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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

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.

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

A STUDY OF DIRECTIONAliTY OF LATENT HARDENING BEHAVIOR IN ALUMINIUM SINGLE CRYSTALS

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Acta Mechanica Solida Sinica 1996年第3期9卷 246-252页

作者： Wang, MZ Shi, L li, ch Xiao, JM UNIV SCI & TEchNOL BEIJING DEPT MAT PHYSBEIJING 100083PEOPLES R CHINA

By defining the yield stress in a latent hardening test as the first deviation from the elastic straight line, the yielding and hardening behavior on a latent system in the positive and negative slip direction was studied in aluminium single crystals. It is shown that the yield stresses on both the positive and negative latent systems are about equal to or a little lower than the maximum resolved shear stress in the primary test, but much higher than that of the active system. The Influence of relative orientation and prestrain on latent hardening and initial work-hardening in the secondary test was also investigated, and it was found that there is a considerable effect on initial work-hardening, but none on latent hardening. With reasonable approximation, a hardening rule for single crystal could be proposed from the experimental results, that is, except for the yield stress on the system negative to the active system that is very low, hardening on the other systems is nearly the same as self-hardening.

关键词： latent hardening work-hardening Bauschinger effect aluminium single crystal plastic deformation

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

Embolization of brain arteriovenous malformations with squid co-polymer embolic material:Initial experience

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Journal of Interventional Medicine 2023年第4期6卷 175-178页

作者： li Shyan ch'ng Zulkifli Zaki Ahmad Sobri Muda Radiology Department Faculty of Medicine UiTMSungai BulohMalaysia Radiology Department Hospital Sungai BulohSungai BulohMalaysia Radiology Department HSAASFaculty of Medicine and Health SciencesUniversiti Putra MalaysiaMalaysia Radiology Department Faculty of Medicine UiTM Sungai Buloh47000Malaysia

Objective:To analyze the safety and effectiveness of the ethylene-vinyl alcohol copolymer(EVOH)liquid embolic agent Squid(Emboflu,Switzerland)for the treatment of brain arteriovenous *** and procedures:Between April 2015 and July 2017,46 embolization treatments for brain arteriovenous malformations(BAVM)were performed in 25 patients using two Squid formulations(18 and 12).Six female and 19 male patients with a mean age of 34 years(range,9–62 years)were included.A total of 46 procedures were *** BAVMs were classified as Spetzler-Martin gradeⅡin 4 procedures,Ⅲin 27 procedures,and 1V in 15 *** the 25 patients,15 presented with hemorrhage,5 with seizures,and 5 with headache and *** BAVMs were located in the temporal lobe in 5 patients,parietal lobe in 7 patients,frontal lobe in 3 patients,posterior fossa in 6 patients,basal ganglia in 3 patients,and parasagittal lobe in 1 ***:The obliteration rate of the BAVMs ranged from 10%to 100%,with a mean of 33%.Most patients underwent their first or second embolization *** patients(8%)developed intracranial bleeding post procedure,with one death(2%).One patient(2%)experienced a seizure during the procedure;however,no intracranial bleeding was *** patients(15%)experienced perforations during catheter *** case(2%)of fractured catheter was recorded,but no significant complications were *** average volume of copolymer injected was 0.6 ml per *** procedures used the Squid-12 formulation,29 procedures used the Squid-18 formulation,and 3 procedures used a combination of Squid-12 and-18 ***:Squid is a safe and effective embolic agent for treating BAVMs.

关键词： Brain arteriovenous malformation Embolization Ethylene vinyl alcohol copolymer SQUID

STRUGGLE BETWEEN CONFUCIAN AND LEGAliST SchOOLS AND SCIENTIFIC AND TEchNOLOGICAL DEVELOPMENT IN ANCIENT chINA

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Science in china,Ser.A 1974年第6期 709-716页

作者：李群

For more than two thousand years, the struggle between the line of the Confucian School and that of the Legalist School has had a profound influence upon all spheres of china’s social life and upon the development of... 详细信息

关键词： STRUGGLE BETWEEN CONFUCIAN AND LEGAliST SchOOLS AND SCIENTIFIC AND TEchNOLOGICAL DEVELOPMENT IN ANCIENT chINA line

反常蓝移单电子锂键Y…li—ch_3[Y=ch_3,ch_2ch_3,ch(ch_3)_2,C(ch_3)_3]体系的结构与性质

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物理化学学报 2010年第2期26卷 429-435页

作者：李志锋朱元成左国防唐慧安李红玉天水师范学院生命科学与化学学院化学系甘肃天水741001

在密度泛函理论B3LYP/6-311++G(d,p)及MP2/6-311++G(d,p)水平上研究了单电子锂键复合物Y…li—ch3[Y=ch3,ch2ch3,ch(ch3)2,C(ch3)3]的结构与性质.结果表明,三种单电子锂键复合物H3ch2C…li—ch3(II),(H3C)2HC…li—ch3(III)和(H3C)3C…li—ch3(IV)单电子锂键强度依II(-***-1)li—ch3,复合物II,III及IV中li—ch3键虽然拉长,但其伸缩振动频率出现了反常的蓝移,且蓝移程度依次增大,分别为15.1,18.9和20.5cm-1.供电子体中甲基数目的递增加强了这种单电子弱键作用,而若电子受体liH中H被ch3取代,则减弱了弱键相互作用.利用自然键轨道(NBO)及分子中原子(AIM)分析进一步对体系的弱键相互作用进行了探讨.

关键词：单电子锂键单电子氢键单电子卤键 NBO AIM

li^+附着ch_(3-n)F_nO_2过氧自由基:络合物li^+-ch_(3-n)F_nO_2(n=0～3)结构与性质的研究(英文)

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量子电子学报 2007年第2期24卷 146-152页

作者：程爽李海洋中国科学院安徽光学精密机械研究所安徽合肥230031 中国科学院大连化学物理研究所辽宁大连116023

采用了从头算分子轨道理论(MP2,非限性的二级微扰理论)和密度泛涵理论(B3LYP),分别在6-31G(d, p),6-311G(d,p),6-311+G(d,p),6-311G(2d,p),和6-311+G(2df,2p)基组上优化ch3-nFnO2-li+(n=0-3)的几何结构,计算出了相关的NBO电荷分布和锂离子相对于自由基ch3-nFnO2的亲和能。并在同一水平上计算了自由基ch3-nFnO2和络合物ch3-nFnO2-li+的相关伸缩振动频率。ch3-nFnO2在UB3LYP／6-311G(d,p)得到的振动频率与实验值符合得很好。根据相关的文献报道,我们运用从头算分子轨道理论和密度泛涵理论计算出的锂离子相对于ch3-nFnO2的亲和能都能够表明络合物ch3-nFnO2-li+在气态下能以一种稳定的物种形态被离子附着质谱检测。

关键词：光谱学离子附着质谱分子轨道理论密度泛涵理论氟甲基过氧自由基