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简介：Inthispaper,weshalldealwiththeboundednessoftheLittlewood-Paleyoperatorswithroughkernel.WeprovetheboundednessoftheLusin-areaintegralμΩ,sandLittlewood-PaleyfunctionsμΩandμλontheweightedamalgamspaces(Lqω,Lp)α(Rn)as1

简介：WepresentthetemperaturedependentelectricaltransportmeasurementsofAg/Si（111）-（√3×√3）R30°bytheinsitumicro-four-pointprobemethodintegratedwithscanningtunnelingmicroscopy.Thesurfacestructurecharacterizationsshowhexagonalpatternsatroomtemperature,whichsupportstheinequivalenttriangle（IET）model.Ametal-insulatortransitionoccursat-115K.Thelowtemperaturetransportmeasurementsclearlyrevealthestronglocalizationcharacteristicsoftheinsulatingphase.

简介：Basedonconsolidationequationsproposedforunsaturatedsoil,ananalyticalsolutionfor1Dconsolidationofanunsaturatedsingle-layersoilwithnonhomogeneousmixedboundaryconditionisdeveloped.Themixedboundaryconditioncanbeusedforspecialapplications,suchastestsoccurinlaboratory.Theanalyticalsolutionisobtainedbyassumingallmaterialparametersremainconstantduringconsolidation.Inthederivationoftheanalyticalsolution,thenonhomogeneousboundaryconditionisfirsttransformedintoahomogeneousboundarycondition.Then,theeigenfunctionandeigenvaluearederivedaccordingtotheconsolidationequationsandthenewboundarycondition.Finally,usingthemethodofundeterminedcoefficientsandtheorthogonalrelationoftheeigenfunction,theanalyticalsolutionforthenewboundaryconditionisobtained.Thepresentmethodisapplicabletovarioustypesofboundaryconditions.Severalnumericalexamplesareprovidedtoinvestigatetheconsolidationbehaviorofanunsaturatedsingle-layersoilwithmixedboundarycondition.

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简介：Thispaperisconcernedwithexperimentalandnumericalresearchon3DflowpastprismaticturbinecascadeSE1050(knowninQNETnetworkasopentestcaseSE1050).Theprimarygoalwastoassesstheinfluenceoftheinletvelocityprofileontheflowstructuresintheinterbladechannelandontheflowfieldparametersatthecascadeexitandtocomparethesefindingstoresultsofnumericalsimulations.Investigationsof3Dflowpastthecascadewithnon-uniforminletvelocityprofilewerecarriedoutbothexperimentallyandnumericallyatsubsonic(M2is=0.8)andattransonic(M2is=1.2)regimeatdesignangleofincidence.Experimentaldatawasobtainedusingatraversingdevicewithafive-holeconicalprobe.Numerically,the3DflowwassimulatedbyopensourcecodeOpenFOAMandin-housecode.AnalysesofexperimentaldataandCFDsimulationshaverevealedthedevelopmentofdistinctivevortexstructuresresultingfromnon-uniforminletvelocityprofile.Originofthesestructuresresultsinincreasedlossofkineticenergyandspanwiseshiftofkineticenergylosscoefficientdistribution.Differencesfoundbetweenthesubsonicandthetransoniccaseconfirmearlierfindingsavailableintheliterature.ResultsofCFDandexperimentsagreereasonablywell.

简介：许多人都了解RADAR的概念一无线电探测和测距（Ra—dioDetectionandRanging），该技术通过发射无线电频率波在大气层传输，接触目标后反射回到系统进行处理，从而得出目标距离。近年来，电子扫描阵列使这一技术发生了革命性转变，可将无线电波以特定方向传输，无需机械移动。

简介：利用水热合成方法合成了2个新的配位聚合物[Ag（4,4′-bpy）（H2PO4）].2H2O（1）和[Cu4（L）8H4]（2）（4,4′-bpy=4,4′-联吡啶,L=4-咪唑基苯甲酸）,并通过元素分析、红外光谱和X-射线单晶衍射方法确定了该化合物的晶体结构.结构分析表明化合物1属于单斜晶系,P2/c空间群,晶胞参数a=8.4909（17）nm,b=8.7284（17）nm,c=18.498（4）nm,β=100.99（3）°,V=1.3458（5）nm3,Z=4,R1=0.0362,ωR2=0.0966.化合物1展示了一个一维的链式结构.化合物2属于单斜晶系,C2/c空间群,晶胞参数a=24.509（5）nm,b=18.957（5）nm,c=17.246（5）nm,β=119.807（5）°,V=6.953（3）nm3,Z=4,R1=0.0455（3564）,ωR2=0.1519（6161）.化合物2中存在着丰富的π…π堆积作用.

简介：由中科院西安光学精密机械研究所研发的国内首台高速3D内窥OCT影像系统成功问世。该设备使用自主研发的微型光纤探头，可深人心脏病患者血管栓塞处进行光学相干断层（OCT）扫描，获得栓塞处清晰的3D内窥影像。利用该影像技术可帮助医生在心脏手术中对支架安放位置精确定位，并可帮助医生实现对病变血管形态及心脏支架置人状况进行离线直接观察，其成像速度及分辨率都远超现有的血管超声（IVUS）和心脏X光（DSA）技术，对于有效预防支架再狭窄和血栓支架的形成、实现心肌梗死的早期筛查和有效预防以及研究和评价心脏支架安全陛有革命性意义。

简介：Anewefficientmeshlessmethodbasedontheelement-freeGalerkinmethodisproposedtoanalyzethestaticdeformationofthinandthickplatestructuresinthispaper.Usingthenew3Dshell-likekinematicsinanalogytothesolid-shellconceptofthefiniteelementmethod,discretizationiscarriedoutbythenodeslocatedontheupperandlowersurfacesofthestructures.Theapproximationofallunknownfieldvariablesiscarriedoutbyusingthemovingleastsquares(MLS)approximationschemeinthein-planedirections,whilethelinearinterpolationisappliedthroughthethicknessdirection.Thus,differentboundaryconditionsaredefinedonlyusingdisplacementsandpenaltymethodisusedtoenforcetheessentialboundaryconditions.TheconstrainedGalerkinweakform,whichincorporatesonlydisplacementdegreesoffreedom(d.o.f.s),isderived.Amodified3Dconstitutiverelationshipisadoptedinordertoavoidoreliminatesomeself-lockingeffects.Thenumericefficiencyoftheproposedmeshlessformulationisillustratedbythenumericexamples.

简介：提出了一类求解带有箱约束的非凸二次规划的新型分支定界算法．首先。把原问题目标函数进行D．C．分解（分解为两个凸函数之差），利用次梯度方法，求出其线性下界逼近函数的一个最优值，也即原问题的一个下界．然后，利用全局椭球算法获得原问题的一个上界，并根据分支定界方法把原问题的求解转化为一系列子问题的求解．最后，理论上证明了算法的收敛性，数值算例表明算法是有效可行的．

简介：标题化合物（C30H35N3）以4-甲基苯甲醛、环十二酮和3-甲基-1-苯基-1H-吡唑-5-胺,在三氟乙酸和醋酸的作用下,经微波辐射合成得到.其结构通过单晶X射线衍射法确定,晶体属单斜晶系,空间群P21/c,相对分子质量Mr=437.61,晶胞参数a=1.08926（11）nm,b=2.1927（2）nm,c=1.04954（14）nm,V=2.4641（5）nm3,Z=4,晶胞密度Dc=1.180g/m3,吸收系数μ=0.069mm-1,单胞中电子的数目F（000）=944.晶体结构用直接法解出,经全矩阵最小二乘法对原子参数进行修正,最终的偏离因子为R=0.0468,ωR=0.0905.在晶体结构中新形成的吡啶环为共平面结构.