bluuebunny/crossref_metadata_2025 huggingface dataset:
Benefit Analysis and FGD Optimization for Designed Power Plant Based on Comprehensive Benefit Index System
Authors: Rui Rui , Ye Ding , Long Jiang
Published: October 2014

Taking the initial design value for target power plant as standard index values, two comprehensive benefit index systems for flue gas desulphurization (FGD) technology were formed by mean square difference method with or without the index of earning of by-product, to analyze the environmental benefit, economic benefit, technology benefit and comprehensive benefit of six flue gas desulphurization technologies on designed power plant and obtained the optimal technology ultimately. For the index system with index of earning of by-product, the optimal FGD technology is wet ammonia desulphurization, not only possesses the biggest comprehensive benefit, but also the biggest economical and technology benefit for designed power plant. For the index system without the index of earning of by-product, the wet ammonia desulphurization, limestone wet desulfurization and simple wet desulfurization have similar comprehensive benefits, but individual advantage on environmental, economic and technology benefit separately.
Calculation for Power Consumption of Main Transformer Cooling System in Hydropower Plant Based on Pearson Correlation Coefficient
Authors: Liu Hai Sheng , Huang Hai Ying , Xiao Shao Hua
Published: October 2014

This paper presents a method based on Pearson correlation coefficient to calculate the power consumption of main transformer cooler aiming at the problem of inadequate historical data and low data precision. From the perspective of probability, the method take the temperature data of main transformer and the environment as the intermediate variable, and establish the relationship between operation mode of generator and operation group number of main transformer cooler and the running time of the corresponding, thus estimate the power consumption of main transformer cooling system. Through the practical example shows, the method can be conveniently used for the calculation of power consumption of main transformer cooling system.
Coordinated Control of Isolated Microgrid Including Wind Power, Storage and Seawater Desalination Load
Authors: Liao Yang Kai , Shi Xin Chun , Fu Chao
Published: October 2014

The establishment of isolated microgrid including wind power, storage and seawater desalination load is of significant important to the use of renewable energy and the supply of fresh water resources in island region. A real-time simulation platform based on PXI and PC is built to test the operation and control of the isolated microgrid in this paper. The digital simulation model is introduced and the coordinated control strategy of the microgrid is discussed in detail. This strategy makes use of the controllability of seawater desalination load, coordinates supercapacitor and lithium-ion battery energy storage so as to maintain the balance and stability of the isolated microgrid. Finally, the simulation results show that the correctness and feasibility of the proposed coordinated control strategy.
Design of X-Ku Band Wilkinson Power Divider Using Synthetic Quasi-TEM Transmission Line
Authors: Chen Chih Chiang , Cin Jhen Jie
Published: October 2014

This work presents a miniaturized X-Ku band Wilkinson power divider (WPD), based on 0.18μm 1P6M CMOS foundry technology. The proposed two-dimensional transmission line, called a complementary-conducting-strip (CCS), replaces the conventional microstrip (MS) line structure. With this CCS structure, the occupying area of this novel divider is about 96 % smaller than that of the conventional MS WPD. The prototype occupies an area of only 345 μm by 360 μm without input/output (I/O) pads. The new WPD has an insertion loss of 4.9 dB, an isolation of 13 dB and a return loss 12 dB between 8 GHz and 18 GHz.
Effect of Fuel Injection Pressure & Fuel Supply Advance Angle on Characteristics of Butanol Diesel Blend Engine
Authors: Xiao Ming Wei , Zhang Jun Han , Chen Ting Ting
Published: October 2014

The paper studied the effect of fuel injection pressure and fuel supply advance angle on characteristics of butanol diesel blend engine.First,the results shows that when the volume ratio of butanol diesel is constant ,the fuel consumption and HC emission are the least under 20°CA.With increase of fuel supply advance angle ,the exhaust smoke emission and CO emission decreased largely under high load, but NOX emission increased largely. When the fuel supply advance angle is constant ,with the increase of volume ratio of butanol diesel ,the fuel consumption increased gradually, the exhaust smoke emission decreased largely, HC emission increased clearly, CO emission decreased largely but NOX emission increased.Third,with increase of fuel injection pressure,the exhaust smoke emission decreased largely ,NOx emission changed a little ,CO and HC emission increased largely.
Legal Regulation of Vegetables Quality and Safety
Authors: Fu Xiao Mei
Published: October 2014

Safety is the main factor of vegetable production, management and consumption. Vegetable security ties with the masses of the people's vital interests and the health and safety. In recent years, constantly improve vegetable safety supervision mechanism in our country, carry out comprehensive governance and rectification of vegetable safety severely heavy vegetable safety illegal and criminal behavior. But vegetables pesticide residues on vegetables safety problems appear frequently. Vegetable safety has become the focus of attention. National vegetable safety base is still weak, vegetable safety law regulation a long way to go. Treats only comprehensive, scientific regulation, vegetable quality and safety supervision work to create a new situation unceasingly. Since China's vegetable safety supervising actuality, this paper analyzed the vegetables safe current legal regulation system and security law regulation of specific measures.
Numerical Simulation of Drag Coefficients for Multi-Bundled Power Transmission Conductors
Authors: Hu Zhuo Huan , Huang Tian Ke , Wang Lu Lu , Yang Mo , Sun Ya Zhen
Published: October 2014

In this paper, the drag force of multi-bundled conductors in the flow of wind was analyzed. Numerical simulation of flow around power transmission multi-bundled conductors has been carried out. The drag force of power transmission lines ice-accreted/unaccreted in strong wind was investigated in detail. The drag total force coefficients and each line of the multi-bundled transmission lines were obtained and compared with the empirical results. This paper provided another more accurate method to get the drag force in the design of transmission lines.
Numerical Simulation of the Combustion and Emissions of HPDI Engine under Different Natural Gas Substitution Rate
Authors: Dai Li Ming , Wang Qian , Zhang Zhou Rong , He Zhi Xia , Gao Zhi Sheng
Published: October 2014

Numerical simulation of the combustion and emissions of HPDI engine under different natural gas substitution rate was performed using AVL FIRE . The effects of natural gas substitution rate on cylinder average pressure, temperature, heat release rate, NO and Soot were analyzed under four typical conditions. Cylinder average pressure and temperature decrease with increasing natural gas substitution rate. Furthermore, the NO emission will decrease significantly under the same circumstances.
Reliability Analysis for the Ignition System of Aviation Piston Engine in the GO Methodology
Authors: Feng Yan
Published: October 2014

Analyzing success probability of the ignition system of aviation piston engine based on GO methodology.Constructing the GO diagram of the ignition system of aviation piston engine and definites operational character types and fault rates.Using two quantification analysis methods without considering effects from the shared signal (signal generator 3),the success probabilities of the ignition system is 0.693. With considering effects from the shared signal (signal generator 3),the success probabilities of the ignition system is 0.707 by the corrected probability computing formula.so the effect from the shared signal should not be omitted.Using qualitative analysis method,the sum of the failure probability of minimal cut sets is0.780. After verification,the accuracy of reliability analysis for the ignition system using the corrected GO model with considering effects from shared signals is highest,and this GO model is applicable for reliabiliity analysis of the ignition system of aviation piston engine.
Remote Control of Heating System and Analysis of Energy Efficiency
Authors: Chipulis Valeri , Kuznetsov Roman , Voloshin Eugene
Published: October 2014

The effectiveness of the energy savings by using the heating controllers is analyzed for the monitoring and dispatching systems in the heat-and-power engineering. The original software has been developed for the remote control of the heating and for the analysis of energy efficiency.
Single Longitudinal Mode Fiber Laser Based on Saturated Absorber
Authors: Pan Wu , Zhang Hong Lin , Xu Zheng Ke , Zhang Hui
Published: October 2014

In order to realize single longitudinal mode (SLM) output, an erbium-doped fiber (EDF) laser with fiber ring cavity is proposed which uses an un-pumped EDF saturated absorber as a SLM selector. Ring cavity length, coupler ratio and insertion loss which affect ring cavity filter performance are analyzed theoretically and simulated numerically. Un-pumped EDF length and Er3+ concentration are analyzed theoretically and simulated. Research shows that, the bigger coupling output ratio of ring cavity, the greater transmission peak; the greater mode line width; the shorter ring cavity length, the wider free spectral range; the bigger coupling loss, the smaller transmission peak; when the difference between two cavities length is big, cursor effect is not obvious. Laser threshold increases with absorber length increasing; the bigger saturated absorber concentration, the higher laser threshold.
Study on Environmental Protection Path via Government Procurement
Authors: Yin Yan , Zhang Xiao Rui , Feng Yong Qin
Published: October 2014

As the resources & environment issues faced by various countries and regions in social and economic development become more and more prominent, green government procurement has drawn widespread attention of all the countries. Implementation of green government procurement can guide the society’s concept of green consumption, promote the development of green industries and technologies, guide and cultivate a host of green products and industries, and enhance the public’s environmental awareness. Through analyzing the modes of green government procurement adopted by the US, the EU and Japan, especially the performance indexes of green products, this paper has comparatively analyzed the differences between China and developed countries in green procurement measures, and put forward the direction for our country to improve the policies of green government procurement.
Study on the Rules of Sedimentation in Ningxia Shuidonggou Reservoir
Authors: Li Chun Guang , Yang Cheng
Published: October 2014

In order to predict the sedimentation deposition in the Shuidonggou reservoir in next few years, the flow in this reservoir is studied using the two dimensional (2D) hydraulic mathematical model. The governing equations of the model are discredited with finite volume method (FVM) on unstructured grids, and the 2-D flow movement are simulated under several different conditions. The results showed that: when the amount of the water inflow and the water drawn unchanged, as the water level drops, water flow velocity increases in the reservoir; at high water level (1179 m), the left bank of the south side of the intake eroded; at low water level (1174.4m), north and south sides of the mainstream of water have a recirculation zone; when the water level is constant, with the increase of the amount of water, the recirculation zone on the right side of the intake became smaller and close to the water intake.
Air Gap between Protective Screen and Surface of Reinforced Concrete Cooling Tower
Authors: Barabanshikov Yury G. , Belyaeva Svetlana , Antonova Maria , Zapoev Mihail
Published: October 2014

The article considers the problem of effective protection of the cooling tower shell using the screen with a ventilated air gap. The aim is to determine the optimal parameters of the air gap. In operation, the calculations were performed showing the effects of temperature conditions and the thickness of the gap on the aerodynamic and thermal modes of operation. The article made conclusions based on the done calculations. The optimum thickness of the gap, provided heating air inlet, which provides the ability to assimilate air moisture throughout the layer and delete it in the atmosphere, which in the future will eliminate condensation on the cold surface of a concrete shell.
Distribution and Origin of Organic Carbon, Nitrogen and Phosphorus in Kaohsiung Harbor Sediments
Authors: Chen Chiu Wen , Chou Yueh Ting , Chen Chih Feng , Dong Cheng Di
Published: October 2014

This study, through on-site sampling, performs a content analysis of total organic carbon (TOC), total nitrogen (TN) and total phosphorus (TP) contained in Kaohsiung Harbor surface sediments, and accordingly evaluates their temporal-spatial distribution and sources. The results indicate that the TOC content of Kaohsiung Harbor sediments ranges from 1.0 to 7.0% (average 2.3±0.3%) with the highest level of 6.8±0.2% in the Salt River estuary. The TN content ranges from 990 to 10,582 mg/kg (average 2,665±1,800 mg/kg) and the TP values are between 178 and 784 mg/kg (average 363±147 mg/kg). The content distribution of TOC, TN and TP demonstrates a high-to-low sequence: estuary, channel and Harbor, indicating that the organics in the sediments are mainly from the upstream inflow of rivers. The TOC, TN and TP contents in the wet season are obviously higher than those in the dry season, which might result from the terrestrial organics flushed into the Harbor by the seasonal abundant and concentrated precipitation. The C/N ratio of Kaohsiung Harbor sediments is between 4.6 and 26.9, with an average value of 11.9±6.6. Through further estimation, 76.5% of the TOC is identified as terrestrial, and the TN is dominated by marine autogenetic sources.
Research on Evaluation Method of Relay Protection Action Based on Fault Information
Authors: Liu Zi Nan , Xiao Shi Wu , Jiang Shan
Published: October 2014

Research on power system fault diagnosis and method of relay protection action require the complete primary equipment topological structure of the grid. This article propose an evaluation method based on power network topology structure, which is easily implemented and it can assess the performance of breakers and protections in an entire power system. Considering the missing or error information, a protection motion capability analysis method based on genetic algorithm is proposed on the basis on that method. The simulation results on IEEE three-machine nine-bus system show that the algorithm is capable of discriminating the fault fast and accurately, and has excellent fault-tolerance capability.Keywords: Relay Protection; evaluation of action; Genetic Algorithm; fault-tolerance capability
Influence of Pouring Temperature on the Solidification Characteristics of A357 Aluminium Alloy
Authors: Fan Zhen Zhong , Hong Run Zhou , Zhang Kun
Published: October 2014

With the decline of pouring temperature in the range of 750°C~675°C, solidification curve was shifted to left primitively, and then gradually turned to right. Temperature of concretion nucleation and binary eutectic reaction was increased after a reduction, whereas the time was presented dynamically, both the minimum value which were obtained at 715 °Care 23.48s and 89.24s respectively. Growth time of crystal nucleation was extended after a slight decrease, the lowest point which was appeared at 715°C is 607.25s, time of binary eutectic reaction was varied as the cubic polynomial, the minimum value that emerged at 715°C is 228.39s. Solidification curve was changed as the exponential function, cooling rates ascended initially and then dropped andante, the peak point that achieved at 715°C is 5.93°C/min. The test results of microstructure shows that the content of primary and eutectic silicon with the plate-like and needle morphology, was increased primarily and then decreased with the decline of pouring temperature, however, the changing trend of grain size was shown as opposite, the minimum value which was obtained at 715°C is 534μm. It was also found from the results of grain size that with lower pouring and binary eutectic temperature, along with higher cooling rate and nucleation temperature, grain size was refined properly.
Review of New City Viaduct Noise Barrier
Authors: Zhou J.L. , Wu Shu Qian , Wu G.Q.
Published: October 2014

Noise not only makes people worry, sleep disturbance, hinder learning to work and rest, affect human health, and it is difficult to completely eliminate. Sound barrier is located in the sound source and the sound receiving point between the structure with shielding enough surface density of sound, built finite noise barrier of sound source by both local area can make the operation noise source in the dissemination process has a significant additional attenuation, which weakens the noise influence in certain areas where the recipient within, to improve the quality of acoustic environment of the surrounding environment. The present research situation of new sound barrier and the research content of new sound barrier are summarized. The theoretical reference for the further development of new sound barrier is provided.
Study on Building Climate Adaptability under the Condition of the Human Body Thermal Comfort - Taking Rural Houses in Shandong Peninsula as Example
Authors: Ge Cui Yu , He Pei Ling
Published: October 2014

A field survey in Shandong peninsula in China has been done on rural houses to obtain thermal adaptability model which is expressed as Tn=0.268Tout,m+20.356.An analysis has been done on local climate data by using climate analysis method combined with psychrometric chart,and establish comfort zones of two seasons of winter and summer inWeifang. In this paper, we defined six controlling potential areas (tranditonal heating, passive solar, heat storageand night ventilation, natural ventilation ,air conditioning and evaporative cooling). Finally, this paper summarized the suitable design strategies which response to climate environment on rural houses in Shandong peninsul in China.
A Novel Method to Estimate the State of Health of each Cell in Battery Pack
Authors: Yan Xiang Wu , Guo Qi , Xu Heng Bo
Published: October 2014

In order to estimate the state of health (SOH) of each cell in the battery pack, polarization resistance and ohmic resistance were analyzed in the aging process of the battery pack. Accelerating aging test for the battery was done, quantitative relationship between the ohmic resistance and the capacity aging was obtained, a method of relative state of health (RSOH) evaluation was proposed accordingly, Experiments on the LiFePO4 battery pack which is connected in series by 100 cells have been taken, the experimental results show that the evaluation method of RSOH can evaluate the cells SOH accurately and is not limited by the operating conditions.
A Study of the Planning Methods in the Underground Work of Top-Down Construction in High-Rise Buildings
Authors: Fang Guang Xiu , Jin Zheng Chao
Published: October 2014

In the High-rise building construction, the selection, combination and optimization of top-down method have not been systematized to date and rely on experience and appraisal. In this article, four classes of parameters are selected according to the different nature of the factors influencing the design of top-down method so as to conduct systematized reorganization and analysis of the geological situation, structural characteristics, construction quality and term, and economic efficiency of the building. This study proposes several tables classifying the influencing factor, establishes selection criteria and suggests detailed flowchart for the planning of top-down method. Case study confirms the suitability of the resulting top-down method planning, and derives and combines the optimized method to provide fast construction.
Design of Intelligent Building Security Systems Based on QFD
Authors: Chen Wei Ke , Sun Rui
Published: October 2014

In order to make the functions of intelligent building security systems meet the need of users,enhance the core competitiveness of construction enterprises and promote diversification of real estate,study on the importance of the functions of intelligent building security systems with the method of QFD.According to stakeholder theory,investigate and analyze of stakeholder needs in deep,oriented with stakeholder needs,using Quality Function Deployment method (QFD),get each functional assessment index weight score of the design of security system.The higher the score the more important the function is,and more important for stakeholder satisfaction on intelligent building security systems,and more important for entire functional evaluation indicators.
Pavement Performance of Asphalt Concrete Using Building Demolition Waste
Authors: Ren Jiao Long
Published: October 2014

In order to deeply analyze the feasibility of the application of building demolition waste on asphalt concrete, pavement performance of asphalt concrete using different content of building demolition waste was analyzed. Results show that: (1) the addition of building demolition waste increases the asphalt-aggregate ratio of asphalt concrete, and the asphalt-aggregate ratio increases 0.25% with the 10% increase of building demolition waste content; (2) the high-temperature stability of asphalt concrete improved significantly with the increase of building demolition waste content; (3) building demolition waste can improve the low-temperature crack resistance of asphalt concrete, and the optimum content is 30%~40%.
Simulation of Earthwork Load-and-Carry System Based on GPSS World
Authors: Lai Bing Heng , Li Chang Hua
Published: October 2014

Focusing on the complexity and a large number of variable factors of earthworks, to simulate earthworks with discrete event system simulation method is very effective, on the basis of analyzing the current developed simulation software, GPSS World discrete event simulation system was used in the simulation; For the one-way path optimization in the Earthwork Load-and-Carry System, an optimization strategy was put forward and put into a series of recycling process including simulation, verification, modification, re-simulation and re-verification with the simulation system, to achieve the optimization of the simulation model. Finally, through the verification of simulation concrete example, the method is proved effective and feasible, and has a wide applicability and a strong guiding significance for actual projects.
Water Flow in Unsaturated Porous Media by Finite Element Analysis
Authors: Kim Jae Hong
Published: October 2014

To simulate water flow in unsaturated porous media, analytical and numerical solutions of infiltration models have revealed the hydraulic and mechanical properties of partially saturated soil, such as the soil-water retention curve, shear strength, and permeability functions. Seepage, which is related to both the rainfall intensity and the saturated soil permeability, is a problem for partially saturated soils. In this study, a simple stage model in developed to represent vadose zone infiltration under a constant intensity into a homogeneous soil with an ideal suction profile; in this model, the saturated permeability is less than the rainfall intensity. The typical trends of the matric suction profile in a vadose zone during a rainfall are calculated via analytical methods. The model predictions agree well with both a coupled code (this study) and open/commercial codes (UNSAT-H and SEEP/W) for several soil types.
Quarry Wall Stability Assessment Using TLS Method
Authors: Kovanič Ľudovít , Blišťan Peter
Published: October 2014

The aim of this paper is to test the possibility of terrestrial laser scanning use to analyze the stability of quarry walls. In recent years the laser scanners started being tested and used for the documentation of geological structures and various phenomena such as landslides, rock collapses and observation of their morphological changes. The subject of our research was a quarry wall in the open-pit mine Brestov, with a significant bench or block disintegration of the andesite massif and therefore, there is a risk of rock blocks crashing. Selected quarry wall was repeatedly measured in the autumn and spring season by a terrestrial laser scanner and movements of rock blocks were evaluated. The observation results show that on the selected quarry wall there were no major movements or block collapse detected and the wall is stable after the winter shutdown.
Optimum Design for the Independent Foundation Based on Parameterized Model and Criteria Method
Authors: Lu Hai Yan , Xing Tong , Bao Wen Bo
Published: October 2014

Through building dynamic foundation configuration database based on the parametric design models, an efficient optimization design principle suitable for independent foundation design is put forward combining with the existing building structure design codes. Using the object oriented language VB to develop independent foundation optimization design programs, to realize reading in internal force calculation data of the upper structure from SATWE software, then the program searches automatically for the optimal solutions .The optimal design of practical projects illustrates the feasibility of the proposed optimal design method.
Data Interpolation Methods by Inverse Distance Weighted Average Method between Multidisciplines
Authors: Yang Fan , Yang Wei Zhu
Published: October 2014

In this article, to handle data exchange between different grid systems efficiently and accuracy, the accuracy of inverse distance weighted average method is researched by different searching radius and exponent parameter. The result is compared with other two interpolation methods, radial basis function interpolation and local triangular projection method. The result shows that the search radius and exponential parameter of inverse distance weighted average interpolation method have not significant influence on interpolation result when radius is large.
Investigation of Nucleation and Crystallization Behavior of Li2O-MgO-Al2O3-SiO2-MgF2 Glass-Ceramics System
Authors: Cao Zheng , Zhao Xiu Quan , Jiang Hong , Li Chang Jiu , Shen Yang , Yu Lin
Published: October 2014

The glass-ceramics were produced via heat treatment from bulk base glass at the appropriate treatment temperatures provided by the differential thermal analysis (DTA) measurement. The effect of nucleation on crystallization kinetics has been explored. It is found that nucleation indeed decreased the activation energy of crystallization. X-ray diffraction (XRD) analysis demonstrated that the main crystalline phase was magnesium alumino-silicate (MgAl2Si3O10), Scanning electron microscopy (SEM) morphology showed that the crystals were needle-like in all the samples.
Numerical Analysis of the Ball Mill Coupled with Vertical Vibration
Authors: Sun Yi , Huang Xiao Huan , Jin Xiao Hang
Published: October 2014

The motion equation of the grinding cylinder is deduced, which is based on the dynamic analysis of the grinding cylinder of the ball mill coupled with vertical vibration. Numerical model of vertical vibration ball mill is built and used to study the motion of grinding cavity media and grinding efficiency. The simulation results show that the distribution status of the grinding media in each region is changed, the grinding fragmentation of the grinding media to the material is enhanced, and the efficiency of fine grinding is improved with the coupled vertical vibration in a ball mill.
Numerical Analysis of the Surface Aerodynamic Noise of the CRH3 High Speed Train
Authors: Liu Ji Zhou , Li Ren Xian , Cui Peng Xiang
Published: October 2014

For high speed trains running at 300km/h or more, the aerodynamic noise becomes the primary noise source. A good knowledge of the location, spectral characteristics and propagation behavior of the noise source and the corresponding methods to reduce the effect of the aerodynamic noise are of crucial necessity during the design process of the high speed train. Based on the Lighthill Analogy, the pressure fluctuation of air at the surface of the train is acquired by simulating the flow field of a CRH3 high speed train running at 200 km/h, 300 km/h, 400 km/h and 500km/h by means of large eddy simulation method. By Fourier transformation, the distribution and the spectral characteristics of the surface acoustic dipole sources are obtained. The analysis of the results shows that the aerodynamic noise of the high speed train is a broadband noise with a strong radiation power band from 50Hz to 1000Hz. The dipole acoustic power calculated by statistically averaged on train surface is found to be proportional to the sixth power of running speed of the high speed train. The first and second bogie, the inter-car gap, the air deflector of the power train and the train nose of the last wagon are the main noise sources that contain high radiation energy.
Numerical Analysis on Performance of Frame-Shear Structure with High Pile under Complex Load
Authors: Yang Jing Ping
Published: October 2014

In order to acquire mechanical performance of High cap supporting frame-shear structure, in view of the sea high cap supporting frame-shear theory analysis and numerical simulation of structure is less, this paper performs numerical simulation analysis for pile caps-soil-the upper structure using the finite element software ANSYS. Expression equation of wave force is given, and three-dimensional finite element model is established. By Analysis the deformation and stress of pile foundation and pile caps under different load combinations are obtained, and the deformation, bending moment of pile top, axial force are checked, finally the feasibility of the system is verified, and these can provide a reliable basis and reference for reasonable design of offshore structures. High cap supporting frame-shear structure for its strong adaptability is widely used in offshore construction system.
Application Retarders to Solve the Problem of Lift Joints
Authors: Barabanshchikov Yury G. , Pakrastinsh Leonid
Published: October 2014

Lift joints can cause problems related to insufficient adhesion of new concrete to old. In this paper, show the possibility to avoid the formation of the lift joints with long breaks of concreting by lifts by delaying the initial setting of cement in concrete. Three types of cement retarders was tested: based on salts of phosphoric acid, based on the calcium gluconate and based on the modified technical lignosulfonates. Research has shown that can be avoided the lift joints in case the concreting breaks up to a 1 day in by using retarding layer between the old and the new concrete.
The Study on Design Solution for Energy Efficiency of Existing Residential Building (EEERB) to Realize the 4th Energy Efficiency Target
Authors: Zhang Zhao Rui , Xie Feng , Liu Yu Lin , Cai Qian
Published: October 2014

Based on new energy efficiency design standards of Beijing and specific project, this paper focuses on finding reasonable design solution for EEERB to realize the 4th energy efficiency target by diagnosing energy efficiency and judging thermal performance.
Investigations on the Wind Vibration Coefficient of Single Layer Lattice Barrel Vault Structures
Authors: Wang Jun Lin , Guo Hua , Li Hong Mei , Sun Jian Heng
Published: October 2014

Wind actions on the structures consist of two parts, the average action and the fluctuation action. The fluctuation action will cause the structures vibrating and enlarge the wind action of the structures. This paper investigates the wind vibration coefficient for the single layer lattice barrel vault structures. In the analysis, the simulation velocity-time curve of wind is developed and the finite element methods are used to analyze the wind-induced vibration responses of the lattice barrel vault structures. The influence of the rise to span ratio, the length to width ratio of the structure, and the different average velocity of the wind are investigated. Based on the numerical analysis results, the formula of the wind vibration coefficient for the single layer lattice barrel vault structure is suggested for the wind resistance design of the structures.
Investigation of the Influence of Electrolytic-Plasma Processing on Structural-Phase State and Mechanical Properties of the 40CrNiAl Alloy
Authors: Skakov Mazhyn , Yerbolatova Gulnara , Kantai Nurgamit , Scheffler Michael
Published: October 2014

It is shown that as a result of electrolytic plasma carburization is released from the solid solution carbides dispersed particles based alloy components, i.e. hardening occurs. Found that after processing the surface of the alloy samples 40CrNiAl modified form reinforced layers whose thickness depends on the time, temperature and processing of components of the electrolyte.
A Method to Compensate the Dead Time for Three-Phase PWM Inverters
Authors: Pan Wen Gui , Zhang Lei , Zou Yao Pu , Wang Chao , Han Chang Pei
Published: October 2014

As for a vector control of a permanent magnet synchronous motor, this paper analyzed the influence of dead-time effect of three-phase bridge inverters on output voltage and current in details. A novel on-line method was proposed for dead-time effect compensation based on disturbance observer. At last, the method is simulated using MATLAB and the simulation results proves the effectiveness and feasibility of the method presented.
A Prediction Model for Equivalent Parameters of Rolling Guide's Joint
Authors: Kang Jun Xian , Wang Jun , Zhang Qiang , Liu Ao Xiang , Shu Qi Lin
Published: October 2014

To obtain a prediction model of the equivalent parameters of rolling guide's joint, an F-P-KC prediction model was established based on force, pressure and equivalent parameters. Firstly, according to the linear assumption of physical parameters within the rated range, an F-P model was established in the consideration of the loads, types and installing modes of guide’s slider group; secondly, a P-KC model was established in terms of the result of the media condition of joint surface; finally, the prediction model was successfully applied in the project, and the feasibility was verified. A new effective way for solving the similar problem is opened up by the model and it also lays a theoretical foundation for the following study of dynamic characteristics.
Nonlinear Simulation Analysis on Steel Concrete Composite Beam with Rubber Aggregate
Authors: Yang Jing Ping
Published: October 2014

In order to investigate mechanics performance of rubber concrete steel composite beam, nonlinear analysis on four steel concrete composite beams with different amount of rubber has been carried out using finite element analysis software, and the influence of rubber concrete to mechanical properties of composite beam was explored. The results show that ductility, crack resistance of rubber concrete slab, shear capacity of shear connector for rubber concrete steel composite beam are improved significantly compared with ordinary steel concrete composite beams. Along with the increase of rubber content, the energy consumption of composite beams gradually increases, while the ultimate bearing capacity decreases with small amplitude. As a kind of green environmental protection material Rubber Aggregate concrete has the characteristics of good ductility, crack resistance is strong, energy consumption is obvious and good wear resistance.
Application of PCR-SSCP Technology in Microorganism Detection
Authors: Bian Li Hong , Lang Ya Jun
Published: October 2014

PCR-SSCP is a technology based on the combination of PCR and SSCP, widely used in such research fields as microorganism identification and microorganism flora. In this paper, the application of PCR-SSCP in bacterial detection and microbial community monitoring is briefly introduced.
Automatic Loading AGV Servo Controller Based on ARM and FPGA
Authors: Zhang Hao Ming , Wang Ying Hai , Peh Lian Soon
Published: October 2014

Two-axis differential speed control AGV was widely used in factory to carry cargo. AGV servo controller based on single DSP cannot meet the requirements of automatic loading goods, which greatly reduces the degree of automation. Software and hardware of three-axis AGV based on ARM9 and FPGA was discussed and designed to realize loading goods automatically, experimental results are also given.
Current Intensity and Magnetic Field Measurement Based on Circular Coil Magnetic Inclination
Authors: Liu Zhu Qin
Published: October 2014

Using SS95A integrated Hall sensor is advanced, the magnetic induction intensity detecting load current circular coil center point, through the positive, reverse direction change current circular coil, accurate measurement of the magnetic field strength and magnetic inclination in the local.
Efficient Strip Belt Shelling and Air Suction Cleaning Units for Sunflower Seeds
Authors: Yangyuen Suphan , Laohavanich Juckamas , Chaiwchanwattana Cherpong , Wiriyaumpaiwong Songchai
Published: October 2014

This study was aimed to design and develop the strip belt shelling and cleaning units for sunflower seeds. The different principles of operation by streak belt consist of number of strips and its configurations: full swath section, 4 – 5 zigzag and 4 eccentric drums. Five different linear velocities of drum 9.75, 10.00, 10.25, 10.50 and 10.75 m/s were evaluated. Pacific sunflower with 9.62% w.b. moisture content was prepared to test the performance of shelling unit. In the cleaning unit, the testing was done at various 1.82 – 3.08 m/s air suction speeds and 30 – 40 degrees plate inclination angles. The shelling result showed the appropriated condition was 4 eccentric drum with the 10.50 m/s linear velocity. The shelling was achieved 80.43% efficiency and 84.36% commercial seeds (whole and small damage kernels) at 15.17 kg/h capacity. The proper condition for cleaning was 2.45 m/s air suction speed and 30 degrees plate inclination angle. Cleaning achievements were 98.64% efficiency and 0.07% kernel loss in suction air.
Machine-Learning-Based Mechanical Fault Diagnosis Method
Authors: Zhu Hong
Published: October 2014

With the development of science and technology, the theoretical content of mechanical fault diagnosis technology has been initially improved and established a scientific research system. Combining the mechanical diagnostic techniques with the current advanced science and technology, a variety of mechanical fault diagnosis methods have been researched and developed. Mechanical fault diagnosis evolved from empirical diagnosis to mechanical diagnosis and then to the current intelligent learning diagnosis. Now mechanical fault diagnosis collects mechanical failure data precisely mainly by a variety of sensors, uses a variety of fault diagnosis model to conduct diversified and intelligent diagnosis.
Application of a New Type of Fiber in Knitted Garment Industry
Authors: Dou Jun Xia
Published: October 2014

With the development of human civilization progress and the improvement of people's living standard, people's clothing, jewelry demand is higher and higher, in this environment, the textile industry also got a boost of, now, all countries in the world in research and development of new fiber material, and use it as indicators of economic development and progress, this study of the application of new type fiber materials in knitting clothing industry has carried on the simple discussion.
Maximum Power Control with a Boost Chopper and Grid Connection of PMSG Based Wind Turbine
Authors: Yang Shih Yu , Wu Yuan Kang , Lin Huei Jeng
Published: October 2014

The paper focuses mainly on the maximum control method of boost chopper circuit based PMSG wind turbine. It includes a full bridge rectifier, boost chopper circuit, and a two-level voltage converter. Therefore, this PMSG system can directly connect with the gird; and the active power and reactive power can directly control by the grid voltage oriented vector control. The maximum power control method of the boost chopper based PMSG was studied to charge a constant resistance. In this study, the maximum power control is improved to apply in gird connection system.
Micromagnetic Simulation of a Perpendicular Exchange-Coupled Magnet
Authors: Xiao Hong Wen , Wang Zi Jun
Published: October 2014

The magnetization switching process of a perpendicular exchange spring system was investigated using micromagnetic simulations. An exchange spring hysteresis loop was observed in this work. Details like coercive field and remanent magnetization are discussed .
Prediction of Solubilities for the Salt-Water System CaCl2-KCl-H2O at 348.15 K
Authors: Han Hai Jun , Li Dong Dong , Guo Li Jiang
Published: October 2014

Pitzer-Simonson-Clegg model was used to simulate the properties of the ternary system CaCl2−KCl−H2O. The Pitzer-Simonson-Clegg binary parameters and mixture parameters for the titled system at 348.15 K were obtained from the reliable experimental osmotic and solubility data. The solubility isotherms of the titled three ternary system were predicted by Pitzer-Simonson-Clegg model and compared with the available experimental data, the agreement is generally good. The solubility isotherms for the titled system CaCl2−KCl−H2O at 348. 15 K were predicted using Pitzer-Simonson-Clegg model.
Radar Non-Contact Life Parameter Detection System
Authors: Wang Hao , Chen Dian Ren
Published: October 2014

The main principle of radar non - contact life detection technology is the use of electromagnetic wave by the human body, the echo signal is modulated by the surface movement caused the life activities of the human body, so that some parameters of the return signal change. The research on the non contact detection technology, completed the construction of life monitoring system module of hardware, design of software algorithm, real-time data acquisition, and the use of special software algorithms, to detect these changes, and then extracting parameters of human life.
Research on Automatic Test Techniques of CTCS-2 Level Train Control Center
Authors: Wang Zhe , Guo Yan Jun
Published: October 2014

To address the problem of low efficiency of manual testing of CTCS-2 train control center, an automated testing of train control center script technology was proposed in this paper. This method makes full use of the characteristics of Lua programming language which is simple and efficient and can be embedded in C or C++, The control scripts based on Lua language are used to control the automatic test behavior and the data scripts are used to store data of testing case. By this way, the testing logic separates with the testing data and independent of the automated testing engine, by which greatly improve the scalability and flexibility of the testing platform. Through the use of automated testing of train control center of HengYang-LiuZhou passenger dedicated railway, it proves that this technology can be a good service to automated testing of train control center.
Research on Kinematic for the Mechanism of Wheel-Leg Mobile Robot with Multi-Sports Mode
Authors: Song Meng Jun , Ding Cheng Jun , Wang Xu Long , Zhou Yi , Zhou Hai Song
Published: October 2014

Based on the walking mechanism and the researching method for the serial-parallel mechanism, one multi-sports mode wheel-leg mobile robot is proposed in this paper; Firstly, the serial mechanism model of one leg is constructed, and the method for constructing the kinematic model of the single leg mechanism is studied; Secondly, based on the study of the single leg mechanism, the kinematic model of the parallel mechanism of the multi-sports mode wheel-leg robot is further constructed when the robot is in the support state; Finally, based on the methods and theories discussed above, the experimental prototype mobile robot is constructed, so feasibility of the proposed method is verified.
Research on Monitoring Ice Thickness of Overhead Lines Based on FBG Sensor and Parabolic Method
Authors: Liu Zhi Ming , Zhang Zhi Guo , Li Lu Ming
Published: October 2014

This paper is for real-time monitoring ice thickness problem of overhead lines, modeling the sag difference monitoring model, which is based on fiber Bragg grating (FBG) sensing technology and parabolic method. The model takes advantage of the overhead line sag difference constant of two monitoring points, and achieves absolute stress change values, which effectively offset various factors, such as the wind load and thermal expansion and contraction, in the impact of the model. The performance comparative analysis is carried out between the results of the model and synchronous monitoring results of vernier caliper. Experimental measuring results show that under the same conditions, the similarity of results between two methods is very high. The accuracy of monitoring results of the model can meet the project requirements and it can monitor ice thickness of overhead lines effectively in real time.
Study on Vibratory Loads of Rotor with Trailing Edge Excitation
Authors: Liu Shi Ming , Yang Wei Dong , Wu Jie
Published: October 2014

To investigate the vibratory load of rotor with trailing edge excitation, and to study the relationship between TEF motion and hub vibratory load, a comprehensive model is built based on a conventional rotor modeling. Both the inertial force and aerodynamic force of TEF are considered. Effects of frequency, phase and amplitude of the excitation on hub vibration are discussed. The results indicate that with proper phase, hub vibration can be reduced with any of 2-5/rev trailing edge excitation. Within a reasonable range, the change in 4/rev hub vibration is more obvious with larger flap deflection. Control laws of several vibration directions are different, so various directions should be considered overall for optimal vibration control. Light TEFs are beneficial for vibration control.
Analysis of Fatigue for Mental Bellows Based on ANSYS
Authors: Qu Cai Hong , Han Wei , Wang Yan Ming
Published: October 2014

The fatigue analysis of the mental bellows had been analyzed. The fatigue tests were designed based on orientation displacement Compared the result of analysis on ANSYS with the result of experiment, the method of fatigue analysis is reliable. Furthermore, an important suggestion should be made that the orientation displacement should be reduced when the mental bellows was usedKeyword: fatigue analysis; mental bellows; ANSYS
Computer Aided Design of New Type PMSM Based on ISAD
Authors: Zhang Hao Ming , Wang Ying Hai , Peh Lian Soon
Published: October 2014

Integrated starter alternator damper (ISAD) system requires motor: high-efficient, high-power density, low-ripple torque. Halbach motor is a new type of PMSM: unique permanent magnet structure makes motor have a sinusoidal magnetic field, can increase magnetic flux density of air gap and decrease magnetic flux density of rotor, which could enhance the power density and efficiency of motor as well as reduce its size. Software of Halbach motor design is given, also with the finite element analysis software with ANSYS language. Experiment proves the advantage of Halbach motor in ISAD system.
Research on Embedded Intelligent Vehicle Tracking Avoidance of Obstacle
Authors: Cheng Yan Yan , Yuan Quan Bo
Published: October 2014

This paper describes the development and widely cited robots for intelligent vehicles unmanned automotive applications, smart car automatic tracking and avoidance were studied to select the appropriate tracking and obstacle avoidance algorithm, used to embed smart car achieve its tracking avoidance function..