bluuebunny/crossref_metadata_2025 huggingface dataset:
A Method of Quay Crane Scheduling For Container Terminals
Authors: Zhao Ning , Mi Wei Jian , Bao Xue
Published: June 2012

This paper discusses the problem of allocating and scheduling quay cranes (QCs). The problem is decomposed into two sub problems. One is QCs-allocation problem, the other is QCs-scheduling problem. The objective is to find an optimal QCs-to-tasks matching and the QCs’ work sequence so as to ensure the synchronous among QCs and then maximizes container terminal’s throughput ultimately. And then for solving the QCs-scheduling model, a novel search methodology based on heuristic rule-modules with different priority is studied. Through experiments the decision-making system for QCs allocating and scheduling is proved efficient and applied.
A Research on Simplifying Packaging Design
Authors: Huang Hai Yan
Published: June 2012

Since the problems of environmental pollution and natural resource consumption have become worse, Packaging Industry should take its responsibility of protecting the environment. This article discussed about some serious problems caused by over packaging and made a research on some methodologies on reducing packaging. Among the 3R1D principles, the most important one is “Reduce”. Simplifying packaging could not only both directly save natural resources and reduce environmental pollution but also has a resounding ripple effect across the entire production phase. Through this way, the author tried to find some new solutions to minimize human’s impact to the environment.
Parameter Simulation Platform for Series Traction Mechanism of Heavy Machinery Based on ANSYS
Authors: Zhang Guo Zhi , Zhao Ting
Published: June 2012

Based on ANSYS software, second development language of ANSYS software (APDL, UIDL), the simulation scheme of series traction mechanism of heavy machinery was proposed. Based on this scheme, its simulation platform was developed, which includes parameter computing module, parameter optimization module and reliability analysis module. with this simulation platform, its parameter optimization and reliability analysis can be done. The study in the paper provides the simulation platform to predict its performance.
Analysis of Products by Conventional and Microwave Induced Pyrolysis for Low Rank Coal
Authors: Song Yong Hui , Shi Jun Wei , Fu Jian Ping , Lan Xin Zhe , Zhang Qiu Li , Zhou Jun
Published: June 2012

This paper describes the products characteristic derived from the conventional pyrolysis (CP) and microwave-assisted pyrolysis (MWP) of low metamorphic coal. GC/MS were used to analyze the volatile fractions of tar obtained by pyrolysis at different temperature and microwave power. It was found that microwave treatment produces more gas and oil than conventional pyrolysis at 800w and 800°C. In addition, the gas from the microwave has much higher syngas (H2+ CO) contents (up to 55 vol. %) than those obtained by conventional hydrolysis (up to 42 vol. %). The tar from the microwave is mainly composed of aromatic pyrolysis and phenolic compounds, and the content is 47.398% and 13.831% respectively as the microwave power is 800w. Meanwhile, the tar component content of C5-C10from microwave pyrolysis is up to 5 fold than conventional pyrolysis. By contrast, the microwave-assisted pyrolysis is beneficial to the tar conversion to light fraction.
Desulfurization of Simulated Coking Benzene on Modified Activated Clay
Authors: Pan Chun Guang , Ma Hong Zhu
Published: June 2012

Two catalysts, SO42-/activated clay (SAC) and SO42-/Fe2O3 activated clay (SFAC) were obtained by activated clay with or without Fe2O3 loading then treated with H2SO4. The acidity of the catalysts were measured by temperature-programmed desorption of ammonia (NH3-TPD), and the results confirm that the SFAC catalyst has higher acid strength than SAC catalyst. Other techniques such as X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), and energy dispersive X-ray spectroscopy (EDXS) were also employed to characterize the structure of catalysts. Its catalytic properties in desulfurization reaction from the simulated coking benzene by alkylation method was also investigated under mild conditions (353 K and atmospheric pressure), the thiophene removal efficiency can reach 42% for SAC catalyst and 99% for SFAC catalyst, respectively.
A Novel Technology Study of Separation Silicon from a High Silicon Bauxite by Direct Flotation
Authors: Jiang Ya Xiong , Xie Hai Yun , Huang Li Juan , He Shu Ming
Published: June 2012

Abundant of bauxite in China couldn’t be used to process alumina with Bayer process due to it is contain the high silicon. Many of low-grade bauxite have not been fully utilized, and caused many waste of resources. So the bauxite flotation to desilicication of low-grade bauxite will have a very important significance for China's aluminum industry. This paper reports an innovative development: the separation of silicon from bauxite with two stages by the stage grinding and stage flotation via the direct flotation, and obtained the high quality bauxite concentrate, the flotation index is favorable. The raw ore contains Al2O3 60.78%, SiO2 20.84%, the Al2O3 to SiO2 mass ratio (A/S) is 2.92, the main gangue minerals are kaolinite, quartz, pyrophyllites etc. Through the first flotation by the coarse grinding and separation a part of the silicon, then the rough concentrate for the secondary flotation after the regrinding and separation other part of the silicon, obtained the qualified concentrate. The rough concentrate via the five times clean flotation after regrinding. The closed-circuit test obtained the indexes with the concentrate contains Al2O3 70.23%, SiO2 8.65%, the A/S is 8.12, the recovery of Al2O3 is 72.49%. This process can reduce the pollution of gangue minerals to bauxite at the condition of fine grinding, prevent over crush of bauxite, and reduce the impact of experiment of flotation by slime.
Anti-Depression Effect of Sulphuric Acid on the Flotation of Ilmenite
Authors: Xu Bing Liang , Liu Dian Wen , Xu Guo Yin
Published: June 2012

SYB2# (a category of hydroxamic acid) was employed as the collector of ilmenite flotation. Sodium carboxymethyl cellulose was employed as the depressor of gangue, and sulphuric acid as the pH adjustor of flotation. The effect of pH values on the recovery of ilmenite and gangue was investigated on the condition with (or without) depression respectively. The results demonstrate that pH value does not have any obvious effect on the recovery of ilmenite or gangue when no depressor is added. On the contrary, the pH value plays an important role in ilmenite flotation when depressor is added. To be specific, the recovery of ilmenite increases obviously with pH value decreasing. Having a comparison among the recoveries of ilmenite with different pH values adjusted by sulphuric acid, hydrochloric acid and nitrating acid, it is concluded that sulphuric acid produces anti-depression effect on ilmenite depressed by sodium carboxymethyl cellulose.
Atomization of Floatation Reagents Using Pneumatic Injection Technology
Authors: Zhang Xiu Mei , Ma Rui Xin , Wu Da Wei
Published: June 2012

Based on the study of normal emulsion process of floatation reagents, the idea which uses Pneumatic injection to spray the floatation reagents is proposed. The paper introduced the structure and the performance of the Pneumatic injection atomizer. More than 24% of the dosages were saved. Pneumatic injection atomizer offers simple structure and low energy consumption, which is 0.388kw/h.It was proved by the diameter results obtained by the laser particle size analyzer that Pneumatic injection atomizer offers good dispersing effect. When the air pressure is 0.08MPa, the average diameter of droplet is 7.89µm.
Banana Screening Method and Simulation of Banana Screening Process Using Discrete Element Method
Authors: Dong Hai Lin , Liu Chu Sheng , Zhao Yue Min , Zhao La La
Published: June 2012

This paper presented the fundamentals of banana screening method and the structural features of the banana screen. Based on soft-dry ball contact model, banana screening process was simulated by using 3D discrete element method. The results show that the material bed on banana screen possesses a characteristic of thin and constant thickness along the screen plate. The particles velocity on the screen deck shows a decreasing distribution along the screen deck length and the decrease of velocity changes from steep at the feed end to flat at the discharge end. The instantaneous efficiency of banana screen can reach to above 0.95 and the efficiency of steady state is about 0.83. Numerical simulation results can provide references for insight understanding of the banana screening mechanism and optimization of banana screen.
Wave Equation Simulation by Finite-Element Method with Perfectly Matched Layer
Authors: Guo Hong Wei , Wang Shang Xu , Guo Nai Chuan , Chen Wei
Published: June 2012

In numerical simulation, the treatment of boundary conditions is of great significance. In this paper, we have deduced the one order governing equations of the acoustic wave finite-element method with perfectly matched layer (PML) for the first time. The one order equations are easier to realize than the two order form and have a good absorption effect. Then, we have analyzed the absorption effect of the absorbing boundary conditions (ABCs) and the PML. Finally, we get some useful conclusions.
Capsaicin Injectable In-Situ Forming Gels
Authors: Phaechamud Thawatchai , Tuntarawongsa Sarun
Published: June 2012

Capsaicin exhibits the analgesic and anti-inflammatory activities, therefore it is interesting to apply this natural active compound for periodontitis treatment by local drug delivery system such as intra-canal route. Capsaicin in-situ forming gels were prepared in this research work. The viscosity, gel forming property and capsaicin release were evaluated. 30%W/W eudragit RS 30D in N-methylpyrrolidone (NMP) employed as gel base was physicaly stable after sterilization with autoclaving and exhibited the in-situ forming gel property. This gel base was still clear when capsaicin was less than 0.0094 %w/w. When the system contacted with phosphate buffer pH 6.8 the turbid gel was appeared rapidly at the interface. Viscosity of system depended on the amount of eudragit RS 30D. The rheology of systems was newtonian flow and amount of capsaicin tincture did not affect the rheological behavior. The release rate and amount of capsaicin release form gels were lower than those of capsaicin solution. The sustainable release of capsaicin could be obtained from the developed in-situ forming gel.
Characteristics of Compression Wood Tracheid of Loblolly Pine Induced by Artificial Inclination
Authors: Liu Ya Mei , Liu Sheng Quan , Zhou Liang , Qian Liang Cun
Published: June 2012

Three-year-old seedlings of loblolly pine (Pinus taede L.) were selected as materials in this article. The seedlings were planted in spring and divided into five groups, then were artificially inclined at the angles of 0°, 15°, 30°, 45° and 60° from the vertical. The characteristics of compression wood tracheid were observed and recorded, and their variation patterns were analyzed. The following conclusions were drawn: 1) with the increase of the inclined angle, the wall thickness of tracheid increased and the outline of the tracheid became round, the intertracheidular spaces were obvious and increased gradually in all sections derived from the inclined seedlings. The typical characteristics of compression wood were obvious when the inclined angle was bigger than 30°; 2) with the increase of the inclined angle, the tracheid length decreased firstly and then fluctuated, the minimum value reached at 30°; the tracheid width decreased firstly and then increased, the minimum value reached at 45°; the double wall thickness increased firstly and then decreased, the maximum value reached at 45°. 3) In the seedlings studied, the critical angle of inclination was about 30° or 45° from the vertical.
Effect of Rare Earth on the Inclusions and Pitting Resistance of Duplex Stainless Steel
Authors: Liu Xiao , Wang Long Mei
Published: June 2012

The anodic polarization curves of 2205 duplex stainless steel with various RE contents in 3.5% NaCl neutral solutions have been measured by electrochemical methods, The effect of rare earth on pitting corrosion resistance of 2205 duplex stainless steel has been studied by the metallographic examination. The results show that RE can effectively depress pitting corrosion, while the irregular inclusions of Al2O3, sulfide in the shape of clump are transformed into tiny dispersive round or oval RE inclusions, and it plays a good role in pitting resistance.
Synthesis, Structure and Photoluminescence of a Potential Luminescent Material of Mn(II) Coordination Polymer
Authors: Zhang Xiu Ling , Cheng Kai , Song Yu Lan
Published: June 2012

A new coordination polymer [Mn3(IP)(4,4'-obb)3]n (1) (4,4'-obb = 4,4'-Oxybisbenzoic acid, IP = 1H-imidazo[4,5-f][1,10]-phenanthroline) was synthesized and characterized by IR, elemental analysis and X-ray diffraction. Single-crystal X-ray analyses revealed that the compound demonstrates 1D structure in which the Mn2+ centers are connected via 4,4'-obb anions into 1D chain, the chains are further connected via hydrogen - bonding and π ••• π interactions. In addition, the photoluminescence for compound 1 is also investigated in the solid state at room temperature.
The Microstructure of Joint Brazed by Semisolid Stirring Brazing at High Welding Speed
Authors: Xu Hui Bin , Zeng You Liang , Dou Biao , Zhang Cheng Jian , Ding Xiao Ya
Published: June 2012

The effect of high welding speed on the macro-appearance and microstructure of joints were investigated in this paper. Experimental results are shown that bonding at one side of joint interface is obviously better than that at another side of bond interface. When welding speed is up to 72mm/min, a discontinuous joining interface is found. It is indicated that increasing of welding speed will be not in favor of disruption of oxide film on surface of composites.
Design and Fabrication of Thermocapillary Micro Bubble Pump
Authors: Leu Tzong Shyng , Liu Yan Hao
Published: June 2012

In this paper, a novel MEMS-fabricated thermal bubble pump is proposed. By using thermocapillary effect in a microchannel loop, bubbles are designed to move only in one direction of the loop. Driving heater with a square-wave signal, bubble nucleates and grows asymmetrically above the heater. As soon as the heating pulse is turned off, an interesting phenomenon is found. Instead of bubble collapse, bubble moves toward growing direction. Continuous bubbles grow and move periodically when square-wave pulsing signals are applied. Thermocapillary pumping phenomena are achieved successfully in the experiments. By adjusting background temperature field, thermocapillary pumping phenomena can be sustained. Detailed mechanism for pumping force will be discussed in this paper.
Timoshenko Beam Model for Buckling of Nanowires with High-Order Surface Stresses Effects
Authors: Chiu Min Sen , Chen Tung Yang
Published: June 2012

High-order surface effects can have a significant effect in the mechanical behavior of micro- and nano-sized materials and structures. In the literature the mathematical framework of surface/interface stresses are generally described by generalized Young-Laplace equations based on membrane theory. A refined model of surface stress, counting into surface stresses as well as surface moments, collectively referred to as high-order surface stress, was recently derived by the authors. This framework allows us to simulate the interface between two neighboring media which may have varying in-plane stress through the thickness of the thin membrane. To illustrate surface stress effects, we consider the critical force of axial buckling of nanowires by accounting various degrees of surface stresses. Using the refined Timoshenko beam theory, we incorporate the high-order surface effect in the simulation of axial buckling of nanowires. The results are compared with the solutions based on conventional surface stress model as well as existing experimental data. This study might be helpful to characterize the mechanical properties of nanowires in a wide range of applications.
A Control System Design for Nanoparticle Manufacturing by Using Im-Pinging-Jet Micromixers
Authors: Wu Yan , Lu Jian Gang , Yang Qin Min
Published: June 2012

In this paper, a novel control system is introduced for a micro process system for the manufacturing of nanoparticles. An impinging-jet micromixer is used as the microreactor for mixing two fluid phases. In order to increase the scalability of the manufacturing system, a high speed image acquisition and processing subsystem is utilized to provide real-time visual feedback. Jet slope and shape are calculated automatically to evaluate the outcome of the mixing. A control algorithm consisting of a feedforward and feedback components is then implemented to control the pump’s flowrate to deliver guaranteed performance even with the presence of external disturbance and system uncertainty. Experimental results show the feasibility of the proposed solution.
Process for Manufacturing Multi-Functional Nano-TiO2 Composite Powder
Authors: Wang Bin , Luo Zi Yi , Huang Wen , Li Li , Huang Wan Xia , Du Jian Qiao
Published: June 2012

Composite powder was obtained from nanometer TiO2 combined with honokiol or quercetin. The linking-pattern, UV absorbance and antimicrobial performance were studied in this paper. The results showed that the primary linking-pattern between nano-TiO2 and honokiol or quercetin is mainly in physical adsorption with little in chemical adsorption. The absorbance of the composite powder becomes stronger than the precursor and the range of UV absorbance range to ultraviolet rays extends dextrad. The composite powder is a kind of high grade material for making multi-functional product with its antimicrobial performance and properties of broad-spectrum sunblock.
A Fabrication Study on Diode FED Panel Utilizing Improved Film-Electrode
Authors: Wang Feng Ge , Wang Ting Tai , Li Yu Kui
Published: June 2012

With carbon nanotube as cold cathode, the field emission display based on the improved film-electrode was fabricated. The indium tin oxide film covered on the glass surface was etched to form the film-electrode. For one film-electrode stripe, the left bar electrode and the right bar electrode were formed on the both side of the bottom electrode. The carbon nanotube would be prepared on the bottom electrode surface. The cathode covering layer fabricated with the sintered insulation slurry would cover the left and right bar electrodes. It was confirmed that the emission current could be controlled by the formed electric-field with the improved film-electrode.
Failure Mechanisms Research of CCD Imaging Devices Induced by Pulsed Laser
Authors: Qiua Dong Dong , Li Hong Bin , Ping Heng , Jin Hua Song , Liu Si Liang
Published: June 2012

Aiming at the phenomenon that irreversible bright line and all screen black happens in the CCDs irradiated by pulsed laser, the resistance between driving electrodes and substrate was measured, damage micro-morphology of different layers in the facular area was observed, exported waveforms were detected, the damage mechanisms for CCD were analyzed in detail. The coming results show that high power pulse laser induced the ablation at different layers of CCD, increased the dark current and leakage current, which induced the failure of the device.
Analysis for the Reflection of Objects in the Water Based on MATLAB
Authors: Sheng Hong , Li Fang Ju , Liu Yong Qin
Published: June 2012

The relationship between the length of the objects reflections on the water surface and the following factors including the spacing of objects and people，height of objects，observers’ height and the size of wave are discussed. According to the law of light reflection, a parametric equation is established among them. Secondly, the numerical solutions of the equation can obtained by MATLAB and draw the virtual image of the material point in the water. Besides, the objects reflection on the water surface with slight wave was simulated. Finally, a detailed qualitatively analysis for the relevant factors which affect the length of reflection are made and explains the physical phenomenon successfully.
All-Solid-State High Beam Quality 1053nm Nd: Glass Amplifier at Repetition Frequency
Authors: Tang Xiong Xin , Fan Zhong Wei , Qiu Ji Si , Yu Jin , Hou Li Qun
Published: June 2012

A laser amplifier of LD pumping Nd: glass with a high beam quality and stability, which amplifies nanosecond laser pulse, has been developed in this paper. The device adopts the major technology of “LD pumping multi pass amplification together”. Beam transmission is designed with the technology of “inhibition of diffraction effect, active control and spatial filtering”.
A Two-Dimensional Photonic Crystal Structure for Improving Efficiency of Pbs Quantum Dots Electroluminescence Devices
Authors: Liu Pei , Zhang Xiao Song , Xin Chuan Zhen , Li Meng Zhen , Li Lan
Published: June 2012

In this research, a triangular two-dimensional (2D) photonic crystal (PC) was hypothetically introduced into the active layer of a PbS quantum dots (QDs) electroluminescent (EL) device. The attributes of the photonic band gap effect and diffraction effect were considered and evaluated for device performance improvement. We designed and optimized the 2D-PC structure parameters to enhance the emission intensity at wavelength 1124 nm. The optimal structure parameter of PC is determined by normalized radius of r/a=0.49 and lattice constant of a=540 nm when the thickness of PC slab h is 74 nm. The 3D stimulation view of light propagation validates and supports the proposed strategy. The results provide a theoretical prediction for ideal PbS QDs-based EL device.
All-Fiber 40GHz Femtosecond Pulse Train Source
Authors: Tang Ding Kang , Zhang Jian Guo , Liu Yuan Shan
Published: June 2012

We experimentally demonstrate an all-fiber method to generate a high-quality femtosecond pulse train with a repetition rate of 40GHz. A continuous wavelength laser together with an intensity modulator is used to generate an initial pulse train with a repetition rate of 40GHz. Highly nonlinear fiber (HNLF) together with single mode fiber is utilized to compress the initial pulse from 7.8ps to 985fs. The autocorrelation trace has a good sech 2 profile with no pedestal. This pulse source has a potential to be multiplexed to a higher repetition rate for its narrow pulse width. This method is high-quality, cost-effective and can be easily integrated with the fiber system.
One Test System Design of Static Stiffness for Machine Tools
Authors: Wu Chang Zhong , Sang Shu Guang
Published: June 2012

Computer is regarded as a center of signal detection, data processing and control in this system, accompanied by precision displacement sensors, pressure sensors and stepper motors and drives. Realize the transition of analog to digital with A/D converter board by VB6.0, and load simulation device steady and uniform by stepper motor, at the same time realize the functions of data calculation processing, storage, querying and sample curve drawing. The experimental results shows that the system has the advantages of a high degree of automation, high test efficiency, high precision, high reliability, stability test performance.
Magnetic and Transport Properties of Nanostructured Sr2Fe1-Xcrxmoo6 Double Perovskite Compounds
Authors: Li Xiang Hu , Li Dan , Xiao Dong Wu
Published: June 2012

The compounds of Fe substitution of Cr in nanotructured Sr2Fe1-xCrxMoO6 (0≤x≤0.2) double perovskite have been prepared by sol-gel method. And the x-ray diffraction patterns of the samples show that the samples are in nanometer range. All the samples show a paramagnetic to ferromagnetic transition with temperature, and the Curie temprature increase with the increasing of x. The resistivity of the samples decrease with the increasing of temprature, and increase with the increasing of x.
Based on Quadratic Equations of Tyre Lifting Mechanism before Connecting Rod Combined-Type Modeling Method
Authors: Wu Yao Hua
Published: June 2012

The method of using two equations, a push connecting rod type dump before lifting mechanism of mathematical model, the use of mathematical and mechanical knowledge, establishing geometric equations, establish the statics equation, calculation and analysis, solution binary quadratic equations, get oil cylinder's thrust, and thus for study, so as to further optimized.
Analysis of Bridge Design Based on Three-Dimensional Space
Authors: Suo Weiwei , Wang Fu Ting
Published: June 2012

Considering the effect of non-linearity of geometry and material to the arch bridge, this paper creates the FEM model of the whole bridge, uses the transient analysis method to analyze the seismic behavior of the main bridge of GuCheng Great Bridge independently under the action of Tianjin seismic wave. To give some suggestion on the design of rigid-tied rigid-arch rib CFST arch bridges by studying the seismic behavior of each component on the different positions with the seismic wave of different orientations.
Vertical Shaft Impact Crusher Wear Theory Research
Authors: Zhang Jun Ming
Published: June 2012

Using the impact crusher vertical shaft rotor rotating speed, the vertical shaft impact crusher work the impact of the speed and impact, can improve the crusher of broken ability and production efficiency. The vertical shaft impact crusher the materials in the parts of the impact of the crusher collision effect, can effectively reduce the wear and tear of the machine.
The Design of Measurement and Control System for Condition of Stored Grain
Authors: Chen Zhong Xiao , Jiang Jun Sheng
Published: June 2012

In this paper, ARM7 Microcomputer is designed to realize control of the grain storage environment situation. This control system adopts RS-485 bus to transit data, connecting the temperature module and humidity module with the upper computer. And a detailed description of the design of system function modules and the B / S four layer database application program realization. In this way, the system control computer on the field of grain information real-time monitoring, and through the Web server interface and Internet on the client establish a connection, completed the site condition information of remote measurement and control.
Discussion on Solutions to SSN Based on Ansoft Simulation Analysis
Authors: Li X.P. , Li D. , Liu Y.Q.
Published: June 2012

To analyze the inhibition to SSN, we use the design and emulation tools from Ansoft Co., which are used in the optimization design on PDS, integrated with particular circuit designs. Firstly, the traditional means of adding Decoupling Capacitor is adopted to inspect and verify that increased decoupling capacitors will help to increase high frequency response. Secondly, we introduce a high impedance electromagnetic surface texture, which can be applied to decrease SSN. Lastly, we support that EBG is better than traditional adding decoupling capacitor.
Distribution Network Reconfiguration with Distributed Generation Based on Cloud Genetic Algorithm
Authors: Liu Long Hui , Wang Yan , Yao Shu Jun , Ma Lu Yao , Yang Jing
Published: June 2012

According to the traditional distribution network reconfiguration, the fault feeder with distributed generation (DG) will separate from the distribution network immediately while the network goes wrong. In order to improve the system power supply reliability and the utilization rate of DG, the new standard allows the distribution network change into island operation. This paper establishes the mathematics model of the distribution network reconfiguration with DG, the objective function and constraint conditions. The traditional genetic algorithm (GA) has the shortcomings of premature convergence and slow convergence speed to solve this nonlinear optimization problem. This paper applies the cloud genetic algorithm (CGA) to solve the network reconfiguration problem. The Case study on IEEE33 test system shows that the algorithm is reasonable and effective.
Data Acquisition of BZD Low Burst and Intelligent Protection in the Mine
Authors: Li Chun Guang , Geng Jun Mei
Published: June 2012

To describe the Underground low-pressure explosion-proof switch which has to require rapid processing of multiple frequency signal, the paper analyzes the specific signal and the common algorithms, according to the characteristics of the explosion-proof switch protection device to provide the high-precision, low-cost and high-speed data acquisition methods based on the single chip controller, which is also applied the BZD low burst intelligent protection.
Design and Implementation of Automatic Schematics Verification Platform
Authors: Liu Yong Qin , Li Guo Qiang , Zhu Zhi Ping , Guo Bao Hui
Published: June 2012

Design and implementation of Automatic Schematics Verification Platform based on open EDA (Electronic Design Automation) tools has been discussed. This platform adopts client/server pattern and provides an environment of design Verification and sharing data for designers separately, and at the same time, this platform has strong transplantable ability because of it’s strong cohesion and weak coupling with the open EDA tool, therefore we can transplant this platform to other open EDA tools expediently.
Research on the Technical and Economic Evaluation Model of Energy-Saving Buildings
Authors: Wang Qian Kun , Huang Qian
Published: June 2012

To solve technical and economic evaluation in the design stage of energy-saving buildings, rank the rationality and economic performance of energy-saving technologies under limited condition and provide basis for the amendment and optimization of energy-saving building schemes, technical and economic evaluation model which is according to matrix evaluation method and analytic hierarchy process is put forward and is used in an project to verify its feasibility. This model chooses energy saving rate, renewable energy contribution rate, add capital ratio and payback period of investment as indexes to describe, explain and evaluate the energy-saving technologies. And this model which can truly realize energy saving in the initial design is well adapted.
Study on Storey Dynamic Control of Laser 3D Deposition Process Based on PMAC
Authors: Zhu Ping , Shi Shi Hong , Fu Ge Yan , Zhang Ying Yin , Cai Wei
Published: June 2012

The purpose of this study is to implement the dynamic control of single-storey height by adding hight detection devices based on PMAC in the existing three-dimensional laser processing systems.In order to overcome the rough topography of the forming parts and eliminate the phenomenon of jagged edge,it is important to ensure consistency between single-storey height- h and Z axis single-upgrade- Z.
Study on Short Carbon Fiber Asphalt Concrete Marshall
Authors: Zhao Shu Qing
Published: June 2012

The addition of chopped carbon fiber will effect on the pavement performance of asphalt concrete and reinforce and crack-resistance the concrete. The type, length and mixture of pitch carbon fiber have a significant impact on chopped carbon fiber asphalt concrete. This article discusses the effect of carbon fiber on the Marshall of concrete short asphalt, visits the change of Marshall Index, chooses the best short-cut ratio of concrete with carbon fiber asphalt and asphalt and gives guidance to the design of chopped carbon fiber asphalt concrete and construction.
Design of Brushless DC Motor Control System Based on ARM
Authors: Yang Hong Mei , Yu Xin , Guo Hua , Zhang Xing Lin
Published: June 2012

In order to achieve the precise control of brushless DC motor better, the system utilizes powerful motion control performance and rich on-chip peripheral resources of 32-bit microprocessor LM3S811. combining with Pulse Width Modulation tecnology and Proportion Integration Differentiation closed-loop control algorithm based on feedback, designs a stable and efficient three-phase full-bridge inverter driver circuit and achieves a reliable control system of brushless DC motor based on ARM Cortex-M3 microprocessor platform. Low power and low cost performance will make the system has good market prospects and application value.
Blasting Demolition of a Special Structure Storehouse
Authors: Wang Wei , Zheng De Ming , Feng Hai Yun
Published: June 2012

Describes the successful experience of using explosive demolish a special structure thick-wall storehouse. According to the actual field, the disperse distance of the blasted rocks and the blasting vibration were controlled effectively by blasting scheme, the powder factor, blasting network, air-decking blasting technology and millisecond blasting technology. In addition, the blasting of foundation pit was finished by primary ignition, which guaranteed the satisfactory blasting effect as well as the safety of buildings and facilities near the blasting zone.
Temperature Measurement and Control of Fiber Drawing Furnace Based on Virtual Instrument
Authors: Chen Lei , Wang Zhong Dong
Published: June 2012

The temperature in fiber drawing is one of the key factors influencing fiber’s performance. To the temperature measurement and control problem, the four-wire lead configuration of Pt100 with current excitation was adopted, the signal conditioning circuit includes constant current source, instrumentation amplifier and anti-aliasing filter. The computer collected signals from the conditioning circuit and output control signals by data acquisition card PCI-6221M. The software program was based on LabVIEW, the function relationship between resistance and temperature based on international thermometric scale and the digital filter were applied to calculate temperature. The improved PID control algorithm and the PWM technique were used to realize the temperature control. The experiment results show that the deviation is 0.71°C when the average temperature of the furnace center is 170.25 °C, which satisfies the design requirements.
Study on Surface Infiltration Casting of Low-Carbon Ductile Iron
Authors: Liu Jing Ping , Li Yu Zhong
Published: June 2012

In this essay, the surface microstructure of infiltration casting of low-carbon ductile iron was studied in detail. The results show that the micro hardness from the cast infiltration layer to the matrix zone increased at first and then decreased, the maximum micro hardness was about HV1400, maternal surface hardness are greatly enhanced. Low carbon ductile iron can obtain good surface microstructure by using casting infiltration technology. The hardness of alloy layer on low carbon ductile iron matrix is greatly improved.
Preparation, Characterization, and Photocatalytic Property of N-La Co-Doped TiO2 with Visible Light Response
Authors: Li Gui Hua , Wang An Feng
Published: June 2012

N-La co-doped TiO2 has been synthesized via sol-gel process. The XRD result showed that the structure of N-La co-doped TiO2 was anatase. Their performance of photocatalytic degradation of methylene blue under visible light were investigated. The combined effects of catalyst compsition, calcination temperature, catalyst amount and reaction temperature on catalyst activity were investigated. Experiment results depicted that activeness of catalyst N2.5La0.5/TiO2 calcinated at 500°C for 2h was highest. Using this catalyst, when the catalyst amount was 0.35 g/L, the reaction temperature was 40°C the degradation rate of mehylene blue in 4h could reach 96.5%.
Large Scale Synthesis of Silver Nanowires with High Aspect Ratios by Glucose and Fe3+
Authors: He Xin , Zhang Mei , Yang Su Yu
Published: June 2012

Silver nanowires with lenghths of several hundred micrometers and diameters of 90~150 nm were prepared by glucose and Fe3+ in the presence of poly (vinyl pyrrolidone). The results show that the concentration of poly (vinyl pyrrolidone), Fe3+ and AgNO3 are the vital factors to determine the shape of the final products. The growth kinetics of the as-synthesized silver nanowires with high aspect ratios are also discussed in this work. This silver nanowires are expected to form the network used for excellent conductors or electrodes.
Mix Proportion Design of Acid Pink 3B Fluorescent Magnetic Powder Based on Orthogonal Theory
Authors: Zhang Dong , Zhao Shu Qing , Zhang Kai , Ren Xi Quan , Hou Ying Qi
Published: June 2012

A new method for preparing Acid pink 3B fluorescent magnetic powder was proposed based on theorthogonal theory and currentpreparing experience experiments of fingerprints development. The method contains two steps, first the level of each facor should be determined by the single factor expermint, then the best matrix of Acid pink 3B fluorescent magnetic powder should be selected by the orthogonal design theory.
Analysis and Application of Nano TiO2 Photocatalytic Properties
Authors: Liu Xiao , Cao Ji Hua , Xu Wen Hui
Published: June 2012

Semiconductive nanoscale TiO2 has a Wide range of application, its photocatalysis characteristics and applications have been paid close attention. Nanoscale TiO2 is an efficient photocatalyst, which is always used to decompose pollutant without secondary pollution in environmental domain. The basic properties and main preparation methods of nanoscale TiO2 have been reviewed briefly. The analysis of the photocatalytic mechanism of nanoscale TiO2 as well as its applications in pollution control was reviewed. And some elementary solutions to existing problems in photocatalysis of nanoscale TiO2 have also been put forward.
Study on the Preparation and Characteristics of Calcium Carbonate/Polyvinylidene Fluoride (CaCO3/PVDF) Hybrid Membrane
Authors: Liu Xi , Wang Wei
Published: June 2012

In this paper, calcium carbonate/polyvinylidene fluoride hybrid membrane was prepared through blending method. The effects of contents of CaCO3 and its particle size on structure and property of hybrid membrane were investigated. Experiment results indicated that with increase of CaCO3 content, both membrane’s flux and strength show firstly rising up, and secondly going down. Different sizes of CaCO3 particles also have effect on performances of membranes. So proper content of CaCO3 and its particle sizes were helpful to high membrane flux and strength.
Synthesis of Source Powder for SiC Crystal Growth Using High Purity Silicon and Carbon Powder
Authors: Wang H. , Yan C.F. , Kong H.K. , Chen J.J. , Xin J. , Shi E.W.
Published: June 2012

This work focused on the synthesis of source powder for SiC crystal growth. SiC powder was prepared using high purity silicon and carbon powder. Broad ranges of temperature and Ar pressure were studied on the property of the as-prepared powder. X-ray diffraction (XRD) results show that SiC polytypes were determined by synthesis temperature, while not related to the variation of Ar pressure. The lattice constant of SiC would expand when Ar pressure decreased. Raman results revealed that the variation of Ar pressure would influence SiC crystallization. It was found that the concentrations of free C, free Si and nitrogen all varied with the variation of temperature or Ar pressure.
Write-Once Optical Recording Property of Amorphous WO3 Thin Film and its Relative Mechanism
Authors: Luo Jian Yi , Zhou Yang Yang , Huang Dong , Zeng Qing Guang , Wang Yi
Published: June 2012

Write-once optical recording property of the amorphous WO3 (a-WO3) thin film prepared on the glass substrate by thermal evaporation deposition, has been demonstrated by focusing the laser of 514.5 nm with a variable power to a spot with a size of 1-2μm in diameter on the surface of thin film. The mechanisms responsible for the refractive index change of thin film after the laser recording, has also been studied by monitoring the Raman signal change with the increase of the incident laser power, and by characterizing the micro-structures of the pits induced by laser irradiation. As a result, two mechanisms, the laser-induced phase transition and the laser-induced micro-explosion, are proposed to be responsible for the write-once optical recording.
Frequency Doubling and Polarization Coupling Using Birefringence-Phase-Matching and Quasi-Phase-Matching Simultaneously in Single Optical Superlattice
Authors: Huang Dong , Wang Yu Qing , Luo Jian Yi
Published: June 2012

We proposed a method to simultaneously implement birefringence-phase-matching (BPM) and quasi-phase-matching (QPM) second harmonic generation (SHG) and polarization coupling including six mismatches of wave vectors, in general case, in an optical superlattice (OSL). And the numerical simulations of SHG and polarization coupling in the OSL are carried out. The results indicate that unlike those of SHG processes with only one second harmonic (SH) reported, when one e-polarized fundamental pump is injected into the OSL, another o-polarized fundamental wave, an o-polarized and an e-polarized SHs can be simultaneously generated. The magnitudes of the o-polarized fundamental wave and SHs can be manipulated by an external dc electric field, which is useful when frequency conversion and signal tuning are required simultaneously.
Vibration Fault Diagnosis of Rotating Machine Based on the Principle of Entropy Increase
Authors: Yu Chen , Li Jian Lan , Huang Shu Hong
Published: June 2012

Information fusion is the main method to improve diagnosis accuracy. In this paper, fusion information entropy is defined by fusing speed with three kinds of information entropy that are singular spectrum entropy in time domain, power spectrum entropy in frequency domain and wavelet energy spectrum entropy in time-frequency domain from multiple perspectives to describes vibration fault characteristics. According to the principle of entropy increase, condition information entropy increase of vibration fault are defined and used as new criterion for fault diagnosis, and the grey correlation between sample fault and typical fault is defined to realize the vibration fault diagnosis. Finally, the method’s effectiveness is verified by vibration simulation data from vibration fault simulator. The result shows that this method can identify 6 typical vibration faults correctly.
On the Language Performance of Composite Materials in the Art
Authors: Tian Ya Zhou , Tian Xu Jun
Published: June 2012

The art is inextricably linked with the material and the process. The material is rapidly changing with the advancements of the modern technology, and it changes and refreshes people's views on the art. Many artists have realized that the material is not just a medium of artistic expression, but the language of the art. The modern art, not limited to the only way of presentation through the traditional material, conveys the artist's view of life and the world through the integrated use of materials combined with modern ideas and concepts, which has made the language of the material itself being cultivated and transformed. Hence the works of art are in great vitality through the release of the material's own natural force and creativity.
Coating Postponed-Set Mortar with a Single-Screw Extruder
Authors: Zhang Jian Hui , Xing Xing , Zhong Hua Feng
Published: June 2012

Postponed-set mortar (PSM) is a new type material applied in prestressed concrete components. Successive coating a lay of PSM on prestressed strand is a key to engineering application. On the basis of experimental investigation, the model of PSM screw conveying is built by using the theories of rheology, and the flow for PSM in a single-screw coating machine is studied. The experimental results suggest that the Bingham plastic’s PSM can be conveyed by screw and coated on prestressed strand. It is achieved that PSM and polyethylene sheath is automatically and successively coated on prestressed strand only once by using the machine.
Effects of Reductant Amount and Capping Agent on Tin Nanoparticles Synthesis Using a Tin(II) 2-Ethylhexanoate Precursor
Authors: Chee Sang Soo , Lee Jong Hyun
Published: June 2012

Tin nanoparticles were synthesized through compulsive reduction using a Tin(II) 2-ethylhexanoate precursor, and the effect of reductant (sodium borohydride) amount on the size distribution of the particles was surveyed. Issues caused by the absence of a capping agent (polyvinyl pyrrolidone) were similarly examined. An excessive amount of dissolved sodium borohydride caused variations in the tin nanoparticle sizes, from a few nanometers to several tens of nanometers. The formation of abnormally large particles was attributed to the vigorous coagulation among smaller tin particles. In the tin nanoparticles synthesized without polyvinyl pyrrolidone, an exceptionally wide size distribution was observed owing to irregularly coagulated and aggregated large particles.
Preparation and Photoelectric Properties of High-Directional Al-Doped Zinc Oxide Nanorod Arrays
Authors: Liu Yang Lin , Duan Xue Chen , Liu Shu Yun , Liu Yan Yan
Published: June 2012

ZAO nanorod arrays with high preferential c-axis orientation and excellent photovoltaic performance were prepared in order to apply it extensively. Aluminum- doped zinc oxide thin films were deposited on glass substrates by sol-gel method.And then by controlling processing parameters such as the amount of doped aluminum and stability, etc.well-aligned Al-doped ZnO nanorod arrays with a narrow diameter distribution were successfully grown on substrates by hydrothermal method, where the substrates were spin-coated with seed layer.The experiments show that the 2% aluminum-doped and diameter of about 50nm of ZAO thin film nanorod arrays has the best performance photoluminescence and surfactants can promote the growth of ZAO rod-like nano-structures and contribute to the formation of ZAO nanorod arrays with highly oriented nanorod arrays.
Study on Inverse Ultrasonic Modeling for Complex Type Flaw in Homogeneous Material
Authors: Zheng Gang Feng , Wu Bin , He Cun Fu
Published: June 2012

It is well known that the Born approximation technique is highly effective under weak scattering conditions. In the paper, a cement paste cylindrical specimen with complex flaw is prepared and ultrasonic measurements are carried out by experimental means. The measurement area is restricted in the plane perpendicular to the axis of cylindrical specimen. The measured wave data are fed into the approximate technique formula—the inversion method and cross-sectional image is obtained. We find that good results have been obtained for strong scattering void flaws such as complex flaw in cement paste cylindrical specimen
Preparation and Photocatalytic Properties of Loading Nano-TiO2 Modified PHBV Film by Solution Casting
Authors: Yan Ting , Chen Hai Feng
Published: June 2012

As titanium source tetrebutyl titanate modified by reflux preparation, the clean solution containing the nano-TiO2had been prepared by hydrothermal synthesis method. Then the solution was added to the chloroform solution which containing the poly (hydroxybutyrate-co-valerate) (PHBV), and the loading nano-TiO2modified PHBV film was prepared by solution casting processes. X-ray diffraction (XRD) and UV-visible transmission spectra (UV-vis) were used to characterized; in the photocatalytic experiment, 10 ml 5 mg/L methyl orange solution with the 10 mg catalyst, the fade rate reached 90% after 120 min. The thin film obtained in this method has characteristics of high transmittance, high photocatalytic activity, recycling, non-toxic and the loading nano-TiO2of uniform dispersion.
Research on Discretely Tunable Nd:YAG Ceramic Material
Authors: Li Lei , Zhang Xing Yu , Liu Zhao Jun , Wang Qing Pu , Wan Xue Bin , Cong Zhen Hua , Zhang Yuan Geng , Wang Wei Tao , Wu Zhen Guo
Published: June 2012

A diode-end-pumped ceramic Nd:YAG laser discretely tunable for five wavelengths was demonstrated. The tunability was obtained by a blazing grating in Littrow mode, and the laser was discretely tuned from 1052 nm to 1073 nm. Under the diode pump power of 4.59 W, the average output powers at five wavelengths were all over 1 W. The laser source may find applications in spectroscopy and metrology.