简介：Mechanicalpropertiesofepoxyresinwereinvestigatedbyaddingcore-shellelasticparticles(CSEP).Theresultsindicatedthatoptimizedcore-shellratiowas60/40andtheloadingvolumeofCSEPwas10phr(perhundredpartsofepoxyresinbyweight).Theimpactstrengthofmodifiedsystemsincreasedapparentlywiththedecreaseofcoresizes.However,theshearingstrengthchangedgentlywiththeparticlesizes.CSEPwithlightlycrosslinkedrubberycoreshowedmoreeffectivenessontoughnessthanothers.Withsolutionblending,CSEPcouldbedispersedinepoxymatrixwell,andthemorphologiesofdispersedrubberdomainswerecontrolledperfectlybyCSEPwhosestructurewaspredesigned.Acavitation-shearingbandtoughnessmechanismwasobservedfromtheSEMmicrographsoffracturesurface.Italsowasfoundthatthedeformingtemperature(DT)ofmodifiedepoxydidnotdeclineapparently.

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简介：Thenanoscaletitaniacoatedsilicawaspreparedviaatwo-stepprecipitatingapproach,wherethenanoscalesilicanucleiwerefirstpreparedbypassinganaqueoussolutionofsodiumsilicatethroughanion-exchangeresinbed,thencoatedwiththeprecipitationfromhydrolyzedbutyltitanateinanethanol-hexanemixtureatalowpHvalueinthepresenceofpoly(ethyleneoxide)polyaminesalt(PPA)atahightemperatureof90℃.Inthesecond-stepprecipitatingprocess,thespontaneouslyprecipitatedtitaniashellonthesilicanucleiwasstabilizedinthesuspensionsolutionwiththehelpoftheadsorptionofPPAontheparticles.Apossibleprecipitatingmechanismwassuggested.Furthermore,theamorphoustitaniashellcouldundergocrystallizationfromtheamorphoustotheanatasestructureatahightemperatureof650℃,andafurtherphasetransitionfromtheanatasetotherutilestructureinthedifferentsinteringprocessesatarisingtemperatureof750℃.

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简介：对于兼容ANSI的终端，如xterm、rxvt、konsole等，可以彩色显示终端文本中的底色或前景颜色，本文将详细讨论如何实现随意修改和定制这些终端的颜色。

简介：大家都知道，RedHat一般6～8个月就推出一个新版本的Linux发行版，然而RedHat谜们等待了N个月都没有等到期待已久的RedHatLinux10。不过心细的朋友可能会发现，RedHat2003年11月6日就在其网站上提供一个名为Fedora的Linux发行版（代号为Yarrow)的下载(http：／／fedora．redhat．com／download)。那么这个Fedora究竟和

简介：ＳＨＥＬＬＡＤＡＰＴＩＶＥＴＲＩＡＮＧＵＬＡＴＩＯＮＯＦＴＲＩＭＭＥＤＮＵＲＢＳＳＵＲＦＡＣＥＷａｎｇＨｕｉｃｈｅｎｇＺｈａｎｇＸｉｎｆａｎｇＺｈｏｕＪｉＡｂｓｔｒａｃｔＴｈｅｐａｐｅｒｐｒｅｓｅｎｔｓａｎｅｗａｐｐｒｏａｃｈｆｏｒｔｒｉａｎｇｕｌａ...

简介：很多溢出程序和后门工具都使用了远程Shell获取技术、这个技术一般都是通过管道实现的服务端程序运行后开一个端口，将Cmd.exe加载到内存，创建一个管道，把程序在端口上接收的数据通过管道送给Cmd。实现方法就是用CreateProcess来创建Cmd.exe这个进程，然后通过匿名管道(AnonymousPipe)来完成输入输出的重定向。大致方法都非常的普通，所以这里做为一种经典的技术和大家一起讨论。还是那句老话：希望新手朋友们能逐步提高。

简介：Windows提供了许多接口，可以根据这些接口扩展windowsshell的功能。但是，扩展shell对于许多人来说．还是一个比较神秘的内容．因为介绍它的资料太少了。为此，本刊特别组织一个关于怎样扩展shell的专题，相信读完后，有一定基础的读者都能依葫芦画瓢．编写出各种功能的shell扩展程序。

简介：Wesystematicallyanalyzetheexperimentaldataofalphadecayineven-evenheavynucleifarfromstabilityandfindthattheGeiger-Nuttalllawbrea~sforanisotopicchainwhenitsneutronnumberisacrossamarcnumberorthereisadeformedsubshell.Thisbreakcanbeusedtoidentifynewmagicnumbersofsuperheavynuclei.Itisalsodiscoveredthatthereisanewlinearrelationbetweenthelogarithmofhalf-lifeandthereciprocalofthesquarerootofdecayenergyforN=126andN=152isotones.Itcouldbeanewlawofalphadecayfornucleiwithmagicneutronnumbersbutthephysicsbehinditistobeexplored.Thesignificanceoftheseresearchesforthesearchofnewelementsisdiscussed.

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简介：为了与僵硬学习负担转移机制和混合堆积的适用的能力，核心(MPSC)被插入预制增强的具体堆积(PRCP)形成，在原处测试与不同长度，直径，水水泥比率和PRCP包含MPSC，水泥混合了堆积，并且钻洞堆积，被执行。限制适用的能力，负担解决曲线和MPSC的压力分发，混合堆积被获得。在水泥土壤和PRCP之间的负担转移被有限元素方法分析(女性)。测试结果和女性的分析证明MPSC充分从从外部顶装进转移内部水泥的PRCP的混合堆积和高压缩强度玷污的水泥利用了大磨擦，并且那插入进混合堆积的PRCP改变混合堆积的压力分发并且改进在混合堆积和土壤之间的摩擦抵抗。长度和MPSC的节区域onPRCP两个都有最佳价值。采用MPSC在改进软土壤地面的适用的能力是有效的。

简介：记得zwell大侠在《一种新的穿透防火墙的数据传输技术》中提到通过直接控制DNS进程来实现数据穿透防火墙的传输，基本步骤是：

简介：Thispaperaimstoachieveanalysisandexperimentresultsthatrelatetomechanicscapabilityandstructuralparameterofaspecialsaddleshellofrevolution.Theoreticallyspeaking,thesaddleshellofrevolutionconsistsofatoroidalshellandasphericalshell.Theshellssimultaneousequationscanbesolvedwithharmoniousterms.Where,thefundamentalequationscanbesolvedbyasymptoticexponentialperturbationmethod.TheequationsofspecialsolutioncanbesolvedbyHovozhilovsspecialsolution.Thisnewideaisfromastudyofsomeexistingsolutionsofthetoroidalshell.Theresultshavebeenprovedbycomparedwithsomeexperimentalresults.Theexperimentsaimstostudytheeffectcausedbychangeofmaterialparameter,orbychangeofdifferentgeometricdimensionsofthesaddleshell,whichincludethechangeofthickness,thechangeofradiusofshell,andthechangeofribs.Finally,theacceptedproductofthesaddleshellwerereinforcedbyatoroidalribhasbeensubmitted.

简介：Thispapergivesanexactanalysisofarotatingpiezoelectricsphericalshellwitharbitrarythickness.Atfirst,threedisplacementfunctionsareintroducedtosimplifythebasicequationsofasphericallyisotropic,piezoelectricmedium.Byexpandingthedisplacementfunctionsaswellastheelectricpotentialintermsofsphericalharmonics,thebasicequationsofequilibriumareconvertedtoanuncoupledEulertype,secondorderordinarydifferentialequationandacoupledsystemofthreesecondorderordinarydifferentialequations.Ageneralsolutiontothehomogeneousequationsofequilibriumisthenderived.Thestaticanalysisofarotatingsphericalshellisthenperformedandnumericalexampleispresented.

简介：Experimentalstudyoninitiationofbivalveshellmotiononahorizontalsandbed,underaunidirectionalflowofwater,ispresented.Experimentswerecarriedoutinaflumewiththreetypesofbivalveshells,namelyCoquinaClam,Cross-barredChioneandPonderousArk,totesttheconditionforinitiationofmotion.Theshapeparametersofbivalveshellsaredefinedappropriately.Experimentswereconductedinaflumewithahorizontalbed,andthecriticalshearstresseswereestimatedusingVanoni'sside-wallcorrection.Thecharacteristicparametersaffectingtheinitiationofshellmotiononahorizontalbedinrough-turbulentregimeidentifiedbasedonthephysicalreasoninganddimensionalanalysisaretheShieldsparameter(nondimensionalcriticalshearstress),nondimensionalcompetentmeanvelocity,nondimensionalsandroughness,nondimensionalflowdepthandshapeparameter.EquationsofShieldsparameterandnondimensionalcompetentmeanvelocityfortheinitialmovementofshellsonahorizontalsandbedwithconvexupwardanddownwardconditionsareobtainedusingexperimentaldata.

简介：合成氨工业，从开始建立到现在已经历了80余年历史，对于原料的来源和气化加工的方法，一直是研究开发的要对象。现在已经可以使用各种不同的固态、液态及气态可燃物作为制氢原料，以及与之相应的气体净化方法，来制造所氢氮气体供合成使用。在解决了上述这些问题之后，当今世界最关注的能源问题，又摆在合成氨工业的面前。

简介：Sincecannondrumofagileshell-feedingsystemrotatesfrequentlyandintermittently,itsmotionmustbesteady.Outlineofdrivingcamdeterminesthemotionofcannondrum,soitisnecessarytoselecttheproperoutlineofcam.Throughanalysisofparabolicoutlineandcycloidoutlineofthecams,theoutlinethatcombinesthetwocurvesisobtained.Accordingtothedemandofproduction,thevalueoftheoutlineisrevised,andthenthemethodoffittingcurveisusedtogettheexpressionoftheangleofcamandthedisplacementofthedrivenpart.Throughanalyzingthemotionofthecannondrum,itissuggestedthattheangleofthecamisproportiontothedisplacementofthedrivenpart.Thecamwiththespeciallyderivedoutlinecanmovesteadily.

简介：本文介绍了创建shell扩展处理器所必须实现的标准函数和接口IPersistFile、IShellExtlnit，并对COM作了简要说明。

简介：Inthispaper,aboundaryelementschemeforarbitraryelasticthinshellsiselaborated,BasedonBEMof3DlinearelasticityandKirchhoff’shypothesis,boundaryintegralequationsforshellsarededuced.Asaresult,onlyKelvin’ssolutionisused,thedifficulty,infindingafundamentalsolutionofarbitraryshellsissuccessfullyavoided.