简介：Premiereofcutting-edgecoolingapplianceusingrareearthmagneticrefrigerationtechnologyMagneticrefrigerationtechnologyhasattractedtheattentionoftheworldforitsadvantagesofhighefficiency,energyconservationandenvironmentalprotection.Asthebreakthroughmadeinmagneticrefrigerationmaterialsatroomtemperatureandmagneticrefrigeratorinrecentyears,moreandmorecountrieshavejoinedintheR&Dof

简介：DOEgrantaimedatimprovingprocesstoreducenuclearfuelwaste.An$800,000grantfromtheU.S.DepartmentofEnergywillallowPennStateresearcherstoinvestiga(teanewapproachforremovingrare-earthfissionproductsfromthemoltensaltbathswhereusednuclearfueliselectro-refinedtorecycleuraniumandminimizenuclearwaste.HojongKim,assistantprofessorofmaterialsscienceandengineeringatPennState,willusethegranttowardefficientrecoveryofrare-earthelementsusingliquidmetals.

简介：

简介：MSU-basedphysicistsstudiedcomplexmagnetisminarareearthcompoundDyGe3ordysprosiumgermanideisasilver-whiterareearthelementthatisnotveryoftenfoundintheEarthcrust.Itformsrefractoryoxidesthatarealmostinsolubleinwater.Duringthestudythescientistsappliedthepressureof8GPatoobtainpolycrystalsamplesofdysprosiumgermanideinametastablestatestateoflocalthermodynamicequilibriumcapableofchangingtoamorestablestateundercertainconditions.

简介：RecvclingtheRareEarthMetalsofE-WasteRecyclingthevaluablerareearthmetalsfoundinadvancedelectronicsfromsmartphonestoplasmascreenTVshasbeenachallengeforbothmanufacturersandenvironmentalgroups.Yaleresearchers,though,havedevelopedatechnologythatcouldrecoverthesematerialsforreuse.DesireePlata,theJohnJ.LeeAssistantProfessorofChemicalandEnvironmentalEngineering,andMegan

简介：

简介：

简介：

简介：Now,theworldhasenteredaneraofacceleratedglobalization,whichhasbroughtthequestionofnationalscientificand

简介：

简介：

简介：

简介：Baosteelstartedtheproductionofpipelinesteelintheearly1990s.Thecompanyhassofarproducedmorethan4MtofAPIX42-X80andhydrogensulfideresistantX52-X65steel.In2006,itsucceededinproducingX100andX120pipelinesteels,whichhavebeenusedinmanyimportantprojects,suchastheoiltransportingprojectintheTarimBasin,thepipelineprojectinSudan,theWesttoEastgaspipelineproject,theSino-Russianoiltransportingproject,etc.Baosteelhasmadegreatprogressinthepuritycontrolofpipelinesteel,thehomogeneitycontrolofslabcompositionandsurfacequalityoverthelasttenyears.Thecompanyhasachievedthisbyimprovingitssteelmakingequipmentandoperationmanagementtechnology,andbyintegratingitsprocesstechnology.Thephosphorusandsulfurlevelsofthepipelinesteelhavebeendecreasedto50ppmand12ppmrespectively(1ppm=10-6).

简介：Abstract:Extrusionisanefficientmeasuretoimprovethetextureandphysic-chemicalpropertiesofbrownrice.Thepolynomialdegreetwomodelofextrusiontechnologicalparametersandgelatinizeddegree,waterabsorptionindex,watersolubleindexandmoisturecontentofextrudedmatterwasobtainedbymethodsofsinglefactorandresponsesurfacemethodology,R2=0.9649,0.8745,0.9079,0.8677.Theoptimaltechnoiogica!parametersofbrownriceextrusionwerefiguredoutasfollows:moisturecontentofbrownrice,11.42%,speedofscrew,30rpm,feedingspeed,and20rpm.

简介：

简介：Likeallsocietieswhoseoriginspredatetheinventionofthewrittenword,manyaspectsofprehistoricTibetarelostinablurofmystery.YetarcheologistsarediggingintotheruinsleftbyTibet'searliesthumaninhabitantstohelpcarveawaythelackofknowledge,justasarthistoriansareexaminingancientpaintingsleftinsideTibetancavestosketchoutthecontoursofprehistoriclifeandartontheRoofoftheWorld.

简介：

简介：Carbothermalreductionandnitridation(CRN)ofzircon(ZrSiO4)permitsobtainingdifferentcompositesofoxidesandnitridessuchasZrO2-Si2N2OandZrN-Si3N4.Theeffectsoftechnologicalparameters(carbonsource,reactiontemperature,andcarboncontent)onthereactionrateandproductphasecompositionofCRNofzirconwereinvestigatedbyTGAandXRD.Theresultsshowthat:(1)carbonsourceisanimportantfactorforarapidreaction,andactivatedcarbonischosenasthecarbonsourceconsideringtheexpectproductsandreactionrate;(2)reactiontemperaturehasvitaleffectonreactionrateandproduct.Incaseofcarboncontentabove20%,thezirconphaseandm-ZrO2phasedecreasewithincreasingtemperature,whiletheZr7N8O4phaseincreasesfirstlyandthendecreases,andtheZrNphaseincreasescontinually;(3)differentcarboncontentsresultindifferentreactionproducts.Thehigherthecarboncontent,thelowerthestartingtemperaturefortheCRNofzircon.

简介：OrganizedbyChinaRareEarthInformationCenterandNationalRareEarthInformationNetworkandco-sponsoredbyInformationSpecialtyCommitteeofChinaRareEarthSociety,TechnologyandEconomySpecialtyCommitteeofChinaRareEarthSociety,NorthernRareEarthIndustryProductivityPromotionCenteraswellasmediaincluding'RareEarth

简介：IronmakingatBaosteelhasfocusedonblastfurnacesoverthelast30years.Afterpassingthroughthestagesof'learning','tracking','usage','experimentation','innovation'and'development',Baosteel'sproductioncapacityhasgrownsteadilyanditsstandardoftechnologyisincreasing.Remarkableprogresshasbeenmadeinthetechnologiesofblendingstack,thicklayersintering,lowsiliconandhighanhydroferritesintering,coalblending,andthehighproductivitywithhighpulverizedcoalinjection(PCI)rateandlongcampaignoftheblastfurnaces.Theentireironmakingprocessisdevelopinginthedirectionofhighefficiency,lowenergyconsumption,cleanproduction,andenvironmentalprotectionbecausethezerodischargeofsolidwasteandindustrialsewagehasbeenachieved.After20yearsofdevelopment,Baosteelhasbecomeamodernizedironproducerwithanannualcapacityof28.85Mtofsinter,7.26Mtofcokeand22.50Mtofhotmetal(PugangCorexfurnaceoutputincluded),anditsmaineconomicandtechnologicalindiceshavereachedaworld-classlevel.