简介:ThesocialistcorevaluesystemisanimportantstrategicsystemofthoughtproposedonthebasisofMarxistprinciplesandsummarizingtheexperienceofconstructingsocialismwithChinesecharacteristics.'Thesocialistcorevaluesystemistheembodimentoftheessenceofsocialistideology.'1ItistheinternalsubstanceandsoulofthesocialistsystemwithChinesecharacteristics,layingdowntherequirementsanddirectionforitsconstruction,andguidinghumanrightsdevelopmentunderit.ThetheorysystemofsocialismwithChinesecharacteristics
简介:Theconceptofcombiningmetallichoneycombwithfoldedthinmetallicsheets(corrugation)toconstructanovelcoretypeforlightweightsandwichstructuresisproposed.Thehoneycomb–corrugationhybridcoreismanufacturedbyfillingtheintersticesofaluminumcorrugationswithprecision-cuttrapezoidalaluminumhoneycombblocks,bondedtogetherusingepoxyglue.Theperformanceofsuchhybrid-coredsandwichpanelssubjectedtoout-of-planecompression,transverseshear,andthree-pointbendingisinvestigated,bothexperimentallyandnumerically.Thestrengthandenergyabsorptionofthesandwicharedramaticallyenhanced,comparedtothoseofasandwichwitheitheremptycorrugationorhoneycombcore.Theenhancementisinducedbythebeneficialinteractioneffectsofhoneycombblocksandfoldedpanelsonimprovedbucklingresistanceaswellasalteredcrushingmodesatlargeplasticdeformation.Thepresentapproachprovidesaneffectivemethodtofurtherimprovethemechanicalpropertiesofconventionalhoneycomb-coredsandwichconstructionswithlowrelativedensities.
简介:现在,内部任务的干扰是在分析multicores的预定行为的主要困难。预定可预言的嵌入的multicore体系结构MERASA,它允许安全最坏的执行时间(WCET)评价,作为一个吸引人的解决方案出现了。在建筑学,WCET能被能被干扰知道的公共汽车仲裁人(IABA)和划分例如columnization或bankization的动态缓存围住的上面的界限延期(UBD)估计。然而,这体系结构面对在减少的UBD和有效分享的缓存利用之间的窘境。获得更紧密的WCET评价,我们建议由优化与IABA和二水平的划分缓存在multicore系统上印射的bank-to-core减少UBD的一条新奇途径。为这,我们首先基于内部任务的干扰延期的分析介绍一个新UBD计算模型,然后提出bank-to-core与最小的UBD印射和优化算法的核心顺序优化方法。试验性的结果证明我们的途径能从4%~37%减少WCET。
简介:Novelcore-shellhydroxyapatite/chitosanbiocompositenanospheresweresynthesizedinamultipleemulsion.Themultipleemulsionwasaw/o/wemulsion,madeofdiammoniumphosphatesolutionasaninneraqueousphase,cyclohexaneasanoilphase,andcalciumnitratesolutionandchitosansolutionasanouteraqueous.Theformingmechanismofcore-shellspheresandtheinfluenceoftemperatureonthemorphologyofthenanosphereswereinvestigated.Thediameteroftheresultingcore-shellnanosphereswas100-200nmandthethicknessofthechitosanshellwasabout10nm.Anditconcludedthatatdifferentreactiontemperaturethemorphologiesoftheproductswouldbechanged.Thecore-shellnanosphereshavepotentialapplicationsforthedevelopmentofnewbiomedicalmaterials.
简介:TiO_2-coatedpolystyrenenanoparticleswerepreparedinasimpleway.First,functionalPSparticlesweresynthesizedbycopolymerizingonekindofpolymerizablesurfactantwithstyrene.Thenthestabledispersionsofpolystyrenenanoparticleswereusedastemplates,andpolystyrenenanoparticleswerecoatedwithtitaniabyinsituhydrolysisoftetra-n-butyltitanate(TBT).Nosurfacetreatmentandcentrifugation/redispersioncycleprocesswereneededduringthewholeexperiment.IsolatedPSsphereswithuni...
简介:Experimentswereconductedtostudythegenerationofaircoreanditseffectontheoutflowshapeanddischargeinacylindricalwatertankwithabottomwell-designedoutlet.Dependingonthestagesoftheaircoreinthetank,theoutflowshapecanvaryfromasmoothwaterjettoasmoothspindleshapewithair-core,andtowatersprays.Thediameterofthenozzlesizealsohasinfluenceontheoutflowpattern.Theexistenceofthepenetratedaircorecandramaticallyreducetheoutflowdischarge,withthedischargecoefficientdecreasingwiththenozzlediameter.
简介:Thispaperconcernswiththecoreofnonatomicgaxaesoffomaf(μ),whereμisanonatomicnonnegativemeasureandfisacontinuousconvexfunctiononthedomalnofμ.Themainresultofthispaperisthatthecoreofthegameisnotcompactunderthenormtopologyunlessthegameitselfisameasure.ThisshowsthelargenessofthecoreinasenseotherthanthatdefinedbySharkyforfinitecases.
简介:SeismicPvelocitystructureisdeterminedfortheupper500kmoftheinnercoreandlowermost200kmoftheoutercorefromdifferentialtraveltimesandamplituderatios.ResultsconfirmtheexistenceofagloballyuniformFregionofreducedPvelocitygradientinthelowermostoutercore,consistentwithironenrichmentneartheboundaryofasolidifyinginnercore.Pvelocityoftheinnercorebetweenthelongitudes45oEand180oE(quasi-EasternHemisphere)isgreaterthanorequaltothatofanAK135-Freferencemodelwhereasthatbetween180oWand45oE(quasi-WesternHemisphere)islessthanthatofthereferencemodel.Observationofthisheterogeneitytoadepthof550kmbelowtheinnercoreandtheexistenceoftransitionsratherthansharpboundariesbetweenquasi-hemispheresfavoreithernoorveryslowinnercoresuperrotationoroscillationswithrespecttothemantle.DegreeoneseismicheterogeneitymaybebestexplainedbyactiveinnercorefreezingbeneaththeequatorialIndianOceandominatingstructureinthequasi-EasternHemisphereandinnercoremeltingbeneathequatorialPacificdominatingstructureinthequasi-WesternHemisphere.Variationsinwaveformsalsosuggesttheexistenceofsmaller-scale(1to100km)heterogeneity.
简介:Tobreakthroughthebottle-neckofquantumyieldinupconversion(UC)core-shellsystem,weelucidatedthattheenergytransferefficiencyincore-shellsystemhadanevidentcontributionfromthechargetransferofinterfacewithrelatedtotwofactors:(1)bandoffsetsand(2)bindingenergyareadensity.Thesetwovariablesweredeterminedbymaterialintrinsicpropertiesandcore-shellthicknessratio.Wefurtherunraveledthemechanismofnon-radiativeenergytransferbychargetransferinduceddipoleattheinterface,basedonaquasi-classicalderivationfromF?rstertyperesonantenergytransfer(FRET)model.Withstablebondingacrosstheinterface,thecontributionsonenergytransferinbothradiativeandnon-radiativeenergytransfershouldalsobeaccountedtogetherinAuzel'senergytransfer(ETU)modelincore-shellsystem.Basedonthediscussionaboutinterfacebonding,bandoffsets,andformationenergies,wefiguredoutthesignificanceofinterfacebondinginducedgapstates(IBIGS)thatplayedasignificantroleforinfluencingthechargetransferandradiativetypeenergytransfer.Theinterfacebandoffsetswereakeyfactorindominatingthenon-radiativeenergytransfer,whichwasalsocorrelatedtocore-shellthicknessratio.Wefoundthattheenergyareadensitywithrelatedtocore/shellthicknessratiofollowedthetrendofBoltzmansigmoidalgrowthfunction.Bythephysicaltrend,thisworkcontributedareferencehowthemulti-layeredcore-shellstructurewasformedstartingfromtheverybeginningwithinminimumsize.Aroutewaspavedtowardsasystematicstudyoftheinterfacetounveiltheenergytransfermechanismincore-shellsystems.
简介:'Giant'CdSe/CdScore/shellnanocrystals(NCs)weresynthesizedwiththickCdSshell(15monolayers),andthex-raydiffraction(XRD)measurementindicatesthereisazincblendephaseinthethickCdSshell,whereasittransformedintowurtzitephaseunder5minradiationwitha400nm,594μJ∕cm2femtosecond(fs)laserbeam.TheevolutionoftheNCs’spontaneousemissionunderthefslaserradiationwasrecordedwithaHamamatsustreakcamera.Theas-synthesizedNCsexhibitanamplifiedspontaneousemission(ASE)at530nm,whichcomesfromabulk-likeCdSshellduetotheinterfacialpotentialbarrier,whichcouldslowdowntherelaxationofholesfromtheshelltothecore.Afterbeingannealedbyanfslaser,theASEoftheg-NCsistransferredfromabulk-likeCdSshelltoaquantum-confinedCdSecorebecausethephasetransformationdeterminedwiththeXRDmeasurementcouldremovetheinterfacialbarrier.BesidestheASEat643nm,twoshorter-wavelengthASEpeaksat589and541nm,correspondingtoopticaltransitionsofthesecond(1P)andthird(1D)electronquantizationshellsoftheCdSecore,alsoappear,thusindicatingthatAugerrecombinationiseffectivelysuppressed.