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Calculation of Thermodynamic Properties from Phase Diagram of the Pb-Zn System

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Journal of Materials Science & Technology 1997年第3期13卷 233-234页

作者： Zeng, WM chen, ny Qiu, GF Shanghai Institute of Metallurgy Chinese Academy of Sciences Shanghai 200050 China

The formulas for obtaining the interaction parameters of the liquid solution were first deduced from the immiscible phase diagram of binary system. Then, the relationships between activity coefficients and interaction parameters of the binary system were also deduced. Finally, thermodynamic properties of the Pb-Zn system were calculated by using these formulas.

关键词： Lead alloys

Chemical pattern recognition applied to materials optimal design and industry optimization

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Chinese Science Bulletin 1997年第10期42卷 793-799页

作者： chen, ny Li, CH Qin, P Shanghai Institute of Metallurgy Chinese Academy of Sciences Shanghai China

The multi-dimensional spaces, spanned by the dimensionless numbers describing the equilibrium states or the macroscopic chemical kinetics of complicated chemical reaction systems, have been used for the data processing of the process-es in materials preparation or industrial production. It has been found that there are four common topological types of the rela-tions between the optimization zone and the operation zone in the multi-dimensional spaces. Various computation methods us-ing pattern recognition, artificial neural network and genetic algorithm are used for model-building and optimization strategy searching. An integrated system named KDPAG has been built for materials optimal design or industrial optimization. Appli-cation to chemical, petrochemical and metallurgical industries and materials optimal design gives good results.

关键词： chemical pattern recognition materials design industrial optimization.

A Hyper-ellipsoid Model for Metallurgical Process Modelling by Genetic Algorithm

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Journal of Materials Science & Technology 1998年第6期14卷 567-568页

作者： Li, JF Li, CH chen, ny Lu, T Chinese Acad Sci Shanghai Inst Met Shanghai 200050 Peoples R China Univ SW Louisiana Lafayette LA 70504 USA

A hyper-ellipsoid model, using genetic algorithm as method of computation, has been proposed to be used in certain metallurgical processes. It is especially suitable for the modelling of the metallurgical processes wi... 详细信息

关键词： Metallurgy

STUDIES　ON　THE　ANIONIC　SPECIES　OF　SODIUM　ALUMINATE　SOLUTIONS　OF　LOW　CAUSTIC　RATIOS

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Chinese Chemical Letters 1995年第10期6卷 885-886页

作者： Cao, YL Liu, HL chen, ny Henan Normal Univ Dept Chem Xinxiang 453002 Peoples R China Acad Sinica Shanghai Inst Met Shanghai 200050 Peoples R China

UV and Raman spectra were used in the studies of anionic species in sodium alundnate *** absorption peaks near 233nm and 270nm in UV spectra were found and assigned to Al(OH)4 and[(HO)3 Al-O- Al(OH)3 ] 2 -respectively, while the results of Raman spectra measurements and quantum chemicalcalculations by using MNDO and DV-Xa methods were in good agreement with the above conclusions.

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Some Regularities of Continuous Solid Solutions of Alloy Systems

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Journal of Materials Science & Technology 1997年第5期13卷 431-434页

作者： Guo, JK Li, CH Qin, P Liu, HL chen, ny CHINESE ACAD SCI SHANGHAI INST METSHANGHAI 200050PEOPLES R CHINA

A modified Miedema model and pattern recognition technique are used to establish the criteria for the formation of continuous solid solutions in alloy systems, and to study the occurrence of the melting temperature mi... 详细信息

关键词： Binary alloys

FORMABILITY CRITERIA OF INTERMETALLIC COMPOUNDS CONTAINING TRANSITION METAL SYSTEMS

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中国有色金属学会会刊：英文版 1997年第3期7卷 136-139页

作者： Guo, J Li, CH Qin, P chen, ny Cao, Y Qiu, GF CHINESE ACAD SCI SHANGHAI INST METSHANGHAI 200050PEOPLES R CHINA SUZHOU UNIV DEPT CHEMSUZHOU 215006PEOPLES R CHINA

ＦＯＲＭＡＢＩＬＩＴＹＣＲＩＴＥＲＩＡＯＦＩＮＴＥＲＭＥＴＡＬＬＩＣＣＯＭＰＯＵＮＤＳＣＯＮＴＡＩＮＩＮＧＴＲＡＮＳＩＴＩＯＮＭＥＴＡＬＳＹＳＴＥＭＳＧｕｏＪｉｎ，ＬｉＣｈｏｎｇｈｅ，ＱｉｎＰｅｉ，ＣｈｅｎＮｉａｎｙ... 详细信息

ＦＯＲＭＡＢＩＬＩＴＹＣＲＩＴＥＲＩＡＯＦＩＮＴＥＲＭＥＴＡＬＬＩＣＣＯＭＰＯＵＮＤＳＣＯＮＴＡＩＮＩＮＧＴＲＡＮＳＩＴＩＯＮＭＥＴＡＬＳＹＳＴＥＭＳＧｕｏＪｉｎ，ＬｉＣｈｏｎｇｈｅ，ＱｉｎＰｅｉ，ＣｈｅｎＮｉａｎｙｉＳｈａｎｇｈａｉＩｎｓｔｉｔｕｔ...

关键词： formability criterion intermetallic compound transition element

Two new diterpenoids from Isodon eriocalyx

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Chinese Chemical Letters 1999年第1期10卷 31-32页

作者： chen, ny Tian, MQ Wu, R Sun, HD Li, CM Lin, ZW Lanzhou Univ Natl Lab Appl Organ Chem Lanzhou 730000 Peoples R China Acad Sinica Kunming Inst Bot Lab Phytochem Kunming 650204 Peoples R China

Two new diterpenoids, maoecrystal U and epi-maoecrystal P were isolated from the leaves of Isodon eriocalyx. Their structures were determined as 6 beta-acetoxy-15 beta-hydroxy-3 alpha, 20epoxy-ent-kaur-16-ene-1,7-dione 1 and 16 (s)-methoxymethyl-6 beta,7 beta-dihydroxy-7 alpha,20-epoxy-ent-kaur-2,3-ethenylene-1, 15-dione 2 respectively, by spectroscopic methods.

关键词： Isodon eriocalyx ent-kaurenoids maoecrystal U epi-maoecrystal P

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沸石的工业化催化应用

石油化工译丛 1989年第1期10卷 1-11页

作者： chen.,ny 徐永芳

维普期刊数据库评论

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沸石在工业催化上的应用

石油炼制译丛 1989年第3期 15-20页

作者： chen.,ny 胡德明