简介：Thispaperreportstwolanthanidecomplexesofformula（C9H7）Ln（C8H8）·（THF）2whereLnisProrNd,C9H7isindenyl,andC8H8iscyclooctatetraene（COT）.ThecomplexeswerepreparedbythereactionofLnCl3withK（C9H7）andK2（C8H8）inTHF.（C9H7）Pr（C8H8）·（THF）2crystallizesinTHFat-15℃inthemonoclinicspacegroupP21:withunitcelldimensionsa=8.446（0）,b=10.083（2）,c=13.407（3）,β=105.48（1）°,V=1100.43（35）3,Dc=1.52g/cm3andZ=2.ThefinalRvalueis0.033,Rwvalueis0.030,respectively.In（C9H7）Pr（C8H8）·（THF）2afive-memberedringcentroidofC9H7,theC8H8ringcentroidandthetwooxygenatomsfromthetwoTHFmoleculesformadistortedtetrahedralgeometryaroundthemetal.

简介：ThereactionofNdCl3withlithiummethylnaphthalenein1:2moleratioinTHFgeneratesblackpowder.Thepowderreactswithcyclooctatetraene（COT）inTHFtoformthetitlecomplex.[Li（THF）4Nd（C8H8）2]·2THFcrystallizesinthemonoclinicspacegroupP2/cwithunit-celldimensionsa=1.7858（7）nm,h=1.3243（4）nm,c=1.8086（6）nm.β=106.52（4）°,V=4.10nm3andDc=1.268g/cm3forZ=4.F（000）=1660,R=0.0774,Rn=0.0733.Thecomplexconsistsofdiscreteion-pairandtwoTHFmoleculesadduct.Intheanion,theneodymiumatomiscoordinatedbytwoCOTrings.ThestructureofthecationshowsthatthelithiumatomisattachedwithTHFmoleculesonly.

简介：Catalyticcombustionofpropane-airmixturewasinvestigated.Platinumcatalystsoveraflatstainlesssteelwithγ-aluminawashcoatwereemployed.Theemployedburnerhasthreecatalystssetparalleltothemixtureflow,spacedatanintervalof5,10and15mm.Bothexperimentandnumericalsimulationweremadeatinlettemperatureof553K,inletvelocityof3to7m/sandequivalenceratioof0.3to0.5.Inthenumericalsimulation,two-dimensional,steadystatemodelwasdevelopedtocalculatethetemperatureandspeciesconcentrationingas-phase.Inthismodel.chemicalreactiononthecatalystsurfaceandthatinthegasphasewereassumedtooccurinthree-steps.Thenumericalresultsshowgoodagreementwithexperimentalresults.Itwasfoundthatthepropertiesofthecatalyststronglyaffectthecatalystsurfacetemperature.Especially,thethermalconductivityofcatalysthasagreateffect,whiletheemissivityofcatalysthaslesseffect.

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简介：经济学家胡鞍钢说,强调8％的经济增长率是十分必要的,但容易形成为了8％而8％的局面。他认为,经济增长最重要的是带动就业增长。所以,如果今年能有效地把就业增长率提高到1.25％或1.5％,这将比实现8％的经济增长率更有意义。此外,人们更关注中国的经济增长能否有效地实现公平增长。

简介：有N-(2-propionic酸)的新奇金轧(III)建筑群-salicyloylhydrazone(C10H10N2O4，H3L)并且1,10-phenanthroline(C12H8N2，phen)被准备并且描绘。水晶结构[Gd(H2L)(HL)-(H2O)3]2潲楰湯捩???慳楬祣潬汹?票牤穡湯??ㄠ??桰湥湡桴潲楬敮???????楢慯瑣癩瑩？

简介：ACupro-8-thioquinolinecoordinationpolymer,[Cu^I(C9H6NS)]n,wassynthesizedbymethano-thermalreactionofCuCland8,8′-dithiodiquinoline(dtdq)inamolarratioof2:1at160℃for7d.X-Raysinglecrystalstructuredeterminationrevealedtheformationofaone-dimensionalstructurebelongingtomonocliniccrystalsystem,spacegroupP21/cwithcellparametersa=0.8043(1)nm,b=1.8949(3)nm,c=1.1048(1)nm,β=110.109(4)°,V=1.5810(4)nm^3andZ=4,Thecrystalwasfoundtobestableuptoapproximately300℃bythermalanalysisandhaveanenergygap(Eg)of2.0eVexhibitedbyUV-Vis-NIRreflectancespectrum.

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简介：分析了运8C机货舱大门总装与调试工序存在的问题及产生原因，介绍了实施改进措施后的效果。

简介：AlaminarpremixedPropane/Airflamewithafuelequivalenceratioof2.1wasemployedforanalysisofsootparticles.Zeroth-orderIognormaldistributions(ZOLD)wereusedintheanalysisofexperimentaldistributionphenomenaatdifferentresidencetimesduringsootformationintheflame.Rayleigh'stheoryandMie'sscatteringtheorywerecombinedwithagglomerateanalysisusingscatteringandextinctiondatatodeterminethefollowingsootcharacteristics:agglomerateparameters,volumetricfractions,massflowratesandsurfacegrowthrate.Sootdensitymeasurementswerecarriedouttodeterminedensityvariationsatdifferentstagesofgrowth.Themeasuredresultsshowthatmetricfractionandmassflowrateindicatethatthesurfacegrowthrateofsootparticlesexceedstheoxidationratesintheflamestudied.Thedataobtainedinthisworkwouldbeusedtostudysootoxidationrateunderflamingcondition.

简介：Tris)(η5-cyclopentadienyl-μ-carbonyl-iron)-μ3-nitrosylclusterwasobtainedfromthereactionofcyclopentadienyldicarbonylirondimerwithnitrogenmonoxideinxylene.Theclusterwascharacterizedbyelementalanalyses,IR,MSand1HNMR.Thecrystalstructureof[(η5-C5H5)(μ-CO)Fe]3(μ3-NO).C4H8OwasdeterminedbyX-raydiffractionanalysis.ItcrystallizesintheorthorhombicspacegroupPnma,a=9.053(2),6=10.545(2),c=22.525(4)A,V=2150.3(7)A3,Z=4,Dc=1.68g.cm-3;structuresolutionandrefinementbasedon1141reflectionswithI>3.0(I)(MoKa,A=0.71073A)convergedatR=0.0540.Theinfraredabsorptionbandat1325cm-1oftheμ3-NOinthecluster,whichisredshifted,showsthatμ3-NOisactivated.

简介：戴姆勒·克莱斯勒集团旗下的克莱斯勒300车系.自从推出以来就受到外界好评,当然.作为深深印刻着美国风格的车型.国内的知名度并不算高.仅有少量进口,但300系列在欧美的受欢迎,已经引得克莱斯勒产生乘胜追击的信心,推出300系列的性能加强版也就是顺理成章的事情.即300CSRT-8。

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简介：描述了用真实飞机机身段进行隔声试验的试验测试技术和测量方法，描述了用Y8C飞机机身段改装的试验段，以及为了保证试验结果可靠所采用的保证措施。同时，介绍了利用改装的Y8飞机机身段，对侧壁进行了不同状态的隔声试验，试验结果表明用飞机机身段来模拟飞机结构进行隔声试验，以及采取相对应的试验测试技术，会得到与真实飞机隔声相近的结果。

简介：问题副本,问题时,对于那些足以提出先导性学术问题的西方思想家来说

简介：ColdForcenturies,thebody’sbloodhasbeenmixedcloselywithemotions.Peoplewhoshownohumanemotionsorfeelings,forexample,aresaidtobecold-blooded.Cold-bloodedpeopleactincruelways.Theymaydobrutalthingstoothersandnotbyaccident,forexample,anewspapersaysthepolicearesearchingforacold-bloodedkiller.Thekillermurderedsome-onenotinselfdefenceorbecausehewasreactingtoangerorfear.Heseemedtokillfornoreason,andwithnoemotion,asiftakingsomeone’slifemeantnothing."Cold"canaffectotherpartsofthe

简介：1．在一根长木棍上有两种刻度线，第一种刻度线将木棍分成10等份，第二种刻度线将木棍分成优等份，如果沿每条刻度线将木棍锯断，木棍总共被锯成20段．求m的值．

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简介：GJ956130面层成型方法RS2019309[专,俄]//.—1994.9.15.—(1992.3.19);Int,Cl.B05D1/00该方法用于喷涂粘性或液体配合料,以提高面层的质量和工程效率。在罩面制品的面层上装有带孔构件,将喷涂用的混合料压入带孔构件的孔内,而后沿着面层移动带孔构件,完成喷涂作业。图4

简介：卢嘉锡名誉主席八十五华诞暨荣获何梁何利奖庆祝会在京举行（本刊讯）金秋十月,卢嘉锡名誉主席可谓双喜临门:１０月２１日,在１９９９年度何梁何利基金颁奖大会上,荣获奖金１００万港币的“科学与技术成就奖”;１０月２５日,由农工党中央主办的“卢嘉锡名誉主席八十五华诞暨荣获何梁何利奖庆祝会”在京举行。中央统战部常务副部长刘延东及有关部门负责人常荣军、陈征然、韦顺和,农工党中央副主席姚峻、章师明、宋金升、李蒙出席了会议。农工党中央副主席姚峻受蒋正华主席委托,向德高望重的卢老荣获何梁何利奖表示热烈的祝贺,向卢嘉锡主席八十五华诞表示由衷的祝愿,祝卢老健康长寿。（农工党中央信息教育处）福建省各届祝贺卢嘉锡名誉主席