bluuebunny/crossref_metadata_2025 huggingface dataset:
Computational Trust in Cloud Manufacturing
Authors: Gao Lu , Liu Quan , Lou Ping
Published: September 2013

Cloud manufacturing is a new kind of advanced service-oriented network manufacturing paradigm. There are two kinds of nodes in this network manufacturing environment: manufacturing service nodes (service providers) encapsulated by manufacturing resources and task nodes (service customers). One of the bases of building up the collaborative relationships between customers and providers in cloud manufacturing environment is their reciprocal trust. However, vicious, mendacious, and inveracious information makes it quite difficult for customers to find reliable and high-quality providers to form virtual manufacturing systems for efficiently responding to market demands in cloud manufacturing environment, viz. service consumers often have insufficient information on service providers. The trustworthy network manufacturing environment is a prerequisite to implementation of cloud manufacturing. In this paper the notion of human trust is extended to the cloud manufacturing. A computational trust model which combines the direct computational reliability and the computational reputation is presented, and the simulating result confirms it valid.
The Design of Smart Alcohol Testing System Based on Internet of Things
Authors: Huang Chun Hua
Published: September 2013

This paper briefly introduces the related concepts of Internet of things (IOT). The applications based IOT is focus on the solution of testing alcohol when drunk driving. The design of smart alcohol testing system based on the IOT is proposed. The topology of the system is given. In the end, it shows deeply Smart Alcohol Testing system is the urgency of industry development wherever from personal, public service and the government needs. It can provide the better services of alcohol testing.
Airline Safety Risk Evaluation Based on Factor Analysis
Authors: Wang Jin Yu , Yu Xiao Huan
Published: September 2013

By using resampling methods this article processed the data of the four existing airlines safety Circumstances into 20 airlines, which are generated randomly and analog ground by using the Matlab software. Based on the data safety evaluation on the safety risk of the real existence four airlines of A, B, C and D are analyzed by using the method of factor analysis from the 20 airlines, and made and evaluated the airline security indicators. It can give the probable cause about airlines to determine their own unsafe facts through the evaluation results, and to find ways to improve.
Analysis of Chinese CNC Machine Tool Industry Based on Patent Intelligence
Authors: Huang Xiao Li , Zheng Jia , Wang Ying
Published: September 2013

Based on patents collected by Derwent Innovation Index (DII) database from 1963-2009, this paper investigates and analysis the innovation status and development trends of Computer Numerical Control (CNC) machine tool technology in China through the quantitative analysis of patent distribution in the year, the hot R&D field and the company of China, Japan, US and Germany in hope of providing an objective statistic reference for future academic researches and innovation development.
Research on the Optimization Path of Regional Tertiary Industry from E-Commerce Perspective - In the Case of Fujian Province
Authors: Lin Zhong Yan
Published: September 2013

Proceeding from the present research of e-commerce and the tertiary industry, setting Fujian Province as an example, conduct econometric analysis and synthesize data report to make research on the promoting role of e-commerce on the tertiary industry of Fujian Province and explore the optimization path of the regional tertiary industry from e-commerce perspective.
Research Progress of Quantum Dot Intermediate Band Solar Cell
Authors: Ma Shu Ying , Shi Lei , Chen Li Dong , Feng Li Zhen
Published: September 2013

The quantum dot intermediate band solar cell is a theoretical concept with the potential for exceeding the conversion efficiency of conventional single-gap solar cells. This paper focuses on summarizing the present status of quantum dot intermediate band solar cell. From the introduction of the concept, it hasnt been realized. Some theoretical proposals and suitable material systems have been investigated to improve the actual conversion efficiency. It seems that there is still a long but bright way to go in this field.
Kinematics Simulation Study on a Manual Operation Sugarcane Loader with Metamorphic Function
Authors: Cai Gan Wei , Gao De Zhong , Shi Hui , Pan Yu Chen
Published: September 2013

Simplify the structure of a new sugarcane loader with metamorphic function, and build a virtual prototype model. Use software MSC.ADAMS for kinematics simulation of the sugarcane loader. Analyze the relationship between input and output of the sugarcane loader during the different working phases.
Numerical Simulation on Aerodynamic Characteristics of Road Vehicles on Bridges under Cross Winds
Authors: Han Y. , Shu S. Q. , Tan D.
Published: September 2013

The aerodynamic force coefficients of road vehicles under wind loads depend on not only the shapes of vehicles but also those of infrastructures, such as a bridge. Therefore, study of the aerodynamic characteristics of road vehicles considering the interaction of aerodynamic forces between the road vehicles and bridge is necessary for predicting the performance of vehicle under wind loads properly. This paper studies aerodynamic characteristics of road vehicles when vehicles run on bridges under cross winds using the CFD method. The dependence of aerodynamic forces on vehicle speeds, the interaction of aerodynamic forces between the vehicles and bridges and the influence of the turbulence are investigated by different simulation cases.
Finite Element Analysis of Tandem Rubber O-Ring Sealing Structure at the End of Shaft
Authors: Hu Cong Fang , Tan Yuan Qiang
Published: September 2013

Based on the tandem sealing structure at the end of the shaft,a finite element model of rubber O-rings has been established and the sealing performance of rubber O-ring has been analyzed. There is an un-uniform compression among these O-rings which lead to the sealing failure. Under different friction factors, several groups of the rubber O-rings have been analyzed, finding that the friction factor is the reason of un-uniform compression. The effect of different average compression rate has been investigated, which has been integrated in the sealing criteria for the tandem O-rings, providing a reference for the optimization of tandem sealing structure at the end of the shaft. According to the sealing criteria for a single O-ring, the sealing criteria for the tandem O-rings is built.
Numerical Simulation of Three-Dimensional Unsteady Flow Field in the Cyclone
Authors: Hao Zong Rui , Xu Juan , Bie Hai Yan , Zhou Zhong Hai
Published: September 2013

Large eddy simulation to describe the turbulent flow of airflow field was used to calculate the unsteady turbulent flow characteristics in the cyclone. It funded that the tangential velocity in the cyclone profile behaved like rankine vortex, with the downward semi-free vortex of the outer layer and the upward forced vortex. With the increasing import gas velocity, the swirling strength of the center increased which reduced collection efficiency by clouding the dust particles in the ash bucket to the center airflow.
Investigation of Three Dimensional Tidal Stream Energy in Surrounding Water Areas of ZTD, China
Authors: Liang Bing Chen , Zhang Tao Tao , Shi Hong Da
Published: September 2013

In the present work, the tidal stream energy in surrounding coastal zones of ZTD is calculated. The tidal current velocity is gotten by three dimensional numerical modeling. The tidal current model is validated by measurement of tidal current observed in 4 points surrounding ZTD. The numerical results given by the tidal current model already shows that: the tidal current velocities given by the model agree with the measured velocities generally. The characteristics of tidal currents around ZTD are analyzed and the following tidal stream energy density is calculated. The maximum tidal stream energy flux of unit width occurs around the middle locations of ZTD southern areas.
Influence of Regulating Seam on Aerodynamic Characteristics of Virtual Wind Tunnel
Authors: Hu Xing Jun , Yue Lei
Published: September 2013

A digital car model was taken as study object, and the influence of the regulating seam to an open type automobile wind tunnel was discussed by comparing simulation results with test data.The results show that the regulating seam changes the flow field around the collector, reduces the size of unsteady flow field and the flow in test section is uniformed better. Thus, the regulating seam shouldn’t be removed when simplifying the wind tunnel model in the simulation. This conclusion will provide theoretical basis and data support for better virtual reproduction and numerical simulation of a wind tunnel.
Simulation and Test for Nonlinear Dynamic Specialty of Rubber Mounting
Authors: Shi Pei Cheng , Sun Yang Min
Published: September 2013

On the basis of a newly-built mechanical model of rubber mounting and nonlinear mathematical model, the dynamic characteristics of rubber mounts were simulated and contrastively tested in frequency domain by using simulation software.Results indicate that the nonlinear simulation model of rubber mounts built in this paper can apply to the research of the low and high frequency vibration of rubber mounts.This model can also be applied to the design of rubber mounting products, which has certain engineering application value.
3D Wave Simulation Basing on VOF Method and Dynamic Grid Technology
Authors: Wang Xu Sheng , Wang Lian Hai , Song Xiu Fu , Ning Bo
Published: September 2013

In order to investigate 3-D situation, the wind and the waves on the interaction on the influence of water object characteristics, this article through to the second development software Fluent, numerical simulation for 3D wave the dynamic process of the wave. First of all a three dimensional two phase numerical pool, the definition made wave plate boundary for movement, according to the characteristics of sine wave launch made wave plate movement rules, and through the user-defined function (UDF) DEFINE_CG_MOTION macro, realize the made the movement of wave plate, analyzes the cycle 2 s stroke 3 m and cycle 6.0 s stroke 0.5 m of sine wave. Second, blowing and horizontal plane Angle 45 ° 2.0 m/s wind, get the jump irregular wave wave process. The results found that reduce the maximum wind trough value, at the same time, improve the big wave peak, adding to the pool of wave, for numerical simulation of 3-d situation seas over deck, leak, prevent oil spill and the foundation animals.
Mathematical Simulation the Influence of Tundish with a Retaining Wall
Authors: Ding Hui , Jin Yan , Yu Hui , Huang Hong Bin , Wang Jun , Ai Fan , Yang Kang
Published: September 2013

Placement in the middle retaining wall package, aimed at controlling the flow of liquid steel forms, so that movement of a reasonable level remained stable, while reducing interference from turbulence and dead zones, molten steel in order to extend the average stay of removal in favor of inclusion to improve the cleanliness of molten steel.In this paper, with the tundish wall flow field of research is the use of mathematical simulation methods, three dimensional mathematical models are currently being used successfully to simulate liquid steel flow and temperature distribution, the large-scale universal Finite Element analyses software ANSYS CFX is used and many models based on different tundishes are built
Technology of Vehicle Multisystem Energy-Harvest Absorber
Authors: Chou Quan , Wong Shuo , Zhang Bin Tao , Wong Ying Qi
Published: September 2013

Since its damping parameter and stiffness factor can be changed based on the road excite input, vehicles can act comfortable and secure. We will focus on methods to solve the energy wastage on active suspension. This article will present sorts of energy-harvest absorb on active suspension to explain the development of this technology. Besides, it will present the multisystem energy-harvest absorber and discusses its advantages and major academic problems.
Mathematical Models for Solid-Solid Phase Transitions Driven by Configurational Forces
Authors: Zhu Pei Cheng
Published: September 2013

Two phase-field models for solid-solid phase transitions driven by configurational forces are reviewed, and the formulation of the models is briefly presented for the non-conserved case, as an example. Applications include martensitic phase transformations in, e.g., shape memory alloys and sintering in ceramic producing. They are compared with two other famous models for phase transitions that are driven by mean curvature.
Magnetic States of Nanoparticles with RKKY Interaction
Authors: Belokon Valery I. , Nefedev Konstantin V. , Kapitan Vitalii Y. , Dyachenko Olga I.
Published: September 2013

Conditions of phase transitions in systems of identical ferromagnetic spherical nanoparticles randomly distributed in metal nonmagnetic matrix and superlattices of small number of nanoparticles with the Ruderman-Kittel-Kasuya-Yosida interaction are researched. In the framework of the Ising model the behavior of superspins is well described with the random interaction field method. The alteration of the effective magnetic moment due to the change in volume affects the choice of the magnetic state of the system: ferromagnetic spin glass or antiferromagnetic spin glass. The ground state of superlattice depends on the distance between particles.
Preparation and Characterization of Magnetic Graphene Oxide
Authors: Shan Yan , Xu Xing Ying , Chen Ke Zheng , Gao Lian
Published: September 2013

In this paper, the magnetic graphene oxide (Fe3O4@GO) has been successfully prepared by decomposition of Iron (III) acetylacetonate in the mixture solution of triethylene glycol and GO. atomic force microscope, TEM, XRD and superconducting quantum interference device were used to characterize the material. The results showed that the magnetic Fe3O4 nanoparticles modified graphene oxide has been obtained, and it has superparamagnetism with magnetization saturation of 16.4emu/g. the Fe3O4@GO has a good sustained-release performance, and vitro cytotoxicity confirmed that its security for Fe3O4@ GO as a potential drug carrier.
Study on the Mechanical Properties of Magnetorheological Elastomers
Authors: Wang Yu Fei , Wang Guo Fei
Published: September 2013

A polyurethane-based magnetorheological elastomer (MR elastomer) was designed, and the magnetorheological effect (MR effect) under shear mode was systematically tested by the designed test set. The results show that the relative MR effect increases with the exterior magnetic filed strength and decreases as the incentive amplitudes increasing. The preload displacement also directly determines the relative MR effect and too large deformation will make the MR effect decreased sharply. But the incentive frequency has no very obviously influence on the relative MR effect.
Water-Swelling Rubber Containing Small Amount of Nanofillers with Enhanced Water Swelling Durability
Authors: Han Wei , Tang You Hong
Published: September 2013

A series of water-swelling rubbers (WSR) were prepared by directly mixing room temperature vulcanization-2 components silicone rubber (RTV-2 SR) with superabsorbent polymer (SAP) and nanofiller (s) (halloysite nanotube or/and CaCO3). The effects of component on its mechanical behaviours and water-absorbent properties such as degree of swelling, swelling ratio, and weight loss ratio were investigated. The equilibrium swelling ratio increased with increasing amounts of water-absorbent resin. Well-dispersed nanofiller (s) increased the mechanical properties of WSR and prevented SAP breaking off from the elastomer network to effectively enhance the water-swelling durability of WSR.
A Review of Ferrates (VI) Oxidation of Organic Compounds
Authors: Song Ya Rui , Ma Jian Wei
Published: September 2013

This review presents the oxidation of organic compounds, X (organosulfur compounds, amines, phenols, alcohols, hydrocarbons, ascorbate, and pharmaceuticals) by ferrate (VI). The rate of reactions of these compounds with ferrate (VI) usually decrease with increase in pH in alkaline media. The reactions of ferrate (VI) with compounds may be characterized most commonly by (i) a 1 e-transfer step from Fe (VI) to Fe (V), followed by a 2 e-transfer to Fe (III) as the reduced product (FeVIFeVFeIII), and (ii) 2 e-transfer steps (FeVIFeIVFeII). Oxygen-atom transfer to the compounds may occur through involvement of either ferrate (VI) in the oxidations carried out by ferrate (VI). Oxidation of biological species by ferrate (VI) is also briefly presented.
Preparation and Characterization of Platinum Nanorods Using Ascorbic Acid as the Reducing Agent
Authors: Yang Ming , Xia Juan Juan
Published: September 2013

Nanorods of platinum with an average length of 500-1000nm have been prepared by a simple reaction between H2PtCl6·6H2O and ascorbic acid in the presence of deionized gelatin at room temperature. Gelatin played a decisive role as an inhibitor of the direct reaction of ascorbic acid with H2PtCl6·6H2O and coagulation of the growing platinum in producing the nanorods. In the absence of gelatin, we can only obtain irregular large platinum particles. The products were characterized by X-ray powder diffraction, scanning electron microscope and X-ray photoelectron spectra.
Structural and Optical Properties of VO2 Thin Films Grown on Sapphire Substrates
Authors: Ma Jian Wei , Song Ya Rui , Xu Gang
Published: September 2013

VO2 thin films with thickness from 100 nm down to 2 nm were prepare on C-plane sapphire (0001) substrates by magnetron sputtering and remarkable thickness-dependent structural and optical properties were found. Below 10 nm the films are nonconductive, and their phase transition temperatures are reduced to be much lower than those of the continuous, thick films. Structural defects are believed to be the main reason for this temperature reduction.
Removal of Hydrophobic Organic Contaminants (HOCs) from Aqueous Solution by Biomimetic Fat Cell (BFC) - The Behavior of Lindane
Authors: Song Li Yan , Yin Ya Jie , Li Dou
Published: September 2013

Based on the bioaccumulation characteristics of fat cell, an innovative agent, biomimetic fat cell (BFC) has been prepared by interfacial polymerization to remove residual hydrophobic organic contaminants (HOCs) from aqueous solution. BFC exhibited efficient lindane removal from aqueous solution, and 95 % lindane was removed by 20 mg/L BFC at 4.6, 9.3, 19.2, 27.6 and 38.2 μg/L initial concentrations. Removal rate experiments indicated that external film diffusion and intra-particle diffusion accounted for removal rate controlling together. Removal equilibrium fit Freudlich model well with high correlation coefficients. The thermodynamic parameters demonstrated that the removal was favored at low temperature and exothermic in nature.
Synthesis of Triethynylborazine-Polyhydromethylsiloxane Copolymers and its Ceramization
Authors: Jiang Ji Feng , Guo Kang Kang , Zhu Ya Ping , Wang Fan , Qi Hui Min
Published: September 2013

Triethynylborazine-polyhydromethylsiloxane copolymers (TEB-PHMSs) were prepared through hydrosilylation reaction between -C≡CH attached to boron and ≡Si-H. The structures of TEB-PHMSs were characterized by Fourier transform Infrared (FT-IR) and Nuclear Magnetic Resonance (NMR) spectroscopy. Their cure behavior were examined by Differential Scanning Calorimeter (DSC) and FT-IR, and then thermostability and ceramization of cured TEB-PHMS were investigated by Thermogravimetric analysis (TGA), pyrolysis-GC-MS, X-ray diffraction (XRD) and Scanning Electron Microscopy (SEM). The results indicated that TEB-PHMSs could be cured and converted into an outstanding thermostable SiBCN ceramics.
A Facile Approach to Synthesis and Modification of Nano-Alumina
Authors: Shen Teng Fei , Sun Ying Juan
Published: September 2013

In this work, nanoAlumina particles (nanoAl2O3) have been synthesized via solid state reaction. Effect of quantity of surfactant on particle size has been investigated. nanoAl2O3 was modified using chloroform as solvent and fatty acid as modifier at room temperature. The advantage of this modification is that it can be proceed at room temperature and it can reduce energy consumption. The products were characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM).
Particles Movement Analysis of Rotary Kiln for Calcination of Selenium Dioxide Based on EDEM
Authors: Xu Ping , Cheng Ming , Li Wei , Zhang Ye
Published: September 2013

Usually, the screw is placed in rotary kiln for calcination of selenium dioxide, so that the materials can be evenly conveyed in the rotary kiln. Through the software of Solid Edge, the geometric model could be established. The materials in the cylinder were regarded as the discrete particles. Then geometric model was imported into the EDEM and the particles movement simulation has been done. Without considering the floating of the screw in the cylinder, linear rotation speed of the cylinder and screw could be set. Through the simulation and analysis, the relative particles movement charts can be obtained. It provides certain reference value to the rotary kiln designing and the research of particles' axial movement in rotary kiln.
Thermogravimetric Analysis of the Reduction of Iron Ore with Hydroxyl Content
Authors: Kawigraha Adji , Soedarsono Johny Wahyuadi , Harjanto Sri , Pramusanto
Published: September 2013

Iron ore with high hydroxyl content such as goethit is widely spread in Indonesia. Such iron ore is not used as feed in ironmaking industry. However due to limitation of primary iron ore reserve such material is an option to substitute the conventional iron ore. Unfortunately the characteristic of iron ore with high hydroxyl content is totally different to conventional iron ore. Such iron ore contains hydroxyl part that can be released at high temperature. This research uses composite pellet which is mixture of iron ore and coal. The iron ore contains goethite which is one of iron phase. The composition of two materials is fixed 1 to 3 molar for iron total to fixed carbon. The mixture is formed a pelet before dried. The small part of dry pellet is analysed using STA with 0.6667 °K/s. The reduction is characterised based on thermogravimetry graphs. The research found that the reduction of iron ore occurs in some stages. First stage correspond to dehydroxylation at around 300 °C and second stage corresponds to reduction of iron ore at around 625 °C and 825 °C or 880 °C. The composite lost of 4.64 % and 2.85 % of weight. The hydroxylation is followed by reduction. Hydroxylation transforms goethite to hematite with lost of water. While the reduction transforms hematite to magnetite and magnetite to Fe.
An Applied Research of Automatic Detection Method for Maturity Degree of Viscose
Authors: Ai Xue Zhong , Gao Yan , Zou Jun Feng
Published: September 2013

This paper focuses on an applied research of automatic detection method for the viscose maturity degree in the chemical fiber production and introduces the hardware structure and software process of this automatic detection device for the maturity degree of viscose. Besides, through rigorous testing, contrasting, and analysis between this device and traditional test methods , the paper also puts forward a better way to improve the precision and result consistency in the process of the viscose maturity degree detection.
Effect of Co-Doping on Iron-Based Oxygen Carrier for CO Oxidation in Chemical Looping Combustion
Authors: Wang Lei , Qin Wu , Xiao Xian Bin , Zheng Zong Ming , Zhang Jun Jiao , Dong Chang Qing , Yang Yong Ping
Published: September 2013

This paper focuses on theoretical research of Co-doped Fe-based oxygen carrier for CO oxidation in chemical-looping combustion (CLC) system. Density functional theory (DFT) calculations were carried out to study of interaction between CO molecules and CoO/Fe2O3cluster, it is found that dissociation of O atom through breaking of Fe-O bonds in the Fe2O3system is the key step for CO oxidation reaction, and Low-fold O atoms in Fe2O3system could more readily dissociate from external surface. Moreover, the presence of CoO in Fe2O3could decrease activation energy and reaction energy of CO/Co-Fe2O3system, hence the reaction between CO and Fe2O3is promoted.
Study on Continuous Separation of High Concentration Cr (III) and Cr (VI) from Strong Acidic Aqueous Solution Using Strong Alkaline Anion Exchange Fiber Column
Authors: Zeng Qing Xuan , Wang Wen Qing , Li Ming Yu
Published: September 2013

The continuous separation of high concentration Cr (III) and Cr (VI) from strong acidic aqueous solution was achieved in column packed with strong alkaline anion exchange fiber (SAAEF). The optimal operation conditions are as follows: flow rate 5.0 BV· h-1 and room temperature. The absorbed Cr (VI) on column could be recycled as Na2Cr2O7 or K2Cr2O7 solution after separation from Cr (III), using saturated NaCl+2.0% NaOH or saturated KCl+2.0% KOH.
14N NQR Study of Urea and Thiourea
Authors: Huang Xue Yi , Xu Geng Guang , Hao Feng Long
Published: September 2013

Nuclear quadrupole resonance (NQR) is a newly developed branch of radio frequency (RF) spectroscopic technique, allowing the detection of many substances containing quadrupole nuclei, such as14N and35Cl, widely existing in explosives and narcotics respectively. In this paper, we focus on the research of its detection mechanism for14N in urea and thiourea. Based on the Density Functional Theory (DFT), employing Beckes three-parameter hybrid functional combined with Lee-Yang-Parr correlation functional (B3LYP), with 6-311++G(d,p) basis set, we have obtained the quantum chemical calculations by using Gaussian 09. Furthermore, experimental results and some discussions related are also presented. At last, we find that the absolute values of relative errors of NQR frequencies are all less than 2%, which indicates that this study is reasonable.
The Deformation and Fracture of Skin under Insertion of Microneedle
Authors: Kong Xiang Qing , Qu Yan Dong
Published: September 2013

Microneedle, as a novel way for transdermal drug delivery, due to its painless and minimally invasive, has recently attracted much attention. The present study investigated skin deformation and failure due to insertion by a single microneedle with nonlinear finite element method. The finite element model considered multilayered, non-linear and hyperelastic properties of the skin, and tissue failure was phenomenologically described by an effective stress failure criterion. The deformation and failure of skin and the force displacement behaviour of the microneedle are discussed. The numerical results show a good agreement with the reported experimental data. The performed study provided novel insights into skin failure due to insertion of microneedle, and provided useful information with which to optimise the microneedle design.
The Vibration and Modal Analysis of the Disc Brake
Authors: Li Fa Zong , Tong Shui Guang
Published: September 2013

The article analyzed the modal of disc brake, the intrinsic characteristics of each disc brake parts were obtained, using modal tests to verify the accuracy of the numerical simulation method; by comparing different vibration mode and natural frequency of the brake parts, predicting the frequency which vibration may occur, aiming at resonance frequency which is easy to occur, improving the structure of the disc brake to improve each order natural frequency, the resonance of the disc brake is effectively reduced, the braking noise was decreased, The study laid a foundation for vibration and noise control of the disc brake.
Preparation and Characterization of CMC-PVA/PVA-SA-MePc (COOH)8/CS-PVA Bipolar Membrane Using Electrospinning Technique
Authors: Zhou Ting Jin , Lu Min , Chen Ri Yao
Published: September 2013

Carboxymethyl cellulose (CMC)-polyvinyl alcohol (PVA) and chitosan (CS)-polyvinyl alcohol were cross-linked by Fe3+and glutaraldehyde respectively to prepare cation exchange layer and anion exchange layer, and polyvinyl alcohol-sodium alginate (SA)-metal octocarboxyphthalocyanine (MePc (COOH)8, a kind of water splitting catalyst, here, Me stands for Fe3+or Co2+) nanofibers were prepared by electrospinning technique and introduced into the interlayer to obtain the CMC-PVA/PVA-SA-MePc (COOH)8/CS-PVA bipolar membrane (BPM). The experimental results showed that compared with the BPM without the PVA-SA-MePc (COOH)8interlayer, the water splitting efficiency at the interlayer of the CMC-PVA/PVA-SA-MePc (COOH)8/ CS-PVA BPM was obviously increased, and its membrane impedance decreased. When the concentration of FePc (COOH)8in the PVA-SA-FePc (COOH)8nanofibers was 3.0%, the trans-membrane voltage drop (IRdrop) of the CMC-PVA/PVA-SA-FePc (COOH)8/CS-PVA BPM was as low as 0.6V at a high current density of 90 mA/cm2.
Rheological Properties of Rice Protein-Dextran Composite System
Authors: Li Xiang Hong , Liu Yong Le , Li Na
Published: September 2013

Rheological properties of rice protein-dextran composite system were studied. The formation of gel network-like structure appeared to have occurred through the interaction of rice protein and dextran at certain biopolymer concentration. An increase in the protein and/or polysaccharide concentration of the mixtures would contribute to the mechanical properties of mixed gels. The differences in fracture forces among samples as noticed in experiments also suggested the difference in microstructures.
The Study of Matching Flotation in Shandong Copper Mine
Authors: Wang Cai Xia , Xiao Qing Fei , Yan Fu Kun , Li Bo
Published: September 2013

With the continuous utilization of resources, the ore characteristics of "poor, fine and complex" emerge continuously, in order to take a comprehensive utilization of resources, it is necessary to match classification. This paper analyzes a copper mine in Shandong province , China, which belongs to the veinlet-disseminated copper ore, with mineral distributes comparison fine, and sulfide ore that is easy to floating content less, this requires the ore should be grinding fine to classification, but not the more fine the better, the sampling experiment studies also confirmed this argument, found that the concentrate recovery of flotation is actually equal to intermediate level rate.
Synthesis of Novel Functional Materials for the Photo-Catalytic Reaction
Authors: Yang Li Li , Yu Lin , Diao Gui Qiang
Published: September 2013

Zeolitic imidazolate frameworks-8(ZIF-8, Zn (MIM) 2, MIM=2-methylimidazole) was synthesized by solvothermal (S) method and liquid-phase diffusion (D) method. ZIF-8 was then directly impregnated with phosphortungstic acid (PTA) at room temperature. After impregnation, the ZIF-8 retained its integrity of frameworks as proved by several characterizations. The textural properties are heavily dependent on preparation methods. Diffusion method produced well-crystallized particles with larger surface area, whereas solvothermal method yielded poorly-crystallized particles. ZIF-8 and ZIF-8-PTA were applied in the photo-degradation of methylene blue (MB) with the assistance of electron acceptor hydrogen peroxide, in which both of them were found to be highly active photo-catalytic. Moreover, the impregnation of PTA improved clearly the activity of catalysts due to the fast reversible multi-electron redox transformations.
Effects of Low-Energy Electron Irradiation on Enhancement-Mode AlGaN/GaN High-Electron-Mobility Transistors
Authors: Chen Chao , Liu Xing Zhao
Published: September 2013

The effects of low energy (1.8 MeV) electron irradiation on enhancement-mode (E-mode) AlGaN/GaN high electron mobility transistors (HEMTs) have been reported. When the dose up to 1.1×1016cm-2, the saturation drain current and maximal transconductance of E-mode AlGaN/GaN HEMTs increase after irradiation. However, almost no change of threshold voltage and gate leakage current is observed. The results are explained by the creation of positive charges in the AlGaN layer by ionizing energy loss, especially the creation of N vacancies and Ga vacancies by non-ionizing energy loss. Moreover, low-energy electron irradiation could recover the electron mobility.
Oxidation Kinetics and Oxide Scale Morphology of Fe-1.5Si Alloy
Authors: Li Fan
Published: September 2013

Thermogravimetric analyzer (TGA) was used to simulate isothermal 60-min oxidation process of Fe-1.5Si alloy under air condition at 700°C-1150°C. Cross-sectional scale morphology and elemental distribution of the oxide layer were investigated by electron probe microanalysis (EPMA). At 700°C-1150°C the oxide scale is composed of external scale and internal Si precipitates zone. And Si-rich oxides can be detected in the inner parts of the outer oxide scale. It was found at 700-1000°C that oxidation mass gain curve obeys the parabolic law but at 1100-1150°C the relationship of mass gain and oxidation time is complex. The parabolic rate constant is lowered at 900-1000°C that should be related with thicker internal oxidation zone at 900°C and formation of the obvious Si-rich layer in external oxide scale at 1000°C.
Electrospun Polycaprolactone Fiber Mats as Carriers for Tannic Acid
Authors: Thitiwongsawet Patcharaporn , Wichapeng Nitiya , Waiyaroj Adjimaporn
Published: September 2013

Fiber mats of polycapolactone (PCL) containing tannic acid were prepared by electrospinning from tannic acid-containing PCL solutions in 1:1 v/v dichloromethane/N,N-dimethylformamide. The base PCL solution was prepared at 12%w/v and the different amounts of tannic acid (5, 10, and 20% w/w based on weight of PCL) were added in the PCL solution. For 5% and 10% tannic acid-loaded PCL fiber mats, the fibers were smooth, with the average fiber diameter of 1.02 and 1.26 μm, respectively. The amounts of water retention and release characteristics of tannic acid-loaded PCL fiber mats and tannic acid-loaded as-cast PCL films in acetate buffer (pH=5.5) at 30°C were studied. Tannic acid-loaded PCL fiber mats exhibited greater amount of water retention and tannic acid released than the tannic acid-loaded as-cast PCL films.
Analyse the Influence Factors of Energy-Saving and Emission-Reduction in Asphalt Pavement Construction
Authors: Du Li , Li Yu Mei , Li Cong Hao
Published: September 2013

Base on the process of asphalt pavement construction, analyse the influence factors of energy-saving and emission-reduction in asphalt pavement construction. Research shows thatduring the asphalt pavement construction process, all kinds of construction machinery are the main source of energy consumption and emissions; Asphalt mixture also emission part of gases itself, which closely related with the heating temperature of the mixture.
A Concise Route to Fabricate TiO2 Nanoporous and Nanopillar Films Based on Block Copolymer Self-Assembly
Authors: Gong Yu Mei , He Ying Xin , Guo Jing , Zhang Hong
Published: September 2013

This study developed a concise route to fabricate TiO2 nanoporous and nanopillar films based on the self-assembly of block-copolymer thin films in periodic nanostructures. We obtained the perpendicularly oriented cylindrical domains in polystyrene-b-poly (methyl methacrylate) (PS-b-PMMA) diblock copolymer (BCP) films by thermal annealing on ITO substrate modified by a cross-linkable random copolymer, and then these films were immersed into the titanium oxide sol in acetic acid for a few hours. The acetic acid in the sol can selectively swell the PMMA component, which results in titanium oxide sol being loaded to the PMMA component selectively. Then the films were calcined at high temperature to remove the PS-b-PMMA block copolymer, and simultaneously the titanium oxide was transferred in situ to the substrate. As a result, a highly ordered array of nanoporous and nanopillar TiO2 thin film is observed on the ITO substrates depending upon the block copolymer used with PS and PMMA cylinder-forming components. In principle, it can be a general and versatile approach for fabricating functional nanoparticle arrays.
Numerical Investigation of Transverse Tensile Behaviors of Marine Composites under Different Strain Rates
Authors: Qiu Ang , Tang You Hong , Zhao Cheng Bi , Lin Wei
Published: September 2013

In this study, the local stress of unidirectional fiber reinforced marine composites under transverse direction tension is conducted by using a representative volume element (RVE). With the application of fracture mechanics theory, the strength and debonding evolution of the fibre-matrix interface is analyzed and simulated by cohesive elements in FEA. The modeling results fit the experimental results in quasi-static conditions well, which demonstrates a proper simulation method for assessing the transverse mechanical properties of marine composites. Considering the complex work environment in ocean, transverse mechanical behaviors of marine composites under different strain rates is investigated, which would provide guidance for the marine composite designers.
Preparation and Research of Porous KGM/ Collagen II Composite Cartilage Scaffolds
Authors: Huang Ming Hua , Dong Hui , Xu Di Ru , Wang Duan Cheng , Cui Yong Shun , Chen Qing Hua
Published: September 2013

KGM and Collagen II were selected as the main raw materials and ammonia served as the crosslinking agent to prepare the porous KGM / COLII composite cartilage scaffolds by blending method and freeze-drying method. The porosity, average pore size, compressive strength and water absorption were measured on the basis of the related standard. The scaffolds were characterized by SEM and XRD. The results show that the optimal program of preparing composite cartilage scaffolds is KGM (2g), COLII (1g), freeze temperature (-20 ° C) and ammonia (0.1 ml). The optimal cartilage scaffolds are porous three-dimensional network structures which the porosity is more than 90%; the average pore size is about 200μm; the compressive strength is about 0.75Mpa and the water absorption reaches up to 892%.
Structural and Electrical Properties of (Cu, Co) Co-Doped ZnO Thin Film
Authors: Cao Ping , Bai Yue
Published: September 2013

Successful synthesis of Cu, Co co-doped ZnO film is obtained by sol-gel method. The structural and electrical properties of the sample were investigated. X-ray diffraction spectroscopy analyses indicate that the Co and Cu co-doping can not disturb the structure of ZnO. No additional peaks are observed in the Zn0.99Co0.01CuxO and Cu+ and Co2+ substitute for Zn2+ without changing the wurtzite structure. By Hall-effect measurement p-type conductivity was observed for the Cu co-doped film. XPS result confirmed Cu ions are univalent in the films.
The Analysis on the Tribological Properties of CR/EPDM Blends with Chrome-Plated Steel under Dry Sliding
Authors: Zhao Lian Hua , Wei Xiao Bo , Li Xiao Guang
Published: September 2013

It is based on actual working conditions and parameters of the conveyor belt, to reach the purpose of the optimizing rubber by different rubbers mixing technology. Comparison the five kinds rubber and metal of the friction characteristics in dynamic fit, obtained a performance excellent rubber in the specific operating conditions. Then improve the overall service life of the transportation equipment. It is first prepared the same hardness CR and EPDM and blends that is ratio of 2:8, 5:5and8:2 in this article. The pros and cons of the five rubbers are analyzed by friction and wear properties of the above experimental. The test curve of coefficient friction and wear with time has been done under different load at constant low speed, friction and wear and wear mechanism of five rubbers with chrome-plated steel comparatively analyses to determine CR/EPDM = 8:2 blends has the heat resistance and wear resistance are better than CR and EPDM under dry sliding conditions.
Performance of Polluted Source Water Treatment by Biological Aerated Filter (BAF) with Zeolite, Activated Carbon and Anthracite Media
Authors: Wang Dong , Qiu Li Ping , Guo Chun Hui , Liu Qiang
Published: September 2013

The performance of three BAFs with zeolite, activated carbon and anthracite media for the treatment of polluted Huaihe raw water were investigated. All three BAFs performed promising permanganate index (CODMn) and ammonia nitrogen (NH4+-N) removal efficiency as well as the turbidity removal was over 60%. Moreover, the CODMn and NH4+-N removal in the three BAFs were affacted by the characteristics of filter media. Activated carbon and anthracite had better CODMn removal than zeolite. Zeolite had the best NH4+-N removal, followed by activated carbon, anthracite was the worst.
Nitrogen and Phosphorus Removal of Modified A2/O Process on Low-Carbon Domestic Sewage under Low Temperature
Authors: Li Si  Min , Du Guo Shuai , Tang Feng Bing
Published: September 2013

A modified compound multiple-influent A2/O process was used to treat sewage with a low C/N under low temperature, the nitrogen and phosphorus removal was investigated. Raw water was distributed into anaerobic tank and anoxic tank by the proportion of 5:5 to rationally distribute the carbon sources required by anaerobic phosphorus release and anoxic denitrification. And some carriers were added into aerobic tank and anoxic tank separately to stabilize the effect of nitrification and denitrification and improve the denitrification efficiency. The effluent of anaerobic tank and anoxic tank flowed into aerobic tank to reduce the sludge flow path. In order to increase microbial biomass, adjust sludge return ratio was ranged from 50% to 75%. The results showed that when the water temperature is14°C, the concentration of COD, NH3-N, TN and TP in influent were 69.5 mg/L, 33.74 mg/L, 42.31 mg/L and 4.94 mg/L, the effluent quality of the above indexes were 40.1 mg/L, 1.45 mg/L, 12.54 mg/L and 0.46 mg/L, and the average removal of COD, NH3-N, TN, TP were 85.10%, 95.7%, 70.37% and 90.73%, respectively.
Research on Drying Sludge in Brick Making
Authors: Wang Yong , Wang Fen , Ji Min
Published: September 2013

Dried sludge could be used for brick production by firing with shale or clay, which would reduce clay resource exploitation and realize sludge resource utilization. Physical and mechanics parameters of fired shale-sludge brick and clay-sludge brick are tested to examine technical feasibility, and heavy metal leaching concentrations are tested to examine brick safety. The results show that after municipal sludge in Changsha Wastewater Treatment Plant is dried with water content no more than 30%, it can be used for shale-sludge brick and clay-sludge brick firing and qualified produces can be produced. Compressive strength of brick is 10-20 MPa, there is no scum and lime crack on brick body. Under high firing temperature, heavy metal in sludge can be solidified, and leaching concentrations can meet the requirements. By doing so, calorific power of sludge can be utilized and energy saving can be realized.
Study on Nutrient Removal Performance and Biological Community Structure in Hybrid Biofilm Reactor
Authors: Zhou Lu , Li Ge , Shin Hang Sik , Jiang Li Li , Fang Guo Feng , Xing Li Zhen , Li Tao
Published: September 2013

To investigate nutrient removal and biological community structure in wastewater treatment system under different ratio of C/N/P, hybrid biofilm reactor (HBR) and sequencing batch reactor (SBR) in lab scale were set up. Results showed that both HBR and SBR achieved the best removal efficiency of nitrogen and phosphorus when C/N/P=100/6.25/1. With the rise of C/N/P from 50/6.25/1 to 100/6.25/1, the removal efficiencies of NH3-N were greater than 93% in three phases of both reactors; the efficiencies of TN were increased from 65% to 79% in SBR while these values at HBR were from 73% to 86%; the efficiencies of TP were increased from 42% to 93% in SBR while these values at HBR were from 32% to 93%. Microbial community structure response to different C/N/P was determined by PCR-DGGE technology. Similarity coefficient was lowest and denitrifying phosphate accumulating bacteria became dominant bacteria in SBR when C/N/P was 100/6.25/1. There were many functional bacteria in HBR, such as bacteria for removing nutrients (Uncultured BacteroidetesFJ828150), bacteria for removing organic (Uncultured Saprospiraceae) bacteria for removing nitrogen (Ferribacterium sp.), and nitrifying bacteria (Uncultured Nitrospira sp.) which became dominant bacteria. Because of microbial diversity index of biofilm was up to 3.3, similarity coefficient was as low as 43.4%.
Isolation and Characterization of a Strain of Acidithiobacillus ferrooxidans
Authors: Xiao Ju Fang , Qin Song Yan , Huang Peng , Guo Li Na , Chen Yi Chun
Published: September 2013

An acidophilic strain was isolated from drainage in Shanxi coal mine, after 16SrDNA amplification and sequencing analysis, it was identified to be Acidithiobacillus ferrooxidans. The ferrous ion oxidation rate of At.f and pH value were studied during its growth, the results showed that, the strain entering into the exponential growth phase needed about 30 hours, and the oxidation rate was more than 99% after 60 hours. The pH value increased from 2.08 to 2.64 at first 30 hours and then decreased to 2.0, and finally maintained at 2.0 in the whole growth process. The isolated strain provided a potential alternative method to handle the steel-picking sulfuric acid waste liquor.
Research of Biological Phase in Contact Oxidation Pond for Jeans Washing Wastewater Biochemical Treatment
Authors: Ding Zhi Bin , Lu Zhao , Zhang Chao
Published: September 2013

The combined process of coagulation, hydrolytic acidification and contact oxidation was applied to treat the jeans washing wastewater, and the microorganism and COD concentration in the contact oxidation pond was monitored 40 consecutive days. the results showed that Vorticella, rotifers, arcellas, chironomid larvae, nematodes of the genus, changed in the number of the wastewater treatment had obvious indicating effect, activated sludge on the chromaticity of grain had obvious effect of adsorption, and flocculation particle morphological changes could also play a role in indicating.
Effect of MLSS on Nitrosation Denitrifying Phosphorus Removal System
Authors: Zhang Li Cheng , Liu Qiang , Lan Yu , Yu Yang
Published: September 2013

The influence of MLSS on nitrosation denitrifying phosphorus removal (NDPR) process was investigated through the experiments of anaerobic-anoxic NDPR and anoxic NDPR. Experimental results show that the higher MLSS is, the bigger COD removal rate is, and the higher the rates of anaerobic phosphorus release and anoxic phosphorus absorption are. Low carbon sewage will easily lead to insufficient inner carbon source in the system with high MLSS. High concentration of carbon source in the raw water with high MLSS will bring considerable difficulties to returned sludge and sludge treatment. Moreover, excessive MLSS will result in phosphorus release in the later anoxic stage, and lower MLSS can prolong the time of denitrification and phosphorus removal. The system with 5200 mg/L MLSS has the best effect of nitrogen and phosphorus removal.