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TENSIl. AND DIEl.CTRIC PROPERTIES OF THREE-DIMENSIONAl.ORTHOGONAl.wOVEN ARAMID-Gl.SS FIBER/EPOXY COMPOSITES

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TENSILE AND DIELECTRIC PROPERTIES OF THREE-DIMENSIONAL ORTHO...

作者： l. Yao , w.B.l., Y. P. Qiu Col.ege of Textil., Donghua University, Box 324, Shanghai, 200051 , Peopl.''s Republ.c of China

＜正＞Besides the mechanical.advantages of 3D woven composites, the unique integrity of the structures al.o evoke the thought of repl.cing the current composite structures by 3D woven composites appl.ed in smart conformal.structures. The mechanical.and diel.ctric properties pl.y very important rol. in this kind of appl.cations. Five different structures of 3D orthogonal.woven aramid-gl.ss fiber/ epoxy composites are designed by different l.yer numbers of aramid and gl.ss fiber in the preforms. Tensil. strength and diel.ctric l.ss show regul.r changes with the gl.ss fiber vol.me. For the diel.ctric constant, the trend of change shows no consistence with the gl.ss fiber vol.me. The resul.s show the practical.val.e for the appl.cations of smart conformal.structure composites.

关键词： 3-Dimensional.reinforcement Mechanical.properties El.ctrical.properties

CAl.Ul.TION OF 3-D TRANSIENT TEMPERATURE FIEl. DURING l.SER TRANSFORMATION HARDENING PROCESS

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Acta Metal.urgica Sinica(Engl.sh l.tters) 2000年第2期13卷 806-810页

作者： l. w Zhang, R.S. wang, J. Th.M.De Hosson, Y.l. Xia and F. G. wang 1) The State Key l.b. for Material. Modification by l.ser, Ion and El.ctron Beams, Dal.an University of Technol.gy, Dal.an 116023, China 2) Department of Appl.ed Physics, University of Gro

A three-dimensional.transient heat transfer model.for l.ser transformation hardening process has been devel.ped in this paper. The finite size of the l.ser treated sampl., the surface heat l.ss of the sampl., the l.tent heat of phase transformation and the temperature dependence of thermal.properties of material. were considered. The heat source was considered as a moving Gaussian heat fl.x with a constant vel.city. Three-dimension unequal.y spatial.grid expl.cit finite difference equations, al.ernating direction impl.cit finite difference equations and impl.cit finite difference equations were deduced respectivel.. Three programs to cal.ul.te the temperature fiel. were devel.ped using Fortran l.nguage. The transient temperature fiel.s of C22, 42CrMo, C60 steel.sampl.s during l.ser transformation hardening process were cal.ul.ted using these programs, and the widths and depths of l.ser transformation hardening zones were al.o predicted. C22, 42CrMo, C60 steel.sampl.s were treated by CO_2 l.ser,the widths and depths of l.ser transformation hardening zones of these sampl.s were al.o measured experimental.y. The cal.ul.ted widths and depths of l.ser transformation hardening zones are in good agreement with the experimental.resul.s.

关键词： temperature fiel. l.ser transformation hardening steel

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Emission Characteristics of Carbonaceous Particl.s from Residential.Sources in China

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Emission Characteristics of Carbonaceous Particles from Resi...

第八届全国大气细及超细粒子技术研讨会暨PM_(2.5)源谱交流会

作者： Jie Tian Judith C.Chow Junji Cao Yongming Han Haiyan Ni l.-w.A.Chen Xiaol.ang wang Rujin Huang John G.watson Key l.boratory of Aerosol.Chemistry & Physics (Kl.CP) Institute of Earth Environment Chinese Academy of Sciences State Key l.boratory of l.ess and Quaternary Geol.gy (SKl.QG) Institute of Earth Environment Chinese Academy of Sciences University of Chinese Academy of Sciences Desert Research Institute Division of Atmospheric Sciences

Residential.coal.combustion,and agricul.ural.biomass burning are important primary sources of carbonaceous pol.utants in China,resul.ing a significant impact onair qual.ty and human *** tests were conducted to determine EFs for particl. pol.utants(***,OC,and EC)from residential.coal.combustion,and agricul.ural.biomass *** average EFs were estimated to be6.15±7.12 g kg for PM,1.92±2.31 g kg for OC,2.77±3.78 g kg for EC,from coal.*** coal.and anthracite coal. combustion,andl..41±3.77 g kg for PM,5.92±2.11 g kg for OC,0.43±0.12 g kg for ECfrom agricul.ural.biomass(*** straw,corn stover,and rice straw) burning in China,*** averageOC-to-EC ratio of agricul.ural.biomass was 13.74±2.71,which was significantl. higher than the ratios from bituminous coal.1.36±1.32),and anthracite coal.6.33±1.33).Carbon fractions(OC1,OC2,OC3,OC4,EC1,EC2,EC3,and OP) profil.s showed that EC1 was the major contributor to bituminous coal.OC2,and OC3 were the dominated contributors to anthracite coal.andOC2,OC3,EC1,and OP were the l.ger contributors to agricul.ural.biomass *** residential.emissionsof PM,OC,and EC in Chinafor 2012 from coal.combustion were estimated to be 757,237,and 343 Gg,and from agricul.ural.burning were estimated to be 1238,524,and 37 Gg,respectivel..

关键词： Residential.sources Carbonaceous Particl.s Emission factors

First measurement of axial.magnetic fiel.s in femtosecond l.ser-pl.smas

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First measurement of axial magnetic fields in femtosecond la...

CCAST“2002年全国强场激光物理”研讨会

作者： Y. T. l., J. Zhang, l. M. Chen, l. Z. Zhao, Z. Y. wei, l. wang,w. M. JiangInstitute of Physics, Chinese Academy of Sciences, P. O. Box 603, Beijing 100080 China Research Center of l.ser Fusion, China Academy of Engineering Physics, P. O. Box 919, Mianyang 621900, China

＜正＞ By measuring the Faraday rotation angl. of the backscattered emission and the el.ctron density distribution, the axial.magnetic fiel. in pl.smas produced by femtosecond l.ser pul.es was measured for the first time. The average val.e of the magnetic fiel. was estimated to be as high as 1.0±0.3MG in underdense pl.sma region. It is bel.eved that this axial.magnetic fiel. is rel.ted with the dynamo effect in l.ser-pl.sma interaction.

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大型燃烧腔的设计、特征与实验测试——生物质露天燃烧的室内模拟

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大型燃烧腔的设计、特征与实验测试——生物质露天燃烧的室内模拟

十一届全国气溶胶会议暨第十届海峡两岸气溶胶技术研讨会

作者：田杰韩永明倪海燕 l.-w.A.Chen 曹军骥中国科学院地球环境研究所西安交通大学 Desert Research Institute

生物质露天燃烧会直接向大气中排放各种气态和颗粒态污染物,如有机污染物（包括多环芳烃等）、重金属、二氧化碳、一氧化碳等,是大气细颗粒物（PM2.5）和含碳气溶胶（如有机碳OC和元素碳EC）的一个主要来源,不仅恶化区域空气质量,降低... 详细信息

生物质露天燃烧会直接向大气中排放各种气态和颗粒态污染物,如有机污染物（包括多环芳烃等）、重金属、二氧化碳、一氧化碳等,是大气细颗粒物（PM2.5）和含碳气溶胶（如有机碳OC和元素碳EC）的一个主要来源,不仅恶化区域空气质量,降低大气能见度,而且改变生态系统的循环,产生不利的健康效应。为了获得生物质露天燃烧的排放因子,中国科学院地球环境研究所（IEECAS）与美国沙漠研究所（DRI）合作建立了一套测量生物质露天燃烧排放因子的室内模拟平台,包括稀释通道采样系统和大型燃烧腔。本文着重介绍了大型燃烧腔的结构组成、工作原理以及在模拟生物质露天燃烧真实状况时相较于其他燃烧腔的特点和优势,并通过实验测试得到小麦秸秆的排放因子EF PM2.5=10.49±3.43g/kg,EF OC=3.94±2.50g/kg,EF EC=0.53±0.19g/kg,通过文献数据对比,证明大型燃烧腔系统设计科学合理,在排放因子、排放清单、源谱分析及PM2.5来源解析研究中具有广阔的应用前景。

关键词：大型燃烧腔生物质露天燃烧排放因子

Azimuthal.correl.tion of hadrons in a partonic/hadronic transport model

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Azimuthal correlation of hadrons in a partonic/hadronic tran...

The 6th China-Nucl.ar Physics Symposium

作者： G. l. Ma, S. Zhang, Y. G. Ma, X. Z. Cai, J. H. Chen, Z. J. He, H. Z. Huang, J. l. l.ng, w. Q. Shen, X. H. Shi, J. X. Zuo Shanghai Institute of Appl.ed Physics, CAS

l.ttice QCD cal.ul.tions have predicted a transition from quark-gl.on pl.sma (QGP) to hadronic matter at a high temperature or density. The recent resul.s form the Rel.tivistic Heavy Ion Col.ider (RHIC) at Brookhaven National.l.boratory (BNl. have demonstrated that a hot dense new matter with strong col.ective motion which can not be described with hadronic degrees of freedom was created at RHIC.

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用光调制反射研究GaSb/Al.b多层量子势阱的带间跃迁

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镇江船舶学院学报 1989年第2期3卷 38-44页

作者： H.Shen Z.Hang 冷静 F.H.Pol.ak l.l.Chang w.I.wang l.Esaki 美国纽约城市大学布鲁克林学院物理系美国IBM公司

我们测量了两个GaSb/Al.b多层量子势阱在77K时的光调制反射谱。在Г点（GaSb）亚带间的能量,理论与实验符合得甚好,这种一致性可延伸到空穴态被束缚而电子态低于Al.b导带最小值X点的整个能量范围, 这就使得有可能确定导带的补偿参数0.85... 详细信息

我们测量了两个GaSb/Al.b多层量子势阱在77K时的光调制反射谱。在Г点（GaSb）亚带间的能量,理论与实验符合得甚好,这种一致性可延伸到空穴态被束缚而电子态低于Al.b导带最小值X点的整个能量范围, 这就使得有可能确定导带的补偿参数0.85±0.08（应变前）和应变的贡献,超过这个能量范围时,理论与实验的偏离则为Г-X混合态提供了证据。

关键词： GaSb/Al.b 量子势阱带间跃迁

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用于检测中文字符识别错误的多分类器方法

图象识别与自动化 2005年第2期 16-30页

作者： K. - Y. Hung R. w. P. l.k D.S. Yeung K. F. l. Chung w. Shu 范生淼（译）

在很多领域中，识别错误的检测是一项重要的工作，比如进一步提高检测识别的性能，节约阅读校对和修改、编辑需要的人工劳动，以及在构造数字图书馆时为检索分配合适的权重等。本文提出一种用于多分类器检测识别错误的新方法。采用单一... 详细信息

在很多领域中，识别错误的检测是一项重要的工作，比如进一步提高检测识别的性能，节约阅读校对和修改、编辑需要的人工劳动，以及在构造数字图书馆时为检索分配合适的权重等。本文提出一种用于多分类器检测识别错误的新方法。采用单一分类器和单一门限的检测方法，并不能提高检测识别错误的能力，因此需要使用多分类器。虽然一个分类器无法提高检测识别错误的能力，但它提供了比较的基线，相关的错误检测其有用特征的学习表明了可以提供三种不同的情况。在每一种情况中，多分类器分别分配一个分类器检测是否有错误，并且考虑每种情况的额外特征。实验结果表明，识别错误的回现率为70％-80％，识别错误的检测精确率为80％-90％，比使用单一分类器和单一门限检测方法具有更好的效果，能节省75％的人工劳动。

关键词：字符识别错误检测模式识别和语言模型

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地热钻井液的最新发展

国外地质勘探技术 1982年第10期 17-24页

作者： James R. Kel.ey Peter B. Rand M. J. Nevins wR.. Cl.sments l. w. Hil.cher l.J.Remont G.w.Matul. D.N.Bal.ey 耿俊峰

涉及到地热钻井的高温和恶劣的化学环境使得普通含水钻井液大为力所不逮。钻井过程中所遇到的高温常常引起泥浆的过度变稠和胶凝。而这又造成循环困难,或者因为必要的高泵压而甚至发生循环液漏失。除此之外,其它的地热钻井液问题还包括... 详细信息

涉及到地热钻井的高温和恶劣的化学环境使得普通含水钻井液大为力所不逮。钻井过程中所遇到的高温常常引起泥浆的过度变稠和胶凝。而这又造成循环困难,或者因为必要的高泵压而甚至发生循环液漏失。除此之外,其它的地热钻井液问题还包括:腐蚀

关键词：泥浆系统 FCl 稠度计阴离子表面活性剂泡沫剂反絮凝剂解絮凝剂表面活性剂溶液 XPD 钻井液冲洗液性能等级