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基于规则的船体曲面分段空间调度方法

上海交通大学学报 2009年第11期43卷 1709-1714页

作者：王蕾张志英上海交通大学机械与动力工程学院上海200240 同济大学机械工程学院上海200092

基于分解策略,将船体曲面分段空间调度问题划分为一系列分段排序和分段填空过程.分段排序是根据排序规则产生待调度的分段序列;分段填空是对按一定次序进入平台的分段,应用定位放置规则和配置空间理论搜索分段可放置空域,研究采用搭界... 详细信息

基于分解策略,将船体曲面分段空间调度问题划分为一系列分段排序和分段填空过程.分段排序是根据排序规则产生待调度的分段序列;分段填空是对按一定次序进入平台的分段,应用定位放置规则和配置空间理论搜索分段可放置空域,研究采用搭界、剩余加工时间相近搭边等定位规则,确定分段在平台上的位置坐标和开工时间.仿真实验结果表明,该算法在运算结果和运算时间方面优于已提出的三维装箱问题算法.

关键词：船体曲面分段空间调度规则

Study on growth and properties of novel γ-LiAlO_2.substrate

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Science China(Technological Sciences) 2006年第2期49卷 188-193页

作者： ZOU Jun1,2. ZHOU Shengming1, XU Jun1 & ZHANG Rong3.1. shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, shanghai 2.1800, China 2. Graduate {2. of Chinese Academy of Sciences, Beijing 10003., China 3. Laboratory of Solid State Microstructures and Department of Physics, Nanjing {3., Nanjing 2.0093. China 1. shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China 2. Graduate school of Chinese Academy of Sciences Beijing 100039 China 3. Laboratory of Solid State Microstructures and Department of Physics Nanjing University Nanjing 210093 China

Transparent γ-LiAlO2.single crystal has been grown by Temperature Gradient technique. The surface of the wafer annealed in O2.atmosphere at 1100°C for 70 h became opaque and Li-poor phase (LiAl5O8); while, that annealed in Li-rich atmosphere kept transparent and smooth. The full-width at half maximum value dropped to 3. arcsecs when the wafer was annealed in Li-rich atmosphere. That annealed in O2.atmosphere increased to 78 arcsec. Compared with absorption spectra, we can conclude that the 196 nm absorption peak was caused by Li vacancies and the 73. nm peak was caused by O vacancies.

关键词： γ-LiAlO2 crystal, scanning electron micrograph (SEM), absorption spectra.

Thermal Insulation and Strength of Autoclaved Light Concrete

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Journal of Wuhan university of Technology(Materials Science) 2011年第1期26卷 132-136页

作者：杨若冲吴智深 school of transportation Southeast University Institute of Urban engineering Science & Technology Southeast University

The primary objective of this study was to develop an autoclaved light concrete （ALC） material with ultra-thermal insulation property and to investigate the relationship between its physical characteristics and mechanical properties. Through tests of dry bulk density and compressive strength, relationship of physical characteristics and mechanical properties of samples were studied, resulting in a material with ultra-thermal insulation property. Scanning electron microscope （SEM） and energy-dispersive X-ray spectroscopy （EDX） were applied to analyze the micro-morphology and elemental composition of samples. To identify the product phases, X-ray diffraction （XRD） was engaged. The test results showed that compressive strength and thermal coefficient were reduced with the increasing of aluminum powder within the mixtures. As a result the optimal thermal coefficient and compressive strength of samples were improved to 0.061 W/（m·k） and 1.2.MPa, respectively. SEM, EDX and XRD analyses showed that calcium silicate hydrate and tobermorite crystal were main resultant phases.

关键词： autoclaved light concrete ultra-thermal insulation microscopic appearance and phase analysis tobermorite crystal

Tribological Properties of PVA-H Composites Reinforced by Nano-HA Particles

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Journal of Wuhan university of Technology(Materials Science) 2007年第3期22卷 490-493页

作者：吴刚 school of Mechanical engineering Shanghai Jiaotong University

The friction and wear behaviors of tribological mechanical components were studied on a four-ball tester under dry conditions, and the wear mechanism was analyzed by observed worn surface using a scanning electron microscope （SEM）. It was found that the friction and wear properties were improved by the addition ofnano HA particles. The composite containing 1 wt% nano HA had the optimum friction coefficient. It is also found that the addition of nano HA increases the wear resistance of oure PVA-H and PVA-H composites.

关键词： articular cartilage composites wear friction coefficient corrosion-abrasion

Bionic Design and Finite Element Analysis of Elbow in Ice transportation Cooling System

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Journal of Bionic engineering 2010年第3期7卷 301-306页

作者： Dejun Miao~(1,2., Xiuhua Sui~3. Linjing Xiao~3.1. Key Laboratory of Mine Hazard Prevention and Control (Ministry of Education, China), Shandong university of Science and Technology, Qingdao 2.6510, P. R. China 2. school of Architecture, Tsinghua university, Beijing 100084, P. R. China 3. College of Mechanical and Electronic {3., Shandong university of Science and Technology, Qingdao 2.6510, P. R. China [a] Key Laboratory of Mine Hazard Prevention Control (Ministry of Education China) Shandong University of Science Technology Qingdao 266510 P. R. China [b] School of Architecture Tsinghua University Beijing 100084 P. R. China [c] College of Mechanical Electronic engineering Shandong University of Science Technology Qingdao 266510 P. R. China

With the increase in mining depth, mine heat harm has appeared to be more prominent. The mine heat harm could be resolvedor reduced by ice refrigeration. Thus, ice transportation through pipeline becomes a critical problem; typically flowresistance occurs in the elbow. In the present study, according to the analysis of the surface morphology of fish scale, abiomimetic functional surface structure for the interior wall of elbow is designed. Based on the theory of liquid-solid two phaseflow, a CFD numerical simulation of ice-water mixture flowing through the elbow is carried out using finite element *** experiments of pressure drop and flow resistance for both bionic and common elbows are conducted to test theeffect of the bionic elbow on flow resistance reduction. It is found that with the increase in the ice mass fraction in the ice-watermixture, the effect of bionic elbow on resistance reduction becomes more obvious.

关键词： bionic elbow two phase flow ice transportation flow resistance reduction pressure loss

Combinatorial Model Involving Travel Choice,Destination Choice and Route Choice

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Journal of Systems Science and Systems engineering 2001年第4期13卷 425-432页

作者： ZHOU Xi-zhao1, YANG Xiao-guang2.1. Management school, shanghai Maritime {2., shanghai 2.013., China 2. Tong ji {2., shanghai 200092, China Management school Shanghai Maritime UniversityShanghai 200135 China tongji university Shanghai 200092 China

Considering random utility of transportation information, the author develops combinatorial model involving travel choice, destination choice and route choice. It's uniqueness and equivalance are also proved. Finally,... 详细信息

关键词： travel choice destination choice: route choice

A　perspective　analysis　on　municipal　solid　waste(MSW)　energy　recovery　in　China

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Journal of Environmental Sciences 1997年第2期9卷 96-100页

作者： He Pinjing, Shao Liming National Laboratory of Pollution Control and Reclamation, school of Environmental engineering, {2., {3., China

The paper analysed the current situation of municipal solid waste(MSW) quantity and quality in China and the changing tendencies of its composition. Further more, the energy value of MSW was discussed. To the point of the technical and economic aspects, the feasibility of the energy recovery from MSW was also analysed. The conclusion is that the energy can be effectively recovered through a landfill gas utilization process and the energy produced by an incineration process. Through a suitable energy recovery process, it is possible to improve the economic viability of a MSW treatment process.

关键词： perspective analysis energy recovery energy value municipal solid waste(MSW) MSW in China.

Anticoagulation property and security of artificial heart valve material

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Science China(Technological Sciences) 2005年第2期48卷 145-162页

作者： WANG Xianghui1, , LIU Xianghuai1,2., 3. ZHANG Feng2. LI Changrong2. YU Liujiang2. ZHENG Zhihong2. WANG Xi2. JIANG Zhenbin4, CHEN Anqing4 & XU Jingfang3.1. Department of Physics, East China Normal university, shanghai 2.0062. China 2. Ion Beam Lab, shanghai Institute of Mini-system and information, Chinese Academy of Sciences,shanghai 2.0050, China 3. Department of Electronics, school of Information Science and Technology, East China Normal Univer- sity, shanghai 2.0062. China 4. shanghai Cardiovascular Institute, Zhongshan Hospital, shanghai 2.003.0} China 1. Department of Physics East China Normal University 200062 Shanghai China 2. Ion Beam Lab Shanghai Institute of Mini-system and information Chinese Academy of Sciences 200050 Shanghai China 3. Department of Electronics School of Information Science and Technology East China Normal University 200062 Shanghai China 4. shanghai Cardiovascular Institute Zhongshan Hospital 200032 Shanghai China

Heart valve diseases threaten human health. One reliable way to save lives of such patients is to replace the pathologically changed heart valves by artificial ones. Over 2.million patients have received LTI-carbon heart valve’s implantation. However, the thrombosis after the implantation is one of the difficulties that need to be solved. In order to improve the blood compatibility and security of mechanical heart valves, ion beam technology was used to modify the surface properties of the materials. The investigation results have been summarized in this paper.

关键词： artificial heart valve, ion implantation, plasma immersed ion implantation, ion beam enhanced deposition.

Modification mechanism of cerium on the Al-18Si alloy

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Rare Metals 2006年第1期25卷 11-15页

作者： ZHANG Henghua DUAN Haili SHAO Guangjie XU Luoping YIN Junlin YAN Biao school of Materials Science and engineering Shanghai University Shanghai 200072 China school of Materials Science and engineering Tongji University Shanghai 200092 China

The effect of the rare earth cerium （Ce） on the hypereutectic Al-Si alloy under different casting states have been studied by optical microscope and quantitative image analysis. It is found that the size and the quantity of primary silicon in castings decrease with the increase of added Ce in the melt. Meanwhile primary silicon changes from branched shape to fine facetted shape. Although the modification on eutectic silicon in castings also improves with the increase of added Ce in the melt, the effect of modification on eutectic silicon away from primary silicon is more obvious than that on eutectic silicon close to primary silicon. The modification mechanism was analyzed in detail by means of scanning electron microscope equipped with energy dispersive analysis of X-ray and thermodynamics analysis, which included the analysis on the change in standard Gibbs energy of reaction and reaction equilibrium.

关键词： metal material modification mechanism thermodynamics analysis rare earth element hypereutectic Al-Si alloy