简介：用微分法则和矢量代数由Ｅ＝－ｄΦｄｔ在一定条件下直接导出感生电动势和动生电动势表达式，说明其具有等价性

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简介：最小的dilaton模型(MDM)由叫的dilaton和dilaton顶夸克搭挡把t'称为的一汗衫数量扩大标准模型。在这个工作，我们调查t'-induced放射的修正到Higgs-strahlung生产过程e+在未来Higgs的eZh工厂。我们首先详细介绍分析计算并且显示出怎么处理紫外分叉。然后，我们由从精确electroweak数据考虑限制数字地计算修正。我们发现那，为罪恶L=0.2并且mt'=1200GeV，修正是0.26%和2.1%为，1TeV分别地，并且更大的价值能作为罪恶L增加。

简介：Numericalestimatesforelectronsandmesonsparticle–antiparticlecreationfromvacuuminthepresenceofstrongelectromagneticfieldsarederived,usingthecompleteprobabilitydensityrelationofPopov’simaginarytimemethod(Popov,JETPLett.13,185(1971);Sov.Phys.JETP34,709(1972);Sov.Phys.JETP35,659(1972);PopovandMarinov,Sov.J.Nucl.Phys.16,449(1973);JETPLett.18,255(1974);Sov.J.Nucl.Phys.19,584(1974));(Popov,Phys.Let.A298,83(2002)),andwithintheframeworkofanexperimentalsetupliketheE144(Burkeetal.,Phys.Rev.Lett.79,1626(1997)).Theexistenceofcrossingpointamongpaircreationefficiencycurvesofdifferentphotonenergiesandtheroleofodd/evenmultiphotonordersintheproductionratesarediscussed.Finallyakindoftunabilityprocessbetweenthetwocreationprocessesisdiscussed.

简介：Itisidentifiedthatbarelypassingelectronsarethedriveofthee-Gshbones,ratherthanthebarelytrappedelectronsatlowfrequency.Thefrequencyjumpine-Bshboneexperimentsisreproducedandanalyzed.Itisfoundthatthee-Bshbonefrequencyincreaseswiththehotelectronenergy,whichisconsistentwiththeexperiments.Thegrowthrateofthemode(m=2,n=2)isgreaterthanthatofthemode(m=1,n=1).

简介：Afusionbreedermightbeanessentialintermediateapplicationoffusionenergyatearlierterm,sinceithasthepotentialtoprovideplentyofcommercialfissilefuel.Basedonfusionphysicsandtechnologiesavailableatpresentandinthenearfuture,therealisticfusionexperimentalbreeder,FEB-Ewasdesigned.

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简介：Inthecontextofthetop-color-assistedtechnicolor(TC2)model,theflavor-changingneutral-current(FCNC)interactioninducedbythetop-higgs(h_t~0)arepredictedattreelevel.Westudytherelevantprocessesofe~+e~-(γγ)→th_t~0attheInternationalLinearCollider(ILC).ItisfoundthattheserareprocessesproductionratescanbeenhancedsignificantlyintheTC2model.Especiallyfortheprocessγγ→th_t~0,thetotalcrosssectionwillreachafewfbinthereasonableparameterspace.Wealsocalculatethedistributionsoftransversemomenta,pseudo-rapidandinvariantmassofthetop-higgs.Inviewofthemaindecaymodesoftop-higgsform_(h_t~0)<2m_t,weEndthattherewillbeseveralhundredsFCNCeventsproducedattheILCwithannuallyintegralluminosityof500fb~(-1).Duetothecleanbackground,suchFCNCsignalscanpossiblybedetectedattheILC.

简介：本文详细介绍了测量电动势的四种典型电路以及每种电路电动势的测量和计算的具体方法.

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简介：Inthepresentstudy,astatisticalinvestigationiscarriedouttoexplorewhetherthereisarelationshipbetweenthecriticalfrequency(foEs)ofthesporadic-ElayerthatisoccasionallyseenontheEregionoftheionosphereandthequasibiennialoscillation(QBO)thatflowsintheeast–westdirectionintheequatorialstratosphere.Multipleregressionmodelasastatisticaltoolwasusedtodeterminetherelationshipbetweenvariables.Inthismodel,thestationarityofthevariables(foEsandQBO)wasfirstlyanalyzedforeachstation(CocosIsland,Gibilmanna,NiueIsland,andTahiti).Then,acointegrationtestwasmadetodeterminetheexistenceofalong-termrelationshipbetweenQBOandfoEs.Afterverifyingthepresenceofalong-termrelationshipbetweenthevariables,themagnitudeoftherelationshipbetweenvariableswasfurtherdeterminedusingthemultipleregressionmodel.Asaresult,itisconcludedthatthevariationsinfoEswereexplainablewithQBOmeasuredat10hPaaltitudeattherateof69%,94%,79%,and58%forCocosIsland,Gibilmanna,NiueIsland,andTahitistations,respectively.ItisobservedthatthevariationsinfoEswereexplainablewithQBOmeasuredat70hPaaltitudeattherateof66%,69%,53%,and47%forCocosIsland,Gibilmanna,NiueIsland,andTahitistations,respectively.

简介：Inthispaperwepresentanovelnanoantenna(nantenna)designforenergyharvesting.Thenantennahasan'E'shapeandisplacedonaSiO2substrate.ItsoperationisbasedontheexcitationofsurfaceplasmonpolaritonsthroughthegoldarmsoftheEshape.Byvaryingthelengthsandwidthsofthearms,twooverlappingworkingbandwidthscanbeachieved.Thisresultsinawidebandbehaviorcharacterizedbyafullwidthathalf-maximumofabout2.2μmcenteredaround3.6μm.TwoorthogonalEnantennasareplacedperpendiculartoeachothertorealizeadual-polarizednantenna.Thisnantennacanreceivethetwoincidentpolarizationsattwoseparategaplocationswithveryhighisolation.Theproposedstructurecanbeusedinseveralenergyharvestingapplications,suchasscavengingtheinfraredheatfromtheEarthandotherhotobjects,inadditiontoopticalcommunications.

简介：Today,e-mailhasbecomepartofcommunication,andisthecoreofinformationpublicationamongtheenterprises.Soastocanreachtherapid,low-costandreliableemaildemand,manycompaniesandindividualsusetheserviceofferedbyLinuxasthesolutionsatisfyingthedemands.SondmailisafreewarewhichactsasmailserverinLinux.Theage-olddevelopmenthistoryofSendmailensuresitstransplantability,stabilityandthetechniquesupport.

简介：通过两种教学模式对同一高中物理教材内容处理效果的对比,提出在“闭合电路欧姆定律”单元教学中,《电动势》一节是培养和训练学生创新能力的好素材,并介绍其做法。

简介：Ａ　Ｎｅｗ　Ｅ３　Ｔｒａｎｓｉｔｉｏｎ　ｆｒｏｍ　９＋　Ｉｓｏｍｅｒ　ｉｎ　１４４Ｐｍ　ＮｕｃｌｅｕｓＡＮｅｗＥ３Ｔｒａｎｓｉｔｉｏｎｆｒｏｍ９＋Ｉｓｏｍｅｒｉｎ１４４ＰｍＮｕｃｌｅｕｓ￥ＺｈａｎｇＹｕｈｕ；Ｙ．Ｇｏｎｏ；ＺｈａｏＱｉｎｚ...

简介：通过对教学思维的创新处理，结合自制教学器材及多媒体课件，挖掘《电动机为什么会转动》这一节中的课程资源，培养学生的创新意识和严谨求实的科学态度，这样创新处理是符合新课程标准提出的理念和要求的。

简介：针对传统电动力学修复污染土壤技术存在的不足，在介绍电动力学技术修复机理的基础上综述了相关的改进技术。大量研究表明：实验装置添加工作液循环系统、工作电极布置形成非均匀电场、土壤中添加改良剂或表面活性剂、修复过程中调节pH值等技术改进均可提高电动力学修复效率；采用原电池代替电源的方法可达到减少能源消耗的目的；电动力学修复技术与其他修复技术联合可扬长补短。未来研究中应加强不同性质土壤的电动力学修复机理研究，以便较少破坏土壤结构和有机质；加大与其他修复技术联合方式的研究力度。

简介：对向心力公式验证演示仪进行了改进,改进后的演示仪参照教材上验证向心力的实验方法,改用电机驱动使一质量已知的金属小球在细线带动下沿一水平面作匀速圆周运动,实验时通过更换不同材质的小球改变质量,通过调节细绳的长度或电机转速改变小球旋转半径,通过调节电机工作电压改变小球旋转角速度,利用控制变量法测出F与m、ω、R的对应关系,最后通过实验数据分析推导得出向心力公式F=mω2R。改进后的实验装置操作方便,测量精度高,值得推广。

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简介：Wepropose,inthispaper,touseseveralmultivariateanalysismethodeandanewkindofvariablestoseparatebetweenfourclassesofeventsproducedatLEP2:theeventswith2jets,3jets,4jetsandthosehavingamoreabundantjettopology(njets,n>4)Neuralnetworkhaveproventhemselvestobemoreefficientclassifierthantheothertechniques.Theefficienciesandpuritiesachievedwiththeoptimizedneuralnetworkareinaverage1to7%higherthanthoseobtaindwiththeothermethods.