简介:ThepaperdescribestheeffectofadditivesAl,Si,SiCandB4ContheexpansionofMgO-ZrO2-Cmaterialafterbeingcoked.TheresultsindicatethatAlandSicannotincreaseitshotandcoldstrength.AlandSiwereoxidizedtoformAl2O3andSiO2respectively,andthenreactedwithCaZrO3orstabilizerinc-ZrO2toformcalciumaluminate,spinel(MA),dicalciumsilicate(C2S)andforsterite(M2S).Meanwhile,α-C2Swastransformedtoγ-C2Sandc-ZrO2tom-ZrO2whentemperaturechanged.AlltheabovereactionsresultedinthedecreaseoftheamountofAl4C3andSiCandtheincreaseinbulkvolume,whichcausedthestructureofMgO-ZrO2-Cmaterialdestroyed.Hence,contrarytotheMgO-Cmaterial,whenaddingAl.andSi,theMgO-ZrO2-Cmaterialwouldbestructurallydeterioratedafterheat-treatmentanditsstrengthandcorrosionresistancedecreased.
简介:高速数字信号处理器是当前信息产业的热点技术之一,采用最先进的DSP无疑会使所开发的产品具有更强的市场竞争力。DSP芯片放弃了冯·诺依曼结构,采用程序存储器总线和数据存储器总线分开的改进的哈佛结构,独立的程序和数据存储器空间允许同时存取程序指令和数据,因而大大提高了
简介:A2m~3isothermalcloudchambermainlyforicenucleationresearchisdescribedinthispaper.Itsstructure,attachedinstrumentsandexperimentalproceduresarealsopresented.TheexperimentsofdeterminingtheicenucleieffectivenessfortheAgl-containingaerosolsproducedbythreeformulationshavebeenconductedandtheresultshavebeencomparedwiththoseoftheCSU960-literisothermalcloudchamber.Allexperimentalresultsshowthatthechamberhasadvantagesofstableperformanceandreproducibility.Itwouldbeexpectedtobecomeausefulexperimentalfacilityforicenucleationresearch.
简介:教学目标:基础性目标:I.Knowledgeobjectives:Tolearntousethepresentprogressivetense.II.Abilityobjectives:Tolearntotalkaboutwhatpeoplearedoing.III.Moralobjective:Tolearntogetalongwellwithourfamilymembers,neighborsandfriends.Companyisthelongestconfessionoflove.发展性目标:1.Tohelpthestudentsdevelopthelisteningandspeakingskills.2.Toleadthestudentstoenhancetheresponsibilitiesofhome.
简介:Glioblastoma(GBM)isoneofthedeadliesttumorsandhasamediansurvivalof3monthsifleftuntreated.Despiteadvancesinrationallytargetedpharmacologicalapproaches,theclinicalcareofGBMremainspalliativeinintent.Sincethemajorityofalteredsignalingcascadesinvolvedincancerestablishmentandprogressioneventuallyaffectcellcycleprogression,analternativeapproachforcancertherapyistodevelopinnovativecompoundsthatblocktheactivityofcrucialmoleculesneededbytumorcellstocompletecelldivision.Inthiscontext,wereviewpromisingongoingandfuturestrategiesforGBMtherapeuticsaimedtowardsG2/Minhibitionsuchasanti-microtubuleagentsandtargetedtherapyagainstG2/Mregulatorslikecyclin-dependentkinases,Aurorainhibitors,PLK1,BUB,1,andBUBR1,andsurvivin.Moreover,wealsoincludeinvestigationalagentsinthepreclinicalandearlyclinicalsettings.Althoughseveraldrugswereshowntobegliotoxic,mostofthemhavenotyetenteredtherapeutictrials.TheuseofeithersingleexposureoracombinationwithnovelcompoundsmayleadtotreatmentalternativesforGBMpatientsinthenearfuture.