简介：Step-edge-inducednucleationplaysakeyroleincontrollingthegrowthofnovelnanostructuresandlow-dimensionalmaterials.However,itisdifficulttoexperimentallydeterminethestepedgestructuresofcomplexmetaloxides.Inthiswork,wepresentadetailedtheoreticalstudyofthestabilityofstoichiometTicstepsonsapphire(OOOl).Basedonfirst-principlescalculationsandexcesschargecomputationbyFinnis1approach,apairofnon-polarstepedgesaredeterminedtobethemoststable.BystudyingtheadsorptioncharacteristicsofZnOandcombiningpreviousworks,wesuccessfullyexplainedhowgrowthtemperatureanddepositionrateaffectthein-planeorientationofZnOgrownonsapphire(OOOl).Theknowledgeonthestepedgestructuresandnucleationpatternswouldbenefitthestudyonstep-edge-guidednanostructuregrowth.

简介：ScaleeffectofISWsloadsonFloatingProductionStorageandOffloading(FPSO)isstudiedinthispaper.TheapplicationconditionsofKdV,eKdVandMCCISWstheoriesareusedinthenumericalmethod.ThedepthaveragedvelocitiesinducedbyISWsareusedforthevelocity-inletboundary.Threescalerationumericalmodelsλ=1,20and300wereselected,whichthescaleratioisthesizeratioofnumericalmodelstotheexperimentalmodel.Thecomparisonsbetweenthenumericalandformerexperimentalresultsareperformedtoverifythefeasibilityofnumericalmethod.Thecomparisonsbetweenthenumericalandsimplifiedtheoreticalresultsareperformedtodiscusstheapplicabilityofthesimplifiedtheoreticalmodelsummarizedfromtheloadexperiments.Firstly,thenumericalresultsofλ=1numericalmodelshowedagoodagreementwithformerexperimentalandsimplifiedtheoreticalresults.ItisfeasibletosimulatetheISWsloadsonFPSObythenumericalmethod.Secondly,thecomparisonsbetweentheresultsofthreescalerationumericalmodelsandexperimentalresultsindicatedthatthescaleratioshavemoresignificantinfluenceontheexperimentalhorizontalforcesthantheverticalforces.Thescaleeffectofhorizontalforcesmainlyresultsfromthedifferentviscosityeffectsassociatedwiththemodel’sdimension.Finally,throughthecomparisonsbetweenthenumericalandsimplifiedtheoreticalresultsforthreescaleratiomodels,thesimplifiedtheoreticalmodelofthepressuredifferenceandfrictionforcesexertedbyISWsonFPSOisappliedforlarge-scaleorfull-scaleFPSO.