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中国有色金属学会会刊：英文版 1996年第3期6卷 79-85,118页

作者： Gan Weiping(Department of Materials Science and Engineering, central south university of Technology, changsha 410083. Xu Xingyao (Department of Applied Mathematics and Applied Softwares, central south university of Technology, changsha 410083. Department of Materials Science and Engineering Central South University of Technology Changsha 410083 China Department of Applied Mathematics and Applied Softwares Central South University of Technology Changsha 410083 China

ＥＳＴＡＢＬＩＳＨＭＥＮＴＡＮＤＡＰＰＬＩＣＡＴＩＯＮＳＯＦＭＡＴＨＥＭＡＴＩＣＡＬＭＯＤＥＬＳＦＯＲＣＯＮＣＥＮＴＲＡＴＩＯＮＤＩＳＴＲＩＢＵＴＩＯＮＳＩＮＭｏ－Ｆｅ－Ｎｉ－ＣｏＤＩＦＦＵＳＩＯＮＱＵＡＲＴＥＲＮＡ... 详细信息

ＥＳＴＡＢＬＩＳＨＭＥＮＴＡＮＤＡＰＰＬＩＣＡＴＩＯＮＳＯＦＭＡＴＨＥＭＡＴＩＣＡＬＭＯＤＥＬＳＦＯＲＣＯＮＣＥＮＴＲＡＴＩＯＮＤＩＳＴＲＩＢＵＴＩＯＮＳＩＮＭｏ－Ｆｅ－Ｎｉ－ＣｏＤＩＦＦＵＳＩＯＮＱＵＡＲＴＥＲＮＡＲＹ（Ⅰ）Ｅｓｔａｂｌｉｓｈｍｅｎ...

关键词： Mo-Fe-Ni-Co diffusion quarternary mathematical models concentration distribution B-type spline functions

CAVABILITY CLASSIFICATION MODEL IN BLOCK CAVING

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中国有色金属学会会刊：英文版 1996年第3期6卷 5-9页

作者： Wang Liguan(Deportment of Resources Exploitation Engineering,central south university of Technology, changsha 410083. CENT S UNIV TECHNOL DEPT RESOURCES EXPLOITAT ENGNCHANGSHA 410083PEOPLES R CHINA

ＣＡＶＡＢＩＬＩＴＹＣＬＡＳＳＩＦＩＣＡＴＩＯＮＭＯＤＥＬＩＮＢＬＯＣＫＣＡＶＩＮＧ￥ＷａｎｇＬｉｇｕａｎ（ＤｅｐｏｒｔｍｅｎｔｏｆＲｅｓｏｕｒｃｅｓＥｘｐｌｏｉｔａｔｉｏｎＥｎｇｉｎｅｅｒｉｎｇ，ＣｅｎｔｒａｌＳｏ... 详细信息

ＣＡＶＡＢＩＬＩＴＹＣＬＡＳＳＩＦＩＣＡＴＩＯＮＭＯＤＥＬＩＮＢＬＯＣＫＣＡＶＩＮＧ￥ＷａｎｇＬｉｇｕａｎ（ＤｅｐｏｒｔｍｅｎｔｏｆＲｅｓｏｕｒｃｅｓＥｘｐｌｏｉｔａｔｉｏｎＥｎｇｉｎｅｅｒｉｎｇ，ＣｅｎｔｒａｌＳｏｕｔｈＵｎｉｖｅｒｓｉｔｙｏｆＴｅ...

关键词： block caving cavability classification of orebody rock mass quality estimation

Amelioration of the mineral compositions and microstructures of the special ore sinters

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Journal of central south university of Technology 2001年第1期8卷 29-33页

作者： FU Ju ying, WANG Li guang (Department of Mineral Engineering, central south university, changsha 410083. china) 1. Department of Mineral Engineering Central South University 410083 Changsha China

Mineral compositions and microstructures of fluorine bearing magnetite concentrate and vanadium titanomagnetite concentrate are studied. The results show that a boride and a catalytic oxidation agent have great effects on ameliorating the mineral compositions and microstructures of these sinters, and the catalytic agent is more effective. Comparing these two kinds of ores, the performance of fluorine bearing magnetite concentrate is better. Addition of 0.01% catalyst into fluorine bearing magnetite concentrate can increase calcium ferrite content from 15% 20% up to 3.% 3.%, and its microstructure changes from large cavities and thin framework into intermediate cavities and thick framework, and the microcracks disappear.

关键词： calcium ferrite catalyst vanadium titanomagnetite concentrate fluorine bearing magnetite concentrate sinter

Effect of Trace Sc and Zr on the Mechanical Properties and Microstructure of A1 Alloy 2618

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Journal of Materials Science & Technology 2000年第4期16卷 416-420页

作者： Kun YU, Songrui LI and Wenxian LI (Department of Materials Science and Engineering, central south university of Technology, changsha 410083. china) Department of Materials Science and Engineering Central South University of Technology Changsha 410083 China

An experimental 2618(Al-Cu-Mg-Fe-Ni) alloy added with trace Sc and Zr was prepared by ingot metallurgy (IM) method. The aging behavior of the alloy was studied by Vickers hardness measurement at 200℃ and 3.0℃. and the tensile properties of alloy specimens were measured at 20℃, 200℃, 250℃ and 3.0℃. The microstructure was observed by using optical microscope, SEM and TEM. It was found that the addition of Sc and Zr to 2618 alloy resulted in a primary Al_3.Sc,Zr) phase which could refine the grain because it acts as nuclei of heterogeneous crystallization in the melt during solidification. The secondary Al_3.Sc,Zr) particles were full coherent with matrix and had obvious precipitation hardening effect. They also made the S' phase precipitate more homogeneous. So the strength of alloy increases at both ambient and elevated temperatures without a decrease of ductility. The ductile fracture of alloy occurs by microvoid nucleation, growth and coalescence, so the microvoid coalescence is the dominant fracture mechanism.

关键词： Sc Zr Effect of Trace Sc and Zr on the Mechanical Properties and Microstructure of A1 Alloy 2618

HOMOGENIZATION TREATMENT OF Mg-Al-Zn(MM)MAGNESIUM ALLOY INGOTS

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Acta Metallurgica Sinica(English Letters) 2002年第6期15卷 545-550页

作者： K. Yu and W.X. LiCollege of Materials Science and Engineering, central south university, changsha 410083. china College of Materials Science and Engineering Central South University

The Mg-Al-Zn series AZ3. and AZ3.+MM alloys are homogenized at 673. 723.and 753. respectively. The hardness of alloy ingots at different heat-treated states is measured and the micro structures are observed. The optim... 详细信息

关键词： magnesium alloy homogenization diffusion

Quantitative detection of ING1 mRNA under different gene regulation based on molecular beacon

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Chinese Science Bulletin 2006年第17期51卷 2059-2064页

作者： LIU Bin1,2,3.4, WANG Kemin1,2,3.4, XIAO Zhiqiang5,6, WANG Wei1,3.4, TAN Weihong1,2,3.4, SUN Yi5,6, TANG Hongxing1,3.4 & YANG Xiaohai1,3.41. State Key Laboratory of Chemo/Biosensing and Chemometrics, Hu- nan university, changsha 410082, china 2. Life Science and Biotechnology Institute, Hunan university, Chang- sha 410082, china 3. Chemistry and Chemical Engineer College, Hunan university, changsha 410082, china 4. Hunan Engineering Research Center for Bio-Nanotechnology, Hunan university, changsha 410082, china 5. Medical Experiment Research Center, Xiangya Hospital, central south university, changsha 410008, china 6. Key Laboratory of Cancer Proteomics of Chinese Ministry of Health, changsha 410008, china State Key Laboratory of Chemo/Biosensing and Chemometrics Hunan University Changsha China Life Science and Biotechnology Institute Hunan University Changsha China Chemistry and Chemical Engineer College Hunan University Changsha China Hunan Engineering Research Center for Bio-Nanotechnology Hunan University Changsha China Medical Experiment Research Center Xiangya Hospital Central South University Changsha China Key Laboratory of Cancer Proteomics of Chinese Ministry of Health Changsha China

The effects of drug treatment, gene transfection, and p53.RNA interference (RNAi) on level of ING1 mRNA in tumor cells were quantitatively detected with the help of ING1 molecular beacon (MB)/cRNA standard curve based on MB detection technology. Results showed that the level of ING1 mRNA could be upregulated by 5-FU treatment or ING1 transfection in low expression cell line of MCF-7 and be inhibited by silencing p53.with RNAi technology in normal expression cell line of CNE2. The level of ING1 varied from 7.7×10?16 to 53.4× 10?16 mol/μg total RNA of tumor cells. The results not only provided evidence for the regulation effects of gene expression but also were applied to investigat- ing the interaction of multigenes on signal transduc- tion pathway.

关键词： ING1 RT-PCR 定量分析分子信号 mRNA

A Prediction of the Excess Partial Molar Free Energies of MgCl_2 in the KCI-MgCl_2-LiCl Molten Salt System Containing MgCl_2 below 0.5 from Thermodynamic Properties of Binary Systems

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Journal of Materials Science & Technology 2000年第1期16卷 85-87页

作者： Quanru ZHANG, Yuangao LI and Zheng FANG (Department of Chemistry, central south university of Technology, changsha 410083. china) Department of Chemistry Central South University of Technology Changsha 410083 China

The thermodynamical properties of MgCl_2 in KCI-MgCl_2-LiCl molten electrolytes containing MgCl_2 below 0.5 (mole fraction, the same below) have been determined from the interchange energies of two binary systems KCI-MgCl_2 and LiCI-MgCl_2, by means of a model on the assumptions that the electrolytes in the solution are treated as independent particles instead of their ion forms and the interchange energy between the component pair KCI-LiCl is ignored when compared with those of component pairs KCl-MgCl_2 and MgCl_2-LiCl. The interchange energies, wKCl-MgCl_2 and wMgcCl_2-Licl, are obtained as-70000 and -13.00 ***-1, from the corresponding binary solutions, respectively.

关键词： KCI Free A Prediction of the Excess Partial Molar Free Energies of MgCl2 in the KCI-MgCl2-LiCl Molten Salt System Containing MgCl2 below 0.5 from Thermodynamic Properties of Binary Systems LiCl

INTELLIGENT CONTROL FOR ELECTRO-HYDRAULIC PROPORTIONAL POSITION SERVO SYSTEM

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中国有色金属学会会刊：英文版 1996年第2期6卷 132-137页

作者： Luo An Gui Weihua (Department of Automatic Control Engineering,central south university of Technology, changsha 410083. CENT S UNIV TECHNOL DEPT AUTOMAT CONTROL ENGNCHANGSHA 410083PEOPLES R CHINA

ＩＮＴＥＬＬＩＧＥＮＴＣＯＮＴＲＯＬＦＯＲＥＬＥＣＴＲＯ－ＨＹＤＲＡＵＬＩＣＰＲＯＰＯＲＴＩＯＮＡＬＰＯＳＩＴＩＯＮＳＥＲＶＯＳＹＳＴＥＭＬｕｏＡｎ；ＧｕｉＷｅｉｈｕａ（ＤｅｐａｒｔｍｅｎｔｏｆＡｕｔｏｍａｔｉｃＣｏ... 详细信息

ＩＮＴＥＬＬＩＧＥＮＴＣＯＮＴＲＯＬＦＯＲＥＬＥＣＴＲＯ－ＨＹＤＲＡＵＬＩＣＰＲＯＰＯＲＴＩＯＮＡＬＰＯＳＩＴＩＯＮＳＥＲＶＯＳＹＳＴＥＭＬｕｏＡｎ；ＧｕｉＷｅｉｈｕａ（ＤｅｐａｒｔｍｅｎｔｏｆＡｕｔｏｍａｔｉｃＣｏｎｔｒｏｌＥｎｇｉｎｅｅｒｉｎｇ，...

关键词： intelligent control pole placement digital flow compensation electrohydraulic proportionalControl

MOTION ANALYSIS AND DESIGN OF ACCUMULATOR FOR HYDRAULIC ROCK DRILL

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中国有色金属学会会刊：英文版 1996年第2期6卷 148-151页

作者： Liu Shixun(College of Mechanical and Electrical Engineering, central south university of Technology, changsha 410083. CENT S UNIV TECHNOL COLL MECH & ELECT ENGNCHANGSHA 410083PEOPLES R CHINA

ＭＯＴＩＯＮＡＮＡＬＹＳＩＳＡＮＤＤＥＳＩＧＮＯＦＡＣＣＵＭＵＬＡＴＯＲＦＯＲＨＹＤＲＡＵＬＩＣＲＯＣＫＤＲＩＬＬＬｉｕＳｈｉｘｕｎ（ＣｏｌｌｅｇｅｏｆＭｅｃｈａｎｉｃａｌａｎｄＥｌｅｃｔｒｉｃａｌＥｎｇｉｎｅｅｒｉ... 详细信息

ＭＯＴＩＯＮＡＮＡＬＹＳＩＳＡＮＤＤＥＳＩＧＮＯＦＡＣＣＵＭＵＬＡＴＯＲＦＯＲＨＹＤＲＡＵＬＩＣＲＯＣＫＤＲＩＬＬＬｉｕＳｈｉｘｕｎ（ＣｏｌｌｅｇｅｏｆＭｅｃｈａｎｉｃａｌａｎｄＥｌｅｃｔｒｉｃａｌＥｎｇｉｎｅｅｒｉｎｇ，ＣｅｎｔｒａｌＳｏｕｔｈＵｎ...

关键词： hydraulic accumulator diaphragm service life stretching ratio parameter design,motion analvsis

BREAKAGE MECHANISM OF TUNGSTEN BASED ALLOY BLOCK FOR ELECTRO-HEAT UPSETTING

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中国有色金属学会会刊：英文版 1993年第3期3卷 56-60页

作者： Fan, Jinglian Zhao, Muyue Xu, Guofu central-south university of Technology, {3. 410083. china

The breakage mechanism of W-Ni-Fe alloy in the process of electro-heat upsetting studied both theoretically and experimetnally, and also the behaviors of crack formation and propagation were analysed. Alloy suffers from corrosion and thermal-mechanical fatigue mutual function. Simultaneously, the practical ways to improve the anvil life was discussed.

关键词： electro-heat upsetting anvil heavy metal thermal-mechanical fatigue corrosion fatigue