this paper validated the effect of the proposed method by extracting commodities information of e-commerce website, the results show that the accuracy of the information extraction by our method is higher than the extraction method based on regular expressions, and the extraction time is greatly shortened.
CUDA Parallel Computing Combined with OpenGL Interoperate
Authors: Chen Zhao Hui , Huang Ya Yu , Zhang Jin Wen
Published: September 2013

Through CUDA-C to make parallel operation for generating small balls’ datas and render for balls combined with OpenGL interoperating. Compared with the experiment which generates balls only by OpenGL, the experimental results show that the CUDA has considerable advantages in parallel operation and the speed increased 6 to 7 times than simply using OpenGL.