bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Activities of CaO-SiO2-B2O3 (Al2O3, Fe2O3) Slag System
Authors: Wang Hong Ming , Li Gui Rong , Zhu Xiang , Zhao Yu Tao
Published: November 2012

A mathematical model on activities of CaO-based slag system has been established on the bases of ion-molecule coexistence theory of melted slag structure. The activities of CaO-SiO2-B2O3 (Al2O3, Fe2O3) systems are calculated. The effects of the content of B2O3, Al2O3 and Fe2O3 on activities are analyzed. The results indicate that the activities of CaO and 2CaO•SiO2 are decreased with the increases of B2O3, Al2O3 and Fe2O3. The effect of B2O3 is most remarkable. Moreover, the activity of CaO•SiO2 can be enhanced with increasing the contents of B2O3, Al2O3 and Fe2O3 respectively. These effects of Al2O3 and Fe2O3 are very similar, whereas the effect of B2O3 is most significant. As a conclusion, B2O3 is most effective to inhibit the formation of 2CaO•SiO2 as well as to promote the dissolution of lime.
EBSD Investigation on the Primary Recrystallization in Warm Rolled Ti-IF Steel
Authors: Guo Yan Hui , Wang Zhao Dong , Wei Li Qun
Published: November 2012

The nucleus orientations and the nucleation sites at the early stage of recrystallization were studied by EBSD analysis in Ti-IF steel during direct annealing after warm rolling. It is concluded that the formation of the recrystallization texture is dominated by oriented nucleation mechanism. The recrystallized nuclei with γ-orientation emerge preferentially at the beginning of recrystallization and prefer to form inside the γ-oriented deformation bands and on the boundaries between γ and α-oriented bands.
GAP-Like Scheduling Model of Byproduct Gas in Iron and Steel Process
Authors: Zhou Yong Liang
Published: November 2012

Gas is a key byproduct of the iron and steel process, and the scheduling of gas is the most valuable one in Energy Management System. The production and consumption of the byproduct gas will be related to many sub-processes and tends to encounter imbalance problems. One GAP-like optimization model of gas scheduling is setup, where there are 3 key objectives, minimization of emission, external energy purchasing and instability of the byproduct gas system. The model is NP-Hard and can be find the solution by using intelligent optimization algorithm to realize the static and dynamic scheduling.
Numerical Simulations of SFRC Projectile Penetrating into Limestone Using FEM/SPH Coupling Method
Authors: Han Jing , Wang Hua , Wang Zhi Fei
Published: November 2012

The method of using efficient inert projectile with highly efficient propulsion has great potential for the rapid and efficient excavation of rocks and ore in both surface and underground. In this paper, a series of numerical experiments were performed to simulate rock fragmentation resulted from steel fiber reinforced concrete (SFRC) projectile by using hydrodynamic finite element code AUTODYN. The fully coupled method was been adopted, in which the limestone, molded using Lagrangian mesh, is coupled to SFRC projectile molded using smoothed particle hydrodynamics (SPH) method. The numerical model was verified by comparing the simulation results with the field experiment data. Furthermore, the effect factors of geometric parameters of SFRC projectile and fibers content on the muck production were also discussed. The results of this study suggest that numerical simulation could be substituted for field experiment used for performance assessment of SFRC projectile.
Effect of Blowing Agent and Polyethylene Glycol on Cellular Structure and Mechanical Properties of Chloroprene Rubber
Authors: Yi Hong Ling , Wei Ting , Heng Lin , Zheng Bai Cun
Published: November 2012

In this paper the closed-cell sponge of chloroprene rubber(CR) were produced by foaming agent Azodicarbonamide (AC) and Oxybis (benzene sulfonyl) hydrazide (OBSH). The blend blowing agent AC/OBSH was more effective than the pure AC as it could produce chloroprene foam with greater cell porosity, more uniform and better cell distributions. The CR foam prepared with AC/OBSH had better tensile strength and tear strength than pure AC, but higher Shore C hardness. The Polyethyene glycol (PEG) modified Zinc Oxide (ZnO) could accelerate curing and foam process simultaneously. Increase the content of PEG, CR foam has bigger swell ratio, smaller cell size, and better softness.
Research on Electrical Insulating Property of Disk Insulator in High Voltage GIS Insulated Grounding Module
Authors: You Xian Heng , Zhang Yu , Zhao Xin , Gong Shao Cheng
Published: November 2012

Along with the GIS(Gas insulated metal enclosed switch equipment) miniaturization and three-phase common box, GIS disk insulator electrical properties are getting more and more attention of designers. In order to provide the necessary data and the theoretical support to the insulation coordination design of the disk insulator in engineering, the electric field and the potential distribution on the disc insulator surface of 126 kV GIS isolation grounding module are carried out numerical simulation by using the finite element method. And the maximum field strength of simulation are compared to the allowable field strength values of insulators in engineering in order to see whether it has certain insulation margin, thus put forward the improvement scheme of disc insulator structure.
Influence of Diisocyanates on Dynamic Mechanical Properties of Castable Polyurethane Elastomers
Authors: Chen Xiao Dong , Yi Yu Hua
Published: November 2012

A series of castable polyurethane elastomers, based on polytetramethylene glycol as soft segments and toluene diisocyanate, 4, 4’-diphenylmethane diisocyanate, P-phenylene diisocyanate as diisocyanates respectively, were synthesized. The dynamic mechanical analysis method was utilized to determine tan delta property (tanδ). Also the influence of diisocyanates on the dynamic mechanical properties of castable polyurethane elastomers was analyzed. It can be concluded that the P-phenylene diisocyanate system elastomers have the most excellent dynamic mechanical properties.
A New Textile Sizing Prepared by the Hemp Core Cellulose Ethers
Authors: Ji Ying Chao , Wang Ying , Wang Fei , Li Hong
Published: November 2012

As the key process of weaving, sizing is one of the processes which are of great costly and serious pollution in the whole cotton-textile production chain. Great efforts had been made to study new sizing to reduce costs and environment pollution. In this paper, Methyl cellulose ether (MC) and hydroxypropyl methyl cellulose ether (HPMC) were prepared by the hemp core and further used as a textile sizing. The chemical structure of the hemp cellulose ether was characterized by the FTIR analysis. The paste viscosity was tested by the Viscometer. The sizing properties of hemp cellulose ether were evaluated by the weaving process. The results indicated that the wrap breakage rat, weft breakage rate and loom efficiency of MC and HPMC blended sizing was similar to those of PVA sizing. Compared to COD in the desizing wastewater of 3600 mg/L of PVA, the COD of hemp sizing was very small. It was 330 mg/L. Therefore, it is concluded that the hemp core ether is a new and environment-friendly textile sizing, which has low cost and contributes a healthier ecosystem.
Study on Processing of Cotton / Akund Fibers Blended Yarn
Authors: Wang Qin , Jiang Xiao , Stojanovska Elena , Cheng Long Di , Fan Wen Hong
Published: November 2012

Basic properties of akund fibers are introduced briefly. Cotton and akund fibers are spun into 18.45tex, 40/60 and 18.45tex, 33/67 cotton/akund blended yarns. The influence of carding processing length is studied. When the carding processing length is longer than the main length of akund fiber, the carded sliver has the lowest short fiber and neps content. This result is proved by a series of experimental tests, such as yarn tensile strength, yarn hairiness and irregularity. The results of both yarns are compared and analyzed. The overall qualities of cotton and akund /cotton blended yarn can meet the basic requirments of aparrel and home textile
The Reseach of the Morphology and Mechanical Properties of PA6/POE-g-MAH/OMMT Ternary Blends
Authors: Xu Jun , Xiong Yu Zhu , You Wen , Huang Cai Juan
Published: November 2012

Prepared POE-g-MAH/PA6, POE-g-MAH/OMMT/PA6 blends. The morphology of the blends had been characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM),and the blends had been detected by mechanical performance test. Test results showed that with the increasing of the content of POE-g-MAH’quality, PA6 / POE-g-MAH notched impact strength showed a increaing trend, but tensile strength showed a decling trend;POE-g-MAH/OMMT which is Core-shell structure could greatly increase the effective volume fraction of POE-g-MAH, paly a role of synergistic toughening for PA6 matrix.
Shear Strength of Void Slab with Polystyrene Forms
Authors: Kim Seung Hun
Published: November 2012

Void slab systems with polystyrene form and precast concrete deck have been used to reduce the construction period and the self-weight of the slab. This paper presents experimental works on the shear of the void slabs. Four specimens were tested. The main parameters of experiments were the type of polystyrene forms and the thickness of slab. Shear performances of void slabs were evaluated on the basis of failure patterns, load-displacement curves, and ultimate shear strengths. Based on the test results, the unidirectional void slabs had the best shear resistance performance when they used PF2 type of polystyrene forms. For all specimens that failed due to shear, ultimate shear strength was 52% or higher than nominal shear strength by ACI318-08. This indicates that void slabs have a sufficient shear performance in the truss bar arrangement direction
The Influence of Temperature on Toughness of PA6/POE-G-MAH/OMMT Blends
Authors: Wen You , Xiong Yu Zhu , Xu Jun , Huang Cai Juan
Published: November 2012

Composite materials of POE-g-MAH，OMMT and PA6 were prepared by blending technology. Thermodynamic performances of PA6/POE-g-MAH/OMMT were determined in different temperature by SEM, TEM and XRD. The experimental results indicate that the notched impact strength of bends with the same component gradually increases as temperature increases in the range of -37 °C-23°C ,and with POE-g-MAH/OMMT content increasing, the impact strength keeps rising and stress whitening occurs; But at 50°C, higher than the glass transition temperature of PA6/POE-g-MAH/OMMT , plastic deformation begins easily and strongly. Because POE-g-MAH to a certain content, the stress state changes from plane strain to plane stress, make the ability of plastic deformation increasing .The plastic deformation absorbs many impact energy, and make the stress whitening phenomenon.
AC Electrical Properties of Titanate-Linkcoupled Carbon Black Filled Polypropylene Composites
Authors: Ding Nai Xiu , Wang Li Li , Zhan Mao Sheng , Liu Liang , Xu Shuai Feng
Published: November 2012

In this paper, Carbon black was activated using titanate-type coupling agent, and then filled into polypropylene to prepare conductive composites, whose alternating current (AC) electrical properties, including impendence Z, phase angel θ, dielectric constantε and dissipation factor tgδ that is a function of frequency and carbon black concentration were investigated by AC impedance spectroscopy. The percolation threshold of 5wt% carbon black concentration was obtained from the experimental result of volume resistivity for the conductive composites. It was found that the variation of AC electrical properties, which is a function of frequency, was dramatic and dependent on the filler concentration. It was also found that dependence of the real and the imaginary parts of impendence on frequency decreased with the increased concentration of carbon black, while the phase angle, dielectric constant and dissipation factor increased. The AC electrical properties were given based on the conductive network model and the corresponding equivalent circuit were concluded
The Effect of Hydrophilic Components of Zinc Based Copolymer on its Self Polishing Behavior
Authors: Jo Nam Ju , Kim Dong Wook , Kang Tae Wun , Park Hyun , Lee In Won , Chun Ho Hwan
Published: November 2012

The zinc methacrylate copolymers with various monomer compositions were prepared for investigating the effects of zinc methacrylate, 2-methoxyethyl acrylate contents on self polishing behavior. The effect of molecular weight of the self polishing copolymer(SPC) was also investigated. The characterizations of copolymers were performed by fourier transform infrared spectroscopy, proton nuclear magnetic resonance, gel permeation chromatography, and differential scanning calorimetry. The leaching rate of SPC was determined from the reduction of dry film thickness after seawater immersion in a dynamic condition. The experimental results revealed that leaching rate and mechanical property of the film could be controlled by the hydrophilic monomer composition of zinc based copolymer.
Study on the Synthesis of Polyester Type Waterborne Polyurethane and Modifying by Nano-Sized Particles
Authors: Chen Yi , Liu Wen Yong , Zeng Guang Sheng , Li Xiang Gang , Gu Ling
Published: November 2012

The waterborne polyurethane was prepared by reaction between polyester polyol and isophorone diisocyanat, different nanoparticles were filled into the system for modification. The effect of different ratio of materials, the kinds and mass of nanoparticles on the characters of waterborne polyurethane latex and film were investigated. The results showed that the stable polyurethane latex and polyurethane film with perfect characters could be prepared when the ratio of NNCO/NOH was 2.5~3.0, the DMPA with a mass fraction of 5%~6% was added into reaction as a macromolecule extender after adding small molecule chain extender BPO. Filling nanoparticles into the polyurethane latex could improve the water resistance and mechanical characters of the film. Nano-sized SiO2 was a better modifier than TiO2, and the appropriate mass fraction of SiO2 was 6% of polyurethane raw materials.
The Effects of Synthesis Conditions on PUF Microcapsule Morphology
Authors: Hu Ning Ning , Huang Hao Han , Cui Hong Zhi
Published: November 2012

In this paper, self-healing PUF microcapsules were prepared by in situ polymerization. The test results show that: 1) the ratio of core/wall material can had a significant effect on the average particle size of microcapsules. The ratio happens to be 1.0 to 1.0, best coating, relatively dense surface can be achieved. When the ratio reaches 1.4 to 1.0, the microcapsules have worst coating, particle size, distribution of wide range, and comparatively rough surface. When the ratio is 0.8 to 1.0 or 1.2 to 1.0, preferable coating, uniform particle size and its distribution, as well as smooth and dense surface can be obtained. 2) The faster the stirring speed, the smaller the particle size of microcapsule will be. And the size becomes bigger and varied with the stirring speed decreasing.
Explorative Research on the Magnetostriction of Carbon Black Filled Polypropylene Composites
Authors: Ding Nai Xiu , Wang Li Li , Zhan Mao Sheng , Li Lei , Xu Shuai Feng
Published: November 2012

Carbon black (CB) filled polypropylene composites were prepared, with CB modified by coupling agent. Three phenomena could be observed during the course of the magnetostrictive properties measurement. The first was that a relative large magnetostriction of 115ppm, comparative with that of metallic material, was obtained. The second was that the magnetostriction was strongly dependent on magnetic intensity and time interval. And the third was that obvious hysteresis effect appeared which was seldom found for material of TbxD1-xFe2-y thought as typical magnetostritive material.
Efficiency Inorganic Thin Film Solar Cells with Flexible Substrate
Authors: Sun Nan Hai
Published: November 2012

The development of CdTe/CdS solar cells on flexible substrates is reviewed in this article. Photovoltaic structures on lightweight and flexible substrates have several advantages over the heavy glass based structures in both terrestrial and space applications. The cells mounted on flexible foil are not fragile, the requirements of the supporting structures are minimum and they can be wrapped onto any suitably oriented or curved structures. The specific power of the solar cells is an important factor in space applications and hence development of photovoltaic devices on light weight substrates is interesting. CdTe is one of the leading candidates for photovoltaic applications due to its optimum band gap for the efficient photo-conversion and robustness for industrial production with a variety of film preparation methods. Flexible solar cells with conversion efficiencies exceeding 11% have been developed on polyimide foils. The development of CdTe devices on metallic substrates is impeded due to the lack of a proper ohmic contact between CdTe and the substrate. The polymer substrate has the advantage that the devices can be prepared in both “superstrate” and “substrate” configurations.
The Special Magnetic Transition in FeX/(In2O3)1-X Granular Films
Authors: Huang Bao Xin , Wang Jun Hua , Wang Zhen Hua
Published: November 2012

Fe/In2O3 magnetic granular films have been prepared by radio frequency sputtering (rf) method. The results reveal that the nanometer-sized Fe grains uniformly disperse in the amorphous matrix In2O3 for the as-deposited samples. At room temperature, the Fe0.35/(In2O3)0.65 film shows a superparamagnetic behavior and 5.2% magnetoresistance (MR) ratio is obtained. The susceptibility measurements manifested that the blocking temperature is 50 K. Blow a certain freezing temperature Tf about 10K, the film transits from ferromagnetic state to a composite-cluster state in which the Fe atoms dispersed randomly in In2O3 severs as intermedia to couple the Fe grains together. In this case, the MR ratio of the film increases dramatically and a maximum giant magnetoresistance (GMR ) ratio up to 82.4% is obtained at 2.2 K, which is quite different to the MR effect at room temperature. The mechanism of this GMR is attributed to the increase of the hopping mobility of carriers under the applied magnetic field.
Size and Sp2 Fraction Dependence of Energy Gaps in Carbon Dots
Authors: Hu Sheng Liang , Zhao Qing , Guo Yan , Liu Jun
Published: November 2012

A simple quantitative model is developed to understand the origin of the photoluminescence (PL) behavior of carbon dots. The sp2 fraction and size depend on the energy gaps in carbon dots containing a mixture of sp2 and sp3 bonding. The finite-sized molecular sp2 domains within the carbon-carbon and carbon-oxygen sp3 matrix behave as the luminescence centers and when they are opposed to the surface of carbon dots, surface passivation by organic molecules is required for preventing the occurrence of nonradiative recombination. According to our calculations, highly efficient and tunable PL from carbon dots can be achieved by controlling the nature of sp2 sites.
Luminescent Properties of Zn2SiO4:Eu3+,Dy3+ Phosphors via Sol-Gel Process
Authors: Han Xiu Mei , Hao Shu Ai , Wang Ying Ling , Sun Gui Fang , Qi Xi Wei
Published: November 2012

Zn2SiO4:Eu3+, Dy3+ phosphors have been prepared through the sol-gel process. X-ray diffraction (XRD), thermogravimetric and ddifferential thermal analysis (TG-DTA), FT-IR spectra and photoluminescence spectra were used to characterize the resulting phosphors. The results of XRD indicated that the phosphors crystallized completely at 1000oC. In Zn2SiO4:Eu3+,Dy3+ phosphors, the Eu3+ and Dy3+ show their characteristic red(613nm, 5D0-7F2), blue (481nm, 4F9/2–6H15/2) and yellow (577nm, 4F9/2–6H13/2) emissions.
Effects of Y2O3 and In2O3 on the Electrical Properties of SnO2-Based Varistors
Authors: Zang Guo Zhong , Li Li Ben , Wang Sheng Lai
Published: November 2012

The effects of Y2O3 and In2O3 on the microstructure and electrical properties of SnO2-based varistors were investigated. It was observed that the grain size of the samples decreased with doping Y2O3 and In2O3 and accordingly, the breakdown electrical field EB increased greatly. The measurements of barrier height and grain size reveal that the variation of grain size was not the only reason for the change of electrical properties of the sample doped with In2O3 and, the improvement of nonlinear coefficient α may mainly attribute to the increase of barrier height. Some energy levels of different state defects on the grain boundary were obtained and the energy about 0.15 eV detected here of all the samples may be attributed to the activation of . The different effects of doping Y2O3 and In2O3 indicate that In2O3 is more effective to improve nonlinear electrical behavior and breakdown electrical field of SnO2-based varistors.
The Influences of Catalysts in the Thermal Decomposition of Barium Nitrate as Pyrotechnic Oxidants
Authors: Chen Xin , Zhang Xiang , Feng Ming Hui , Pang Gong Pei , Lv Hui Ping
Published: November 2012

A differential thermal analyzer was used to analyse the thermal decomposition properties of samples mixed barium nitrate with 2 percent of CuO, Cu2O, Fe2O3, Fe3O4, CoO, NiO, SnO2, PbO, and MnO2 respectively. The samples were then made into firecrackers and tested on its displaying effect and mechanic sensitivity. The results show that the thermal decomposition temperature of barium nitrate added with Cu2O decreases by 45°C. Besides, the explosive sound ratio of CoO increases to 85% and its paper scrap ratio reaches to 65%. The mechanic sensitivity of all the samples increases slightly.
A Study on PEMFC Faults Diagnosis Based on Wavelet Analysis
Authors: Pei Feng Lai , Li Zhuang Yun , Zhou Su
Published: November 2012

The study of Proton Exchange Membrane Fuel Cell (PEMFC) faults mechanism and diagnosis can afford theoretical and technical supports for the future mass production and applications of PEMFC stacks and systems, which need modularization and high reliability. Most of the existing fault diagnosis methodologies, such as Cell Voltage Monitoring (CVM) method, require the knowledge of numerous parameters which may lead to a special inner parameter monitoring setup. The corresponding devices increase the cost and are not suitable for stack modularization and system application. In this paper, a simple and low-cost PEMFC faults diagnosis method using discrete wavelet transform is described. The method only uses the stack information for signal feature extraction. After that, by faults identification and classification, several typical faults including temperature fault, inlet flow inefficiently supplying fault and membrane dehydration fault have been distinguished. A semi-empirical distributed parameter stack model is employed for simulating typical faults that may occur. The simulation results demonstrate that the application of wavelet theory to PEMFC diagnosis is feasible, reliable and promising.
Effect of Fenton Reagent on the Thermal Stability of Proton-Exchange Membrane for Fuel Cell
Authors: Lu Yi Heng , Wei Feng , Liu Wei Long
Published: November 2012

The thermal stability and thermal degradation kinetics of proton-exchange membrane were investigated, as the membrane reacted with Fenton reagent at 80°C. Non-isothermal kinetic data of the membrane were analyzed by using the thermo-gravimetry analysis and the Kissinger、Flynn-Wall-Ozawa and Friedman methods under the conditions of flowing gas nitrogen and the heating rate of 5、10 and 20°C/min. The minimum temperature of the thermal degradation is greater than 360.8°C in the conversion rate of 10%. The thermal decomposition process occurred one step. The average value of apparent activation energy is 245.48kJ/mol, pre-exponential factor is 2.52×1018 min-1, the reaction mechanism is controlled by D4.
Modeling of the Tensile Deformation Behavior of SiCp/Fe Composites
Authors: Wang Yao Mian , Yang Huan Ping , Zhang Cong Hui
Published: November 2012

A combined model taking account of the dislocation strengthening effects and particle cracking during tensile straining based on Eshelby equivalent inclusion method is presented to model the deformation behavior of SiCp/Fe composites. Stress-strain curves of the composites were simulated and it is found that the curves vary obviously with the volume fraction and particle size. The yield stress is increased significantly by increasing the volume fraction and decreasing the particle size. Stress in particles is very high during straining and the fraction of cracked particles increased obviously with increasing the particle size. These results indicate that higher volume fraction and finer particles can give better mechanical properties of the composites attributed to the increased load sharing effect and dislocation strengthening effects of the matrix.
Analysis and Evaluation of Active Based on MnOx-CeO2 Catalysts in Process of Particle Combustion for Diesel Particulate Filter
Authors: Zuo Qing Song , E Jia Qiang , Gong Jin Ke , Wang Shu Hui , Wang Chao , Chen Tao , Gao Jun Xu
Published: November 2012

In order to reduce effectively the particulate ignition temperature of Diesel Particulate Filter containing MnOx-CeO2 catalysts，the physical and mathematical calculation models of MnOx-CeO2 catalysts were established on Diesel Particulate Filter，and according to bench tests, the activity measurements of the five different concentrations were processed for MnOx-CeO2 catalyst. The results indicated that when concentration is 20ppm, the ignition temperature can be droped about 105°C, activity measurements of Kp、Kpm and ΔKp decrease 10%, 8% and 7% respectively. Meanwhile, regeneration time can be shortened to 7min. It shows that Diesel Particulate Filter which contains concentration of this type not only has higher regeneration rate and level , but also decrease effectively exhaust back pressure.
Electrochemical Behavior of Copper in the (NaCl-KCl-CuCl2) Molten Salt
Authors: Li Yun Gang , Zhang Kuai , Li Jie , Liu Li Min
Published: November 2012

2 system at 700°C. The results showed that so long as Cu appears or the electrodeposit process carries on, Cu++ can be reduced into Cu+; that the electrochemical reaction process of copper is a quasi-reversible process mix-controlled by ion copper diffusion rate and electron transport rate; that the electrochemical reaction mechanism is Cu++e-→Cu; that the electrocrystallization process of copper is an instantaneous hemispheroid three-dimensional nucleation process; that the Cu ion diffusion coefficient is 2.5×10-4cm2∙s-1 at experimental conditions.
Modeling of Photovoltaic Cell Based on BP Neural Networks Improved by MEA
Authors: Gao Jin Lan
Published: November 2012

Photovoltaic cell is the central part of solar photovoltaic power generation system, so how to establish effective and accurate photovoltaic cell model is crucial. Based on the research of PV cell characteristic as well as the mind evolutionary algorithm and neural network, this paper put forward a new kind of BP neural network modeling method based on MEA, and used for photovoltaic battery modeling. In this model, using MEA for neural network parameter optimization to overcome defects of the traditional BP neural network which has slow convergence speed, easy to fall into local optimal solution and other shortcomings, and then improved the modeling accuracy and reliability. The test and simulation results showed that the improved neural network model is high precision, little error, short training time and it is effective.
Synthesis of Magnetic Photocatalystic Particles for Bacterial Control
Authors: Chang Yi Tang , Chang Yu Jie , Chiang Cheng Che
Published: November 2012

Magnetic photocatalystic particles (MPCs) become an alternative process for water and wastewater treatment due to the high removal rate of organic pollutants and a good recovery. Little information of MPCs on the control of microorganisms was obtained in previous researches. In this study, the synthesized MPCs combined with 365 nm UVA irradiation under a light of 1.0 mW/cm2 were applied to control a typical gram-negative strain Staphylococcus sciuri (99% Identified by the NCBI website), which was isolated from an indoor traditional market in the middle area of Taiwan. As a result, the highest bactericidal efficiency (BE) of MPCs contained 0.50 g magnetic particles in nutrient broth was achieved to 68.18% at 50 mins. Considering to each contribution of bacterial control, UVA irradiation played an important role of BE increased from 34.88% at 10 mins to 63.64% at 50 mins. Photocatalystic reaction provided extra more 11.02% of BE at initial 20 mins. The synthesized MPCs demonstrated good crystallinity of anatase by SEM-EDS and XRF. The 76% MPCs can be recovered by simple magnets after photocatalystic reaction.
Soil Pollution Prevention Planning of Poyang Lake Ecological Economic Zone
Authors: Zhang Qiu Gen , Tang Xin Hua
Published: November 2012

Soil pollution is the important part of environmental pollution which affects the quality of agricultural products and safety of human health. taking Poyang Lake Ecological Economic Zone as the specific study object, on the basis of an overview of soil pollution status quo in the area, the soil pollution prevention plan of Poyang Lake Ecological Economic Zone was probed into which included the guiding ideology and principles, the planning target and indicators, soil function zoning, planning content and planning measures, while the planning content includes emphasis content plan of agricultural soil pollution prevention and contaminated sites ecological restoration, emphasis pollutants plan, emphasis regional plan, emphasis industries plan and emphasis project plan. It can improve the soil environment quality of Poyang Lake ecological Economic Zone to provide environmental guarantee for sustained and healthy development in the area.
The Impact of Paper Formation on Printability
Authors: Hu Kai Tang , Li Ming , Hu Bing
Published: November 2012

paper formation, smoothness, bulk, ink absorption, printability. Abstract. The impact of the paper formation on smoothness, compressibility, uniform of ink absorption is discussed in this paper. The experimental esults indicate that the paper with bad formation leads to higher apparent bulk, and the paper with bad formation shows nonuniform calendering and low compressibility. The bad formation of paper also results in deformation and omission of printing dots, which affects directly the reproduction of the printing images.
Studies on Phosphate Removal from Aqueous Solution by Honeycomb-Cinder Slag
Authors: Wang Li Jun , Zhang Hua Yong , Zhang Lu Yi
Published: November 2012

The feasibility of using honeycomb-cinder slag as an adsorbent for phosphate removal from aqueous solution was investigated in batch experiments as a function of initial pH, contact time, adsorbent dose, and solution temperature. The results indicated that the solution pH significantly influenced the phosphate adsorption; 1440 min was enough to reach equilibrium for any concentration. Langmuir isotherm model gave well fit for phosphate adsorption, and the adsorption process followed pseudo second-order model. Desorption study exhibited that the phosphate adsorption on the honeycomb-cinder slag is not completely reversible. Results showed that honeycomb-cinder slag could be used as an adsorbent to uptake phosphate from wastewater.
A Study on the Strengthened Oxygen Delignification of NaOH-AQ Pulp of Fast Growing Poplar with Low Kappa Number
Authors: Ji Xing Xiang , Chen Jia Chuan , Yang Gui Hua , Tian Zhong Jian
Published: November 2012

In this paper, strengthened oxygen delignification of NaOH-AQ pulp of fast growing poplar with low kappa number (Kappa number 13.5, viscosity 851ml/g, brightness 37%ISO) was introduced. By changing different conditions of strengthened oxygen delignification: alkali dosage, temperature, time, oxygen pressure and assistant agent, etc., and detecting and analyzing the pulp kappa number, viscosity, brightness and delignification of the lignin after strengthened oxygen delignification, conditions better suitable for strengthened oxygen delignification of NaOH-AQ pulp was obtained: pulp consistency 10%, alkali dosage 2.5%, H2O2 dosage 3%, MgSO4 dosage 0.5%, oxygen pressure 0.6Mp, temperature 100°C, time 60min; under the conditions, the brightness of the pulp reached 77.2%ISO , pulp viscosity was 748ml/g, the pulp yield was 95%. This provided an experimental and feasible reference for TCF bleaching of NaOH-AQ pulp of fast growing poplar with low kappa number.
Reliability Based Buckling Analysis of Composite Panels with Tophat Stiffened Topology
Authors: Xue Xiao Guang , Li Guo Xi , Yang Jing Zhao , Gong Jing Zhong
Published: November 2012

A reliability based analysis method for composite panels with tophat stiffened topology was presented in this paper. An energy based grillage method was developed for the buckling problems of the stiffened panels subject to bi-directional in-plane loads. The variables that have large impact on structural safety were identified using a sensitivity analysis procedure. The coupling effects of the plate dimension ratio and in-plane loading ratio on the critical buckling loads were investigated.
Study on Strategy Improvement of Yeast Transformation Experiment Based on ANP Method
Authors: Yang Xu , Wang Ya Ming , Zhao Peng , Yu Xu Ya
Published: November 2012

Combining with the influential index system of yeast transformation experiment, ANP method was adopted to solve the strategy improvement problem of yeast transformation experiment. Based on conclusion of existed study, the influential index system of yeast transformation experiment is developed combining with the fundamental experiments and interviews of experts in such fields. Then based on ANP theory, comparison of influential factors in the yeast transformation experiments is made, and strategies of improving the experiment are obtained in order to achieve economical goal. Adopting such system and method in the yeast transformation experiment, the number of such experiment could be effectively reduced and thus the cost of the whole experiment, and also the effect of the experiment are good, so the theory and method could be used in the familiar experiment.
Research on the Scale Density Extraction Technology of Cashmere and Wool
Authors: Liu Yong Cai , Liu Ya Xia , Shang Shu Yuan , Yuan Ye , Yang Wen Hua
Published: November 2012

This paper studied how to identify the cashmere and wool fibers by scale density. The scale density is extracted in frequency domain. The theory of extracting scale density and image preprocessing are given in this paper. The samples are 100 cashmere images and 100 wool images. The recognition rate is above 83% by SVM cross validation. The result reveals that scale density is a valid feature in identifying the cashmere and wool fiber.
Electricity Production in Microbial Fuel Cells Using Brush Bio-Anode and Bio-Cathode Made of PAN-Based Carbon Fibers
Authors: Zhang En Ren , Ji Qiang , Liu Lei
Published: November 2012

Microbial fuel cells with brush bio-anode and bio-cathode made of PAN-based carbon fibers were constructed, and the electricity production was investigated. Experimental results indicate that both the anode and the cathode could be catalyzed by mixed bacterial cultures. Oxygen-reduction at the cathode could be carried out effectively with the assistance of catalytic action by bacteria, enhancing the electrochemical properties of the cathode. Stable electricity production could be obtained with maximum power 5.6 mW (corresponding power density ~2.1 W/m3 MFC volume) when operating MFC in continuous flow mode. PAN-based carbon fibers were shown to be suitable electrode materials for MFCs, especially in systems for the future applications.
Separation of Curcumine (a Functional Food Colourant Material) from Rhizoma curcuma longae by Aqueous Two-Phase Systems
Authors: Wu Jiang , Ban Li Tong , Wang Yu
Published: November 2012

The objective of this paper was to separate curcumine from Rhizoma curcuma longae and aqueous two-phase extraction technology was employed to perform the study. Four types of PEG (400, 600, 2000 and 4000) and three types of salt ((NH4)2SO4, KH2PO4 and K2HPO4) were tested to form the aqueous two-phase systems. The results showed that the ATPS composed of PEG 400 and (NH4)2SO4 were the best. And the partition coefficient of curcumine could reach 21.79 when the concentration of PEG 400 and (NH4)2SO4 was 14.6% and 26% respectively.
Crosslinking Characteristics of an Genipin-Fixed Porcine Acellular Dermal Matrix
Authors: Dan Nian Hua , Xiao Shi Wei , Hu Yang , Dan Wei Hua
Published: November 2012

The determination of aldehyde in genipin(GP) was carried out through solution silver mirror reaction and curpous oxide reaction. Influence of various dosage, pH, temperature and reaction time on shrinkage temperature of GP-crosslinked porcine acellular dermal matrix (GP-pADM) were investigated. The cytotoxicity and cell morphology of GP-pADM were observed. The results reveal that the existence of aldehyde is proved by silver mirror reaction and curpous oxide reaction. With increasing dosage of GP, shrinkage temperature of pADM increase. And with increasing pH, temperature and time, shrinkage temperature exhibit an early ascending trend and then decline slightly. Cytotoxicity of GP-pADM is 0 grade with great morphology, cell L929 could adhesive grow on the surface and in the pore of this material. The implications of all this are that GP is an ideal biological crosslinking agent for biomaterials.
Analyze Efficacy of Traditional Chinese Medicine Based on OSC-OPLS-DA
Authors: Nie Bin , Du Jian Qiang , Yu Ri Yue , Xu Guo Liang , Liu Hong Ning , Wang Yue Sheng , Huang Li Ping
Published: November 2012

Metabolomics is a good means for analyze Traditional Chinese Medicine efficacy. The paper purpose a methods to deal with the Metabolomics data, and analyze the efficacy of Traditional Chinese Medicine based on OSC-OPLS/O2PLS-DA. The method was proved to be feasible and effective after tested the data which hot natures treat the cold syndrome.
Particle Loosening on the Surface of Dense Hydroxyapatite in Water
Authors: Seo Dong Seok , Kyu Hong Hwang , Lee Jong Kook
Published: November 2012

This work describes dissolution and related mechanical weakening of phase-pure and dense hydroxyapatite (HA) in distilled water of pH 7.4. Phase-pure HA powder has been synthesized by a wet precipitation method. After uniaxial and cold isostatic pressing, and sintering at 1200°C, dense HA with 98% above of the theoretical density has been obtained. The results show that HA powder has stoichiometric composition with a Ca/P ratio 1.67 ± 0.02. Even after extended exposure for 10 h, no second phases, such as tricalcium phosphate (TCP) and calcium oxide can be observed. Although the HA is supposed to be stable in liquid environment, surface dissolution appears specifically at material’s grain boundaries after immersion for 7 days. Following further immersion to 14 days, grain boundary dissolution progresses interior to the bulk following these paths. This dissolving behavior generates HA particles, disintegrates dense microstructure and at least forms micron-scale cavity. Mechanical property of the HA has been also affected. Fracture toughness (KIc) of the HA sintered body is approximately 1.0 MPa•m1/2. It drastically decreases to almost half of the initial value due to the severe surface dissolution
Low-Power Control and System Performance Research for Magnetic Flywheel
Authors: Fu Hong Ya , Liu Ping Fan , Zhang Qing Chun , Li Guo Dong , Dong Di Bo
Published: November 2012

The magnetic flywheel is widely used in energy storage and spacecraft, and it needs to reduce the system’s power consumption effectively when designing the controller. Always, the magnetic bearing system’s performance depends on the tracking performance of the desired force signal. In order to balance the two goals between reducing magnetic system’s power consumption and guaranteeing its performance, a current power allocation way was proposed, and a static current optimization was given based on the way. According to the simulation and experimental results, this method can reduce the magnetic bearing system’s power consumption significantly and keep the tracking performance of force signal well on the same time.
Design of the Indoor Golf Robot for Automatic Picking up and Putting the Ball Based on Fischertechnik Model
Authors: Sun Zhen Ning , Chen Xin , Li Hao , Zou Shen
Published: November 2012

As a kind of innovative teaching system, the fischertechnik model provides a best carrier for educational innovation and experimental innovation. Based on the fischertechnik model, we design the indoor golf robot to pick up the ball to put it properly. The paper’s idea fills the technical gap of automatic picking up the ball of indoor golf in the current market and briefly introduces a kind of structure design and its prospect.
Study of Dust Sampler System Based on Single Neuron PID
Authors: Sun Cheng Xun , Zhu Bao Yu , Li Xin , Wang Tie
Published: November 2012

The sampling flow will be decreased by the weakness of filterable membrane permeability after the dust sampler working for period of time. It seriously affects the measurement accuracy, so keeping the dust sampler working under the constant gas flow is important. Gas flow can be adjusted accurately in time to ensure constant flow based on single neuron adaptive PLC algorithm and PWM technique. Apply ZigBee wireless communication technology on indoor positioning and remote monitoring.
Dynamic Sliding-Mode Control with Backstepping for Underactuated AUV in Diving Plane
Authors: Guo Li Dong , Yang Li Xin , Jia He Ming
Published: November 2012

A dynamic sliding-mode control (DSMC) with backstepping is proposed for diving control of autonomous underwater vehicle (AUV), where surge force and stern plane are only available for vehicle's 3DOF diving motion. First, an equivalent model of AUV is developed. Then, the DSMC with an asymptotical sliding surface is proposed for the trajectory tracking control of AUV. Moreover, the analysis of stability can be completed by Lyapunov stability theory. Finally, To demonstrate the effectiveness of the proposed method, the simulation results are illustrated in this paper. simulation results show that, the tracking precision and the robustness of the system are improved under the proposed control method.
Design of Automatic Control System for Precision Seeder Test-Bed
Authors: Chen Jin , Hang Chao , Li Yao Ming , Gong Zhi Qiang
Published: November 2012

In order to improve the operating efficiency of the seeder, design an automatic control system, this study adopts programmable controller PLC, introduced the composition and connection way of hardware, part program of the ladder diagram, and a variety of modes of operation technology, fully meet the requirement of automatic control, experimental studies have shown that the qualified rate of seeding is more than 90%, up to 500 discs per hour.
Application of MRI to Monitor the Process of Navel Orange Ripening
Authors: Zhang Jin Sheng , Li Yun , Wang Na , Ruan Roger
Published: November 2012

Low field nuclear magnetic resonance (NMR) technique was used to evaluate the capacity of NMR spectrometry in characterizing the different behaviors of water protons in navel orange during growth. Carr-Purcell-Meiboom-Gill (CPMG) sequence and mult-exponential regress model were used to calculate the spin-spin relaxation time (T2) of orange samples. Meanwhile, chemical properties (etc. total sugar, acid and solid content) were tested. Statistics analysis shows a correlation between chemical properties of orange and NMR relaxation time during growth, which indicate that interactions between molecules and water protons in orange are involved. Evaluating the behavior of liquid water by NMR shows a new view for better understanding the mechanisms of the macromolecular formation. Changes in NMR relaxation time parameters would be helpful for understanding the mechanism of decay and damage. Therefore, it would be helpful for finding a better food preserving method for the long term storage in the future.
Investigation of OpenCV Image Processing Technique Applied in Wind Tunnel Ice-Shape Measurement
Authors: Zhang Long , Yang Jian Jun , Zhang Jun
Published: November 2012

Model ice-shape measurement is an essential part in the icing test in wind tunnel. The principle investigation of camera calibration and image processing technology based on OpenCV library which apply to ice-shape measurement in wind tunnel is presented in this paper. A kind of software with perfect function and good reproducibility was successfully developed. Ice-shape measurement test was conducted in wind tunnel and the application of OpenCV library in image post-processing was proved to be practical. This program can also be effectively used in aero-optics research, model attitude measurement and model deformation measurement in wind tunnel.
Circles Detection in Images by Using of Coarse-to-Fine Search Technique
Authors: Fu Hu Dai , Wang Hua , Gao Jin Gang
Published: November 2012

In the automatic production, the application of machine vision technology on image pattern recognition is an important task. Realistic image is composed of these basic units such as straight lines, circles and ellipses. But the actual images usually contain noise and other interferences. So the images will have some discontinuous modes. Hough transform is commonly used to detect straight lines, circles or other parametric patterns in noisy images. In practical application, Hough transform requires a large amount of storage space and computation. In the paper, it proposed an efficient coarse-to-fine search technique to reduce the storage and computing time of circle detection in image. Variable size image and accumulated matrix are used to reduce the required amount of computation and storage for Hough transform. It shows the parameter convergence speed and precision by using different iterative algorithms. The experimental results show that the coarse-to-fine search technique is very suitable for circle detection having time constraints.
Detecting the Crack of Brake Disc of Urban Rail Vehicles
Authors: Yang Jian Wei , Li Jun Peng , Li Jie
Published: November 2012

To develop a detective method of the crack within brake disc, digital image processing technology is applied, which based on the research on the characteristics of the crake within brake disc of the urban rail vehicles. The detective method could be divided into 3 procedures. Firstly the method is applied to preprocess the collected images, such as filtering and enhancement; then threshold segmentation and edge detection is combined to extract the crack; finally do post-processing on crack using the morphological knowledge, obtaining its geometric characteristic of the crack.
The Application of Ultrasonic Flaw Detection Technology in the Hydraulic Cylinder Production Process
Authors: Shi Li , Wan Zhou , Xiong Xin , Tan Jia Jun , Li Fei
Published: November 2012

This paper discusses about the methods of ultrasonic nondestructive testing applied in the hydraulic cylinder production process; represents how to detect the defects of the raw material of cylinder barrel such as bubbles, cracks, impurity and test the steel tube thickness with the principle of ultrasonic thickness measurement; introduces how to select raw materials through the measured thickness, detect the defects in the machining process and implement preliminary qualifying examination for assembled hydraulic cylinder. The actual application shows that the method can improve the qualification of hydraulic cylinder production effectively.