简介：Thepaperproposesreactiongraphsasgraphicalrepresentationsofcomputationalobjects.Areactiongraphisadirectedgraphwithallitsarrowsandsomeofitsnodeslabeled.Computationsaremodledbygraphrewritingofasimplenature.Thebasicrewritingrulesembodytheessenceofboththecommunicationsamongprocessesandcut-eliminationsinproofs.Calculiofgraphsareideentifiedtogiveaformalandalgebraicaccountofreactiongraphsinthespiritofprocessalgebra.Withthehelpofthecalculi,itisdemonstratedthatreactiongraphscapturemanyinterestingaspectsofcomputations.

简介：六角形的硼氮化物陶器(h-BN)基于B的nitridation，粉末被反应sintering获得方法。结果的产品的机械性质和微观结构上的sintering温度的效果被调查，反应机制被讨论。结果证明在B和N2之间的反应在从1000瀠潨潴畬業敮'諟Ｉⅹe数瑣潲捳灯?的温度有力地发生了堠爭祡瀠潨潴汥'虪箿e数瑣潲捳灯?堨卐?愠摮氠晩瑥浩?敭獡牵浥湥獴

简介：作者与快可逆反应考虑一个反应散开系统的有限体积近似。它从priori被推出估计近似答案收敛到反应散开问题的弱答案并且满足不取决于运动的率的估计。因而，解决方案收敛到一个非线性的散开问题的解决方案，作为当运动的率趋于到无穷时，元素和时间步集成到零的卷的尺寸。

简介：本文根据在常见的物化教材中半衰期的通式和用半衰期确定反应级数的方法的知识,推导出其它反应时间的通式和用其它反应时间与浓度的关系确定反应级数的方法.

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简介：Processmodelsareveryusefultocontrolhighefficientindustrialmetallurgicalprocesses.Howevertheiraccuracydependsstronglyonthechoiceofboundaryconditionsandthermodynamicaswellaskineticdataused.WhereasthecommercialdatabaseFactSageorThermocalcisusedasthesourceofthermodynamicdatathekineticparameterarecharacteristicforeachprocessandprocessdesign.Thereforeitisessentialtoestimatethekineticparameterinwelldesignedexperimentssupportedbyusingofnumericalmethods.Inthispaperthesteelmeltflowparameter,gas-meltinterfacialareaandmasstransfercoefficientobtainedin30tindustrialgasstirredladlesaredescribed.Ontheexampleofnitrogenabsorptionanddesorptionthepredictiveprocessmodelfornitrogencontrolwhileladletreatmentanddecarburisationprocessispresentedfordifferentsteelalloys.Themodellingresultsarecomparedwithresultsfromindustrialprocesses.

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简介：O'-sialon-ZrO2compositebasedonthecheapcommercialavailablezirconandsiliconasrawmaterialscanbeachievedbyusingreac-tionnitridationmethod,Moreattentionwasgiventothenitridingprocessandtheeffectofadditivesonit.Theexperimentalresultsshowthattherearetwonitridationpaths:oneisthedirectnitridationofsiliconpowderandtheotheristhroughthereactionbetweenthemedi-umcompoundZrSi2andthenitrogen.Theeffectsofadditionofcalciaandtheincorpora-tionofBNonthenitridingreactionwerealsoinvestigated,theprimitiveexperimentalresultsdemonstratedthatbothofcalciaandBNcoulddeterioratethenitridingdegree.

简介：TheX-rayphotoelectronspectroscopy(XPS)techniquewasusedtostudythereactionofphenylisocyanateandcellulosewithdifferentmoisturecontents(MC).TheC1SXPSpeakofcelluloseisonlyonesymmetricalcontributionat285.95eV.WhiletheC1SXPSpeaksofN,N-dibenzylurea,thereactionresultantofphenylisocyanateandwater,havetwocontributionsat288.6±9.1eVand284.7±0.1eVcorrespondingtothecarbonylgroupandphenylringgroup,respectively.Theirarearatioisbetween11.88and11,98thatisquiteneattothetheoreticalvalueof12.0.Withthemoisturecontent(MC)ofcelluloseincreased,theproportionofisocyanatereactedwithwaterincreased.WhentheMCreaches9.78%,92.98%ofallconsumedisocyanatewillreactwithwater.Byspatteringanalysis,itrevealsthatthereactionresultantsofbenzylisocyanatedistributemainlyonthesurfaceofcellulose.

简介：<正>Ethnomusicologyasanemergingdisciplinehasmanykindofstatement.ThroughreadingMkolinski’article《ThesubjectandmethodofEthnomusicology》andthinkofethnomusicologyresearch.TheethnomusicologyIntheprocessofdevelopmentusedtomanykindsofMethodologyandinthisarticlesothatmethodologybycomparingtheperiodscholarswecanfoundethnomusicologyinthecourseofhistory.Thisarticledescribesthemethodfromanumberofmusicologists.

简介：Inthispaper,weconsiderthedeadcoreandsomeasymptoticbehaviorsofsolutionstotheinitialboundaryvalueproblemsoftheequationu_t=△u-λupeu,where>0,0

简介：Reaction-diffusion(RD)equationwasoftenusedtoinvestigatethepatterndynamics,buttelegraphreaction-diffusion(TRD)systemwasseldomstudied.Inthispaper,theIzhikevichmodelwasmodifiedtoexplainsomebiologicalmechanismsbyRDandTRDinneuronalcluster.Thenanewconditionunderwhichthesystemlosesstabilitywasproposedandtheeffectofparameters,diffusion,memoryandsteadystatewereconsideredontheprocessofneuronalspiking.Themethodpresentedisanovelapproachtoinvestigatethepatterndynamicsofbiologicalsystems.Finally,simulationsarecarriedouttovalidateourtheoreticalresults.

简介：Asatypicaloscillatingchemicalreaction,studiesoftheBelousov-Zhabotinskyreactionhavenotonlyyieldedimportantresultstoprovideinsightstomanykineticandthermodynamicproblems,butalsoprovidedsuggestivemodelsforanumberofimportantbiologicalprocesses.NowtheBZreactionhasbecomeausefulexperimentalmodelforstudyingnonlinearphenomenaindistributedsystems.WecarriedoutasystematicstudyoftheinfluencefactorsontheBZreactioninaclosedsystem,andsomenewobservationsarereportedhereforthefirsttime.

简介：Thesingularlyperturbedinitialboundaryvalueproblemsforreactiondiffusionequationsareconsidered.Undersuitableconditionsandbyusingthetheoryofdifferentialinequality,theasymptoticbehaviorofsolutionforinitialboundaryvalueproblemsarestudied,wherethereducedproblemspossesstwointersectingsolutions.

简介：Thereactionofsillimanitewithaluminaattemperatures1650℃an1750℃hasbeeninvestigated.Theresultshaveshownthat,inthelaboratorytestconditions,thehigherthealuminacontent,thelowerwillbetheamountsofglass-phseofthefiredbodyandthehigherwillbetheformationofmullite.Inthepresenttests,however,thereactioninconcernhasnotbeencompleted,thereactioninconcernhasnotbeencompleted.Someuncombinedresidualaluminastillexistintheformofcorundum.

简介：Halogenationofthepotassiumorsilversaltsofbis(trifluoromethanesulfonyl)methane(CF3SO2)2CH2anditscycloanalogues1withN-fluoro-bis(trifluoromethanesulfonyl)imine[(CF3SO2)2-NF],chlorineorbrominegavegoodyieldsofthecorrespondingα-halodisulfone(CF3SO2)2CHXandcycloanalogues9,10.Thechemicaltransformationofthesefluorinatedα-halo-disulfonesaredescribed.

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