简介：

简介：Amain-chainliquidcrystallineionomer(MLCI)containingsulfonicgroupwassynthesizedbyaninterfacialcondensationreaction.TheMLCIwasblendedwithpolybutyleneterephthalate(PBT)andpolypropylene(PP).MLCIinteractedwithboththedispersed(PP)phaseandthematrix(PBT)phasetomodifytheinterfacialinteractionofPBTandPP.Differentialscanningcalorimetry(DSC),scanningelectronmicroscopy(SEM)andFTIRimagingsystemanalysisdemonstratedthesignificanceofinterfacialinteractioninthepolymerblends.MLCIbroughtaboutgoodadhesionattheinterfacial,whichreducedthedispersephasesizeandenabledafinePPphaseatmatrix.ThemechanicalpropertiesoftheternaryblendswereimprovedwhenaproperamountofMLCIwasadded.Thiswasattributedtoenhancedadhesionattheinterface,whichinvokedbettermechanicalpropertiesintheblends.

简介：Condensationofmethyl7-methylcoumarin-4-acetate(2)withprimaryaminesandwithan-thranilicacidgave7-methyl-2-oxo-N-aryl-2H-[1]-benzopyran-4--acetamide(4a—d)and(7),respectively.Compound7underwentcyclizationtogive2-(7-methyl-2-oxo-2H-[1]-benzopyran-4-yl)-methyl-4H-3,1-benzoxazin-4-one(3).Thereactionof3witharomaticaminesgavethecorrespondingquinazolonederivatives5whichtautomerisestothethermodynamicallymorestableisomer6,whereasitsreactionwithGrignardreagentsandaromaticaldehydesgave8a,8b,and9a,9b,respectively.

简介：Threenewpolysesquisiloxane-boundplatinumcomplexesweresynthesizedviahydrolysisofN,N-di(β-ethylmercaptoethyl)γ-(triethoxysilyl)propylamineorcohydrolysisofthemonomerwithdodecyltriethoxysilaneorwithphenylpropylthiethoxysilaneandimmobilixationonfumedsilica,followedbyreactingwithpotassiumplatiniteinacetoneunderargonatmosphere.Theplatinumcomplexesexhibitedhighcatalyticactivityforthehydrosilylationofolefinsbytriethoxysilane.Theeffectsoftemperatureandtheamountofcomplexonthecatalyticactivity,aswellastherecoveryandreusabilityofthecatalystswereinvestigated.

简介：通过吝啬地的近似，Gaussian近似，不安扩大，和一个3理论的地理论上的重正常化组分析的详细研究，我们证明不稳定性修理了理论的点，和他们的联系不稳定性代表，与可伸缩和一阶的阶段转变在一个地驱动的分级的4模型展出的普遍性行为相当可能相关，在它的批评温度和近的th下面放大并且领先修正到可伸缩的Finitetime被考虑。我们也证明一阶的阶段转变的不稳定性代表Yang庇护边奇特等价于那些，并且采用后者改进我们前者的估计。结果与存在数字结果同意很好。

简介：Theinteractionsofoxidativeradicals(Br2,HOetc.)withN-phosphoryldipeptidederivatives(NDM-TrpOMeandNDT-MetOMe)havebeeninvestigatedbyusingpulseradiolysisatdifferentpHvalues.IthasbeenfoundthatBr2andHOradicalsoxidizetheMet-siteandTrp-siteinthedipeptidederivativesviaformationofthethree-electron-bondedintermediateandindolylradicalsimultaneously.Thentheintramolecularelectrontransferalongthepeptidebackboneoccurs.Therateconstantsofelectrontransfer,k,havebeendeterminedandthereactionmechanismhasbeendeduced.

简介：Difluorocarbenegeneratedfromthedecompositionoffluorosulfonyldifluoroaceticacid(2)reactedwithvarioussodiumsaltsofN-heterocycliccompounds(1)givingthecorrespondingdifluoro-methylatedproductsinacetonitrileat10—40℃.Benzotriazole(1a),benzimidazole(1b)andimidazole(1c)wereconvertedinto1-(difluoromethyl)benzotriazole(3a),1-(difluoromethyl)benzimidazole(3b)and1-(difluoromethyl)imidazole(3c)respectively.Indole(1d)reactedwith2togive-(fluorosulfonyldifluoro-acetate)indole(2d)ratherthantheexpecteddifluoromethylatedderivatives.

简介：

简介：N-nitrosaminesarestrongcarcinogensforhumans.Thispapergivesanoverviewofthenitrosmainesincigarettesmokeincludingtheformation,theharmfulness,theanalyticalmethodsofthenitrosmainesandtheadsorptionsanddegradationsofN-nitrosamines.

简介：Inthispaper,therigiditytheoremsofthesubmanifoldsinS^n+pwithparallelMoebiusformandconstantMObiusscalarcurvaturearegiven.

简介：Aroutingtreeforasetoftasksisadecisiontreewhichassignsthetaskstotheirdestinationsaccordingtothefeaturesofthetasks.Aweightedroutingtreeisonewithcostsattachedtoeachlinkofthetree.Linksofthesamefeaturehavethesamecost.Itisprovedthattheproblemoffinding?routingtreeoftheminimumcostforagivensetoftasksoftwofeaturesisNP-complete.

简介：１－１７　Ｖｉｂｒａｔｉｏｎａｌ　Ｐｒｏｐｅｒｔｉｅｓ　ｏｆ　Ｎａ_ｎ１－１７ＶｉｂｒａｔｉｏｎａｌＰｒｏｐｅｒｔｉｅｓｏｆＮａ_ｎ￥ＺｈａｎｇＦｅｎｇｓｌｌｏｕ；Ｅ．ＳｕｒａｕｄｌａｎｄＲ．ＧｌｏｗｉｎｓｋｉＺＩｔｉｓｋｎｏｗｎｔｈａｔｓｍａｌｌｓｏ...

简介：对N阶电阻网络等效电阻进行了研究,应用虚拟电流法给出了这类问题的两个普适规律,并将所得结果与其它相关结果进行了比较

简介：Bythereactionofpoly(bromoacetylstyrene)(EBPS)withthiaurea(TU),akindofnovelchelatingresinwithheterocyaclicringofsulfurandnitrogen,poly[4-(2-amino)thiazoleyl-4-vinylben=ene],wassynthesized.ItsstructurewascharacterizedbyFTIRandelementalanalysis.Thefactorswhichhaveinfluenceonthereactionsuchasreactiontime,solvents,andmolarratioofreactantswereinvestigated.

简介：AnewchemilurninescencelabelN-(β-carboxypropionyl)luminol(CPL)wasusedtolabelsheepanti-humanIgG(SaHIgG).Thelabeledantibodywasstableandcouldbedetectedatleastdownto10-17~10-16mol.Themolarincorporationratiowasestimatedtobe0.26molofCPLpermolofSaHIgG.TherewerenoapparentchangesintheimmunoreactivityofthelabeledSaHIgGandinthequantumefficiencyoftheCPLafterlabeling.

简介：这篇文章处理考尔德的固定性质?慦桳潩吗？

简介：

简介：

简介：

简介：Theβ-carboxylicgroupplaysanimportantroleinthepeptideformation,esterificationandtheesterexchangeatthephosphorylgroupofN-phosphorylatedasparticacid.