简介：溪底有一个洞。传说在这个洞里，能看到未来的自己。Lily（莉莉）是生活在这条小溪里的一条普通的小鱼，既不漂亮也不聪明。为此，她总是闷闷不乐。有一天，Lily想去会会未来的自己，于是她游进了这个洞里。

简介：Filmcoolingisintroductionofasecondaryfluid(coolantorinjectedfluid)atoneormorediscretelocationsalongasurfaceexposedtoahightemperatureenvironmenttoprotectthatsurfacenotonlyintheimmediateregionofinjectionbutalsodownstreamregion.Thispapernumericallyinvestigatedthefilmcoolingeffectivenessontwotypesofholegeometrieswhicharecut-shapedholeandantivortexhole.The3Dcomputationalgeometriesaremodeledwithasingle30degangledholeonaflatsurface.Thedifferentblowingratiosof0.5,1,1.5,2,2.5,3,3.5,4,4.5,5andk-Epsilonturbulencemodelareusedinthisstudy.Atwodimensionaldistributionoffilmcoolingeffectivenessinthedownstreamregionofthecoolingholeisperformed.AcomparisonofspanwiseaveragedeffectivenessisalsoperformedinthefieldstartsfromcenterpointofholetoX/D=30.

简介：<正>实战编辑刘可为:进入了炎炎盛夏,是否怀念冬日的一丝凉意。很多摄影爱好者会希望有探索冰洞拍摄的机会,而在这样一个温度里坐在家中依旧能给你冰霜幻境。透光的冰洞一直是户外摄影爱好者向往的探险之地,现在身处家中也能通过镜头实现身未动心已远的神奇视觉体验,给炎炎夏日一抹蓝。

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简介：在这份报纸，我们从为在天体物理学测试买得起的无电荷的Grumiller黑洞(GBH)考虑相对论的HamiltonJacobi(HJ)方程和分级的粒子的学习兜售放射(HR)。当Rindler修改了SchwarzschildBH，它也被知道。我们的目的是调查Rindler参数的效果不仅一上兜售的温度(TH),但是检验是否在计算地平线温度和标准TH也。为这个目的，除了它的天真的坐标系统，我们在三个常规坐标系统上学习，它是Painlev

简介：Whenflowpassesoverafreeoverfallspillway,formsajet.Thisjetofflowwithahighvelocitymaycausescouratthedownstreamofspillway.Thescourholecharacteristicsisaffectedbyparameterslikedischargeintensity,dropheight,tailwaterdepth,sizeofbedmaterialandstandarddeviationofbedmaterial.Inthispaper,resultsofexperimentsonscourbelowfreeoverfallspillwayforuniformandnonuniformbedmaterialsarepresented.Itwasfoundthatscourholecharacteristics(i.e.maximumdepthofscour,distanceofmaximumscourpointfromspillway,widthofscourhole,distanceofendofscourholefromspillwayandheightofridgeformedatthedownstreamofscourhole)isafunctionofdensimetricFroudenumberandratioofdropheighttotailwaterdepth.Analysisofexperimentaldatawithuniformbedmaterialresultedinequationsforestimationofscourholecharacteristics.Furthercorrectionfactorswereintroducedinordertoconsidertheeffectofnon-uniformityofbedmaterial.

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简介：ThecombinedcharacterizationsofmobilityandphononscatteringspectraallowustoprobeholetransportprocessinepitaxialPbSecrystallinefilmsgrownbymolecularbeamepitaxy(MBE).ThemeasurementsofHalleffectshowp-typecon-ductivityofPbSeepitaxialfilms.At295K,thePbSesamplesdisplayholeconcentrationsof(5～8)×1017cm–3withmobilitiesofabout300cm2/(V·s),andat77Ktheholemobilityisashighas3×103cm2/(V·s).Fivescatteringmechanismslimitingholemobilitiesaretheoreticallyanalyzed.ThecalculationsandRamanscatteringmeasurementsshowthat,inthetemperaturesbetween200and295K,thescatteringofpolaropticalphononmodesdominatestheimpactontheobservedholemobilityintheepitaxialPbSefilms.RamanspectracharacterizationobservedstrongopticalphononscatteringsathightemperatureinthePbSeepitaxialfilms,whichisconsistentwiththeresultofthemeasuredholemobility.

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简介：ThispaperdetailstheresultsofajointprojectbetweenRolls-RoyceDeutschland(RRD)andtheNorthwesternPolytechnicalUniversityofChina(NWPU).Theobjectiveoftheprojectwasthedeterminationoftheinfluenceoftabulatorsinturbinebladecoolingpassagesonfilmholedischargecoefficients(Cdcoefficients).Alarge-scaleplexiglasmodelwasusedbytheNWPUtomeasuretheturbulatorinfluenceonCdcoefficientsforawiderangeofdifferentgeometricalparameters,Reynoldsnumbersandcoolingflowofftakeratios.RRDspecifiedthecomprehensivetestmatrixandanalysedthetestdata.TheCFDcodeFLUENTwasusedbyRRDfornumericalsimulationofthetestcaseswiththemainobjectivetosupporttheinterpretationofobservedtrends.Both,experimentalandnumericalresultswillbepresentedinthispaperforaselectionoftestconfigurations.

简介：TheentanglemententropyofanacousticblackholeinaBose–Einsteincondensates(BEC)isderived,whichisassociatedwiththephononsgeneratedviatheHawkingmechanisminasonichole.ConsideringthedispersionrelationofaBEC,werecalculatetheentanglemententropyoftheacousticblackholebymeansofstatisticalmethodintwolimits.Wefindthattheentropyisstillproportionaltotheareaofeventhorizon,butwithacoefcientdependentontheinfraredcutof.

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简介：钻洞的方法是为测量剩余压力的最著名的方法之一。在一个标本识别未知飞机压力，一个圆形的洞首先在飞机应力下面在无限的板中被钻，然后，源于钻的洞的紧张被测量。紧张可以从在洞附近解释Moiré签名被获得。在穿过的栅栏Moiréinterferometry，水平、垂直的排水量地(u和v)能被获得到确定二块紧张地和一砍紧张地。在这篇论文，借助于Moiréinterferometry和作者开发的三个方向栅栏(栅栏插座)，三排水量回答(u，v和s)被获得获得三块紧张地。作为一个实际应用程序，钻方法的洞被采用为增强的铝和纤维测量消除紧张合成。它是一一步一步地方法；在各个走一个单身者把压成薄片或相等的深度被钻发现在钻的深度和在纤维减轻的剩余紧张之间的一些关系增强合成材料。

简介：我们调查用HamiltonJacobi方法从一个五维的Lovelock黑洞兜售放射。放射的率的行为为紫外修正参数和宇宙论的常数的各种各样的值被阴谋。结果显示出那，由于紫外修正和宇宙论的常数代表的黑暗精力的存在，没有紫外修正或宇宙论的常数，黑洞与案例相比以更慢的率放射。而且，宇宙论的常数的存在在黑洞放射上做紫外修正的效果可以忽略。

简介：我们扩大张和赵“到有其Arnowitt-Deser-Misner集中的拓扑的缺点的黑洞的最近的工作不再是的s与它的集体参数相同。掘的行为巨大的粒子被调查，并且巨大的粒子越过黑洞的事件地平线在掘的排放率是计算的。结果与一个内在的单一的理论一致，并且拿象集体更少的粒子的一样的功能的形式。

简介：Experimentalfluidizationresultswerecomparedforthreegasdistributorswiththesameopeningratiobutdifferentorificeinclinations(30,45,and90).Hydrodynamicstudieswereconductedwithglassbeads(diameter154p.m)toevaluatetheimpactsoforificeinclinationandstaticbeddepthonpressuredrop,pressuredropfluctuations,bedexpansion,andminimumfluidizationvelocity.Solidsresidencetimedistributionsweredeterminedusingphosphorescenttracerparticles(meandiameter76pm),activatedbyultravioletlight.Thebedpressuredropwashigherwiththeinclined-holedistributorsandincreasedwithstaticbedheight.Inashallowbed,theinclined-holedistributorsgavelessexpansion;however,indeepbeds,theorificeanglehadnegligibleinfluenceonbedexpansion.Theminimumfluidizationvelocityvariedwithstaticbedheightfortheinclined-holedistributorsandwashigherforsteeperangles.Theturnovertimeestimatedusingbubbling-bedequationsmatchedtheexperimentalresultswellforverticalmixing.Probesandportsatthewallsofthefluidizationcolumnreducedthedense-phasedownwardvelocitybyupto40%.Thetangentialparticlevelocitywashighestforthe30-holedistributoranddecreasedwithincreasingorificeangle.Tangentialmixingwasdescribedbyadispersionmodel;thedispersioncoefficientfortheinclined-holedistributorswasapproximatelytwicethatforthe90-holedistributorinashallowbed.

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

简介：Sincelocalscouratbridgepiersinriversandestuariesisamajorcauseofbridgefailure,estimationofthemaximumlocalscourdepthisofgreatimportancetohydraulicandcoastalengineers.Althoughnumerousstudiesthatfocusonscour-depthpredictionhavebeendoneandpublished,understandingoftheflowandturbulencecharacteristicsofthehorseshoevortexthatdrivesthescourmechanisminadevelopingscourholestillisimmature.Thisstudyaimstoquantifythedetailedturbulentflowfieldinadevelopingclear-waterscourholeatacircularpierusingParticleImageVelocimetry(PIV).Thedistributionsofvelocityfields,turbulenceintensities,andReynoldsshearstressesofthehorseshoevortexthatforminfrontofthepieratdifferentscourstages(t=0,0.5,1,12,24,and48h)arepresentedinthispaper.Duringscourdevelopment,thehorseshoevortexsystemwasfoundtoevolvefromoneinitiallysmallvortextothreevortices.Thestrengthandsizeofthemainvortexarefoundtoincreasewithincreasingscourdepth.TheregionsofboththemaximumturbulenceintensityandReynoldsshearstressarefoundtoformatalocationupstreamofthemainvortex,wherethelargeturbulenteddieshavethehighestpossibilityofoccurrence.Resultsfromthisstudynotonlyprovidenewinsightintothecomplexflow-sedimentinteractionatbridgepiers,butalsoprovidevaluableexperimentaldatabasesforadvancednumericalsimulations.

简介：Ｔｈｅ　ａｎａｌｙｓｉｓ　ｏｆ　ｄｉｓｋ　ｃｏｒｅ　ｆｒｏｍ　ｔｈｅ　Ｍａｏｐｉｎｇ　８００　ｍ　ｂｏｒｅ　ｈｏｌｅ（阮小平）（李方全）ＴｈｅａｎａｌｙｓｉｓｏｆｄｉｓｋｃｏｒｅｆｒｏｍｔｈｅＭａｏｐｉｎｇ８００ｍｂｏｒｅｈｏｌｅ￥Ｘｉａｏ－Ｐｉｎｇ...

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