简介：TheincompactlongafterglowpigmentSrAl2O4:Eu,Dywassynthesizedbyceramicstechnology.TheagglomeratedstartingrawmaterialhadlittleeffectonthesynthesisofSrA12O4matrixthroughsolid-statereactionmethod,buttheshrinkageanddensificationwasretardedgreatlybytheagglomeratedpowderbytheformationoflargeandextensiveporenetwork.Thesinteringmechanismissurfacediffusion(withoutfluxB2O3)andgrainboundarydiffusion(withB2O3asflux)respectively,andtheas-preparedlongafterglowpigmentglowsinthedarkforover4000min.

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简介：Thesorptionbehaviorandmechanismofanovelchelateresin,diglycolamidicacidresin(DAAR),forSm(lll)wereinvestigated.TheoptimalsorptionconditionofDAARforSm(lll)ispH=6.0inHAc-NaAcmedium.Thestaticallysaturatedsorptioncapacityis190mg/gresinat298K.TheSm(lll)adsorbedonDAARcanbeelutedreaching100%by0.5-2.0mol/LHCIusedaseluant.Theresincanberegeneratedandreusedwithoutapparentdecreaseofsorptioncapacity.Theapparentsorptionrateconstantisk298=1.96×10^-5s^-1.Theapparentactivationenergyis26kJ/mol.ThesorptionbehaviorofDAARforSm(lll)obeystheFreundlichisotherm.Thethermodynamicsorptionparameters,enthalpychangeΔHofDAARforSm(lll)is16.9Kl/mol.ThemolarcoordinationratioofthefunctionalgroupofDAARtoSin(111)is3.ThesorptionmechanismofDAARforSm(lll)wasexaminedbyusingchemicalmethodandIRspectrometry.ThecoordinationbondwasformedbetweenoxygenatomsinthefunctionalgroupofDAARandSin(Ill).

简介：Theheattransferoil-basedmagnetorheologicalfluid（MRF）waspreparedusingoleicacid-modifiedmicroncarbonylironpowderasamagneticdispersedphaseandstrontiumhexaferrite(SrFe12O19)nanoparticlesasanadditive.ThesedimentationstabilityofMRFswasstudied.TheresultsindicatedthatthestabilityofMRFswasimprovedremarkablybyaddingSrFe12O19nanoparticlesandthesedimentationratiowasonly0.88in20dayswhenthecontentofnanoparticlesreached10wt%.TheTheologicalpropertieswerecharacterizedbyaHAAKErheometerwithoutamagneticfieldandacapillaryrheometerwithandwithoutamagneticfield.TheeffectsofSrFe12O19nanoparticles,thetemperature,andmagneticfieldstrengthwereinvestigated.Inaddition,therheologicalpropertiescouldbepredictedwellusingtheimprovedHerschel-Bulkleymodel,evenunderamagneticfield.AtheoreticalmodelwasalsoproposedtopredicttheyieldstressbasedonthemicrostructureoftheMRFunderanappliedmagneticfield.

简介：Sm(Ⅲ）wasquantitativelyadsorbedbyaminomethylenephosphonicacidresin(APAR)inthemediumofpH=5.0,Thestaticallysaturatedsorptioncapacityis251mg/g.resin.Sm(Ⅲ）adsorbedonAPARcanbereductivelyelutedby2.0mol/LHCl.Thesorptionrateconstantisk298=1.35×10^-5s^-1.ThesorptionbehaviorofAPARforSm(Ⅲ）obeystheFreundlichisotherm.TheenthalpychangeΔH°ofsorptionis24.9kJ/mol.TheapparentactivationenergyisEa=11.7kJ/mol.ThesorptionmechanismshowsthatthenitrogenandoxygenatomsofthefunctionalgroupofAPARcoordinatedwithSm(Ⅲ）toformcoordinationbond.

简介：DopedSrTiO3capacitor-varistormultifunctionalceramicswerefabricatedbyasinglesinteringprocess.ACcompleximpedanceanalysiswasperformedtoinvestigateelectricalfeaturesofgrainsandgrainboundariesforbothas-reducedceramicandreoxidizedceramics.Theresultsshowedthattheas-reducedceramicexhibitedinductiveresponseathighfrequenciesabove2MHz,whichisattributedtothecontributionofelectronbehaviorinsemiconductinggrains.Thehighfrequencyinductiveresponsedisappearedinimpedanceplotsofreoxidizedceramics.

简介：Thepresentpapercontainsthereactionmechanismoftherareearthcomplexwith2-(2-arsenophenylazo)-7-(2,6-dichloro-4-fluoro-phenylazo)-1,8-dihydroxynaphthalene-3,6-disulfonicacid(DCF-arsenazo)studiedpreliminarilywithafullyautomatedstopped-flowanalyzer.AmethodwithahighsensitivityandselectivityisproposedforthesimultaneousdeterminationofsamariumandgadoliniumbasedonthedifferentialkineticreactionoftherareearthcomplexwithDCF-arsenazo.SmandGdintheirconcentratedoxidesweredeterminedwiththerelativeerrorslessthan6%.

简介：Sr原子的运动过程在He-Sr的亚稳亚稳的转变激光纵的搏动的分泌物被分析，一个简明前後一致的物理模型被开发。分泌物参数，主要粒子密度，电子温度，和放射激光的脉搏的时间的进化是数字地计算的。模型提供的结果同意有实验的井，和每激光脉搏的时间的行为被模拟结果成功地解释。[从作者抽象]

简介：Themonophthalocyaninecomplexesofsamariumandterbiumcontainingaxial2-mercaptobenzothiazole(PcSm(MBT)(1)),2-(2-benzoxazol-2-yl)phenolate(PcTb(OON)(2))or2-(2-benzothiazol-2-yl)phenolate(PcTb(SON)(3))ligandsweresynthesizedandidentifiedbyelemental,LDI-TOFandX-ray(for1)analysis.Photoluminescence(PL)andelectroluminescence(EL)spectraofthecompoundscontainedonlyemissionbandsofphthalocyanineandaxialligandsbutdidnotcontainthebandsoff-ftransitions.Itwasfoundthatamongthecomplexes1,2,3thelatterhadhighestphotoconductivity(~10–7S/cm)andphotovoltaicproperties.Anorganicphotovoltaicdevice(OPV)ofconfigurationofITO/3/C60/Alq3/Alrevealedopen-circuitvoltage(VOC)of0.24Vandshortcurrentdensity(ISC)of0.3μA/cm2underilluminationbyaxenonlampat17mW/cm2.

简介：Tianqiaocarbonate-hostedPb-Zndeposit,controlledbyNW-trendingF37thrustfaultandNW-trendingTianqiaoanticline,islocatedintheeasternpartofSichuan-Yunnan-Guizhou(SYG)Pb-Znmetallogenicprovince,southwesternYangtzeBlock,southwestChina.OrebodiesinthisdepositarehostedintheDevonian-Carboniferouscarbonaterocks,andoremineralsincludesphalerite,galenaandpyrite,whiletheganguemineralsaredominatedbycalciteanddolomite.Usinghigh–precisionsolidthermalionizationmassspectrometry(TIMS),thispaperreportsthestrontiumisotopiccompositions(0.7119to0.7167)ofsulfidesamplesfromtheTianqiaodepositinordertotracetheoriginofhydrothermalfluids.Comparedwiththecountryrocks,thecalculated87Sr/86Sr200Mavaluesofsulfiderangefrom0.7118to0.7130,higherthanthoseoftheage-correctedDevoniantoPermiansedimentaryrocks(0.7073to0.7101)andtheMiddlePermianEmeishanfloodbasalts(0.7078to0.7039),butlowerthanthoseoftheage-correctedProterozoicbasementrocks(suchastheKunyangandHuiliGroups,87Sr/86Sr200Ma=0.7243to0.7288).Thisimpliesamixedstrontiumsourcebetweentheolderbasementrocksandtheyoungercoversequences.Togetherwithgeologicandpreviousisotopicevidences,weconsideredthatthefluids'mixingisapossiblemechanismforsulfideprecipitationintheTianqiaodeposit.

简介：Theeffectsofsamarium(Sm)oncarbon-methanationandcatalyticactivityoftheBa-Ru-K/AC(activecarbon)catalystforammoniasynthesiswereinvestigated.Theadditionofsamariumimprovedsignificantlytheactivityandstabilityofthecatalyst.Theresultsoftemperature-programmeddesorption(H2-TPD)andin-situ-TPSRFTIRindicatedthatsamariumimpededtheadsorptionofhydrogenonthecatalystsurface,thusleadingtothehighcatalyticactivityandresistancetocarbon-methanation.XRDpatternsreve...

简介：ThesolventextractionofPr(Ⅲ)andSm(Ⅲ)withtrialkylphosphineoxide(Cyanex923)inchloroform,carbontetrachloride,n-octane,cyclohexane,1,2-dichloroethane,benzene,toluene,xyleneandnitrobenzenefromacidicnitratemediumwasinvestigated.Onthebasisofslopeanalysisdata,thecompositionoftheextractedspecieswasdeterminedas(M(NO3)3?2CY923),CY923referstoCyanex923.Thevaluesoftheequilibriumconstantsandtheseparationfactorswerecalculated.Theeffectofthediluentsonthemetalextracti...

简介：钡锶铝矽酸盐(BSAS)和Si/BSAS涂层经由一个二拍子的圆舞激光cladding过程在C/SiCcomposites的表面上被制作。微观结构，机械性质，和样品的水蒸汽腐蚀行为被调查。BSAS涂层被发现紧被结合到底层和仅仅一些毛孔，microcracks被观察。硅中间层的介绍被揭示减少热应力并且支持在激光cladding过程期间形成的缺点愈合。为了评估腐蚀抵抗，BSAS和Si/BSAS-coated，C/SiCcomposites暴露于50%H2在1250敢椠?慦桳潩的O和50%O2吗？

简介：AninorganicnanomaterialscombinationofSm,Ag,andTiO2wassynthesizedusingsupercriticalfluiddrying(SCFD)combinedwithsol-geltechniques.Thestructure,photocatalysisandbacteriostaticactivityofthematerialswerecharacterizedbyX-raydiffraction(XRD),transmissionelectronmicroscopy(TEM),X-rayphotoelectronspectroscopy(XRPS),photocatalyticperformance,andantibacterialactivityexperiments.TheXRDresultsshowedthattheaverageparticlediameterofSm/Ag/TiO2was14.62nmandAgandSmionsweredispersedonthesurfaceofTiO2inahighlydispersed,amorphousform.TheTEMimageshowedthatthesizeoftheparticlewas12nmusingtheschererformula.TheXPSresultshowedthattheelementSmwasdopedandAgwasloadedinorganicnanomaterialssuccessfully.Sm/Ag/TiO2exhibitedoptimalphotocatalyticpropertiesat600oC,thephotocatalyticoptimalproportionofSm/Ag/TiO2was2:2:100.Whenthemolarratiowas2:2:100,thebacteriostaticcirclediameterwas16mmforStaphylococcusaureus,theminimumbacteriostaticconcentrationwas200μg/mLforwhitebeadscoccus,andtheminimumbactericidalconcentrationwas2×104μg/mLforwhitebeadscoccus.TheSEMresultsshowedthattheantibacterialmaterialattachedtothecandidaalbicanscellsurface,cellsappearedfolddeformation.ThereforetheinorganicnanomaterialsSm/Ag/TiO2hadhightemperatureresistance,goodphotocatalyticandantibacterialcharacteristicsinvisiblelight.

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简介：一系列新奇的镧锶铝酸盐黄磷，Ce3+-dopedLaSr2AlO(5-0.5x)Fx(LSAF)黄磷成功地在减少空气下面用高温度的稳固的州的合成过程被综合(H2/N2=1/4)。X光检查衍射模式表明那件LSAF样品是纯LaSr2有1250的sintering温度的AlO5阶段?桰獯桰牯?祢挠湯牴汯楬杮挠祲瑳污映敩摬攠癮物湯敭瑮眠瑩?汦潵楲敮椠湯?猼灵?猯灵>

简介：钡铁酸盐micro/nano纤维成功地经由由把dimethylformamide(DMF)用作溶剂的静电的旋转被准备，并且poly乙烯基pyrrolidone(PVP)作为旋转auxiliaries。结构，形态学，和磁性上的锶替换的效果被扫描电子调查显微镜(SEM)，X光检查衍射分析(XRD)，和颤动取样磁强计(VSM)。样品的XRD模式证实纯钡铁酸盐纤维形式，和Sr替换做主要山峰(110)，(107)，并且(114)稍微搬到右。另外，FE-SEM图象证明代替的纤维能保留的Sr完成含纤维的形态学。而且，当纤维在800点被锻烧时，VSM结果证明浸透磁化能到达56.7emu/g'

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