简介：AnexampleofcompletsRiemannianmetricofpositive(ornonnagative)curvatureonR^nsuchasds^2=a(x)dx^2isobtainedbydirectcaculations.Furthermore,byusingageodesicconvexconditionandatheoremforcompletenoncompactRiemannianmanifold,anexistenceresultofperiodicsulutionofprescribedenergyforasingularHamiltoniansystemisalsoobtained.

简介：Thisarticleprovestheexistenceofsingulardirectionsofvaluedistributiontheoryforsometranscendentalholomorphiccurvesinthen-dimensionalcomplexprojectivespacePn(C).Anexampleisgiventocomplementtheseresults.

简介：ForsomeclassesofperiodicfunctionswithboundaryconditionsthestrongasymptoticsoftheKolmogorov’s,theGelfand’s,andlinearN-widthsareobtained.

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简介：AschemeforcontrolledteleportationofanunknownN-qubitentangledGHZstatefromthesenderAlicetothedistantreceiverBobisproposed.Andm-qubitGHZstateissufficientforthetaskofcontrolbymspatially-separatedsupervisors.Conditionedonthelocaloperationsexecutedbyallparticipants,Bobcanfaithfullyrestoretheoriginalstatebyperformingrelevantunitarytransformationswiththeaidofsomeclassicalmessageaboutmeasurementresults.Anyone'sabsencewillabsolutelyleadtothefailureofteleportation.

简介：点连通度是衡量互联网络容错性的一个重要参数.尽管点连通度能正确地反映了系统的容错性能,但是不能正确反映大规模网络的健壮性能.条件连通度通过对各分支附加一些要求(当整个网络被破坏时)来克服这个缺点.给定一个基于图G的网络和一个正整数l,G的R~l-连通度,记为k~l(G),定义为图G的最小节点子集的节点数,使其去掉后,G是不连通的,且每个分支的最小度至少是l.在本文中,我们得到了(n,k)-排列图的条件连通度k~l(A(_n,k))=[(l+1)k-l](n-k)-l,其中k≥l+2,n≥k+l.更多还原

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简介：在N-解析函数类中，对于无穷直线上的Riemann-Hilbert边值问题，通过轴的对称扩张法将其转化为在附加条件下相应的Riemann边值问题，从而建立了其齐次和非齐次问题的可解性理论。

简介：Inthepresentwork,theLEDchipwasirradiatedbyusing59.6MeVNionsinaterminalchamberoftheSector-focusedcyclotron(SFC)intheNationalLabortaryofHeavy-ionAcceleratorsinLanzhou.The63MeVNionspenetratedthroughagoldfoilandscatteredinalargearea.Theenergyofionwasreducedto59.6MeVafterscatteringofthegoldfoil.TheLEDwasprovidedbytheSemiconductorLightingCenterinInstituteofSemiconductorinBeijing.TheluminencesoftheLEDbefore/afterirradiationweretestedthroughaintegratingsphereinSemiconductorLightingCenterinInstituteofSemiconductorinBeijing.Theluminancewastestedunderacurrentof350mA.Fig.1showstherelationshipbetweentheluminencesandtheirradiationfluences.Theirradiationledto

简介：Ｎｉ／Ｍｏ２ＮａｓａＨｉｇｈｌｙＡｃｔｉｖｅＨｙｄｒｏｄｅｎｉｔｒｏｇｅｎａｔｉｏｎＣａｔａｌｙｓｔＮｉ／Ｍｏ２ＮａｓａＨｉｇｈｌｙＡｃｔｉｖｅＨｙｄｒｏｄｅｎｉｔｒｏｇｅｎａｔｉｏｎＣａｔａｌｙｓｔ￥ＷｅｎＹｕＺＨＡＮＧ；ＸｉｎＰｉｎｇＷＡＮＧ；...

简介：Moleculardynamics(MD)simulationswereperformedtostretchtherectangulargraphenesheetsdopedwithsilicon,nitrogenorboronatoms.Young’smodulus,ultimatestress(strain)andenergyabsorptionweremeasuredforthegraphenesheetswiththedopingconcentration(DC)rangingfrom0to5%.Theemphasiswasplacedonthedistincteffectsofeachindividualdopantonthefundamentalmechanicalpropertiesofgraphene.TheresultsindicatedthatincorporatingthedopantsintographeneledtoanalmostlineardecreaseinYoung’smodulus.Monotonicreductionsinultimatestrength,ultimatestrainandenergyabsorptionwerealsoobserved.Suchdopingeffectswerefoundtobemostsignificantforsilicon,lesspronouncedforboron,andsmallornegligiblefornitrogen.Theoutputsprovideanimportantguidanceforthedevelopmentandoptimizationofnovelnanoscaledevices,andfacilitatethedevelopmentofgraphene-basedM/NEMS.

简介：Anovelseriesofcalix[4]azacrownderivativeswiththereactionbetweencalix[4]azacrownandthedifferentfluorophorederivatives,whichmaybeusefulfluorescentreceptors,havebeensynthesizedandstructurallycharacterizedbyIR,~1HNMR,~(13)CNMRandMS.Fromtheiranalysisdata,itwasfoundthosecompoundsadoptedaconeconformation.

简介：LongtimebehaviorofdegenerateequationswiththenonlinearityofpolynomialgrowthofarbitraryorderonthewholespaceRNisconsidered.Byusing-trajectoriesmethods,weprovedthatweaksolutionsgeneratedbydegenerateequationspossessan(L2U(RN),L2loc(RN))-globalattractor.Moreover,theupperboundsoftheKolmogorovε-entropyforsuchglobalattractorarealsoobtained.

简介：Therearesomecurvedinterfacesinoceanacousticwaveguides.Tocomputewavepropagationalongtherangewithsomemarchingmethods,aflatteningoftheinternalinterfacesandatransformingequationareneeded.Inthispaperalocalor-thogonalcoordinatetransformandanequationtransformationareconstructedtoflatteninterfacesandchangetheHelmholtzequationasasolvableform.Forawaveguidewithaflattop,aflatbottomandncurvedinterfaces,thecoefficientsofthetrans-formedHelmholtzequationaregiveninaclosedformulationwhichcanbethoughtofasanextensionoftheformalworkrelatedtotheequationtransformationwithtwocurvedinternalinterfaces.Inthetransformedhorizontallystratifiedwaveguide,theone-wayreformulationbasedontheDirichlet-to-Neumann(DtN)mapisthenusedtoreducetheboundaryvalueproblemtoaninitialvalueproblem.NumericalimplementationoftheresultingoperatorRiccatiequationusesalargerangestepmethodtodiscretizetherangevariableandatruncatedlocaleigenfunctionexpansiontoapproximatetheoperators.Thismethodisparticularlyusefulforsolvinglongrangewavepropagationproblemsinslowlyvaryingwaveguides.Furthermore,themethodcanalsobeappliedtowavepropagationproblemsinacousticwaveguidesassociatedwithvarieddensity.

简介：ThepaperdefinesanextendedCesàrooperatorTgwithholomorphicsymbolgintheunitballBofCnasWhereg(z)=∑j=1∑nzjg/zjistheradialderivativeofg.Inthispaper,theauthorcharacterizesgforwhichTgisbounded(orcompact)ontheBlochspaceBandthelittleBlochspaceB0.

简介：为第四级的系统lauric-N-methylglucamide(MEGA-12)的中间阶段的微乳液的阶段行为/n-butanol/alkane/water与Winsor类型被学习了，-似鱼、新奇-似鱼的阶段图。一系列阶段倒置Winsor我()III(3)II()为三种阶段图被观察。阶段类型，阶段卷和到中间阶段的微乳液的目的从开始的白酒集中的范围从Winsor阶段图被获得。从-似鱼的阶段图，物理化学的参数，，例如团，在hydrophile-lipophile的n-butanol的部分平衡界面的层开始的坐标和中间阶段的微乳液的结束点，和在链烷阶段的MEGA-12和n-butanol的溶解度被计算。小说-似鱼的阶段图也被论述。从这种图，上述试验性的现象被观察，物理化学的参数正是计算的。新奇似鱼的阶段图优于Winsor并且-在增溶的评估的似鱼的阶段图相关物理化学的参数的微乳液和计算驱动。

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简介：ThispaperprovidesasolutionforthedegeneratescaleforN-gonconfigurationinantiplaneelasticityusingtheconformalmappingfunction,andthelowerandupperboundsforthedegeneratescaleforN=3,4,5,6,7,8,10,20,30,40,50,100,150and200,areevaluated.

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简介：讨论了区间I＝[0,1]上的所有反N型（即减－增－减型）函数的迭代根问题。