简介:TheMS7.0JiuzhaigouearthquakeoccurredonAugust8,2017.TheearthquakeoccurredinthevicinityoftheTazangfault,theMinjiangfaultandtheHuyafault,wherethefocalmechanismisofthestrikesliptype.Thestaticanddynamicanomaliesofthegravityfieldcanprovideimportantphysicalfieldinformationforstudyingthestructuralpropertiesofdeepcrust.Multi-scaledecompositiontechniquesareusedtoseparateBouguergravityatdifferentdepthsandgivesomeexplanationtogravityvariationsatdifferenttimespacescales.Theresultsindicatethatthewaveletmulti-scaleresultsoftheEGM2008modelandthemeasuredgravitydataareconsistent.Throughcomparativeanalysis,itisfoundthattheJiuzhaigouearthquakeoccurredinthestressenhancedregion.Thevariationofgravityfieldatdifferenttimescaleshasacertainscientificsignificanceforfurtherunderstandingpotentialearthquakerisktrend.
简介:在一个应用磁场(MF)的影响下面,eigenenergies和地面和第一个激动的状态(GFES)的特徵函数被在联合不均匀的Gaussian潜在的量很好的强壮的electron-LO-phonon(AGPQW)使用Pekar类型(VMPT)的一个变化方法获得。这个AGPQW系统可以作为二水平的qubit被采用。数字结果显示了(i)当电子处于GFES的重叠状态位于时,我们在AGPQW获得时间进化和电子概率密度的并列变化,(ii)由于在AGPQW的生长方向的不均匀的潜力的存在,概率密度显示出双山峰配置,而仅仅有一个,如果监禁是在AGPQW的xy飞机的二维的对称的,达到顶点,(iii)oscilla
简介:这份报纸发源维的分析的讨论并且在有磁力地帮助的使流体化的床上可伸缩。进程变量的基本检查,合并机械、磁性的单位,允许变量的混合集合的变换直到作为贡献帮助使液化行为的领域的效果代表表面力量的统一术语。自从新变量都是由三个基本领域产生的典型压力,这转变被称为压力变换:严肃,磁性并且液体流动。这条途径以无尺寸的组而非对古典维的分析恰当的正式代数学的操作探讨物理基础。基本的无尺寸的组称为小粒的磁性的邦德数字作为严肃并且磁场的典型压力的比率被介绍。这分析也提供描绘磁场的一套命名无尺寸的数字帮助使液化象Filippov数字,Rosensweig数字,Kwauk数字和Siegell数字那样,作为典型压力的比率发源。
简介:阶段地水晶(陆军)模型被用来模仿premelting脱臼运动对称当系统温度在时,在紧张行动下面倾斜谷物边界(STGB)远非,到融化的融化的点和结束分别地指。结果证明当premelting温度被接近到,本地premelting发生包围脱臼从在温度下面。STGB的premelting脱臼能在紧张行动下面滑行,并且premelting区域是为脱臼滑行的一个同伴。STGB腐烂的过程以二个高温度条件是很类似的。当premelting介绍,它减少为脱臼的滑行抵抗并且导致脱臼的一个更快的运动,并且也在STGB的腐烂过程期间引起系统的更多的精力减小。尽管有把紧张用于这些,premelting在STGB的整个腐烂过程取样,premelting脱臼区域显然不发展并且延长。这显示外部紧张行动不在高温度支持premelting,并且不能导致更多的premelting脱臼,它能在脱臼展览附近被欠到premelting阶段像液体的性质并且到容易滑行并且放松紧张精力的premelting脱臼;这与实验和分子的动力学的结果一致。
简介:Theeffectoffullysubmergedbouldersontheflowstructureinchannelshasbeenstudiedbysomeresearchers.However,manynaturalstreamshavebedmaterialwithbouldersthatarenotfullysubmergedunderwater.Inmanynaturalstreams,boulderscoverbetween1%and10%oftheareaofthestreamreach.Theeffectofnon-submergedbouldersonthevelocityprofileandflowcharacteristicsisveryimportantforassessingriverbeddeformation.Theobjectivesofthispaperaretofindthepatternofvelocitydistributionaroundanon-submergedboulderandtocompareitwiththeclassicalstudiesonflowresistanceandReynoldsstressdistributioninopenchannels.Also,byconsideringthevariationintheReynoldsstressdistributionatdifferentlocationsaroundanon-submergedboulder,theeffectofanon-submergedboulderontheestimationofshearvelocityandresistancetoflowhasbeeninvestigated.Resultsindicatesthatinsidethescourholecausedbyanon-submergedboulderinarivervelocitydistributionsareirregular.However,velocitydistributionsareregularoutsidethescourhole.ThepresenceofthebouldercausesaconsiderabledeviationoftheReynoldsshearstressfromtheclassicdistribution,showinganon-specificdistributionwithnegativevalues.TheclassicalmethodsforcalculatingshearvelocityarenotsuitablebecausethesemethodsdonotgivedetailedvelocityandReynoldsstressdistributionsinnaturalriverswithalotofboulders.Thus,theeffectofanon-submergedboulderontheestimationoftheresistancetoflowbyconsideringthevariationsinvelocityandReynoldsstressdistributionsatdifferentlocationsaroundanon-submergedboulderisimportantandneedstobestudiedinanaturalriverinsteadofjustinlaboratoryflumes.ThenegativevaluesinReynoldsstressdistributionaroundaboulderindicatethattheclassicalmethodsareunabletopredictresistancetoflow,andalsoshowstrongturbulenceinsidethescourholewherethecomplexflowconditionspresentambi
简介:Theinteractionsofstrong-fieldfew-cyclelaserpulseswithmetastablestatesofnoblegasatomsareexamined.Metastablenoblegasatomsofferacombinationoflowionizationpotentialandarelativelysimpleatomicstructure,makingthemexcellenttargetsforexaminingionizationdynamicsinvaryingexperimentalconditions.Areviewofthecurrentworkperformedonmetastablenoblegasatomsispresented.
简介:Sn-polymetallicoresatDachang,GuangxiAutonomousRegion,China,arehostedinMiddle-UpperDevonianreeflimestones,siliceousrocks,bandedandlenticularlimestones,etc.Twotypesoforebodiescanbedistinguishedaccordingtotheirtelationstothebedding:oneisdistributedalongthebeddingandthe.othercutsacrossthebedding.SnandsulfideorebodiesassociatedwithK-feldsparearemostlycharacterizedbylaminatedorestructure.MicroscopicexaminationsofK-feldspar-bearingrocks,inconjunctionwithX-raydiffraction,chemicalcomposiionandcathodoluminescencedataforK-feldspars,aswellastheirtelationstomineralization,theauthorsconsiderthattheK-feldspareareofauthigenicorigin,subordinatetotheepigeneticstageofdiagenesis,Theyresultedfromthereactionofmixed,deep-seated,circulatingundergroundhotwatersrichinK,AlandSiwithargillaceouscarbonatesduringtheIndonesianorogenicmovement.ItissuggestedmoreattentionshouldbepaidtotheeffectofauthigenicK-feldsparsonSnmineralization.Inthemeantimetheeventrelatedtocirculatingundergroundhotwatersshouldalsobetakenintoaccountsoastoprovidenewcluestoblindoreprospecting.
简介:Theschliereninterferogramsusedtobeanalyzedinaqualitativeway.Inthispaper,bymeansofthepowerfulcomputationalabilityandthelargememoryofcomputer;theimageprocessingmethodisinvestigatedforthedigitalizationofanaxisymmetricschliereninterferogramandthedeterminationofthedensityfield.Thismethodincludesthe2-Dlow-passfiltering,thethinningofinterferometricfringes,theextractionofphysicalinformationandthenumericalintegrationofthedensityfield.Theimageprocessingresultsshowthattheaccuracyofthequantitativeanalysisoftheschliereninterferogramcanbeimprovedandalotoftimecanbesavedindealingwithopticalexperimentalresults.Therefore,thealgorithmusedhereisusefulandefficient.
简介:Theeffectsofthemagneticfieldonthevalencebondpropertyofthedouble-quantum-dotmoleculearenumericallystudiedbythefiniteelementmethodandperturbationapproachbecauseoftheabsenceofcylindricalsymmetryinthehorizontallycoupleddots.Thecalculationresultsshowthattheenergyvalueofthegroundstatechangesdifferentlyfromthatofthefirstexcitedstatewithincreasingmagneticfieldstrength,andtheycrossunderacertainmagneticfield.Theincreasingmagneticfieldmakesthecovalentbondstatechangeintoanionicbondstate,whichagreesqualitativelywithexperimentalresultsandandmakesionicbondstatesremain.Theoscillatorstrengthoftransitionbetweencovalentbondstatesdecreasesdistinctlywiththeincreasingmagneticfieldstrength,whenthemoleculeisirradiatedbypolarizedlight.Suchaphenomenonispossiblyusefulforactualapplications.
简介:Wesystematicallystudiedtheinfluenceofmagneticfieldonzero-linemodes(ZLMs)ingrapheneanddemonstratedthephysicaloriginoftheirenhancedrobustnessbyemployingnoneqnilibriumGreen'sfunctionsandtheLandauerBiittikerformula.Wefoundthataperpendicularmagneticfieldcanseparatethewavefunctionsofthecounter-propagatingkinkstatesintooppositedirections.Specifically,theseparationvanishesatthechargeneutralitypointandincreasesastheFermileveldeviatesfromthechargeneutralitypointandcanreachamagnitudecomparabletothewavefunctionspreadatamoderatefieldstrength.SuchspatialseparationofoppositelypropagatingZLMseffectivelysuppressesbackseatteringandismoresignificantunderzigzagboundaryconditionthailunderarmchairboundarycondition.Moreover,thepresenceofmagneticfieldenlargesthebulkgapandsuppressestheboundstates,therebyfurtherreducingthescattering.ThesemechanismseffectivelyincreasethemeanfreepathsoftheZLMstoapproximately1|iniinthepresenceofadisorder.
简介:Inthispaper,recentmeasurementsoftipvortexflowwithandwithoutcavitationcarriedoutinCavitationMechanismTunnelofChinaShipScientificResearchCenter(CSSRC)arepresented.TheelliptichydrofoilwithsectionNACA662-415wasadoptedastestmodel.High-speedvideo(HSV)camerawasusedtovisualizethetrajectoryoftipvortexcoreandtheformoftipvortexcavitation(TVC)indifferentcavitationsituations.LaserDopplervelocimetry(LDV)wasemployedtomeasurethetipvortexflowfieldinsometypicalsectionsalongthevortextrajectorywiththecaseofcavitationfree.Stereoparticleimagevelocimetry(SPIV)systemwasusedtomeasurethevelocityandvorticitydistributionswithandwithoutcavitation.Seriesmeasurementresultssuchasvelocityandvorticitydistributions,thetrajectoryoftipvortexcore,thevortexcoreradius,cavitysizeandcavitationinceptionnumberwereobtained.Theresultsdemonstratedthattheminimumpressurecoefficientinthevortexcoreobtainedbyflowfieldmeasurementwasquitecoincidentwiththetipvortexcavitationinceptionnumberobtainedundertheconditionofhighincomingvelocityandlowaircontent.AndTVCwoulddecreasethevortexstrengthcomparingwiththecasewithoutcavitation.
简介:EFFECTOFSUCPENDINGMEDIUMVISCOSITYONORIENTATIONANDDEFORMATIONOFRBCSINASHEARFlOWFIELDWenZong-yao,MaWeiyuan,GaoTie,SunDagongDepa...
简介:TheSimplifiedSimpleBiospheremodel(SSiB)isvalidatedinoff-linesimulationsagainstfieldmeasurementsinthesummerof2001fromtheChinaHeavyRainfallExperimentandStudy(CHeRES)overagrasslandsitelocatedinthelowerreachesoftheYangtzeRiver.Wheninitializedanddrivenbytheobservedatmosphericforcing,themodelreproducedtheobservedsurfaceheatfluxesandsurfaceskintemperaturerealistically.Themodelwasalsoabletowellsimulatethevariationofsoilwatercontent.Thesensitivityexperimentsfoundthattheleafreflectancewasthemostsignificantparameterinimprovingtheestimationofsurfacealbedoduringbothwetanddryperiods.Thisstudysuggeststhatthemodeliscapableofsimulatingthephysicalprocessesandofassessingtheimpactofbiophysicalparametersthatrelatetoland-atmosphereinteractionsovertheeasternAsianmonsoonregions,whichiscrucialformesoscaleatmosphericmodels.
简介:Inthispaper,theeddycoefficientandthetreatmentfordividinglayersofEstoque’snumericalmodelinmodernPBLdynamicshavebeenappliedtoderiveorder-zeroandorder-oneanalyticsolutionsoverlarge-scaletopography,thesolutionsareusedtoobtainthedivergenceandverticalvelocity,improvingthepreviousresults.
简介:Thishighlyinterdisciplinaryresearchpaperdiscussessomenewinsightsintothefundamentalpropertiesofinformation-richsocialnetworks.Itmainlyfocuseson:i)Postulatingthegeneralpropertiesofaninformation-basednetworkingeconomy;ii)Modelingemergentandself-organizingfeaturesofsocialnetworks;iii)Discussinghowtosimulatecomplexsocialsystemsusingafield-basedapproachandmulti-agentplatforms.Additionally,thispapergivessomeideasofhowtoconstructavirtualfield-basedcommunicationsnetworkofintelligentagentsusingcurrentlyavailablecomputationalintelligencemethods.Anewsimulationparadigmofferssomeusefulconceptstotransformmultidimensionalfactorspace(representingamultiplicityofphenomenalformsandinteractions)intothemostuniversalspectralcodingsystem.Thispapergivessomeideasofhownotonlythecommunicationmechanismbutalsothesocialagentscanbesimulatedasoscillatingprocesses.
简介:Recently,considerableprogresshasbeenmadeinunderstandingtheearlyuniversebyloopquantumcosmology.Modestoetal.investigatedtheloopquantumblackhole(LQBH)usingimprovedsemiclassicalanalysisandtheyfoundthattheLQBHhastwohorizons,aneventhorizonandaCauchyhorizon,justliketheReissner-Nordstr¨omblackhole.ThispaperfocusesonthedynamicalevolutionofamasslessscalarwaveintheLQBHbackground.ByinvestigatingtherelationbetweenthecomplexfrequenciesofthemasslessscalarfieldandtheLQBHparametersusingthenumericalmethod,wefindthatthepolymericparameterPmakesthemasslessscalarfielddecaymorequicklyandmakesthegroundscalarwaveoscillateslowly.However,thepolymericparameterPcausesthefrequencyofthehighharmonicmasslessscalarwavetoshiftaccordingtoitsvalue.Wealsofindthattheloopquantumgravityareagapparametera0causesthemasslessscalarfieldtodecaymoreslowlyandmakestheperiodofthemasslessscalarfieldwavebecomelonger.Inthecomplexωplane,thefrequencycurvesmovecounterclockwisewhenthepolymericparameterPincreasesandthisspiraleffectismoreobviousforahigherharmonicscalarwave.
简介:Inagasturbineenginecombustor,highlyswirlingcombustionisusuallyadoptedtostabilizeflameandreducepollutantemissions.Swirlcup,asanairblastatomizer,iswidelyusedtoprovideauniformpresentationoffueldropletstothecombustordome.Thispaperinvestigatedtheeffectofsecondaryswirlerontheflowfielddownstreamoftheswirlcupusingparticleimagevelocimetry(PIV).Threeswirlcups’non-reactingflowfieldwerestudied:caseA,BandCwithsecondaryswirlervaneangle53°,60°and68°respectively.Detailedmeanandtransientvelocitiesandvorticityinthecenterplanewereobtained.FromthePIVresults,asharpcontrastflowfieldwasobtainedforcaseAtoothertwocasesduetothelowersecondaryswirlingintensity.TherecirculationzoneiscollapsedindisorderforthecaseA.Ignitiontestsofthethreecupswerecompletedinasinglecupcombustor.Ingeneral,theignitionperformanceincreaseswiththeincreasingofthesecondaryswirlingintensity.ForcaseA,theignitionperformanceisveryunstableandhasmuchrandomnessandthereisnoclearleanignitionboundarycanbegenerated.Thisworkcanfurtherunderstandtheswirlbehaviorandignitionmechanism.