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简介：Twokindsofgaseswereusedtoinvestigatetheinfluenceofgasdensityonthehydrodynamiccharacteristicsinabubblecolumn.Itcanbefoundoutthathighergasdensityleadstosmallerbubblediameterandtheflowpatternsaredifferentforthebothgases.Energybalancemechanismsareanalyzedbyconsideringthegasdensitydifference.Modelsweredevelopedtopredicttheaveragebubblediameterwithgoodaccuracy.

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简介：Thedynamicsofentanglementbetweentwoqubitsinthelocaldampingtwo-sidedchannelandsinglesidedchannelarecomparedthroughnon-MarkovianprocessandMarkovianprocess.Theentanglementbetweentwoqubitsisfoundtobelongerinthesingle-sidedchannelcaseduetotheweakeningofthedissipativeeffects.Inthetwo-sidedchannel,influencedbytheentanglementbetweenqubits,thepreviousindependentdissipativechannelsinclinetothecompositeeffectoftheMarkovianprocess.Thiscompositeeffectresultsinthedissipativeeffectofonechannelaffectingthequbitsintheotherchannel,especiallyinhibitingthebackfloweffectinthenon-Markovianchannel,whichisdisadvantageoustotheentanglementmaintenancebetweenqubits.IntheMarkovianchannel,thecompositeeffectofthedampingtwo-sidedchannelsismoreobvioussincethereisnobackfloweffect,thusmoredisadvantageoustotheentanglementmaintenance.

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简介：AlthoughChina’scoreinterestsintheMiddleEastareeconomic,theseareinterwovenwithitsotherinterestsincludingthoseintheareasofpolitics,strategy,securityandoverseasinterests.Becauseofthesignificantgapbetweenitsinterestsanditsinfluence,ChinashouldadoptanewstrategyintheMiddleEast,onethatisdifferentfromthosethatotherpowershaveemployedintheregion.

简介：TheuniqueCoandasurfacehasagreatinfluenceontheperformanceofbladelessfan.However,thereisfewstudiestoexplaintherelationshipbetweentheperformanceandCoandasurfacecurvatureatpresent.Inordertogainaqualitativeunderstandingofeffectofthecurvatureontheperformanceofbladelessfan,numericalstudiesareperformedinthispaper.Firstly,three-dimensionalnumericalsimulationisdonebyFluentsoftware.ForthepurposetoobtaindetailedinformationoftheflowfieldaroundtheCoandasurface,two-dimensionalnumericalsimulationisalsoconducted.FivetypesofCoandasurfaceswithdifferentcurvaturearedesigned,andtheflowbehaviourandtheperformanceofthemareanalyzedandcomparedwiththoseoftheprototype.TheanalysisindicatesthatthecurvatureofCoandasurfaceisstronglyrelatedtoblowingperformance,ItisfoundthatthereisanoptimalcurvatureofCoandasurfacesamongthestudiedmodels.Simulationresultshowsthatthereisaspeciallowpressureregion.WithincreasingcurvatureinYdirection,severallowpressureregionsgraduallyenlarged,thenbegintomergeslowly,andfinallyformalargeareaoflowpressure.Fromtheanalysesofstreamlinesandvelocityangle,itisfoundthatthemagnitudeofthecurvatureaffectstheflowdirectionandreasonablecurvaturecaninducefluidflowclosetothewall.Thus,itleadstothatthecurvatureofthestreamlinesisconsistentwiththatofCoandasurface.Meanwhile,italsocausesthefluidmovementtowardsthemostsuitabledirection.Thisstudywillprovideusefulinformationtoperformanceimprovementsofbladelessfans.

简介：Anexperimentalinstallationofcoldmodelsimulationwassetuptostudythebedpressuredropindifferentregionsoffixedfluidizedbedreactorduringtopfeedingandbottomfeeding,respectively,atvariousgasvelocitieswiththefluidizationimageofsolidparticlesmonitoredatthesametime.Bycomparingthechangesinbeddensityandoperatinggasvelocityindifferentregionsoffixedfluidizedbedreactor,theinfluenceoftopfeedingandbottomfeedingpatternsonfluidizationbehaviorcouldbeinvestigated.Theresultsshowedthatthebeddensityintopfeedingreactorrespondedmorestablytothechangeingasvelocityalongwiththeadvantageofworkinginawiderrangeofoperatinggasvelocities.Basedonthisstudy,itisconcludedthatexistingbottomfeedingreactorconfigurationscannotmeetthefluidizationrequirements;andoptimizationofbottomfeedingreactorwillbeneeded.

简介：答案的二种类型(ZnSO<潜水艇class=“a-plus-plus”>4,MgSO<潜水艇class=“a-plus-plus”>4)被选择在愈合的电极淀积上学习矿物质混合的影响具体裂缝的效果。四个参数(ie，重量获得的率，表面涂层，充满深度的裂缝闭合和裂缝)被测量。在裂缝的电沉积的矿物质作文被分析。学习证明有10%苍蝇灰的臼标本的愈合的效果是最糟，当没有苍蝇灰，有20%苍蝇灰的臼标本的愈合的效果比标本的好时。重量获得，表面涂层，充满深度的裂缝闭合和快克的率与增加扎根的成粒的强风炉子炉渣(GGBS)的内容减少。矿物质混合没在沉积物的作文上有影响。

简介：Theartificialecologicalfloatingbediswidelyusedinriversandlakestorepairandpurifypollutedwater.However,thewaterflowpatternandthewaterleveldistributionaresignificantlychangedbythefloatingbeds,andtheinfluenceonthewaterflowisdifferentfromthatofaquaticplants.Inthispaper,basedonthecontinuousporousmediamodel,amoveabletwo-layercombinationmodelisbuilttodescribethefloatingbed.Theinfluencesofthefloatingbedsonthewaterflowcharacteristicsarestudiedbynumericalsimulationsandexperimentsusinganexperimentalwaterchannel.Thevariationsofthewaterleveldistributionarediscussedunderconditionsofdifferentflowvelocities(v=0.1m/s,0.2m/s,0.30m/s,0.4m/s),floatingbedcoveragerates(20%,40%,60%)andarrangementpositionsawayfromthechannelwall(D=0m,0.1m,0.2m).Theresultsindicatethattheflowvelocityincreasesunderthefloatingbeds,andthewaterlevelrisessignificantlyunderhighflowvelocityconditionsintheupstreamregionandthefloatingbedregion.Inaddition,theaveragerisingwaterlevelvalue(ARWLV)increasessignificantlywiththeincreaseofthefloatingbedcoveragerate,andthearrangementpositionoffloatingbedsintherivercanalsogreatlyinfluencethewaterleveldistributionunderahigh-flowvelocitycondition(v?0.2m/s).

简介：Basedonthermalsimulationexperiment,interactionsbetweenvolcanicfluidsandsourcerockswerestudied.Gasgenerationsinthedrysystemandfluidsystemunderdifferenttemperatureswereanalyzed.Theresultsshowedthatthevarioustypesofsourcerocksaresimilarincomposition,containinggaseousC1-C5hydrocarbons,H2andCO2whosegasyieldsincreasewithincreasingtemperature.ThegasyieldofsourcerocksoftypeisⅠthehighest,followedbytypeⅡ,andthatofsourcerocksoftypeisⅢthelowest,indicatingthattheyieldofhydrocarbongasesisrelatedtotheirhydrocarbongeneratingpotential.AlthoughthegeneratingpotentialoftypeisⅢthelowest,itcanstillberegardedasausefulgassourcewhenitisburieddeeplyenough.Thebasicvolcanicfluidrestrainsthegenerationofgaseoushydrocarbonsindifferenttypesofsourcerocks,butpromotesthegenerationofinorganicgases.

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简介：Theeffectsofmoisturecontent(8%,10%and12%),variety(TaromandFajr)andparboilingonmillingqualityofriceasafunctionofmillingrecovery(MR),headriceyield(HRY),degreeofmilling(DOM)andwhitenesswereinvestigated.Theparboiledgrainswaspreparedwiththreesoakingtemperaturesof25oC,50oCand75oCandthreesteamingtimesof10,15and20min.Asaresultofparboiling,theincreasingratesofMRandHRYvalueswere7.8%and14.3%forTaromand9.8%and10.0%forFajr,respectively,andthedecreasingratesforDOMandwhitenesswere6.6%and10.8%forTaromand6.8%and10.5%forFajr,respectively.Moreover,decreasingmoisturecontentto8%maximizedMR(75.8%forTaromand74.3%forFajr)andHRY(65.8%forTaromand57.0%forFajr)whileincreasingthatto12%revealedmaximumvaluesofDOM(6.1%forTaromand6.2%forFajr)andwhiteness(24.8%forTaromand28.2%forFajr).

简介：Thisstudyaimstosystematicallyanalyzethekeyparametersofthereflowprocessthatinfluencetheuniformityofthechromiumpassivationfilmcoatedontinplate.ThedistributioncharacteristicsofthechromiumpassivationfilmcoatedonthetinplatesurfaceunderdifferenttreatmentconditionsweresystematicallycharacterizedusingthescanningKelvinprobetechnique,X-rayphotoelectronspectroscopy,andX-raydiffraction.Resultsindicatethattheuseoffluxreducestheporosityoftincoating,therebyfavoringtheuniformgrowthofthepassivationfilm.Furthermore,anincreaseinthereflowpowerandquenchingtemperaturefacilitatesthehomogeneousdistributionofthepassivationfilmonthetinplatesurface,particularlywhentreatedwithelectrolyticcathodicsodiumdichromate.

简介：全球太阳的放射(GSR)是全球精力的最直接的来源和形式，并且它的数量的计算由于本地地形学和地面的影响是高度复杂的内部防护。数字举起模型(DEM)数据作为复杂地面和复合状况的一个代表生产一系列地志的因素(例如斜坡，方面，等等)。基于1个km决定DEM数据，气象学的观察和NOAA-AVHRR遥感数据，为在在长江盆以内的崎岖地面上的GSR的计算的一个分布式的模型被开发了。贯穿的模型为崎岖地形学允许天体的太阳的放射的计算并且包括一个分布式的直接太阳的放射模型，一个分布式的弥漫的放射模特儿和分布式的地面反射放射当模特儿。用发达模型，GSR空间分发和可视化的量的模拟被承担了，与随后关于地区和地面分析的结果。分析建议那GSR大小季节地被影响，当影响的度被发现与增加高度在同时发生增加时。而且，GSR大小关于主导的本地方面展出了清楚的空间变化；与阳光充足的南部的斜坡联系的GSR价值比与遮的斜坡联系的那些显著地大。错误分析显示12.983MJm的一个吝啬的绝对错误2和3.608%的一个吝啬的相对错误，当结果基于一个地点认证过程显示22.621MJm的一个绝对错误时2和4.626%的一个相对错误。

简介：ThepresentstudyinvestigatedtheinfluenceofhightemperatureoxidationandreductionpretreatmentsontheleachingrateofPanzhihuailmenite.Theas-pretreatedilmenitewasleachedwith20%HClat105℃.Theleachingprocesswascontrolledbythephasesandmicrostructuresthatevolvedduringthepretreatmentprocesses.Theleachingkineticsofpurehematite,ilmeniteandpseudobrookitewerecharacterizedtoclarifythephaseeffectontheiron-leachingrate;therateofironleachingoccursinthefollowingorderintheHClsolution:hematite（ferriciron）>ilmenite（ferrousiron）>>pseudobrookite（ferriciron）.Therefore,theoften-citednotionthatferrousirondissolvesfasterinHClsolutionsthanferricironwhenexplainingthepretreatmenteffectsisinaccurate.Moreover,theoxidationpretreatment（at600-1000℃for4h）cannotdestroythedensestructureofthePanzhihuailmenite.Therefore,theinfluenceexertedbytheoxidationontheleachingprocessisprimarilydeterminedbythephasechange;oxidationat600and700℃slightlyincreasedtherateofironleachingbecausetheilmenitewastransformedintohematite,whiletheoxidationat900-1000℃significantlyreducedtherateofironleachingbecauseapseudobrookitephaseformed.Thereductioneffectwassubsequentlyinvestigated;theas-oxidizedilmenitewasreducedunderH2at750℃for30min.Thereductionsignificantlyacceleratedtherateofsubsequentironleachingsuchthatnearlyalloftheironhaddissolvedafterleachingfor2hin20%HClat105℃.Thisenhancediron-leachingrateismainlyattributedtothecracksandholesthatformedduringthereductionprocess.

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简介：BystatisticalresearchontheoccurrencepatternofsevereconvectiveweatherinJiangsuprovinceundertheinfluenceoftropicalcycloneswithina10-yearperiod(from2001to2010),thispaperdiscoversthatamongdifferentsevereconvectiveweather,theoccurrencefrequencyofshort-rangeheavyprecipitationisthehighest,thunderstormsandgalescomeinsecond,andgeneralthunderstormsrarelyhappen,whilehailstormsandtornadoesneveroccur.Thestatisticalresultsalsoshowedthatwithintheresearchperiodthereare21tropicalcyclones(TCs)affectingtheJiangsuareaandmostofthemareinthestageofweakeningtotropicaldepressions.Moreover,throughstudyingindicesforrelevantcasesofsevereconvection,itisdiscoveredthattheirthresholdsarelowerthanthatofpreviousresearch,whichindicatedthatconvectiveinstabilityandenergyaccumulationcaneasilyleadtosevereconvectiveweathereventuallyduetotheinfluenceofTCs.