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Chinese Journal of Polymer science 2002年第6期20卷 525-530页

作者： De-cheng Wu Ying-fang Zou Cai-yuan Pan department of Polymer science and Engineering University of science and technology of china, Hefei 230026, china department of Polymer science and Engineering University of Science and Technology of China Hefei 230026

The copolymerization of styrene (St) with maleic anhydride (MAh) under gamma radiation at room temperature in the presence of benzyl dithiobenzoate (BDTB) was found to display 'living' nature evidenced by constant concentration of chain radicals during the copolymerization, linear evolution of molecular weights with conversion and narrow molecular weight distribution (M-w/M-n = 1.23-1.35). The compositional analysis and the sequence structural information of the copolymers obtained from DEPT (Distortionless Enhancement by Polarization Transfer) experiments demonstrate that the copolymers obtained also possess strictly alternating structure.

关键词： controlled radical polymerization alternating copolymer maleic anhydride styrene

AN INVARIANCE OF CDF EQUATION

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Chinese Annals of Mathematics,Series B 1994年第2期15卷 241-246页

作者： TIAN CHOU(department of Matehematics,University of science and technology of china, Hefei 230064, Anhui, china) 中国科学技术大学数学系安徽合肥 230026

This paper presents a new invariance for the CDF equation. Using this invariance, the author obtains some new solutions of CDF equation.

关键词： CDF equation Invariance MKdV equation.

Ti/Al_2O_3 Functionally Gradient Material Prepared by the Explosive Compaction/SHS Process

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Journal of Materials science & technology 1999年第3期15卷 271-275页

作者： Yimin LI(Powder Metallurgy Research institute, Central-South University of technology, Changsha 410083, china)Ziqiao ZHENG(department of Materials science and Engineering, Central-South University of technology, Changsha 410083, china) Powder Metallurgy Research institute Central-South University of Technology Changsha 410083 China department of Materials science and Engineering Central-South University of Technology Changsha 410083 China

Ti1Al2O3 Functionally Gradient Material (FGM) was prepared by an explosive compaction/SHS process. Ten sheets of the compounding powder were laminated and pressed to get a green body of FGM. It was then compacted explosively By burying the explosive compaction body into a stoichiometric Al/TiO2 mixture and igniting the combustion of the stoichiometric Al/TiO2 mixture, the SHS reaction of the explosive compaction body was initiated by the heat released from the combustion of the stoichiometric Al/TiO2 mixture. In this way, Ti/Al2O3 FGM was synthesized. The adiabatic temperatures of each gradient layer were calculated when the preheating temperatures were 298 K and 1173 K, respectively The microstructure, composition and properties of Ti/Al2O3 FGM and the reaction mechanism of each gradient layer were studied. It was found that Ti/Al2O3 FGM prepared by the explosive compaction/SHS process had a high density and a high microhardness. Its structure, composition and properties showed apparent gradient distribution. The structure of the standard stoichiometric ratio gradient layer of FGM was a network structure. Its reaction mode could be described as follows: Al powder melted first, then the molten Al penetrated into the TiO2 zone and reacted with TiO2, and big pores were left in the original positions of Al powder. The reaction of gradient layers with the addition of Al3O3 as diluents was similar to that of the standard stoichiometric ratio gradient layer, so were their structure and composition. However, the reaction of gradient layers with the addition of Ti as diluents was more complex and the composition deviated slightly from the designed one

关键词： Al SHS Ti/Al2O3 Functionally Gradient Material Prepared by the Explosive Compaction/SHS Process

Residue Phe266 in S5-S6 loop is not critical for Charybdotoxin binding to Ca2+-activated K~+(mSlo1)channels

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Acta Pharmacologica Sinica 2006年第7期27卷 945-949页

作者： Jmg YAO~2 Hui LI~2 Ge-liang GAN Ying WU Jiu-ping DING~3 institute of Biochemistry and Biophysics,College of life science and technology,Huazhong University of science and technology,Wuhan 430074,china institute of Biochemistry and Biophysics College of Life Science and Technology Huazhong University of Science and Technology Wuhan China

Aim:To gain insight into the interaction between the Charybdotoxin(ChTX)andBK ***:Site-directed mutagenesis was used to make two mutants:mSlol-F266L and *** two mutants were then expressed in Xeno-pus oocytes and their effects were tested on ChTX by ***:We demonstrate an equilibrium dissociation constant Kd=3.1—4.2 nmol/L for both the mutants mSlol-F266L and mSlol-F266A similar to thatof the wild-type mSlol Kd=3.9 nmol/***:The residue Phe266 does notplay a crucial role in binding to ChTX,which is opposed to the result arising fromthe simulation of peptide-channel interaction.

关键词： charybdotoxin large-conductance calciumactivated potassium channelss Slo1

Monomial Hopf algebras over fields of positive characteristic

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science china Mathematics 2006年第3期49卷 320-329页

作者： LIU Gongxiang & YE Yu institute of Mathematics, Academy of Mathematics and Systems science, Chinese Academy of sciences, Beijing 100080, china department of Mathematics, University of science and technology of china, Hefei 230026, china institute of Mathematics Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing China department of Mathematics University of Science and Technology of China Hefei China

In this paper, we study the structures of monomial Hopf algebras over a field of positive characteristic. A necessary and sufficient condition for the monomial coalgebra Cd(n) to admit Hopf structures is given here, and if it is the case, all graded Hopf structures on Cd(n)are completely classified. Moreover, we construct a Hopf algebras filtration on Cd(n) which will help us to discuss a conjecture posed by Andruskiewitsch and Schneider. Finally combined with a theorem by Montgomery, we give the structure theorem for all monomial Hopf algebras.

关键词： monomial coalgebra, Gaussian binomial coefficient, monomial Hopf algebra.

WEB-BASED REQUIREMENT SURVEY SYSTEM FOR MASS CUSTOMIZATION

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WEB-BASED REQUIREMENT SURVEY SYSTEM FOR MASS CUSTOMIZATION

REGULARITIES AND SINGULARITIES OF THE ENERGY MINIMIZERS OF THE HEISENBERG GROUP TARGETS

2005年中国机械工程学会年会

作者： ZHOU Ziqiang, PAN Yi, LI Mujun, SHAN Liguan ( Mechanical department, changshu institute of technology,changshu, 215500 department of Precision Machinery, University of science & technology of china, Hefei, 230026)

＜正＞This paper presents a web-based survey system which is used for the Mass Customization oriented product family development. The framework of the system is illustrated. The implementation and application technology of the system is also described. The approach of develop product family based on the statistic analyzed data is discussed.

关键词： mass customization requirement survey product family

来源： cnki会议评论

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Acta Mathematica Scientia 2003年第4期23卷 447-452页

作者：贾高 School of science Nanjing University of Science and Technology Nanjing 210094 China Department of Mathematics Bengbu Tank Institute Bengbu 233013 China

In this paper, the properties of the maps for the Heisenberg group targets are studied. For u e∈W1,α(Ω, Hm), some Poincare type inequalities are proved. For the energy minimizers, the ∈-regularity theorems and the... 详细信息

关键词： Heisenberg group energy minimizer Legendrian map regularity singularity

Optimization of the inhibition of atmospheric window emission using photonic crystals

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science china(Technological sciences) 2010年第5期53卷 1315-1319页

作者： LI Jin & YE Hong department of Thermal science and Energy and Engineering,University of science and technology of china,Hefei 230026,china department of Thermal science and Energy and Engineering University of Science and Technology of China Hefei China

Transfer matrix method is used to discuss the effect inhibition of photonic crystals on atmospheric window emission(ε-14 μm).According to the optical characteristics of the materials,germanium and zinc sulfide are used as the composing *** structure of the photonic crystals is optimized,and the optimal thickness values of the germanium and zinc sulfide are 0.63 and 1.11μm respectively while the ratio of optical thickness is 1:1 and the period is *** photonic crystals are prepared by evaporation coating method,and the optical properties of the photonic crystals are measured,the inhibition of the photonic crystals to atmospheric window emission is verified.

关键词： photonic crystals emission at atmospheric window inhibition

D-CONVERGENCE AND STABILITY OF A CLASS OF LINEAR MULTISTEP METHODS FOR NONLINEAR DDES

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Journal of Computational Mathematics 2000年第2期18卷 199-206页

作者： Cheng-jian Zhang Xiao-xin Liao (department of Mathematics, Huazhong University of science and technology, Wuhan 430074, china) 华中科技大学湖北武汉 430074

Presents information on a study which dealt with the error behavior and the stability analysis of a class of linear multistep methods with the Lagrangian interpolation as applied to the nonlinear delay differential eq... 详细信息

关键词： D-convergence stability multistep methods nonlinear DDEs

Effective temperature and exergy of monochromic blackbody radiation

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Progress in Natural science:Materials International 2007年第10期17卷 1250-1254页

作者： Chen Zeshao and Mo Songping(department of Thermal science and Energy Engineering, University of science and technology of china, Hefei 230027, china) department of Thermal science and Energy Engineering University of Science and Technology of China Hefei 230027 China

A new parameter named monochromic effective temperature Tλ is proposed, which represents the thermodynamic quality of monochromic blackbody radiation. The exergy of the monochromic blackbody radiation is expressed by Tλ. The monochromic effective temperature equation is developed, which shows that the product of Tλ and the wavelength is constant, which equals 5.33016×10-3 m·K. The exergy function of monochromic blackbody radiation is presented. The cause of the view that there is negative entropy production in photosynthesis can be explained by the results of this work.

关键词： photon monochromic effective temperature exergy of monochromic radiation.