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MICROSTRUCTURE EVAlUATION OF SEMI-SOlID STEEl MATERIAlS IN ROllING PROCESS AND THE RESUlTING MECHANICAl PROPERTIES

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Acta Metallurgica Sinica(English letters) 2001年第5期14卷 347-351页

作者： R.B. Song, Y.l. Kang, j.l. Sun, A.M. Zhao and W.M. Mao School of Materials Science & Engineering, University of Science & Technology Beijing, Beijing 100083,China School of Materials Science & Engineering University of Science & Technology Beijing

The experimental study on the familiar 60Si2Mn and 1Cr18Ni9Ti materials rolled in the semi-solid state was carried out. Experimental results show that the segregation of liquid occurs when the semi-solid slurry is rolled, which influences the microstructure and mechanics performance of workpiece under room temperature. The globular solid particles can not present plastic deformation unless high solid fraction. At the same time, the mechanics property of workpiece is pretty good while the semi-solid slurry of 1Cr18Ni9Ti material is rolled by a pass and no other treatment.

关键词： Mechanical properties Microstructure Performance Rolling

原发性卵巢功能不全与卵巢早衰的病因学研究进展

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中华妇产科杂志 2008年第12期43卷 897-899页

作者：陈子江秦莹莹 Simpson j.l. 山东大学附属省立医院生殖医学中心济南250021 College of Medicine Miami Florida International University USA

目前，卵巢早衰（premature ovarian failure，POF）是被广泛接受和应用的专业术语，通常是指女性40岁之前闭经，伴有高卵泡刺激素（FSH）和低雌激素水平。由于临床治疗很棘手，如何预防和预测POF的发生风险，成为临床医生关注的焦点。... 详细信息

目前，卵巢早衰（premature ovarian failure，POF）是被广泛接受和应用的专业术语，通常是指女性40岁之前闭经，伴有高卵泡刺激素（FSH）和低雌激素水平。由于临床治疗很棘手，如何预防和预测POF的发生风险，成为临床医生关注的焦点。尽管在POF发病机制的探讨中，染色体结构或数目异常、自身免疫功能、医源性及环境等相关因素与POF发病的相关性研究已取得很大进展，但仍有部分POF患者的病因不清，称为“特发性POF”。

关键词：原发性卵巢功能不全卵巢早衰病因学低雌激素水平自身免疫功能发病机制卵泡刺激素 POF

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《感觉与可感物》选译

世界哲学 2009年第5期 43-71页

作者： j.l.奥斯汀[英] 陈嘉映(译) 不详首都师范大学哲学系中国现代思想文化研究所

感觉与料理论是个古老的哲学理论,20世纪上半叶更是极为流行,奥斯汀以艾耶尔的《经验知识之基础》为靶子,采用语言分析方法,对这一理论做出多方面的批判。奥斯汀指出,这一理论中包含了过度概括、虚假两分等常见的哲学谬误,以扭曲的方式... 详细信息

感觉与料理论是个古老的哲学理论,20世纪上半叶更是极为流行,奥斯汀以艾耶尔的《经验知识之基础》为靶子,采用语言分析方法,对这一理论做出多方面的批判。奥斯汀指出,这一理论中包含了过度概括、虚假两分等常见的哲学谬误,以扭曲的方式使用直接/间接、实在、真正的、看起来等一系列相关语词。奥斯汀还连带批判了当时甚为流行的"两种语言"理论。最后,奥斯汀指出,艾耶尔并非当真对感知问题感兴趣,他当真关心的是认识论,并且继承了一个重大的传统错误,即妄图确立不可能误错、不可能需要纠正的知识基础。

关键词：感觉与料理论感官感知错觉两种语言不可能误错

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论电视剧的特性

文艺研究 1989年第1期 174-175页

作者： j.l.斯蒂安李醒

对电视剧的评价,必须针对电视媒体的性质、针对它能做什么和不能做什么来进行衡量。电视剧与舞台剧相比,它所缺少的一个根本因素是舞台空间,没有它,戏的完整意义就不存在了。在舞台上,一个演员在环境中处于何种地位,他同其他演员在空间... 详细信息

对电视剧的评价,必须针对电视媒体的性质、针对它能做什么和不能做什么来进行衡量。电视剧与舞台剧相比,它所缺少的一个根本因素是舞台空间,没有它,戏的完整意义就不存在了。在舞台上,一个演员在环境中处于何种地位,他同其他演员在空间上的相互关系,尤其是演员同观众的空间关系,这些都会加深角色和观众之间的同情和理解,反应和共鸣。角色周围的舞台空间赋予了他个性特征,舞台剧平均有三堂景。电视剧的场景比舞台剧多几倍。

关键词：电视剧舞台剧舞台空间演员观众电视媒体个性特征相互关系空间关系根本因素

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移情与道德发展

Aluminum X-ray mass-ablation rate measurements

作者： (美)j.l.霍夫曼

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Matter and Radiation at Extremes 2017年第1期2卷 16-21页

作者： j.l.Kline j.D.Hager los Alamos National laboratory Los AlamosNM 87545USA lockheed-Martin SyracuseNY 13221USA

Measurements of the mass ablation rate of aluminum(Al)have been completed at the Omega laser *** measurements show that the mass-ablation rate of Al is higher than plastic(CH),comparable to high density carbon(HDC),and lower than *** mass-ablation rate is consistent with predictions using a 1D lagrangian code,*** results suggest Al capsules have a reasonable ablation pressure even with a higher albedo than beryllium or carbon ablators and further investigation into the viability of Al capsules for ignition should be pursued.

关键词： Inertial confinement fusion ablator Aluminum ablator Aluminum capsule X-ray mass ablation rate Alternate ablator

ATOMIC SCAlE MECHANISM OF RESTRAINED EMBRITTlEMENT IN AMORPHOUS Fe_(78)B_(13)Si_9 AllOY BY ElECTRIC PUlSE RAPID ANNEAlING

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Acta Metallurgica Sinica(English letters) 1998年第4期11卷 286-290页

作者： j.l. Huang X.G. Cao E. Sukedai S. Yamasaki and H.C.Gu(Department of Materials Engineering, luoyang Institute of Technology, luoyang 471039, China)(Department of Mechanical Engineering, Okayama University of Science, 1-1 Ridai-Cho,Okayama City,Okayma luoyang Inst of Technology Luoyang China

The direct observations of the atomic arrangements in both conventional furnace annealed and electric pulse rapid annealed Fe78B13Si9 amorphous alloy have been conducted by the lattice imaging technique in a higt resolution electron microscope. The results showed that the embrittlement of the alloy was related to the extent of atomic rearrangements during the annealing processes. The embrittlement of the alloy after 1hour conventional furnace annealing at about 270℃ is caused by the sufficient atomic rearrangements which are characterized by the growth of some bct Fe3B-like atomic short range ordering regions already existed in the as-quenched structure. Electric pulse rapid annealing can effectively retard the above-mentioned atomic rearrangements and thus restrain the embrittlement. The embrittlement only occurs when certain amount of bcc α-Fe nanocrystals are precipitated in the amorphous matrix during electric pulse rapid annealing.

关键词： Fe_(78)B_(13)Si_9 amorphous alloy embrittlement electric pulse rapid annealing high resolution electron microscopy

Effect of surface layer softening from previous electrochemical corrosion on electrochemical cold drawing of Q235 steel bar

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journal of Iron and Steel Research International 2022年第5期29卷 819-835页

作者： j.l.Guo T.j.Chen State Key laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of TechnologyLanzhou730050GansuChina

The effects of H_(2)SO_(4)concentration and current in electrochemical corrosion on surface layer softening or plasticizing of Q235 steel bar and their effects on subsequent electrochemical cold drawing(ECD)were *** results indicate that the electrochemical corrosion can soften or plasticize the surface layer of Q235 steel bar and then make the subsequent ECD be conducted more *** softening degree and thickness of the surface layer are continuously enhanced with increasing corrosion rate,i.e.,increasing H_(2)SO_(4)concentration or current,due to the generation of more vacancy clusters in deeper regions of surface *** vacancy clusters then relax dislocations through being absorbed during ECD,and the formation and movement of additional dislocation flux are thereby enhanced,resulting in the further obvious decrease in the drawing *** is also due to the enhanced formation and movement of additional dislocation flux that the dislocation density and thus the hardness of the surface layer are decreased,as well as that the texture structure is *** behaviors are enhanced as the corrosion rate increases.

关键词： Electrochemical corrosion Electrochemical cold drawing Surface layer softening Vacancy Additional dislocation flux

FEM NUMERICAl SIMUlATION OF THE SOFT MEDIUM TUBE EXPANSION PROCESS

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Acta Metallurgica Sinica(English letters) 2000年第2期13卷 697-701页

作者： j.l. Song and W. W. Wang Taiyuan Heavy Machinery Institute, Taiyuan 030024, China

In this paper the soft medium tube expanding process of different loading case and tube sheet structure is simulated with FEM. The expanding patterns under different conditions are obtained. The correction of the Sing... 详细信息

关键词： soft medium tube expansion FEM simulation single-tube model