bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Operational Effectiveness Evaluation Based on Interval Number and Grey Decision Making
Authors: Zhu Xue Zheng , Kuang Dong , Gu Jin , Nie Kun Lin
Published: April 2014

During the combat effectiveness evaluation,some problems such as the precise number,interval number and the language fuzzy number exist in the evaluation values.To solve these problems,this paper introduces the interval number and grey decision making principle and brings forward a operational effectiveness evaluation model based on the interval number and grey decision making.This model can truly reflect the comprehensive evaluation value of the weapon equipment operational effectiveness.
Research on the Development of Chinese Small and Micro Enterprises Based on Institutional Change
Authors: Guo Wei Feng
Published: April 2014

Small and micro enterprises are important forces in the development of Chinese economic and social. This article researches the process of institutional change for development of Chinese small and micro enterprises by taking reform and opening up as the dividing point, and researches the model of institutional change of small and micro enterprises.
Revelation of Domestic and Overseas “Smart City” Construction Practice to “Smart Quanzhou” Construction
Authors: Hong Wen Chang
Published: April 2014

With the proposal of construction ideas of smart earth, the smart city construction becomes a kind of global consensus. In addition, the smart Quanzhou construction also becomes one of the important construction missions and targets in the city development of Quanzhou. This paper, by means of analyzing the necessity of smart Quanzhou construction, summarizes some problems that exist in the city informatization of Quanzhou. Moreover, this paper also proposes the general idea of the construction of the smart Quanzhou by studying and summarizing the successful case of smart city construction in the domestic and overseas.
Safety Control Strategy Designed by the Visual Guidance System of Urban Underground Space
Authors: Liu Jie , Shao Yu
Published: April 2014

The visual guidance system aims to convey the environmental information through selecting, handling and integrating the carrier of visual information. Because of the characteristics of underground space itself, its interior defence against calamities is rather complicated. Therefore, hazard prevention has increasingly become the significant project to develop and utilize the underground space in a scientific, reasonable, safe and effective way. From the angle of safety, this paper elaborates the necessity of visual guidance system to prevent and cure the interior underground space, discusses and brings forward the structural strategy based on the safe guidance system of underground space. Besides, it also brings forward the suggestion to enhance the security of interior underground space by making use of the guidance system of underground space in order to improve the special characteristics to prevent and reduce the disasters in it and increase the elasticity of the cities to endure disasters.
Study on Structure Effect and Structure Reconstructing Controlling Disaster Mode of Cavity Group-Surrounding Rock System Catastrophe
Authors: Luo Hong Sen , Chen Qing Fa
Published: April 2014

The large scale cavity group structures failure phenomena often appear in the catastrophe process of the complicated cavity groups system, so, it is very important to study the structure effect of cavity group for controlling disaster in engineering and coordinating mining of the hidden danger resources. The cavity group structure were defined and classified. The structure effect of the fifteen kinds of working condition was simulated by using Rock Failure Process Analysis code (RFPA2D). the results show as follows: 1) The stability order of the typical cavity group structures was the second one, the third one and the first one; 2) The phenomena of small cavities interpenetrating and forming a big cavity often appeared in the kinds of the first and the third structure in the process of system Catastrophe, but not in second structure; 3) The system appeared catastrophe easily with the number rising of the first structure, the third structure taking the second place and the second structure taking the last place; 4) The risk of the system consisting of two groups of the third structures was greater than one of the system consisting of one group of the first structure; 5) The more the number of the poor stability structures is in the up of system, the more poor stability the system had; 6) the same structures were placed in the upper and lower order in system, the lower structure would appear prior into the failure and instability status. Based on the above analysis on structure effect, the new technology mode of controlling disaster of structure reconstructing was proposed, and the strategy of controlling disaster was also studied. The study results would provide the support for controlling disaster in China's mines with complicated cavity groups.
Supply Chain Information Platform Construction
Authors: Wang Han Bin
Published: April 2014

The global logistics supply chain enter the competition of modern enterprises. It has been transformed into the supply chain competition in the supply chain. Throughout large foreign retail chains, it relies on advanced information technologies and "supply chain management concept" The rapid development form the competitive advantage. Therefore, if our chain wants to gain a foothold in the increasingly fierce competition, it should improve supply chain management. Supply chain management will directly affect the level of the development of enterprises. Articles form current development of chain enterprise information. The analysis of enterprise information chain problems build chain supply information platform. It puts forward measures to achieve information platform construction.
Effect of Calcination Temperature on the Structure and Electrochemical Performance of LiNi0.4Co0.2Mn0.4O2
Authors: Zhang Lin , Luo Fei , Wang Jian Hua , Guo Yu Zhong
Published: April 2014

LiNi0.4Co0.2Mn0.4O2, as the cathode materials for lithium ion battery, were prepared from the precursors, Ni0.4Co0.2Mn0.4 (OH)2 which were synthesized by chemical co-precipitation method. The crystal structure and morphology of the prepared powders have been characterized by X-ray diffraction and SEM, respectively. The results show that Li+/Ni2+ cation mixing decreases with increase of calcination temperature in the range of 700-900°C.The lower degree of cation mixing can improve the transfer of Li ions and lead to layered structure more stable. The discharge capacity and the capacity retention rate of the material is strongly impacted by the reaction temperature.The powders sintered at 900°C show the best electrochemical performance and the initial discharge capacity is 148.3mA·h/g, after 40 cycles, the capacity retention rate is 93.9%.
The Case Analysis of Clothing Display Design Based on the Specific Brand
Authors: Zhi Xu Yan , Zhao Jian Bo
Published: April 2014

According to the Shandong Weifang Market to make analysis based on the clothing brand display, found that many brand counters exist some display errors, or errors in some details in the display of clothing. this article expounds the form process and display analysis display program and proposed amendments by the case of clothing brand display, the new display mode the scheme is more abundant, the visible area is enlarged, and the clothing can fully display its theme.
The Production Management System under Mass Customization
Authors: Shi Yun
Published: April 2014

Mass customization (MC) is an advanced production mode in the 21st century that combines two opposite production patterns -- customization production and mass production. It keeps low production cost and fast delivery time, while meeting individual customers needs. Firstly, via analyzing the typical production management patterns (material requirement planning (MRP)/ just in time (JIT)), and based on the two strategies of modularization and postponement, the paper presented a push/pull manufacturing model to meet the demands of MC. This model integrates the two different production patterns (push and pull) to reduce inventory, production costs and production time. Before the customer order decoupling point (CODP), common components and selective components are produced via push of plan in presence of inventory. After the CODP, customization production is conducted by pull of orders.
The Study on Key Factors Influencing Time Delay of Public Construction Project
Authors: Chang Jin Gui , Li Han Wen
Published: April 2014

Project delay is prevalent and common. How to control project delay effectively is crucial for improving project performance. The 6 kinds of factors Influencing Time delay are distinguished on basis of literature. According to the structural equation modeling analysis step, the data is analysis using SPSS13.0 and AMOS7.0. This paper has made the examination and obtained the final structural equation modeling. So it has provided role for preventing the delay of duration on public construction.
Innovative Design and Stress Analysis of the Mower
Authors: Liu Xing
Published: April 2014

As people's living conditions have become increasingly demanding, increasing domestic urban green area of lawn machinery has entered a rapid development period. Through research and analysis of the existing lawn mower, the existing problems, combined with innovative ways of thinking based on a systematic theory of constraints on mower innovative designs were proposed to trim shrubs and grass and trim the corners mechanical integration , innovative design out of a small area of green space suit, while low noise and environmentally friendly multifunctional mower. And using computer software to carry out important parts of the mower mechanical analysis.
Game Analysis on the IUR Cooperation and Profit Realization
Authors: Liu Ai Jun , Li Shu Juan , Liu Hai Lin
Published: April 2014

How to improve the success rate of the industry-university-research cooperation and form a benign circulation, is the primary topic of current research studies, reasonable investment in research and development is an important guarantee for sharing research results between enterprises and scientific research institutes. It applies the dynamic information game to analysize the input relation between the enterprise and the scientific research institute in the process of the industry-university-research cooperation, and demonstrates the effect of the collaborative pattern on the profit reliezation of the both sides.
Research on the Measurements of the Disequilibrium Degree of the Urban Agglomeration Traffic Supply and Demand
Authors: Li Cheng Bing , Zhao Qing Yu , Guo Rui Xue , Tian Lin Lin
Published: April 2014

Firstly, this paper gives the concept and characteristics of urban agglomeration, and analyzes the relationship between urban transport systems and urban transport group between. Then in urban agglomerations disequilibrium between supply and demand characteristics of the traffic, and analyzes the factors that influence urban agglomeration traffic. And expanding the range of travel modes, including road, rail, air and maritime transport, proposed determination method of urban agglomeration traffic supply and demand disequilibrium. Finally, numerical example is used to analyze its practicality and feasibility.
Effect of Juglone on Migration of Human Ovarian Cancer SKOV3 Cells
Authors: Zhao Liang Zhong , Chen Shuang , Fang Qing , Zhang Duo , Zhu You Peng , Fang Fang
Published: April 2014

Juglone is isolated from many plant species belonging to Juglandaceae family. Recent studies have shown that Juglone exhibits various bioactivities including anti-tumor functions. However, its anti-cancer activity on human ovarian cancer SKOV3 cell has not been examined. Thus, the current study was designed to elucidate the effect of Juglone on migration of human ovarian cancer SKOV3 cells. In the present study, SKOV3 cells were incubated with Juglone at various concentrations. Wound healing assay and Transwell chambers were used to detect migration of SKOV3 treated with Juglone for 24h. The result showed that Juglone inhibited the migration of SKOV3 cells with concentration of Juglone at 25, 50 or 100μM compared with control cells. Therefore, our results indicated that Juglone may be a potential candidate of drug for ovarian cancer.
Exploration of Integrated Teaching Mode of Pharmaceutical Analysis
Authors: Yuan Guang Xin , Li Hong Yu , Sheng Yu , Zhang Li Hua , Du Pei Ge
Published: April 2014

According to adjustment of teaching program, integration of curriculum, compilation of teaching materials, open laboratory, we explore the integrated teaching Mode in Pharmaceutical Analysis. The results showed that this teaching way can not only stimulate the students interest in the learning, deepen their understanding on the knowledge, but also cultivate their creative thinking and research ability, and to some extent, improve the students' independent thinking, analysis and problem-solving abilities.
Proliferation Inhibition and Apoptosis Induction of Juglone on Human Cervical Cancer HeLa Cells
Authors: Zhang Wei , Zhu Wen He , Li Yan , Luo Jun , Lv Shi Jie
Published: April 2014

Abstract: To investigate whether juglone could inhibits the proliferation on human cervical cancer cells (HeLa) in vitro. Cells were divided into control group, different concentration (10μM, 20μM, 50μM, 100μM and200μM) juglone groups for different durations. The viability of HeLa cells was detected by methyl thiazolyl tetrazolium (MTT) assay. The morphology changes of HeLa cells were observed by inverted microscope .The results showed that the viability of HeLa cells was decreased and the cell morphology was changed in a dose-dependent manner after treatment different concentration juglone for 24h when compared with control group. The results suggest that Juglone may be effective for the treatment of HeLa cells.
Research on Improvement of Sulfate Reduction Capability of Sulfate Reducing Bacteria by Plasma Mutagenesis
Authors: Zhu Yan Yun , Liu Ting , Zhang Jun
Published: April 2014

Sulfate reducing bacteria were screened from the soil of Anhe tailing pond in Baoji in China. 22 Sulfate reducing bacterial strains were isolatedand their tolerance ability to cadmium and sulfate reduction capability were determined by nephelometry and barium sulfate precipitation, respectively. One strain named STP2-1-5 with higher sulfate reducing capacity were isolated and identified by 16S rRNA sequencing. Then it was treated by using Dielectric Barrier Discharge (DBD) plasma mutagenesis and their mutants called STP2-1-5(2) and STP2-1-5(4) were obtained. The datum showed that their sulfate reduction capacity increased by 0.1855 and 0.4820 than original bacteria respectively. STP2-1-5(2) and STP2-1-5(4) might be used in the cadmium contaminated soil remediation.
An Experimental Study on the Rainfall-Runoff Progress of Wheat under Different Slope Angle
Authors: Zhao Na Na , Yu Fu Liang , Li Chuan Zhe , Liu Jia , Wang Hao
Published: April 2014

Rainfall-runoff process plays an important role in hydrological cycle, and the study on the rainfall-runoff will provide foundation and basis for research on basin hydrology and flood forecasting. In this paper, the surface runoff and subsurface flow of wheat were observed in the laboratory by artificial rainfall, and analyzed the cumulated surface runoff and recession process of subsurface flow by regression analysis. In addition, the factors affected the runoff and response of soil moisture on the runoff coefficients was also discussed. Results showed that the rainfall intensity, soil coverage and slope had important influence on the surface runoff generation, and the surface runoff was observed when the total rainfall amount exceeded 32mm and 13mm for 5°and 15° slope respectively. The cumulative surface runoff could be expressed as a power function, which had higher determination coefficient R2 (0.92~0.999). The subsurface flow was only observed at the ripening period and wheat stubble treatment, and mainly affected by slope angle and initial soil moisture, whereas rainfall intensity showed little impact. The recession curve of subsurface flow can be described as a simple exponential expression or power function, which the determination coefficient was 0.88 and 0.94 by regression analysis, respectively. Moreover, there was an obvious threshold (approximately 30%) between the average initial soil moisture and runoff coefficients, which the runoff increased significantly as above the threshold.
Influence of Heat-Treatment on Mechanical Properties and Wear Resistance of Ultra-High Mn Steel
Authors: Liu Yong Hong , Li Jie , Shao Wei
Published: April 2014

The influence of heat-treatment on mechanical properties and wear resistance of ultra-high Mn steel was studied, micro-structure and fracture surface were analyzed by optical microscope (OM) and selected electron microscope (SEM). According to the results, optimized heat-treatment makes improvement in mechanical properties, and dispersed tiny carbides precipitate on Austenite matrix instead of grain boundary contributes to the excellent mechanical properties and wear resistance.
Inhibiting Effects of Taurine on Doxorubicin-Induced Oxidative Stress in Rats
Authors: Wang Yan Chun , Ren Kuang , Lu Qian , Fan Hong Yan , Shen Nan
Published: April 2014

The study was designed to observethe protective effect of taurine(Tau) against doxorubicin-induced cardiotoxicity in rats.Doxorubicin were administered at the dosage of 2.5 mg·kg-1 oncea week, ip for a period of 4 consecutive weeks. Taurine were administered atthe dosages of400,200and 100 mg·kg-1·d-1, poby gavage for 30 consecutive days. Taurine at the doses of 400 and 200 mg·kg-1significantly reduced CK-MB, GOT and LDH and increased SOD levelsin the doxorubicin-treated animals. Thus, taurine ameliorated doxorubicin-induced cardiotoxicity by reducingoxidative stress, abnormal cellular morphology in rat. The study show the protective effect oftaurine against doxorubicin-induced cardiotoxicity.
Effect of High Temperature Stays Process on Ultra-Low-Carbon Bainitic Steel without Nb, Ti and other Metal Compounds Forming Elements
Authors: Yang Wei Wei , Liu Qing Suo , Yuan Lian Jie
Published: April 2014

The influence of high temperature stays process on the directly cooling experimental ULCB steel had been investigated. We found that the process of high temperature stays had effect on the ULCB steels phase transformation point, and made the CCT curve move to top left. When the cooling rate increased, the formation and growth of granular bainite would be inhibited, but the formation and growth of bunchy bainite would be promoted. And the high temperature stays process had a weaker effect on the specimens structure when specimens were cooled slowly. Key Words: high temperature stays; cooling rate; bunchy bainite; granular bainite
Preparation and Properties of γ-Rays Irradiation-Induced Crosslinked Sulfonated Polyimide Proton Exchange Membranes
Authors: Li Yu Han , Jin Ri Zhe
Published: April 2014

To improve the performance of sulfonated polyimide (SPI) membrane, especially to heighten water stability, γ-rays irradiation-induced crosslinking is used to modify the SPI membrane. The effects of radiation crosslinking on SPI membrane are investigated. Their physical properties, membrane morphology, proton conductivity, membrane stability and mechanical property are measured and reported. In this study, 24 hours radiation treatment endow the SPI membrane (SPI-24h) with the optimum performance, remarkably improved the water stability with only slight sacrifice in proton conductivity.
Preparation of β-Cyclodextrin Coated Fe3O4 Nanoparticles and their Application for Enrichment of Cu(II) from Environmental Water Samples
Authors: Wang Qiao Ling
Published: April 2014

Fe3O4@β- cyclodextrin magnetic functional nanometerials have been successfullysynthesized and developed as a magnetic solid phase extraction for thedetermination of trace Cu(II) in environmental water samples. The resultsindicate that:adsorption rate is effeceed by pH、temperature、time and capacity .And at pH of 7 and 55°C,the adsorption rate ofβ-cyclodextrin Fe3O4magnetic microspheres to Cu(II) canup to 97%, and static adsorption capacity was 28.51mg/g.Besides,someenvironmrntal samples’s results were satisfacting as recovery is in the rangeof 95.9%-102%.
Damage Analysis for Multilayer Composite Material
Authors: Yao Yi Yong , Zhao Li Ping , Hu Sheng , Bai Wen Jie
Published: April 2014

After studying the influencing factors and interaction rules of the damage for reinforced carbon fiber in different jet medium on the basis of analyzing carbon fiber damage for traditional acupuncture process, a lower damage process scheme of preform based on jet for layered carbon fiber composite is proposed in this paper. Firstly, the carbon fiber puncture damage is clustered and formal described by using graph theory, which the analytical method for a complex combination of puncture damage is obtained successfully. Then the stress and strain distribution of carbon fiber puncture damage is analyzed through simulation. So this paper has proposed a new technical approach for improving the quality of the needle perform.
Study on the Interaction between Gadolinium(III) Aminopolycarboxlicacid Complex and Bovine Serum Album by Spectroscopic Methods
Authors: Hao Zhi Feng , Yu Can Huang , Yang Shao Bing , Tan Jia Hao , Yu Jian
Published: April 2014

A novel gadolinium diethylenetriamine-N, N-bis (2-acetamide benzoic acid)-N, N-bisacetic acid complex has been synthesized and characterized by elemental analysis, infrared spectrum, ultraviolet spectroscopy and thermal analysis. The interaction between Gd3+and aminopolycarboxlicacid ligand was investigated by fluorescence titration. The binding constant of this complex is calculated to be 1.2018×104L·mol-1, and binding stoichiometry is 1:1. Fluorescence spectra was also used to study the interaction between Gd (III) complex and bovine serum album (BSA). The results showed that Gd (III) complex can effectively quench the intrinsic fluorescence of BSA via static quenching. According to Stern-Volmer equation and Linewerver-Burk equation, the binding constant is calculated to be 3.7491×104L·mol-1and binding site is about 1.0.
Synthesis and Electrochemical Characteristics of Li3V2(PO4)3/C Cathode Materials for Li-Ion Batteries
Authors: Zheng Lu , Peng Hony Yuan , Wang Jian Hua , Guo Yu Zhong
Published: April 2014

Li3V2(PO4)3/C composites were synthesized by sol-gel routine with citric acid as chelates and carbon sources at different preparation conditions , meanwhile saccharose has been used to separate the Li3V2(PO4)3/C particles When it dissolve out in the process of solvent volatilizing. The effects of different preparation conditions and the existence of saccharose on crystal structure and electrochemical performance were characterized by XRD, SEM and electrochemical workstation. The results shows that all the Li3V2(PO4)3samples are pure monoclinic phase; The crystal structure and the lattice parameters remain unchanged in different conditions, but it has effects on their average size of particles. The existence of saccharose suppress the growth of particle size and particle aggregation, and then affect electrochemical performances indirectly. In addition , the cycling performances of all samples displayed well at 3.0~4.2V on low rate charge/discharge, but the rate performance become worse with the increasing of average size of particle and particle aggregation and the capacity reduces seriously on high rate charge/discharge.
Acoustic Emission Attenuation and Source Location of Resin Matrix for Wind Turbine Blade Composites
Authors: Pang Yan Rong , Lv Zhi Hui , Liang Xiao Min , Chai Han Chang , Liu Ruo Chen , You Shao Qing , Zhou Wei
Published: April 2014

In recent years, acoustic emission (AE) testing technology is the one of the most important non-destructive testing (NDT) methods. The characteristics can be described by AE signals, including the location, nature and severity. In order to obtain the basic data for monitoring the wind turbine blade composite structure, the experiment adopted Φ0.5 mm lead pencil as artificial acoustic emission source and measured AE parameters, attenuation and source location of resin matrix for wind turbine blade. This paper introduced linear location and two-dimensional positioning technology of time arrival location method about the burst AE signal. The result shows that the location of AE source basically reflects the location of stimulation AE source, the location of AE source for resin matrix can agree well with the simulated location of AE source, the more close to the middle area, the more accurate location.
Technology Strategies of Bending Forming for Part of Large Size and Ultra Thin-Walled
Authors: Liu Hong , Fu Jia Wu , Luo Li Li
Published: April 2014

In this paper, on the basis of bending forming force and deformation analysis for a stainless steel part in a precision instrument, the combination mould having filling and support function is designed for the part with large size, ultra thin-walled and non-closed cross section structure characteristics. Combined with the forming process, the technological measures are proposed to eliminate the bending forming deformation by using the way of incremental forming control and the gap control between mould and part. And the forming process and the reliability are verified by the practical application.
The Actoside Content Analysis in Radix Rehmanniae Using Near-Infrared Technology
Authors: Gong Hai Yan , Xie Cai Xia , Cui Yong Xia , Chen Zhi Hong , Bai Yan , Zhang Juan
Published: April 2014

In this paper, near-infrared diffuse reflectance spectroscopy was used to analysis the acteoside content of Radix Rehmanniae. The quantitative calibration models of acteoside content were established by the partial least square (PLS). The results showed that the correlation coefficient of calibration (R2) was 0.98102, the root-mean-square error of calibration (RMSEC) was 0.00464, the root-mean-square error of prediction (RMSEP) was 0.00163, and the average recovery rate was 104.837%. So the recovery of prediction set was available. The results indicated that it was available to determine the content of actoside in Radix Rehmanniae by near-infrared spectroscopy.
The Analysis of the Teaching Based on the Work Process in the Plastic Molding Process and Mold Design
Authors: Wang Zhen
Published: April 2014

The plastic molding process and mold design is a core professional courses of mold design and manufacture. By teaching this course to explore The teaching based on the work process, we Strengthen the Vocational practical skills training of students, and explore a training model of Combining teaching and production.
Adsorption Kinetics for the Extraction of Cesium(Ι) from Aqueous Solutions on Potassium Zinc Hexacyanoferrate
Authors: Gao Dan Dan , Liu Xin , Bian Shao Ju , Li Wu , Wei Ming
Published: April 2014

Potassium zinc hexacyanoferrate (KZnFc) was synthesized, and the adsorption amount at equilibrium and adsorption rate of uptake of cesium (I) on KZnFc from several aqueous solutions was investigated comprehensively by varying the initial cesium concentration and temperature. The rate of uptake of cesium was analyzed using pseudo-first-order and pseudo-second-order kinetic models. This study will be helpful for understanding the adsorption mechanisms of cesium ion, and KZnFc could be used as potential adsorbent for adsorbing Cs (I) from oil field water of Nanyishan.
The Multi-Channel Filter Based on Photonic Crystal with Circular Resonant Cavity
Authors: Wu Zhao Xia , Li Yu Cheng , Jin Wei , Gu Er Dan , Li Wen Chao
Published: April 2014

A photonic crystal model with circular resonant cavity is reported in order to achieve high efficiency and multi-channel filtration. Design a multi-channel filter based on its transmission properties. The distributions of the light energy of different wavelengths are given. As a result, the photonic crystal with circular resonant cavity has output efficiency of 75.5%99% and 100% when the wavelength is 1447nm1535nm and 1628nm. As the dielectric constant increases, the output wavelengths change. So, we can use this method to adjust the output wavelengths. Meanwhile, when the centre wavelength is 1447nm and 1535nm the multi-channel filter can output in different directions.
A Study on the Production and Material Characteristics of Modular Unit of Highly Filled Wood-Plastic Composite Member
Authors: Shon Su Deok , Lee Seung Jae , Lee Kang Guk
Published: April 2014

In this research, a study is made on the production and manufacturing process of the WPC unit member with 70% of wooden fiber contents, and described the productivity and durability of various modules based on factory-production-and-assembly-at-site system. Further, the study explained about the basic manufacturing process of eco-friendly highly filled extrusion-formed WPC, its unitification and material and mechanical characteristics.
Acoustic Emission on Adhesively Bonded Single-Lap Joints of Composite Laminate during Tensile Test
Authors: Pang Yan Rong , Liu Ran , Li Ya Juan , Lu Bo Han , Xing Xin Kang , Zhou Wei
Published: April 2014

Acoustic emission (AE) was used to monitor the tensile test of composites with adhesive specimens. The mechanical response behavior, damage and failure characteristics, and the corresponding AE characteristics of the composites have been investigated. The results show that the load of the join with defect in the adhesive layer is lower than the join with no defect. The higher AE relative energy and the AE amplitude were obtained in the adhesive specimen with defect in the adhesive layer whereas the variation of the AE relative energy is different from the adhesive specimen with on defect. The characteristics such as AE amplitude distribution, relative energy and cumulative hits are connected with the tensile damage and failure of the adhesively bonded single-lap joints of composite laminate. In the actual AE monitoring, these feature parameters should be considered entirely assess the damage and failure of the composites structures.
Effect of Nucleating Agent on the Structure and Mechanical Properties of Oriented PET
Authors: Xu Qian Wei , Meng Xian Kun
Published: April 2014

Effect of nucleation agentboth on the toughness and the orientation of PET were studied. Rapid nucleationof melted PET caused by nucleating agent resulted in the decrease in grain sizeand it can improved the toughness of the PET. Both the elongation and the areaunder stress-strain curves of the PET strapping band increased significantly.Among these agents, 0.5wt% Aclyn is the most effective for elongation increaseand the tensile strength is not changed for PET/Aclyn strapping bands. Both thedecrease in orientation degree and the increase in crystallinity were observedafter adding nucleating agents in PET strapping bands. The increase in theresidual ratio of the relaxation stress with the increase of the crystallinity proved that the crystallization could inhibits thedevelopment of the stress relaxation.
Failure Analysis of Water-Wall Tubes in the High-Pressure Boiler
Authors: Xu Na , Shi Jun Bo , Li Yong De , Guo Wei Min , Wu Xiao Feng , Han Shu Xin , Zang Qi Shan , Hu Zhi Wen
Published: April 2014

In this case study, the corrosion failure analysis of high-pressure boiler water-wall tubes in a power plant was investigated by means of the chemical analysis, metallographic examination and scanning electron microscope (SEM) observation. Energy dispersive spectroscopy (EDS) was used to examine the changes of test materials and corrosion products. Based on the failure process of the boiler water-wall tubes and the experimental results, a conclusion was drawn that the failure of water-wall tubes was mainly caused by pitting corrosion. Sulfide and chloride attack was the major cause of localized pitting corrosion on the inner surface, and the outer surface damage was mainly due to the synergism of high temperature sulfide corrosion and flue gas erosion.
The Research of Quantum-Behaved Particle Swarm Optimization in Gear Steel Hardenability Prediction
Authors: Chen Yu Ping
Published: April 2014

Problems of uncertainty for gear steel hardenability control in rolling process, this article will applied improved Quantum-behaved Particle Swarm Optimization algorithm to the uncertainty, using the optimization algorithm to train the neural network by improving quantum groups, build optimized gear steel quenching permeability control neural network model. Simulation results show that this algorithm is an effective solution to the problem of gear steel hardenability predictive control.
Keywords: Quantum-behaved Particle Swarm Optimization, gear steel, Hardenability
The Impact of Coal Tar Yield and Properties Research
Authors: Wang Yan Mei
Published: April 2014

coal pyrolysis and pyrolysis products deep processing is an effective way to achieve efficient use of clean coal , has important theoretical and strategic significance. Through the analysis of the nature of the low-temperature coal tar , coal pyrolysis mechanism from starting , discusses the improved yields five factors of coal tar and coal tar is proposed to improve the yield of several process conditions.
The Effect of Component Distribution Variation on Tensile Property of Gradient Interpenetrating Polymer Networks (IPN)
Authors: Bai Xue Lian , Mu Zhong Guo , Ting Mei Jian , Ding Luo Yi
Published: April 2014

In the paper, Polyurethane (PU)/Epoxy (EP) gradient IPN with different component distribution were prepared , The effect of component distribution variation on tensile property of gradient IPN was studied through change of layer number and gradient factor K. The results indicate that tensile property of gradient IPN increases with increase of layer number n, when gradient factor is below 1, tensile strength of gradient IPN decreases slightly with increase of gradient factor K, While gradient factor K is above 1, tensile strength of gradient IPN undergoes remarkable decline trend. When gradient IPN has rational continuous change extent and gradual change span,It has better tensile property than ordinary IPN.
Research and Application on Oil-in-Water Emulsion for Selective Water Plugging
Authors: Wu Gang , Zhang Li Li , Xie Gang , Zhang Wei , Ju Deng Feng , Lin Sha , Hao Hui Jun , Du Qing Zhen
Published: April 2014

Heterogeneity, Permeability ratio, Selective water plugging agent, Oil-soluble resin
Abstract. In view of high heterogeneity and complicated oil-water relation of fault block oil reservoirs, conventional technology of water plugging and profile controlling cannot well adapt to it. An oil-in-water emulsion for selective water plugging was designed by using emulsified heavy oil for reference and the aim was to improve the injection ability and plugging strength. The single core flooding results indicated that its breakthrough pressure gradient >26MPa/m,water plugging rate >97% after water flooding for 100 pore-volume. The parallels core flooding results indicated that it has good water flooding endurance than emulsified heavy oil, and can be used to the selective water plugging and profile controlling of heavy heterogeneous layers with the permeability ratio is no less than 7. Field application is successful.
A Method to Establish Motion Equations of Self-Propelled, Cable-Controlled Vehicles
Authors: Li Lin , Zhang Yan Hui , Yang Ping
Published: April 2014

The cable tension of cable-controlled vehicles solved by differential equations is a numerical solution, not analytical solution, making it difficult to establish their motion equations. Through research, this paper proposes that cable tension is the function of the vehicles motion position, through data analysis, the function relation formula of cable tension can be found, and by using regression method on large amount of tension data of a certain type of ROV, the mathematical expression of specific cable tension could be found, which lays a solid foundation for establishing motion equations of cable-controlled vehicles and researching their law of motion.
Atmospheric Laser Communication Receives a High Rate of Laser Technology
Authors: Liu Quan , Yang Xu , Zhu Yi Feng
Published: April 2014

This paper mainly discusses laser receiver technology at atmospheric channel high-rate environmentThesis analyzes the influencing factors of atmospheric laser transmission channel, Discussed the composition of the laser receiving system to study the floating threshold signal detection method of the laser, Study interleaved RS code + code to achieve channel coding scheme, the final results of the tests are given under the channel environment is a high rate of atmospheric laser receiving system.
CFD-Based Visualization Research on the Rotation of Hydraulic Slide Valve Spool
Authors: Yuan Bin , Jiang Zhu
Published: April 2014

The hydraulic slide valve with round orifice spool is often used in hydraulic control system. But it is prone to rotate when the hydraulic oil flow is large. The three-dimensional fluid analysis technology was used to numerically simulate the flow field in the hydraulic slide valve. By using the pressure and velocity characteristics generated for different spool structures by the CFD numerical analysis, the main reason of slide valve rotation was analyzed, which can provide basis for the optimal design of the slide valve structure.
Characteristic Analysis on Elastohydrodynamic Lubrication of Orthogonal Face-Gear
Authors: Wu Can Hui
Published: April 2014

Face-gear lubrication characteristic is a important indicator to estimate the scuffing load capacity. In this paper, the model of face-gear loaded tooth contact analysis (LTCA) was established, and the load distribution among tooth were calculated, then the entrainment velocity and contact stress calculation equations of face-gear drives were derived. On this basis, face-gear Elastohydrodynamic Lubrication (EHL) dimensionless equations were established. Using the multi-grid algorithm to complete the solution of minimum film thickness and film pressure of face-gear drives. Through the calculation example, lubricant film thickness and film pressure variation in the meshing cycle were expresented. It provideds the technical basis for calculation of scuffing load capacity of face-gear.
Claw-Pole Closed Forging Process
Authors: Xin Xuan Rong , Xu Ding , He Cheng Song , Liu Xin Cheng
Published: April 2014

Aimed at the present domestic problems in the forging process of claw pole, such as insufficient corner filling, excessive forming force and short life of dies. On the basis of the analyzing in the claw pole, a new process named the closed hot die forging, direct extrusion process of claw pole is constituted. The numerical simulation using DEFORM-3D and the special mould are used in the forging experiment in order to check the new process. The results show that, new technology has greatly reduced the forming force, thereby reducing the production processes and improving the life of dies for mass production.
Characteristics of Magnetic Susceptibility of Rocks from the Iron-Copper Deposit in Dongchuan Region of Yunnan
Authors: Lu Jia
Published: April 2014

The magentic susceptibility of rocks, breccia, dolomite, diabase, slate, siltstone and tuff are main concern, have been measured in the Dongchuan region of Yunnan, China. The experimental data suggest that different rocks have different magnetic susceptibility, and magentic susceptibility of igneous rocks is the highest and has big variation, that is represented by diabase, and these characteristics always react on identification of rock types quickly in the field operation and laboratory technique. As an economic and effective technique, the magentic susceptibility is important magnetic parameters for the rocks in Dongchuan, at the same time is also an obvious sign in looking for cupreous magnetite.
Design on Multifunctional Water-Saving Mulch Planter
Authors: Chen Li Dong , Du Feng Yong , Du Feng Bao , Wang Wei Zhi
Published: April 2014

In order to improve the seeding efficiency and quality of water-saving mulch planters, a kind of multifunction mulch planter with laying irrigation tape was designed based on duckbill type precision seed metering device. It broke the pattern of single planting machine and realized duplex joint seeding operations. The seeding and film mulching performance were also improved by optimizing the seed metering device and film laying device. The planter has the characteristics of simple operation, less investment, reliable performance and good film-mulching result. The result of field test showed that: the average seed space is 150mm; the working speed is 4.3km/h; the pass rate of grain distance is 96.7%; the vacancy rate is 0.8%, the pass rate of seed number is 99.2%. So the sowing quality of the planter is well.
Design on Transmission Accuracy Testing System of Actuator
Authors: He Ping , Liu Chao , Li Ying , Zhao Zhi Qiang
Published: April 2014

Actuator is the main executive mechanism for the attitude control of aircraft in the aerospace industry and aviation field. With the further development of technology, higher quality of product research and detection has been required. According to the test requirements, the actuator nonlinear parameter testing system is designed to realise the automatic detection for actuator transmission mechanism on the basis of the research in nonlinear measured parameter of tranmission accuracy. Firstly, the principle and detection scheme of the system was presented. Then the overall structure of the system was designed. After that, the hardware circuit of the system which used TMS320F2812 as main control chip was designed. It mainly consisted of the function of each module and the working process of the system. Finally, the software of the image acquisition system was presented. With the experimental verification, the system realises the automatic detection for tranmission accuracy and has advantages of low cost, high efficiency and strong resistance to interference. The functions and indexes achieved the design requirements..
Discussion of the Assembly Techniques of the Precision Die
Authors: Bai Xi Ping
Published: April 2014

Taking different types of punching dies as examples, this paper analyses the assembly requirements of precision punching dies under different structural features, key technical problems need to solve, assembly process and so on; and introduces the main components assembly methods, main points and skills.
Dynamic Modeling Based on Zero Side-Slip Angle of the Gravity Center for Multi-Axis Steering Vehicles
Authors: Li Zhuo Qing , Tang Lan , Liu Rui
Published: April 2014

This paper discovers the dynamic modeling process based on equilibrium condition of forces and moments, in order to improve handling stability, the side-slip angle need to be reduced to zero, special process is used in the dynamic equations simplification for demanded theoretical steering angle of each axel. At last this systems steady-resonance characteristics are researched.
Fault Analysis of Stator Inter-Turn Short Circuit in Doubly Fed Induction Machines
Authors: Xu Bo Qiang , Wang Jing Ting
Published: April 2014

The doubly fed induction generator (DFIG) is an important component of wind turbine systems,so the fault analysis is great necessary.This paper shows a way to analysis the features of stator inter-short circuit fault,which is based on multi-circuit theory.The fault features of stator inter-turn short circuit in doubly fed induction are analyzed in this paper,deeply and thoroughly.Then a multi-loop model was carried out to simulate 5.5kW DFIG ,which was in normal conditions and in cases of fault of stator inter-turn short circuit,respectively.A fourier transformation was applied to analysis the simulation results,especially about short circuit current.
Geothermal Energy Saving Air Conditioning System Research
Authors: Wang Jian Yu
Published: April 2014

The Geothermal air conditioning has been introduced the working principle ,classification and application in this paper , mainly introducing the design of the two kinds air conditioning, refrigeration and air conditioning system . And we put forward own views that the problems existing in the geothermal air-conditioning and the future direction .
Hardware Circuit Design of a Wire Rope Tension Monitoring System for Main Shaft Hoist
Authors: Zhang Yi , Sun Hui Zhi
Published: April 2014

The paper introduces the harm of main shaft hoist wire rope tension imbalance and the main method of tension tests according to the actual situation of the scene, it proposes a method of steel rope tension on-line monitoring system, then it carries on the design of the system hardware circuit and experiment proves that the scheme is feasible.
Improved Auto Brake and Avoidance
Authors: Zhang Yong Yong
Published: April 2014

Abstract: Aiming at the shortage of "ultrasonic ranging vehicle anti-collision alarm system design" , because the anti collision system just avoid having collision in front of the car, without considering the back of the car, in order to avoid hitting the car before and after ,so according to the above problem ,we improve the system.
Modal Analysis of the Bed Structure of Large Diameter Fresnel Lens Mold Machine Tool
Authors: Guan Jia Liang , Zhang Xiao Hui , Cao Cheng Guo , Ma Xin Qiang , Chen Ling
Published: April 2014

Modeling of the large diameter Fresnel lens mold machine tool bed using 3D software solid works, and then import the ANSYS Workbench, natural frequencies and modal shapes are obtained by the study of the modal analysis and analysis of the structure characteristics of the machine bed, for the next step on the bed structure optimized to provide a reliable theoretical basis. Keywords: the bed; ANSYS Workbench; modal analysis; natural frequencies
Research on Hydraulic Components Test System Based on Proportional Control Technology
Authors: Li Yao , Yi Jian Gang
Published: April 2014

Proportional control technology is widely used in many hydraulic systems. In order to measure the characteristics of hydraulic components, it is necessary to establish hydraulic components test system based on proportional control technology. In this paper, the test contents of hydraulic components are analyzed, the performance testing system is designed, the system construction is presented, and the computer test software is developed. The application results showed that the developed system has good value, which can not only be used directly in enterprise to solve the production problem, but also improve the utilization and reliability of hydraulic components.
Research on Modeling of Cutting Force on CNC Lathe Based on Orthogonal Experiment
Authors: Zhou Zhi Heng , Zhang Chao Yong , Xie Yang , Luo Ming , Shao Xin Yu
Published: April 2014

Through experiments and orthogonal regression, the cutting force model of machining bars on a CNC lathe HCK60 equipped with the Huazhong CNC system is established. The model is simplified by using the knowledge of matrix theory, and we got the cutting force prediction empirical formula. The verifiable experiments show that the errors between predicted values and measured values are almost within 10%, which validates its high credibility. In addition, it can provide boundary conditions for the finite element analysis of CNC machining deformation, which is very important for application value.