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1.
Displaysbasedonorganiclightemittingdevices (OLEDs)havebecomepotentialre placementsofliquid crystaldisplays (LCDs)duetotheirwideviewingangle ,higherbright ness,easeofcolortunability ,fastresponsetimeandlowdrivingvoltage[1] .Thegreenor ganicELdisplayusingtris(8 h… 相似文献
2.
Itiswellknownthattheintergranularmi crostructureofsinteredNd Fe Bmagnetsplaysakeyroleindeterminingtheircoercivityandthermalstability[1,2 ] .Therefore ,itisimpor tanttofurthermodifyingtheintergranularmi crostructureviaalloyingorotherprocessingmethodinimprovi… 相似文献
3.
Rareearthfluorescentcomplexesareofawiderangeofapplicationsinlasersource,display,medicineandbiologicalstudiesbecausetheyaremorestablethansmallorganiccompoundsandtheirphotoluminescence(PL)exhibitssharpfluorescenceemissionbandandhighquantumyield[1~4].… 相似文献
4.
Effect of La~(3+)on Activities of Antioxidant Enzymes in Wheat Seedlings under Mercury Stress 总被引:2,自引:0,他引:2
Since 1 970s ,REEs (rareearthelements)fertilizerhasbeenextensivelyresearchedonapplicationinagricultureandtheirphysiologi caleffects .Thereweremanyexperimentalda ta .SomeresearchersreportedthatREEscannotonlypromoteplantgrowth ,butalsoen hancethestresstolerance .… 相似文献
5.
Rareearth (RE)micro fertilizershavebeenusedinagricultureproductioninChinasince 1 970s ,andthesemicro fertilizersaresaltsofmixedREs ,whichmainlyincludeLa ,Ce ,PrandNd[1,2 ] .PreviousstudiesshowthattheREinsurfacesoilalmostdoesnotmigratdownwardatallandthusbeaccumula… 相似文献
6.
Effect of Cerium on Activity of α-Amylase from Porcine Pancreas 总被引:1,自引:0,他引:1
Rareearthscanaffectchloroplastultra structure[1~ 3 ] andenzymeactivity[4~ 7] ,bywhichoflowconcentration ,biologicalfunc tionsareaccelerated ,butrestrainedathighconcentration .α Amylase ,whichbinds 4or 5calciumionsinformofdipolymer[7] ,playsanimportantroleinthecourseo… 相似文献
7.
ExperimentshaveconfirmedthatREFe12compoundsdonotexist.ThisphasecanbestabilizedbyreplacingsomeoftheironatomsbyasmallamountofotherelementssuchasTi,V ,Cr,Mn ,Mo ,W ,Re ,AlandSi ,andREFe12 -xMxintermetalliccompoundscanbeobtained[1] .Mcannotonlystabilizethestruc tureo… 相似文献
8.
Structure and Luminescence Properties of Eu~(3+) Doped SiO_2 Glass Synthesized by Sol-Gel Process 总被引:2,自引:0,他引:2
Amonglanthanideions ,Eu3 + ionposs esesgoodluminescentcharacteristics ,highcolorpurityandhighquantumefficiency .Eu3 + isoneofthecentralionsfirstselectedforthepreparationofrareearthionsdopedlumi nescentmaterials .Dafinovaetal .[1] producedEu3 + andSO2 -4 dopedtungsta… 相似文献
9.
《中国稀土学报(英文版)》2000,18(2):104
ICREisaseriesinternationalrareearthconferenceorganizedbytheChineseSocietyofRareEarths(CSRE).The4thInternationalConferenceonRareEarthDevelopmentandApplications(ICRE2001)willbeheldinBeijing,China,onJune1520,2001.TheChineseSocietyofRareEarthshasthepleasuretohostIC… 相似文献
10.
Studyonrareearthelements(REE)contentsinthemaintypesofsoilsinChinaisofsignificanceforfurtherexpoundingthechemicalbehaviorssuchasmobility,accumulationoftheREEinthesoilformingprocesses.Ontheotherhand,asREEavailabilityvarieswithsoilconditions,itisnotu… 相似文献
11.
Preparation,Photo and Electroluminescence Properties of Novel Rare Earth Aromatic Carboxylates 总被引:5,自引:0,他引:5
SinceKidoetal.havefirstreportedonorganicelectroluminescence (EL)usingrareearth (RE)complexastheemittinglayer[1] ,muchworkhasbeenfocusedonthisfieldduetoitshighcolorpurity[2~ 4] .However,thekeyproblemwithrareearthβ diketonecomplexesistheirpoorthermalstabilityand… 相似文献
12.
Itwasproved[1] thatrareearthelements(REE)promotethegrowthanddevelopmentofplants ,andincreasetheyieldofcrops .How ever ,theirmechanismarestilllittleknown .ItwasknownthatREEincreasestheactivitiesofsomeenzymesandacceleratestheproceedingofphotosynthesisinplants … 相似文献
13.
Thedesirableluminescencecharacteris ticsofsomelanthanideionsbasedontheintra f orbitaltransitionshavereceivedmuchatten tion.Rareearthcomplexes,especiallythosecontainingEu3 andTb3 ,oftenexhibitgoodluminescenceowingtothestrongabsorptionoftheorganicligandsand… 相似文献
14.
Distribution, Transportation and Cytolocalization of Neodymium in Oilseed Rape (Brassica napus L.) 总被引:1,自引:0,他引:1
魏幼璋 《中国稀土学报(英文版)》2001,(2)
Ithasbeenreportedthattherareearthel ements (REE)haveabeneficialfunctiononcropyieldandqualityaswellasstress resis tance[1] .However,mostoftheresearcheswerefocusedontheeffectsofREEcompoundoncropyieldindexes ,orlimitedattissuelev el ,whiletheresearchontheeffect… 相似文献
15.
InrecentyearsThMn12 typeiron richcompoundshavebeenintensivelyinvestigatedduetotheirexcellentpermanent magneticproperties .AlthoughpurebinaryRE Fecom poundsdonotexist,theThMn12 structurecanbestabilizedinpseudobinariesofthetypeREFe12 -xMx,withM =Al,Ti,Cr ,Si ,Mo ,V … 相似文献
16.
Thepoormechanicalpropertiesofcastmaterials ,especiallylowtoughness ,isamainfactorlimitingtheapplicationofprecisecastdies[1] .ThroughthemodificationofcastH1 3steelbyRE ,thedendritesegregationofCH1 3steelwasimprovedandgrainboundarycarbidewasalsoundercontrol.Acc… 相似文献
17.
Rareearths (RE)arepowerfultracersinthestudyofevolutionofgeochemicalsystems .Theyhavebeenusedoverthepast 3 0yearsasatoolforsolvingvariousgeologicalproblems .TheapplicationofREabundancestopetroge neticproblemshascenteredsofarontheevo lutionofigneousrocks ,whe… 相似文献
18.
Theaminoacyl tRNAsynthetases (aaRSs)playpivotalrolesinproteinbiosynthesis,whereeachofthe 2 0aaRSsisspecificforoneaminoacidanditscognateisoacceptorsoftRNA .TheinteractionofRE3 withtRNAwasstudiedbythemethodsofnuclearmagneticresonance[1 ,2 ] ,ultraviolet,fluoresce… 相似文献
19.
ThermodynamicsandPhaseEquilibriumofCu-Ce-O,Cu-Ce-S,Cu-Ce-O-SLiquidSolutionsDUTing;LIGuoDongThermodynamicsandPhaseEquilibriumo... 相似文献
20.
王龙妹 《中国稀土学报(英文版)》2002,20(2):98-103
Forthelightrareearthhydridesresearch ,asamatteroffact,inmostpublicationsthesolidsolutionoftherareearthdi andtrihy dridesweretreatedasacompletelyhomoge neous .EvidencesindicatingtheexistenceofdifferentphasesintheLaH2 LaH3 systemcamefromX raystudiesandneutro… 相似文献