简介：采用铜（Ⅱ）盐和3,5-二氯水杨醛缩丝氨酸以及4,4′-联吡啶在乙醇水溶液中合成了具有二维层状的配位聚合物.通过元素分析、红外光谱对该配位聚合物进行了表征,并利用X射线单晶衍射仪对其结构进行了鉴定.晶体结构表明,该标题配合物属三斜方晶系,空间群C2/c,晶胞参数为a=2.711（3）nm,b=2.711（3）nm,c=4.977（5）nm;α=90.00°,β=90.00°,γ=120.00°,V=3.1678nm^3,Z=18,Dc=1.173g·cm^-3,F（000）=11448,μ=0.807mm-1,R1=0.0788,wR2=0.1872.
简介：对化合物[Na_2（H_2O）_（10）][Cu_4（H_2O）_（12）（H_2W_（12）O_（42））]·15H_2O（简称Na_2Cu_4W_（12））进行了体外抗肿瘤活性研究.应用四甲基偶氮唑盐（3-[4,5-dimethylthiazo-2-y]-2,5-diphenyltetrazoliumbromide,MTT）比色法分析Na_2Cu_4W_（12）对人肝癌细胞（HepG2）、人神经母细胞瘤细胞（SHY5Y）增殖抑制活性.采用光学显微镜观察肿瘤细胞的凋亡形态变化,用流式细胞术分析细胞周期和细胞凋亡,计算各期细胞比例及细胞凋亡率.结果表明,Na_2Cu_4W_（12）对HepG2和SHY5Y2种肿瘤细胞增殖半数抑制浓度IC_（50）值分别为5.3和10.2μmol·L~（-1）,且呈剂量依赖性.光学显微镜下处理组细胞出现皱缩、变圆、缩小等形态变化,不同浓度Na_2Cu_4W_（12）处理12h早期凋亡细胞所占的百分比显著增加且呈剂量依赖性.综上所述,Na_2Cu_4W_（12）能够抑制胞瘤细胞增殖,诱导细胞凋亡.
简介：Halfsandwichirondicarbonylcomplex[η5-C5H3(t-Bu)2]Fe(CO)2Cl(1)reactswith1,2-dilithiumdiselenocarboraneLi2Se2C2B10H10(2)togiveabinuclearironcarboranecomplex[η5-C5H3(t-Bu)2]2Fe2(CO)3*Se2C2B10H10(3).TheX-raydiffractionanalysisofcomplex3revealsthatoneoftheironatomsischiral.
简介：Ionothermalsynthesiswasusedtoprepareanovelaminoacidcontaininghybridzincophosphatemonomer,[Zn(HPO4)(H2PO4)][C6H10N3O2](denotedasZnPO-CJ58).Theinorganicframeworkof[Zn(HPO4)(H2PO4)]·[C6H10N3O2]consistsof4-memberedringsformedbyZnO3OHisandPO2(OH)2tetrahedra.TheHPO4andaminoacidmoietieshangontheZncenter.Suchaframeworkisstabilizedbyextensivemultipointhydrogenbondsinvolvingthephosphateunitsandhistidinemoleculestoformapseudo-3Dsupramolecularstructure.ItisnoteworthythatZnPO-CJ58isthefirstzincphosphateclusterwithaminoacidactingastheligand.Itexhibitsphotoluminescenceexcitedatawavelengthof220nm.Interestingly,ZnPO-CJ58cantransformintoalayeredstructure(C6H10N3O2)Zn2·(HPO4)(PO4)·H2O(ZnPO-CJ36)throughfurtherreactingwithwaterorzincacetatedihydrateinwaterat85℃for1h.Thisworkwillbehelpfulforthesynthesisofcrystallineinorganic-organichybridmaterialswithbiofunctionalmolecules.
简介：一、判断题（每小题１分，共１０分）１．整数和分数统称有理数．（ ）２．设甲数为ｘ，若乙数比甲数的一半小２，则乙数是１２（ｘ－２）．（ ）３．若ａ、ｂ互为相反数，则１３（ａ－ｂ）＝０．（ ）４．若ａ＞０，ｂ＜０，则１ａ＞１ｂ．（ ）５．没有最大的负数．（ ）６．两个有理数的差一定小于被减数．（ ）７．任何有理数都有倒数．（ ）８．两个有理数的和与积都是正数，则这两个数必都是正数．（ ）９．如果（－ｘ）２＝９，那么ｘ＝３．（ ）１０．一个数的平方一定是正数．（ ）二、填空题（每小题２分，共２０分）１．－３５的相反数是，－２３的倒数是．２．ｘ的平方与ｙ的倒数的和表示为．３．绝对值是５的数是，平方得２
简介：A(k;g)-graphisak-regulargraphwithgirthg.A(k;g)-cageisa(k;g)-graphwiththeleastpossiblenumberofvertices.Letf(k;g)denotethenumberofverticesina(k;g)-cage.Thegirthpairofagraphgivesthelengthofashortestoddandashortestevencycle.Afc-regulargraphwithgirthpair(g,h)iscalleda(k;g,h)-graph.A(k;g,h)-cageisa(k;g,h)-graphwiththeleastpossiblenumberofvertices.Letf(k;g,h)denotethenumberofverticesina(k;g,h)-cage.Inthispaper,weprovethefollowingstrictinequalityf(k;h-1,h)
简介：LetZbeatopologicalspaceandmappingA2:Z→B(H)withclosedrangeR(A2)becontinuous.SomenecessaryandsufficientconditionsofthecontinuityofM-PinversesAz+aregivenin[1],[2].ItisoneofthemthatAZ+iscontinuousifanaonlyifAZ+islocallybounded.Inthispaper,wediscussthefollowingproblem:iflimAn=A0inB(H)and||An+||isunbounded(i.e.theabovenecessaryandsufficientconditionfails),whathinHwillmaketheequations:limAm+h=A0+horw-limAn+h=A0+hbetrue.Forthispurposethreetheoremsandanerrorestimationaregiveninthispaper.
简介：ＳＹＮＴＨＥＳＩＳＯＦ３－ＡＲＹＬ－１（２Ｈ，４Ｈ）ＡＣＲＩＤＯＮＥＳＡＮＤＴＨＥＩＲＤＥＲＩＶＡＴＩＶＥＳ￥ＲｏｎｇＹＩＮ；ＧｕａｎｇＦａｎＨＡＮ；ＹｕＴｉａｎＬＩ（ＤｅｐａｒｔｍｅｎｔｏｆＭｅｄｉｃａｌＬａｂｏｒａｔｏｒｙ，ＪｉｌｉｎＭｅｄｉｅａ...
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![Crystal Structure and Bioactivity of Complex [Gd（C<b style='color:red'>10</b><b style='color:red'>H</b>9N2O4）（C<b style='color:red'>10</b><b style='color:red'>H</b>8N2O4）（<b style='color:red'>H</b>2O）3]2·phen·4<b style='color:red'>H</b>2O](/image/thesis3 "Crystal Structure and Bioactivity of Complex [Gd（C<b style='color:red'>10</b><b style='color:red'>H</b>9N2O4）（C<b style='color:red'>10</b><b style='color:red'>H</b>8N2O4）（<b style='color:red'>H</b>2O）3]2·phen·4<b style='color:red'>H</b>2O")
![<b style='color:red'>一</b>个新的二维配位聚合物：{Cu2[C<b style='color:red'>10</b><b style='color:red'>H</b>8Cl2NO4]2[C<b style='color:red'>10</b><b style='color:red'>H</b>8N2]3}n的合成及其晶体结构](/image/thesis4 "<b style='color:red'>一</b>个新的二维配位聚合物：{Cu2[C<b style='color:red'>10</b><b style='color:red'>H</b>8Cl2NO4]2[C<b style='color:red'>10</b><b style='color:red'>H</b>8N2]3}n的合成及其晶体结构")
![新型仲钨酸盐-B化合物[Na_2（<b style='color:red'>H</b>_2O）_（<b style='color:red'>10</b>）][Cu_4（<b style='color:red'>H</b>_2O）_（12）（<b style='color:red'>H</b>_2W_（12）O_（42））]·15<b style='color:red'>H</b>_2O体外抗肿瘤活性研究](/image/thesis6 "新型仲钨酸盐-B化合物[Na_2（<b style='color:red'>H</b>_2O）_（<b style='color:red'>10</b>）][Cu_4（<b style='color:red'>H</b>_2O）_（12）（<b style='color:red'>H</b>_2W_（12）O_（42））]·15<b style='color:red'>H</b>_2O体外抗肿瘤活性研究")
![Synthesis, Structure and Characterization of a Novel Asymmetrical Half-sandwich Binuclear Iron Carborane Complex [η5-C5<b style='color:red'>H</b>3(t-Bu)2]2Fe2(CO)3Se2C2B<b style='color:red'>10</b><b style='color:red'>H</b><b style='color:red'>10</b>](/image/thesis10 "Synthesis, Structure and Characterization of a Novel Asymmetrical Half-sandwich Binuclear Iron Carborane Complex [η5-C5<b style='color:red'>H</b>3(t-Bu)2]2Fe2(CO)3Se2C2B<b style='color:red'>10</b><b style='color:red'>H</b><b style='color:red'>10</b>")
![Ionothermal Synthesis and Phase Transformation of Organic-inorganic Hybrid Neutral Zincophosphate Cluster [Zn（HPO4）（<b style='color:red'>H</b>2PO4）][C6<b style='color:red'>H</b>（<b style='color:red'>10</b>）N3O2]](/image/thesis13 "Ionothermal Synthesis and Phase Transformation of Organic-inorganic Hybrid Neutral Zincophosphate Cluster [Zn（HPO4）（<b style='color:red'>H</b>2PO4）][C6<b style='color:red'>H</b>（<b style='color:red'>10</b>）N3O2]")
