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An Expert System in FRP Composite Material Design

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Journal of Materials Science & Technology 2001年第5期17卷 556-560页

作者： Qingfen LI, Zhaoxia CUI and Weimin WANG College of Mechanical & Electrical Engineering, Harbin Engineering university, Harbin 150001, china Jianhua GAO Department of Mechanical Engineering, Shanghai Jiao Tong university, Shanghai 20003., china Harbin Engn Univ Coll Mech & Elect Engn Harbin 150001 Peoples R China Shanghai Jiao Tong Univ Dept Mech Engn Shanghai 200030 Peoples R China

An expert system prototype for fibre-reinforced plastic matrix (FRP) composite material design, ESFRP, has been developed. The system consists of seven main functional parts: a general inference engine, a set of knowledge bases, a material properties algorithm base, an explanation engine, various data bases, several function models and the user interface. The ESFRP can simulate human experts to make design scheme for fibre-reinforced plastics design, FRP layered plates design and FRP typical engineering components design. It can also predict the material properties and make strength analysis according to the micro and macro mechanics of composite materials. A satisfied result can be gained through the reiterative design.

关键词： An Expert System in FRP Composite Material Design FRP

Conditions for the uniqueness of statistic’s distribution in the class of spherical distridutions

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数学研究与评论 1987年第3期 479-486页

作者： Bian Guorui,Wang Jiagang Fudan university Shanghai,chinaZhang yaoting wuhan university wuhan china

This paper gives the necessary and sufficient conditions, which are very simple for checking the uniqueness of the distribution of a statistic in those classes of the matrix spherical distributions and improve the res... 详细信息

关键词： Conditions for the uniqueness of statistic’s distribution in the class of spherical distridutions

A COUNTER-EXAMPLE CONCERNING THE ANALYTIC RADON-NIKODYM PROPERTY

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Chinese Annals of Mathematics,Series B 1995年第1期16卷 15-22页

作者： BU SHANGQUAN (Department of Applied Mathematics, Qinghua university Beijing 100084, china.Project supported by the National Natural Science Foundation of china.) QINGHUA UNIV DEPT APPL MATHBEIJING 100084PEOPLES R CHINA

It is shown that there exists a J-convex subset C of a complex Hilbert space X, such that the J-convex hull of the set of all Jensen boundary points of C is different from C..

关键词： Analytic Radon-Nikodym property J-convex subset Jensen measures Jensen boundary point Banach spaces.

On triangular algebras with noncommutative diagonals

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Science china Mathematics 2008年第10期51卷 1937-1944页

作者： DONG AiJu Department of Mathematics, Xi’an university of Arts and Science, Xi’an 710065, china Institute of Mathematics Zhejiang Sci-Tech University Hangzhou 310018 China Department of Mathematics Statistics and Computer Science St. Francis Xavier University Antigonish Nova Scotia Canada B2G 2W5

We construct a triangular algebra whose diagonals form a noncommutative algebra and its lattice of invariant projections contains only two nontrivial projections. Moreover we prove that our triangular algebra is maximal.

关键词： triangular algebra von Neumann algebra reflexive algebra reflexive lattice 47L75 46L10

AN ANALYTICAL SOLUTION FOR THE MODEL OF DRUG DISTRIBUTION AND ABSORPTION IN SMALL INTESTINE

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Acta Mechanica Sinica 1990年第4期6卷 316-323页

作者： Xu Mingyu (Department of Mathematics,Shandong university,Jinan,250100,china) 1. Department of Mathematics Shandong University 250100 Jinan China

According to the physiological and anatomical characteristics of small intestine,neglecting the effect of its motility on the distribution and absorption of drug and nutrient,*** et *** a model of two-dimensional laminar flow in a circular porous tube with permeable wall and calculated the concentration profile of drugby numerical *** this paper,we give a steady-state analytical solution of the above model including *** obtained results are in agreement with the results of their numerical analysis. Moreover the analytical solution presented in this paper reveals the relation among the physiological parameters of the model and describes the basic absorption rule of drug and nutrient through the intestinal wall and hence pro- vides a theoretical basis for determining the permeability and reflection coefficient through in situ experiments.

关键词： drug and nutrient distribution and absorption in small intestine model and analytical solution

Accumulation of Pathogenesis-related Type-5 Like Proteins in Phytoplasma-infected Garland Chrysanthemum Chrysanthemum coronarium

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Acta Biochimica et Biophysica Sinica 2004年第11期36卷 773-779页

作者： Bo-Xiong ZHONG and Yan-Wei SHENDepartment of Bioresource Science, College of Animal Science, Zhejiang university, Hangzhou 3.0029, china Department of Bioresource Science College of Animal Science Zhejiang University Hangzhou 310029 Chin

Soluble proteins extracted from leaves, apical shoots, axillary shoots, and stems of garland chrysanthemum plants infected by onion yellows phytoplasma were analyzed by two-dimensional gel electrophoresis. Computerized matching analysis revealed that at least six soluble proteins were accumulated specifically in phytoplasma-infected garland chrysanthemum. N-terminal amino acids sequences of these soluble

关键词： phytoplasma garland chrysanthemum Chrysanthemum coronarium pathogenesis-related proteins thaumatin osmotin

Reexamination of Correlations for Nucleate SiteDistribution on Boiling Surface by Fractal Theory

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Journal of Thermal Science 1997年第2期6卷 128-131页

作者： Yang Chunxin(university of Aeronautics and Astronautics, 100083.Beijing, china) university of Aeronautics and Astronautics Beijing China

Nucleate site distribution plays an essential role in nucleate boiling process. In this paper1 it is pointed out that the size and spatial distribution density of nucleate sites presented on real boiling surface can be described by the normalized fractal distribution function, and the physical meaning of parameters involved in some experimental correlations proposed by early investigations are identified according to fractal distribution function. It is further suggested that the surface micro geometry characteristics such as the shape of cavities should be described and analyzed qualitatively by using fractal theory.

关键词： nucleate site distribution density nucleate boiling fractal theory

A SYNCHRONIZATION ALGORITHM FOR HF(HIGH FREQUENCY) BROADBAND OFDM SYSTEM

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Journal of Electronics(china) 2008年第2期25卷 258-261页

作者： Yang Lei Zhang You＇ai Harbin Engineering university Harbin 150001 China wuhan Maritime Communication Research Institute Wuhan 430079 China

In this letter,a kind of associated synchronization algorithm which is suitable for HF(High Frequency) broadband OFDM(Orthogonal Frequency Division Multiplexing) system is presented based on describing and constructing the GMW(Gorden,Mills and Welch) sequence. The algorithm is based on the Schmidl and Minn's symbol timing principle,the constructed GMW sequence is trans-mitted and disposed,and the synchronization is adjudicated using the correlation of GMW sequence. The simulation result indicates that this algorithm has high performance synchronization ability under the low SNR(Signal to Noise Ratio) at two different kinds of channel models.

关键词： HF (High Frequency) Broadband OFDM (Orthogonal Frequency Division Multiplexing) Synchronization

Alkylation mechanism of benzene with 1-dodecene catalyzed by Et_3.HCl-AlCl_3

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Science china Chemistry 2010年第5期53卷 1101-1106页

作者： QI GuoPeng 1,JIANG Feng 1,SUN XueWen 2 & ZHAO SuoQi 2 1School of Chemical Engineering,Tianjin university,Tianjin 3.0072,china 2State key Laboratory of Heavy Oil Processing,Petroleum university of{3.,Beijing 102249,china 1. School of Chemical Engineering Tianjin University Tianjin 300072 China2. State key Laboratory of Heavy Oil Processing Petroleum University of China Beijing 102249 China

The isotope exchange method was employed to investigate the catalytic mechanism of ionic liquid in alkylation of benzenes with *** is proposed that alkylation was induced by the Lewis acid AlCl3.which attracted π electrons of 1-dodecene to shift toward 1-carbon,thus forming a carbonium *** carbonium ion further reacted with benzenes to form a *** to unstabilit of the complex,a deuterated ring proton was transferred into an electronegative 1-carbon of the side chain to substitute for the AlCl3.accordingly 2-phenyldodecane was generated.

关键词： ionic liquid alkylation mechanism deuteriobenzene isotope exchange method