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简介：Energylevels,radiativerates,oscillatorstrengthsandlinestrengthsarereportedfortransitionsamongthelowest97levelsofthe(1s22s22p6)3s23p2,3s23p3d,3s3p3,3p4,3s3p23d,and3s23d2configurationsofRbXXIV.AmulticonfigurationDirac–Fock(MCDF)methodisadoptedforthecalculations.Radiativerates,oscillatorstrengths,andlinestrengthsareprovidedforallelectricdipole(E1),magneticdipole(M1),electricquadrupole(E2),andmagneticquadrupole(M2)transitionsfromthegroundleveltoall97levels,althoughcalculationsareperformedforamuchlargernumberoflevels.Toachievetheaccuracyofthedata,comparisonsareprovidedwithsimilardataobtainedfromtheFlexibleAtomicCode(FAC)andalsowiththeavailabletheoreticalandexperimentalresults.Ourenergylevelsarefoundtobeaccuratetobetterthan1.2%.WavelengthscalculatedarefoundtolieinEUV(extremeultraviolet)andx-rayregions.Additionally,lifetimesforall97levelsareobtainedforthefirsttime.

简介：TheNCEP/NCARreanalysisdatasetsandClimatePredictionCenter(CPC)MergedAnalysisofPrecipitation(CMAP)raindataareusedtoinvestigatethelargescaleseasonaltransitionofEastAsiansubtropicalmonsoon(EASM)anditspossiblemechanism.ThekeyregionofEASMisdefinedaccordingtotheseasonaltransitionfeatureofmeridionalwind.Bycombiningthe’thermalwind’formulaandthe’thermaladaptation’equation,anew’thermal-wind-precipitation’relationisdeduced.Theareameanwinddirectionsandthermaladvectionsindifferentseasonsareanalyzedanditisshownthatinsummer(winter)monsoonperiod,theaveragedwinddirectionintheEASMregionvariesclockwise(anticlockwise)withaltitude,andtheEASMregionisdominatedbywarm(cold)advection.TheseasonaltransitionofthewinddirectionatdifferentlevelsandthecorrespondingmeridionalcirculationconsistentlyindicatesthatthesubtropicalsummermonsoonisestablishedbetweentheendofMarchandthebeginningofApril.Finally,aconceptualschematicexplanationforthemechanismofseasonaltransitionofEASMisproposed.

简介：Thispaperconcernstheconstructionandregularityofatransition(probability)functionofanon-homogeneouscontinuous-timeMarkovprocesswithgiventransitionratesandageneralstatespace.Motivatingfromalotofrestrictioninapplicationsofatransitionfunctionwithcontinuous(int≥0)andconservativetransitionratesq(t,x,Λ),weconsiderthecasethatq(t,x,Λ)areonlyrequiredtosatisfyamildmeasurability(int≥0)condition,whichisageneralizationofthecontinuitycondition.Underthemeasurabilityconditionweconstructatransitionfunctionwiththegiventransitionrates,provideanecessaryandsufficientconditionforittoberegular,andfurtherobtainsomeinterestingadditionalresults.更多还原

简介：Sr原子的运动过程在He-Sr的亚稳亚稳的转变激光纵的搏动的分泌物被分析，一个简明前後一致的物理模型被开发。分泌物参数，主要粒子密度，电子温度，和放射激光的脉搏的时间的进化是数字地计算的。模型提供的结果同意有实验的井，和每激光脉搏的时间的行为被模拟结果成功地解释。[从作者抽象]

简介：Anewdual-fluidmodelconsideringphasetransitionandvelocityslipwasproposedinthispaperandtheCunninghamcorrectionwasusedinthedropletresistancecalculation.Thisdual-fluidmodelwasappliedtothenumericalsimulationsofwetsteamflowina2DLAVALnozzleandintheWhitecascaderespectively.Theresultsoftwosimulationsdemonstratethatthemodelisreliable.Meanwhile,thespontaneouscondensingflowinWhitecascadewasanalyzedanditinfersthattheirreversiblelosscausedbycondensationaccountsforthelargestshare(about8.78%ofinlettotalpressure)intotalpressurelosswhilethelosscausedbyvelocitysliptakesthesmallestshare(nearly0.42%),andanotherpartoftotalpressurelosscausedbypneumaticfactorscontributesalesssharethancondensation,i.e.almost3.95%ofinlettotalpressure.

简介：ThispapercarriesouttheFirstprinciplescalculationofthecrystalstructures(zincblende(B3)androcksalt(B1))andphasetransitionofboronarsenic(BAs)basedonthedensity-functionaltheory.Usingtherelationbetweenenthalpyandpressure,itfindsthatthetransitionphasefromtheB3structuraltotheB1structuraloccursatthepressureof113.42GPa.ThentheelasticconstantsC11,C12,C44,bulkmodulus,shearmodulus,Youngmodulus,anisotropyfactor,KleinmanparameterandPoissonratioarediscussedindetailfortwopolymorphsofBAs.TheresultsofthestructuralparametersandelasticpropertiesinB3structureareingoodagreementwiththeavailabletheoreticalandexperimentalvalues.

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简介：Thestress-inducedmagneticdomainswitchinginFeGathinfilmsisstudiedusingphase-fieldmethod.Inparticular,themagneticfieldisappliedalongthe[110]directionandbiaxialstressesareappliedalong[100]and[010].Acompressivepre-stresscorrespondstoasmallercoercivemagneticfieldwhileatensilepre-stresscorrespondedtoalargercoercivefield.Atthesametime,itisalsofoundthatthetransitionbetweenbutterflyandsquare-likemagnetostrictionloopsoccursatthecriticaloppositebiaxialstressstate.Thetwodifferentevolutionscorrespondtotwodifferentmechanisms:oneisthatthesingledomainswingsacrossafanareabackandforth;theotheristhatthesingledomainturnsaclockwisecircle.Theresultscanbeexplainedbythestresstunedanisotropyenergywell.

简介：Inordertopredictthemechanicalperformanceofthepolyvinylchloride(PVC)atahighoperatingtemperature,aseriesofshort-termtensilecreeptests(onetenthofthephysicalagingtime)ofthePVCarecarriedoutat63Cwithasmallconstantstressbyadynamicmechanicalanalyzer(DMA).TheStruik-Kohlrausch(SK)formulaandStruikshiftingmethodsareusedtodescribethesecreepdataforvariousphysicalagingtime.AnewphenomenologicalmodelbasedonthemultiplerelaxationmechanismsofanamorphouspolymerisdevelopedtoquantitativelycharacterizetheSKparameters(theinitialcreepcompliance,thecharacteristicretardationtime,andtheshapefactor)determinedbytheagingtime.ItisshownthatthemomentarycreepcompliancecurveofthePVCat63CcanbeverywellfittedbytheSKformulaforeachagingtime.However,theSKparametersforthecreepcurvesarenotconstantduringtheagingprocessattheelevatedtemperatures,andtheevolutionoftheseparametersandthecreeprateversusagingtimecurvesatthedoublelogarithmiccoordinateshaveshownanonlinearphenomenon.Moreover,thecreepmastercurvesobtainedbythesuperpositionwiththeStruikshiftingmethodsareunsatisfactoryinsuchacase.Finally,thepredictedresultscalculatedfromthepresentmodelincorporatingwiththeSKformulaareinexcellentagreementwiththecreepexperimentaldataforthePVCisothermallyagedatthetemperaturerelativelyclosetotheglasstransitiontemperature.

简介：系统的Ce异例为整个岩石从跨越奥陶纪/志留纪(O/S)的页岩主导、连续、远洋的沉积序列被获得了在Tieshui的边界()Xiushan()，重庆()，华南。越过O/S边界的Ce异例在三间隔被认出，Wufeng()，Guanyinqiao()并且Longmaxi()。计算Ce/Ce*Wufeng形成的价值从0.84～0.96(avg。0.90)。在Guanyinqiao形成，计算Ce/Ce的价值*从0.73～0.85(avg。0.79)。Ce/Ce*价值最高从0.87～0.96的Longmaxi形成范围(avg。0.91)。沿着节，Ce异例的大小总是是否定的，但是在Guanyinqiao形成是更重要的。相对更高的Ce/Ce*在Wufeng和Longmaxi页岩的价值是可能的由于在减少的条件下面扔的沉积。Ce异例显然确实在伴随突出的集体扑灭的缺氧的事件起一些常规作用，并且这个工作为在结束抑制模型提供批评重要性的新数据--奥陶纪缺氧的事件和集体扑灭。

简介：Toinvestigatetheenthalpyrelaxationbehaviorofmaltitolglasssystem,differentialscanningcalorimetry(DSC)wasusedtoobtainthespecificheatcapacity[Cp(T)]neartheglasstransitiontemperature(Tg)atdifferentcoolingratesrangedbetween1and20K/min.Threephenomenologicalmodelsofenthalpyrelaxation,ToolNarayanaswamy-Moynihan(TNM)model,Adam-Gibbs-Vogel(AGV)modelandGómezRibelles(GR)model,wereusedtosimulatetheexperimentaldata.Themodels'parameterswereobtainedviaacurve-fittingmethod.TheresultsindicatethatTNMandAGVmodelsgavethealmostidenticalpredictionpowersandcanreproducethecurvesofexperimentalCp(T)verywell.However,thepredictionpowerofGRmodelevolvedfromconfigurationalentropyapproachisnotsogoodasthoseofTNMandAGVmodels.Inparticular,themetastablelimitstateparameter(δ)introducedbyGómezRibelleshasinsignificanteffectontheenthalpyrelaxationofthesmallmolecularhydrogen-bondingglasssystem.

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简介：转变金属di-chalcogenidesMX2(X=S，Se，Te；并且M=W，瞬间，Nb，Ta)有的一个种稳固的润滑剂材料广泛地在工业被使用。如此的润滑剂涂层的润滑剂性质涂层的微观结构，取向，形态学，和作文依赖于不仅，而且在底层，在底层之间的接口和润滑剂涂层上，并且特定的申请环境。在这评论，这种润滑剂涂层的tribological性质上的参数的效果被总结。由比较那些涂层的优点和劣势，特殊处理象做那样，结构的调整并且处理以后被建议，试图在严重测试下面改进tribological表演调节(例如高温度，氧化空气或潮湿的状况)。

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