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Present Situation and Development Trends of china Plastics Packaging Materials Industry

中国塑料 2003年第11期 6-8页

作者： CAI Ming chi (vice chairman and Secretary of committee of Plastics Packaging, china Packaging technology Society,Beijing 100037,china)

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Leap-forward Deve lopment for china's Shipbuilding

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中国船检 2003年第12期 8-10页

作者： vice chairman OF STATE COMMISSION OF DEFENCE science technology INDUSTRY OF china ZHANG GUANGQIN

china shipbuilding industry has shown its strong development trend at the beginning of the new century. It has entered a new stage of rapid development. As we have seen, china shipbuilding industry achieved continuous development in the past 20 years since the beginning of opening up and reforming. china ranked world third largest shipbuilding nation for eight

关键词： for in of on as mode Leap-forward Deve lopment for china’s Shipbuilding

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Brief introduction of ten-year (1991-2000) programme of science and technology for environmental protection in china (Abstract)

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Journal of Environmental sciences 1993年第2期5卷 249-250页

作者： Jin Jianming vice chairman of SCOPE china/CAST, NEPA

1 science and technology for environmental protection in china The guiding principles in formulating the ten-year Programme of science and tech-nology for environmental protection are as follows: 1.1 science and technology should be great to the need economic construction and economic construction must rely on science and technology.

关键词： Abstract Brief introduction of ten-year programme of science and technology for environmental protection in china

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THE BEST LIPSCHITZ CONSTANTS OF BERNSTEIN POLYNOMIALS AND BEZIER NETS OVER A GIVEN TRIANGLE

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Analysis in Theory and Applications 1995年第2期11卷 1-8页

作者： Chen Falai(University of science and technology of china, china) Department of Mathematics University of Science and Technology of China Hefei P.R. China

This paper proved the following three facts about the Lipschitz continuous property of Bernstein polynomials and Bezier nets defined on a triangle: suppose f(P) is a real valued function defined on a triangle T, (1) If f(P) satisfies Lipschitz continuous condition, i. e. f(P)∈Lip4α, then the corresponding Bernstein Bezier net fn∈LipAsecαψα, here ψ is the half of the largest angle of triangle T; (2) If Bernstein Bezier net fn∈ LipBα, then its elevation Bezier net Efn∈LipBα; and (3) If f(P)∈Lipαa, then the corresponding Bernstein polynomials Bn(f;P)∈LipAsecαψα, and the constant Asecαψ best in some sense.

关键词： THE BEST LIPSCHITZ CONSTANTS OF BERNSTEIN POLYNOMIALS AND BEZIER NETS OVER A GIVEN TRIANGLE NETS net line

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china-East Asia Cooperation——In the Context of Economic Globalization and Regional Integration

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china International Studies 2006年第3期26卷 4-14页

作者： Cheng Siwei is vice chairman of the Standing committee of the National People’s Congress of china.

Ⅰ.Economic globalization and regional integration Economic globalization, a general trend in the world’s development today, is interdependence for various countries in its real sense. Economic globalization, which began in the initial stage of development of capitalism, has a history of over a hundred years, and has undergone several stages from raw material procurement to trade in commodities and then to technology transfer and capital export, making economic

关键词：田七切胶

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Anisotropic characteristic in HDDR Nd_(13)Fe_(80)B_7

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Journal of University of science and technology Beijing 2003年第3期10卷 26-29页

作者： Jingzhi Han, Aizhi Sun, Yaofu Xiao, Xubo Liu, and Run WangMaterials science and Engineering School, University of science and technology Beijing, Beijing 100083, china Mat. Sci. and Eng. Sch. Univ. of Sci. and Technol. Beijing Beijing 100083 China

The function of disproportionation and desorption stages ofhydrogenation-disproportionation-desorption-recombination (HDDR) process in the formation ofmagnetic anisotropy was studied. The results showed that degree of anisotropy (DOA) ofNd_(13)Fe_(80)B_7 induced by appropriate HDDR process is comparable with that ofNd_(13)Fe_(80-x)B_7M_x (M=Co, Zr or Ga), however, the moderate coercive force of Nd_(13)Fe_(80)B_7magnetic powder led to an undesirable (BH)_(max) of 104 kJ/m^3 in bonded magnet. Experimentsdemonstrated that a relatively short disproportionation time, combined with a high desorptiontemperature and slow desorption rate, during HDDR process is beneficial to anisotropy attainment,but HDDR Nd_(13)Fe_(80)B_7 magnetic powder becomes isotropic if the disproportionation time islonger than a certain period. This phenomenon strongly indicated that the origin of anisotropy inNdFeB-type HDDR material is contributed by disproportionation stage. XRD (X-ray Diffraction)analysis and TEM (Transmission Electron Microscope) observation told that no other phase exceptNdH_2, alpha-Fe and Fe_2B has been found in the disproportionation step. The formation of HDDRNd_(13)Fe_(80)B_7 anisotropy might be related to the early lamella disproportionation structure.

关键词： HDDR anisotropy isotropy NdFeB

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A SURVEY OF SUIZHOU METEORITE SHOWER

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Chinese science Bulletin 1989年第5期34卷 414-416页

作者： JOINT EXPEDITION TEAM OF SUIZHOU committee OF science AND technology,AND GUIYANG INSTITUTE OF GEOCHEMISTRY,ACADEMIA SINICA ACAD SINICA INST GEOCHEMGUANGZHOUPEOPLES R CHINA

A chondrite shower occurred on April 15, 1986 in the vicinity of Dayianpo Village, Suizhou City, Hubei Province. It is the second large scale meteorite shower following the Jilin Meteorite Shower.

关键词： meteorite Suizhou Meteorite Shower fall phenomenon distribution range of fragments.

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Composition Operators on the Bloch Space of Several Complex Variables

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Acta Mathematica Sinica,English Series 2000年第1期16卷 85-98页

作者： Jihuai Shi Luo Luo Department of Mathematics,University of science and technology of china,Heifei 230036,P.R.china Fax:(0551)3631760 Department of Mathematics University of Science and Technology of China Heifei 230036 P.R. China

In this paper,we study the boundedness and compactness of composition operator C on the Bloch space β（Ω）,Ω being a bounded homogeneous *** Ω=Bn,we give the necessary and sufficient conditions for a composition o... 详细信息

关键词： Bloch space Composition operator Bergman metric

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Reconfigurable design and implementation of the MD6 Hash function

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The Journal of china Universities of Posts and Telecommunications 2010年第2期17卷 109-115页

作者： GAO Xian-wei Department of Electronic and Information Engineering,Beijing Electronic science and technology Institute,Beijing 100070,china Department of Electronic and Information Engineering Beijing Electronic Science and Technology Institute Beijing 100070 China

Efficient reconfigurable field programmable gate array （FPGA） architectures for the MD6-224/256/384/512 Hash algorithm are proposed in this article. The basic iterative compact design requires 923 ALMs and achieves a throughput ranging from 225 Mbit/s to 394 Mbit/s at a maximum frequency of 198 MHz. The 32-step-urtrolled high-throughput design requires 7 090 ALMs and achieves a throughput ranges from 5 776 Mbit/s to 9 490 Mbit/s at a maximum frequency of 173 MHz. The simulation results show that high flexibility and efficient FPGA implementation of the MD6 Hash function is achieved.

关键词： SHA-3 MD6 reconfigurable iterative loop-unrolling

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Electrochemical impedance characteristics of LC4 aluminum alloy treated with ZH1 technique

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Rare Metals 2002年第1期21卷 48-55页

作者： ZHANG Wei, LI Jiuqing, WU Yinshun, and HE Jianping Corrosion and Protection Center, University of science and technology Beijing, Beijing 100083, china Corrosion and Protection Center University of Science and Technology Beijing 北京 100083

Zhl technique was used to form a corrosion resistant layer on LC4alloy. the composition of the layer was studied by X-rayphotoelectron spectroscopy (XPS). It is found that the layer iscomposed of oxides of metals on the sub- strate, such as Al_2O_3,ZnO, MgO_, CuO, and MnO_2. The elecrochemical impedance spectrums(EIS) of LC4 aluminum alloy specimen were measured in NaCl solutionsto study the mechanism of the corrosion resistance of the alloytreated with Zh1 technique.

关键词： aluminium alloy rare earth metal electrochemical impedance corrosion

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