简介：做Si的Ge(2)sb(2)Te(5)电影被dc劈啪作响magnetronco与Ge2Sb2Te5和Si目标准备了。在在两结晶化温度和阶段转变温度fromface-centred-cubic(fcc)的增加的Te(5)电影结果分阶段执行到的Ge(2)sb(2)的Si的增加六角形(十六进制)阶段。Ge2Sb2Te5电影的抵抗力显示出重要增加，Si做。当在这部电影做Si的11.8at.%时，在退火的460度C以后的抵抗力与undopedGe2Sb2Te5电影相比从64～99终止从1～11m终止(.)厘米和动态抵抗增加增加。这对写阶段变化随机存取记忆的当前的减小很有用。

简介：Thisworkbrieflysummarizedtherecentresearcheffortsmadeonthephaseheattransferprocessesinvolvingbiologicalaggregates,withparticularattentiononthecorrelationofaggregatestructureandstateofwaterwiththeprocessefficiency.Thephasechangeprocessesincludeboiling,drying,freezing,sintering,pyrolysis,andsupercriticalextraction,whiletheformerthreewerediscussedinsomedetail.

简介：Anewcompositioncontentquaternary-alloy-basedphasechangethinfilm,Sb-richAglnSbTe,hasbeenpreparedbyDC-magnetronsputteringonaK9glasssubstrate.Afterthefilmhasbeensubsequentlyannealedat200℃for30min,itbecomesacrystallinethinfilm.Thediffractionpeakofantimony(Sb)areobservedbyshallow(0.5degree)x-raydiffractioninthequaternaryalloythinfilm.Theanalysesofthemeasurementfromdifferentialscanningcalorimetry(DSC)showthatthecrystallizationtemperatureofthephasechangethinfilmisabout190℃andincreaseswiththeheatingrate.ByKissingerplot,theactivationenergyforcrystallizationisdeterminedtobe3.05eV.Thereflectivity,refractiveindexandextinctioncoefficientofthecrystallineandamorphousphasechangethinfilmsarepresented.Theopticalabsorptioncoefficientofthephasechangethinfilmsasafunctionofphotonenergyisobtainedfromtheextinctioncoefficient.Theopticalbandgapsoftheamorphousandcrystallizationphasechangethinfilmsare0.265eVand1.127eV,respectively.

简介：Ｐｈａｓｅ　Ｔｒａｎｓｉｔｉｏｎｓ　ｉｎ　Ｓｏｄｉｕｍ　ＣｌｕｓｔｅｒｓＰｈａｓｅＴｒａｎｓｉｔｉｏｎｓｉｎＳｏｄｉｕｍＣｌｕｓｔｅｒｓ￥ＺｈａｎｇＦｅｎｇｓｈｏｕ；Ｅ．ＳｕｒａｕｄａｎｄＲ．ＧｌｏｗｉｎｓｋｉＭｏｓｔｏｆｔｈｅｔｈｅｏｒｅｔｉｃａｌ...

简介：Thesolid-phasesynthesisofisoxazolineson2-polystyrylsulfonamidoethanolresinisreported.2-Polystyrylsuifonamidoethanolresin1wasreactedwithacryloylchloridetoafford2-polystyrylsulfonylamidoethylacrylateresin2,whichwasfurtherreactedwithbrominatedaldoximesby[3+2]cycioadditiontogiveisoxazolineresin4.Resin4wastreatedwithaqueous6mol/LHCIsolutiontoobtainisoxazolinesingoodyieldandpurity.

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简介：ＩｍｐｒｏｖｅｍｅｎｔｏｆＰｈａｓｅＭｅａｓｕｒｅｍｅｎｔＳｙｓｔｅｍｆｏｒＨＩＲＦＬ￥ＺｈａｎｇＪｉａｎｈｕａ；ＬｉＪｉａｎｄＨｕａｎｇＺｈｅｎｇｒｏｎｇＰｈａｓｅｍｅａｓｕｒｅｍｅｎｔｉｓｖｅｒｙｉｍｐｏｒｔａｎｔｆｏｒａｃｃｅｌｅｒａｔｏｒｏｐ...

简介：Inthispaper,theso-calledlocallikelihoodmethodissuggestedforsolvingthechangepointproblemswhenthedataaredistributedasmultivariatenormal.Thedetectionproceduresproposednotonlyprovidestronglyeonsistentestimatesforthenumberandlocationsofthechangepoints,butalsosimplifysignificantlythecomputation.

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简介：Thepurposeofthispaperistoprovetheuniformstabilityofmultidimensionalsubsonicphasetransitionssatisfyingtheviscosity-capillaritycriterioninavanderWaalsfluid,andfurthertoestablishthelocalexistenceofphasetransitionsolutions.

简介：PolymerPhysicsLaboratory,InstituteofChemistry,TheChineseAcademyofSciences,Beijing100080,China

简介：Theseparationofenantiomersofaseriesofeighteennovelnitrogenmustardlinkedphosphoryldiamidederivativeswasinvestigatedonthepreparedphenylcarbamatederivativeβ-cy-clodextrinbondedphaseinnormal-phaseHPLC.Someoftheenantiomerscouldbeseparatedinbaseline.Thechiralrecognitionmechanismwasalsosuggestedfortheseparationofchiralphosphorusorganiccompounds.

简介：Abetterunderstandingofarecentlyraisedargumentonwhetherthereoccursastructurechangeduringyieldinghasbeenacquiredbyusingmolecularsimulation.Thatis,whenmonitoringthedisplacementsofallatomsbeforeandaftertheyield,astructuretransitiondoesoccur,whichisthe'atomicjump'thatcoordinatestheamountoftheatomsinthepolymerandmakesalargestepbeyond--0.05nmforallthoseatoms.Resultsindicatethatthecomplexofpolymerchainpackinginducesthemultipleatomicjumpsaroundtheyieldpoint.Thisexplainswhypolymershaveabroaderyieldingpeak.``

简介：TheinteractionbetweenC60’sinsolidC60hasbeencalculatedby(exp-6-1)potential,andthecauseandthecontrolledfactorofthehighrapidrotationsofC60’swerediscussed.InordertodescribethedisordereddegreeofC60rotation,anequivalentMisintroduced.Thephasetransitionsatthe~260Kandatthe~90KarestudiedfromtheviewpointofC60rotation.Thepotentialbarriersoftheorderedrotationbelowthe~260Kandthedisorderedrotationabovethe~260Khavebeengiven,andtheeffectoftheexternalpressureonthetemperatureofphasetransitionhasalsobeengiven.

简介：TheseparationofxyleneisomersusingGCisamuchdifficulttaskforalongtime,ontheotherhandtheyareveryimpoFtantindustrialmaterials,sofindingagoodstationaryphasehasbeenaninterestingwork.Anexcellentseparationofxyleneisomerswasobtainedbyusing2,6-di-O-pentyl-3-O...

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简介：Whenasurfaceisilluminatedbylaser,thefieldofdiffusingreflectivelightcanbedescribedbyFresnel-KirchhoffintegrationintheregionofFresnel.Ifthecorrelation,beforeandafterthechangeofintensityfield,isanalysedbystatisticalmethod,threegoverningequationsforvariationsofintensityfieldandspecklemovementformulascanbeobtained.Intheseequations,thesurfacemotion,deformationandwavelengthchangeareallconsideredtocausethespecklemovement.

简介：以便减少磨擦力量并且在低速度消除一个技工系统的粘住滑倒现象，一个方法基于超声的微开车技术被建议改变摩擦特征。顺时针方向激动并且在超声的致动器的二个纵的夹钳门栓的震荡器上驾驶点的逆时针方向的显微镜的椭圆的运动将产生超声的润滑油行动；而且，磨擦能被调整震荡器的颤动的振幅活跃地控制。为磨擦控制的试验性的安装用航空的指南，力量传感器和一低速度时刻被设计motor.Fuzzy控制理论被使用进这个系统。实验显示磨擦力量大部分被减少了，试验性的系统的运动是稳定的。当超声的致动器和负担is3.8kg和马达的全部的团正在开车时，磨擦系数仅仅是大约0.0053速度是0.5mm/s。

简介：Aromaticaminecompoundsandtheirderivativesareimportantintermediatesoffinechemicalslikedyeandmedicine.Theformerhydrogenationcatalysthasmanyproblems,suchasenvironmentpollutioncausedbyoldtechnology,strictreactioncondition,complicatedequipment,badpropertyofcatalystandsoon.Holy[1]firstlyreportedthehydrogenationofnitrobenzeneonmodifiedpolystyrenePdcatalyst.Buthowtoimprovetheactivity,selectivityandstabilityofthepolymersupportercatalystneedstostudyfurther.Wepreparedaseriesofpolymersupportedcatalystsbythemethodsofadsorptionandmechanicalmixting,selectedahighactivecatalystPd-AH-1byobservingthehydrogenationofnitrobenzene.

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