bluuebunny/crossref_metadata_2025 huggingface dataset:
Fault Diagnosis of Grounding Grid Based on Principal Component Analysis and Fuzzy Clustering
Authors: Zhao Ke Xin , Peng Min Fang , Tan Hu , He Shu Di , Shen Mei E , He Jian Biao
Published: September 2013

The problem of grounding grid fault causes great economic losses, so accurate and efficient fault location is becoming more important. This paper puts forward a new method of fault diagnosis for grounding network.Taking voltage values of test point as fault characteristics and making use of principal component analysis extract fault features from training and test samples, which can eliminate the correlation between the fault symptoms.Taking fuzzy clustering for the samples after feature extraction can get clustering center. By testing sample membership of each sample and each cluster center can diagnose the fault. The outcomes verify that utilizing principal component analysis and fuzzy clustering to solving the fault location of grounding network has good diagnostic effectiveness and efficiency.
Optimization of Level Set Segmentation with Nonlinear Coherent Diffusion
Authors: Gao Yong Hui , Wang Sheng Zheng , Yang Jie
Published: September 2013

Level set method is convenient in image segmentation for the stabilization and veracity. Gaussian filter is usually taken as a preprocess to reduce the influence of weak edges due to noises, but the disadvantage is obvious: blur fine structures specially the important boundaries and lead to inaccurate segmentation result. This paper introduces a robust method which filters the images with a Nonlinear Coherent Diffusion (NCD) to accelerate the evolution of level set in a spatially varying manner. Experimental results show the performance of the proposed method in improving precision of segmentation.
Fault Section Location in Distribution Network with DG Based on Voltage Sag Correlation Coefficient
Authors: Du Xin , Peng Min Fang , Zeng Hong Mei , Zhu Liang , Che Hong Wei , Liu Zheng Yi
Published: September 2013

A fault location method based on correlation coefficient was proposed in the paper for the distribution system with distributed generation (DG). At first, by acquiring the Thevenin equivalent parameters of each DG to establish simulation model of the actual distribution network. Then voltage sag feature vectors of each bus would be obtained by simulating short-circuit fault at the location of each bus, respectively. Afterwards, by calculating and analyzing the correlation coefficient between each bus and the actual fault node,, suspicious fault sections can be determined. Finally, the fault section was identified by utilizing the associated node of every suspicious fault section .The method could reduce the fault search range obviously, without a massive requirement of measuring devices, and the required data can be obtained easily. Simulation results of a 10kV distribution network with DG showed that the proposed method was accuracy and effective.
Effect of Poles to the Automatic Control System
Authors: Jin Gang , Li Ai Hua , Hu Guo Ying , Fan Wen Qiang , Liu Yun Xue , He Peng Fei
Published: September 2013

The distribution of poles affects the property of the automatic control system. The paper studies how the poles in the left half of s-plane affect the transient performance of the system by Matlab tools and analyzes the reasons for these effects. Discuss the different effects of the closed-loop poles and the open-loop poles to the same automatic control system.
Fault Locating of Grounding Grids Based on Extreme Learning Machine Elman Neural Network
Authors: He Shu Di , Peng Min Fang , Zhao Ke Xin , Li Ling Jian
Published: September 2013

In order to improve the accuracy and efficiency of the fault location in grounding grids, a new method combing Extreme Learning Machine (ELM) with neural network was proposed. The method compares the voltages of different node to determine whether the branch is fault or not. The simulation results show that this method can save time and improve accuracy.
Study on the Method of Radar Servo System Faults Diagnosis Based on Expert System and Neural Network
Authors: Ding Qiu Qi , Tao Min , Li Ren Long
Published: September 2013

Aimed at these shorts of the unity expert system in radar servo system fault diagnosis, analyzing the structure of radar servo system and characteristic of equipments fault, a new method of neural network interfused with traditional expert system is presented in radar fault diagnosis. The frame and function expression of radar fault diagnosis system based on neural network and traditional expert system are given. The select method of diagnosis parameter and the setting up process of knowledge database and module of neural network are analyzed.
Research and Implementation of Time Synchronization Protocol Based on the ZigBee
Authors: Huang Sen Mao , Yang Guang You , Ma Zhi Yan , Zhang Zheng
Published: September 2013

ZigBee technology is more and more used in complex and bad industrial monitoring and control environment. At the same time, ZigBee nodes are usually powered by batteries, so prolonging the working time and reducing the power consumption of the nodes is very important. If the wireless nodes can turn into sleep mode in spare time of communication, it will further reduce the node power consumption. But in sleep period, the node can't communication with other node, we need to synchronous awaken and dormancy, so precise time synchronization for wireless sensor network application is particularly important. This paper will apply FTSP algorithm in the ZigBee network and realize the network time synchronization. At the same time, it doesn't increase power consumption of the network.
CANbus Hybrid Scheduling Algorithm Based on DMS and EDF
Authors: Ma Zhi Yan , Tang Zong Mei , Yang Guang You , Su Xu Wu
Published: September 2013

By studying static scheduling algorithm Deadline Monotonous Scheduling (DMS) which assigns the priority fixedly to each message based on its deadline before starting the system and dynamic scheduling algorithm Earliest Deadline First (EDF) which assigns the priority dynamically based on its remaining deadline in the running time of system, combining the cheap CPU cost of DMS and high network utilization of EDF and using the layered structure, we presented a hybrid scheduling algorithm with considering critical level of messages. Based on the work mentioned above, the simulation platform of CANbus is developed with MATLAB/SimEvents tool box. The platform was used to real-time analysis for the scheduling algorithms mentioned before, the simulation results showed that the hybrid scheduling algorithm could not only improve the real-time performance of system, but also reduce the cost of processor.
The Allocation and Statistics of Quota of Teaching-Practicing Normal Graduates: Based on Excel Built-in Function and VBA
Authors: Wu Hong Juan , Guo Jiao
Published: September 2013

This paper proposes an VBA add in function for excel for a dynamic statistics and allocation table for the quota of teaching-practicing normal graduates. The add in function initially calls some built-in functions such as SUMPRODUCT to sum all interlaced and partition columns. Then it applies the "protection attribute" of cell and "protect worksheet function" to protect the worksheets layout and existing formulas. After added the menu design by VBA programming, it finishes the dynamic statistical sheet in form of the template. This add in function has been approved that the efficiency of allocating the quota of teaching-practicing graduates can be improved a lot through this powerful add in.
Study on Transformation Behavior of Retained Austenite in TRIP Steel
Authors: Shui Heng Yong , Tang Di , Liu Qiang
Published: September 2013

The microstructures of CR600TR steel were characterized using optical metallography, SEM, TEM and EBSD techniques, especially the transformation behavior of retained austenite and fracture mechanism of TRIP steel under stress-strain were studied in detail. It is discovered that there is marked selectivity for those retained austenite grains in their transition sequences: they are even dependent on the extension paths of stress-strain in steel and that curvatures of grain-boundaries which the retained austenite grains lie in.
Crystallization Growth of Titanium Silicalite-1 over Monolithic Cordierite Support
Authors: Yang Li Bin , Zhu Zun Lu , Sha Zuo Liang
Published: September 2013

Titanium silicalite-1(TS-1) membranes were prepared on cordierite support by hydrothermal treatment. The TS-1 membranes were characterized by scanning electron microscope (SEM), X-ray diffractometer (XRD) and FT-IR, The factor that the ratio of TPA+/Si on influencing TS-1 crystal was investigated and it was indicated that the ratio of TPA+/Si had a strong effect on its morphology. The TS-1 crystal presented ellipsoid when ratio of TPA+/Si was 0.15. However, the morphology of TS-1 crystal changed to coffin-shaped when the ratio of TPA+/Si increased to 0.4. Each lattice plane of TS-1 crystal grew on cordierite support with different speed which was controlled by concentration of structure-directing agent SDA (TPAOH) in precursor solution. The mechanism of TS-1 crystal growth on cordierite support maybe that the TPA+ in the solution attracts silicate species, titanium species to form inorganic-organic composite species, the aggregation the inorganic-organic composite species formed crystal nucleus, the morphologies changed due to the growth rate of different lattice planes.
A Review on the Binary Oxide Nanomaterials for the Electrochemical Performance
Authors: Wang Xiao Li , Han Xu , Yu Shi Jun
Published: September 2013

Recently, many research efforts have been devoted to developing new strategies for fabricating oxide nanomaterials owing to their widespread potential applications. In this article we review the current research activities on the fabrication of inorganic oxide nanomaterials. The application of oxide nanostructured materials in the field of lithium ion batteries will be obtained in the mainly parts of paper.
Study on Hydroxyapatite Fibers with Strontium Reinforced Calcium Phosphate Cement
Authors: Chu Bin , Xiong Jian , Wang Ming Bo , Li Xiao Li , She Zhen Ding
Published: September 2013

The solidification time of injectable bone cement should be fit for the clinical application. This research find out the effect of the amount of water-absorbent agent and water-retaining agent. The optimal ratio was be determined. The hydroxyapatite fibers with strontium were added into the CPC. The mechanical property, cytotoxicity test, SEM morphology, XRD and degradation performance in vitro were characterized, respectively. The results show the CPC had the solidification time of 12min when the ratio as below: β-TCP 55.5%, Ca (H2PO4)2H2O(MCPM)36%, MgHPO43H2O 5%, MgSO41%, Sodium pyrophosphate2.5%. The main components of solidify CPC were hydroxyapatite (HA) and dicalcium phosphate dihydrate (DCPD). The materials had a good Anti-collapsing performance and the degradation rate up to 16.72% after 9 weeks. The mechanical property of composite materials which combined with hydroxyapatite fibers with strontium has been improved, and the cell proliferation rate is also higher than common CPC. This study shows a potentially effective method to improve the mechanical property and the biological activity of calcium phosphate cement.
Unmodified Goldnanoparticles Used as Probes for Detection of Coralyne with poly(A40)
Authors: Han Meng Shu , Hu Ji Wei , Luo Jin
Published: September 2013

Coralyne is a kind of protoberberine alkaloids with strong anticancer activity in animal models, which could induce single-stranded adenine rich nucleic acids (poly (dA)) to form a duplex structure. And poly (dA) could be absorbed on the surface of gold nanoparticles (AuNPs) to enhance the stability against NaCl induced aggregation. However, coralyne induced poly (dA) to form double-stranded DNA, which then left the AuNPs resulting in the arrgregation by NaCl. This paper investigated the conditions and effects of using poly (A40) as a probe for the coralyne detection. The detection of coralyne used 100 mM HEPES and 200 mM NaCl as the buffer solution. The poly (A40) was 250 nM in the experiment for the protection of AuNPs aggregation caused by buffer solution. UV-visible spectroscopy was employed to detect the colorimetric changes in the aggregated condition of AuNPs. From blank to 1000 nM of coralyne, a linear response was obtained with R2 = 0.862. The limit of detection was 100 nM. Results showed that the detection of coralyne with poly (A40) was achievable by using unmodified AuNPs.
Effect of Annealing Treatment on Structure and Electrochemical Properties of LaNi4.5Co0.25Al0.25 Alloy with Low Co Content
Authors: Wang Feng , Zhou Huai Ying , Wang Jiang , Wang Zhong Min , Zhang Huai Gang , Deng Jian Qiu , Yao Qing Rong
Published: September 2013

The effect of annealing treatment on the structure and electrochemical properties of LaNi4.5Co0.25Al0.25 alloy was studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical measurement. XRD results show that the matrix phases are still LaNi5 (hexagonal CaCu5 type structure) but the intensity peaks become sharper after heat treatment. Electrochemical experiments at 301 K indicate that annealing treatment can significantly improve the discharge capacity and cyclic stability of LaNi4.5Co0.25Al0.25 alloy at suitable treatment condition. The alloy has the best discharge capacity (324.4 mAg-1) due to its composition homogenization after heat treatment at 1373 K/8 h, while the best capacity retention is about 80.12 % because of lower expansion rate and better anti-pulverization ability after heat treatment at 1273 K/8 h.
Experimental Study on Compression Mechanical Properties of Aluminum Foams with Passive Confined Pressure
Authors: Li Cheng Bing , Chen Jing You
Published: September 2013

Abstract: Quasi-static and dynamic compression of open-cell and close-cell aluminum foams were investigated by MTS-809 material testing machine and Split Hopkinson Pressure Bar under the free state and passive confined pressure conditions. Experimental results indicate that the passive confined pressure has an important impact on quasi-static and dynamic compression mechanical properties of open-cell and close-cell aluminum foams. The enhancement effect of the passive confined pressure on close-cell aluminum foams is stronger than the impact on open-cell aluminum foams. The quasi-static and dynamic compression processes of aluminum foams consist of elastic stage, yield platform stage and compacting stage. The open-cell and close-cell aluminum foams investigated have strain rate sensitivity characteristics.
Surface-Enhanced Raman Scattering Determination of Trace Phenanthroline Using Aggregated-Nanosilver as Substrate
Authors: Hu Mao Hui , Liang Ai Hui
Published: September 2013

Using PEG10000 and sodium citrate as stabilizer, sodium borohydride as reducing agent, a stable nanosilver sol had been prepared. In pH 6.0 Na2HPO4- NaH2PO4buffer solution and in the presence of NaCl, a stable nanosilver aggregates were formed. Phenanthroline (Phen) adsorbed on the aggregated-nanosilver surfaces resulting in a surface-enhanced Raman scattering (SERS) peak at 1450 cm-1observed, and the SERS intensity was enhanced with the concentration of Phen was between 1.25×10-10mol/L and 2.5×10-9mol/L. Based on these, a new sensitive SERS method has been proposed for the determination of trace Phen in the synthesis of samples, with satisfactory results.
Synthesis and Resistive Switching Characteristics of Ethyl Methacrylate /N, N'-4, 4'-Diphenylmethane-Bismaleimide Copolymer
Authors: He Yu Ru , Dai Pei Bang , Xu Ji Wen , Lu Yue Qun , Wang Hua
Published: September 2013

The Ethyl Methacrylate (EMA)/N, N-4, 4-Diphenylmethane-bismaleimide (BMI) copolymer was synthesized by the conventional free radical polymerization. The resulting copolymer was fully characterized by FTIR, TG, DSC and the film exhibited excellent film-forming property, high thermal and dimensional stability. The devices based on EMA/ BMI copolymer possess a sandwich structure comprising bottom indiumtin oxide (ITO) electrode and top Ag electrode. The as-fabricated device exhibits the nonvolatile rewritable flash type memory characteristics. The ITO/(EMA/BMI copolymer)/Ag memory device also demonstrates ON/OFF-current ratio of about 1 × 102 and lower switching threshold voltage of about 0.98V.
Study on Chemical Engineering with Evaluation of Efficiency of Safety Resources Invested in Chemical Enterprises Based on Accounting Information
Authors: Li En Zhu , Xu Hong Shan , Liao Jia Ming
Published: September 2013

In chemical engineering, large amount of mostly dangerous substances, as raw materials or intermediates, will be used with harsh and hazardous conditions of chemical reaction. so there are many unsafe factors with the whole chemical engineering. Safety is a prerequisite for chemical production of the chemical engineering, large quantities of safety resources should be invested into the chemical engineering for preventing accidents. By this paper, the requirement of introducing the system of evaluation of efficiency, based on data of accounting, used for such safety resources, is discussed systematically. The features of the recommended evaluation system are also demonstrated. This method of evaluation of efficiency may be used in all units of chemical enterprises with possible accidents in chemical engineering and for estimating and reflecting the inefficiency of the resources invested in preventing accidents. On the basis of the functions of this evaluation system, the main framework of Data Envelopment Analysis (DEA) for the system of evaluating efficiency is also suggested, which is accordant to features of data of accounting in chemical enterprises. The purpose of this research is to help effective management of safety resources.
Synthesis and Properties of a Novel Unsymmetrical Diarylethene with a Benzothiophene and a Thiazole Group
Authors: Jia Hong Jing , Pu Shou Zhi , Fan Cong Bin
Published: September 2013

A new unsymmetrical photochromic diarylethene1o, which is named 1-(2-methyl-benzothiophene)-2-(2,4-dimethyl-5-thiazoly) perfluorocyclopentene, was synthesized. In the meantime, its photochromic, kinetics and fluorescence properties were investigated in detail. The result indicated that this diarylethene had good thermal stability and exhibited reversible photochromism, changing the color from colorless to orange in hexane solution upon appropriate irradiation with 297 nm UV light, respectively. What is more, the kinetic experiments illustrated that the cyclization/cycloreversion process of this compound was determined to be the zeroth/first reaction. The fluorescence intensity of diarylethene decreased dramatically along with the photochromism from open-ring isomer to closed-ring isomer upon irradiation with UV light in hexane solution. In addition, the results demonstrated that the unsymmetrical diarylethene compound1o, which we have synthesized, had attractive properties for potential application in optical storage.
Photochromism and Fluorescent Switch Material of a Novel Diarylethene Bearing Phenanthrene Unit
Authors: Li Xue , Li Hui , Fan Cong Bin , Cui Shi Qiang
Published: September 2013

A novel photochromic diarylethene, 1-(2,5-dimethyl-thienyl)-2-[2-methyl-5-(10-phen-anthrenyl)-3-thienyPerfluorocyclopentene was designed and synthesized, and its photochromic and fluorescent properties were also investigated in detail. The compound exhibited remarkable photochromism, changing from colorless to violet after irradiation with UV light both in solution and in PMMA film. The fluorescence intensity declined remarkably, when irradiation with UV light. Using this diarylethene1oas optical storage was performed successfully.
Synthesis, Photochromic Properties of a Hybrid Diarylethene Material with a Benzene Unit
Authors: Ren Pan Pan , Wang Ren Jie , Pu Shou Zhi
Published: September 2013

A new photochromic diarylethene compound [1-(2-methyl-5-phenyl-3-thienyl)-2-(2-methyl-5-1,3-dioxolane-3-thienyl)] perfluorocyclopentene 1o was synthesized and its photochromic properties and fluorescence switch were investigated in detail. Upon irradiated UV light it changes from colorless to purple in solution and PMMA amorphous film, respectively. Finally, the diarylethene 1o was exhibited remarkable fluorescence switch properties along with the cyclization reactions. When the concentration arrived at 5 × 10-5 mol L-1, the fluorescence peak had the maximum.
Synthesizes and Properties of a Novel Unsymmetrical Photochromic Diarylethene Material
Authors: Sun Zhi Yuan , Li Hui , Pu Shou Zhi
Published: September 2013

A new unsymmetrical photochromic diarylethene, 1-(2,4-dimethoxy-5-pyrimidinyl)- 2-(2-methyl-5-pyridine-3-thienyl) perfluoroncyclopentene (1a) was synthesized and its photochemical and fluorescent properties were inverstigated. The measurement results demonstrated that the compound had good photochromism in hexane solution upon irradiation with 297 nm UV light. And the cyclization process of the compound were determined to be the zeroth order reaction by UV-Vis spectra. Besides, the open-ring isomer of the diarylethene exhibited relatively stronger fluorescence at 406 nm when excited at 289 nm in hexane solution.
Synthesizes and Properties of a New Unsymmetrical Diarylethene with a Naphthalene Moiety
Authors: Wei Sha Sha , Wang Ren Jie , Liu Gang
Published: September 2013

An unsymmetrical diarylethene with a naphthalene moiety was synthesized. The naphthalene was connected directly to the central perfluorocyclopentene ring as an aryl moiety and available to participate in photoisomerization reaction. This compound exhibited reversible photochromism, changing from colorless to SandyBrown after irradiation with UV light both in solution and in poly-methyl methacrylate (PMMA) amorphous film. Also, it exhibited remarkable fluorescence switching in the solid state. The electron-withdrawing substituents evidently enhanced the some propeties of diarylethenes with a naphthalene moiety. All results indicated that the naphthalene played an important role during the process of photochromic reaction for the diarylethene derivatives.
The Study on Curing Kinetics of Lignin Based Epoxy Resin System Using Non-Isothermal DSC Method
Authors: Chen Ming Qiang , Liu Shao Min , Li Feng , Yang Zhong Lian , Zhang Ye
Published: September 2013

The synthesis of Lignin Base Epoxy Resin was based on industrial alkali lignin, and lignin-based epoxy resin curing characteristics were analyzed using the thermal weight loss technology under the oxygen atmosphere conditions. In light of the infra-red analysis of raw materials, the curing reaction kinetic parameters of lignin-based epoxy resin system were calculated using the Kissinger-Crane and Flynn-Wall-Ozawa method, and the curing reaction kinetics model of lignin-based epoxy resin system was established. The results showed that the kinetic parameters obtained using two methods were approximate, which validated that the curing reaction was consistent with the principle of the first-order reaction model. Initial curing temperature Ti0=454.88 K, curing temperature Tp0=507.55 K, and terminal temperature Tf0=598.77 K of lignin-based epoxy resin system were obtained when the extrapolation method was applied.
Resonance Rayleigh Scattering Spectral Determination of As(V) Using Cu(II) as Catalyst
Authors: Wen Gui Qing , Liang Ai Hui
Published: September 2013

In HCl medium and in the presence of CuSO4, Na3AsO4can be reduced by NaH2PO2to form As nanoparticles (AsNs) which exhibited a strong resonance Rayleigh scattering (RRS) peak at 370 nm. Under the chosen conditions, the increased intensity at 370 nm was linear to As5+concentration in the range of 0.48-38.0×10-6mol/L, with a regression equation of ΔI370nm= 82.3CAs+ 33.9, a correlation coefficient of 0.9878 and a detection limit of 2.0×10-7mol/L As5+. The proposed method was applied to detect As5+concentration in waste water, with simplicity, rapidity and accuracy. Thus, a novel RRS spectral method was established to determine As5+.
One-Step Preparation of Monodisperse Vinyl Hybrid Nanosilica Hydrosol
Authors: Xu Li Hui , Cai Zai Sheng , Shen Yong , Wang Li Ming , Ding Ying , Zou Rui
Published: September 2013

The successful one-step preparation method of vinyl hybrid nanosilica (V-SiO2) hydrosols was studied. TheV-SiO2hydrosols were prepared via water-based sol-gel reaction with vinyl trimethoxy silane (VTMS) as the precursors under alkaline condition in the presence of composite surfactant. The formation mechanism of V-SiO2nanoparticles was explained. The size of V-SiO2nanoparticles could be adjusted by controlling the concentration of the composite surfactant and catalyst. Fourier transform infrared (FT-IR), transmission electron microscopy (TEM), Zetasizer Nano ZS Particle Size Analyzer were used to characterize V-SiO2nanoparticles. The obtained V-SiO2hydrosols are more convenient for preparation of polymer/SiO2nanocomposite.
Environment Analysis with Temperature Change in Jarud in Recent 59 Years
Authors: Chun Hua , Alateng Tu Ya
Published: September 2013

By means of the linear trend analysis and accumulated variance analysis, the climate change characteristics of temperature from 1953 to 2011 in Jarud Banner were analyzed. The results showed that temperature of annual and seasonal in Jarud has risen in recent 59 years; especially in spring. The decadal variation of annual mean temperature went down greatly since1950s, and began to increase since in the late 1980s, while it showed most obvious trend since 21stcentury. The cold phase was from 1953 to 1986 and warm phase from 1987 to 2011.
Catalytic Wet Peroxide Oxidation of Epoxy Resin Wastewater for Reusing
Authors: Hong Fang , Cao Guo Min , Shuai Xiao Dan , Sheng Mei
Published: September 2013

To remove the organic compounds from epoxy resin wastewater which contains high concentration sodium chloride, a catalytic wet peroxide oxidation (CWPO) process was applied to treat it. The effect of different reaction conditions on total organic carbon (TOC) removal efficiency was evaluated, and the experimental results showed that the optimal H2O2 dosage, Fe2+ dosage, temperature, and pH were 0.735 M, 0.027 M, 90oC and 3.0, respectively. Multiple additive methods of H2O2 and Fe2+ significantly enhanced TOC removal than the one step addition. The TOC value of treated wastewater was lower than its limit for diaphragm electrolytic cell feed, thus it could be recycled to a chloro-alkali process for reusing.
The Study of Groundwater Environment Pollution Risk Assessment in Lead Zinc Ore
Authors: Li Yun Zhen , Yao Yuan , Peng Dao Ping , Ye Hong
Published: September 2013

Recently, the groundwater heavy metal pollution is becoming more and more serious with the development of economy of China. In order to analyze the effect of lead zinc ore has on groundwater of the Southwest Mining District, after considering characteristics of heavy metal pollution, groundwater anti-fouling ability of natural selection, aquifer intrinsic vulnerability and drinking water source protection area, the groundwater environmental effect of a lead zinc ore is assessed and discussed.
Studies on Solid Solution of Fe50-Cu50 Compounds by Mechanical Alloying
Authors: He Zhan Wen
Published: September 2013

This paper discusses Fe50Cu50 composite powder mechanical alloying of morphology and solution condition, through to the mechanical alloying Fe50Cu50 after composite powder on scanning electron microscopy and distribution analysis has determined its morphology and Fe -Cu the solution conditions. The experimental results show that the ball mill 50 h, Fe50Cu50 composite powder particle size basically stable, size in a few microns or so, and Fe and Cu has fully fuses in together to form the uniform solid solution.
The Establishment of Dynamic and Integrated Environmental Risk Control System for Residential Projects
Authors: Jin Chang Hong
Published: September 2013

The paper divides environmental risk control modes of residential projects into four types: static and non-integrated mode, static and integrated mode, dynamic and non-integrated mode, and dynamic and integrated mode. The paper elicits that the dynamic and integrated environmental risk control mode for residential projects is better than other three kinds of modes by comparing four kinds of dissimilarity modes of environmental risk control system. The Dynamic and Integrated Environmental Risk Control System (DIERCS) for residential projects is established.
Experimental Research on Vacuum Diffusion Bonding of AS-Extruded AZ61 Magnesium Alloy
Authors: Lin Fei , Li Jie , Zhao Hong Wei , Chen Zhi Tong , Meng Qing Sen
Published: September 2013

Vacuum diffusion bonding of as-extruded AZ61 magnesium alloy was investigated according to atomic diffusion theory. The effects of the diffusion temperature and holding time on the quality of the bonding joint are investigated by means of microstructure analysis, shearing strength test and microhardness testing. The shearing test results showed that the maximum shearing strength reached 51.95MPa with the temperature of 470°C and the holding time of 90min. And the diffusion temperature and holding time have a great effect on the quality of the bonding joints. The microhardness measurement results showed that the microhardness value at the bonding joint was maximum.
Spatial Analysis for Groundwater Pollution Based on Monitoring Data by COMGIS
Authors: Jing Ping
Published: September 2013

Groundwater pollution is an important issue in recent years, in order to know how the spatial pollutant situation is, the visualization analysis is adopted to analyse the regional pollution with monitoring data. Monitoring data can be easily acquired, which is the basis for spatial analysis, with the GIS software, the vector layer of monitoring data can be established, and environmental pollution monitoring data can be dynamically managed by point vector layer. On the development platform VB.NET, taking geographic information system components (COMGIS) to design and develop software to come true the spatial analysis function, with the design techniques, various space interpolation methods can be loaded to realize the spatial analysis, such as IDW, Krige, Spline, Trend. These methods can be used to acquire the data of unknown pollutant region by loading the monitoring data layer. With the spatial interpolation method, visual spatial analysis function for groundwater pollution can be realized easily with monitoring data.
Catalytic Reaction-Nanogold Resonance Rayleigh Scattering Method for Thedetermination of Trace Tellurium
Authors: Ye Ling Ling , Liang Ai Hui
Published: September 2013

In pH 4.2 HAc-NaAc buffer solution, hydroxylamine hydrochloride reduced Cu2+to Cu+that coordinate the nitrogen atom of 1,2,3-benzotriazole (BTA) to form Cu-BTA complex particles with a resonance Rayleigh scattering (RRS) peak at 369 nm. Under the selected conditions, when the BTA concentration increased, the RRS intensity at 369 nm increased. The increased RRS intensity ΔI369nmwas linear to BTA concentration in the range of 0.17-13.36 μg/mL, with a regression equation of ΔI369nm= 89.91C + 96.7, and the detection limit is 0.17 μg/mL. Accordingly, a new RRS method for BTA was established.
The Sustainable Development of Ecological Environment from the Perspective of Ecological Ethics
Authors: Zhang Chen Chen , Hu Zhi Yuan
Published: September 2013

As the growth of environmental problems, the ecological environment protection is becoming more of a concern of the countries all over the world. At present, the ecological environment sustainable development problems have already become the important content of China's socialist modernization construction. In this paper, we would clarify ecological ethics value orientation and scan the basic characteristics of environmental policy in China from the perspective of ecological ethics. On this basis, from the perspective of ecological ethics, we would put forward to the countermeasures and realization way for the sustainable development of ecological environment of our country.
Flue-Gas Desulfurization Technology and its Equipment
Authors: Hao Hui Di , Zhai Tian , Zhang Yong Fang , Lei Jian Yong , Cheng Tian Qi , Zhu Na
Published: September 2013

The peak of power consumption will be brought by the rapid development of the industry. Thermal power is still the main component of electric energy at present. More and more attention has been paid on the atmospheric pollution caused by the thermal power plant in our country. The sulfur dioxide (SO2), one of the thermal power plant flue gases, is dangerous to the environment and human. Effective SO2 control technology can not only reduce the environmental pollution but also the sulfur can be recovered in order to conserve resources.
Study on the Antibiotic Bacterial Residue for the Human Health Risk Assessment
Authors: Meng Xian Lin , Miao Yang , Zhu Ying , Wang Xiao Рong
Published: September 2013

As antibiotic bacteria residue contains many toxic substances such as antibiotic residues, heavy metals and polycyclic aromatic hydrocarbons, it was listed as hazardous waste by government. This paper used Analytic Hierarchy Process to set up the evaluating index system and made a quantitative evaluation of those risk factors in the disposal process. It could be concluded that antibiotic bacteria residue and its metabolites were the major environmental risk factors. Furthermore, this paper took the waste of tetracycline for an example, and divided the disposal technologies into two categories (disposal rate of 0% and over 90%) and then made the human health risk assessment according to the procedure of EPA.. As a result, the risk values were lower than the acceptable lever, which showing that the risk of the tetracycline bacterial residue was very small for humanity.
Study on the Measure of Reducing Noise and Vibration of Over-Track Buildings Induced by Crane Load
Authors: Zhou Hua Jie
Published: September 2013

Big vibration will be cause by train load and crane load in the over-track buildings, and then generate structure-borne moise in the buildings, which will affect the live quality of the people lived in the buildings greatly. Focusing on this proble, three finite element method is established based on a practical engineering. The measures of reducing noise and vibration is proposed according the characteristics of the building, which is to replace the steel column as concrete column. The dynamic responses of the building under the two cases are calculated and analyzed. The computation results show that the measurement can reduced structure vibration significantly, and accordingly, the structure-borne noise is also reduced greatly. The research results in the paper have strong engineering practicability and can provide some references for some other projections in China in future.
The Research about Biological Materials and Exercise-Induced Articular Cartilage Injury
Authors: Shen Zhi Juan , Zhao Qiao , Zhang Yong
Published: September 2013

The composite scaffold has well biocompatibility and biodegradability, and it is assembled by a certain fraction ratio and mode, which is a biodegradable stent and gains many applications at present time in cartilage tissue engineering. The composite scaffold has good biocompatibility, toughness, porosity and mechanical strength. The preparation of composite scaffold is not only about the composite of biological materials with the same kind, but also about the different materials. Due to the composite scaffold, the biological materials have the complementarity, and meet the needs of ideal biomaterial scaffolds to some extent, which has positive implications on the repair of articular cartilage in exercise training.
Reinforced Concrete Frame - Shear Wall Structure, Floor Open Hole Static Finite Element Analysis
Authors: Qin Kai , Ma Fu
Published: September 2013

along with the diversification of architectural image and the construction of complicated functions, there are more and more irregular buildings. Floor open hole especially floor open hole is the typical representative of irregular buildings. Floor open hole lead to floor in-plane rigidity weakening that open hole level stiffness drop form weak layer, the structure of the center of mass and centroid offset weak layer is larger, so in the earthquake under the action of stress is more complicated. Large-scale finite element software ANSYS is applied in this article simplified single documents across the floor in the middle of the hole structure is simulated and analyzed under the static load of open hole plate, beam and column structure deformation and stress distribution, and will not open holes in the floor and open hole in the floor slab under the action of horizontal static stress were analyzed.
Adding Layer of Steel Structure of Safety Testing and Add Layer and Reinforcement of Feasibility Analysis
Authors: Ma Wen Tao , Wang Jian Qiang , Chai Ya Li
Published: September 2013

Along with our country economy fast development, the building and renovation is becoming more and more widely, layer for steel structure system, relying on its obvious advantages, has gradually become one of hot topics in the study of engineering. Combining with engineering example, through the integrity research, bearing capacity calculation, field exploration, the analysis of the concrete strength testing, etc., has carried on the appraisal on the safety of building structure, and analyses the feasibility of after add layer. In layer for steel structure design, at the same time puts forward the design and construction of some key points, provide a reference for similar projects.
Analysis of Transformation Layer in Frame Supported Shear Wall
Authors: Qu Guo Hong , Zhang Yong Sheng
Published: September 2013

Based on design analysis of frame supported shear wall structure in practical engineering project and its internal force and deformation under earthquake action, the way to improve seismic performance of transformation layer in frame supported shear wall structure is found. Main design points and structural measures of transformation layer in frame supported shear wall structure was discussed which has certain reference value to engineering design personnel.
Performance of Steel Fiber Reinforced Concrete (SFRC) and its Application in Civil Engineering
Authors: Guo Rong
Published: September 2013

Steel fiber reinforced concrete is a new type of composite material developed rapidly in recent years. It is widely used in various types of engineering construction field with its good crack resistance, flexural toughness and impact resistance. Meanwhile, Steel fiber reinforced concrete has high tensile strength and fracture toughness, fatigue resistance, and forming pouring easy，for variety of complex stress position of the structure. This paper provides something for this new concrete materials in the project of the building structure design and construction, through the introduction of the main performance of steel fiber reinforced concrete.
The Hanging Point of the Spatial Grid Structure High Strength Bolt Fatigue Notch Effect Analysis
Authors: Wang Xiao Long , Luo Hong Tao
Published: September 2013

In recent years, the advantages of light weight steel structure with its widely used in long-span space truss structure industrial workshop. Unlike traditional bridge crane, space truss structure plant can use suspension crane, so the dynamic load of fatigue problem worthy of further study[. The fatigue of the space truss structure including: structure component fatigue, tired of hanging lifting point. At present, the fatigue test is the most reliable research method. This article uses the ANSYS software for welding the hollow ball nodes [2] hanging points of high strength bolts in finite element simulation analysis, observation under the effect of unilateral axial tensile force, the stress distribution of high strength bolt, and calculate the stress concentration factor in thread.
The Static Finite Element Analysis of the same Bar under the Different Welding Tubular Rectangle-Joints
Authors: Luo Hong Tao , Li Yu
Published: September 2013

In this article, through to the railway station of taiyuan a housing cover used in the welding space Rectangular tubular joints this engineering example, By using a large finite element software ANSYS to analyze the node, through the entity modeling, and use the given design load to theoretical analysis, two kinds of nodes to discuss security and rationality of these two kinds of nodes, the two nodes is obtained under different arrangement in chord combination, each member under the elastic phase and the maximum load value, provide certain data for subsequent node test support. Key words: Rectangular tubular joints, Node, Finite element, Maximum load
The Vertical Bearing Capacity Analysis of Screw Pile in Clay
Authors: Cui Yu , Wu Jun Qiang
Published: September 2013

Recently,ocean energy, especially wind energy, gains attention from all over the world.In offshore engineering , the design and construction of foundation are key factors. As a new type of piles, screw pile has advantages of compressive capacity and uplift capacity.Therefore, screw pile is a good choice for offshore engineering foundation. In this paper , ABAQUS software analysed vertical bearing capacity of screw pile and steel pile with same diameter in clay .And the analysis result shows : the compressive resistance and uplift resistance of screw pile are 1104KN and 974.3KN, the same capacity of steel pile are only 332.3KN and 189.7KN.
The Research on the Influence of the Forms of Foundation on the Behavior of Adjacent Excavation Based on Building Materials
Authors: Ji Qing Xiang , Ge Xin Sheng
Published: September 2013

Foundation pit excavation could be affected to some extent by surrounding different kinds of building materials, building structure, foundation form and load distribution, especially in intensive buildings. In this paper, based on the large-scale finite element software ANSYS, a three-dimensional finite element model is established to analyze the consequences of these complex and uncertain factors faced with by deep excavation projects and the conclusions of the excavation affected by different foundations form of adjacent buildings are arrived at.
Service Life Checking Calculation of Marine Reinforced Concrete Structures Based on Monte Carlo Method
Authors: Dong Gui Hong , Fan Zhi Hong , Xiong Jian Bo
Published: September 2013

Checking some apparent chloride diffusion coefficient of concrete in the marine environment meets the requirements of design life based on Monte Carlo method. Through the project investigations, laboratory test data, statistical analysis and to determine random distribution model of the critical chloride concentration, the surface chloride concentration ,using computer program simulation 5000 random groups critical chloride concentration, surface chloride concentration into the life value calculation model, And obtain the derived distribution of the concrete structures service life, in order to determine Compliance with the design life of concrete structures. For the concrete durability design and service life checking provide the effective analysis under the marine environment.
Construction of Nano Coenzyme and Enzyme Multilayer Film on Gold Electrode by Self-Assembly Method
Authors: He Kun Yun , Wang Xing Sheng , Zheng Hai Tao , Suye Shin Ichiro
Published: September 2013

A ferrocene labeled high molecular weight coenzyme derivative (PEI-Fc-NAD) was prepared by attaching both ferrocene (Fc) and coenzyme (nicotinamide adenine dinucleotide, NAD+) to the backbone of poly (ethylenimine) (PEI). A NAD-dependent glucose-6-phosphate dehydrogenase (G6PDH) was used with PEI-Fc-NAD to fabricate a multilayer film on gold electrode by layer-by-layer self-assembly method. The G6PDH/PEI-Fc-NAD multilayer film was characterized by atom force microscope and electrochemical experiment, which proved that a nanostructure thin film was immobilized by the LBL technique. The modified electrode showed the current response to glucose-6-phosphate in the absence of free coenzyme, and kept about 85% response after storage in buffer for 2 month.
The Strategy of Shape Setup Model and the Obtaining of Several Key Parameters in Hot Strip Mill Process
Authors: Peng Kai Xiang , Zhong Hao , Zhao Liang
Published: September 2013

Shape setup model (SSM) plays a critical role to achieve satisfactory precision of strip shape in hot strip mill process (HSMP). In this paper, the process of SSM is introduced, taking 1700mm HSMP line in Ansteel as the research object. Special attention is focused on the gap crown model, which is the foundation of SSM. And the allocation strategy of reference values for mechanical actuators is presented. Then an off-line simulation method is proposed to obtain several key parameters of the model. SSM has been put into practical use and proved to be effective to control strip flatness and profile by high accuracy.
Study on the Influence of Downward Continuation on Matching Suitability in Underwater Geomagnetic Navigation
Authors: Wang Peng , Hu Xiao Ping , Wu Mei Ping , Mu Hua , Yuan Hai Ping
Published: September 2013

Geomagnetic matching is to utilize the geomagnetic field for positioning, and the matching suitability of candidate matching areas (CMAs) is a key factor of affecting matching precision. In underwater geomagnetic navigation, the underwater geomagnetic map is usually obtained by downward continuation, and therefore the influence of downward continuation on matching suitability is studied in this article. Firstly, the downward continuation algorithm is briefly introduced. Then the comparison analysis of matching suitability before and after downward continuation is made from an experimental point of view. Results show that the CMAs that own excellent matching suitability can still keep the well matching suitability, and moreover, for the CMAs whose matching suitability is normal or bad, the matching suitability may be improved after downward continuation. The conclusions of this article may provide helpful lessons for matching suitability analysis in underwater geomagnetic navigation.
Effects of Electrode Size and Position on the Force-Frequency Characteristic of Integrated Resonator
Authors: Lan Bai Yang , Tian Wen Jie , Zhao Qing Jiang , Wang Zhi Liang , Lv Yi Su
Published: September 2013

Analyzing stress distribution of the thin circular quartz wafer subjected the radial force through the ANSYS finite element simulation, as well as the theoretical simulation, this paper designed two integrated quartz resonators with different structures and carried on experiments on force-frequency characteristic of resonators. The experimental results show that the resonators force-frequency characteristic is not only closely related to adding force azimuth, but also the electrode size and position. And when force azimuths are same, integrated resonator with asymmetric structure has better force-frequency characteristic, its force-frequency conversion coefficient could achieve 551.8Hz/N after electrode was evaporated with Au.
Effects of Insolation on Optical Properties of Tricot Invisible Curtain
Authors: Chen Wei Lai , Yi Ding Hong , Wan Lin Yan , Li Hui Fang
Published: September 2013

In order to analyze the optical properties of different dyeing invisible curtain after long time insolation in xenon arc lamp which stimulated realistic sunlight conditions. Four different light color dyeing (yellow,blue,purple,and peach )Tricot Invisible Curtains were selected. The color and the optical properties,including the light transmittance and reflectance of the technical face and back side of samples in the ultraviolet and visible band, were tested and analyzed.The results showed that the color of all samples had different degree of fading after insolation, the anti-ultraviolet and transmittance properties were improved. The light-admitting and privacy-keeping functions of samples can keep stable after long time insolation and yellow sample keep the best performance of anti-peep properties.