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An editorial Announcement on Starting Using Volume Numbers

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中南大学学报(自然科学版) 1987年第2期 237-237页

作者： The editorial department of the journal of central south university of technology The editorial department of the journal of central south university of technology

According to the regulations of the Natiotal Standard GB3179-82, "LayoutInstructions for Academic Periodicals of Science and technology" of the P. R. C.,volume number will be used starting 1987. The issue numbers already used will becontinued but to it a volume number will be added. Also, to all the issues of thejournal published before 1987 a volume number will be given as follows:

关键词： In 曰目 An editorial Announcement on Starting Using Volume Numbers

NOTICE SOLICITING SUBSCRIPTIONS TO“journal OF central-south INSTITUTE OF MINING AND METALLURGY”

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中南大学学报(自然科学版) 1988年第3期 349-349页

作者： editorial department of journal of central south university of technology

The journal of the central-south Institute of Mining and Metallurgy(journalof CSIMM)is a comprehensive academic publication with stress on nonferrousmetals.

关键词： journal OF central-south INSTITUTE OF MINING AND METALLURGY NOTICE SOLICITING SUBSCRIPTIONS TO

An editorial Announcement on Starting Using Volume Numbers

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中南大学学报(自然科学版) 1987年第5期 599-599页

作者： The editorial department of the journal of central south university of technology

According to the regulations of the National Standard GB3179-82, "Layout Instructions for Academic Periodicals of Science and technology" of the P. R. C., volume number will be used starting *** issue numbers already used will be continued but to it a volume number will be added. Also, to all the issues of the

关键词： An editorial Announcement on Starting Using Volume Numbers

An editorial Announcement on Starting Using Volume Numbers

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中南大学学报(自然科学版) 1987年第6期 725-725页

作者： The editorial department of the journal of central south university of technology

According to the regulations of the National Standard GB3179-82,"Layout Instructions for Academic Periodicals of Science and technology" of the P. R. C., volume number will be used starting *** issue numbers already used will be continued but to it a volume number will be added. Also, to all the issues of the journal published before 1987 a volume number will be given as follows:

关键词： In An editorial Announcement on Starting Using Volume Numbers

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执行主编与高校学报的质量控制

吉首大学学报 1999年第4期20卷 94-96页

作者：王璐中南工业大学学报编辑部湖南长沙410083

从高校学报的政治质量、学术质量、编辑出版质量以及编辑部现代化建设。

关键词：质量控制高校学报执行主编政治质量学术质量

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) Cent S Univ Technol Powder Met Res Inst Changsha 410083 Peoples R China Cent S Univ Technol Dept Mat Sci & Engn Changsha 410083 Peoples R 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

METALLOGENIC CHARACTERISTICS AND OREPROSPECTINGFUTURE OF PRECAMBRIAN GOLD DEPOSITSIN MUFUJIULING DISTRICT

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journal of central south university 1996年第1期8卷 11-13页

作者： Wu Yanzhi(department of Geology, central south university of technology,Changsha 410083, China) 1. department of Geology Central South University of Technology 410083 Changsha China

MufuJiuling district is an important placer gold producing land since the ancient time. In recent years, some primary gold deposits and mineralizations, e. g., Huangjindong and Tulongshan gold deposits, have been found. But the metallogenic conditions and regularities as well as the oreprospecting future remain to be recognized. Through the study on the metallogenic background and condition, the auriferous source bed and the mineralizing characteristics, three types of primary gold deposits are confirmed to be prospective in this district and some key problems about their prospecting and evaluating are put forward.

关键词： primary gold deposit PreCambrian age metallogenic marker

DRILLING OF EXTRA-HARD FORMATIONS

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journal of central south university 1996年第1期8卷 33-35页

作者： Lu Fan(department of Geology, central south university oftechnology, Changsha 410083, China) 1. department of Geology Central South University of Technology 410083 Changsha China

The reason for bit slipping in extrahard formations has been analysed, and a new type of antislipping bit for extrahard formations have been recommended.

关键词： bit slipping extrahard formation diamond〖J

SYNTHESES AND UV SPECTRA OF SALICYLADEHYDE DERIVATIVES

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journal of central south university 1998年第2期10卷 65-67页

作者： Tang Ruiren (department of Chemistry, central south university of technology,Changsha 410083,China) 1. department of Chemistry Central South University of Technology 410083 Changsha China

Nine 5 (β substituted stylryl) salicyladehyde derivatives were prepared by PTC Witting reactions in the paper . The stereochemistry of the Witting reactions and the substituted effect on the UV spectra of salicyladehyde derivaties have been reported . It was observed that the spectra undergo a red shift as the conjugative effect of substituted becomes stronger . A good linear relationship between the shift of UV of p substituted compounds and conjugation effect was *** showed that the Hammett equation may be applied to the UV frequencies of the title compounds.

关键词： substituted strlrylsalicyladehyde derivatives substituted effect Witting reaction UV spectra