简介:<正>OtosclerosiswasfirstdiscoveredbyValsalvain1704[1],andthetermwasfirstusedbyAntonvonTroltschin1872todifferentiatefromtympanosclerosis[2].Normallytheoticcystinhumanremainsstationaryafterfulldevelopmentandcontainsnovisibleactivatedosteoblastsor
简介:IntroductionIn1963,MoorA.M.[1]firstlyreportedthephosphateefect,i.e.,intheUVirradiation(253.7nm)ofaqueoussolutionsof4-amino-2-...
简介:Forskarntypedeposits,therearetwokindsofskarns,skarnformedbyfiltrating-diffusingmetasomatismandveinskarnformedbyfilling.Theveinskarn,discussedthispaperandconsideredtobemagmaticgenesis,ischaracterizedby:(1)occurringasveinwithdistinctboundarieswithcountryrocks,yetjustthesameeveninmarbleeasytobereplaced;(2)composedofamineralassemblagesimi-lartothatofgranite,containingpegmatiteaswellascoarseskarnmineralpockets,andsometimestran-sitedwithdikerocks;(3)clearcrystallinefeatureofdeposition;(4)sideronintietexture;(5)showingvesicular,bean-likeandflowstructures;(6)verycommonliquidimmiscibility;(7)verticalzoningofgravitationaldifferentiationcausedbyvolatileconcentrationupwards;(8)associatedandtransitedwithiron-copperorebodiesofmagmaticgenesisandtungsten-bearingquartzveinsofsilicatemagmaticgene-sisrichinvolatile;(9)meltinclusions.Twooriginsofskammagma,originatedbyassimilationofsilicatemagmaatitsemplacem
简介:ApplyingLagrange–Germain'stheoryofelasticthinplatesandHamiltonianformulation,thedynamicsofcantileverplatesandtheproblemofitsvibrationcontrolarestudied,andageneralsolutionisfinallygiven.BasedonHamiltonianandLagrangiandensityfunction,wecanobtaintheflexuralwaveequationoftheplateandtherelationshipbetweenthetransverseandthelongitudinaleigenvalues.Basedoneigenfunctionexpansion,dispersionequationsofpropagationmodeofcantileverplatesarededuced.Bysatisfyingtheboundaryconditionsofcantileverplates,thenaturalfrequenciesofthecantileverplatestructurecanbegiven.Then,analyticsolutionoftheprobleminplatestructureisobtained.Anhybridwave/modecontrolapproach,whichisbasedonbothindependentmodalspacecontrolandwavecontrolmethods,isdescribedandadoptedtoanalyzetheactivevibrationcontrolofcantileverplates.Thelow-order(controlledbymodalcontrol)andthehigh-order(controlledbywavecontrol)frequencyresponseofplatesarebothimproved.Thecontrolspilloverisavoidedandtherobustnessofthesystemisalsoimproved.Finally,simulationresultsareanalyzedanddiscussed.
简介:Theatmosphericintraseasonaloscillation(ISO)anditsinterannualvariabilityaresimulatedbytheatmosphericgeneralcirculationmodel,whichwasdevelopedattheInstituteofAtmosphericPhysics.Twonumericalexperimentswereperformed,correspondingtotheAMIP-IandAMIP-IIsimulations,respectively.Themodelreasonablyreproducesthemajoraspectsoftheintraseasonaloscillation,includingthepropagatingpropertyandtheseasonaldifferencesinthetropics,thewavenumberstructureofISOintheglobe,andtheglobalcoincidenceintheinterannualvariationofISO.Comparisonoftheresultsbetweenthetwoexperimentssuggeststhatimprovementoftheboundaryforcingorconsideringtheair-seainteractionmayhelptoimprovethesimulationontheISOanditsinterannualvariability.
简介:Atheoryofnonfluidizedgas-solidsflow,whichcombinesthetheoryofmultiphaseflowwiththemechanicsofparticulatemedia,wasproposedonthebasisofunderstandingthattheparticlescontacteachother,solidsandgasareinmovement,andthedragforceontheparticlescausedbyinterstitialgasflowissimilartogravityforcehavingthepropertyofmassforce.Thenthistheorywasverifiedbyexperimentsonverticalandinclinedmovingbeds,andwasappliedtocalculationanddesignofequipmentanddeviceswithmovingbeds,suchaspneumaticmovingbedtransport,dipleg,V-value,L-valve,orificeflow,andarchingprevention.Itcanbeusedtoguidethedesignandoperationofmovingbedsandfixedbeds.
简介:Theequilibriumfittingcode(EFIT)anditsapplicationintheJ-TEXTtokamakareintegratedbytheMatlablanguage.Thefunctionofanalysisandvisualizationtotheresultsisadded.Inaddition,theexperimentdatameasuredbysoftX-ray(SXR)areusedtocalculateplasmaequilibriumasaconstraintcondition.TheimprovedEFITcodeisusedforJ-TEXTdischargeandtheprofilesofplasmaparameterssuchasfluxfunction,safetyfactorq,pressureandcurrentdensityareobtainedfromthereconstructedconfigurations.
简介:Inthispaper,wefirstlyanalyzethe"3,400traveltimetable"usedforalongtimeinXinjiangSeismologicalNetworktoobtainthevelocitystructuremodelsinaccordwiththetablebyfitting.ThenwefitthevelocityofallseismicphasesrecordedinXinjiangregioninJanuary2009~December2013.Simulationanalysisisdoneonthereliabilityandstabilityofthevelocities,andaconceptisproposedforbuildingsubareacrustalvelocitymodelsaccordingtopartitioningofseismicclusterregions.ThecrustalvelocitymodelsuitablefortheYutianareaisfittedwiththedataofallphasesofseismiceventswithinaradiusof1°aroundthe2014YutianM_S7.3earthquakesinceJanuary2009,andthemodelisappliedtotherelocationoftheYutianM_S7.3earthquakeanddeterminationoffocaldepthsoftheearthquakesequence.
简介:FunctionsoftheStateFamilyPlanningCommission andItsMajorCoordinatingOrganizationsFunctionsoftheStateFamilyPlanningCommissionan...
简介:Objective:Toanalyzetheprinciplemechanismofthearcusplantarisanditsclinicalapplication.Methods:Thestatesofforcessustainedbythearcusplantariswereanalyzedandcalculatedaccordingtothemechanismofthequadraticparabolicarch.Results:Theaponeurosisplantariscorrespondedtothepullrodofthearcusplantaris.Themedialandlaterallongitudinalarchesformedbythepedalboneswerestablewiththerod,butunstablewithouttherod.Inthelattercondition,onloading,theforcesustaingedbytheparabolicarchbecameaforcesustainedbyasimplebeam,andthearcusplantaristendedtodisappear5andtobeflattened.clinically,240feetwithtalipesequinusweretreatedwithtriplearthrodesis.In34outofthereexamined156feet,theaponeurosisplantariswascutinadditiontothetriplearthrodesisandwasimmobilizedwithcastfor3months.Oneortwoyearslater,theirarcusplantarisdisappeared,paindevelopedwhenwalking,andsomeofthemwalkedwiththemidtarsaljointagainsttheground.Then,thetriplearthrodesisandshorteningoftheaponeurosisplantariswereappliedon18cases,andosteotomyofthecalcaneusandreconstructionoftheaponeurosisplantarisweremadeon10casesandsatisfactoryeffectswereobtained.Conclusions:Inordertoachievesatisfactorytherapeuticeffectsofthetriplearthrodesis,weshouldreestablishthearcusplantarisandaccuratelytreattheaponeurosisplantarisforthebalanceofthesurroundingmuscleforce.
简介:Testwashbackhasattractedagooddealofattentionfromresearchersfrommanycountriesintheworldandconsiderableresultshavebeenfound.Bystudyingformerresearches,thispaperreviewsthedefinitionofwashback,relevantconcept,theories,andthemechanismofwashbacksystematically.Itishopedthatthispapercanenrichanddeepenthedevelopmentoflanguagetestingtheories.
简介:ThispaperdevelopsaclaseofquadratureformulawithfirstderivativesItisdemonstratedthatitsdegreeofaccuracyisnotlessthan2k+1forasetofdistinctnodes{x0,x1,...,xn}overinterval[a,b],andjustonly2k+1forequallyspacednodes.FarovercomingtheshortcomingofinvolvingagreatnumberofmanualcomputationsfortheintegrationrulesoftheHermitianinterpolationformula,somesimpleformulasforcomputingautomaticallyβi,γiandE[f]bycomputeraregiven,especiallyforequallyspacednodes.
简介:在这篇文章,用WDVV方程,作者首先证明表面的发作的所有Gromov-Witteninvariants能被一些递归的关系从自己的Gromov-Witteninvariants计算。而且,它可以在发作上决定量产品。它也证明有为发作的大量cohomology的functoriality的某度。给词调音:量cohomology;WDVV方程;Gromov-Witten不变
简介:IntroductionFormanyyears,listeningcomprehensionhasbeentakenforgrantedasacourseandhassimplybeencontinuousandconstantlisteninggiventothestudentsregardlessofthestrategiesemployed,thestagesneededtoachievethegoalandtheappropriatenessofthematerials.Teachersteachtheirstudentslisteninginthewaytheythemselvesweretaught.Thisempiricalperspectiveofteaching,whichlacksasufficientlyscientificbasis,hasbeenchallengedinrecentyearsbyevidencefrompsycholinguisticresearch.Thisinfluentialfieldofstudyhasprovidedmanyfreshinsightsintothenatureofthehumanmindandbroadenedourviewoflanguageteaching.
简介:AftertheendoftheColdWar,therehaveemergedaseriesofnewsignificantphenomenaininternationalrelations.First,asaresultofthecollapseoftheformerSovietUnionandthedisintegrationoftheWarsawTreatyOrganization,thereisnolongeracommonenemyforWesternEuropeandtheUS.Second,con-
简介:ThispaperbrieflyintroducestheSeismotectonicMapofXinjianganditsneighborhoodinthescaleof1∶2500000.Themapisamended,supplementedandexpandedbasedofthenewlycompiledSeismotectonicMapofXinjianginscale1∶1000000.ThebasemapofthisseismotectonicmapisthegeologicmapofwesternChinaanditsneighborhoodcompiledbyLiTingdong.Theabundantnewmaterialsfromrelatedresearch,referentialliteraturesandtheanalysesonremotesensingdatawereusedinthecompilingwork.Adatabaseandrelevantdocumentsarebuiltfornearly300activefaultsand150activefolds.Thebasicinformationofthemajoractivefaults,especiallythoseneartheborderareasinthismapareintroducedinthispaper.