bluuebunny/crossref_metadata_2025 huggingface dataset:
Digital Model Construction by Reverse Engineering Design Based on Geomagic Studio and Pro/E Software
Authors: Ma Chun Yu , Wang Chang , Yuan Jun Ping
Published: June 2013

Processing method of digital model construction by reverse engineering design based on Geomagic Studio and Pro/E software was explained firstly with a typical craft surface as an example, then some key steps such as processing of cloud and processing of surface were explained, some key problems such as method of reference and method of registration were discussed in the end. The example show that construction by reverse engineering design based on Geomagic Studio software and Pro/E software is very effective for digital modeling of some products such as crafts and jewelry because of its high efficiency and perfect surface quality.
Study on a MES-Based Large Blast Furnace Expert System
Authors: Bi Xue Gong , Li Peng , Peng Wei , Zhou Jindong , He Kuangnian , Zhong Shuzhou , Zhong Xiaobing , Liu Kehui
Published: June 2013

Abstract: Manufacture Executing System is superior in information sharing and integrated management, by the combination of the two techniques of MES and ES, an intelligent expert system of Shaogang 3200 m3 blast furnace was established. This system runs stably with higher reliability, and allows to make accurate monitoring and prediction for furnace heat, gas distribution and abnormal furnace conditions, playing a role in guiding operators to run the furnace.
Refined Oil Repository Safety Assessment Studies
Authors: Niu Yong Jie , Guo Ji Kun , Mu Xin , Mu Xiang Jing
Published: June 2013

The purpose of this study is how to evaluate the security problem of refined oil repository. This paper uses gray comprehensive evaluation method to structure mathematic model. At last simulation results show that the method is certain referential significance for the refined oil repository safety assessment.
Satisfaction Measurement of the Automobile Manufacturing Suppliers Based on Fuzzy Comprehensive Evaluation
Authors: Yu Shui
Published: June 2013

With the economic globalization and knowledge economy advent, the enterprises hope achieve a favorable position in the competitive market, and gain more and more attention to long-term strategic cooperative relations with partners. Fully understanding the basis of supplier management theory, the paper developed a set of supplier satisfaction evaluation index system. Combined with the actual situation of the auto parts maker SH, some comments and suggestions related to supplier management are provided for SH. This will help the supplier management and expand the market coverage to the case, and provide additional research areas of supply chain partner satisfaction.
Study on Evacuation Facilities Bottleneck in Xizhimen Station with Simulation
Authors: Zhang Xin , Xu Jie , Guo Jian Yuan , Wang Yang
Published: June 2013

Urban Rail Transit (URT) is more and more popular with citizens. Evacuation capability of stations is concerned with their service levels. When emergencies occur, passengers' safety is threatened. 3-line Xizhimen Station is taken with M/G/c/c theory for an example. By analyzing evacuation capability of stairs and passageways, evacuation bottlenecks are found to improve the service level of Xizhimen subway station.
Study on Low Frequency Load-Shedding of Substitute District
Authors: Ren Guo Wei
Published: June 2013

Based on low frequency load-shedding practice experiments of Xinyang power supply company, work principles as three reports, one examination and a table modification is proposed to improve the management of power grid in substitute district. The methods introduced in the paper is proved to be effective in the practice.
System Availability Test Procedure with Minimum Operating Time
Authors: Fu Kang , Xu Ying , Yang Jun , Zhang Wei
Published: June 2013

In order to solve problem about how to test inherent availability of repairable system under minimum operating time and lognormal repair time, an inherent availability test procedure with fixed sample size is presented. The test procedure which is divided into alternate operating and repair process, should meet stated levels of producer’s risk and consumer’s risk. It is noticeable that minimal sample size and critical value calculation method research is considered as the key point of procedure design. At the end of this paper, course of a test procedure design and operation of inherent availability test and evaluation are described by example analysis.
The Application of BP Neural Network Learning Algorithm Based on the Particle Swarm Optimization
Authors: Sun Zhi Hong , Wang Jun , Xu Bao Ji
Published: June 2013

The development of real estate has been affected by various social factors, including economic factors. BP neural network can more accurately forecast the trend of real estate industry according to economic development indicators. But BP neural network is slow convergence in the training process, and easily falls into local optimum. The BP neural network learning algorithm based on the particle swarm optimization (PSO) optimizes the weights and thresholds of the network by PSO algorithm, then to train BP neural network. The experimental results show that the performance of this new algorithm is better than BP neural network, but also has good convergence.
A Study on the Impact of Virtual Manufacturing on Corporation Management
Authors: Wen Xiao Li
Published: June 2013

Virtual manufacturing has great influnce on the corporation management owing to the rapid development of information and communication technology and fast changing of organization form.This paper introduced the principle of virtual manufacturing, discussed the basic features of virtual manufacturing technology and evolution of virtual enterprise. The article also expounded the impact of virtual manufacturing on corporation management from several important aspects. Lastly, some prospective and suggestiones were given.
Operation Management of Port Logistics in the Global Supply Chain
Authors: Chou Chien Chang , Ding Ji Feng , Chang Tzu Min , Wong Chun Pong , Lin Wen Cheng , Wang Chin Yen , Chang Wen Cheng , Lin Chi Yung , Chang Kur Eng
Published: June 2013

The global supply chain system includes sea, air, and inland transportations. The port logistics plays an important role in the maritime transportation. The aim of this study is to analyze the operation management of the world’s top 20 container ports by using SWOT (Strength, Weakness, Opportunity, and Threat) analysis method. Finally, some conclusions and suggestions are given to the international manufacturers, port managers, and departments of governmental maritime.
Product Form Designing of Mechanical Engineering Based on the Theory of TRIZ
Authors: Tang Li Hua , Liu Wen Jin , Zhang Zong Deng
Published: June 2013

Engineering design of mechanical products is the weak links of products in the international market. The reason for the process of product design, only the attention of the high-tech applications and multi-functional requirements ，Neglected the morphology and function of the form, shape and study the relationship between man-machine. Concern the form of products is a manifestation of caring human nature, but also thinking of the man-machine coordination, engineering design of mechanical products is the form of art and science of organic unity. The use of TRIZ (Theory of inventive Problem solving) theoretical guidance of construction machinery products shape design is a new approach and ideas.
Quality Evaluation Model for Highway General Mechanical and Electrical Product
Authors: Chu Cheng Zan , Zhu Li Wei , Na Ran
Published: June 2013

Highway general mechanical and electrical product quality is one of the important factors for guaranteeing highway efficient and safe operation. Over the past decade, with the rapid development of highway construction and mechanical equipment manufacturing technology, more and more mechanical and electrical products applied in highway. For the objective and scientific evaluation of quality of mechanical and electrical products, highway mechanical and electrical product quality index system and quality evaluation model were researched based on product generic quality evaluation method, and then verified by actual product case.
Research on Formulation and Implementation of Mechanical Equipment Repair Process
Authors: Lin Guo Min , Peng Li Xia
Published: June 2013

The mechanical equipment after failure should be fast repaired with high quality and restoration of its performance indicators. The varieties and selection principles of mechanical equipment repairing technology are studied. The technological process of repair work, the work content,the implementation steps, the implementation methods, the operation skills, the matters needing attention in various aspects are analysed in detail.
Preparation and Microstructure of Two Kinds of Exfoliated Graphite
Authors: Zhao Ji Jin , Li Xiao Xia , Guo Yu Xiang , Sun Tong , Ma Sen
Published: June 2013

Two kinds of exfoliated graphite have been prepared from graphite flake and graphite powder, and their preparation conditions were respectively optimized by orthogonal experiments and parallel experiments. The effect of graphite size on the characteristics of exfoliated graphite was researched. The microstructure of two kinds of exfoliated graphite was measured by SEM. The results show that the optimal preparation conditions for exfoliated graphite flake are as following: the mass-volume ratio of graphite to mixed acid is 1: 4, the volume ratio of nitric acid to phosphoric acid is 1: 2, the mass ratio of graphite to potassium permanganate is 1: 0.1, and the reaction temperature is 25°C. For exfoliated graphite powder, the optimal mass ratio of graphite powder to potassium permanganate is 1: 0.22, and the consumption of oxidant for exfoliated graphite powder is more than that for exfoliated graphite flake. The longitudinal expansion of graphite flake is more apparent than that of graphite powder and leads to a worm-like fluffy rope.
Research on the Process of Conceptual Design for Hoisting Machinery Based on Directed Graph Model
Authors: Li Bi Qiong , Hu Zhi Tao , Liao Ying
Published: June 2013

The schemes generating process of conceptual design is the most crucial part of the process of conceptual design, it is better for understanding the designer's intent process, transferring and accumulating design knowledge with this process, in order to analyze the schemes generating process of conceptual design effectively, this paper takes conceptual design for crane hoisting mechanism for an example, which describes the schemes generating process by using zigzag mapping method and proposes the principle of conceptual design based on directed graph model ,with using metamodeling technology, directed graph model can be applied to prototype system developed by GME, this prototype system provides a simple tools for the process of conceptual design and records the schemes generating process and relevant design knowledge. The zigzag mapping method and GME tools is used in the process of conceptual design for crane hoisting mechanism in this paper, which verifies effectiveness of the zigzag mapping method and GME tools, and has a certain practical value.
The Study of Large Equipments Condition Maintenance Policy Based on Kalman Filtering
Authors: Zhang Shuai , Zhang Jian , Tong Shui Guang , Wu Chao Wei
Published: June 2013

Aimed at the problem that because common proportional hazards model (PHM) cannot fuse new failure data of long-life complex equipment, which features a small-sample, the reliability estimation accuracy will decline, a new condition-based maintenance strategy based on dynamic PHM was proposed. Kalman filtering theory was adopted to fuse in-time new failure data and expand sample size. Extended Kalman filtering method was used to solve the nonlinearity of the observation equation of PHM and then its regression coefficient was online updated, according to which the residual life was estimated and the optimal maintenance decision was made. Finally, the condition monitoring data and historic operation data of a certain kind of wind power gearbox were used to validate this method. The result indicates that this method has good dynamic estimation ability under the condition of small sample with a 20.6% increase in the accuracy of regression coefficient estimation and a 8.7% decrease in optimal preventive maintenance interval estimation error.
Preparation of Core-Shell Silica - 12-Tungstophosphoricacid Nanoparticles for Acylation of Aromatics
Authors: Hsu Hsiu Ling , Selvin Rosilda , Roselin L. Selva
Published: June 2013

A variety of solid acid catalysts especially 12-Tungstophosphoricacid (DTP) supported on silica has been reported for the acylation of anisole, veratrole and toluene. However, the activity of this catalyst is susceptible to coke formation or poor activity. This paper reports the novelties of steam treated SiO2-DTP core-shell nanoparticles, which exhibits tremendous stability, high activity and enhanced selectivity in the liquid-phase acylation of anisole, veratrole and toluene as compared to conventional DTP supported on silica.
Preparation of TEM Specimens from Gas-Atomized Fe-6.5wt.%Si Powders with Several Micrometers Using Focused Ion Beam
Authors: Zhao Shi Chao , Xie Ke , Song Chang Jiang , Zhai Qi Jie
Published: June 2013

Transmission electron microscopy (TEM) can be utilized to identify some specific microstructures of metals and alloys. However, it is very difficult to precisely prepare a TEM specimen from the powder particles with several micrometers. There are more or less drawbacks in conventional preparation method. This paper describes a novel method to prepare specific specimens from the powder particles with several micrometers for TEM study. A TEM specimen approximately 5μm diameter was successfully prepared to electron transparency, which extracted from a 5μm diameter powder particle. The selected-area electron diffraction pattern (SAED) analysis was carried out.
Research of Cr1-xMxN's (M=Al,V,Ti,etc.,x=0.5) Coating Valence Electron Structure Calculation and Wear-Resisting Performance
Authors: Fan Tao Tao , Xiao Wen Kai , Li Liang , Lan Si , Li Xiao Tuo
Published: June 2013

Based on empirical electron theory of solid and molecule (EET, Empirical Electron Theory of Solids and Molecules) ,this paper calculated the Cr1 – xMxN molecular coating’s valence electron structure of the phase space and the valence electron structure of coating matrix phase out of phase interface. By analysing microscopic valence electron structure, we discussed the alloy elements’ influence on this series of coatings’ resistance. And we found that V elements can significantly increase the metal chromium nitride’s were resistance , element Ti takes the second place, element Al also has some effect.
Characterization of Antioxidant Chitosan Film Incorporated with Pomegranate Peel Extract
Authors: Fan Jian , Zhang Zhi Hong , Qin Yu Yue , Zhao Tian Rui , Cheng Chun Sheng
Published: June 2013

A novel antioxidant chitosan film incorporated with pomegranate peel extract (PPE) (0, 1%, 2%, and 3% (w/v)) was developed. The mechanical property, water vapor permeability, total phenolic content and antioxidant activity of the films were investigated. Fourier transform infrared (FTIR) spectra revealed that good interactions occurred between functional groups of chitosan with PPE. The flexibility and water vapor barrier property were improved by incorporation with PPE. Films containing PPE had higher total phenolic content and showed better antioxidant activity. These results suggest that chitosan films incorporated with PPE can be useful for meat preservation.
Researches on the Formation and Thermal Treatment of (Zn0.3Co0.7)2-W Type Ferrite
Authors: Liu Ling , Xiong Zheng , Hu Hui
Published: June 2013

W-type hexagonal ferrite BaZn0.6Co1.4Fe16O27 was prepared by the method of coprecipitation with flux. Various products were prepared by different thermal treatments. The microstructure, element composition, crystal structure, phases and dynamic electromagnetic parameters of the products were analyzed by SEM, EDS, XRD and the microwave vector network analyzer. The formation of the ferrite was studied and the optimal thermal treatment condition was confirmed, under which pure tiny W-type hexagonal ferrite powders were achieved.
Rheology Properties of Ni/TiO2/SDBS EMR Fluids
Authors: Tan Suo Kui , Song Xiao Ping , Zhao Hong , Ji Song , Wu Min , Guo Hong Yan , Zhou Chun Jiang
Published: June 2013

By means of mechanical properties test，the relationship among shear ratio, concentration and electric field, magnetic field, electromagnetic field on the Ni/TiO2/SDBS EMR fluid properties have been analyzed. It had found that with increasing shear ratio，the shear stress of Ni/TiO2/SDBS EMR fluid increased for same composition, but there is a critical value. With increasing concentration，the property of EMR fluid increased for same shear ratio. Coupling electromagnetic field makes the properties improve.
Simulation and Optimization of Steel Casting by Sand Casting
Authors: He Bin Feng
Published: June 2013

Casting defects will always occurred in the cast-steel castings. In order to eliminate the shrinkages more and more risers had been used which increased the final cost sharply. The traditional method was used to the designing process; besides that, the foundry simulation software was introduced to prove the rationality of the technique. The software helps to predict the proper position of the shrinkages. The cooling system was optimized after the analyzed and the final simulation results show the rationality of foundry technique.
Strain-Rate Characteristic of the Brush Plated Nanocrystalline Cu
Authors: Du Feng , Li Jing , Gao Yue De , Han Wen Jun
Published: June 2013

In this study, the pure nanocrystalline Cu columns were fabricated by the brush electrodeposition technique at 20°C and at different deposition current densities in the range of 200 240 mA cm-2. The columns shows high strain rate sensitivity in the room temperature compressive test. In the tested strain rate range, the strength of the nanocrystalline Cu at 2% plastic strain increases from 660 MPa to 1500 MPa. The nanocrystalline Cu exhibits obvious flow softening behavior at high strain level, and the degree of the softening is related to the strain rate.
Study on the Interaction between a Self-Assembling Peptide and Paclitaxe
Authors: Hui Chen , Xing Zhi Hua , Yu Hong Chang , Ruan Li Ping
Published: June 2013

In this work, the interaction between paclitaxel (PTX) and a designed peptide was investigated through AFM, CD and fluorescence spectroscopy. AFM images showed that the morphology of the self-assembling peptide with PTX addition had a remarkable change. Fluorescence data illustrated that PTX enhanced the fluorescence intensity of P1. The binding constants for the interaction between PTX and P1 in 25°Cand 35°Cwere 6.38×105 L/mol and 2.27×104 L/mol respectively. Moreover, thermodynamic analysis implied the main binding force between P1 and PTX was hydrogen bonds and vander Waals forces. CD results indicated that PTX caused an increase of unordered structure. Finally, a molecular modeling was proposed based on the research. The study will provide a reliable proof for designed peptide as a paclitaxel carrier for further research.
Study on the Properties of Functional Cleancool Fiber
Authors: Liu Yan Jun , Wang Di
Published: June 2013

Cleancool fiber is a new type of green functional textile materials that can biodegradation, these years more and more people pay great attention to it for its excellent properties of fast moisture-transmission , fast dry property and permanent anti-bacterial properties. On the basis of experimental examination, the length wise appearance and cross section appearance , the tensile properties, the moisture-absorbency, property ,acid resistance and alkali resistance etc of the cleancool fiber are test and studied. The conclusions gained in this paper have important reference value to the development of cleancool fiber product and its processing.
Analysis of the Wedge Tip Fillet for Central Defeats in the Process of Cross Wedge Rolling 4Cr9Si2 Valve
Authors: Zhao Feng Xian , Liu Jin Ping , Huang Jiang Hua , Hu Zheng Huan
Published: June 2013

Forming process of 4Cr9Si2 martensite refractory steel by cross wedge rolling was simulated by means of rigid-plastic finite elementDEFROM-3D software. From wedge tip angle to analyze the central defeats: The increase of maximum stress and its duration time is resulted from the rise of wedge tip fillet (R); the maximum shear stress and maximum shear strain did not change significantly, but its duration time will enlarge with increasing of wedge tip fillet; these factor will lead to the higher possibility of internal defeats. Rolling experiments are carried out to verify the correctness of the FEM and feasibility of simulation results by the experiment: internal defeats have appeared in the conditions of R=12mm.
T-BN Powders Prepared by Chemical Vapor Deposition Using BCl3, NH3 and Ar
Authors: Yang Ling Wei , Cheng Hai Feng , Li Jun Sheng
Published: June 2013

T-BN powders were successfully prepared by chemical vapor deposition method using BCl3, NH3 and Ar. The as received BN was less crystallized with turbostratic structure. The morphology of the powders was standard circular which is due to the homogeneous nucleation. The chemical composition of the BN powders was B and N, with B-N bonding.Keywords: Boron Nitride; Chemical vapor deposition; Structure
The Coming of Quasicrystal: Discovery, Principle and Application
Authors: Zhang Jian Bin , Yu Dong Mei , Jia Jian Gang
Published: June 2013

According to the arrangement of atoms, the solid materials can be divided into the crystals and the non-crystals. Short for quasi-periodicity crystal, quasicrystal, also known as the "quasi crystal" or "mimetic crystal", is an intermediate between crystals and non-crystals. Three mathematical laws hidden in the quasicrystal are Penrose puzzles, Fibonacci sequence and golden section, and the uniqueness of quasicrystals is five rotational symmetry nonexistent in common crystals. A few quasicrystals (such as Al65Cu20Fe10Mn5, Al75Fe10Pd15) are stable phases, while most of the quasicrystals belong to the metastable products, both of which are formed largely by the method of rapid cooling. Quasicrystal materials have a very high hardness, low coefficient of friction and non-stick characteristic, of which the unique performance is successfully applied in the frying pans, razor blades and surgical tools.
The Influence of Poly Lactic Acid's Crystalline Behavior and the Compatibility by Poly(Ionic Liquid)
Authors: Xu Dong , Zhou Mi , Qian Xin
Published: June 2013

In this paper hexafluorophosphate anionic ionic liquid monomer. Through the ion exchange ([2-(methacryloyloxy) ethy trimethyl ammonium hexafluoro phosphate ionic liquids) ([MATM[PF6]) was prepared. Also through the atom transfer radical polymerization (ATRP), the required poly (ionic liquid) (PIL) was easy to gather and had a very high yield, mixed with polylactic acid in solution and observed on the influence of PLAs crystallinity and compatibility. From differential scanning calorimeter (DSC) analysis results are seen that poly (ionic liquid) concentration in a certain range goes against poly (lactic acid)(PLA) crystallization and reduces the ability of crystallization.
The Mechanical Properties and Hydrophilicity of Poly(L-Lactide)/Laponite Composite Film
Authors: Li Hong Li , Zhou Guo Xian , Shan Yu Kai , Yuan Ming Long
Published: June 2013

Abatract: The poly (L-lactide)/laponite composite films are prepared by the method of solution blending with polylactide (PLA) and laponite. The results show that when laponite content was lower than 0.2 %( mass w/w), laponite can be uniform dispersed in PLA and the composed material had good stability. Fourier transform infrared spectroscopy (FTIR) study demonstrates that PLA was successfully incorporated with laponite by Si-O bond. The mechanical measurement reveals that the tensile strength of PLA/laponite composite film has been increased with compared to pure PLA. The water contact angle (WCA) tests indicate that the hydrophobicity of the laponite modified PLA films can be improved. The present study reveals that the laponite as a complexing agent can improve the mechanical properties and hydrophilicity of PLA.
The Preparation of Lithium Ion Sieve and Determination of its Adsorption Performance Parameters
Authors: Jia Jiu Chen , Chen Li Fang , Qi Yong Xin , Luan Xiao Dong , Wang Hua Wen , Gao Xiao Ye
Published: June 2013

This paper chose LiMn2O4 as ion-sieve. In the ion-sieve precursor pickling experiment, the elution effects of hydrochloride, nitric acid and sulfate were compared and hydrochloride was proved the suitable eluent. By changing the acidity of pickling time, the lithium evacuation rate and the manganese solution loss rate basically achieved balance after pickling for 5 h. The static adsorption experiment suggested that when the pH was 12.5 and adsorption time was 30 h, the equilibrium adsorption capacity was 19.71 mg/g.
The Study and Application on Injection Mold Design of Side Holes Plastic Parts
Authors: Wang Xi Kui , Mei Yi , Wang Xi Chang , Yang Li Quan
Published: June 2013

According to the problem of core-pulling in the injection mold design of side holes plastic parts, analyzed the structural features and forming process of side holes plastics. Introduced the injection mold structure of side holes plastics, the design essentials and working process of the injection mold, then reasonable mold structure and side core-pulling mechanism ware designed. The design of inclined guide pillar core-pulling and combined core mechanism reduced the die cost and made the manufacture convenient.
A New Synthesis Method of Nanomaterial Using Diisopropylamine
Authors: Mei Lin , Wang Jiu , Zhang Ke , Song Shi Yuan , Sun Yu Hong , Shi Yong Gang
Published: June 2013

The technology of synthesis nanomaterial by diisopropylamine as a replaced drying solvent has been studied.The products of Al (OH)3 and SiO2 are found to be amorphous aerogel.The nanoparticle of TiO2 produced by it is found to be smaller than that produced by n-butyl alcohol as a replaced drying Solvent.
Press Forging Forming of the Round-Fin on Heat Sink
Authors: Lin Chong Chao , Wang Ke Sheng , Han Yu , Zhang Li Han
Published: June 2013

Press forging forming is a combined extrusion process for forming round-fin on heat sink on thick metal sheets. A series of simulations on the round-fin forming using the program DEFORM were carried out. The blank thickness and friction coefficient on the formation of round-fin were studied. The results show that the blank thickness is very good for the round-fin formation, and the thicker the blank is, the better the round-fin can be formed; and also when both the punch-blank interface and the die-blank interface have the same value of friction factor, the larger value of friction factor is in favor of round-fin forming, the further investigation reveals that the friction at the punch-blank interface has more significant effect on preventing the initiation of flow-through compared with the friction at the die-blank interface, which implies that the punch-blank interface has more significant effect on the material flow in the formation of round-fin.
A Comparative Research on Sludge Properties under Different Wastewater Quality Conditions
Authors: Li Xue Song , Zhao Meng , Zhang Mei
Published: June 2013

Objective: to explore the wastewater quality conditions which made sludge bulk easily, and the sludge properties when sludge bulking happened. Methods: wastewater was treated by SBR process, and sludge volume index (SVI) in different wastewater quality conditions was determined by controlling water temperature, dissolved oxygen (DO) and pH value. Conclusion: under low temperature conditions, effect of DO concentration on SVI was great; and the lower DO concentration, the more serious sludge bulking. But pH value had less effect on SVI, and only mild filamentous sludge bulking happened on activated sludge at low pH value (pH=6.0-6.5). Moreover, SVI tended to be steady at late period of operation, and the average was 203 mL/g.
Comparison of Antimony Determination Methods in Drinking Water
Authors: Chen Nan , Shi Yong Sheng , Zhao Meng , Xuan Meng Ru
Published: June 2013

Antimony distributes widely in the environment. And antimony pollution in the water environment is becoming serious. How to detect the content of the antimony correctly and effectively is very important. Graphite furnace atomic absorption method is simple, but low sensitivity; hydride generation atomic fluorescence spectrometry, low cost, good reproducibility, but is harmful to the introduction of substances; inductively coupled plasma mass spectrometry for simultaneous multi-element analysis, high sensitivity, but the operation is cumbersome; inductively coupled plasma spectrometry has low detection limit, high accuracy, but the equipment is expensive, and cost of analysis is high.
Copolymer Based on Bromobenzene and 3,4-Ethylenedioxythiophene
Authors: Xu Xiao Qian , Zheng Wen Wei , Tao Yi Jie
Published: June 2013

A novel copolymer based on bromobenzene and 3,4-ethylenedioxythiophene (EDOT) was electrochemically prepared in boron trifluoride diethyl etherate (BFEE) via direct anodic oxidation of the monomer mixtures on indium-tin oxide working electrodes. The corresponding polymer was characterized by cyclic voltammetry and UV-vis spectroscopy. The copolymer had a very well-defined and reversible redox process. The band gap of the copolymer was calculated as 1.42 eV, respectively from the onset of π-π* transition of conjugated backbone. Furthermore, the copolymer exhibited multicolor electrochromism, high redox stability and reasonable response time.
Comprehensive Prediction about Water Abundance of NO.5 Coal Seam Roof’ Sand in Yili NO.1 Coal Mine
Authors: Xie Dao Lei , Wei Jiu Chuan , Yin Hui Yong , Guo Jian Bin , Zhou Song , Gao Min , Li Bing Sheng
Published: June 2013

Collect geological and hydrogeological data of Yili NO.1 coal mine and analyze Hydrogeological Characteristics of sandstone aquifers in the roof of No5 coal seams; predict the water abundance and classify sandstone aquifers’ water abundance with considering the sandstone’s thickness, content and lithology structure index, and provide the basis for controlling the sandstone water of NO.5 coal seam’s roof.
Evaluation of Coal Floor Water Inrush Risk with Five-Figure and Double-Coefficient Method
Authors: Wei Jiu Chuan , Xie Dao Lei , Yin Hui Yong , Guo Jian Bin , Wang Lin Lin , Fu Ping Jie , Qi Fang Kun
Published: June 2013

The coal seam floor water inrush risk assessment is the basis and foundation of inrush water disaster prevention[1-, this paper uses five figure double coefficient method evaluating NO.16 coalseam floor water inrush risk of Xin'an Coal Mine. Contour figure of the destroyed floor protection layer depth, the floor protection layer thickness, the head above seam floor, the effective protection layer thickness, and evaluation figure of mining above aquifer which can guide coal production were drawn to given the security zone within mining area and ensure safe mining.
Design, Materials and Processing for the Summer Olympic Torches
Authors: Zhang Jian Bin , Yu Dong Mei , Yin Xiao Qiang , Jia Jian Gang
Published: June 2013

Olympic torches are the fantastic combination of successful design, appropriate materials and optimum processing which are the basic concept concepts in the major of Materials science and engineering. London Olympic torch was designed to be a three-sided pyramidal in shape, reflecting the features of the Olympic host country and the implication of designers. The material of Olympic torch selected aluminum alloys with a lightweight, high-strength, low thermal conductivity and environmentally friendly recycle; if low weight and high strength are key criteria for the torch, perhaps we can look forward to the incorporation of grapheme in the 2016 Olympic Games torch. The processing of Olympic torch involved laser cutting for 8000 holes and physical vapor deposition for gold-colored titanium nitride film on the surface of the aluminum plates, which embodied the best manufacturing route and the host country's technological capabilities.
Isolation and Identification of a Cellulolytic Bacterium from the Huguang Maar Lake
Authors: Cui Li Hong , Li Ji Hua , Wei Xiao Yi , Han Dong Hui , Zhang Yu Liang
Published: June 2013

In this study, a strain of cellulolytic bacterium named N-6 was isolated from lake Huguang Maar. Phylogenetic analysis based on a partial 16s rDNA sequence showed that the strain was Bacillus cereus. Extracellular cellulase produced by the strain Bacillus.cereus N-6 exhibits optimum activity around pH 8.0 at 50°C and has good pH tolerance in the range of 6-9.
Research on Interval Reversible Inverse Analysis Method Based on Interval Parameters
Authors: Su Jing Bo , Liu Hong Bing , Zhao Hui De , Zhang Dong
Published: June 2013

In this paper, the interval analysis method is introduced and an uncertainty inverse analysis method is presented. The intervals of unknown parameters can be obtained by the input of measured data. Even for few measured data, the analysis results can be also obtained by the inverse analysis method. And the analysis results can be applied to appraise the uncertainty in interval. Based on parameter perturbation, the reversible inverse analysis model is proposed for linear-elastic problems. A numerical example is given to illustrate the validity of the present method. The influence is illustrated about different measured precisions and different numbers of analyzing parameters on the inverse analysis results. And the conditions of existence or convergence of the solution are given.
Stability Analysis about the Impact of Soft Rock to the Underground Cavern Group
Authors: Zhu Yi Huan , Shao Guo Jian , Dong Zhi Gao
Published: June 2013

Soft rock is frequently encountered in underground excavation process. It is difficult to excavate and support in soft rock mass which has low strength, large deformation and needs much time to be out of shape but little time to be self-stabilized. Based on a large underground power station, finite element model analysis was carried out to simulate the excavation process and the results of displacement, stress and plasticity area were compared between supported and unsupported conditions to evaluate the stability of the rock mass.
Edge Detection and Accurate Rectification Technology in the Digital Detection for Dry Cell Substratum Pixel
Authors: Tian Xue Jun , Xie Quan Jun , Ye Feng
Published: June 2013

The development of dry cell production in the world is advancing towards the high-speed and intellectualization direction, the input reduction for production cost by improving the comprehensive performance level and utilizing the advanced equipment has been the urgent demand for development of battery industry. The lagging situation that the detection by naked eye manually is relied to perform the quality assurance for dry cell substratum is broken based on the online high-speed automatic detection technology for pixel digitization of visual image. The principles on battery image processing and feature division as well as the principle on pixel over- fitting and accurate rectification during the process of pixel digitization detection for dry cell substratum are discussed in this paper, and such base and core for battery image processing as edge detection and accurate rectification technology are described.
A HSV Space Shadow Method Based Human Motion Detection
Authors: Dang Hui
Published: June 2013

Human Action Analysis is a fundamental issue that can be applied to different application domains. In this paper, we present a HSV color space based shadow method. The process of the algorithm mainly includes three steps: motional object detection, shadow detection of the object and post-processing. In order to enhance the accuracy of shadow detection, the value of and in the method can be select elaborately. The experiment result indicates the presented algorithm can detect shadow effectively and make full use of the color information.
Determination of the Impurity Element Gallium in the Metallic Aluminum Products such as Aluminum and Aluminum Alloy by ICP-OES
Authors: Cheng Yong , Peng Hui Xian
Published: June 2013

Applying the appropriate ratio of hydrochloric acid and nitric acid mixed solvents, the aluminum and aluminum alloy products were completely digested, and then the digestion solution was diluted with water to a constant volume, and directly using inductively coupled plasma atomic emission spectrometry (ICP-OES) to test Ga and the content of which is from 0.005 to 1.0%. This paper has examined the effect of high aluminum matrix and coexisting elements on the interference of testing micro gallium, and by optimizing the parameters of the instrument detection such as gallium analytical line, detection integration region and synchronization background correction position, etc., effectively eliminated the spectral interferences of coexistence impurity elements. The method have optimized instrument working conditions of the plasma emission spectrometer, and taken matrix matching and synchronization background correction combination of technical measures to eliminate the matrix effect of aluminum products. The method is simple and practical, easy to operate, and avoid the complicated chemical separation and enrichment procedures, with fewer steps, shorter inspection cycle, wide detection range, high precision and accuracy. The results of the method for the determination of the gallium in the aluminum and aluminum products show that: the detection limit of 0.0002%, the background equivalent concentration of 0.00004% and the RSD is less than 2%, the recoveries is from 96.0% to 104.0%.
A New Testing System of Missile-Target Encounter Based on Doppler Fuse
Authors: Wu Guo Dong , Liu Qiang , Xu Yong Jie , Wang Zhi Jun
Published: June 2013

With the purpose of reducing cost, improving the operability, and ensuring the safety, a low-speed testing system of the encounter of fuse and target was carried out. When the system working, the relative velocity of the target and fuse is in control in less than 10m/s, which is a shrink ratio of the real encounter. Experimental investigation shows that the low-speed encountering system can reach the requirements of Doppler radio fuse in the early design, which can help designers design a better fuse.
Analyze the Transient Response of a Control Systems
Authors: Yan Wei , Yang Yong Chun , Guo Xu Feng
Published: June 2013

It is important for the control system analyst to understand the complete relationship of the complex-frequency representation of a linear system, the poles and zeros of its transfer function, and its time-domain response to step and other inputs. In such areas as signal processing and control, many of the analysis and designed collations are done in the complex-frequency plane, where a system model is represented in terms of the poles and zeros of its transfer functions.
Dielectric Properties and Microstrip Patch Antenna Performances of 0.95MgTiO3-0.05CaTiO3 Microwave Ceramics
Authors: Xiong Zhao Xian , Zhang Guo Feng , Xue Hao , Huang Jin Bao , Zheng Qiang , You Bai Qiang
Published: June 2013

τMicrowave dielectric properties of 0.95MgTiO3-0.05CaTiO3 ceramics and their performances as H-shaped microstrip patch antenna were investigated. Best values of dielectric constant (εr) and quality factor (Q×f) of 19.00 and 66800GHz, respectively, were obtained for the microwave ceramics sintered at 1300°C for 3h. A near-zero temperature coefficient of resonant frequency (τf) of -4.7ppm/°C was obtained for the ceramics with sintering 1280°C for 3h. A new kind of H-shaped microstrip patch antenna with two resonant frequencies was fabricated by using of this kind of ceramics as antenna substrate. The return loss bandwidth of the patch antenna was extended with the increasing of substrate thickness at both resonant frequencies of the antennas, around 1.530GHz and 2.750GHz, respectively.
Application of Neural Network Based on the Immune Genetic Algorithm in Failure Diagnosis
Authors: Zhao Li Li
Published: June 2013

This paper designs the multilayer feed-forward neural network based on the immune genetic algorithm to solve the problem that BP algorithm is prone to get the local minimum in the failure diagnosis system. It is of both the learning ability and robustness of the neural network, as well as the strong global random searching ability of the immune genetic algorithm. The simulation results indicate the neural network can fulfill failure diagnosis of the complicated production better.
Cognitive Developmental Grasp Robots: From Infant Development to Computational Modeling
Authors: Li Min Shuo , Yao Ming Hai
Published: June 2013

We addressed the idea that a hybrid of symbolic and sub-symbolic representations is the best method to represent cognition for developmental robots. Basing the learning mechanisms of a cognitive developmental robot on principles of human-like learning, we developed an intelligent grasping robot architecture based on the hierarchical learning. The hybrid of different representations and memory in IGR also gave a new direction for developing robots with high intelligence.
Effect of Chlorogenic Acid on H2O2-Induced Dysfunction and Apoptosis in HUVECs
Authors: Li Ping , Zhao Luo Sha , Feng Yin Man , Yuan Xian Li , Liu Shu Lian , Li Yan Hong , Liu Bai Ge
Published: June 2013

To investigate the protective effects and the possible molecular mechanisms of chlorogenic acid on H2O2-induced dysfunction and apoptosis in human umbilical vein endothelial cells (HUVECs). HUVECs were divided into three groups: H2O2 groups (0, 5, 10, 20, 50mM), chlorogenic acid (100nmol/L) groups and atorvastatin (10μmol/L) groups. The eNOS mRNA expression was measured by RT-PCR. The content of NO in the supernatant was detected by the nitrate reductase assay. Cells activity was evaluated by the MTT assay. The level of reactive oxygen species (ROS) in cells was measured using H2DCF-DA as a fluorescence probe. Results demonstrated that H2O2 caused a significant down-regulation of eNOS mRNA expression and decreased the secretion of NO in a dose-dependent manner compared with the control group. Furthermore, H2O2 induced cell apoptosis, increased ROS accumulation. Nevertheless, these effects of H2O2 could be blocked by chlorogenic acid in chlorogenic acid pretreatment groups. CONCLUSION:chlorogenic acid can inhibite H2O2-induced dysfunction and apoptosis in HUVECs, which may be related to its effects on suppressing oxidative stress, up-regulating eNOS pathway. These results suggest the usefulness of chlorogenic acid particularly in the treatment of cardiovascular disease.
Control and Research of Bionic Robotic Fish Based on Arduino
Authors: Song Tian Lin , Lu Ya Ping , Liu Hai Qing
Published: June 2013

It adopts the Arduino controller and control system of the extension circuit to complete all kinds of motions for the more joints’ bionic robotic fish of the different structures. Adding different kinds of sensors, it can also achieve many functions, such as obstacle avoidance, trace, color discrimination, etc.
Application of Materials Studio Modeling in Crystal Structure
Authors: Fan Xiao Hong , Xu Bin , Xu Yong , Li Jing , Shi Lei , Wang Fu Ming , Lin Jun Pin
Published: June 2013

Modeling of crystal structure in material science curriculum was practiced and applied to keep it simple and understandable by using MS. The unit cells and atomic configurations are produced to show the theory system of geometry description of crystal structure. Many examples, as diamond, graphite, nanomaterial and advanced carbon materials, are employed to describe the main application of MS in material science teaching. According to these atomic modeling configurations, crystal structures exhibit a clearly and understandable appearance for us. So, the meaning of learning and understanding the related parameters of geometry description of crystal structure was explored with the point which helped students to realize and master the abstract concepts of crystal structure.
Design of an Intelligent Point-to-Point Swing Arm Controller
Authors: Wei Wei , Zhao Xiao Ying
Published: June 2013

The point-to-point swing arm test is very important for large arms which have swing arm movement. Traditional point-to-point swing arm controller is relay control mode. The mode has many shortcomings, such as big volume, high power consumption, low stability, and so on. An intelligent point-to-point swing arm controller, using MCU as the control core, was designed for this reason. It was mainly composed of switch signal detecting module, solenoid valve drive module, USB storage interface module and MCU control module. According to the requirements of test, the controller was able to detect the valid signal of limit switch and control commutation operation of solenoid valve, meanwhile it could record the movement time between one point and another point, the time the arm swayed and the moment information, and these above information would be stored in USB memory. It has some advantages of small size, low power consumption, high stability and flexible functions.
Design of Intelligent Cleaning Robot Based on Fischertechnik
Authors: Luo Si Ming , Wu Lin , Deng Sheng Qiang
Published: June 2013

Providing an innovative design of intelligent cleaning robot based on fischertechnik model. The cleaning robot is mainly made up of the hardware structure and software control of walking system, water drawing and waxing system, cleaning system and drag head changing system ,being of autonomous path planning and relative perfect cleaning function. In the hardware structure part, the fischertechnik can make a physical change of the design rapidly. In the software control part, the ROBO Pro modular programming language of the fischertechnik can write control program fastly, without considering the impact of the structure parameters expect for the analysis of mechanical and electrical system controlling problems in the process. Therefore, the design can not only save a lot of experimental time and experimental research funding, but also simplify the research process
Design of Temperature Monitoring System for Solar Laminator Based on ZigBee Technology
Authors: Chen Li Diong , Shi Lei , Ma Shu Ying , Liu Sheng Tao
Published: June 2013

To solve the traditional solar laminator distributed temperature monitoring system wiring problem, a distributed wireless network temperature monitoring system based on ZigBee technology is introduced in this paper. The system sets up a ZigBee wireless monitoring network through a Zigbee-based wireless charge germination processor, CC2430, hardware design and software design process of coordinator node and the sensor node, and we can get temperature monitoring from each sensor node by the network. The method introduced in the paper can make the detection process simple and effective.
Developing and Research on Experiment Device Based on STC90C51 SCM
Authors: Han Jun , Chang Rui Li
Published: June 2013

In the paper, a SCM experiment device is developed by STC90C51 SCM. The modularizing design idea is adopted for the device. It is composed of five-axis stepping driving module, RS485 communicating module, pulse generator module, USB interface module, double-color lattice and driving module, DA/AD conversion module, dynamic digital dishplay module, temperature testing and infrared receiving module, key-press module, I/O expanding module and so on. The experiment device provides a very good experiment platform for the learner of 51 SCM, and may be a developing board used for the development of numerical control system and intelligent mobile robot. It has a good practical value.