简介：［1］C.H.Evans,BiochemistryofLanthanide,PlenumPress,NewYork,1990,391.［2］J.R.Duffield,F.Marsicano,D.R.Williams,Polyhedron,1991,10,1105.［3］G.E.Jackson,S.Wynchank,M.Woudenberg,Magn.Reson.Med.1990,16,57.［4］L.M.Webb,D.M.Taylor,D.R.Williams,J.AlloysandCompounds,1998,271-273,112.［5］P.M.May,P.W.Linder,J.C.S.Dalton,1977,588.［6］T.D.Luckey,B.Venugopal,D.Huntcheson,HeavyMetalToxicitySafetyandHormology,AcademicPress,NewYork,1975,27.［7］W.R.Harris,B.S.Yang,S.Abdollahi,Y.Hamada,J.Inorg.Biochem.,1999,76,231.［8］Y.Wang,Thesis,ChangchunInstituteofAppliedChemistry,AcademiaSinica,2000.［9］J.F.Han,Thesis,ChangchunInstituteofAppliedChemistry,AcademiaSinica,1999.［10］Y.M.Liu,Thesis,ChangchunInstituteofAppliedChemistry,AcademiaSinica,1997.［11］L.Meng,L.Ding,H.T.Chen,D.Q.Zhao,J.Z.Ni,ChemicalJ.ofChineseUniversities(inChinese),1999,20,5.

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简介：David,JourneandSemmesprovedtheTbtheoremforpara-accreclivefunclionsandshowedthistheo-remisoptimalincertainsense.Inthisnote,wegiveatechnicalproofofTbtheoremforpseado-accretivefunctions.Ourresultstillholdsforpara-accretingfunctions.

简介：用非线性分析的方法讨论了方程N（t）=N（t）[a（t）-∑ni=1bi(t)Ni(t-τi（t）)]的周期正解的存在性，所获结果包含或推广了已有的几上结论[2，3]。

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简介：研究了T形树T(l1,l2,l3)(I≤l1≤l2≤l3)的匹配唯一性问题，并证明在一定条件下，T(l1,l2,l3)是匹配唯一的．

简介：本文用临界点理论中的能量最小原理得到了一类具（q（t），P（t））-Laplacian项的二阶非自治系统存在周期解的充分条件．

简介：Inindirectdrive,reducingpeakintensityofasinglebeamandcontrollingoverlapofmulti-beamsaretwooppositerequirementsforlaserfocalspotdesign.Inthispaper,animprovedlaserspotdesigntechniqueforindirectdrivebuiltuponthegeometricstructuresoflaserpropagationintohohlraumhasbeenintroduced.Theproposedtechniqueisabletogenerateappropriatecontinuousphaseplate(CPP)producingaspecialshapedspotthatcanbalancetheoppositerequirements.ThecorrespondingCPPdoesnotbringdifficultiestothedesignandfabrication.Phaseaberrationsaremoresensitivetothespecialshapedspot;however,itcanbetolerableforthecurrentbeamcontrollevel.

简介：利用C-O键上C原子电荷Qc和分子所含C原子个数Ⅳ作为醇分子结构描述符对其沸点巩、在水中的溶解度Sw及辛醇／水分配系数（k）进行了QSPR研究．Qc的计算采用Chemoffice8．0中的MOPAC-AM1量子化学法，容易获取，它表征了醇分子同分异构体之间的结构差异．多元回归分析结果表明醇分子的Tb，-lgSw,lgKow都随分子所含C原子数Ⅳ的增加而增加，随着C-O键上C原子电荷Qc的增大而减小，复相关系数均在0．99以上．MOPAC-AM1方法计算的量化参数Qc用于与脂肪醇的水溶解性关联优于分子连接性指数．

简介：讨论了方程ｘ（ｔ）＝－ｘ＾３（ｔ－１）－ｘ＾３（ｔ－２）周期解的结构。

简介：设P（G，λ）是图的色多项式。如果对任意使P（G，λ）=P（H，λ）的图H都与G同构．则称图G是色唯一图．这里通过比较t＋1色类的色划分数目，讨论了由Koh和Teo在文献[1]中提出的问题（若│ni-nj│≤2．当min（n1，n2，…,nt）充分大时，完全t部图K（n1，n2，…，nt）是否是色唯一图？）。改进了文献[5]中的结果。证明了若∑1≤i≤tai^2=T．min{n＋a1,n＋a2，…．nt＋at,n-1}≥（T＋1）／2，则K（n＋a1．n＋a2，…．n＋a，）是色唯一图（其中ai是实数，n＋ai是正整数）。从而证明了若│ni-nj│≤k（i．j=1，2．…，t）．min{n1．n2，…,nt}≥tk^2／8＋1．则K（n1，n2，…nt）是色唯一图。

简介：Ｅｘｃｉｔａｔｉｏｎ　Ｆｕｎｃｔｉｏｎ　ｏｆ　Ｆｉｓｓｉｏｎ　ａｎｄ　Ｔｒａｎｓｆｅｒ　Ｒｅａｃｔｉｏｎ　ｉｎ　Ｂｏｍｂａｒｄｍｅｎｔ　ｏｆ　４０Ａｒ　ｏｎ　１５９Ｔｂ　ＮｕｃｌｅｉＥｘｃｉｔａｔｉｏｎＦｕｎｃｔｉｏｎｏｆＦｉｓｓｉｏｎａｎ...

简介：让T是倾斜模块的Wakamatsu。模块M被叫(n，T)-copureinjective(分别地(n，T)-copure公寓)如果T1(N，M)=0(分别地1T(N，M)=0)为有T-injective尺寸的任何模块N至多n(看见定义2.2)。在这份报纸，M是，这被显示出(n，T)-copureinjective如果并且仅当M是核一我n(T)-precoverf：有刺T的B。另外，刺T朔望上的一些结果被介绍。例如，第n戳每个模块的T朔望，这被显示出，由T产生了，(n，T)-copureinjective。

简介：AgraphGiscalledchromatic-choosableifitschoicenumberisequaltoitschromaticnumber,namelych(G)=χ(G).Ohba’sconjecturestatesthateverygraphGwith2χ(G)+1orfewerverticesischromaticchoosable.ItisclearthatOhba’sconjectureistrueifandonlyifitistrueforcompletemultipartitegraphs.Recently,Kostochka,StiebitzandWoodallshowedthatOhba’sconjectureholdsforcompletemultipartitegraphswithpartitesizeatmostfive.Butthecompletemultipartitegraphswithnorestrictionontheirpartitesize,forwhichOhba’sconjecturehasbeenverifiedarenothingmorethanthegraphsKt+3,2*(k-t-1),1*tbyEnotomoetal.,andKt+2,3,2*(k-t-2),1*tfort≤4byShenetal..Inthispaper,usingtheconceptoff-choosable(orL0-size-choosable)ofgraphs,weshowthatOhba’sconjectureisalsotrueforthegraphsKt+2,3,2*(k-t-2),1*twhent≥5.Thus,Ohba’sconjectureistrueforgraphsKt+2,3,2*(k-t-2),1*tforallintegerst≥1.

简介：Thegreenlong-after-glowluminescencefromTb3+-dopedSr2SiO4phosphors,whicharesynthesizedbythehightemperaturesolidstatereactioninareductiveatmosphere,isobservedinthispaper.Theresultsshowthatunderultravioletexcitation,theobtainedphosphorsproduceanintensegreen-lighting-emissionfromtheTb3+,andthegreen-lightinglongafter-glowluminescencerelatedtoTb3+canlasthalfanhouraftertheirradiationsourcehasbeenremoved.Moreover,theeffectsofco-dopingLi+,Dy3+,Er3+,Gd3+,andYb3+withTb3+onthedecaypropertiesandthermoluminescencepropertiesareinvestigatedtoconfirmthelong-after-glowmechanism.

简介：ＰｒｏｊｅｃｔｉｌｅＦｒａｇｍｅｎｔａｔｉｏｎｏｆ３０ＭｅＶ／ｕ４０ＡｒｏｎＴａｒｇｅｔｓｏｆ１５９ＴｂａｎｄｎａｔＡｇ￥ＤａｉＧｕａｎｇｘｉ；ＦｕＹａｎｇｂｉａｏ；ＨｅＺｈｉｙｏｎｇ；ＤｕａｎＬｉｍｉｎ；ＬｉＺｕｙｕ；ＺｈａｎｇＢａ?..

简介：<正>Foranoddfunctionf(x)definedonlyonafiniteinterval,thispaperdealswiththeexistenceofperiodicsolutionsandthenumberofsimpleperiodicsolutionsofthedifferentialdelayequation(DDE)(?)(t)=-f(x(t-1)).Byuseofthemethodofqualitativeanalysiscombinedwiththeconstructingofspecialsolutionsaseriesofinterestingresultsareobtainedontheseproblems.

简介：Inthiswork,webrieflydiscussanovelclassofmodifiedgravitylikef(T,TG)gravity.Inthisbackground,weassumethenewagegraphicversionofpilgrimdarkenergyandreconstructf(T,TG)modelsfortwospecificvaluesofs.Wealsodiscusstheequationofstateparameter,squaredspeedofsoundandwDE-wDEplaneforthesereconstructedf(T,TG)models.Theequationofstateparameterprovidesphantom-likebehavioroftheuniverse.ThewDE-wDEplanealsocorrespondstoΛCDMlimit,thawingandfreezingregionsforbothmodels.

简介：Theoneplusone(1+1)modeofhydrosilationreactionofladderlikecis-isotaticpolyallylsilsesquioxane(AllyI-T)andpolyhydrosilsesquioxane(H-T)usingdicyclopentadienylplatinumdichloride(Cp2PtCl2)asthecatalystleadstotheformationofanewpolyorganosiloxane(POS).ThepresenceofnanoscaletubularstructureintheproductPOSwaspreliminarilyprovedbyIR,1H-NMR,differentialscanningcalorimetry(DSC),X-raydiffraction(XRD),gelpermeationchromatography(GPC),atomicforcemicroscopy(AFM)andmolecularsimulation.