简介：TheNdCl3/MgCl2bisupportedcatalystwaspreparedbyusingNdCl3,MgCl2,（CH3）2（CH2）2OHandTiCl4.ItisshownthatthestructureofbisupportedcatalystwasdifferentfromthoseofeitherNdCl3orMgCl2singlesupportedcatalyst.Apeculiartypeofkineticcurveforethylenepolymerizationwasfound.

简介：The1/3subharmonicsolutionfortheDuffing'sequationisinvestigatedbyusingthemethodsofharmonicbalanceandnumericalintegration.Thesensitivityofparametervariationforthetransientprocessandthetransientprocessfortheperturbanceinitialconditionsarestudied.Overandabove,theprecisionofnumericalintegrationmethodisdiscussedandthenumericalintegrationmethodiscomparedwiththeharmonicbalancemethod.Finally,asymptoticalstabilityofthepuresubharmonicoscillationselementisinspected.

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简介：Inthispaper,wepresentanovelSupportVectorMachineactivelearningalgorithmforeffective3Dmodelretrievalusingtheconceptofrelevancefeedback.Theproposedmethodlearnsfromthemostinformativeobjectswhicharemarkedbytheuser,andthencreatesaboundaryseparatingtherelevantmodelsfromirrelevantones.Whatitneedsisonlyasmallnumberof3Dmodelslabelledbytheuser.Itcangrasptheuser'ssemanticknowledgerapidlyandaccurately.Experimentalresultsshowedthattheproposedalgorithmsignificantlyimprovestheretrievaleffectiveness.Comparedwithfourstate-of-the-artqueryrefinementschemesfor3Dmodelretrieval,itprovidessuperiorretrievalperformanceafternomorethantworoundsofrelevance

简介：这篇文章与库仑潜在的x考虑3D-Hartree-type方程的一个家庭(?1)，其起始的数据震荡以便一苛性出现。在线性几何光学盒子中，由使用Lagrangian积分，对答案在外面的一致描述苛性、近苛性被获得。给词调音：Hartree方程；几何光学；Lagrangian积分

简介：在这研究，为波浪精力变换与固定指南翼推进一台推动汽轮机的表演的改进以便完成，表演上的指南翼形状的效果被实验调查。调查被模型在稳定的流动状况下面测试执行。作为结果，因为转矩的增加，有3D指南翼的汽轮机的效率比有2D指南翼的汽轮机的稍微优异，这被发现指南翼，尽管越过为3D案例的汽轮机的压力落下为2D案例比那稍微高。关键词液体机械-推动汽轮机-指南翼-波浪精力变换CLC数字TK735

简介：9to12,April,2018Suzhou,ChinaInternationalSymposiumseriesonHighPowerLaserScienceandEngineering,aimingatbringingtogetherworldwidescientistsandengineersworkingonhighpowerlaserandphysics,isheldeverytwoyearssince2014.Onbehalfofthe3rdInternationalSymposiumonHighPowerLaserScienceandEngineering(HPLSE2018),

简介：在这篇论文，没有5电路并且没有距离的三角形，我们证明那是每张飞机图不到33-colorable。这改进Borodin和Raspaud的主要结果[Borodin，O.V.，Raspaud，A.：为平面图到的一个足够的条件是3-colorable。组合理论的杂志，重量的单位。B，88，17-27(2003)]，并且提供新上面的界限给他们的conjecture。

简介：近似顺序什么时候是一个简单方法被给简洁地构造的一个奇怪的积极整数，与膨胀因素3支持了直角的对称的复杂可伸缩功能。二相应直角的小浪，一个人是对称的，其它关于起源是反对称的，明确地被构造。另外，当近似顺序是一个平整数时2，我们也给一个方法简洁地构造支持的直角的对称的建筑群小浪。最后，有几个例子，说明相应结果。

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简介：这份报纸使描述有弹性的字符串的一个3-dimensional网络的颤动的非线性的波浪方程的一个系统担心。作者导出方程和适当节的条件，决定平衡解决方案，并且，由使用quasilinear的方法夸张系统，证明那因为树联网天赋起始，边界值问题有古典解决方案在拉长的平衡解决方案的邻居存在。然后，这的本地可控制性近联网在某个指定时间间隔的配置被证明的如此的平衡。最后，它被证明那，给二不同平衡状态令人满意某些条件，在足够地大的时间间隔上在第二平衡的一位合适的邻居在一平衡的一位足够小的邻居从状态控制网络到任何状态是可能的。

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简介：TheNd2O3nanoparticleswhichmodifiedbyAOTwaspreparedusingmicrioemulsionmethodinthesystemofwater/xylene.L3edgeXAFSwasusedtodeterminethedifferenceofthelocalstructurearundNd^3+ionandtheelectricalstructurebetweenthenanocystallineNd2O3andthecoarsebulkmicrocrystallineNd2O3.ItwasfoundthatNd-Odistanceincreasedwiththeformofnanocrystalliteandtheintensityofabsorptionedgealsoenhancedatthesametime.

简介：Uniformlysizedα-Fe2O3hexagonalplateletsweresynthesizedbyahydrothermalprocessusingFe(OH)3suspensionandlargeamountofNaOH.ThereactionproductswerecharacterizedbyX-raydiffraction(XRD),scanningelectronmicroscopy(SEM),transmissionelectronmicroscopy(TEM),selectedareaelectrondiffraction(SAED),andavibratingsamplemagnetometer(VSM).Theresultsshowthatthehexagonalplateletsarefine,monodisperseandconsistingofsingle-crystals.Themagnetichysteresis(M-H)curveofthesamplesmeasuredatroomtemperatureindicatesthattheα-Fe2O3micro-plateletsexhibitferromagneticbehaviorswithrelativelylowcoercivity.

简介：Itisprovedthatevery3-connectedlooplessmultigraphhasmaximumgenusatleastone-thirdofitscyclerankplusoneifitscyclerankisnotlessthanten,andifitscyclerankislessthanten,itisupper-embeddable.Thislowerboundistight.Thereareinfinitelymany3-connectedlooplessmultigraphsattainingthisbound.

简介：Becausemostpiezoelectricdeviceshaveinterfaceswithfluidinengineering,itisvaluabletostudythecoupledfieldbetweenfluidandpiezoelectricmedia.Asthefundamentalproblem,the3DGreen'sfunctionsforpointforcesandpointchargeloadedinthefluidandpiezoelectricbimaterialsarestudiedinthispaper.Basedonthe3Dgeneralsolutionsexpressedbyharmonicfunctions,weconstructedthesuitableharmonicfunctionswithundeterminedconstantsatfirst.Then,thecouplefieldinthefluidandpiezoelectricbimaterialscanbederivedbysubstitutionofharmonicfunctionsintogeneralsolutions.Theseconstantscanbeobtainedbyvirtueofthecompatibility,boundary,andequilibriumconditions.Atlast,thecharacteristicsoftheelectromechanicalcoupledfieldsareshownbynumericalresults.

简介：3-Mercaptopropionicacidmonolayerprotectedgoldnanoclusters(MPA-MPCs)weresynthesizedandcharacterizedbytransmissionelectornmicroscopy,UV-Visspectroscopy,X-rayphotoelectronspectroscopyandFourlertransforminfraredspectroscopy.Theexactvalueofquantizeddouble-layercapacitanceofMPCsinaqueousmediawasobtainedbydifferentialpulsevoltammograms.

简介：Inthispaper,wefirstshowtheglobalexistence,uniquenessandregularityofweaksolutionsforthehyperbolicmagnetohydrodynamics(MHD)equationsinR~3.ThenweestablishthatthesolutionswithinitialdatabelongingtoH~m(R~3)∩L~1(R~3)havethefollowingtimedecayrate:║▽~mu(x,t)║~2+║▽~mb(x,t)║~2+║▽~(m+1)u(x,t)║~2+║▽~(m+1)b(x,t)║~2≤c(1+t)~(-3/2-m)forlarget,wherem=0,1.