简介:2Introduction,Citation,ReviewandDevelopmentofDiwaTheorybyForeignScientistsandScientistsofTaiwan,ChinaIn1956,theChinesegeoscientistChenGuodapublishedapaperentitled"ExamplesofActivatedRegionintheChinesePlatformwithSpecialReferencetotheCathaysiaProblem",inwhichheunderstoodplatformactivationasthetransfo
简介:Encodingsinpolymorphismwithfiniteproducttypesareconsidered.TheseencodingsaregivenintermsofI-algebras.Theyhavethpropertythatthegroundtermsarepreciselytheclosednormaltermsoftheencodedtypes.Theproofofawell-knownresultistransplantedtothesettinganditisshownwhyweakrecursionisadmissible.Thepaperalsoshowshowtocarryoutthedualencodingsusingtheexistentialquantifier.
简介:(FollowingVol.23,No.2) In1988,theRussiangeoscientistN.I.Nikolaevinthebook"NewestTectonicsandGeodynamicsofLithosphere"wrote:"In1960,whenexplainingthepeculiaritiesoftheMeso-CenozoicgeologicalhistoryofChina,ChenGuoda,equallywithplatformsandgeosynclines,alsodistingui
简介:Fourpapersinthebookhavementionedtheterm"diwa".ShcheglovA.D.inthcpaper"BasicMetallogenicFeaturesofRegionsofTectono-MagmaticActivizationandNewAvenuestoPrognosisofMineralDeposits"wrote:"Regionsoftectono-magmaticactivizationmaybesharplydividedintothefollowingtwotypes,eachhavingitsownpeculiaritiesofdevel
简介:(FollowingVol.24,No.1)Theauthorthinksthat'itisnecessarytoindependentlystudyactivationprocessesandstructures,astheirmetallogenyissharplydifferentfrommetallogenyofgeosynclinesandplatforms.Today,theirsignificanceincreasesbecauseweneedtoworkoutaregionalconceptofrationaluseofnaturalresources,whichcorsidersthatvariousnaturalresources(frommineraltorecycled)havenaturaldynamicrelationsandmutualdependentrelationships.'
简介:(FollowingVol.25,No.1-2)In1992,theRussiangeoscientistE.E.Milanovskyinthepaperentitled'ImportanceofStudiesandTheoreticalIdeasinChinaGeologyforSovietScienceDevelopment'emphasizedtheinfluenceofstudiesandtheoreticalideasinChina'sgeology,especiallyintectonicsandstratigraphy,onthedevelopmentofRussianscience.Helookedupontectono-magmaticactivizationasoneofthefourChina'sgeologicalachievementsthathavedeeplyinfluencedgeologicalthinkinginRussia.Hewrote:'InChinathepeculiarfeatureofMesozoicfolddeformationsandmagmaticmanifestationsconjugatetothemwastheirextremelywidedistributionwithintheChina-KoreaandSouthChinaplatforms.Thesephenomenawererecordedalsointhesouth-easternpartoftheSiberianplatform(withintheAldan-Stanovoishield)andintheeasternsegmentsoftheUrals-Mongolianmobilebelt(inthenortheasternpartofChina,intheeasternpartofMongoliaandtheTransbaikal-PriamurregionofRussia),wheretheHercynianfoldingcompletingtheirgeosynclinaldevelopmentwasfollowedintheearlyormiddleMesozoicbyeitherpartialregenerationofgeosynclinalregimeor,accordingtootherresearchers,tectonomagmaticactivization.'
简介:PotentialenergysurfaceofHNOSsystemisinvestigatedbymeansofMP2methodwith6-311++G(d,p)basisset.TheenergyforeachminimumandsaddlepointonthepotentialenergysurfaceiscorrectedattheQCISD(T)/6-311++G(3df,2p)leveloftheorywithzero-pointvibrationalenergyincluded.Asaresult,eighteenisomersaretheoreticallypredictedandcis-HNSOisfoundtobeglobalminimumonthepotentialenergysurface,Wherein,fourteenisomersareconsideredaskineticallystablespecies,andshouldbeexperimentallyobserved.ComparisonsaremadeforHNOSsystemwithitsanalogues,HNO2andNHS2.Thenatureofbondingandisomers'stabilityofHNOSsystemaresimilartoHNS2.TheobvioussimilaritiesanddiscrepanciesamongHNOS,HNO2andHNS2areattributedtothehypervalentcapacityofsulfur,oxygenandnitrogenatoms.
简介:Semi-periodicstructuresnamelyinclinedwavystructures(IWS)areexperimentallyobservedincompressiblemixinglayersattwoconvectiveMachnumbers(Mc=0.11and0.47).FlowstructuresarevisualizedbythelaserinducedplanarlaserMiescattering(PLMS)technique.TwomethodsaredevelopedtoinvestigatethespatialdistributionandgeometryofIWS:(1)thedominantmodeextraction(DME)method,toextractthedominantmodesofIWSfromthestreamwisegray-levelfluctuation,and(2)thephasetracking(PT)method,toidentifytheshapeofIWS.TheresultssuggestthatpressureperturbationsaccountfortheformationofIWSintheinitialmixingregionandthejointefectofdilatationandcoherentvorticesenhancesIWSinthewelldevelopedregion.Thelargetransverse(cross-flow)scaleoftheIWSandtheirrelationtocoherentvortices(CV)indicatethatthedisturbanceoriginatedfromCVinthemixingcenterpropagatesfarintothefreestreams.TheDMEandthePTmethodareshowntobetheefectivetoolstostudythegeometricalfeaturesofwavystructuresincompressibleshearflows.
简介:Recently,intelligentorsmartmaterialsandstructureshavebeenreceivedmoreandmoreattentionduetotheirdistinguishedmulti-fieldcouplingpropertiesandwideapplicationsinaerospace,automobiles,civilstructures,medicaldevices,informationstorage,energyharvestingandsoon.Itisofacademicchallengetofullyunderstandthecomplexmulti-fieldcouplingbehaviorsofvarioussmartmaterialsandstructures,andofengineeringsignificancetoenhancetheperformanceandreliabilityofthese
简介:Geodomestructuresinthispaperrefertopositiveunitsofdiffcrentorders,geodomespptem,geodomesericsandgeodome,inadiwaregion.Onthem,besidesintrusivebodies,thediwastructuralstag6iscomplcte1ymissingoron1yhasasmallareaandthickncss,butthop1atform,gcosynclina1andcvcnprcgcosyncllna1structuralstagcsarccxposcdwidc
简介:Inthispaper,wediscussthetopologicalstructuresofthevortexfilamentsandvortextubeswithanexactsolutionofastraightspiralvortextube.Wefindthattherearesomeconfusionsaboutthecalculationofthehelicitiesofaknottedvortexfilamentandsomelinkedvortexfilamentsbyusingdifferentmethods.Weexplainhowtounifythesemethodsandgivetherightresults.
简介:Diabetesmellitus(DM)isachronicsystemicdiseasecharacterizedbyhyperglycemia,withvariouspatho-genicmechanisms.Fromabsoluteorrelativeinsulindeficiency,patientswithDMoftendemonstratevari-ouslevelsofmetabolicdisorders.MajorclinicalmanifestationsofDMincludemetabolicdisorders,vascu-larlesions,circulatorydisturbancesandneurologiccomplications.AlongwithadvancesinDMresearch,re-portsofDMrelatedtinnitusandhearingimpairmenthaveincreasedcontinuously.ResearchonDMrelatedauditorysystemdysfunctionhasfocusedoncochlearmicrocirculation,cellularhomeostasis,geneticsandag-ing.Cochlearmicrocirculationplaysanimportantroleincochlearphysiologyanditsdisordersareassociat-edwithmanyinnereardiseases.Ischemiaandsubsequentreperfusionseenincochlearmicrocirculationdis-ordersareimportantfactorsinhearingdamage.UnderstandingcochlearmicrocirculationandstructuralaswellasfunctionalchangesinDMpatientswithhearinglossandtheircausalfactorswillhelprevealpatho-genicmechanismsindiabetichearinglossandprovidenewideasindevelopinginterventionsandpreventingdamagescausedbydiabetes.
简介:-Inthispaper,mathematicalmodelsanddynamicanalysesforbothSDOFandMDOFstructuresisolatedwithdampersareestablishedandperformed,andacomprehensivecomputationmethodisprovided.TheshockabsorbingeffectisillustratedthroughanexampleofatwoDOFdamper-isolatedsystemexcitedbysinusoidalwavesandactualgroundaccelerationinputrecordedinearthquakes.Itisshownthatmostoftheresponsesofthestructurewithdampersreducegreatlyneartheresonantzone,butaccelerationisenlargedinthelowerorhigherfrequencyzone;amongvariousparameters,theinfluenceoffrictionalcoefficientnisthemostsignificant,thatofdampingratioofthedampers,isthesecond,andthatofstiffnesscoefficientofthedampersk,istheslightest.
简介:Aprocedureforreanalysisofvariousstructuressubjectedtovarioustopologicalmodifi-cationsispresented.Theprocedureisbasedontheresultsofasingleexactanalysisandthefactoriza-tionofthestiffnessmatrixofinitialstructures.Itissuitableforthecaseofadditionofjoints,wherethenumberofthedegreesoffreedomisincreased.Themethoddealswiththestiffnessmatrixofstruc-turesdirectly,soitcanbeusedwithageneralfiniteelementsystem.Itisshownthattheproposedap-proximationmethodismosteffectiveintermsofaccuracy,efficiency,andeaseofimplementation.
简介:硼是不平常的物理特征从电子缺乏的、高度去除的共有原子价契约导出的周期表和展览上的碳的邻居。作为碳的最近的邻居,硼以类似于碳的许多方法,例如有采用sp2杂交的短共有原子价半径和灵活性。因此,硼能能够形成单层graphene的结构的类似物。尽管许多理论报纸报导了发现硼的二维的同素异形体,为如此的原子薄的硼nanostructures没有试验性的证据直到2016。最近,单个层的硼的成功的合成(叫作borophene)在Ag(111)上,底层打开硼nanostructures的时代。在这简短评论,我们将讨论以合成技术,描述和原子模型在borophene上被做了的进步。然而,borophene只在幼年期;更多的努力被期望在优秀样品的控制合成上在未来被作并且定制它的物理性质。