简介：TheNaGd（WO_4）_2：Eu~（3＋）phosphorswerepreparedbythemicroemulsionmediatedhydrothermalmethod.ThemorphologyandsizeofthesamplescouldbedependentonthepHintheinitialsolution.Thesephosphorsobtainedhadastrongabsorptionat395nmmatchingwiththepopularemissionofnear-UVLEDchips,andcouldemitintenseredlightat616nm.Thesmallellipsoid-likeparticlesorshortrodswereprovidedwithlargeparametersofoscillatorstrength？_2andasymmetryratio.Comparedtotheellipsoid-likephosphors,therod-likephosphorstookonstrongeremission,longerlifetimeandlargerquantumefficiency.Thisworkdemonstratedthattheone-dimensionNaGd（WO_4）_2：Eu~（3＋）phosphorsmightbeamorefavorabledevicethanzero-dimensiononesforphotoluminescence.
简介：目的：了解南充市健康人群血清肿瘤标志物CA125，CA15—3，CA19—9的正常参考值范围。方法：采用全自动电化学发光免疫分析法测定1288名健康体检者的血清CA125，CA15—3，CA19—9水平。结果：健康体检人群血清CA199的浓度随着年龄增大而增高，二者呈正相关性，95％位数为23．69U／mL,血清CA125、CA153浓度受年龄因素的影响不大，95％位数分别为28．84U／mL、21．21U／mL。结论：确定肿瘤标志物正常参考范围，应以单侧最大95％位数为参考上限。南充市健康人群血清肿瘤标志物CA19—9、CA125和CA15—3的正常参考值范围分别为23．69U／mL、28．84U／mL和21．21U／mL。
简介：4,5-Diphenyl,4,5-di(4-methylphenyl),4,5-di(4-methoxyphenyl)-2-(2,5-dimethylthioph-en-3-yl)imidazolesweresynthesized.Oxidationoftheobtainedimidazoleswithpotassiumferricyanideinwater-alcoholsolutionofalkaligavethecorrespondingdimers.ThestructureswerecharacterizedbyIR,1HNMR,massspectroscopyandelementalanalysis.Thedimersshowedphotochromisminsolutiononirradiation.
简介：Longlastingstrontiumaluminatephosphorsweresynthesizedbymeansofcoatedprecipitationintheexperiment.SrA12O4monoclinicphasewithlongafterglowwassynthesizedat1100℃withtheaidofH3BO3,andthesynthetictemperaturedecreasedabout100℃-150℃thaninsolidstatereaction.TheprocessofheattreatmentwasstudiedbyTG-DTA.ThephasecompositionsofpowderswereanalyzedbyXRD.ThemicrographsofthesampleswereinvestigatedbySEMandtheluminescentpropertieswereresearchedbyopticalspectrum.TheeffectsofH3BO3onthephasecompositionandmicrostructureofthecalcinedpowderswereinvestigated.TheresultsindicatedthatH3BO3acceleratedtheformationofSrAl2O4byconsumingtheintermediatephase.TheadditionofDy2O3stimulatedtheafterglowpropertyduetotheincreaseinthedepthofthetrapcenterinthematerials.
简介：TheeffectofyttriaonthesolidreactionmechanismofaCaHPO4·2H2O+CaCO3systematdifferenttemperatureswasexperimentallystud-ied.Thesampleswithandwithoutyttriaweresubjectedtothermogravimetric/differentialscanningcalorimetrymeasurement.ThesampleswereheattreatedatthetemperaturescorrespondingtothepeaksontheDSCspectra,andtheresultedphasecompositionswereidentifiedbyX-raydiffraction.Thetransformationmechanismwasdeducedbycomparingthephasesobtainedatdifferenttemperatures.Theresultsshowthatthetransformationsatbelow1073Karenotaffectedbyyttria,butallthoseatabove1073Karecompletelyaltered.Theformationtem-peratureofhydroxyapatitedecreasesby134K,andthedecompositiontemperatureincreasesby38K.ThepolymorphoustransformationofCa3(PO4)2fromβphasetoαphaseincreasesby47K.Thethermodynamicpropertiesofthetransformationsatabove1073Karealsomodi-fiedbytheadditionofyttria;thatis,theendothermalpeaksaresubstitutedbyexothermalpeaks.
简介：肌质网（SR）Ca2+通道是镶嵌在SR膜上的蛋白质，位于靠近T管的终池部分，由四个亚基构成。Ca2+通道蛋白在功能上包括受体部分和Ca2+通道本身两部分，各种受体分别接受不同的刺激使Ca2+通道开放。Ca2+通道的适时开放与关闭，可能主要受SR上60KD蛋白质的磷酸化和去磷酸化的调节。
简介：AsimpleandefficientcascadeMichael/cyclizationreactionof3-aminoindolin-2-oneswithenones/enalswasidentifiedforthesynthesisofpotentiallybiologicallyactive3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles],usingDBUasanefficientcatalystandethyleneglycolasanenvironmentallybenignsolvent.Morediverse3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles]analoglibrarieswerepreparedingoodyields(upto97%).Thestructureof3’,4’-dihydrospiro[pyrrol-3,2’-oxindoles]wasconfirmedbymassspectrometryanalysis,NMRanalysisandsinglecrystalX-raydiffraction.Themainadvantagesofthismethodincludetheavailabilityofstartingmaterials,simpleexperimentaloperation,shortreactiontime,aswellashighyieldsobserved.
简介：[Co3(1,2-S2C6H4)3(PPh3)3][CoBr3(DMF)].sol(1,sol=CHCl3,O(C2H5)2,H2O)wasobtainedfromthereactionofCoBr(PPh3)3withNa2(S2C6H4)inchloroform.TheCo3coreinthecationof1exhibitsametal-metalbondedisoscelestriangle,inwhichthetwolongerCo-CobondsarebothbridgedbyS2C6H4ligandsontwosidesofthetriangleplanerespectively,whilethebottomshortCo-CobondisbridgedbythethirdbidentateS2C6H4ligand.Aseriesofpolynu-clearcobaltclustercompoundswithphosphine,thiolateand/orsulphurligandswerepreparedbylowoxidationstateCo+withthiolatesinorganicsolvents.Thesetri-,tetra-,hexa-,heptanuclearclustercompounds1-8withvarioustypesofcrystalstructurescanbeviewedasthecondensedpolynuclearcobaltcomplexesthatthecobaltatomframeworkswithsulphurbridgedwerebuiltthroughthesmalltriangularunitsof[Co3S3nL3](n=1,2)withorwithout[CoL](L=PR3,Br,Cl,5-C5H5)fragments.
简介：ThecrystalstructureofDi-nitratobis（ethylcaprolactam）uranyl（Ⅱ）UO2[CH2（CH2）4CONC2H5]2（NO3）2wasestablishedbyasingle-crystalX-raydiffractionstudy.Itistriclinie,spacegroupP1,witha=7.171（2）,b=8.655（3）,c=10.182（5）A,α=78.27（3）,β=70.63（3）,γ=81.76（3）°,V=581.7（4）A3,Z=l,Dc=1.94g.cm-3.FinalRvalueis0.0218.Theresultrevealsthaturanylioniscoordinatedtosixoxygenatoms,twoofthemarefromtwocarbonylgroupsofethylcaprolactamandtheotherfourarefromtwonitrategroups.
简介：在H2SO4-Fe2（SO4）3体系中研究载金黄铁矿的浸出动力学,探讨反应温度、Fe3＋浓度、硫酸浓度、搅拌速度等对黄铁矿浸出的影响规律。结果表明：在H2SO4-Fe2（SO4）3体系中,在30~75°C下黄铁矿浸出过程主要受化学反应控制Fe3＋浓度与黄铁矿的浸出呈正相关,通过Arrhenius经验公式求得浸出表观活化能为51.39kJ/mol。EDS与XPS分析结果表明：黄铁矿氧化过程中硫的氧化经一系列中间形态,最终被氧化成硫酸根,并伴有部分元素硫生成,符合硫代硫酸根氧化路径机理。
简介：Rare-earthcompoundsolidsuperacidSO42-/TiO2/La3+wasprepared.Itscatalyticactivitywasexaminedunderdifferentsyntheticconditionsfortheesterificationofpropanoicacidandn-butylalcoholasprobingreaction.Theoptimumconditionswerealsofound,whichwerethepH=8,thedepositingtimewas24h,themassfractionofLa(NO3)3usedinsolidsuperacidwas5%,theconcentrationofH2SO4was1.25mol/L,thesoakingtimeinH2SO4was16handthecalciningtemperaturewas500°C.TheethyloleatewassynthesizedfromoleicacidandethanolinthepresenceofSO42-/TiO2/La3+.Theoptimumreactionconditionswereobtainedwhichwerethereactiontimewas6h,molarratioofoleicacidtoethanolwas1:4andthemassfractionofcatalystwas4%.
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![Direct construction of <b style='color:red'>3</b>＇,<b style='color:red'>4</b>＇-dihydrospiro[pyrrol-3,<b style='color:red'>2</b>＇-oxindoles]through a cascade Michael/cyclization reaction of <b style='color:red'>3</b>-aminoindolin-<b style='color:red'>2</b>-ones with enones/enals](/image/thesis12 "Direct construction of <b style='color:red'>3</b>＇,<b style='color:red'>4</b>＇-dihydrospiro[pyrrol-3,<b style='color:red'>2</b>＇-oxindoles]through a cascade Michael/cyclization reaction of <b style='color:red'>3</b>-aminoindolin-<b style='color:red'>2</b>-ones with enones/enals")
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![CRYSTAL STRUCTURE OF DI - NITRATOBIS（ETHYLCAPROLACTAM）URANYL（Ⅱ） UO<b style='color:red'>2</b>[CH<b style='color:red'>2</b>（CH<b style='color:red'>2</b>）<b style='color:red'>4</b>CONC<b style='color:red'>2</b>H5]<b style='color:red'>2</b>（NO<b style='color:red'>3</b>）<b style='color:red'>2</b>](/image/thesis14 "CRYSTAL STRUCTURE OF DI - NITRATOBIS（ETHYLCAPROLACTAM）URANYL（Ⅱ） UO<b style='color:red'>2</b>[CH<b style='color:red'>2</b>（CH<b style='color:red'>2</b>）<b style='color:red'>4</b>CONC<b style='color:red'>2</b>H5]<b style='color:red'>2</b>（NO<b style='color:red'>3</b>）<b style='color:red'>2</b>")
