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简介：Inthispaperwepresentanoverviewoftheongoingstudiestobuildupaframeworkthatsupportstheanalysisafterthereprocessingphase.ThisframeworkaimstodevelopastandarddataquerylanguagefortheHEPcommunity,Therelatedstudieshavebeenconsideringtherelationaldatabasemodelaspossibleapproachopposedtotheobjectmodel.SeveraloptimizingandtunningtechniquesarebeingusedintechnologieslikeDB2[3],Oracle[5]andRoot[2],thataresimultaneouslybeingevaluated.TheexperienceobtainedcanbeseenasavaluabletestbedforthefutureLHCandsimultaneouslyasinterestinginputforthedevelopmentoftheGRID.

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简介：采用燃烧法合成了La1.6（MoO_4）_3：Eu_0.4^3＋纳米晶末，研究了其声子一掺杂-晶格相互作用和发光性质。x射线粉末衍射（XRD）分析表明，在500～900℃退火后，La1.6（MoO_4）_3：Eu_0.4^3＋样品为单一晶相。对样品进行了光致发光（PL）测量，激发Mo^6＋-O^2-电荷迁移带，观察到Eu^3＋的系列发光，表明Mo^6＋-O^2-带和Eu^3＋间存在能量传递，中心波长分别在λ1=469nm和λ2=426nm处的两个one-phonon边带，相应的声子能量分别为767和1202cm^-1，分别对应于Mo=0和Mo-0-Mo伸缩振动。同时，计算了两个局域模电子一声子耦合强度的黄昆因子分别为S1=0．055和S2=0．037，为揭示其三价离子高传导特性及其负热膨胀物理特性提供了实验基础。

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简介：ThecorrelationbetweenphasestructuresandsurfaceacidityofAl2O3supportscalcinedatdifferenttemperaturesandthecatalyticperformanceofNi/Al2O3catalystsintheproductionofsyntheticnaturalgas(SNG)viaCOmethanationwassystematicallyinvestigated.Aseriesof10wt%NiO/Al2O3catalystswerepreparedbytheconventionalimpregnationmethod,andthephasestructuresandsurfaceacidityofAl2O3supportswereadjustedbycalciningthecommercialγ-Al2O3atdifferenttemperatures(600–1200C).COmethanationreactionwascarriedoutinthetemperaturerangeof300–600Catdifferentweighthourlyspacevelocities(WHSV=30000and120000mL·g-1h-1)andpressures(0.1and3.0MPa).ItwasfoundthathighcalcinationtemperaturenotonlyledtothegrowthinNiparticlesize,butalsoweakenedtheinteractionbetweenNinanoparticlesandAl2O3supportsduetotherapiddecreaseofthespecificsurfaceareaandacidityofAl2O3supports.Interestingly,NicatalystssupportedonAl2O3calcinedat1200C(Ni/Al2O3-1200)exhibitedthebestcatalyticactivityforCOmethanationunderdifferentreactionconditions.LifetimereactiontestsalsoindicatedthatNi/Al2O3-1200wasthemostactiveandstablecatalystcomparedwiththeotherthreecatalysts,whosesupportswerecalcinedatlowertemperatures(600,800and1000C).ThesefindingswouldthereforebehelpfultodevelopNi/Al2O3methanationcatalystforSNGproduction.

简介：A60%Fe/Al2O3catalystwaspreparedbytheco-precipitationmethod.ItwasreducedbyH2toproducemetallicFe,whichwasthensulfidedbyCS2toFe0.96SandFe3S4orphosphidedbytriphenylphosphine(PPh3)inliquidphasestoFe2PandFeP.Itwasfoundthattheironsulfides(Fe0.96SandFe3S4)exhibitedthelowactivityforthehydrodesulfurization(HDS)reactions.TheHDSactivitywasalsolowontheFe(metal)/Al2O3andFe2P/Al2O3catalystssincetheywereconvertedintoFe0.96SandFe3S4duringtheHDSreactions.Incontrast,theFeP/Al2O3wasfoundtobestableandactivefortheHDSreactions.Inparticular,FeP/Al2O3possessedsignificantlysmallerFePparticlesthanFeP/C,leadingtothesignificanthigherHDSactivityofFeP/Al2O3thanFeP/C.

简介：用多光子光电效应理论简要分析了多光子光电效应实验,指出多光子光电效应满足nhν=12mv20+φ(hν0)且nν/ν0=4/3。同时用微扰法及单光子光电效应理论分析了H原子电离问题,结果表明也是当ω/ω0=4/3时电离几率最大

简介：Theshapeofnanostructurehasimportanteffectsontheirproperties,thereforeinthisstudy,wehavepreparedandcharacterizedthreedifferentmorphologiesofWO3nanostructuresi.e.nanorod,nanosphereandnanoplateforsurveyingshapeeffectontheirphotocatalyticpropertiestowarddegradationofRhodamineB(RhB)dye.ObtainedresultsshowthatnanoplateWO3incomparisonwithothershasthebestphotocatalyticactivity.AccordingtoSEM,andphotocatalyticdegradationresults,thereasonforthisbehavioristhesharpedgesandcornersofWO3nanoplates.Becauseoftheirlowcoordinationnumber,atomslocatedintheedgesandcornersoftheWO3nanoplateshavemoreactivity,adsorbmoreRhBandthereforegivemorephotocatalyticactivitytotheWO3nanoplates.UsingofdifferentscavengersshowedthathydroxylradicalsaremainlyresponsibleforphotocatalyticactivityofWO3nanoplatesandnanospheresbutforWO3nanorods,superoxideradicalsarethemainphotocatalyticdegradationagents.

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简介：Theeffectofpromotercobaltandthesequencesofaddingcobaltandmolybdenumprecursorsontheperformanceofsulfur-resistantmethanationwereinvestigated.AllthesesampleswerepreparedbyimpregnationmethodandcharacterizedbyN2-adsorption,X-raydiffraction(XRD),temperature-programmedreduction(TPR)andlaserRamanspectroscopy(LRS).TheconversionsofCOforMo-Co/Al,Co-Mo/AlandCoMo/Alcatalystswere59.7%,54.3%and53.9%,respectively.Amongthesecatalysts,theMo-Co/AlcatalystpreparedstepwiselybyimpregnatingMoprecursorfirstlyshowedthebestcatalyticperformance.Meanwhile,theconversionsofCOwere48.9%forMo/Alcatalystand10.5%forCo/Alcatalyst.TheadditionofcobaltspeciescouldimprovethecatalyticactivityofMo/Alcatalyst.TheN2-adsorptionresultsshowedthatCo-Mo/Alcatalysthadthesmallestspecificsurfaceareaamongthesecatalysts.CoMoO4speciesinCoMo/AlcatalystweredetectedwithXRD,TPRandLRS.Moreover,crystalMoS2whichwasreportedtobelessactivethanamorphousMoS2wasfoundinbothCo-Mo/AlandCoMo/Alcatalysts.Mo-Co/Alcatalystshowedthebestcatalyticperformanceasithadanappropriatesurfacestructure,i.e.,nocrystalMoS2andverylittleCoMoO4species.

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简介：水泡的行为上的可视化研究为水池在压力0.1MPa在一个水平透明加热器上沸腾R141b被执行了。水泡的行为被在加热器表面下面放的一个高速度的照相机记录。离开直径，水泡的离开时间和在不同的热流动的成核地点密度被获得。可视化结果证明水泡离开直径和离开时间减少，当当热流动增加，成核地点密度增加时。没有液体，在实验招募进microlayer，这也被观察。基于试验性的结果，煮曲线因为R141b被使用动态microlayer模型预言。作为结果，在基于动态microlayer，为沸腾的模型和实验数据R141b弄弯的预兆的结果之间的协议擅长高热流动。关键词R141b-热转移-水泡动力学-水池沸腾CLC数字TK124

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