简介：Asamemberof1Dnanostructuredmaterials,theferromagneticandnonmagneticmultilayernanowiresexhibittremendouspotentialapplicationsinmanyfieldsduetotheiruniquemagneticandelectricalproperties.Thebasicpropertyofmultilayernanowirearrays,suchascoercivity,iscrucialimportantforthefutureapplication.Inordertoobtainthecoercivityinformation,besidesdirectlymeasuringitthroughexperiment,theoreticalcalculationalsoprovidesausefulandfastwaytoevaluatethemultilayer’scoervicity.Fig.1(a)and(b)demonstrateasinglemultilayernanowireandnanowirearraysembodiedinamatrix,respectively.Inthiswork,byimprovingPant’smodel,wedevelopedthenewmodelandsuccessfullypredictedtherelationshipbetweenthecoercivitychangingofCu/Nimultilayernanowirearraysandstructualparameters.Fig.

简介：Zn2SnO4(ZTO)nanowireswithauniquedendriticnanostructureweresynthesizedviaasimpleone-stepthermalevaporationandcondensationprocess.ThemorphologyandmicrostructureoftheZTOnanodendritehavebeeninvestigatedbymeansoffieldemissionscanningelectronmicroscopy(SEM),x-raydiffraction(XRD)andhigh-resolutiontransmissionelectronmicroscopy(HRTEM).SEMobservationrevealedtheformationofbranchednanostructuresandshowedthateachbranchexhibitedauniqueperiodicstructureformedbyarowofoverlaidrhombohedraofZTOnanocrystalsalongtheaxisofthenanobranch.HRTEMstudiesdisplayedthatthebranchesgrewhomoepitaxiallyassingle-crystallinenanowiresfromtheZTOnanowirebackbone.ApossiblegrowthmodelofthebranchedZTOnanowiresisdiscussed.Tosuccessfullypreparebranchedstructureswouldprovideanopportunityforbothfundamentalresearchandpracticalapplications,suchasthree-dimensionalnanoelectronics,andopto-electronicnanodevices.

简介：LECR4isthefirstECRionsourceusingevaporativecoolingtechnologyintheworld.Itsuniquefeatureisthatthesolenoidsweremadefromsolidsquarecopperwires(3.32mm×5.77mmwithinsulation),andthatallthecoilsareentirelyimmersedintheroomtemperaturecoolant.Thecoilscanproduceamaximumaxialmagneticfieldupto2.5T.LECR4aimstoprovideintensemultiplechargestateionbeamsforSSC-Linacproject-anewLinearinjectorfortheSeparatedSectorCyclotron(SSC).Presently,someionbeamswithdifferentM/QratiohavebeenacceleratedsuccessfullywiththeRFQandDTL,suchas200eμAof16O^5+,200eμAof40Ar^8+,50eμAof209Bi^30+etc.ThemeasuredtransmissionefficiencyofRFQisupto90%.ThelayoutofLECR4ionsourceandtheLEBTisshowninFig.1.

简介：Inthispaper,weintroducethereducedmatrixinkqrepresentationandprovidethereducedmatrixelementsofaprojectionoperatorPontherationalnoncommutativeorbifoldT2/Z4.wegivetheclosedformfortheprojectorbyJacobiellipticalfunctions.Sinceprojectorscorrespondtosolitonsolutionsofthefieldtheoryonthenoncommutativeorbifold,wethuspresentacorrespondingsolitonsolution.

简介：与飘移散开(DD)的联合使用模型，试验性的测量参数和小信号的正弦曲线不变的分析，我们为4H-SiC提取Y参数埋葬隧道的金属氧化物半导体域效果晶体管(BCMOSFET)。输出电线走火水流获得G，梅森的不变的U分别地在普通来源的配置f(T)和摆动f(最大)的最大的频率为外推的统一水流获得频率被计算。这里f(T)=800MHz和f(最大)=5GHz为4H-SiCBCMOSFET被提取，当地效果活动性到达它的山峰时，珍视87cm(2)/Vs什么时候V-GS=4.5V。模拟结果清楚地证明4H-SiCBCMOSFET和地效果活动性的典型频率是优异的，由于新奇结构，与常规MOSFET相比。

简介：磁铁矿(Fe3有不同尺寸和形状的O4)nanoparticles被热分解方法综合。二条途径，非注射一个壶和热注射的方法，被设计详细调查生长机制。nanoparticles的尺寸和形状被调整先锋集中和持续时间时间决定，这被发现，它能好在我们的合成系统基于LaMer模型由机制解释了。monodisperseFe3O4nanoparticles从5nm有一条吝啬的直径到16nm，和形状进化从对球形三角形、立方。磁性是尺寸依赖者，和Fe3在关于在房间温度和最大的浸透磁化的5nm展览superparamagnetic性质的小尺寸的O4nanoparticles来临到78emu/g，而Fe3O4nanoparticles当直径增加到大约16nm时，开发铁磁性的性质。

简介：MoleculardynamicssimulationsareperformedtostudythegrowthmechanismofCH4-CO2mixedhydrateinxCO2=75%,xCO2=50%,andxCO2=25%systemsatT=250K,255Kand260K,respectively.OursimulationresultsshowthatthegrowthrateofCH4-CO2mixedhydrateincreasesastheCO2concentrationintheinitialsolutionphaseincreasesandthetemperaturedecreases.Viahydrateformation,thecompositionofCO2inhydratephaseishigherthanthatininitialsolutionphaseandtheencagingcapacityofCO2inhydratesincreaseswiththedecreaseintemperature.ByanalysisofthecageoccupancyratioofCH4moleculesandCO2moleculesinlargecagestosmallcages,wefindthatCO2moleculesarepreferablyencagedintothelargecagesofthehydratecrystalascomparedwithCH4molecules.Interestingly,CH4moleculesandCO2moleculesfrequentlyreplacewitheachotherinsomeparticularcagesitesadjacenttohydrate/solutioninterfaceduringthecrystalgrowthprocess.Thesetwospeciesofguestmoleculeseventuallyacttostabilizethenewlyformedhydrates,withCO2moleculesoccupyinglargecagesandCH4moleculesoccupyingsmallcagesinhydrate.

简介：氧化物PbMn(SO4)的磁性2由通过SO4tetrahedra与对方一起连接了的MnO6octahedra组成了，很好在实验被学习。在这篇论文，我们探索了它的有趣电子并且有第一原则的计算的磁性。也就是，我们Mn离子高有的所有旋转的结果表演说S=5/2，并且在NN和NNN之间的磁性的couplings是antiferromagnetic，它与试验性的结果同意很好。而且，吃惊在NN和NNN之间的相互作用最优地与扩大H被解释的旋转交换结果

简介：ThefutureGSIOnline-Offline-Object-OrientedanalysisframeworkGo4basedonROOT[CERN,R.Brunetal]providesamechanismtomonitorandcontrolananaluysisatanytime.ThisisachievedbyrunningtheGUIandtheanalysisindifferenttasks.Tocontrolthesetasksbyonenon-lbockingGUI,theGo4TaskHandlerpackagewasdeveloped.Itoffersanasynchronousintertaskcommunicationviaindependentchannelsforcommands,data,andstatusinformation,Eachchannelisprocessedbyadedicatedthreadandhasabufferqueueasinterfacetotheworkingthread.ThethreadsarecontrolledbytheGo4ThreadMAanagerpackage,basedontheROOTTThreadpackage,InparalleltotheGUIactions,theanalysistaskscandisplayobjectslikehistogramsintheGUI.AtestGUIwasimplementedusingtheQtwidgetlibrary(TrolltechInc.).AQttoROOTinterfacehasbeendeveloped.TheGo4packagesmaybeutilizedforanyROOTapplicationthatrequirestocontrolindependentdataprocessingormonitoringtasksfromanon-blockingGUI.

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简介：Highenergyprotonbeamhasthelongpenetrationlengthinsolidmatteranditcouldproducetheradiographsandindicatethetomographyandmaterialpropertiesinsideofthespecimen.Consideringtheexpensivecoststoconstructahighenergyprotonaccelerator,theothercandidateofhighenergyelectronbeambecomesmoreacceptable[1??3].Duetothehighspatialandtemperalresolutionofhighenergyelectronbeam.Itisapowertooltodiagnosetheinnerstructurechangeduringthehighenergydensitymatterproductionandtheinertialconfinementfusionprocess.Inordertostudythedensityresolutionofthehighenergyelectronbeamradiography,astep-targetwasdesignedandproduced.ThestructureandthetargetpicturesareshowninFig.1andtheSitargetswithdifferentslot-widthwereproducedbyusingthemicroetchtechnics.

简介：在这份报纸，为在管的超声的内部流动的调查的马赫4超声的风隧道的轮廓第一被描述。第二，2和马赫4伪吃惊在方形的管挥动的马赫的地点，结构和特征被颜色schlieren相片和管墙压力调查变化大小。最后，墙砍有马赫4伪吃惊的方形的管的墙挥动的方面，顶和底部上的压力分布是由shear的调查品质上压力敏感的液体水晶可视化方法。在第一震动下面的方面墙边界层分离区域在最高的墙附近是狭窄的，当在第一震动下面的方面墙边界层分离区域在底部墙附近是很宽的时。关键词超声的内部流动-伪吃惊波浪-流动可视化-砍压力敏感的液体水晶CLC数字O357.4+2

简介：Wehavedesignedandrealizedanathermal4-channelwavelength（de-）multiplexerinsiliconnitride（SIN）.Minimizedthermalsensitivityisachievedinawidewavelengthrangebyusingwideandnarrowwaveguideswithlowanddifferentthermal-opticcoefficientsinthetwoarmsofMach-Zehnderinterferometers（MZIs）.TheSiNcorelayerandSiO2claddinglayersaredepositedbyalow-temperatureplasma-enhancedchemicalvapordep-ositionprocess.ThefabricatedMZIfilterexhibitsathermalsensitivitywithin4-2.0pm/℃inawavelengthrangeof55nmtonear1300nm.Then,anathermal（de-）multiplexerbasedoncascadedMZIshasbeendemonstratedwithacrosstalk〈-22dBandathermalsensitivity〈4.8pm/℃forallfourchannels,reducedby77%comparedtoaconventionalSiN（de-）multiplexer.OwingtothepassiveoperationandcompatibilitywiththeCMOSback-endprocess,ourdeviceshavepotentialapplicationsin3Dintegrationofphotonicsandelectronics.

简介：TemperatureisoneofthekeythermodynamicparametersofHEDmatter.Asapopulartechnique,thepyrometerofnarrow-bandlterstogetherwithphotodiodes(namelymulti-channelpyrometer)hasbeenapplied.However,thepyrometercanonlymeasureone-positiontemperatureinsingleshot[1;2].Actually,itisveryimportanttoknowtemperatureevolutionofmultiplepositionsinsingleshot,especiallyforthetargetinducedbyheavyionbeam,wherealargevolumeofHEDmattercanbegenerated.Consequently,afastnew-typepyrometerhasbeendesigned.

简介：Biooxidationhasbeensuccessfullyappliedinthefieldofrefractorygoldorepretreatment.Itreferstoaprocessthatusesacidophilicmicroorganismstooxidizeanddeterioratetheminerals,thusmakinggoldavailableforcyanidation.Acidithiobacillusferrooxidans(At.f),achemolithoautotrophic,acidophilic,moderatelythermophilicbacterium,isthemostcrucialmicroorganisminvolvedinbiooxidation.At.fcanobtainenergybyoxidizingferrousironsandreducedsulfurcompoundsintheminerals[1].Asatoxicmetalloidcarcinogen,arsenicisalwaysassociatedwithhydrothermalgolddeposits.Arsenicisfrequentlyfoundasarsenopyrite(FeAsS),realgar(As4S4),orpiment(As2S3)andinrefractorygoldores[2].

简介：Alargeproportionofmutantswithalteredpigmentfeatureshavebeenobtainedviaexposuretoheavy-ionbeams,atechniquethatisefficientfortraitimprovementinthebreedingofplantsandalgae.However,littleisknownaboutthechangesofthephotosyntheticresponseofmicroalgaeafterexposure.Inourgroup,sixprogeniesofScenedesmusquadricaudadeficientinchlorophyllawereisolatedaftercarbon-ionexposurethatwereprovidedbytheheavyionresearchfacilityinLanzhou(HIRFL),China.Twoprogenieswerepickedupbecausetheirphotosyntheticefficiencyandthephotoprotectionabilityweremarkedlydifferentfromthewildtype.

简介：新课改已经十年，中小学教学的新景象不断涌现，同时人们也在不断地对某些新景象提出质疑．比如，追求教学特色，是不是每个学校都要有与众不同的教学模式？学校与学校的模式不同，为什么同一学校中不同学科的教学又强调统一模式？又比如，教学活动，是不是改变学生座位形式、划分学习小组就意味着交流互动、合作探究了？再就是，关于学生要不要课前预习、老师在课堂上讲多讲少的争论，