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  • 简介:AIM:Topredictthevisualoutcomeinpatientsundergoingmacularholesurgerybytwonovelthree-dimensionalmorphologicalparametersonopticalcoherencetomography(OCT):arearatiofactor(ARF)andvolumeratiofactor(VRF).METHODS:Aclinicalcaseserieswasconducted,including54eyesof54patientswithanidiopathicmacularhole(IMH).EachpatienthadanOCTexaminationbeforeandaftersurgery.Morphologicalparametersofthemacularhole,suchasminimumdiameter,basediameter,andheightweremeasured.Then,themacularholeindex(MHI),tractionalholeindex(THI),andholeformfactor(HFF)werecalculated.Meanwhile,novelpostoperativemacularhole(MH)factors,ARFandVRFwerecalculatedbythree-dimensionalmorphology.Bivariatecorrelationswereperformedtoacquireasymptoticsignificancevaluesbetweenthesteadybestcorrectedvisualacuity(BCVA)aftersurgeryand2D/3DargumentsofMHbythePearsonmethodwithtwo-tailedtest.Allsignificantfactorswereanalyzedbythereceiveroperatingcharacteristic(ROC)curveanalysisofSPSSsoftwarewhichwereresponsibleforvisionrecovery.ROCcurvesanalyseswereperformedtofurtherdiscussthedifferentparametersonthepredictionofvisualoutcome.RESULTS:Themeanandstandarddeviationvaluesofpatients'age,symptomsduration,andfollow-uptimewere64.8±8.9y(range:28-81),18.6±11.5d(range:2-60),and11.4±0.4mo(range:6-24),respectively.Steady-postBCVAanalyzedwithbivariatecorrelationswasfoundtobesignificantlycorrelatedwithbasediameter(r=0.521,P<0.001),minimumdiameter(r=0.514,P<0.001),MHI(r=-0.531,P<0.001),THI(r=-0.386,P=0.004),HFF(r=-0.508,P<0.001),andARF(r=-0.532,P<0.001).Othercharacteristicparameterssuchasage,durationofsurgery,height,diameterholeindex,andVRFwerenotstatisticallysignificantwithsteady-post-BCVA.Accordingtoareaunderthecurve(AUC)values,valuesofARF,MHI,HFF,minimumdiameter,THI,andbasediameterare0.806,0.772,0.750,0.705,0.690,and0.686,respectively.However,Steady-post-BCVAanalysiswithbivar

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  • 简介:ThedevelopmentoftheHalfWaveResonator(HWR010)isbasedontheChinaADSproject.TheHWR010operatesat162.5MHzandcanprovidemorethan0.78MVofacceleratingvoltagepercavityforprotonwithopt=0.10.ThegoaloftheRFpropertiesistogetalowerheatloadandahigheracceleratinggradient,whicharedeterminedbyahigherR/Q0andlowerpeaksurfacefields(Bpk/EaccandEpk/Eacc).InordertooptimizetheHWRgeometryparameters,CST-MWSisusedtoconducttheRFsimulation.TheoptimizedRFparametersareshowinTable1.

  • 标签: HWR010 CAVITIES IMP
  • 简介:Thefinitevolumemethod(FVM)hasmanyadvantagesin2-Dshallowwaternumericalsimulation.Inthisstudy,thefinitevolumemethodisusedwithunstructuredtriangulargridstosimulatethetidalcurrents.TheRoeschemeisappliedinthecalculationoftheintercellnumericalflux,andtheMUSCLmethodisintroducedtoimproveitsaccuracy.Thetimeintegralisatwo-stepschemeofforecastandrevision.Fortheverificationofthepresentmethod,theStoker'sproblemiscalculatedandtheresultiscomparedwiththemathematicallyanalyticsolutions.Thecomparisonindicatesthatthemethodisfeasible.Aseaareaofaportisusedasanexampletotestthemethodestablishedhere.Theresultshowsthatthepresentcomputationalmethodissatisfactory,anditcouldbeappliedtotheengineeringfields.

  • 标签: 潮流 三角网格 数值模型 有限体积法 海洋动力学
  • 简介:我们在北伊朗的多山的森林里根据包含的山腰材料(土壤或岩石)和山腰坡度的类型调查了邻近小量的道路的树看台的损坏的分发和频率。80个阴谋的一个总数系统地并且随机被取样记录损坏的树(弯曲,压碎并且伤害)由在道路的边的山腰坡度和材料的班。树在岩石斜坡伤害并且压碎比在有黏土的混合的山腰显著地大(p?45%是比在有斜坡坡度的山腰上更经常的2,8.5和2.3次<15%为分别地弯曲,压碎并且伤害。类型和最经常的损坏改变的损坏分发是树伤害(p?

  • 标签: 道路建设 损坏 分发 频率 伤害 压碎
  • 简介:包括毛状的力量和毛状的吸,毛状的相互作用在有固定液体体积的二个不相等尺寸的粒子之间被调查。毛状的相互作用模型在Young-Laplace框架以内被使用。与液体桥,毛状的吸,和象州的变量的液体卷的顶点的侧面,有二定点的边界的管理方程首先用一种可变替换技术,严肃效果在被忽视被导出。有固定体积的液体桥的毛状的吸和几何学与一个射击方法被解决。在为毛状的力量建模,峡方法被使用。包括在二个粒子,粒子半径的比率,和液体固体之间的距离的各种各样的参数的效果联系角度被讨论。

  • 标签: 液体桥牌 Young-Laplace 方程 固定液体体积 射击方法 O363.2 76B45
  • 简介:and satellite element 1.,and the satellite element 1. a hybrid type form of  ,for the element

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  • 简介:fig. 4(a) water surface elevation for a circular dam-break circular dam-break,fig. 3(a) water surface elevation for a rectangular dam-break  ,fig. 4(c) velocity field for a circular dam-break

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  • 简介:Excessmolarvolume(VE)dataonbinaryliquidmixturesofmethylheptenone(MHO)withmethanol,ethanol,n-propanolorn-butanolhavebeendeterminedfromthedensitymeasurementsat298.15Kandatmosphericpressure.ThevaluesofVEinallthesystemsovertheentirecompositionrangearequantifiedbytheRedlich-Kisterequation.TheeffectsofthechainlengthofalkanolsonVEarediscussed.

  • 标签: EXCESS MOLAR volume BINARY mixtures Methylheptenone