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简介：目的：喷雾气液吸收化学反应广泛存在于能源、化学和环境工程中。比如在能源环境领域,湿法烟气脱硫（WFGD）中的碱性喷雾吸收脱除气体污染物,乙醇胺（MEA）吸收脱除CO_2酸性气体。对这类反应的表征,有利于控制和改善污染物脱除效率。本文尝试利用气液吸收沉淀反应过程中液滴折射率的变化来原位表征反应进程。创新点：1.基于彩虹折射法,首次对气液吸收沉淀反应的原位表征进行探究;2.通过若干实验和详细的传热计算分析,成功验证了其可行性和有效性。方法：1.通过与Abbe折射仪对比,确定全场彩虹测量的准确性（图3和公式（5））;2.搭建全局彩虹技术（GRT）测量系统进行喷雾测量实验（图2）,并记录反应过程中的彩虹图像和离线采样液滴用于显微分析（图4和5）;3.对涉及到的气液吸收沉淀反应进行传热计算和分析（公式（7）~（13））。结论：1.初步表明了利用溶液折射率表征Ca（OH）_2质量分数的可行性。2.实验结果表明GRT的测量结果精确;反应后液滴折射率减少并趋向于水,反应进程可体现在彩虹角（即折射率）的变化上。3.不同浓度Ba（OH）_2吸收CO_2的反应进一步证明了该方法原位表征气液吸收沉淀反应的可行性。4.反应的传热计算和分析表明反应热所造成的温度升高可以忽略,验证了该方法的有效性。

简介：分析了过氧化钠与水反应后滴加酚酞试液有关异常现象的反应原理，从定量分析的角度加以探讨，并提出实验改进措施。

简介：介绍了固相反应法制备高温超导材料钇钡铜氧（YBCO）的实验方法,并研究了YBCO样品制备过程中不同烧结时间对样品的超导转变温度Tc及超导转变宽度ΔTc的影响。给出了实验过程中合适的烧结温度和烧结时间的参考值。

简介：脉冲电晕等离子体处理烟道废气（PPCP法）属于干法脱硫；流程简单；能同时脱硫脱硝；产物是肥料，可实现资源的循环利用；无二次污染；工程造价和运行成本低等优点。但由于脉冲电晕等离子体反应器在短脉冲电压的作用下阻抗变化的复杂性，使得脉冲能量难以有效注入反应器，导致能量注入效率低和脉冲电源关键器件的寿命缩短，因此，研究能量注入效率非常重要。

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简介：Basedonloadseparationtheory,theloadseparationparameterSpbmethodisaneffectiveapproachforestimatingtheJ-resistancecurvefromrecordsofloadversusdisplacementdirectly,usingonesharpcrackedspecimenandanadditionalreferencebluntcrackedspecimen.However,theeffectofthereferencebluntcrackedspecimenonJ-resistancedeterminationwasnotexplicitlyconsideredinpastwork.Inthispaper,amodifiedloadseparationparameterSpbmethodwasdevelopedtoeliminatethiseffect,andthenauniqueestimationofinstantaneouscracklengthforonesharpcrackedspecimencouldbeobtained.Furthermore,aforcedbluntingcalibrationmethodwasalsoadoptedtodeterminetheinstantaneouscracklengthintheloadinseparableregion,referringtoanormalizationmethod.ExperimentsonsteamturbinerotatorsteelCr2Ni2MoVwerecarriedouttoestimateJ-resistancecurvesusinganunloadingcompliancemethod.Byremovingunloadandreloaddatafromload-displacementrecords,theJ-resistancecurveforthesamesharpcrackedspecimenwasestimatedusingthemodifiedseparationparameterSpbmethod.TheresultsindicatethatthemodifiedSpbmethodcompletelyeliminatestheeffectofthereferencebluntcrackedspecimenontheinstantaneouscracklengthdeterminationofthesharpcrackedspecimen.However,differentJ-resistancecurvesinasmallrangeofcrackextensionarepresentwhendifferentbluntingcoefficientsareusedinthebluntinglineequation.TheJ-resistancecurveobtainedfromthemodifiedSpbmethodagreeswellwiththatobtainedfromthecompliancemethod.

简介：Inthiswork,syngasmethanationoverNi-W/TiO2-SiO2catalystwasstudiedinafluidized-bedreactor(FBR)anditsperformancewascomparedwithafixed-bedreactor(FIXBR).Theeffectsofmainoperatingvariablesincludingfeedstockgasesspacevelocity,cokecontent,bedtemperatureandsulfur-tolerantstabilityof100hlifewereinvestigated.ThestructureofthecatalystswascharacterizedbyXRD,N2adsorptiondesorptionandTEM.Itisfoundthatundersamespacevelocityfrom5000h1to25000h1FBRgaveahigherCH4yield,lowercokecontent,andlowerbedtemperaturethanthoseobtainedinFIXBR.Ni-W/TiO2-SiO2catalystpossessedexcellentsulfur-tolerantstabilityonthefeedstockgaseslessthan500ppmH2SinFBR.ThecarbondepositsformedonthespentcatalystwereintheformofcarbonfibersinFBR,whileintheformofdenseaccumulationdistributionappearanceinFIXBR.

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简介：JUNA(JinpingUndergroundlaboratoryforNuclearAstrophysics)isplaningtomeasurethe13C(α,n)16OandsomeotherimportantreactionsatorclosetostellarenergiesusingintenseheliumbeamoutofanECRdrivenacceleratorinJinpingUndergroundlaboratory[1].Deuteriumimpurityinionsourcewillproducessignificantamountofneutrons,limitingthebackgroundlevel.Tocontrolthedeteriumimpurity,wehavedevelopedamethodtomeasurethedeuteriumimpuritywithinHeliumbeamusingthed(d,p)treaction.

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简介：Probingtheopticalpropertiesofmolybdenumdisulfide（MoS2）isvitaltoitsapplicationinplasmon-enhancedspectroscopy,catalysts,sensing,andoptoelectronicdevices.Inthispaper,wetheoreticallystudiedtheRamanandfluorescencepropertiesofmonolayerMoS2usingtip-enhancedspectroscopy（TES）.Inthestrong-couplingTESsystem,theRamanandfluorescenceenhancementfactorscanbeturnedtoashighas4.5×108and3.3×103,respectively,byoptimizingthetip–MoS2-filmdistance.OurtheoreticalresultsnotonlyhelptodeeplyunderstandtheTESpropertiesofmonolayerMoS2,butalsoprovidebetterguidanceontheapplicationsofthenoveltwo-dimensionalmaterial.

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简介：Asafundamentalpropertyofnuclei,atomicmassesarewidelyusedinmanydomainsofscienceandengineering.Areliableatomicmasstablederivedfromtheexperimentaldata,wheretheatomicmassesandtherelevantexperi-mentalinformationcanbefoundconveniently,isinhighdemandbytheresearchcommunity.Tomeetthedemands,theAtomicMassEvaluation(AME)wasinitiatedin1950'sandaseriesofAMEmasstableshavebeenpublishedeversince.CurrentlytheAMEservestheresearchcommunitybyprovidingthemostreliableandcomprehensiveinformationrelatedtotheatomicmasses.ThenewatomicmassevaluationAME2016waspublishedintheMarchissueofChinesePhysicsCastwocom-plementarypapers[1;2].

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简介：134Csabranchingpointins-processpathwhichisshowninFig.1.Thebranchingratioisdefinedasfβ=λβ/(λβ+λn).Itcouldbededucedfromtheabundanceof134Baand136Basince136Bagoesthroughbothdecayandneutroncaptureof134Cswhile134Baonlyexperiencesdecaychannel[1].Duetoboth134Baand134Baarepures-processnuclei,thisbranchingpointisagoodapproachtodeterminethes-processparameters.Withtemperaturedependentβ-decayrateof134Cs,thetemperatureofs-processcouldbededuced.

简介：Multimediastreamingservedthroughpeer-to-peer(P2P)networksisboomingnowadays.However,theend-to-endstreamingqualityisgenerallyunstableduetothevariabilityofthestateofserve-peers.Ontheotherhand,proxycachingisabandwidth-efficientschemeforstreamingovertheInternet,whereasitisasubstantiallyexpensivemethodneedingdedicatedpowerfulproxyservers.Inthispaper,wepresentaP2PcooperativestreamingarchitecturecombinedwiththeadvantagesofbothP2Pnetworksandmultimediaproxycachingtechniquestoimprovethestreamingqualityofparticipatingclients.Inthisframe-work,aclientwillsimultaneouslyretrievecontentsfromtheserverandotherpeersthathaveviewedandcachedthesametitlebefore.Inthemeantime,theclientwillalsoselectivelycachetheaggregatedvideocontentsoastoservestillfutureclients.Theassociateprotocoltofacilitatethemulti-pathstreamingandadistributedutility-basedpartialcachingschemearedetailedlydis-cussed.Wedemonstratetheeffectivenessofthisproposedarchitecturethroughextensivesimulationexperimentsonlarge,Inter-net-liketopologies.

简介：HL-2Atokamak(majorradiusR=165cm,minorradiusα=38-45cm)wassuccessfullyachievedsingle-nulldivertordischargewithgoodcontrolloftheplasmacurrentandpositioninexperiment.Parametersachievedinthiscompaignwereasfollows:toroidalmagneticfieldBT=1.4T,plasmacurrentIp=168kA,plasmaelectrondensityne=1.7×10^19/m^3,plasmaexisttimetp=920ms.