简介：thermoelasticity的Green-Naghdi(G-N)理论被采用就对飞机表面起作用的各种各样的来源的影响而言与虚空学习micropolarthermoelastic固体的变丑。正常模式分析被用来获得排水量部件，力量压力，联合压力，卷部分地的变化和温度分发的分析表达式。当体积来源被使用时，计算结果图形地被介绍。有或没有micropolarity效果的类型II和类型III的比较被做，结果在上下文预言了(G-N)理论。

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简介：计算液体动力学(CFD)广泛地被用来学习gassolid使液化的水动力学；然而，它在liquidsolid使液化的应用是相对稀罕的。在这研究，liquidsolid的CFD模拟使流体化床被执行，集中于效果在liquidsolid使液化的水动力学上拖关联和增加的集体力量。拖关联，这被显示出模拟结果和关联上的重要效果由Beetstra等求婚了。(2007)与试验性的数据给最好的协议。我们进一步证明增加的集体力量确实在liquidsolid使液化的CFD模拟起一个重要作用，不应该因此在CFD模拟被忽略。

简介：Becauseoftheexcellentmechanicalpropertiesof34C「NiMo6steel,itiswidelyusedinhigh-valuecomponents.Manyconventionalapproachestostrengthening-steelstypicallyinvolvethelossofusefulductility.Inthisstudy,34CrNiMo6Steelhavinghighstrengthandductilityisproducedbylasersolidforming(LSF)w让haquenching-tempering(QT)treatment.TemperingofbainiteismainlybysolidphasetransformationinthepreviousLSFlayersduringtheLSFprocess.ThestablemicrostructureofLSFconsistsofferriteandfinecarbides.Themicrostructuretransferstotemperedsorbiteafterheat-treatment.ThetensilepropertiesoftheLSFsteelmeetthoseofthewroughtstandard.TheUTSandelongationofLSFsampleat858MPa,19.2%,respectively,aregreaterthanthoseofthewrought.TheQTtreatmentenhancedtheultimatetensilestrengthandyieldstrengthoftheLSFsample.Theultimatetensilestrength,yieldstrength,reductioninarea,andelongationoftheLSF+QTsampleat980MPa,916MPa,58.9%,and13.9%,respectively,aregreaterthanthoseofthewroughtstandard.TheyieldstrengthoftheLSF+QTsampleisapproximately1.27timesthatofthewrought.TheLSFsamplesfailedinaductilefracturemode,whiletheLSF+QTsamplesshowedmixed-modefailure.ThedefectshaveonlyasmalleffectonthetensilepropertiesowingtotheexcellentductilityoftheLSFsample.

简介：Particlebasedmethodscanbeusedforboththesimulationsofsolidandfluidphasesinmultiphasemedium,suchasthediscrete-elementmethodforsolidphaseandthesmoothedparticlehydrodynamicsforfluidphase.Thispaperpresentsacomputationalmethodcombiningthesetwomethodsforsolid-liquidmedium.ThetwophasesarecoupledbyusinganimprovedmodelfromareportedLagrangian-Eulerianmethod.Thetechniqueisverifiedbysimulatingliquid-solidflowsinatwo-dimensionallid-drivencavity.

简介：Numericalsimulationofgas-solidflowinatwo-dimensionalfluidizedbedwithaninclinedjetwasperformed.Thenumericalmodelisbasedonthetwo-fluidmodelofgasandsolidsphaseinwhichthesolidsconstitutiveequationsarebasedonthekinetictheoryofgranularflow.TheimprovedICEalgorithm,whichcanbeusedforbothlowandhigh-velocityfluidflow,wereusedtosolvethemodelequations.Themechanismofjetformationwasanalyzedusingbothnumericalsimulationsandexperiments.Theemergenceandmovementofgasbubbleswerecapturednumericallyandexperimentally.Theinfluencesofjetvelocity,nozzlediameter,nozzleinclinationandjetpositiononjetpenetrationlengthwereobtained.Asemi-empiricalexpressionwasderivedandtheparameterswerecorrelatedfromexperimentaldata.Thecorrelationequation,whichcanbeeasilyusedtoobtaintheinclinedjetpenetrationlength,wascomparedwithourexperimentaldataandpublishedcorrelationequations.

简介：Ameasurementtechniquethatcanmeasuretheconcentrationofthesolidparticlesinliquidflowwasdeveloped.ThemeasurementsystemconsistsofacolorcameraandthreeLCDdisplays.ThesolidparticleswereputatthebottomofacylindricalmixingtankinwhichJetA1oilwasfilled.Transientmixingofthesolidparticleswasperformedbyrotatingapropellertypeagitatorwiththreedifferentrotationspeed(500,600,700r/min).MixingstatewasvisualizedbytheLCDdisplaysandacolorcamcorder.Thecolorintensityoftheglassparticleschangeswiththeirconcentration.ThecolorinformationwasdecodedintothreeprinciplecolorsR,G,andBsothat,thecalibrationcurveofcolor-to-concentrationwasperformedusingtheseinformation.Aneuralnetworkwasusedforthiscalibration.Thetransientconcentrationfieldofthesolidparticleswasquantitativelyvisualized.

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简介：GypsumcrystallizationalongwiththesimultaneousregenerationofKClwasinvestigatedbythereactionofCaCl2solutionwithK2SO4.WelldevelopedsheetstructuregypsumcrystalswereproducedwhenK2SO4solutionwasaddedintotheCaCl2solutionbyslowtitrationorinmultiplestagesover2-8hfollowedby2hequilibration.InordertoregenerateKClsolutionasconcentratedaspossible,K2SO4solidwasaddedintothegivenCaCl2solutioninsteadofK2SO4solution,obtaininggypsumcrystalswithalmostthesamequalitybymultistageadditionwith[SO42-]/[Ca2+]molarrationolargerthan0.8.However,impurityofK2SO4·CaSO4·H2OwasdetectedbyXRDandwasfurtherconfirmedbySEM-EDSintheproducedcrystalswhenthe[SO42-]/[Ca2+]ratioincreasedto1.1.ItisprovedthatappearanceofthedoublesulfateisattributedtotherelativelyhighconcentrationofK2SO4.So,itisessentialtoproperlycontrolthe[SO42-]/[Ca2+]ratioandmakesure[Ca2+]inexcesstosuppressthesolubilityofCaSO4evenattheexpenseoflowcalciumremovalrate.

简介：Asuccessfulbeamcleanupofa5-mJ/200-μspulsedsolid-statelasersystemoperatingat532-nmwavelengthisdemonstrated.Inthisbeamcleanupsystem,awave-frontsensor-lessadaptiveoptics(AO)systemissetupwitha20-elementbimorphmirror(BM),ahigh-voltageamplifier,acharge-coupleddevicecamera,andacontrolsoftwareimplementingthestochasticparallelgradientdescent(SPGD)algorithm.Thebrightnessofthelaserfocalspotisimprovedbecausethewave-frontdistortionshavebeencompensated.Theperformanceofthissystemispresentedandtheexperimentalresultsareanalyzed.

简介：ThevibrationalRamanspectrahavebeenobtainedforpurifiedsolidfilmsC60.Threebandswereobservedoutofthetotalof10thatweretheoreticallypredicted.Somephenomenawhichmaybeduetophoton-inducedoxidationinthevibrationalRamanmeasuringwereobserved.

简介：Developmentofhighenergylasersourceswithnanosecondpulsesatseveralhertzvaluesforrepetitionratehasbeenveryattractiveinrecentyearsduetotheirgreatpotentialforpracticalapplications.Withtherecentadvancementinfabricatinglargesizelaserqualitytransparentceramics,diodepumpedsolid-statelasergeneratingpulseenergyof100Jat10HzhasbeenrecentlyrealizedatHiLASEcenterusingYb:YAGceramicwithCr:YAGcladding.ThisreviewdiscussesYbbasedhighenergylasers,specificlasergeometriesforefficientthermalmanagementandtheroleoftransparentceramicsinsuchdiodepumpedhigh-energy-classsolid-statelasersaroundtheworld.

简介：Polyether-polyurethanezwitterionomersbasedon4,4’-diphenylmethanediisocyanate(MDI),methyldiethanolamine(MDEA),andpolytetramethyleneoxideglycol(PTMO)werestudiedwithvariable-temperaturewide-line~1HNMR.Itisfoundthatuponionization,degreeofphaseseparationinthepolymersystemdecreasedatfirstduetothelossofhardsegmentregularity,whilefurtherionizationincreasedthedegreeofphaseseparationthroughincreasinghardphasecohesionanddifferenceofpolaritybetweenhardandsoftsegments.

简介：Theflowcharacteristicsinaspouted-fluidbeddifferfromthoseinspoutedorfluidizedbedsbecauseoftheinjectionofthespoutinggasandtheintroductionofafluidizinggas.Theflowbehaviorofgas-solidphaseswaspredictedusingtheEulerian-Euleriantwo-fluidmodel(TFM)approachwithkinetictheoryforgranularflowtoobtaintheflowpatternsinspouted-fluidbeds.Thegasfluxandgasincidentanglehaveasignificantinfluenceontheporosityandparticleconcentrationingas-solidspouted-fluidbeds.Thefluidizinggasfluxaffectstheflowbehaviorofparticlesinthefountain.Inthespouted-fluidbed,thesolidsvolumefractionislowinthespoutandhighintheannulus.However,thesolidsvolumefractionisreducednearthewall.

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简介：Muchattentionhasbeenpaidtothedevelopmentofnewpolymerelectrolytewithspecialmorphology,soastoimprovetheirelectrochemicalpropertiestomeettheneedsoflithium(ion)battery.Inthiswork,PEMlatexwassynthesizedbyemulsion-fi-eepolymerization.ThemicrophotoofPEMlate...

简介：Quantumdots(QDs)canachievehighquantumyieldsclosetounityinliquidsolutions,whereastheyexhibitadecreasedconversionefficiencyafterbeingintegratedintosolid-statepolymermatricesforlight-emittingdiode(LED)devices,whichiscalledthehostmatrixeffect.Inthisstudy,weproposeasolid–liquidhybrid-stateQD-LEDtosolvethisissue.Theethylene-terminatedpolydimethylsiloxane(ethylene-PDMS)isusedtoestablishasolid-statecross-linkednetwork,whereasthemethyl-terminatedPDMS(methyl-PDMS)isusedinitsliquidstate.Fromamacroscopiclevel,thecuredsolid–liquidhybrid-statePDMS(SLHP)compositesreachasolidstate,whichisstableandflexibleenoughtobeusedinLEDdevices.ComparedwithLEDsusingconventionalQD/solidPDMScompositesatequalcolorconversionefficiencyrangingfrom40%to60%,theluminousfluxofLEDswithQD/SLHPcompositesisincreasedby13.0%usinganoptimizedmethyl-PDMSconcentrationof85wt.%.Asaresult,highefficiencyQD-LEDsusingQDsastheonlycolorconvertorwithluminousefficacyof89.6lm/W(0.19A)wereachieved,whichshowaworkingstabilitycomparablewiththatusingconventionalsolid-statestructuresataharshcondition.Consequently,thenovelapproachshowsgreatpotentialforachievinghighefficiencyandhighstabilityQD-LEDs,whichisalsocompatiblewithcurrentstructuresusedinilluminationanddisplayapplications.

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简介：Basedonalargeamountofdissectionatweldedinterfaceandquantitativemicroscopicexaminationofweldedrate,thesuitablelimitgreyscalevaluewasdetermined,andtheweldedrateofsuperplasticsolid-stateweldinginterfaceofheterogeneoussteelwassystematicallystudiedbymeansofself-madeultrasonicC-scanningimaginginspectionsystem.Theexperimentalresultsshow:theweldedstateofsuperplasticsolid-stateweldinginterfaceofheterogeneoussteelcanbeconductedtobemoreaccurately,reliablyandquicklyinspectedbymeansofthissystem,andtheultrasonictestingresultsaregoodconsistentwithactualexaminationresultsoftheinterfacedefectivedistribution.Withintheextentofthesuitbleweldedrate,theweldedratein40Cr/T10Asuperplasticweldingprocesstestedbythissystemislinearwithitstensilestrengthofjoint.