简介：Anumericalsimulationandanexperimentalstudyonvortex-inducedmotion(VIM)ofanewtypeofdeepdraftmulti-columnsfloatingdrillingproduction,storageandoffloading(FDPSO)arepresentedinthispaper.Themaindimension,thespecialvariablecross-sectioncolumnandthecabinarrangementoftheoctagonalpontoonareintroducedbasedontheresult.Thenumericalsimulationisadaptedtostudytheeffectsofcurrentincidenceanglesandreducedvelocitiesonthisplatform'sswaymotionresponse.The300mwaterdepthequivalenttruncatedmooringsystemisadoptedforthemodeltests.Themodeltestsarecarriedouttocheckthereliabilityofnumericalsimulation.Theresultsconsistofsurge,swayandyawmotions,aswellasmotiontrajectories.Themaximumswayamplitudesfordifferenttypesofoffshoreplatformisalsostudied.Themainresultsshowthatthepeakfrequenciesofswaymotionunderdifferentcurrentincidenceanglesandreducedvelocitiesvaryaroundthenaturalfrequency.TheanalysisresultofflowfieldindicatesthatthechangeofdistributionofvortexinverticalpresentssignificantinfluencesontheVIMofplatform.ThetrendofswayamplituderatiocurveofthisnewtypeFDPSOdiffersfromtheothertypesofplatform.Under45°currentincidenceangle,theswayamplitudeofthisnewtypeofFDPSOismuchsmallerthanthoseofothertypesofoffshoreplatformat4.4≤Vr≤8.9.Thetypical'8'shapetrajectorydoesnotappearintheplatform'smotiontrajectories.

简介：ItiswellknownthattheReynoldsnumberhasasignificanteffectonthevortex-inducedvibrations(VIV)ofcylinders.Inthispaper,anovelin-line(IL)andcross-flow(CF)couplingVIVpredictionmodelforcircularcylindershasbeenproposed,inwhichtheinfluenceoftheReynoldsnumberwascomprehensivelyconsidered.TheStrouhalnumberlinkedwiththevortexsheddingfrequencywascalculatedthroughafunctionoftheReynoldsnumber.ThecoefficientofthemeandragforcewasfittedasanewpiecewisefunctionoftheReynoldsnumber,anditsamplificationresultedfromtheCFVIVwasalsotakenintoaccount.TheoscillatingdragandliftforcesweremodelledwithclassicalvanderPolwakeoscillatorsandtheirempiricalparametersweredeterminedbasedonthelock-inboundariesandthepeak-amplitudeformulas.Anewpeak-amplitudeformulafortheILVIVwasdevelopedundertheresonanceconditionwithrespecttothemass-dampingratioandtheReynoldsnumber.Whencomparedwiththeresultsfromtheexperimentsandsomeotherpredictionmodels,thepresentmodelcouldgivegoodestimationsonthevibrationamplitudesandfrequenciesoftheVIVbothforelastically-mountedrigidandlongflexiblecylinders.ThepresentmodelconsideringtheinfluenceoftheReynoldsnumbercouldgenerallyprovidebetterresultsthanthatneglectingtheeffectoftheReynoldsnumber.

简介：

简介：波浪光线理论被采用与不对称的基本流动在台风学习旋涡Rossby波浪的繁殖小径(光线)的特征，在正切的不对称的基本流动被在对称的基本流动上附加wavenumber-1不安流动构造的地方，并且光线的基本流动从非分叉方程被导出。在某个远处，在组速度和旋涡Rossby波浪的光线的斜坡上的基本流动的不对称现象的影响主要是的结果表演在最大的风(RMW)的半径附近专注，而它在RMW外面减少。在不对称的基本流动的旋涡Rossby波浪的光线、正切的组速度的分布是仔细，与这个组上的光线、正切的基本流动的不对称的基本流动，和重要性的最大的速度的方位角地点有关，速度将随着半径变化。另外，在基本流动的更强壮的不对称现象总是对应于旋涡Rossby波浪的更快的外面的精力繁殖。简言之，组速度，并且从而，波浪精力繁殖和旋涡Rossby波浪光线在台风倾斜，将被基本流动的不对称现象改变。

简介：

简介：

简介：Alaboratoryexperimentwasconductedinsideawindwavetanktoinvestigatethewaveinducedturbulence.Inthisexperiment,thewavesurfaceelevationandvelocitybeneaththewatersurfaceweremeasuredsimultaneouslytoinvestigatetherelationbetweenthewavestatusandwaveinducedturbulence.TheprofileoftheturbulentdissipationrateandReynoldsstresswerecalculatedusingexperimentaldata.Theeffectofthewavestatusonturbulenceisinvestigatedwithregardtothewindwave,swell,andmixedwaveconditions.Itwasdepictedthattheturbulencedecreasedwithincreasingdepthfromthewatersurfaceandthattheturbulencethatwasinducedbyawavewithlargerwavelengthandwaveheightismuchstrongerforthesamewavestatus.Finally,weobservedthatthewindwaveismoreeffectiveinactivatingthewaveinducedturbulence.

简介：

简介：Introduction:Theabsenceofvertigoduringthecalorictest,despitearobustresponse,hasbeensuggestedtorepresentacentralvestibularsystemphenomenon.Thepurposeofthisinvestigationwastodeterminetheprevalenceofabsentcaloric-inducedvertigoperceptioninanunselectedgroupofpatientsandtoassesspossiblepredictingvariables.Methods:Prospectiveinvestigationof92unselectedpatientswhounderwentcalorictesting.Inclusioncriteriawerethateachpatientgenerateamaximumslowphasevelocity(maxSPV)
15deg/secandacaloricasymmetryof10%.Followingthecaloric,patientswereasked,“Didyouhaveanysensationofmotion?”Results:Resultsshowed75%ofpatientsreportedmotionwithameanageof56.51yearscomparedtoameanageof66.55inthe25%ofpatientsreportinganabsenceofmotion.Alogisticregressionwasperformedandtheoverallmodelwasstatisticallysignificantaccountingfor29%ofthevarianceincaloricperception.ThesignificantpredictorvariableswerepatientageandmaxSPVofthecaloricresponse.Theeffectsizeforbothvariableswassmallwithanoddsratioof.9formaxSPVand1.06forage.Conclusions:ThecurrentinvestigationshowedthatbothageandmaxSPVofthecaloricresponseweresignificantpredictorsofvertigoperceptionduringthecaloricexam.However,theassociationbetweenageandcaloricperceptionisnotconclusive.Althoughthereisevidencetosuggestthatthesefindingsrepresentage-relatedchangesinthecentralprocessingofvestibularsystemstimulation,thereareadditionalunmeasuredfactorsthatinfluencetheperceptionofcaloric-inducedvertigo.

简介：WiththerapiddevelopmentofforeigntradeinChina,industrialimportandexporthasbeenanabsolutesubjectinrecentyears.Thehugetradesurplusofimportandexporttradeofindustrialproductsbringsnotonlyhighprofits,butalsopollutioncostsaswell.Basedontheconceptofwaterpollutionfootprints(WPFs),thisstudyappliestheinput-outputmethodandcalculatespollutant-producingcoefficientsof20majorindustrialsectorsinChinaandinvestigatestheWPFscausedbytheimportandexporttradesoftheseindustrialsectors.TheresearchresultsshowthatWPFresultingfromexportsexceedsthatofimportsfrom2011to2015inChina.Thenetinflowofpollutionfootprintismainlyfrompapermills,printingandstationerymanufacturing,andtextileindustry;whereasagreatnumberofWPFsaretransferredtoothercountriesbythesesectors,suchasmetalmininganddressingindustryandoilandnaturalgasexploitationindustry.

简介：Near-fleldcoupledplasmonicsystemsgenerallyachieveplasmonicallyinducedtransparency（PIT）usingonlyone-waybright-darkmodecoupling.However,itischallengingtorealizesuchwell-designeddevices,mainlybecausetheydependsignificantlyonthepolarizationdirection.Weexploitsurfaceplasmonssup-portedbytwocrossedlayersofgraphenenanoribbons（GNRs）toachievedynamicallytunablePIT,whereeachGNRoperatesasboththebrightanddarkmodessimultaneously.TheproposedPITcanresultfromeitherone-waybright-darkmodeinteractionsorbidirectionalbright-brightandbright-darkmodehybrid-izedcouplingwhenthepolarizationisperpendicular/paralleloratanangletotheGNRs,respectively.Additionally,identicalribbonwidthsyieldpolarization-insensitivesingle-windowPIT,whereasdifferentribbonwidthsproducepolarization-dependentdouble-windowPIT.Weexaminetheproposedtechniqueusingplasmonwavefunctionsandthetransfermatrixmethod;analyticalandnumericalresultsshowex-cellentagreement.ThisstudycanprovidephysicalinsightintothePITcouplingmechanismsandadvancetheanulicabilitvandversatilityofPIT-basedsensingplatformsandotheractivedevices.

简介：

简介：

简介：

简介：

简介：

简介：Thewave-inducedverticalshipmotionsandbendingmomentsofadoublehull-oiltankerinrealisticfloodingconditionsarestudied.Thescenariosinvestigatedarerepresentedbywateringressintothestarboardballasttanksforcollisiondamagecasesandbothstarboardandportsideballasttanksforgroundingsituations.Seakeepingcomputationsareperformedforeightdamagescenariosandfortheintactcondition,eachcorrespondingtodifferentchangesindisplacement,trim,andheel.Foreachofthedamageconditions,transferfunctionsofverticalmotionsandloadsarecalculatedusingapotentiallinear3Dpanelhydrodynamiccodeinthefrequencydomainthatincludeseffectofthemotionofthewaterinfloodedtanks.AMATLABcodeisdevelopedtofacilitateautomatedhydrodynamicsimulationofmanydamagescenarios.Verificationofseakeepingresultsisperformedbycomparingtransferfunctionswithresultsofthepreviousstudy.Wave-inducedverticalresponsesofdamagedshiparethencomparedtothoseofintactshipusingtwospectral-basedmethodsoriginatingfromuncertaintyanalysisofwaveloads,whichareconvenienttoolstoassessconsequencesofdamageonshort-termshipresponses.Generally,observedtrendisthatverticalwave-inducedresponsesofdamagedshipconvergetowardthoseofintactshipwithincreasingwaveperiod.Fairlysmalldifferencesbetweenresponsesofasymmetricallydamagedshipwithrespecttothesymmetricalincomingwavedirectionsarefound.Theresultsofthestudyareanefficientmethodforseakeepingassessmentofdamagedoiltankersandtheframeworkforevaluatingconsequencesofdamagescenarios,headingangles,andseaconditionsonseakeepingresponsesofdamagedships.Theresultscanbeusedtodecideiftheintactshipmodelcanbeusedinsteadofthedamagedonefortheemergencyresponseprocedureorfortheriskassessmentstudieswhenmodelingandcomputationaltimerepresentimportantlimitations.

简介：Themotionofabubblenearthefreesurfaceissolvedbytheboundaryelementmethodbasedonthelinearwaveequation,andtheinfluenceoffluidcompressibilityonbubbledynamicsisanalyzed.Basedonthesolutionofthebubblemotion,thefar-fieldradiationnoiseinducedbythebubbleiscalculatedusingKirchhoffmovingboundaryintegralequation,andtheinfluenceoffreesurfaceonfar-fieldnoiseisresearched.Astheresults,theoscillationamplitudeofthebubbleisweakenedincompressiblefluidcomparedwiththatinincompressiblefluid,andthefreesurfaceamplifiestheeffectoffluidcompressibility.Whenthedistancebetweenthebubbleandanobserverismuchlargerthanthatbetweenthebubbleandfreesurface,thesharpwavetroughofthesoundpressureattheobserveroccurs.Withtheincrementofthedistancebetweenthebubbleandfreesurface,thetimeofthewavetroughappearingisdelayedandthevalueofthewavetroughincrease.Whenthedistancebetweentheobserverandthebubbleisreduced,thesharpwavetroughattheobserverdisappears.

简介：肿瘤坏死因素相关的导致apoptosisligand(小道)是为anticancer的一个有希望的代理人治疗。能建立前列腺癌症(PCa)的敏感的小分子的鉴定房间到导致小道的apoptosis为PCa的指向的治疗是关键的。PC3，DU145，JAC-1，TsuPr1，和LNCaP房间与Andrographolide(Andro)被对待，小道，和apoptosis用AnnexinV/PI被测量两倍染色的方法。真实时间聚合酶链反应(PCR)和西方的污点分析被执行测量目标分子的表示层次。RNA干扰技术习惯于下面调整目标蛋白质的表示。我们建立了PCa的一个裸体老鼠异种皮移植模特儿，它被用来用流动cytometry在肿瘤房间测量caspase-3活动。在这研究研究，我们的结果证明Andro优先地在subtoxic集中增加了PCa房间的敏感到导致小道的apoptosis，并且规定机制与DR4的起来规定有关。另外，它也增加了p53表示并且在细胞导致了反应的氧种类(ROS)的产生。进一步的研究表明DR4抑制，p53表示，和ROS产生罐头显著地减少小道和Andro的联合在PCa房间导致的apoptosis。在结论，Andro通过ROS的产生和p53的起来规定增加PCa房间的敏感到导致小道的apoptosis然后支持与DR4的激活联系的PCa房间apoptosis。

简介：