简介：AFokker-Planckstudyiscarriedoutfortokamaklowerhybridcurrentdrivewithconsideringthewavesentoftrappingabsorptioninthepreeffectsituation.ThisFokker-PlanckcodeisdevelopedbasedonFASTFP,andsuitableforvariousauxiliaryheatingandcurrentdrivesituationsTheenergylossmechanismthroughanomaloustransportismodeledbyusingasuitablelosstenn.Intheheatingphase,theelectrondistributiondeviatesfromtheMaxwellianclearly,

简介：

简介：Thegeometricshapesofspecimensareimportantinimpacttensiletestsbecausegeometricshapesdeterminethestressstatesofthespecimens,andprecisegeometricshapescanobtainpropermaterialpropertieswithoutnon-materialfactors.Theaimofthisstudywastoinvestigatethe1Dformofthestressbychangingthelength-to-diameter(L/D)ratiosofspecimens.TheexperimentswerecarriedoutonasplitHopkinsontensilebar(SHTB)-rotatingdiskindirectbar-bartensileimpactapparatus.TheL/DratiosoftheLY12CZspecimensusedinthetestrangedfrom1to5.ResultsshowthatthespecimenscanbeusedtoobtainexactparametersofmaterialsundertheproposedconditionswhentheL/Dratioisgreaterthan2.Thisisbecausethelongerlengthwillreduceoreliminatetheeffectsoftheinterfaces.

简介：一个计划被开发计算在电子影响刺激以后射出的放射的极化。充分相对论的弄歪波浪的方法是使用的品种内异系交配体节计算。计划被用于象他一样和象Li一样离子。线极化的计算价值与另外的理论结果和试验性的价值相比。象ForHe一样U在更低的事件精力，，现在的极化在更高的精力在1%以内同意另外的理论的，差别增加直到大约10%。为象他一样Fe和Ti，为大多数线的极化度的现在的结果在试验性的错误酒吧以内同意试验性的数据。为象Li一样Ti线q(1s2s2p(2)P(3/2)到1s(2)2s)，极化的现在的值与另一理论一个，和两个最优地同意值与在试验性的错误工具条以内的测量数据一致。

简介：TheSCIimpactfactorofJournalofNaturalGasChemistry(JNGC)is1.788,accordingtothe'2013JournalCitationReports(JCR)ScienceEdition'.ThisisthehighestSCIimpactfactorforJournalofNaturalGasChemistrysincethejournalwasincludedintheScienceCitationIndexExpanded(SCIE)in2007,anditranksfirstamongchemistryjournalsinChina.Overthepastdecade,theJournalofNaturalGasChemistryhasbecomemoreandmoreinternationalandhasreceivedlargenumbersofmanuscriptsconcerningenergychemistry.Indeed,nowadaysenergychemistryisbecomingoneofthehottopics.

简介：Anacousticpressureamplifier(APA)iscapableofimprovingthematchbetweenathermoacousticengineandaloadbyelevatingpressureratioandacousticpoweroutput.Astanding-wavethermoacousticenginedrivingaresistance-and-compliance(RC)loadthroughanAPAwassimulatedwithlinearthermoacousticstostudytheimpactofloadimpedanceontheperformanceofthethermoacousticsystem.Basedonthesimulationresults,analysisfocusesonthedistributionofpressureamplitudeandvelocityamplitudeinAPAwithanRCloadofdiverseacousticresistancesandcomplianceimpedances.Variationofoperatingparameters,includingpressureratio,acousticpower,hotendtemperatureofstack,etc.,versusimpedanceoftheRCloadispresentedandanalyzedaccordingtotheabovementioneddistribution.Averifyingexperimenthasbeenperformed,whichindicatesthatthesimulationcanroughlypredictthesystemoperationinthefundamental-frequencymode.

简介：Ｅｍｉｓｓｉｏｎ　Ｔｅｍｐｅｒａｔｕｒｅｓ　ｆｒｏｍ　Ｐｏｐｕｌａｔｉｏｎｓ　ｏｆ　Ｐａｒｔｉｃｌｅ　Ｕｎｓｔａｂｌｅ　Ｓｔａｔｅｓ　ａｓ　ａ　Ｆｕｎｃｔｉｏｎ　ｏｆ　Ｉｍｐａｃｔ　ＰａｒａｍｅｔｅｒＥｍｉｓｓｉｏｎＴｅｍｐｅｒａｔｕｒｅｓｆｒｏｍＰ...

简介：Thispaperinvestigatestheeffectofupstreamwakeonunsteadyseparatedflowfieldofdownstreamadjacentvanesbysolving2DunsteadyReynolds-averagedNavier-Stokesequationsdiscretizedbyahigh-orderscheme.Theresultsindicatedthatthemaximumrelativereductionoflosscoefficientwas27.2%whentherelativepassingfrequency(theratioofwakepassingfrequencytothecharacteristicfrequencyoftrailing-vortexsheddingofdownstreamadjacentrotor)islessthan2.5.Theamplitudeofwakedefectexistsathresholdvalueandtheaerodynamicperformanceisenhancedmonotonicallywiththeamplitudeofwakedefectbasically.Theeffectiverangeofincidencemustbegreaterthan8°,whichisnearthestallboundary.

简介：

简介：Opticalwhisperinggallerymicrocavitieswithhigh-qualityfactorshaveshowngreatpotentialtowardachieveingultrahigh-sensitivitysensinguptoasinglemoleculeornanoparticle,whichraisesahugedemandonadeeptheoreticalinsightintothecrucialphenomenasuchasthemodeshift,modesplitting,andmodebroadeninginsensingexperiments.Hereweproposeanintuitivemodeltoanalyzethesephenomenafromtheviewpointofthenanoparticle-inducedmultiplescatteringoftheazimuthallypropagatingmode(APM).ThemodelunveilsexplicitrelationsbetweenthesephenomenaandthephasechangeandenergylossoftheAPMwhenscatteredatthenanoparticle;themodelalsoexplainstheobservedpolarization-dependentpreservationofoneresonanceandtheparticle-dependentredshiftorblueshift.Themodelindicatesthattheparticle-inducedcouplingbetweenthepairofunperturbeddegeneratewhisperinggallerymodes(WGMs)andthecouplingbetweentheWGMsandthefree-spaceradiationmodes,whicharewidelyadoptedincurrenttheoreticalformalisms,arerealizedviathereflectionandscattering-inducedfree-spaceradiationoftheAPM,respectively,andadditionallyexhibitsthecontributionofcrosscouplingbetweentheunperturbedWGMsandotherdifferentWGMstoformingthesplittingresonantmodes,especiallyforlargeparticles.

简介：Inthepresentwork,theheattransferstudyfocusesonassessmentoftheimpactofbedtemperatureonthelocalheattransfercharacteristicbetweenafluidizedbedandverticalrifledtubes(38mm-O.D.)inacommercialcirculatingfluidizedbed(CFB)boiler.Heattransferbehaviorina1296t/hsupercriticalCFBfurnacehasbeenanalyzedforGeldartBparticlewithSautermeandiameterof0.219and0.246mm.TheheattransferexperimentswereconductedfortheactiveheattransfersurfaceintheformofmembranetubewithalongitudinalfinatthetubecrestunderthenormaloperatingconditionsofCFBboiler.AheattransferanalysisofCFBboilerwithdetailedconsiderationofthebed-to-wallheattransfercoefficientandthecontributionofheattransfermechanismsinsidefurnacechamberwereinvestigatedusingmechanisticheattransfermodelbasedonclusterrenewalapproach.ThepredictedvaluesofheattransfercoefficientarecomparedwithempiricalcorrelationforCFBunitsinlarge-scale.

简介：Thispaperdiscussesthetime-of-arrival(TOA)basedindoorvisiblelightcommunication(VLC)positioningsysteminanon-line-of-sightenvironment.Thepropagationdelayisassumedtobegammadistributed.ThegeneralizedCramer–Raolowerboundformultipathpropagationisderivedasthetheoreticalaccuracylimitation.Theperformanceofthepositioningsystemisaffectedbytheshapeparameterandthescaleparameterofgammadistribution.Theinfluencesonpositioningaccuracyofmultipatheffectsareanalyzedthroughdiscussingthephysicalmeaningofthegammadistributionparameters.Itisconcludedthatthelowerboundofpositioningaccuracyisattainedwhenvarianceofthenon-line-of-sightpropagation-inducedpathlengthsiszero.Thesimulationresultprovesthatthetheoreticalpositioningaccuracyisintheorderofcentimeterswiththegivenscenario.

简介：

简介：Highlychargedions(HCIs)carryingamountofpotentialenergywillproducesomenewphysicalphenomenabecausethepotentialenergywillbedepositedintoaverysmallvolumewithinaveryshorttime.WewouldapplythecalorimetricmethodtostudytheenergydepositionofHCIs[1;2].Hereinweintroducethenewsetupforcalorimetricmeasurementforthepotentialenergydepositionofhighlychargedionsat320kVHighlyChargedIonsPhysicsExperimentalPlatform.Thesetupwasconstructedby3parts:theDewar,theelectricaltemperaturecontrollerandthemainpart.ThediamondtargetwasconnectedtotheLN2cooledheatsinkby4copperwiresandaPlatinumtemperaturesensorwasgluedtotherearsideofthetarget.AsshowninFig.1.

简介：NativedefectsinHfSiO_4areinvestigatedbyfirstprinciplescalculations.TransitionlevelsofnativedefectscanbeaccuratelydescribedbyemployingthenonlocalHSE06hybridfunctional.Thismethodologyovercomesthebandgapproblemintraditionalfunctionals.BybandalignmentsamongtheSi,GaAsandHfSiO_4,weareabletodeterminethepositionofdefectlevelsinSiandGaAsrelativetotheHfSiOibandgap.Weevaluatethepossibilityofthesedefectsactingasfixedcharge.Nativedefectsleadtothechangeofvalenceandconductionbandoffsets.Gateleakagecurrentisevaluatedbythebandoffset.Inaddition,wealsoinvestigatediffusionsofnativedefects,anddiscusshowtheyaffecttheMOSdeviceperformance.

简介：对待热的激活的碳(TAC)上的元素的水银俘获用实验室规模被学习固定的床反应堆。TAC的能力被学习在N2和基线气体气氛下面执行Hg0俘获，普通的酸气体成分的效果个别地被评估避免源于多重部件的共存的复杂并发症。结果建议激活的碳(交流)上的功能的组(SFG)是的那表面对当酸气体不在时的Hg0俘获重要。同时，酸气体部件的存在在TAC戏上结合了有缺点的graphitic格子在有效Hg0的一个重要角色俘获。HCl的存在，NO2，并且显著地个别地不由于Hg0的异构的氧化在TAC上在基本气体提高Hg0俘获在有缺点的graphitic格子在TAC上在碳表面和催化作用上创造的酸的地点上。同样，SO2的存在在大约20%改进Hg0俘获。这改进多半在碳表面上由于催化作用由SO2在AC表面和元素的水银的氧化上源于硫组的免职。而且，当酸气体在烟道气体是在场的时，O2在Hg0氧化和俘获上展出synergistic效果。

简介：

简介：Temperatureanddensityasymmetrydiagnosisiscriticaltoadvanceinertialconfinementfusion(ICF)science.Amultimonochromaticx-rayimager,MMI,recordsthespectralsignaturefromanICFimplosioncorewithtimeresolution,2Dspatialresolutionandspectralresolution.Whilenarrow-bandimagesand2Dspace-resolvedspectrafromtheMMIdataconstrainthetemperatureandthedensityspatialstructureofthecore,theaccuracyoftheimagesandthespectrahighlydependsonthequalityoftheMMIdataandtheprocessingtools.Here,wesyntheticallyinvestigatethecriterionforreliableMMIdiagnosticsanditseffectsontheaccuracyofthereconstructedimages.Thepinholearraytiltdeterminestheobjectspatialsamplingefficiencyandtheminimumreconstructionwidth,w.Whenthespectralwidthassociatedwithwissignificantlynarrowerthanthespectrallinewidth,thelineimagesreconstructedfromtheMMIdatabecomereliable.TheMMIsetuphastobeoptimizedforeveryapplicationtomeetthiscriterionforreliableICFdiagnostics.

简介：MacroscopicSiO_2sphereswithahomogeneousaminedistributionweresynthesizedbyaone-stepemulsionbasedsynthesisapproachinaflowcolumnreactor.TheCO_2adsorptioncapacityofthenanostructuredamine-functionalizedsilicasphereswasstudiedinabsenceandpresenceofH_2O.Thestructuralpropertieswereadjustedbyvaryingsolventsandsurfactantsduringthesynthesisand,atconstantamineloadings,werefoundtobethemainfactorforinfluencingtheCO_2sorptioncapacities.Underwater-freeconditionsCO_2isboundtotheaminogroupsviatheformationofcarbamates,whichrequiretwoneighboringaminogroupstoadsorboneCO_2molecule.Atconstantamineconcentrationssorbentswithlowersurfaceareaallowtoestablishahigheraminedensityonthesurface,whichenhancestheCO_2uptakecapacitiesunderdryconditions.InpresenceofH_2OtheCO_2adsorptionchangesto1:1stoichiometryduetostabilizationofcarbamatesbyprotonationofH_2Oandformationoffurtherspeciessuchasbicarbonates,whichshouldinprincipledoubletheadsorptioncapacities.LowconcentrationsofphysisorbedH2O(0.3mmol/g)didnotimpairtheadsorptioncapacityoftheadsorbentsforCO_2,whileathigherwateruptakes(0.6and1.1mmol/g)theCO_2uptakeisreduced,whichcouldbeattributedtocapillarycondensationofH_2Oorformationofbulkyreactionproductsblockinginnerporesandaccesstoactivesites.

简介：