简介：Thisstudydealswiththerecyclingofcarbonsteelslag(CSS)toproduceself-consolidatingconcrete(SCC).SincethechemicalcompositionofCSSissimilartothatofPortlandcementorblastfurnaceslag(BFS),itisexpectedtobehavesimilarly.Inthecurrentstudy,thepozzolanicactivityindexofCSSisexamined.Furthermore,theuseofCSSasapozzolanicmaterialtopartiallyreplacePortlandcementintheproductionofSCCistested.Wedesignedconcretemixtureswithdifferentwater-tocementitiousmaterialratios(w/cm)keepingwaterandsuperplasticizer(SP)contentsconstant.ResultsshowedthatthedesignandperformanceofalltheconcretemixturesusedinthisinvestigationwerecomparabletothoseofSCCandhighperformanceconcrete(HPC).However,comparedtoordinaryplainconcrete(OPC),theadditionalCSScontentincreasesthesettingtime.IntheCSSmixturessetfor90d,compressivestrengthsof86%,134%and121%wereattainedascomparedtothecontrolconcrete;thecorrespondingw/cmratioswere0.28,0.32and0.40,respectively.VerifyingthesoundnessoftheSCCformeetingthecriteriaforHPC,theultrasonicpulsevelocity(UPV)ofCSSwasfoundtobecomparabletothatofordinaryconcrete.Inconclusion,therecyclingofCSScanbeadvantageouslyemployedintheproductionofSCC.

简介：TheultimatedetectionperformanceofHgCdTe,quantumwell(QW)andextrinsicSidetectorsunderlowtemperaturesisanalyzed.Thetheoreticallimitsoftheinternalphotonresponseforthethreedetectorsarecompared.Thematerialsofspace-baseddetectorsinspacetrackingandsurveillancesystem(STSS)arediscussed.Theresultsshowthatamongthreedetectors,thebestperformancecanbeobtainedfromHgCdTedetectorsunder40Kinthemid-longwaveinfrared(MLWIR)andlongwaveinfrared(LWIR)spectralregions.ItsultimatedetectivityintheMLWIRspectralregion,withacutoffwavelengthof8μm,isontheorderof1×1018cm·Hz1/2/W.AndthatintheLWIRspectralregion,withcutoffwavelengthsof12μm,16μmand20μm,isontheorderof1×1015cm·Hz1/2/W,1×1014cm·Hz1/2/Wand1×1013cm·Hz1/2/W,respectively.

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简介：ＩｎｔｒｏｄｕｃｔｉｏｎＣｅｒａｍｉｃ／ｍｅｔａｌｆｕｎｃｔｉｏｎａｌｙｇｒａｄｉｅｎｔｍａｔｅｒｉａｌ（ＦＧＭ）ｈａｓｇｒａｄｉｅｎｔｉｎｇｒｅｄｉｅｎｔｄｉｓｔｒｉｂｕｔｉｏｎ，ｓｏｉｔｓｐｒｏｐｅｒｔｉｅｓｏｆｔｈｅｈｅａｔｔｒａｎｓｆｅｒａｎ...

简介：Themainobjectiveofthispaperistostudythesingularnatureofthecrack-tipstressandelectricdisplacementfieldinafunctionallygradientpiezoelectricmediumhavingmaterialcoefficientswithadiscontinuousderivative.Theproblemisconsideredforthesimplestpossibleloadingandgeometry,namely,theanti-planeshearstressandelectricdisplacementin-planeoftwobondedhalfspacesinwhichthecrackisparalleltotheinterface.Itisshownthatthesquare-rootsingularityofthecrack-tipstressfieldandelectricdisplacementfieldisunaffectedbythediscontinuityinthederivativeofthematerialcoefficients.Theprob-lemissolvedforthecaseofafinitecrackandextensiveresultsaregivenforthestressintensityfactors,elec-tricdisplacementintensityfactors,andtheenergyreleaserate.

简介：MaterialFlowAnalysis（MFA）isacrucialinstrumentforsustainabledevelopmentandcreatingindustrialecologysystem.MFAstudiescouldbalanceandanalyzethesources,flows,andconsumesofspecificmaterialsorsubstances.TheresultsofMFAstudiescouldsupportthestrategiesordecisionsmakingforenergy,resource,andwastemanagement,especiallyachievingsustainableresourcemanagement.AtCSC,thedynamicsimulatingsoftware,STELLA,isusedtodevelopaMFAmodelforscenarioanalysis.CSCalsousesthefreewareSTAN2.0asatoolforvisualizingandsimulatingmaterialflowsandstocks.CasestudiesofgreenhousegasesMFAforintegratedsteelworksareconducted.Theresultsshowedthatthecarboncontentofhot-metalisanimportanthiddenflowforbalanceanalysis,andthedifferentGHGemissionscenariosandmitigationactionscenariosareassessed.Inaddition,theIron-makingGHGI/OMFAModel,basedonworldsteelGlobalSteelSectorApproach（GSSA）,isdevelopedforcalculatingtheCO2andenergyintensityofcokemaking,sintering,andBFprocesses.ThisMFAmodelwasusedtoanalyzetheCO2reductionpotentialforiron-makingprocess.ThecasesconductedforMFAapplicationsatCSCweresuchasgreenhousegas,zinc,etc.Inthefuture,CSCisgoingtodevelopa'CSCEnvironmentManagementandDecisionSupportingSystem'whichcombineMFA,LCA（lifecycleassessment）,andenvironmentriskassessment.Thissupportingsystemexpectstopromotingenergyefficiencyandbestresourceuse,supportingenvironmentpolicymaking,creatingenvironmentalinformationvalue,etc.

简介：ThisinvestigationpresentstheGreenfunctionsforadecagonalquasicrystallinematerialwithaparabolicboundarysubjecttoalineforceandalinedislocationbymeansofthecomplexvariablemethod.ThesurfaceGreenfunctionsaretreatedasaspecialcase,andtheexplicitexpressionsofdisplacementsandhoopstressattheparabolicboundaryarealsogiven.Finally,thestressesanddisplacementsinducedbyaphononlineforceactingattheoriginofthelowerhalf-spacearepresented.

简介：ThreekindsofKH2PO4rawmaterialareusedtogrowdeuteratedpotassiumdihydrogenphosphate(DKDP)crystalsbytraditionalandrapidgrowthmethods,respectively.Thegrowthhabitdependenceonthepurityofrawmaterialisdescribedandanalyzed.Theopticalpropertiesincludingtransmissionspectraandlaser-induceddamagethresholdofthesecrystalsaremeasured.Itisfoundthatthegrowthmethodaffectstheopticalpropertiesofcrystalmoreobviouslythantherawmaterialwiththemasscontentofmainmetalionsbelow1ppm.Moreover,themorphologyofthecoreintheobserveddamagesitesindicatesthatanexplosionprocessprobablyoccursduringlaser-inducedbreakdown.

简介：Regionaldevelopmentisacourseofaccumulationbasedonmanyfactors,whichisdirectlyrelatedtoresourcesutilizationandconversion.Andmaterialwealthproductionandaccumulationembodytheoutcomeofregionaldevelopment.Thus,focusingonmaterialwealth,regionaldevelopmentcanbeevaluatedfromresourcesandperspectiveofresourcesconversion.Takingtheinfrastructurallevel,transportationaccessibilityandeconomicdevelopmentlevelintofullaccount,theconceptof'material-baseddevelopment'waspresentedandthematerial-baseddevelopmentindex(MDI)modelwasestablished.ByusingtheMDImodel,geographicinformationsystemtechnologyandmathematicmethods,thisarticlethencalculatedMDIofeachcountyandprovinceofChinain2005andsystematicallyevaluatedthematerial-baseddevelopmentofChinaatcountyandprovincialscales,soastobringsomescientificreferencesandpolicy-makingsupportstothepopulationdevelopmentfunctionorientedzoningandpopulationspatialdistributionplanningofChina.Theresultshowedthat:(1)Atcountyscale,thematerial-baseddevelopmentofcountieswithinChinain2005wassignificantlydifferent,inwhichtherewere1876countiesbelongingtothemid-levelmaterial-baseddevelopmentandaccountedfor78.10%ofthetotal.Thenumbersofhigh-levelandlow-levelcountieswere144and382andaccountedfor6.00%and15.90%respectively,demonstratingaspindleshapeingeneral.Thespatialdistributionofmaterial-baseddevelopmentwasunbalanced,anditwasmuchbetterinsoutheasternpartofthelineof'Daxinganling–Yinshan-Liupanshan–southeastedgeofQinghai–TibetPlateau'thanthatofnorthwestern.Furthermore,therewerealsodifferencesofthesub-indexbetweendifferentmaterial-baseddevelopmentlevels.Therefore,fordifferentregions,keyissuesandmeasuresadaptabletolocalconditionshouldbeprioritizedandtakeninordertorealizeregionalbalancedevelopment.(2)Atprovincialscale,therewasalsosignificantdifferen

简介：Inthehostileandhighlycorrosivemarineenvironment,advancedcompositematerialscanbeusedinmarinecurrentturbinesduetotheirhighstrength-to-weightratiosandexcellentresistancetocorrosion.Acompositematerialmarinecurrentturbine(CMMCT),whichhassignificantadvantagesovertraditionaldesigns,hasbeendevelopedandinvestigatednumerically.Asubstantialimprovementinturbineperformanceisachievedbyplacementofaducttoconcentratetheenergy.Computationalfluiddynamics(CFD)resultsshowthattheextractedpowerofaductedCMMCTcanbethreetofourtimesthepowerextractedbyabareturbineofthesameturbinearea.TheresultsprovideaninsightintothehydrodynamicdesignandoperationofaCMMCTusedtoshortenthedesignperiodandimprovetechnicalperformance.

简介：Taolinglead-zjncdepositsarelocatcdinthcdismantlingfaultbeltonthenorthflankofDayUnshanrockmasslLiniangcountry,Hunanprovincc.Theyarelargescaledcpositscontrollcdbythedisman-tlingfautbclt’Theycosistoffivcindustrialorcbodics-DujiachongVinkongsban,Shangtangcbong,GuanshanandDuanshanorebody,andstrctchmorctl

简介：ＰＲＥＰＡＲＡＴＩＯＮＯＦＣＯＬＬＡＧＥＮ／ＨＹＤＲＯＸＹＬＡＰＡＴＩＴＥＣＯＭＰＯＳＩＴＥＦＩＬＬＩＮＧＰＬＡＳＴＩＣＭＡＴＥＲＩＡＬＡＮＤＡＮＩＭＡＬＥＸＰＥＲＩＭＥＮＴＳＴＵＤＹＰＲＥＰＡＲＡＴＩＯＮＯＦＣＯＬＬＡＧＥＮ／ＨＹＤＲＯＸＹＬＡＰＡ...

简介：超分子的紫外抵抗materiallayered修改的沥青的动态rheological性质加倍氢氧化物(LDH)被学习借助于动态砍电流计(数据设置就绪)测试。二典型基础沥青被选择，由2不同LDH的modifi编辑满足。数据设置就绪测试在原来的样品上被执行，在暴露了到以后，取样室外并且在artificial以后的样品分别地加速了紫外老化测试分析rheological性质。当LDH内容在沥青重量，高温度表演和疲劳的3wt%和5wt%之间时，它被发现那modifi编辑沥青的抵抗性质变得更好，紫外老化抵抗性质被改进。

简介：Fromtheprocessofsedimentationthemathematicalrelationshipsamongdepositionvolumeandpowderpropertiesaswellassedimentationparameterswerededuced.Basedontheformulaamathematicalmodelwassetupandsimulatedthroughthecomputer.AtlastthevalidityofmathematicalmodelwassupportedbytherepresentativeexperimentonTi-MosystemFGMpreparedbyco-sedimentation.

简介：TherearemanyprocessestoproduceCr2O3fromchrome-ores,DifferentparticlesizerangesofCr2O3powder,finepinmentgradegreenCr2O3andcoarsemetallurgygradeblackCr2O3,aremadebydifferentprocessesinChina,GreenCr2O3assuperfineandadditionandmetallurgygradeblackCr2O3usedtosynthesizeCr2O3graincanbeappliedtorefractories.ItisverydifficultforhighpurityCr2O3tosintertodensificationandTiO2additioniscontributedtodensificationofCr2O3sinteredathightemperature,Cr2O3grainswithrelativedensityof91%-95%aregainedbysinteringCr2O3withTiO2additionandelectrofusingCr2O3rawmaterials.

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简介：Rareearthluminescentmaterialisoneofthemostimportantapplicationsectorsofrareearths.Chinaenjoystheexceptionaladvantagetodeveloprareearthluminescentmaterialforitsabundantrareearthresources.Afterseveraldecades'endeavor,China'srareearthluminescentmaterialindustry,headedbyrareearthphosphorforlampandLEDandhighefficientrareearthenergy-savinglightsource,hasbeengraduallydevelopedintoascaleindustry.Chinahasbecomeamajorproductionbaseofrareearthphosphorforlampsandrareearth

简介：AkindofZrO2ceramicmaterialforporousmediaburnerwaspreparedbypolymericspongeprocesswithstartingmaterialsofzircon,zirconiapowder,microsilica,andballclay,andbinderofsilicasolthroughreaction-sintering.Theeffectsofmicrosilicaadditiononcoldcrushingstrengthandzirconia/zirconaddingratioonthermalshockresistancewerestudied.Theresultsshowthattheporousmediamaterialhasproperporosity,highstrength,andexcellentthermalshockresistancewhenzirconiaadditionis85%andzirconadditionis5%.Theperformanceindexesare:porosity82%,coldcrushingstrength3.1MPa,thermalshockresistancemorethan10cycles,andgoodthermalshockresistanceto1500℃flame.

简介：Themanufacturetechnologiesoftwokindsofbamboolaminatedpanelandtheirphysical-mechanicalpropertieshavebeenstudiedinthepaper.ThespeciesofbambooaretheD.yunnanicusHsuehetD.Z.LiinYunnanProvinceandP.heterocyclavar.pubescensOhwiinZhejiangProvince.Thedataareofferedinordertoprovideprooftoproducearchitecturalpanelbybamboomaterials.Theresultsshowasfollows:Laminatedbamboopanelcanbeproducedbythereconstructiontechnology,andthemechanicalprope...

简介：Twokindsofbigsympodialbamboo,D.YunnanicusHsuehandWhangee(D.MembranaceusMunro)andtheirphysicalandmechanicalpropertieshavebeenstudiedinthepaper.TheresultsshowedthatthewhangeehasbetterphysicalpropertiesthanthatoftheYunnanicus,suchashigherdensity,lowertangentialandlongitudinaldryshrinkages.ThatalsoshowedthatWhangeehasstrongermechanicalpropertiesinMORandMOE,compressivestrengthandshearstrengthparalleltothegrain.Comparedwithsomewoodspeciesusedinarchitecture,thephysicalandmechanicalpropertiesofthetwokindshavereachedtherequirementofsomewoodarchitecturestructurematerials.