简介：PVC(聚乙烯化合物的氯化物)在生产RPF前从浪费塑料被孤立(拒绝纸与塑料燃料)，并且包括性质，生热的价值，热分解，氯内容和动力学分析的生产RPF的特征被分析。基于TGA(Thermogravimetric分析)的结果，动力学特征被使用是为获得激活的最普通的方法的基辛格方法和Ozawa方法分析精力，和TGA的试验性的条件如下被设置：在氮气氛，与20mL/min的煤气的流动率，加热5-50的率??????????????????六吗？？

简介：吸附是为环境补习的最广泛地应用的技术之一。它的动力学意义大评估给定的吸附物和获得卓见的表演进内在的机制。有有关吸附动力学可得到的大量参考书，并且几个数学模型被开发了描述吸附反应和散开过程。然而，这些模特儿经常被雇用适合运动数据在一不合适或不适当举止。这主要是因为到可观的程度，联系模型的边界条件为数据建模被忽略。这里，我们考察了几使用得广泛地的吸附运动模型并且对他们的边界条件给予了更多的注意。我们相信评论为吸附某些意义和改进是运动建模。

简介：Studiesonkineticsofadsorptionandreleaseofphosphorusbysoil,anewfieldinsoilchemistry,beganonlyovertenyearsago(Heetal.,1989;WangandZhu,1988;ZhangandZhang,1991;Lin,1989;LinandXue,1989;Jiang,1993;Xueetal.,1995;LUetal.,1997).

简介：１ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅＧａＩｎＡｓＳｂａｎｄＡｌＧａＡｓＳｂｑｕａｔｅｒｎａｒｙａｌｏｙｓｍａｔｃｈｅｄｔｏＧａＳｂｓｕｂｓｔｒａｔｅｓｈａｖｅａｇｒｅａｔｐｏｔｅｎｔｉａｌｉｔｙｆｏｒｌｏｎｇｗａｖｅｌｅｎｇｔｈｏｐｔｏｅｌｅｃｔｒ...

简介：Phosphatidylcholines(Ln’s)andtheirneutralanalogs1,2-diacyl-sn-glycerol-3-phospho-ricacidbromoethylesters(Pn’s)havebeenfoundtoexhibitdifferentaggregationbehaviorsbroughtaboutbyhydrophobic-lipophilicinteractions(HLI)bymeansofkineticprobeinMeOH-H2Obinaryaquiorganicsystems.Theeffectsofthestructureandtheenvironmentontheinterestingaggregationoftheamphiphilicmoleculesarediscussed.

简介：多晶的四角形的氧化锆的低温度老化行为被调查在阶段转变发生在这个过程期间上探索效果。XRD分析为阶段鉴定被进行并且对单斜晶的阶段转变四角形被决定。四角形的氧化锆多晶体的老化仅仅在标本的表面上与对单斜晶的阶段转变四角形的3个mol%Y2O3扳机做了，当在标本的体积内的穿入是很有限的时。在机械性质的细微减少也为40h在老化以后被观察。转变动力学表演标本上的一个成核和生长机制出现在在水环境的低温度老化主导。

简介：１ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｎｉｃｋｅｌａｌｏｙｓａｎｄｃｏｍｐｌｅｘｅｓａｒｅｗｉｄｅｌｙｕｓｅｄａｓｍａｇｎｅｔｉｃ，ｏｐｔｉｃａｌ，ｎｕｃｌｅａｒａｎｄｓｕｐｅｒｃｏｎｄｕｃｔｉｎｇｍａｔｅｒｉａｌｓ［１，２］．Ｍａｎｙｎｉｃｋｅｌｃｏｍ...

简介：TherewasasignificantcatalyticeffectoftraceGd(III)ionsontheoxidativereactionofpotassiumpersulfatewithSaffronTintheaceticacid–sodiumacetatebuffersolution.Thus,acatalytickineticfluorimetrymethodforthedeterminationoftraceGd(III)ionswasestablished.Thefactorssuchasacidity,concentrationofreagents,reactiontime,andtemperatureaswellasinfluenceofcoexistingionswerediscussed.Theoptimumreactionconditionswereestablished.Theapparentrateconstantandapparentactivationenergyofthereactionweredetermined.Thelinearrangeis0.02–0.10lgáml-1,andthedetectionlimitis7.27910-4lgáml-1.ThismethodwasusedforthedeterminationofgadoliniuminthesamplesoflanthanumacetatewithRSDof0.9%–3.1%.

简介：

简介：Inthispaper,weprovetheexistencetheoremsoflocbalorglobalclassicalsolutionstoStefanproblemswithvariouskineticconditionsatthefreeboundary.

简介：Anewtypeofmixturefuel,sludge-oil-coalagglomerate(SOCA),wascatalyticallygasifiedwithsteaminathermobalancereactorunderatmosphericpressure.Allthefourcatalystsstudied(K2CO3,CaO,NiOandFe2O3)werefoundcapableofenhancingthesteamgasificationrateandsignificantlyincreasingtheconversionofcarbon.TherankingofcatalyticactivitywasfoundtobeK2CO3CaO>NiO>Fe2O3.Amodifiedvolumetric-reactionmodelintheliteraturewasusedtodescribetheconversionbehaviorofthesteamgasificationstudiedbyevaluatingthekineticparameters.ExpressionsoftheapparentgasificationratesforSOCAwerepresentedforthedesignofcatalyticgasificationprocesses.

简介：Ferrumniobatewassynthesizedbysolid-phasesinteringmethodinavacuumcarbontubefurnaceat1300℃for180min.ThephasetransformationofferrumniobatecarbothermalreductionprocesswasstudiedbyXRD.ThereductionreactionsofferrumniobateindifferenttemperaturestagesweredeterminedbytheTG-DSCcurve.Meanwhile,accordingtotheTGcurve,thereactionkineticsparameterswerecalculatedbyA.W.Coatsintegrationandthecontrolstepsindifferenttemperaturestageswereascertained.Theresultsshowedthatthereductionofferrumniobatestartsatthetemperatureof1000℃,andthereductionprocesscarriesoutintwostepsaccordingtosinteringtemperature.Inatemperaturerangeof1000-1238℃（thefirststep）,themainreductionproductsareNbO2andFe;thekineticequationofinitialstageis[-ln（1-α）]4=kt,controlledbynucleationgrowth,andtheapparentactivationenergyis388kJ/mol;withthetemperatureincreasing,thekineticequationisα＋（1-α）ln（1-α）=kt,whichistheValensitwo-dimensionaldiffusionkineticequation,andtheapparentactivationenergyis264.4kJ/mol.Themainreactioninarangeof1238-1344℃（thesecondstep）isthereductionofNbO2toNbC,thekineticequationis[（1-α）-1/3-1]2=kt,whichiscontrolledbythethree-dimensionaldiffusion,andtheapparentactivationenergyis482.7kJ/mol.

简介：

简介：Weproposeacatalysis-selectmigrationdrivenevolutionmodeloftwo-species(A-andB-species)aggregates,whereoneunitofspeciesAmigratestospeciesBunderthecatalystsofspeciesC,whileunderthecatalystsofspeciesDthereactionwillbecomeoneunitofspeciesBmigratingtospeciesA.MeanwhilethecatalystaggregatesofspeciesCperformself-coagulation,asdothespeciesDaggregates.Westudythiscatalysis-selectmigrationdrivenkineticaggregationphenomenausingthegeneralizedSmoluchowskirateequationapproachwithCspeciescatalysis-selectmigrationratekernelK(k;i,j)=KkijandDspeciescatalysis-selectmigrationratekernelJ(k;i,j)=Jkij.Thekineticevolutionbehaviourisfoundtobedominatedbythecompetitionbetweenthecatalysis-selectimmigrationandemigration,inwhichthecompetitionisbetweenJD0andKC0(D0andC0aretheinitialnumbersofthemonomersofspeciesDandC,respectively).WhenJD0KC0>0,theaggregatesizedistributionofspeciesAsatisfiestheconventionalscalingformandthatofspeciesBsatisfiesamodifiedscalingform.AndinthecaseofJD0KC0<0,speciesAandBexchangetheiraggregatesizedistributionsasintheaboveJD0KC0>0case.

简介：40Ca+离子的平均动能被在一个rf离子陷井蒸发离子的方法测量。离子40Ca+的动能与从10改变缓冲区气体压力从0.5eV变化到0.2eV[?]7mbar到10[?]5mbar。Brownian运动模型也被介绍计算套住的离子的平均动能。[从作者抽象]

简介：Elovich,parabolicdiffusion,powerfunctionandexponentialequationswereusedtodescribeKdesorptionkineticsof12soilsinaconstantelectricfieldofelectro-ultrafiltration(EUF),ResultsshowedthattheElovich,parabolicdiffusionandpowerfunctionequationscoulddescribeKdesorptionkineticswellowingtotheirhighcorrelationcoefficientsandlowstandarderrors;buttheexponentialequationwasnotsuitabletobeusedinthisstudyduetoitsrelativelylowcorrelationcoefficientsandrelativelyhighstandarderrors.Thisworkestablishedsuccessfullytherelationshipsbetweentheconstants(slopeorintercept)ofkineticequationsandthebarleyresponsestoKfertilizerinthemultiple-sitefieldexperimentsandK-supplyingstatusofsoilsk,theconstantsofElovich,parabolicdiffusionandpowerfunctionequationswereverysignificantlyorsignificantlycorrelatedtothesoilavailableK,relativeyieldofbarleyandKuptakeofbarleyinNPplot.ItwassuggestedthatthekineticequationconstantscouldbeusedtoestimateK-supplyingpowerofsoils.

简介：Thegas-kinetictheorybasedfluxsplittingmethodhasbeensuccessfullyproposedforsolvingone-andtwo-dimensionalidealmagnetohydrodynamicsbyXuetal.[J.Comput.Phys.,1999;2000],respectively.Thispaperextendsthekineticmethodtosolvethree-dimensionalidealmagnetohydrodynamicsequations,whereanadaptiveparameterηisusedtocontrolthenumericaldissipationinthefluxsplittingmethod.SeveralnumericalexamplesaregiventodemonstratethattheproposedmethodcanachievehighnumericalaccuracyandresolvestrongdiscontinuouswavesinthreedimensionalidealMHDproblems.

简介：ConstructingareasonablereactionkineticmodelforCr-containingwasteincinerationisofhighsignificancetostudytheeffectofvariousfactors,suchastemperature,Cl,onitshexavalentchromiumcompounds.Inthispaper,aprimaryCr/H/Air/ClreactionkineticmodelisbuiltandstudiedbyGaussian03codewithquantumchemistrytheory.Numericalresultsshowthattherearetwooverallreactionsinthemodel,eachofthetwooverallreactionsconsistsoftheirrespectivetwoelementaryreactions.Sothetwooverallreactionsshouldbeomittedfromthemodel.Instead,thefourelementaryreactionsshouldbeaddedintheCr/H/Air/Clreactionkineticmodel.Theactivationenergiesofthefourelementaryreactionsarealsocalculated.

简介：一个新kinetic-spectrophotometric方法为铜(II)的决心被建议。方法在弱酸的氧化上基于铜(II)的催化效果由氢的灿烂的蓝染料(RAWL)过氧化物。铜(II)罐头determinedspectrophotometrically由在λ=626nm测量RAWL的吸收度的减少正在使用thefix时间方法。最佳反应条件如下：pH7.20，缓冲区solutionNaOH-KH_2PO_4，RAWL(200mgL~(-1))5.00mL，H_2O_2(30%)0.50mL，反应温度80℃和反应预定20min。这个方法的线性范围在0μgL~之间(-1)和12μgL~(-1)和察觉的限制是0.011μgL~(-1),在五的相对标准差(RSD)为2和8μgL~复制决心(-1)铜(II)是3.2%并且2.3%分别地。二十个离子不介入铜(II)的决心。方法在淡水样品令人满意地被用于铜(II)的决心(从Lijin的自来水和黄河水，山东，中国)并且海水样品(从华南海)，恢复率是98.0%,102.5%并且96.0%分别地。

简介：Inordertoimplementlarge-scaleandhigh-betatokamaksimulation,anewalgorithmoftheelectromagneticgyrokineticPIC（particle-in-cell）codewasproposedandinstalledontheGpic-MHDcode[GyrokineticPICcodeformagnetohydrodynamic（MHD）simulation].Inthenewalgorithm,thevorticityequationandthegeneralizedOhm’slawalongthemagneticfieldarederivedfromthebasicequationsofthegyrokineticVlasov,Poisson,andAmperesystemandareusedtodescribethespatio-temporalevolutionofthefieldquantitiesoftheelectrostaticpotentialφandthelongitudinalcomponentofthevectorpotentialAz.Thebasicalgorithmisequivalenttosolvingthereduced-MHD-typeequationswithkineticcorrections,inwhichMHDphysicsrelatedtoAlfvenmodesarewelldescribed.Theestimationofperturbedelectronpressurefromparticledynamicsisdominant,whiletheeffectsofothermomentsarenegligible.Anotheradvantageofthealgorithmisthatthelongitudinalinducedelectricfield,Etz=-■z/■t,isexplicitlyestimatedbythegeneralizedOhm’slawandusedintheequationsofmotion.Furthermore,theparticlevelocitiesalongthemagneticfieldareused（vz-formulation）insteadofgeneralizedmomentums（pz-formulation）,hencethereisnoproblemof’cancellation’,whichwouldotherwiseappearwhenAzisestimatedfromtheAmpere’slawinthepz-formulation.ThesuccessfulsimulationofthecollisionlessinternalkinkmodebythenewGpic-MHDwithrealisticvaluesofthelarge-scaleandhigh-betatokamaksrevealedtheusefulnessofthenewalgorithm.