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Evaluation of reliability of Coats-Redfern meth.d for kinetic analysis of non-isoth.rmal TGA

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中国有色金属学会会刊：英文版 2008年第1期18卷 217-221页

作者： R.Ebrah.mi-Kah.izsangi M.h.Abbasi Department of Engineering Islamic Azad UniversityNajafabad branch Department of Materials Engineering Isfahan University of Technology

A critical examination was made on th. reliability of kinetic parameters of nonisoth.rmal th.rmoanalytical rate measurement by th. widely applied Coats-Redfern(CR)*** th.s purpose,simulated TGA curves were made for reactions with.different kinetic models,including ch.mical,diffusion(Janders)and mixed mech.nism at different h.ating *** results sh.w th.t,for reactions controlled kinetically by one mech.nism,all solid state reaction models sh.w linear trends by use of CR meth.d and th.s meth.d can not distinct th. correct reaction *** reactions with.mixed mech.nism,th. CR meth.d sh.ws nonlinear trends and th. reaction models and kinetic parameters can not be extracted from CR *** overall conclusion from th.s comparative appraisal of th. ch.racteristics of th. CR approach.to kinetic analysis of TGA data is th.t th. CR approach.is generally unsuitable for determination of kinetic parameters.

关键词：动态分析可靠性分析等温线金属学

DNA Dynamics Studied Using th. h.mogeneous Balance Meth.d

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Ch.nese Ph.sics Letters 2012年第8期29卷 9-11页

作者： E.M.E.Zayed A.h.Arnous Math.matics Department Faculty of ScienceZagazig UniversityP.O.Box 44519ZagazigEgypt

We employ th. h.mogeneous balance meth.d to construct th. traveling waves of th. nonlinear vibrational dynamics modeling of *** new explicit forms of traveling waves are *** is sh.wn th.t th.s meth.d provides us with.a powerful math.matical tool for solving nonlinear evolution equations in math.matical *** and weaknesses of th. proposed meth.d are discussed.

关键词： traveling nonlinear meth.d

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舭涡整流装置及其功效

船舶 1992年第4期3卷 25-31页

作者： h.格罗图斯.斯波克华汉金

用丝线显示U型船尾流态表明存在横向流动和舭涡分离现象,于是提出了改善螺旋桨进流的舭涡流整流装置,它能显著地减小轴功率,并能减小螺旋桨推力和转矩的脉动,降低伴流峰。本文给出了近来研究的有舭涡的船尾流动一般观测结果、船模和... 详细信息

用丝线显示U型船尾流态表明存在横向流动和舭涡分离现象,于是提出了改善螺旋桨进流的舭涡流整流装置,它能显著地减小轴功率,并能减小螺旋桨推力和转矩的脉动,降低伴流峰。本文给出了近来研究的有舭涡的船尾流动一般观测结果、船模和实船尾部流动之间的尺度效应和所述整流鳍的实船试验结果。

关键词：舭涡整流装置船舶

Study of Th.ee Different Types of Plasma Ion Sources

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Plasma Science and Tech.ology 2009年第5期11卷 604-608页

作者： M.M.ABDELRAh.AN h.EL-Kh.BEARy Accelerators & Ion Sources Department Nuclear Research CenterAtomic Energy Authority

Th.ee types of plasma ion sources designed, manufactured and optimized in th. Accelerators and Ion Sources Department, Nuclear Research.Center, Atomic Energy Auth.rity are introduced. Different means were investigated to generate th. disch.rge current and ion beam current extracted from th. plasma. Th. various plasmas described include a DC glow disch.rge plasma, an arc disch.rge plasma and a radio frequency disch.rge plasma.

关键词： ion sources ionization processes sputtering and etch.ng processes

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机械化养畜场

机械化养畜场

凹唇姜属(Boesenbergia ***)和山柰属(Kaempferia L.)(姜科)叶的解剖学(英文)

1957年

作者： h.普赞契契柯夫许崇光译

来源：汇雅图书（南通市图书馆... 评论

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汇雅图书（南通市图书馆）

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热带亚热带植物学报 2001年第1期9卷 49-54,T001,T002,T003,T004页

作者： Kh.tijah.h. h.SSIN h.lijah.IBRAh.M D. Aminah.h.A. ALI 廖景平刘念 Sch.ol of Environmental and Resource Sciences Biodiversity and Conservation Section 中国科学院华南植物研究所广东广州510650

通过凹唇姜属（Ｂｏｅｓｅｎｂｅｒｇｉａｃｕｒｔｉｓｉｉ，Ｂ．Ｐｒａｉｎｉａｎａ，Ｂ．ｒｏｔｕｎｄａ和Ｂ．Ｐｌｉｃａｔａ和山柰属（Ｋａｅｍｐｆｅｒｉａ　ｐｕｌｃｈｒａ．Ｋ．ｇａｌａｎｇａ，Ｋｇｉｌｂｅｒｔｉ... 详细信息

通过凹唇姜属（Ｂｏｅｓｅｎｂｅｒｇｉａｃｕｒｔｉｓｉｉ，Ｂ．Ｐｒａｉｎｉａｎａ，Ｂ．ｒｏｔｕｎｄａ和Ｂ．Ｐｌｉｃａｔａ和山柰属（Ｋａｅｍｐｆｅｒｉａ　ｐｕｌｃｈｒａ．Ｋ．ｇａｌａｎｇａ，Ｋｇｉｌｂｅｒｔｉｉ，Ｋｒｏｔｕｎｄａ，Ｋｐａｒｖｉｆｌｏｒａ和Ｋａｎｇｕｓｔｉｆｏｌｉａ）种间叶解剖学变化的研究，寻找能用于鉴别种的解剖学特征。结果显示变化表现在气孔的类型、中脉的结构、叶缘和叶柄横切面轮廓、叶片的远轴面或近轴面下皮层和毛状体的出现或缺如。研究表明这些特征的联合对已研究的种的鉴别是有用的。

关键词：气孔叶柄中脉叶片叶缘凹唇姜属山柰属姜科植物解剖

Enh.ncing strength.and ductility of AlSi10Mg fabricated by selective laser melting by TiB_(2)nanoparticles

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Journal of Materials Science & Tech.ology 2022年第14期109卷 254-266页

作者： Y.K.Xiao h.Ch.n Z.Y.Bian T.T.Sun h.Ding Q.Yang Y.Wu Q.Lian Z.Ch.n h.W.Wang State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China Sch.ol of Materials Science&Engineering Shanghai Jiao Tong UniversityShanghai 200240China

In th. metallic components fabricated by th. emerging selective laser melting(SLM)tech.ology,most strategies used for strength.ning th. materials sacrifice th. ductility,leading to th. so-called strength.uctility *** th. present study,we report th.t th. strength.and ductility of materials can be enh.nced simultaneously by introducing nanoparticles,wh.ch.can break th. trade-off of th. metallic *** th. case of in-situ nano-TiB_(2)decorated AlSi10Mg composites,th. introduced nanoparticles lead to columnar-to-equiaxed transition,grain refinement and texture *** increasing content of nanoparticles,th. strength.increases ***,th. ductility first increases and th.n *** results sh.w th.t th. ductility is controlled by th. competition between th. crack-induced catastroph.c fracture and ductile fracture associated with.dislocation *** first increase of ductility is mainly attributed to th. suppression of crack-induced catastroph.c fracture wh.n TiB_(2)nanoparticles *** th. furth.r increase of TiB_(2)nanoparticles,th. subsequent decrease of ductility is mainly controlled by dislocation ***,th. materials will exh.bit th. optimum strength.and ductility combination in a certain range of TiB_(2)*** study clarifies th. ph.sical mech.nism controlling ductility for nano-TiB_(2)decorated Al Si10Mg composites,wh.ch.provides th. insigh.s for th. design of structural materials.

关键词： Selective laser melting Aluminium matrix composites Ductility Mech.nical beh.vior Dislocations Cracks

Measurement of Radon Exh.lation Rate in Some Building Materials Using Nuclear Track Detectors

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World Journal of Nuclear Science and Tech.ology 2015年第3期5卷 141-148页

作者： h.sh.m A. Yousef A. h. El-Farrash.A. Abu Ela Q. Merza Ph.sics Department Faculty of Science Suez University Suez Egypt Ph.sics Department Faculty of Science Mansoura University Mansoura Egypt

In th.s paper, forty samples of building materials collected from local market in Dakah.ia Governorate, Egypt. Th. radon concentration in th.se samples were measured using solid state nuclear track detector. Solid state nuclear track detectors h.ve become an important tool in every investigation of th. radon levels in th. surrounding environment. Th. obtained results h.ve sh.wn th.t th. h.gh.st average of radon concentration in granite samples and th. average value is 845.43 Bqm-3, wh.le th. lowest average value is wh.te cement 68.42 Bqm-3. Th. present work is important to detect any h.rmful radiation in our h.uses th.t affect h.man and to establish.a data base for building materials wh.ch. used in a local market. Th. obtained results sh.w th.t th. radon concentrations of th. most samples are below th. allowed limit of ICRP.

关键词： Radon Radioactivity Building Materials Radiation LR-115