bluuebunny/crossref_metadata_2025 huggingface dataset:
Improvement on Temperature-Sensing Property of Low-Density Polyethylene Based PTC Composites with Static Magnetic Field Treatment
Authors: Han Bao Zhong , Ma Feng Lian , Li Chang Ming
Published: December 2011

A stable magnetic field was applied during hot press molding of low-density polyethylene (LDPE)/carbon black (CB)/ carbon nanotube (CNT) composites and HDPE/CB/nickel powder composites. The effect of magnetic field treatment on the temperature-sensing property of LDPE-based positive temperature coefficient (PTC) composites was investigated. Experimental results indicate that the magnetic field treatment can lead to an alignment of CNT and nickel powder in LDPE along the direction of the applied external magnetic field. The alignment of these filler particles can endow the composites with low room-temperature resistivity and high PTC intensity when the concentration of CB is decreased. The alignment also can significantly improve mechanical property and processability of the composites. Compared with CNT, nickel powder with strong magnetism has more sensitive response to external magnetic field and is much easier to align in LDPE. Addition of nickel powder is beneficial for developing PTC composites with excellent comprehensive properties.
Removal of Reactive Blue (RB2) from Aqueous Solution by Chitosan/Diatomite Biocomposite
Authors: Chen Yi , Tang Zhi Ru , Wen Yue , Xu Chao , Li Ling , Zhou Qi
Published: December 2011

The adsorption behavior of Reactive Blue (RB2) dye from aqueous solution on chitosan/diatomite biocomposite adsorbent was studied. The effects of biocomposite adsorbent ratio and pH on removal of RB2 were examined, and optimum experimental conditions were identified. Biocomposite adsorbent had the largest adsorption efficiency when the ratio was 10 wt%. The maximum percentage removal of RB2 was 96.36% which obtained at pH 4.0. Adsorption equilibrium showed adsorption amount of RB2 improved with increase in the amount of NaCl, indicating that the addition of inorganic salt was an advantage of the removal of RB2.
Research on Technology of Catalyzed Oxidation Desulphurization with Manganese Sand Fixed Bed
Authors: Guo Yi Fei , Li Chang You , Song Feng Ming
Published: December 2011

In this article, technology of catalyzed oxidation desulphurization with manganese sand fixed bed was employed to conduct the experiment of catalyzed oxidation desulphurization for unhairing alkali swelling wastewater in leather making, and the catalysts of packings such as manganese sand, dolomite, and coal gangue were used and their performances were compared with each other. The study indicated that the manganese sand has the characteristics of stable and effective process in comparison with several present domestic and foreign catalyzed oxidation methods.
Study on Curing Characteristics of Low-Toxicity Urea-Formaldehyde Resin
Authors: Wang Shu Min , Shi Jun You
Published: December 2011

Curing characteristics of low-toxicity urea-formaldehyde (UF) resin in different curing system were studied by differential scanning carlorimetry (DSC). Test results showed that the initial orterminal temperature and activation energy needed of curing reaction for low-toxicity UF resin were different in different curing system. The initial temperature of curing reaction for low-toxicity UF resin and activation energy were the lowest, and exotherm was most under curing system C, which showed the acceleration of curing system C on low-toxicity UF resin was best. The appropriate curing system can be optimized and applied for hot-press process in practical production by means of DSC to investigate curing characteristics of low-toxicity UF resin.
Synthesis and Properties of a New Type Diarylethene Bearing Benzo[b]thiophen Aryl Unit
Authors: He Shang Hua , Pu Shou Zhi , Cui Shi Qiang
Published: December 2011

A new type photochromic diarylethene, 1-(2-methyl-3-benzothiophenyl)-2- [2-methyl-5-(3,5-difluorophenyl)-3-thienyl]perfluorocyclopentene (1o) was synthesized, and its photochromic and fluorescent properties were investigated. This compound exhibited reversible photochromism, changing from colorless to pink after irradiation with UV light both in solution and in PMMA amorphous film. In addition, the fluorescence spectra of diarylethene 1o evidently depended on the concentration in hexane.
Influence on Hydrogen Evolution Properties of Carbon Supported PtCu-LaOx Membrane Electrode by Aftertreatment
Authors: Yang Bin , Huang Neng
Published: December 2011

In order to reduce production cost of making H2, one of the key points was to reduce Pt loading in Pt/C catalytic electrode. In our study, a new type of Pt/C membrane electrodes, PtCu-LaOx/C composite structure, was manufactured by Ion Beam Sputtering (IBS) technology. These membrane electrodes were treated by different annealing temperature in vacuum furnace, and by different time in different concentration H2SO4 solution. The hydrogen evolution properties of these electrodes were tested by tri-electrode system, and were calculated results of their exchange current density (i0), decomposition voltage (Ed) and active specific surface area (ESA). It was found that PtCu-LaOx composite membrane electrodes with Pt loading less than 0.045mg•cm-2 (the electrode area) undergone treatment, whose Ed, i0 and ESA was -0.264(V vs SCE), 4.111mA•cm2 and 75.8926m2•g-1 respectively in balanced condition.
The Discussion of Plan about Water Conservation and Afforestation of Xiaanxi Artificial Aggregate Production System in Three Gorges Project
Authors: Xia Zhen Yao , Xu Wen Nian , Chen Jun Ling
Published: December 2011

The Xiaanxi artificial aggregate production system in Three Gorges Project is the largest one in the world by now. In the process of quarrying, the problems of serious water & soil erosion and primary ecological system injury causing by excavation and dreg have not been solved. This paper analyses the site condition of the region, and basing on it, discusses the plan of water conservation and afforestation on quarry slope, stockyard platform and tailing-dump slope. Synthetically applying different methods and technologies, it would be able to achieve the efforts of conserving water and soil as well as good ecological landscape.
The Influences of Main Ingredients of the Reclaimed Water on Calcium Carbonate Scale in Recycling Cooling System
Authors: Yue Guan Hua , Shang Li Min , Wang Li Ping , Feng Li Li
Published: December 2011

The main risk of reclaimed water reused in industry is to control fouling. The main ingredients in reclaimed water form the chemical scale which is one of the main components of the fouling in the recycling cooling system. The main chemical scale of reclaimed water is carbonate scale (calcite). In this paper, by using the actual reclaimed water which reused as make-up water in Beijing Thermal Power Plant to simulate the 4 times concentrate ratio recycling water to study the influence of main ingredients of reclaimed water such as pH，soluble silica, the most content of anions and cations on carbonate scale. The experimental results show that pH, soluble silica, calcium ion and alkalinity have greater influence on scale inhibition, but magnesium ion, chloride ion and sulfate ion have smaller influence on scale inhibition.
The Relationship between Furized Gypsum Fly Ash Three Constituent Mixture Subtle Structure and Performance
Authors: Sun Jia Ying , Gu Xin
Published: December 2011

The paper aims to study the influence of furized gypsum fly ash three constituent mixture subtle structure to performance by analyzing furized gypsum fly ash three constituent IR, SEM, X-ray phase and DTA. The results show that the reason why furized gypsum fly ash three constituent has the characteristics of high strength in the early stage and good endurance quality is that furized gypsum fly ash concrete has the double actived effect of alkali-activated and sulfate-activated. The development of sclerotium strength mainly relies on ettringite and hydrated calcium silicate gel. During the process of hydration, ettringite and CSH gel hydration increase continuously, hardened structure becomes dense and strength continues to increase.
Magnetic and Transport Properties of the Double Perovskite Sr2FeMnO6
Authors: Cui Lei , Yang Li Juan
Published: December 2011

The double perovskite Sr2FeMnO6 has been synthesized by the solid-state reaction method. X-ray diffraction and subsequent Rietveld refinement confirm that Sr2FeMnO6 has the double-perovskite structure with a cubic cell (a=7.726 Å) and space group Fm3m (No. 225) . The appearance of the superlattice reflection (111) indicates that Fe and Mn atoms alternatively occupy the center of oxygen octahedron in an ordered way. Based on magnetization hysteresis curve and ESR measurements, a ferrimagnetic to paramagnetic phase transition for the double perovskite Sr2FeMnO6 was observed, and the Neel temperature was determined to be TN ~475K. In paramagnetic phase above TN, the value of gyromagnetic factor was determined to be very close to 2.
Mechanical Properties of a Sandwich Construction Material with Paper Honeycomb Core
Authors: Han Chao , Wang Wei Hong , Tan Hai Yan , Gao Yan Ming
Published: December 2011

In this paper, sandwich construction was made up of wood surface sheet and paper honeycomb core. Some cores were impregnated with phenolic resin. Compared to untreated honeycomb materials, impregnated honeycomb core greatly improved the mechanical properties of sandwich construction composites. The results of the study showed that, sandwich construction with phenolic resin treated honeycomb core had higher bonding strength than those bonded with isocianate resin. With the increasing of honeycomb core thickness, sandwich composite material decreased in flat pressure strength, side pressure strength, and flexural properties. The results we got in this research would provide a very good reference to the application of sandwich construction with honeycomb core.
Modification and Characterization of Leather Superfine Powder
Authors: Ding Zhi Wen , Ma Zhao Guo , Cheng Zheng Ping , Li En Hong
Published: December 2011

Stable leather superfine powder suspension was got by superfine powder of leather solid wastes, maleic anhydride(MAH) and acrylic acid(AA). The best MAH、AA modifying conditions with grafting ratio as index were discussed by orthogonal test according L9(34) factor levels, and the results show that modified productsⅠis got by the total amount of MAH account for 50% of the amount weight of leather superfine powder at 80°C for 3 hours in the solution of N,N-dimethyl formamide (DMF). The MAH modified products was filtered and washed with water to reserve, and then was further modified by AA and MA being designed orthogonal test according L9(34)factor levels for optimum conditions with grafting ratio as index. The best modification conditions were as follows: ammonium persulfate(APS) as the initiator, the mass of initiator accounted for 2% of total weight of monomers , the volume ratio of AA and MA was 5, and the reaction temperature was 90 °C for 3 hours in 12% aqueous solution. The monomer grafting percentage of the products was 37.8%. The product was characterized by infrared spectroscopy (IR) and Size analyzer.
Multi-Objective Optimization of Actuator Locations and Numbers for Piezoelectric Intelligent Trusses Based on Genetic Algorithm
Authors: Zhang Jing Jun , Zhang Shi Jun , He Li Li , Gao Rui Zhen
Published: December 2011

The locations and number of actuators in piezoelectric truss is very important. The best number and locations of actuators can make truss node displacement minimum. Based on the function of truss node displacement, this paper analysis the axial force of every bar of intelligent truss, and deduced the piezoelectric truss node displacement, and optimized the location and number of truss using genetic algorithm (GA). The results of the example show that the proposed method is effective.
New Rural Dwelling Construction Shouldn't Abandon our Traditional Culture
Authors: Nie Guo Ping
Published: December 2011

Chinese traditional dwelling has its abundant connotation. In terms of architecture, it plays an important role as a reference to the Construction of New Rural Dwelling. However, with the farmer’s blind pursue of city life and the production of the Standard construction products, the traditional dwelling’s culture is gradually abandoned, which causes the debility of the regional features. The government should pay high attention to the problem of how to inherit the traditional culture in the Construction of New Rural Dwelling. They should also strengthen the guidance to the farmer’s new concept and combine the modern functions of dwelling with traditional style properly, plan and construct the New Rural Dwelling according to its local conditions.
Numerical Simulation on Framed Anti-Sliding Piles
Authors: Qian Tong Hui , Ding Hong Xing , Cheng Zhou Bing , Chen Fang
Published: December 2011

As a new bracing structure, the framed anti-sliding piless based on spatial framework structure, which have the advantages of less displacement in the top of the piles and large anti-force, are developed as a new retaining structure, and can be used to reduce the piles deformation. However, the previous calculation models of double-row piles ignored the deformation coordination action between linking beams and ring beams, the interaction between piles and beams. Further more the calculation results based on the models are not accurate enough. In this paper, a spatial force model of the framed anti-sliding piles is presented. Taking framed anti-sliding piles as a single-layer multi-span frame affected by piles, beams and soils, the spatial synergic interaction between top ring beam and linking beam, as well as the affection of soil-arch on the frame are analyzed. The horizontal displacement in front of the framed anti-sliding piles and distribution of axial force and moment of piles are studied by Finite element method. The results reflect commendably the stress and distortion character of the framed anti-sliding piles. Finally, some rules about the pile-beam-soil interaction in the pile structure are summarized.
Prediction of Porosity of Porous NiTi Alloy from Processing Parameters Based on SVR
Authors: Yan Qi Sheng
Published: December 2011

The regression principle of support vector machines (SVM) based on the statistic learning theory is introduced and mathematical model combined with grid search and Leave-one-out cross validation (LOOCV) which is used to predict the porosity of porous NiTi alloy from processing parameters is established by support vector regression technology. In this model, temperature, particle size and green density are as input parameters and porosity of reacted products is as output paramater. The results show that the relative maximum predicting error is 0.1% under the condition of using a small quantity of samples to build the mathematical model, and the predicting precision of SVR model is obviously better than that of BP neural network model. It is suggested that SVR is an effective and powerful tool for predicting porosity of porous NiTi alloy.
Research on the Relationship between Humanity and Machinery
Authors: Luo Jian Guo , He Mao Yan
Published: December 2011

Humankind simmered with limitless appetency but never satisfied entirely, the weakness of humanity is too much appetency, whether for human’s survive or for development. The process of making tools is the result under the action of humanity, drived by natural attributes and free attributes of humanity, on one hand, drived by internalized natural attributess of seeking for safety, comfort and self-realization, and exterior natural attributess of lazy, jealousy and selfish, humankind devote themselves to the pursuance for physical and psychic wealth, the individual interests realized under the sake of realization of group’s interests. On the other hand, in view of the fact that the human society exist in country and nationality, whether individual or groups dominated by free attributess of humanity, lead the development of each industry through law and guild regulations, as well as the development of machinery included. The development of machinery is a mirror of human’s development history, machinery is the historical result of the revolution of production tools, it is the arm to change humankind and the world, it’s appearance, renovation and disuse as a reslult of humanity, it include the characteristics and contents of humanity, it represent the weakness and mightiness of humanity.
Status, Problems and Countermeasures of Mine Shaft Wall Rupture Mechanism
Authors: Jing Lai Wang , Zhou Jun Wei , Ye Li Ping , Zhao Ke Xiu , Xue Xue Gui , Hao Peng Wei
Published: December 2011

The rupture and deformation of Shaft wall in the vertical topsoil in coal mining, which appears on the common and also is relatively unique phenomenon in China. Today with the increasing of the deep and extra deep Shaft, the destruction of the Shaft wall brings us more difficult task. To solve this basic problem need to figure out the shaft wall rupture mechanism. This paper discusses the current research status of the shaft wall, existence problems and content of the research. We did a lot of engineering investigation and analysis. Focus on the structure design of the wall, the main factors of influence rupture, mechanical characteristics of side wall and etc. Summarizing the shortage that in the study of the shaft wall rupture mechanism, making a supplementary . At the same time, the corresponding relationship between the vertical pressure with the groundwater level, between the groundwater level with vertical additional force. Maximum value of the vertical additional force . The inner link between vertical additional force with vertical pressure, with the depth of surface soil, with the diameter of the mineshaft, the thickness of side wall, the measures for preventing vertical shaft flood. From the five aspects, which reveal the content, analysis the object of study, and show the important significance of research.
Stress-Based Health Assessment of Composite Open-End Cylindrical Laminated Shell with Stepped-Lap Repairs
Authors: Xu Jian Xin , Dou Chen , Li Ding He
Published: December 2011

A three-dimensional finite element model was created in PATRAN to perform stress distribution into the influence of disbonded adhesive in stepped-lap repairs of composite open-end cylindrical laminated shell. Extracted and studied the value of the stress on every ply, and every node, ordered by the X coordinate. A study has been presented that the rim of patch is greatly affected by disbonded types, however, the central area of the patch is less affected relatively, especially between ±20mm, that the diameter is equal to the diameter of the damage, the stresses are flatly changed. And for the whole model, the maximum is in the sixth layer, so that the internal area is the most easily to be damaged. Therefore, it should be force on this special area in experimental health assessment such as using piezoelectric elements. It could provide certain maintenance basis for the future practical repair.
A Computer-Aided Time Reversal Process for Structural Damage Diagnosis
Authors: Lee Usik , Jun Yong Ju , Park Il Wook
Published: December 2011

A computer-aided time reversal process (CTRP) is proposed for the structural damage diagnosis. In the standard time reversal process (STRP), both forward and backward processes are conducted by the measurement. However, in the proposed CTRP, the forward process is conducted by the measurement while the backward process is conducted by the computation. As a benefit of the computer-based backward process, the unwanted Lamb wave modes which do not carry damage information can be readily removed from the signals reconstructed at the input excitation point. The reconstructed signals refined in such a way can make the signal processing for the damage diagnosis more efficient and easier.
Study of Dual-Alkali on Sintering Flue Gas Desulfurization
Authors: Zhang Yu Zhu , Xu Ying
Published: December 2011

Combining with the characteristics and control methods of sintering flue gas, several common methods for flue gas desulfurization(FGD) and development trend of desulfurization technology were described in this paper. According to characteristics of sintering flue gas and selection principles, dual-alkali method was used in the FGD. Desulfurization process, basic principle and characteristics of the process were studied in detail. By contrast test, the effect of concentration of the desulfurization, flue gas flow and surface active agent on the desulfurization efficiency was investigated in detail through calculating the pH value of the solution before and after desulfurization reaction.
Study on Relationship between Building Material and Building Form
Authors: Guo Chun Yan , Wei Da Ke , Guo Chun Ying
Published: December 2011

Different materials will offer different physical property and visual effects, where the building form is the result of adapting to the material and showing its effect. This paper made some suggestions on selecting and applying materials involved in building design in terms of structure stress, making technique and artistic appearance. This method is a return to the essentials of building, and a key direction for building innovation.
Surface Modification of Natural Rubber Latex Film by N-Vinypyrrolidone Graft Copolymerization
Authors: Sun Qin , Yu He Ping , Zeng Zong Qiang , Lu Guang , Luo Yong Yue
Published: December 2011

The surface modification of natural rubber (NR) latex film by argon plasma pretreatment and subsequent UV-induced graft copolymerization of N-vinypyrrolidone (NVP) was carried out to improve the hydrophilic behavior. The effects of plasma pretreatment time and UV irradiation time on the graft yields were studied. The peroxide functionalities formed by the oxidations in air after plasma pretreatment are the activated species for the subsequent UV-induced graft copolymerization of NVP. ATR-FTIR and XPS analyses indicate that the PVP molecules have covalently bonded onto the surface of NR latex film. The argon plasma pretreatment time of 2min and UV irradiation time of 10min are the proper conditions for the graft polymerization of NVP onto NR latex film, which can reduce the water contact angle value of NR latex film from 95oto about 57o.
Synthesis and Fluorescence Switch of a Photochromic Diarylethene Bearing Benzene and Pyridine Unit
Authors: Liu Ming , Liu Gang , Cui Shi Qiang
Published: December 2011

A new photochromic diarylethene compound, 1-(2-methylphenyl)-2-[5-(2-pyridine)-2-methyl-3-thienyl]perfluorocyclopentene (1a) was synthesized. its photochromic and fluorescent properties have been investigated in detail. Meanwhile, fluorescence properties in different solution have also been discussed. The results of the research demonstrated that it has shown good photochromic behavior and relatively strong fluorescence in different solution and in PMMA at room temperature. Finally, photo-mode rewritable optical storage using 1b was performed. The images demonstrated that the compound can be used as optical storage material.
Synthesis of a New Red Long Persistent Phosphor Sr2ZnSi2O7: Eu3+, Lu3+ via Sol–Gel Method and Investigation of its Luminescence
Authors: Lin Hua , Xu A Xiao , Chen Guo Liang , Zheng Zi Shan , Lin Heng , Chen Bi Sang , Huang Ling Feng , Guo Hong Xu , Xu Yan
Published: December 2011

A novel red long persistent phosphor of Sr2ZnSi2O7: Eu3+, Lu3+ was successfully synthesized with sol–gel method. Its properties were systematically characterized by X-ray diffraction(XRD), luminescence, afterglow decay curves and thermoluminescence (TL) spectra. The red phosphor showed one emission peak at 616.9nm, which is attributed to the typical 5D0–7F2 transition of Eu3+ ions as luminescent centers in Sr2ZnSi2O7 host. Lu3+ as a sensitized ion played an important role in enhancing the long afterglow performance of Sr2ZnSi2O7: Eu3+, Lu3+. Under UV light irradiation, this phosphor showed obvious red long-lasting phosphorescence that can be clearly seen with naked eyes in a dark room for over 20s after the irradiation source has been removed. Thermoluminescence (TL) measurement showed that Lu3+ co-dopan can reduce the trap depth of the title phosphor to obtain suitable ones.
Synthesis, Characterization and Properties of a New Octupolar Molecules with Active Hydroxyl Groups
Authors: Qi Xiao Yun , Hu Quan Yuan , Wang Shi Min , Yang Fei , Yu Ping
Published: December 2011

An organic octupolar molecule with active hydroxyl groups was designed and synthesized. The structure and propertie of the organic molecule was characterized by IR,1H MNR, UV-vis and DSC-TG. The maximum absorption wavelength of the compound is 439 nm. The critical wavelength is below 710 nm. The compound is thermally stable with the decomposition temperature of 401°C, and consequently could be considered to be a better choice for the preparation of NLO material.
Synthesis, Fluorescence and Kinetic of a New Photochromic Diarylethene Bearing Condensed Aromatics Moiety
Authors: Wang Ren Jie , Li Wei Bin , Liu Wei Jun , Liu Gang
Published: December 2011

A new photochromic diarylethene compound [1-(2-methyl-1-naphthyl), 2-(2-methyl-5-(4-dioxolanephenyl)-3-thienyl)]perfluorocyclopentene 1o was synthesized and its photochromic properties, fluorescence switch and kinetic properties were investigated in detail. Upon irradiated UV light it changes from colorless to red both in solution and in PMMA amorphous film. In addition, the kinetic experiment indicated that the cyclization/cycloreversion process belong to zeroth and first order reactions, respectively. Finally, the fluorescence spectrum of diarylethene 1o was decreased remarkable along with the cyclization reactions.
Synthesis, Photochromism Properties of a Hybrid Diarylethene Based on Hydroxyl Group
Authors: Jiang Duo Hua , Liu Wei Jun , Cui Shi Qiang , Liu Gang
Published: December 2011

A novel unsymmetrical diarylethene derivative 1-[2-methyl-5-(3-trifluoromethylphenyl)-3-thienyl]-2-[2-methyl-5-(4-hydroxylphenyl)-3-thienyl]hexafluorocyclopentene (1a) was successfully synthesized. The properties of the compound, including photochromic and fluorescence properties of the diarylethene were also investigated systematically. The results showed that this compound exhibited reversible photochromism, undergoing reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light both in solution and in PMMA film, and its absorption maxima were observed at 593 nm in methanol and at 598 nm in PMMA amorphous film, respectively, upon irradiation with 297 nm UV light. In methanol solution, the open-ring isomer of the diarylethene 1 exhibited relatively fluorescence at 569 nm when excited at 360 nm.
Synthesis, Properties and Application in Optical Recording of a New Diarylethene Bearing an Isoxazole Unit
Authors: Li Hui , Pu Shou Zhi , Liu Wei Jun
Published: December 2011

A new photochromic diarylethene bearing an isoxazole unit has been synthesized, namely {1-(3,5-dimethyl-4-isoxazolyl), 2-[2-methyl-5-(3-methoxyphenyl)-3-thienyl]}perﬂuorocyclopentene. Its properties, including photochromic reactivity both in solution and in PMMA film, photoconversion ratio at photostationary state, fluorescence and optical recording property were investigated. It underwent reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light both in hexane and in PMMA. The isomeric compound also functioned as a ﬂuorescence switch by photoirradiation. Using this dithienylethene as optical storage was performed successfully.
Taiwan Air Force Logistics System of Research Governance
Authors: Huang Min Chuan , Wu Chao Yen , Tzeng Jang Ruey
Published: December 2011

Taiwan Air Force attempts to dress the century into the military logistics fleet management information governance challenges and solutions for the problem, I explore the Department of Defense and the Air Force General Command of the face when the United States, China, Taiwan triangular relationship and interaction development, I Taiwan, F100, F104 old multi-session retreat, an opportunity to the international situation easy to help the world's consumption of the United States, IDF130 French Mirage 2000 aircraft with 60 U.S. F16A / B fighters, 150. 1979 to 1996 while the Air Force replacement of old aircraft and the Army a total of 340 aircraft and five companies. Up to five kinds of aircraft types, there are cross-generational, cross-type, cross-border differences, and my task, repair, supplies, etc. have a direct long-term implications. Was the need to actively seek foreign buyers, so the secret meaning to contact the French Mirage 2000 fighter procurement, Taiwan also has four planes incompatible and independent logistics system? At this point the core operation of the Air Force logistics management, and supply sources and the implementation of cross-system benefits, there are still logistical bar code conversion, how to face the army in 1990, the Air Force effective governance, effective logistics to enhance the Air Force repair capability to ensure air superiority over the Taiwan Strait security and integration of armed forces combat capability. We provide this experience for the successful teaching of business management related discussions to enhance the graduate student's thinking and decision-making capacity.
The 3-D Numerical Simulation of Heat Transfer Process of Finned Copper Tube
Authors: Zhong Jian Hua , Jiang Li Ming , Feng Kai
Published: December 2011

In this article, finned copper tube used in the central air conditioning was acted as the discussed object. According to the combination with actual processing and theoretical calculations, Five finned tube was selected with typical structural parameters, and established their entity model using Pro/E, then the heat transfer process of finned tube was simulated through the ANSYS, the effect of the fin height, fin thickness and other structure parameters to the heat transfer enhancement of finned tube was researched. Meantime the efficiency of the heat transfer under different convection heat transfer coefficient was also studied.
Design of Control System for Detection of Sub-Nanometer Wood Flour Based on Neural Network
Authors: Guo De Zhi , Yang Chun Mei , Ma Yan
Published: December 2011

In this paper, the detection of sub-nanometer wood flour based on neural network control, how to improved the quality of wood flour is proposed. In the analysis of the advantages of neural network controller, as the auxiliary controller for the PID controller, and improving the control effect of the system. With the contrast of the experimental results, illustrates the quality of the sub-nanometer wood flour has been improved by the neural network control.
The Influence of Heat Treatment on Microstructure and Mechanical Properties of Cr15 Super Martensitic Stainless Steel
Authors: Liu Xin , Zhao Kun Yu , Zhou Yong Heng , Ye Dong , Jiang Wen , Yong Qi Long , Su Jie
Published: December 2011

The microstructure and mechanical properties of 15Cr super martensitic stainless steel after different heat treatments were studied. The results show that the structures of the steel after quenching are lath martensite. With the raising of the quenching temperature, the original austenite grain size increases and the martensite platelet gradually coarsens. The microstructures of the tempered steel are tempered martensite and reversed austenite dispersed in the martensitic matrix.
The Stress and Displacement Analysis of the Cut-Off Wall for the Deep Overburden Dam
Authors: Zhang Bo
Published: December 2011

The Duncan-Chang nonlinear constitutive model is used to carry out a three-dimensional finite element analysis of Xia Ban Di deep overburden dam with clay core. The regularities of the horizontal displacement, vertical stress and stress level for the cut-off wall are studied in this paper, and the paper provided reference for the dam stability and anti-seepage treatment of the cut-off wall with deep overburden.
The Test Methods and Application Prospects of Cellosilk Preparation with Physical Methods
Authors: Yang Chun Mei , Ma Yan
Published: December 2011

This paper proposes a idea of microfibril preparation with physical methods. Through the design of wedge structure of experiment table and with the condition of the dynamic pressure jet putting the soften the micro wood fibers to cell wall by squeezing and shearing and torsion and so on and forming the microfibril test specimen. This paper describes the development of foreign microibrils of the status, pointing out the significance of microfibril preparation and application prospects. And to develop the corresponding technical route and to analyze the feasibility of microfibril preparation.
Zr4+ Co-Dopant Enhancing Afterglow Green Phosphor of Zn2SiO4: Mn2+
Authors: Chen Bi Sang , Chen Li Fang , Lin Hua , Chen Guo Liang , Zheng Zi Shan , Lin Heng , Guo Hong Xu , Chen Zhong Hui , Huang Ling Feng , Zhou Wen Hua
Published: December 2011

A new afterglow green phosphor of Zn2SiO4: Mn2+, Zr4+was prepared by high temperature solid-state method. Effects of various preparation techniques on the crystal characteristics, luminescent properties and afterglow performance have been investigated systematically. The phosphor powders were further investigated by photoluminescence excitation and emission spectra (PL) and brightness meter. The results showed that the PL of Zn2SiO4: Mn2+, Zr4+was observed in the green region due to transitions from the4T1g(G) to the5A1g(S) configuration of the Mn2+ions. This phosphor showed obvious long-lasting phosphorescence that could be clearly seen with naked eyes in a dark room for more than 2h after the irradiation source has been removed. The possible mechanism of this phosphor was also investigated based on the TL measurements.
The Air-Kiln Drying Technology Research on Australian Eucalyptus regnans Board
Authors: Xu Kai Meng , Tu Deng Yun , Peng Peng Xiang , Guo Qiong , Yun Hong
Published: December 2011

This paper researched on Australian Eucalyptus regnans drying properties by 100°C Test Method, also researched 25mm-thick boards dried by air-kiln drying schedule. The result indicated that the species belongs to refractory wood when drying, with checks and collapse defects that develop easily. In order to improve the drying quality, we adopted the method of first air-drying the moisture content (MC) to four different ranges and then kiln-drying. The two phrase air-kiln drying schedule concluded that the drying cycle of 25mm-thick Eucalyptus regnans board from 76.34% to 13.11% MC was 33.5 days, and the drying quality of visible defect met the requirement for the first level of the Chinese national standards.
A Combined Image Compression and Encryption Scheme
Authors: Yang Hua Qian , Pu Chang Jiu , Hu Fei , Peng Tao
Published: December 2011

In the paper, a novel combined image encryption and compression scheme is proposed. It performs encryption before compression. Making use of the properties of discrete wavelet transform (DWT) and Set Partitioning in Hierarchical Trees (SPIHT) coding, confusion is restricted to the interior of single subband image itself and so image details are retained. The proposed algorithm possesses a good visual quality of the reconstructed image and a high encryption speed.
A Two-Step Resolution for Preparing Enantiopure (S)-Ethyl Nipecotate
Authors: Tang Feng Xiang , Li Yun Bo , Meng Chun , Zhao Xue Qing
Published: December 2011

Enantiopure nipecotic acid or ethyl nipecotate are key precursors for synthesizing a variety of pharmaceutically important compounds. In this work a two-step resolution of racemic ethyl nipecotate was developed to prepare enantiopure (S)-ethyl nipecotate. In the enzymatic resolution step, six lipases were screened for their ability to enantioselectively hydrolyze rac-ethyl nipecotate in t-butanol at 30°C and Novozym 435 was found to be the most effective. Solvent effects on the hydrolysis conversion and enantioselectivity showed that water was the optimum medium. When rac-ethyl nipecotate concentration was kept at 0.5M, the hydrolysis under optimum conditions (lipase loading 5mg/mL, phosphate buffer pH 7.0, reaction temperature 30°C, reaction time 6h) afforded 68.9% ees and 69.5% eep at 49.8% conversion. Novozym 435 preferentially hydrolyzed (R)-ethyl nipecotate over (S)-enantiomer. A parallel reaction model was suggested and found to fit the experimental initial rate data very well. (S)-enriched ethyl nipecotate was further resolved using (D)-tartaric acid and enantiopure (S)-ethyl nipecotate (98.5% ee) was acquired in 84.3% yield. The overall yield of enantiopure (S)-ethyl nipecotate by this two-step resolution was up to 36.0%.
Effect of Current Intensity on the As-Cast Structure of Cu-3.2%Ni-0.8%Si Alloy during Low Frequency Electromagnetic Casting
Authors: Zhang Hai Tao , Li Bao Mian , Cui Jian Zhong
Published: December 2011

The effect of electromagnetic field on the solidification structure of Cu-3.2%Ni-0.8%Si alloy had been investigated in this paper. The results show that applying electromagnetic field during the solidification of Cu-3.2%Ni-0.8%Si alloy can refine as-cast structure and δ-Ni2Si phase. The morphology of δ-Ni2Si phase changes from coarse massive shape to fine dotlike shape. The above-mentioned effects become more obvious with the increasing in current intensity.
Analysis on the Operating Characteristics of Solar Water Heater in Combination with Air Source Heat Pump Water Heater
Authors: Jiang Ai Guo , Wang Xiao Zhong
Published: December 2011

Solar water heater cannot supply hot water in cloudy and raining days alone. It in combination with air source heat pump water heater (ASHPWH) is a good choice. The performance of the two kinds of water heater is affected by the water temperature. It is important that the ASHPWH operate at a right temperature of the water. A solar water heater with 4m2 flat-plate collector assisted by a 1.5kW ASHPWH is studied in this paper. The results show that both the collector efficiency of the solar water heater and the COP of the ASHPWH system decreases as the water temperature increases. The highest and lowest collector efficiency of the solar water heater are 54.4% and 45.6% respectively. The COP of the ASHPWH system ranges from 6.48 to 2.61 as the water temperature increases. Operating sequences of these two kinds of water heater affect solar energy utilization ratio and the power input of the ASHPWH system.
Bioinformatics Analysis and Characteristics of Ser/Thr Protein Kinase Encoded by UL13 Gene of Duck Plague Virus
Authors: Hu Xi Xia , Cheng An Chun , Wang Ming Shu
Published: December 2011

This report showed some physicochemical properties and structural features about DPV-UL13 protein predicted by some software and online tools. The online analysis of the physicochemical properties demonstrates that the protein has thirty-four potential phosphorylation sites when the threshold of prediction score is above 0.5 and both the signal peptide and the transmembrance region are not found. In addition, the protein has hydrophilic amine acid districts more than hydrophobic districts and subcellular localization largely locates at mitochondrial with 43.5%. The secondary structure results revealed that random coils dominated among secondary structure elements followed by alpha helix and extended strand. The phylogenetic tree shows that DPV-UL13 protein has close evolutionary relationship with the genus Mardivirus. And the multiple sequences alignment of UL13 protein in 156-436 sequence among DPV, HSV-1 and Mardivirus genus suggests highly conserved characteristic. These analysis surpports the guess that DPV-UL13 product may be a Ser/Thr protein kinase. All the data will be a basis for the further functional study of the DPV-UL13 protein.
Effect of Fiber Surface Treatment Techniques on Properties of Short Carbon Fiber Reinforced Phenol Formaldehyde Resin/Graphite Composite Bipolar Plate
Authors: Wang Yan Ming , Wang Wei Qiang , Li Ai Ju
Published: December 2011

Research was done on carbon fiber surface treatment techniques on boundary-bonding state and properties of short carbon fiber reinforced phenol formaldehyde (PF) resin/graphite composite. By gas-phase oxidative surface treatment (GPOST)、gas-phase and liquid-phase oxidative surface treatment (GLPOST), carbon fiber and PF resin /graphite matrix is on weak boundary bonding state. The exerted outside stress can not be effectively transmitted, the composite strength is lower than that of PF resin/graphite matrix; By thick nitric acid liquid-phase oxidative surface treatment (TNALPOST) which the nitric acid has high density, fiber and matrix is on relatively weak boundary bonding state, the exerted outside stress can be effectively transmitted and composite strength can be raised on some degree. With carbon fiber content by TNALPOST 3.wt%~ 4.wt% and PF resin content 15.wt%, the composite can meet both the mechanical strength and electrical conductivity requirement on carbon filler/polymer bipolar plate by USA Department of Energy.
Determination on Crystallinity of Ionic Liquids Pretreated Biomass
Authors: Xie Hong Xue , Prausnitz John , Wu Xiu Ling
Published: December 2011

The orthogonal L9 (3)4 method was used to analyze the effect of a few processing parameters on crystallinity of pretreated miscanthus. The optimal conditions were: the miscanthus concentration was 30mg per gram of solvent, the temperature and time for dissolution were 120°C and 2 h respectively, and aqueous K3PO4 was used for precipitation. For these optimal conditions, the crystallinity index is about 41%, significantly lower than that of new miscanthus whose crystallinity index is 64%. A decrease in crystallinity favors efficient hydrolysis of cellulose to sugars that can be fermented to ethanol.
A Numerical and Experimental Study of Composite Plates with Delamination under Compression Load
Authors: Ruan Jiang Tao , Wang Shi Bin , Tong Jing Wei , Shen Min , Aymerich Francesco , Priolo Pierluigi
Published: December 2011

The results on a numerical and experimental study of graphite/epoxy composite plates [03/903]S are presented. Each specimen was firstly impacted by the low velocity with different energy level. Compression experiment based on carrier electronic speckle pattern interferometry (carrier-ESPI) is made for the post-impact composite plate. The finite element method (FEM) is used to gain further understanding of the deformation behavior of impacted specimens. The compressive deformation of various delaminated composite plates are analyzed with software ANSYS to see that the impact parameters and delamination damage data, such as impact energy, maximum impact force and delamination area, affect the deformation fields. In addition, the comparisons between the finite element results and experimental measurements are considered under different compression loads.
Factors Influencing Seed Germination of Sorbus pohuashanensis Hedl
Authors: Yang Ling , Li Yu Hua , Shen Hai Long
Published: December 2011

Seed development traits of Sorbus pohuashanensis are discussed with special regard to factors influencing seed germination. The purpose of this research was to provide additional data for to suggest a method of improving seed germination in S. pohuashanensis. The limiting factors for seed germination are embryo developmental stage, seed coat (naked embryo germination was significantly higher than for intact seeds), seed hydration, and germination temperature. These results infer that for S. pohuashanesis, ptimum germination requires earlier seed collection (before dormancy intensifies), seed hydration sufficient for respiration to take place, and lower germination temperature than room temperature.
Filler Materials Used in Kyphoplasty and Vertebroplasty for Osteoporotic Vertebral Compression Fractures
Authors: Zhang Bin , Dai Min
Published: December 2011

Osteoporosis is the most common metabolic bone disease and the most common cause of fractures in older adults. Vertebral compression fracture (VCF) is the most common complication in patients with osteoporosis. At present, vertebroplasty (VP) and kyphoplasty (KP) are two minimally invasive techniques used to treat osteoporotic vertebral compression fractures. In clinical use, KP and VP have stable and reliable therapeutic effects. However, there are still some complications and issues surrounding KP and VP application, and for long-term clinical follow-up. Thus, it is important to continue to improve the technology of the ﬁller materials used in KP and VP in order to evolve the biomechanical characteristics of the postoperative vertebra, and to reduce the incidence of complications. The ﬁller materials used for both techniques require good biocompatibility, good biomechanical strength and stiffness, and good radiopacity for the ﬂuoroscopy guided procedures. PMMA and new ﬁller materials (calcium phosphate cement, calcium sulfate cement, composite materials) are now available for clinical use. In this review paper, we will focus on the issues and characteristics of these ﬁller materials.
Generalized System for Relaxed Cocoercive and Involving Projective Nonexpansive Mapping Variational Inequalities
Authors: Gu Guang Hui , Su Yong Fu
Published: December 2011

Firstly, the concept of projective nonexpansive mappings is presented in this paper. The approximate solvability of a generalized system for relaxed cocoercive and involving projective nonexpansive mapping nonlinear variational inequalities in Hilbert spaces is studied, based on the convergence of projection methods. The results presented in this paper extend and improve the main results of many authors.
Generate Breath Flow Having Fractal Signal Feature Using Weierstrass Function Combination
Authors: Li Meng Chao , He Zhong Hai
Published: December 2011

Fractal signal feature in breath flow is verified by many articles. So the generate fractal feature have two meanings, one to decrease damage to lung in mechanical ventilation because of natural similar, two to increase similarity in breath simulation used in medical patient simulator. The main feature of fractal signal is self-similar. Some algorithms have been proposed using fractional Brownian motion simulation. In this paper we use Weierstrass function combination to generate fractal signal. The method includes all fractal features and easy to realize in algorithm compared with fractional Brownian motion.
Electronic Structure and Optical Properties of La or In Doped SnO2: First-Principles Calculations
Authors: Chen Chang Peng , Qi Mei Lan
Published: December 2011

Based on the density functional method, the electronic structures and the optical properties for pure and La or In doped SnO2 are comparatively investigated in detail. The calculation results indicate that both the doping of La and the doping of In induce effective reduction of the band gap of SnO2, the impurity elements form new highly localized impurity energy level at the top of the valence band near the Fermi level. The interaction between electrons changed after doping which leads to the change of electrical properties .Meanwhile, red shifts are revealed in both the imaginary part of dielectric function and the absorption spectra corresponding to the change of band gaps
Influence of Contents of Carbon and Phosphorous on the Crumbling Phenomena of Si-Al-Fe
Authors: Zhang Jun , Song Yao Xin
Published: December 2011

SiAlFe ferroalloy is widely used as a strong de-oxidation compound to substitute pure aluminum in the production of iron and steel. However, its wide application is limited by the frequent occurrence of self-crumbling phenomena and accompanied emissions of a small amount of toxic and explosive gases. This paper determined the corresponding affecting factors by primary investigation of SiAlFe ferroalloy. Then the influence of contents of carbon and phosphorous on the self-crumbling was studied. The results showed that samples containing more phosphorous crumbled more seriously and the content of phosphorous was suggested to be less than 0.03 wt %. The change of content of carbon did not affect the crumbling obviously, ranging from 0.1~0.7 wt %.