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TOTAL SYNTHESIS OF SEX PHEROMONE COMPONENTS OF HYPHANTRIA CUNEA

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TOTAL SYNTHESIS OF SEX PHEROMONE COMPONENTS OF HYPHANTRIA CU...

Local electronic structure and magnetic properties of 3d transition metal doped GaAs

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作者： CHE Chao1 ZHANG Zhong-ning1 WANG Xin-xing2 and YAN Zheng-liang1 1Institute of Zoology Chinese Academy of Sciences Beijing 100080 china 2department of applied chemistry china Agricultural University Beijing 100094 china

来源： cnki会议评论

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Science china(Physics,Mechanics & Astronomy) 2008年第5期51卷 470-480页

作者： LIN He1 & DUAN HaiMing21 department of chemistry,Institute of applied chemistry,Xinjiang University,Urumqi 830046,china 2department of Physics,Xinjiang University,Urumqi 830046,china 1. department of chemistry Institute of Applied Chemistry Xinjiang University Urumqi 830046 China 2. department of Physics Xinjiang University Urumqi 830046 China

The local electronic structure and magnetic properties of GaAs doped with 3d transition metal (Sc, Ti, V, Cr, Mn, Fe, Co, Ni) were studied by using discrete variational method (DVM) based on density functional theory. The calculated result indicated that the magnetic moment of transition metal increases first and then decreases, and reaches the maximum value when Mn is doped into GaAs. In the case of Mn concentration of 1.4%, the magnetic moment of Mn is in good agreement with the experimental result. The coupling between impure atoms in the system with two impure atoms was found to have obvious variation. For different transition metal, the coupling between the impure atom and the nearest neighbor As also has different variation.

关键词： diluted magnetic semiconductor density functional theory 3d transition metal cluster model electronic structure

Meet Our New Editorial Board Members of Rising Stars

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Chinese Journal of chemistry 2024年第16期42卷 1797-1805页

作者： Editorial Office of Chinese Journal of chemistry 不详

Editorial Board Memberof Rising Stars:Xiulin Fan,Professor,School of Materials Science and Engineering Zhejiang University,Hangzhou,***:2003-2007,*** University,china.2007-2012,*** University,china(Supervisor:*** Chen).

关键词： china. Editorial Hangzhou

γ-Hydroxy-α,β-acetylenic esters:asymmetric syntheses and applications

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Science china chemistry 2010年第1期53卷 21-35页

作者： GAO Ge1 & PU Lin2 1department of chemistry,Sichuan University,Chengdu 610064,china 2department of chemistry,University of Virginia,Charlottesville,Virginia 22904-4319,USA 1. department of chemistry Sichuan University Chengdu 610064 China2. Department of Chemistry University of Virginia Charlottesville Virginia 22904-4319 USA

γ-Hydroxy-α,β-acetylenic esters are versatile synthetic precursors to many organic *** paper reviews the synthesis of chiral γ-hydroxy-α,β-acetylenic esters by asymmetric reduction of γ-oxo-α,β-acetylenic esters,enantioselective addition to aldehydes in the presence of chiral catalysts,and diastereoselective addition to chiral *** preparation of racemic γ-hydroxy-α,β-acetylenic esters is also *** are provided for the application of γ-hydroxy-α,β-acetylenic esters in organic synthesis.

关键词： γ-hydroxy-α β-acetylenic ester asymmetric enantioselective diastereoselective

Recovery and chemical utilization of carbon dioxide from fossil－fuel burning industrial sources

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Journal of Environmental Sciences 1995年第2期7卷 129-137页

作者： Yin Xiaolong (department of applied chemistry,Taiyuan University of Technology, Taiyuan 030024 , china) Dept of applied Chem Taiyuan Univ of Tech Taiyuan China China

Ｒｅｃｏｖｅｒｙａｎｄｃｈｅｍｉｃａｌｕｔｉｌｉｚａｔｉｏｎｏｆｃａｒｂｏｎｄｉｏｘｉｄｅｆｒｏｍｆｏｓｓｉｌ－ｆｕｅｌｂｕｒｎｉｎｇｉｎｄｕｓｔｒｉａｌｓｏｕｒｃｅｓＹｉｎＸｉａｏｌｏｎｇ（Ｄｅｐａｒｔｍｅｎｔｏｆ... 详细信息

Ｒｅｃｏｖｅｒｙａｎｄｃｈｅｍｉｃａｌｕｔｉｌｉｚａｔｉｏｎｏｆｃａｒｂｏｎｄｉｏｘｉｄｅｆｒｏｍｆｏｓｓｉｌ－ｆｕｅｌｂｕｒｎｉｎｇｉｎｄｕｓｔｒｉａｌｓｏｕｒｃｅｓＹｉｎＸｉａｏｌｏｎｇ（ＤｅｐａｒｔｍｅｎｔｏｆＡｐｐｌｉｅｄＣｈｅｍｉｓｔｒｙ，...

关键词： carbon dioxide fossil fuel global climate change greenhouse gas.

Meet Our New Associate Editors

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Chinese Journal of chemistry 2024年第11期42卷 1319-1321页

作者： Editorial Office of Chinese Journal of chemistry 不详

Associate Editor Dehui Deng Professor The State Key Laboratory of Catalysis Dalian Institute of Chemical Physics,Chinese Academy of Sciences,china(+86)0411-82463870,dhdeng@***,https:/***/.Education:2003-2007 B.S.,Light Industry Engineering and National Economy Management,Sichuan University.2007-2013 Ph.D.,Physical chemistry,Dalian Institute of Chemical Physics,Chinese Academy of Sciences(Supervisor:*** Bao and *** Pan).

关键词： Dalian Economy Associate

One of the origins for curved edges of polyethylene singlecrystals

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Chinese Science Bulletin 1998年第7期43卷 564-568页

作者： YAN Deyue department of applied chemistry, Shanghai Jiaotong University, Shanghai 200030, china department of applied chemistry Shanghai Jiaotong University Shanghai China

A new concept of lattice strain was developed to explain the origin of the curved edges of polyethylene (PE) single crystals. In the crystallization of PE from poor solvents, the length of critical nucleus generated is rather short. The thin lamellae are thermodynamically unstable especially at high temperature. Thereby, during the growth of PE single crystals an annealing process is going on simultaneously, which results in a reduction of thickness from the center to growing faces of lamellae. It is known that the thinner the single crystals, the bigger the unit-cell dimensions. Consequently, unit-cells in the central part of single crystals formed are somewhat smaller than those in the outer part of the same crystals. In order to fit in with the gradual enlargement of unit-cell dimensions from the center to the edges of single crystals, the lattice planes of a faster growing dominant {110} deform to be a set of parallel arcs of concentric circles. Accordingly, the edge of a slower growing subordinate {200} becomes a part of an ellipse with obvious curvature while the edge of a {110} sector remains almost straight for it is a small part of a large circumference.

关键词： PE single crystals curved lateral habit lattice strain.

Corrosion behavior of Zn-Ni-Al_2O_3 composite coating

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Rare Metals 2006年第z2期25卷 174-178页

作者： ZHENG Huanyu, AN Maozhong, and LU Junfeng department of applied chemistry, Harbin Institute of Technology, Harbin 150001, china [a]department of applied chemistry Harbin Institute of Technology Harbin 150001 China

The corrosion behavior and anti-corrosion mechanism of the Zn-Ni-Al2O3 composite coating were investigated by SEM, EDS and XPS. The results indicate that the corrosion type of the Zn-Ni-Al2O3 coatings in neutral 5 wt.% NaCl solution is uniform corrosion. The presence of compact and uniformly dispersed nano alumina particles substantially inhibits the corrosion of Zn-Ni-Al2O3 composite coatings. In the initial corrosion stage, the corrosive products of Zn-Ni matrix form a compact ZnCl2·4Zn(OH)2 layer. With the development of corrosion, some nano alumina particles are embedded and form a Ni enrichment layer. In Ni enrichment layer, Ni presents as Ni and NiO.

关键词： Zn-Ni nano alumina corrosion composite electrodeposition

AN INCREMENTAL METHOD OF X-RAY DIFFRACTION QUANTITATIVE PHASE ANALYSIS OF SAMPLESCONTAINING AMORPHOUS MATERIAL

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Acta Metallurgica Sinica(English Letters) 1997年第1期10卷 35-38页

作者： G. Chu(department of applied chemistry Fushun Petroleum Institute, Fushun 113001, china) Fushun Petroleum Inst Fushun China

A new method for quantitative X-ray diffraction phase analysis of a powder misture has been developed according to Popovic's doping method. The weight fraction of amorphous material in the analysed sample is obtained. For a multicomponent system in which (n-2) pure phases are added into an n-phase compnent sample and theweight fractions of all n phases can be determined by the method. The test results of confirmation agree well with the theory.

关键词： X-ray diffraction quantitative phase analysis amorphous material mass absorption coefficient