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The 2002 annual report of research and development of aerodynamics in China (January 2003)

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空气动力学学报 2003年第4期 494-500页

作者： DENG Xue-ying (The Chinese Aerodynamics research Society,Beijing 100083)

Chinese Aerodynamics research Society has been motivated by the mission statement “Academic Innovation, Economical Provision, Personnel Education, Science and Technology Popularization” and by the suggestion of “To be Creative, Competitive, Cohesive, Autonomous”, which were raised by Professor Zhang Hanxin, the board chairman of Chinese Aerodynamics research Society in the Forth National Convention of the society. Under the leadership of the participating organizations of the society, through the diligent work of numerous scientists and technicians, Chinese Aerodynamics research Society has made significant progress and obtained important research achievements in the fields of theoretical analysis, experimental research, computational fluid mechanics, development of the experimental facilities and equipments system, and the engineering application of aerodynamics in the year 2002. Such progress has established a solid foundation for the breakthrough in the aerodynamic research in the near future and for making the aerodynamic technologies the critical element in the national economy and defense in China.

关键词： January 2003 The 2002 annual report of research and development of aerodynamics in China of in

research and Development on PFBC-CC in China and Jiawang Pilot Plant Project

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Journal of Thermal Science 1994年第3期3卷 205-210页

作者： Ningsheng Cai Mingyao Zhang Dan Li Wenting Fu (Thermal Energy Engineering research Institute, Southeast University, Nanjing 210096, China) 1. Thermal Energy Engineering research Institute Southeast University 210096 Nanjing China

Pressurized Fluidized Bed Combustion(PFBC) is recognized as an advanced coal-fired technology which can improve efficiency in combined cycle scheme and reduce environmental pollution. Progressive status on PFBC-CC in China is presented in this paper. Test results on a 1 MWt bench scale experimental PFBC facility is reviewed briefly. Based on retrofitting of an old steam power plant located at Jiawang,a project to construct a PFBC-CC pilot plant is under way. Designed capacity of the pilot plant is about 15 MWe, 3 MWe from gas cycle and 12 MWe from steam cycle. The system configuration, main design parameters, estimated technical performance as well as construction schedule of the pilot plant are described. The bright future for PFBC-CC in China is also indicated.

关键词： pressurized fluidized bed combustion combined cycle pilot plant

research and REALIZATION OF MUTUAL TRIMMING OF NURBS

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Chinese Journal of Aeronautics 1997年第2期10卷 119-126页

作者： Shen Qingyun Zhou Laishui Zhou Rurong(research Center of CAD/CAM Engineering, Nanjing University ofAeronautics and Astronautics, Nanjing, 210016, China) Res. Center of CAD/CAM Engineering Nanjing Univ. Aero. and Astronaut. Nanjing 210016 China

Since regular surface is defined by a mapping from 2-D parameter plane to 3-D space, trimming of NURBS surface is equivalent to changing a valid parameter region ofthe surface with the same mapping. In this paper, by presenting a rigid and comprehensi-ble definition of union, difference and intersection of two intersecting loops in the parame-ter region of NURBS surface, and by working out the corresponding algorithm, a rebui1d-ing algorithm of the valid parameter region of NURBS surface is obtained.

关键词： contours surfaces computer aided design parametric surface nonuniform rational B-spline

research and Applications of Semi-solid Processing

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Rare Metals 2001年第2期20卷 74-77页

作者： Kui Zhang, Jun Xu, Likai Shi, Daijin Cui, Yuxin Zheng (General research Institute for Nonferrous Metals, Beijing 100088, China Dongfeng Motor Corp., Shiyan 442001, China) Gen Res Inst NonFerrous Met Beijing 100088 Peoples R China Dongfeng Motor Corp Shiyan 442001 Peoples R China

It has been more than ten years since the semi-solid processing (SSP) technique was put into commercial applications in the world. A lot of work on semi-solid metals (SSM) including their preparation, reheating and semi-solid forming has been done in China. In order to produce the high quality die-casting, a novel innovation that modifies the present machines based on the SSP technique was proposed. Semi-solid die-casting on modified casting machines can manufacture parts with more excellent quality than those produced by squeeze casting. It was found that the defects such as 'elephant foot' and 'periphery liquid metal loss' during reheating could be avoided through controlling the non-dendritic structure of billets and optimizing the reheating process. The processing parameters and mold designs of semi-solid die-casting are fairly different from those of liquid die-casting.

关键词： semi-solid processing Al-Si alloy automotive component die casting

research and APPLICATION OF REMOTE SENSING IN THE FIELDS OF SURVEYING AND MAPPING

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遥感信息 1990年第A2期12卷 28-29页

作者： Chu Liangcai (research Institute of Surveying and Mapping, Beijing)

The technique of aerial photography has been used in the surveying and Mapping for more than fifty years. Along with the development of space technolongy, the satellite images are more and more widely applied to solve the survey problems. Recent years, the surveying and mapping community has conducted more deeply investigation into the remote sensing and carried out extensive applications.

关键词： surveying photography deeply aerial fifty Mapping hasbeen Tianjin requirement carry

Characterization of Hydrotreating Catalysts in Fundamental research and Development

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石油学报（石油加工） 1997年第S1期13卷 102-107页

作者： Luo Xihui, He Jinhai (Fushun research Institute of Petroleum and Petrochemicals, Fushun 113001)

ＣｈａｒａｃｔｅｒｉｚａｔｉｏｎｏｆＨｙｄｒｏｔｒｅａｔｉｎｇＣａｔａｌｙｓｔｓｉｎＦｕｎｄａｍｅｎｔａｌＲｅｓｅａｒｃｈａｎｄＤｅｖｅｌｏｐｍｅｎｔＬｕｏＸｉｈｕｉ，ＨｅＪｉｎｈａｉ（ＦｕｓｈｕｎＲｅｓｅａｒｃｈＩ... 详细信息

ＣｈａｒａｃｔｅｒｉｚａｔｉｏｎｏｆＨｙｄｒｏｔｒｅａｔｉｎｇＣａｔａｌｙｓｔｓｉｎＦｕｎｄａｍｅｎｔａｌＲｅｓｅａｒｃｈａｎｄＤｅｖｅｌｏｐｍｅｎｔＬｕｏＸｉｈｕｉ，ＨｅＪｉｎｈａｉ（ＦｕｓｈｕｎＲｅｓｅａｒｃｈＩｎｓｔｉｔｕｔｅｏｆＰｅｔｒｏｌｅ...

关键词： PASCA hydrotreating catalyst

research and Suggestions on the Coordinated Management and Protection of Intellectual Property in China

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Science Foundation in China 2003年第1期11卷 25-30页

作者： Chen Meizhang(Teaching and research Centre of Intellectual Property, PKU, Beijing 100871)

From two aspects of intellectual property management, namely the subject and the object,this article discusses the development and im-provement of intellectual property system in China and the gap and problems existed compared with developed countries. Based on this, the issue ofhow to improve the coordinated management of intellectual property is studied and the relevant proposals are put forward.

关键词： intellectual property coordinated management protection

research and Application of Biocontrol of Plant Pathogens in China

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Research and Application of Biocontrol of Plant Pathogens in...

research and Development of Maximizing Iso-Paraffins (MIP) Technology

作者： Dr Yang Hetong Biology research Institute, Biotechnology research Center, Shandong Academy of Sciences, Jinan, PR China, 250014

＜正＞ Biocontrol Strategies Most of the strategies commonly adopted in plant disease biocontrol are used in China,thefollowing being the generally accepted ones（Zhang et al,2002）: *** the pathogen population with microbes Biocontrol agents can be used to inhibit the growth of pathogen populations to different levels,by way of the multiplication,introduction and applications of antagonists into the spermosphere,phylloplane,rhizosphere and the rhizoplane of *** involved are diversified,bacteriocin-producing bacteria（Yang,Wang et al,1993）,avirulent strains of pathogens(Li et al,

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工程科学（英文版） 2003年第2期1卷 47-52页

作者： Long Jun, Xu Youhao, Zhang Jiushun, He Mingyuan (research Institute of Petroleum Processing, SINOPEC, Beijing\ 100083)

research Institute of Petroleum Processing has successfully developed a maximizing iso paraffins (MIP) technology in response to the clean gasoline specifications. A concept of two different reaction zones technique was proposed based on the FCC reaction mechanism. The concept was used to design a novel reactor with the corresponding engineering measures. Results of experiments conducted on the newly designed pilot plant riser reactor showed that the formation of iso paraffins was enhanced by the two reaction zones technique; olefin content and sulfur content in gasoline were lowered simultaneously. The catalyst tailored for MIP process has also been developed and commercialized. An existed 1.4Mt/a RFCC unit was revamped to demonstrate MIP process, and the commercial trial results were in good agreement with the results of pilot plant test. MIP technology has provided a new approach for producing clean gasoline from heavy oil.

关键词： catalytic cracking riser reactor reaction mechanism gasoline olefin