简介:RelationshipbetweenH2releaseandseis-micityonXiadianFaultQING-WUGAO(高清武),NILI(李霓)InstituteofGeology,ChinaSeismologicalBureau,...
简介:山东省泗水县是花生主产区,在推广花生收获机械示范过程中,认为4H-2型花生收获机是一种较理想的机型。该机由青岛万农达花生机械有限公司和莱阳农学院机电研究所共同研制。该机结构紧凑、性能可靠、生产率高,是一种与花生覆膜施肥播种机相配套的新型机具,配套动力为8.8~13kW小四轮拖拉机,试验生产率为1.5~2.1亩,11(同时收两行花生),实际作业损失率≤1%,荚果破碎率≤1.5%。
简介:ThenewH.264videocodingstandardachievessignificantlyhighercompressionperformancethanMPEG-2.AstheMPEG-2ispopularindigitalTV,DVD,etc.,bandwidthormemoryspacecanbesavedbytranscodingthosestreamsintoH.264intheseapplications.Unfortunately,thehugecomplexitykeepstranscodingfrombeingwidelyusedinpracticalapplications.Thispaperproposesanefficienttranscodingarchitecturewithasmartdownscalingdecoderandafastmodedecisionalgorithm.Usingtheproposedarchitecture,hugebufferingmemoryspaceissavedandthetranscodingcomplexityisreduced.Performanceoftheproposedfastmodedecisionalgorithmisvalidatedbyexperiments.
简介:Thedifferencesofreductionbehaviorsbetweenironorelumpandpelletswerestudiedbyconductinglowtemperaturereductiondegradation,staticloadreductionanddroplettests.Thesetestssimulatedtheconditionsofreductiontemperatureandhydrogen-containinggasinCOREX.Duetoitsdensestructureandlowporositycomparedwithpellets,lumporepossessespoorreductiondegradationindex(RDI)andslowerreductionrateinearlyandmediumreactionstages,showingsignsoflowerstrength,lowersofteningandmeltingtemperatures,aswellasawidermeltingzoneandhigherΔP.Thatprovidessomebasistoexplainthephenomenaofdifferentialpressurerise,metallizationdeclineandmorestickingaftertheusageoflumporeinCOREXplant.
简介:Thecontrollableactivethermo-atmospherecombustor(CATAC)hasbecomeautilizableandeffectivefacilitybecauseitbenefitstheopticaldiagnosticsandmodeling.Thispaperpresentsthemodelingresearchoftheauto-ignitionandflamesoftheH2/N2(H2/CH4/N2,orH2/H2O2/N2)mixtureonaCATAC,andshowscurvesvaryingwithtemperaturesofauto-ignitiondelay,theheightofthesiteofauto-ignitionofliftedflames,andflamelift-offheight.Theresultsofauto-ignitiondelayandthelift-offheightarecomparedtheexperimentalresultstovalidatethemodel.Aturningpointcanbeseenoneachcurve,identifiedwithcriteriontemperature.Itcanbeconcludedthatwhentheco-flowtemperatureishigherthanthecriteriontemperature,theauto-ignitionandliftedflameofthemixturearenotstable.Conversely,belowthecriteriontemperature,themixturewillauto-igniteinastablefashion.Stabilizationmechanismsofauto-ignitionandliftedflamesareanalyzedintermsofthecriteriontemperature.
简介:TheelectrooxidationofBilirubin(BR)inN,N’-dimethylformamide(DMF)andDMF+H2Omixedsolventisinvestigatedbyvoltammetrytechniques,insiturapidscanthinlayerspectroelectrochemistryandinsituESRspectroscopy.ThedatarevealthattheoxidationprocessofBRundergoesmanystages,whichareallspedupbytheintroductionofwater.ThespeciesofbilirubintakingpartinthereactionisfoundtobechangedfromBRinDMFintoBR’inthemixedsolventsandtheanodicpeakpotentialisshiftedcorrespondinglyfrom+0.58Vto+0.026-+0.35V(vs.Ag/AgCl,1.0MKCl).Freeradicalsandthedimerizationofthemareobservedduringtheoxidation.
简介:Theorientationalorderoftwoliquidcrystals,namely,6-[4-(4-nitrophenylazo)phenyloxy]hexyldiethanolamines(C6)and10-1-bromo[4-(nitrophenylazo)phenyloxy]alkane(B10)wasstudiedbymeansof2HNMRspectroscopywithhexamethylbenzene-d18astheprobemolecule.TheresultsshowthatthedirectorsinthesmecticAphaseofC6andthenematicphaseofB10couldbealigned,whichwasparalleltothemagneticfield.TheorientationalorderparameterofthesolutemoleculesinC6wasabout0.2,whileitisonly0.1inB10,whichisexpectedbecausethemoreorderedsmecticphasetendstoalignsolutemoleculestoahighlevel.ComparedtotheorientationalorderparameterofthesoluteintheSmCphaseof4[3,4,5-tris(4-dodecyloxybenzyloxy)-benzoyloxy]-4-(4′-dodecyloxybenzoyloxy)biphenyl(Ⅰ)(P2=0.14),itislargerinSmAphaseofC6.TherelativelyhigherorientationalorderparameterofthesoluteinC6isattributedtotheformationofintermolecularH-bondsintheSmAphaseofC6.
简介:ZrC涂层被低压力在石墨底层上扔有Br的化学蒸汽免职(LPCVD)2-Zr-C3H6-H2-Ar系统。微观结构和ZrC涂层的生长行为上的免职时间的效果被调查。ZrC涂层在一个岛层模式成长了。涂层的形成被ZrC的成核统治在起始20分钟,和快速的成核产生了ZrC的有细密纹理的结构涂层。免职时间什么时候在30min上,涂层的生长被统治由晶体,给安排列的结构。精力散X光检查光谱学证明到锆的碳的臼齿的比率在在ZrC涂层,和X光检查的1:1附近显示出的光电子光谱学ZrC是在涂层的主要阶段,由大约2.5mol%伴随了ZrO2次要的阶段。
简介:ThreeseriesofCeO2/CuOsampleswerepreparedbyimpregnationmethodandcharacterizedbyXRD,N2adsorption-desorption,temperatureprogrammedreduction(TPR),XPSandTEMtechniques.IncomparisonwiththesamplespreparedwithCuOasinitialsupport,thesampleswithCu(OH)2asinitialsupporthavehigherreducibilitiesandsmallerrelativeTPRpeakareas,andalsolargerspecificsurfaceareasatcalcinationtemperaturesof400℃–600℃.Asaresult,Cu(OH)2isbetterthanCuOasinitialsupportforpreferentialoxidationofCOinexcessH2(CO-PROX).Thebestcatalyticperformancewasachievedonthesamplecalcinedat600℃andwithanatomicratioofCe/Cuat40%.XPSanalysesindicatethatmoreinterfacelinkagesCe-O-Cucouldbeformedwhenitwascalcinedat600℃.AndtheatomicratioofCe/Cuat40%ledtoaproperreducibilityforthesampleasillustratedbytheTPRmeasurements.
简介:Gasphasereductionofcarbonmonoxidetoformaldehydeandethylenewasfoundinelectrochemicalcellwithaninorganicionexchangerα-Zr(HPO4)2·H2Ousedassolidproton-conductingelectrolyteatroomtemperatureandatmosphericpressure.ThetypeandamountoftheelectroreductionofCOdependonthedifferentmetalelectrodesandcurrentdensities,whichgivesalankbetweenheterogeneouscatalysisandelectrochemistry.