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世界社会科学 2003年第1期 105-107页

作者： j.m.巴德,李红霞〔美〕

Superelasticity and Tunable Thermal Expansion across a Wide Temperature Range

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journal of materials Science & Technology 2016年第8期32卷 705-709页

作者： Y.L. Hao H.L. Wang T. Li j.m. Cairney A.V. Ceguerra Y.D. Wang Y. Wang D. Wang E.G. Obbard S.j. Li R. Yang Shenyang National Laboratory for materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 China School of Aerospace Mechanical & Mechatronic Engineering University of Sydney Sydney NSW2006 Australia Australian Centre for microscopy and microanalysis University of Sydney Sydney HSW2006 Australia State Key Laborotory for Advanced metals and materials University of Science and Technology Beijing Beijing 100083 China State Key Laboratory for mechanical Behavior of materials and Frontier Institute of Science and Technology Xi'an Jiaotong Univemity Xi'an 710049 China Department of materials Science and engineering Ohio State University Columbus OH 43210 USA Department of Electrical engineering and Telecommunications University of New South Wales Sydney NSW2052 Australia

materials that undergo a reversible change of crystal structure through martensitic transformation （mT） possess unusual functionalities including shape memory, superelasticity, and low/negative thermal ex- pansion. These properties have many advanced applications, such as actuators, sensors, and energy conversion, but are limited typically in a narrow temperature range of tens of Kelvin. Here we report that, by creating a nano-scale concentration modulation via phase separation, the mT can be rendered continuous by an in-situ elastic confinement mechanism. Through a model titanium alloy, we demon- strate that the elastically confined continuous mT has unprecedented properties, such as superelasticity from below 4.2 K to 500 K, fully tunable and stable thermal expansion, from positive, through zero, to negative, from below 4.2 K to 573 K, and high strength-to-modulus ratio across a wide temperature range. The elastic tuning on the mT, together with a significant extension of the crystal stability limit, provides new opportunities to explore advanced materials.

关键词： Ti alloy Superelasticity Thermal expansion behavior Temperature characteristic

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喹诺酮类抗菌剂N_1位新的定量构效关系

国外医药（抗生素分册） 1990年第1期11卷 48-57页

作者： Domagala j.m. 李卓荣

由于喹诺酮类药物(如图1之结构式1所示)抗菌活性强,且口服有效,而引起人们极大的兴趣。然而,当许多优秀抗菌剂被开发(图1)的同时,只发表了少数几篇有关构效关系的文章。一般认为6位氟取代是所有最强抗菌剂的共同特点。对许多R_7取代物... 详细信息

由于喹诺酮类药物(如图1之结构式1所示)抗菌活性强,且口服有效,而引起人们极大的兴趣。然而,当许多优秀抗菌剂被开发(图1)的同时,只发表了少数几篇有关构效关系的文章。一般认为6位氟取代是所有最强抗菌剂的共同特点。对许多R_7取代物进行研究,活性变化较大,然而,Koga,matsumoto及作者的系统研究清楚表明,R_7为五员或六员环时活性较好。关于R_8的研究很少。喹诺酮类的早期发展阶段。

关键词：喹诺酮类抗菌剂定量构效关系

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作者： (英)j.m.马丁

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科学环境导论

科学环境导论

1987年

作者： (美)j.m.莫兰

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异乡人的国度

作者： (南非)j.m. 库切

An unusual mass arising from the vas deferens

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Asian journal of Andrology 2002年第3期4卷 236-236页

作者： A.Haq j.m. Orrell j.R.W. Parry Departments of Urology and Pathology the Ipswich Hospital NHS Trust Ipswich UKDepartments of Urology and Pathology the Ipswich Hospital NHS Trust Ipswich UKDepartments of Urology and Pathology the Ipswich Hospital NHS Trust Ipswich UK

An 18-year-old man presented with a history of fightsided abdominal pain and weight loss. Clinical examination revealed the presence of a right-sided abdominal mass arising from the pelvis. Baseline haematological and biochemical investigations were normal. A computerized tomography scan revealed a 78×56 mm cystic mass indenting the right posterolateral aspect of the bladder. The right kidney was absent with a congenital anomaly and duplication of the inferior vena cava below the left renal vein. A dimercaptosuccinic acid (DmSA) scan revealed

关键词： An unusual mass arising from the vas deferens

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幽暗之地

作者： (南非) j.m.库切

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内心活动

作者： (南非)j.m. 库切

THE mECHANICAL BEHAVIOR OF LABORATORY CROSS-WELD SPECImEN AND ITS RELATION WITH THE PRACTICAL CASES AT ELEVATED TEmPERATURE

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Acta metallurgica Sinica(English Letters) 1999年第1期12卷 85-91页

作者： S.T. TU, j.m. Gong and X. Ling Nanjing University of Chemical Technology, Nanjing 210009, China

In order to interpret the test results of crossweld specimens for application in practical welded components, the present paper studies the high temperature behavior of laboratory cross weld specimens in terms of the uniaxial material tests and numerical simulations. It is found that the crossweld specimen may be used for the high temperature strength assessment, but can hardly be used for life assessment of the practical welded components, which depends on the loading conditions of the components.

关键词： high temperature welding geometrical effect constitutive equation life prediction