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Multi-User Collaborative Assembly Planning over the Internet

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Computer Aided Drafting,Design and Manufacturing 2003年第1期13卷 39-47页

作者： Wang Junfeng Liu Jihong Zhong Yifang CAD center, Huazhong University of Science and Technology, wuhan 430074, china CADcenter HuazhongUniversityofScienceandTechnologyWuhan430074China

Due to the increasing complexity of products and for the distributed product development, more closely collaborative work among designers is required. A collaborative assembly planning approach is proposed to support assembly planning in a networked environment. The working procedure is depicted and the key techniques including collaborative-planning-oriented assembly decomposition modeling, assembly assignment modeling, and sub-plans merging are addressed. By incorporating visual models at client side with assembly application models at server side, a web-based supporting environment for collaborative assembly planning has been developed using VRML and Java-EAI techniques. A case study is given to illustrate the feasibility and validity of the idea.

关键词： collaborative assembly sequence planning decomposition and assignment modeling sequences merging internet

Characterization of male gametophyte in rice

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Characterization of male gametophyte in rice

第十一届全国植物基因组学大会

作者： Wei Zhang,Yongjun Lin~* National Key Laboratory of Crop Genetic Improvement,National center of Plant Gene research(wuhan), Huazhong Agricultural University,wuhan,430070,P.R.china

Male gametophyte is very important for rice sexual ***11,one of japonica rice, is investigated as experimental material in this *** gametophytes in rice are balls of about 30-43μm.A normal male gametophyte in develop...

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铝锆碳浸入式水口异常堵塞原因分析

武钢技术 2010年第4期48卷 20-23,47页

作者：陈方玉陈恬武钢研究院湖北武汉430080

对钢液微合金化钛处理后引起堵塞的铝锆碳质浸入式水口进行分析,结果表明:堵塞物质为铝酸钙和钙钛矿。铝酸钙有变质体中的析出相,也有水口内壁处的原位反应产物,还有钢液中内生夹杂物。中包渣渗有钛处理和铝处理后的残留物,改变了原有属... 详细信息

对钢液微合金化钛处理后引起堵塞的铝锆碳质浸入式水口进行分析,结果表明:堵塞物质为铝酸钙和钙钛矿。铝酸钙有变质体中的析出相,也有水口内壁处的原位反应产物,还有钢液中内生夹杂物。中包渣渗有钛处理和铝处理后的残留物,改变了原有属性,导致水口边滞留,为新生高熔点物质铝酸钙提供了物质来源,新生和内生铝酸钙及钙钛矿共同引起水口结瘤导致堵塞。

关键词：浸入式水口水口堵塞铝酸钙钙钛矿中包渣

OsKYG1 encoding a pentatricopeptide repeat protein,modulates bacteria blight resistance in rice

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OsKYG1 encoding a pentatricopeptide repeat protein,modulates...

第十一届全国植物基因组学大会

作者： Yinggen Ke,Shiping Wang~* National key laboratory of crop genetic improvement and national center of plant gene research(wuhan), Huazhong Agricultural University,wuhan,430070,P.R.china

Sugars modulate many vital processes that are also controlled by hormones during plant development and response to *** studies have revealed that the concentration of plants soluble sugars decreased greatly during exo...

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Rice Seed Germination:What We Can Learn from Proteomics

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Rice Seed Germination:What We Can Learn from Proteomics

第十二届全国植物基因组学大会

作者： Dongli He~1,Chao Han~(1,4),Jialing Yao~2,Shihua Shen~3,Pingfang Yang~(1*) 1.Key Laboratory of Plant Germplasm Enhancement and Speciality Agriculture,wuhan Botanical Garden,Chinese Academy of Sciences,wuhan 430074,china 2.College of Life Science,Huazhong Agriculture University,wuhan 430093,china 3.The research and development center For Energy Plants,Institute of Botany,Chinese Academy of Sciences,Beijing 100091,china 4.Graduate University of Chinese Academy of Sciences,Beijing 100049,china

Construction of metabolic and regulatory pathways from proteomic data can contextualize the large scale data within the overall physiological scheme of an *** is an efficient way to predict metabolic phenotype or regulatory *** did protein profiling in the germinating rice seeds through one-dimensional electrophoresis via liquid chromatography tandem mass spectrometry proteomic shotgun *** total, 673 proteins were identified,and could be sorted into 14 functional *** largest group was metabolism *** metabolic proteins were integrated into different metabolic pathways to show the

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Speciation of the elements and compositions on the surfaces of dust storm particles:The evidence for the coupling of iron with sulfur in aerosol during the long-range transport

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Chinese Science Bulletin 2005年第8期50卷 738-744页

作者： ZHANG Xingying1,2, ZHUANG Guoshun1,2,3, CHEN Jianmin2 & XUE Huaxin2 1. center for Atmospheric Environment Study, Department of Chemistry, Beijing Normal University, Beijing 100875, china 2. center for Atmospheric Chemistry Study, Department of Environ- mental Science and Engineering, Fudan University, Shanghai 200433, china 3. LAPC/NZC, Institute of Atmospheric Physics, NZC/LAPC, Chinese Academy of Sciences, Beijing 100029, china center for Atmospheric Environment Study Department of Chemistry Beijing Normal University Beijing 100875 China center for Atmospheric Chemistry Study Department of Environmental Science and Engineering Fudan University Shanghai 200433 China LAPC/NZC Institute of Atmospheric Physics NZC/LAPC Chinese Academy of Sciences Beijing 100029 China

The speciation of the elements on the surface of the particles collected during dust storm and non-dust storm in Beijing and Inner Mongolia was studied by XPS. The ma- jor species of iron on the surface were oxides, sulfate, silicate, FeOOH and minor part sorbed on SiO2/Al2O3. Sulfate is the dominant species of sulfur on the surface. SiO2 and Al2O3 are the main components of Si and Al on the surface respectively. One of the most important findings was that the Fe(II) (FeS and FeSO4) produced could account for up to 44.3% and 45.6% of the total Fe on the surface in the aerosol sample collected at that night and next day of the “peak” time of the dust storm occurring on March 20, 2002, while Fe2(SO4)3, one of the Fe(III) species on the surface decreased from 67.1% to 49.5% and 48.0% respectively. Both S and Fe en- riched on the surface of aerosol particles. Fe(II) accounted for 1.3%?5.3% of total Fe in bulk aerosol samples during dust storm. These results provided strong evidence to sup- port the hypothesis of the coupling between iron and sulfur in aerosols during the long-range transport, which would have important impact on the global biogeochemical cycle.

关键词：物种形成原理 XPS 大气悬浮物 Fe-S结合粒子集合

research on the Knowledge Management Based on GIS

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Research on the Knowledge Management Based on GIS

2012 National Conference on Information Technology and Computer Science

作者： Minghai Luo wuhan Geotechnical Engineering and Surveying Institute wuhan,china

Knowledge management is to collect,organize,process and transmit the information and provide effective means to make use of the information *** development and application of GIS and internet technology will import the bran-new concept for the knowledge management,promote the knowledge management to the direction of videotext and collaboration,and increase the longitudinal deepness and the transverse extent for the knowledge *** development of knowledge management demands to build geographic information-based comprehensive resource system,carry out association and sharing of comprehensive information of multiple types and levels,and improve the knowledge management and knowledge finding capability of spatial information.

关键词： Knowledge management Geographical information system Internet

The precipitation strengthening behavior of Cu-rich phase in Nb contained advanced Fe-Cr-Ni type austenitic heat resistant steel for USC power plant application

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Progress in Natural Science:Materials International 2012年第3期22卷 175-185页

作者： Cheng-yu Chi a, Hong-yao Yu b, Jian-xin Dong b, Wen-qing Liu c, Shi-chang Cheng d, Zheng-dong Liu d, Xi-shan Xie b a School of Metallurgical and Ecological Engineering, University of Science & Technology Beijing, Beijing 100083, china b School of Materials Science and Engineering, University of Science & Technology Beijing, Beijing 100083, china c Instrumental Analysis & research center, Shanghai University, Shanghai 200444, china d Central iron and Steel research Institute, Beijing 100081, china [a] School of Metallurgical and Ecological Engineering University of Science & Technology Beijing Beijing 100083 China [b] School of Materials Science and Engineering University of Science & Technology Beijing Beijing 100083 China [c] Instrumental Analysis & research center Shanghai University Shanghai 200444 China [d] Central iron and Steel research Institute Beijing 100081 China

Copper has been used as a strengthening element in newly developed Fe-Cr-Ni type austenitic heat resistant steel for inducing Cu-rich phase precipitation to meet high temperature strength requirement for 600 ℃ Ultra Super-Critical (USC) coal fired power plants for many years. However, the precipitation behavior and strengthening mechanism of Cu-rich phase in these advanced austenitic heat resistant steels is still unclear. In order to understand the precipitation strengthening behavior of Cu-rich phase and to promote high strength austenitic heat resistant steel development, 18 Cr9 NiCuNb steel which is a Cu-added Nb contained advanced Fe-Cr-Ni type austenitic heat resistant steel has been selected for this study to be aged at 650 ℃ till to 10,000 h. Micro-hardness and room temperature tensile test were conducted after long-time aging. SEM, TEM, HRTEM and three dimensional atom probe (3DAP) technology accompanying with thermodynamic calculation have been used to investigate the Cu-rich phase precipitation behavior during 650 ℃ aging. The experimental results showed that Cu atoms can quickly concentrate in clusters at very early precipitation stage to form the fine nano-size Cu-rich "segregation areas" within less than 1 h at 650 ℃. With increasing aging time at 650 ℃ Cu atoms continuously concentrate to Cu-rich segregation areas (clusters) and simultaneously other kinds of atoms such as Fe, Cr and Ni diffuse away from Cu-rich segregation areas to austenitic matrix, and finally to complete the transformation from Cu-rich segregation areas to Cu-rich phase. However, there is only Cu atoms concentration but not crystallographic transformation from early stage of Cu-rich clusters forming to the final Cu-rich phase formation. Even the Cu atom becomes the main composed element after 500 h aging at 650 ℃ the Cu-rich phase still keeps coherent relationship with austenitic matrix. According the experimental results in this study, Cu-rich phase precipitation sequence which st

关键词： USC power plant Austenitic heat resistant steel Microstructure Cu-rich phase TEM 3DAP

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预应力混凝土钢丝张拉断裂分析

武钢技术 2010年第4期48卷 27-30页

作者：覃之光夏艳花武钢研究院湖北武汉430080

针对高碳钢盘条加工的预应力混凝土钢丝在轨枕模型中张拉断裂问题,对张拉断裂、拉拔断裂及盘条试样进行检验分析,并结合工艺参数控制情况,分析断裂产生的原因,提出改进的措施。经生产应用,后续生产盘条加工的钢丝未出现张拉断裂现象。

关键词：高碳钢盘条预应力钢丝轨枕张拉