简介:组G的Wielandt亚群,由w(G)表示了,是G的所有低于正常的亚群的normalizers的交叉。在这份报纸,作者为每整数i为最大的班G,为所有整数i的任何一个wi(G)=i(G)或wi(G)=i+1(G)的p组显示出那,并且为在有K1的G的每正常亚群K的w(G/K)=(G/K)。同时,为最大的班的常规p组的一个必要、足够的条件令人满意的w(G)=2(G)被给。最后,如果G是有基本z(G)的non-abelianp组,作者证明力量自守组PAut(G)是基本abelianp组?\mho1(G)\zeta(G)\cap\mho_1(G)。
简介:Theadsorptionprocessesofantibioticsofthetetracylinegroup(ATG)byseveralhome-madesulfocationitesarestudiedinthispaper.TheresultsshowthattheadsorptionmaybeofnonequivalentnormalityundercertainpHcondition.Theadsorptionmechanismisdiscussedwithinfraredspectrometry.ItcanbeconcludedthatATGcaninteractwithsulfocationitesbyionexchangemechanismorion-transfermechanismorbothofthem.
简介:Thispaperconsiderssingle-machineschedulingproblemsingrouptechnologywiththejobs'processingtimesbeingsimplelinearfunctionsoftheirstarttimes.Theobjectivefunctionsaretheminimizingofmakespanandtotalweightedcompletiontime.SomeoptimalconditionsandalgorithmsaregivenandthefactthattheproblemoftotalweightedcompletiontimesisNP-hardisproved.
简介:让是四元数海森堡组,并且让P是仿射的自守组。我们上经由P的单一的代表在四元数海森堡组上开发连续小浪变换的理论。光线的小浪的一个班被构造。反的小浪变换被使用光线的小浪简化。然后,我们上调查氡变换。一个Semyanistyi-Lizorkin空格被介绍,在哪个上氡变换是bijection。我们由欧几里德几何学的Fourier变换和组Fourier变换在两个上处理氡变换。这二个处理是实质上相等的。如果小浪是光滑的,我们也由使用小浪给一个倒置公式,它不要求功能的光滑。另外,我们获得上与亚拉普拉斯算符联系的氡变换的一个倒置公式。
简介:TheauthorsestablishsomeuniformestimatesforthedistancetohalfwaypointsofminimalgeodesicsintermsofthedistantcetoendpointsonsometypesofRiemannianmanifolds,andthenprovesometheoremsaboutthefinitegenerationoffundamentalgroupofRiemannianmanifoldwithnonnegativeRiccicurvature,whichsupportthefamousMilnorconjecture.
简介:LetAbeaunitalC*-algebra,n∈N∪{∞}.Itisprovedthattheisomorphism△n:Un0(A)/DUn0(A)→AffT(A)/△n0(π1(Un0(A)))isisometricforsomesuitabledistances.Asanapplication,theauthorhasthesplitexactsequence0→AffT(A)/△n0(π1(Un0(A)))iA→Un(A)/DUn(A)πA→Un(A)/Un0(A)→0withiAcontractive(andisometricifn=∞)undercertainconditionofA.
简介:Inthispaper,wegivetheholomorphicautomorphismgroupofthehigher-dimensionalgeneralizationofThullendomain.
简介:Thetitlepolymerwaspreparedfrom5-diethylamino-3-thia-pentylglycidyletheranddiethyleneglycolbisglycidyletherviaring-openingcopolymerization.Itwasfoundthatthisreactioncouldbecatalyzedbysodium,butnotLewisacid.Theobtainedpolymercancoordinatewithplatinumcompound,andtheplatinumcomplexisanewkindofcatalystforthehydrosilylationofolefinswithtriethoxysilane.
简介:DigitaldecayspectroscopyofactinideisotopesatthegasfilledseparatorSHANSAlloverthechartofnuclides,theregiontothe“north-east”of208Pb,withZ≥84andN=128~130,hoststheshortest-livedαradioactivities,withhalf-livesintherangeofnanosecondstomicroseconds.Synthesisanddetectionofneutron-deficientisotopesabovethoriuminthisregionarechallengingduetotheirlowproductioncrosssectionsandshorthalf-lives.
简介:Thispaperreportsthekineticsofgrouptransferpolymerization(GTP)ofethylacrylate(EA)withzinciodidecatalystin1,2-dichloroethaneusingdimethylketenemethyltrimethylsilylacetal(MTS)asinitiatorat0℃andabove0℃.Theamountofcatalystusedwasstudied.Whenzinciodidecatalystusedismorethan10mol%relativetomonomer,therateofpolymerizationisproportionaltotheconcentrationofmonomer,whereaszinciodidecatalystusedislessthan10mol%ofthemonomer,therateofpolymerizationisindependentofthemonomerconcentration.IntheGTPofEAaninductionperiodwasobservedwhenthezinciodidecontentsarelessthanl0mol%.Ifthereactiontemperatureisover0℃,livingspeciesbecomeunstableanddiminish,leadingtoincompletemonomerconversion.Thereactioncurvesequationsareobtained.Thepolymershavenarrowmolecularweightdistributionswhicharenotchangedasdecreasingzinciodidecontents.Thepolydispersityisabout1.2.
简介:Interestinthenonlinearpropertiesofmulti-modeopticalwaveguideshasseenarecentresurgenceonaccountofthelargedimensionalityaffordedbytheplatform.Thelargevolumeofmodesinthesewaveguidesprovidesanewspatialdegreeoffreedomforphasematchingnonlinearopticalprocesses.However,thisspatialdimensionisquantized,whichnarrowstheconversionbandwidthsofintermodalprocessesandconstrainsspectralandtemporaltailoringofthelight.Hereweshowthatbyengineeringtherelativegroupvelocitywithinthespatialdimension,wecantailorthephase-matchingbandwidthofintermodalparametricnonlinearities.Wedemonstrategroup-velocity-tailoredparametricnonlinearmixingbetweenhigher-ordermodesinamulti-modefiberwithgainbandwidthsthataremorethananorderofmagnitudelargerthanthatpreviouslythoughtpossibleforintermodalfour-wavemixing.Asevidenceofthetechnologicalutilityofthismethodology,weseedthisprocesstogeneratethefirsthigh-peak-powerwavelength-tunableall-fiberquasi-CWlaserintheTi:sapphirewavelengthregime.Moregenerally,withthecombinationofintermodalinteractions,whichdramaticallyexpandthephase-matchingdegreesoffreedomfornonlinearoptics,andintermodalgroup-velocityengineering,whichenablestailoringofthebandwidthofsuchinteractions,weshowcaseaplatformfornonlinearopticsthatcanbebroadbandwhilebeingwavelengthagnostic.
简介:TheNb-bromomethylderivative(2)ofgelsemine,aquaternaryammoniumsalt,wasfoundtoberecalcitranttowardHofmanntypealkalinedegradationwhichhasbeensuccessfulinothercases.Instead,are-distributionoftheN-methylgrouptookplace,givingriseto3a,1,3band3c,indescendingorderofRfvalues.
简介:Thescientificprogramofthegroupcoversbigbangnucleosynthesis,hydrostaticburninginstarsandexplosivenucleosynthesisinsupernova.Byconsideringnon-equilibriumstatistics,wesuggestapossiblewaytosolvetheLiprobleminbigbangnucleosynthesis.The13C(α,n)16Oisthemajorneutronsourceforthes-processhappeninginAGBstars.The19F(p,α)16Oisrelevanttotheproductionoffluorine.WearedevelopingexperimentalplatformstostudytheimportantreactionforthefirsttimedirectlyattheirstellarenergiesinJinpingUndergroundLaboratory.The59Festellardecayrateisimportantfortheproductionof60Fe,animportantisotopewhosegammarayhasbeenobservedbysatellites.WedetermineitsstellardecayrateforthefirsttimeusingexperimentalB(GT)strength.Thenewratereducesthediscrepancyofthe60Feyieldsbetweenthemodelpredictionsandtheobservations.Theundergroundexperimentisexpectedtobeginin2018.