简介：Basedontheformerresearchworkoftheauthors,theresistanceofdifferentsolidparticlesuspensionflowinaverticalpipeisanalysed,andinvestigatedexperimentally.Theapplicableformulasofpressuredroparepresented.Twotypesofpar-ticles,talcumpowderandglassbeads,areconvcyedinthetestwhichhasbeencarriedoutatvariousairvclocitiesof10to28m/sandattheratioofsolids-airmassflowraterangedfrom0to2.Theexperimentalresultsshowagoodagreementwiththecalculatedones.

简介：Anoveldesignofatwo-channelopticaladd–dropmultiplexerbasedonaself-rolled-upmicrotube(SRM)ispresented.ThisdesignconsistsofanSRMthathasaparaboliclobe-likepatternalongthetube'saxialdirection,aswellasstraightsiliconwaveguidesanda180°waveguidebend.TheverticalconfigurationoftheSRMandwaveguidesisanalyzedbythecoupledmodetheoryforachievingtheoptimumgap.Inthecriticalcouplingregime,whenthedeviceservesasanopticaldemultiplexer,theminimuminsertionlossis1.94dB,andthemaximumchannelcrosstalkis-6.036dB.Also,asanopticalmultiplexer,themaximumcrosstalkbecomes-11.9dB.

简介：AlittledropofwateraskedtheGodfortherealappearanceontheearth.TheGodsaid:“Mydearchild,justgoaheadandsee.Youwillfindtheanswerinyourjourney.”Inacuriousmood,thelittledropbeganhistrip.Nosoonerhadhecondensedintheskythanhesawthespotlesssky.Itwasalovelymorning,andafewfleecywhitecloudswereslowlyfloatinginthesky,Thelovelywhiteandsoftcloudsinvariousshapesattractedthedrop.

简介：Dropmealine是一个非常地道的口语。在没有电话，没有email的时代，它最初表示“有什么消息简单写几个字寄过来吧”。如今，通讯发达。大家都用手机sendmessage，email，fax等等，很少用写信这种“古老方式”，但这个说法却一直沿用至今。衍生义为“记得要和我联系啊”!

简介：引入了Banach空间的局部k-drop凸性质，研究了k-drop凸与局部k-drop凸的一些性质以及两者之间的关系，并用单位球的切片统一而简洁地处理了这两个性质．

简介：Thesedays,Ican'tcalmmyselfdown.Ihavethoughtalotaboutmyyoungersisterdroppingoutofschool.

简介：Withthedevelopmentofhigh-resolutionandmulti-scaleunifiednumericalmodel,someoftechniquesaboutnon-hydrostaticmeso-scalenumericalweatherpredictionareaddressed.Theimpactoftheverticalcoordinatesystemisoneofthem.Inthispaper,basedonaWRF(WeatherResearchandForecast)model,theimpactonthecalculationofverticalvelocitywasstudiedwithdifferentverticalcoordinates.Thesimulationresultsshowedthatthecalculationofverticalvelocityissensitivetoverticalcoordinates.Itisespeciallymoreevidentwhentheresolutionincreased.Duetothecloserelationshipsbetweenverticalvelocityandprecipitation,thedifferenceofverticalvelocityinevitablyinfluencesmodel'sdescriptionofprecipitation.Anidealexperimentexhibitsthatpressuregradientforcecomputationsinthepressureterrain-followingcoordinatearesensitivetosurfacepressure.

简介：提起蓝球鞋，通常会跟严密的保护性、运动化十足的造型以及略显“强壮”的外观相关联。没错，大多数蓝球鞋都是这样的。但总有一些另类的球鞋会脱颖而出，他们既有蓝球鞋优异的专业性能，又能像休闲鞋一样平常穿着，

简介：Densitystratifiedflowwithboththeverticaltemperaturegradientandtheverti-calsalinitygradientissimulatednumerically,inwhichturbulenttermsarecalculatedbyasim-plifiedturbulencestress/fluxalgebraicmodel.Thefeatureofstratificationandturbulenceisde-scribedcorrectlybythemodel.Thecomputationalresultsagreewellwiththeexperimentaldata.However,thek-eturbulencemodelisnotsosuccessful.

简介：Thepresentworkprovidesanovelmethodforcalculatingverticalvelocitybasedoncontinuityequationsinapressurecoordinatesystem.Themethodovercomesthedisadvantageofaccumulationofcalculatingerrorsofhorizontaldivergenceincurrentkinematicsmethodsduringtheintegrationforcalculatingverticalvelocity,andconsequentlyavoidsitssubsequentcorrection.Inaddition,throughmodificationsofthecontinuityequations,itshowsthatthevorticityoftheverticalshearvector(VVSV)isproportionalto-ω,theverticalvelocityinpcoordinates.Furthermore,ifthechangeofωinthehorizontaldirectionisneglected,thevorticityofthehorizontalvorticityvectorisproportionalto-ω.Whenωisunderafluctuatingstateintheverticaldirection,theupdraftoccurswhenthevectorofhorizontalvorticityrotatescounterclockwise;thedowndraftoccurswhenrotatingclockwise.ThevalidationresultindicatesthatthepresentmethodisgenerallybetterthantheverticalvelocitycalculatedbytheωequationusingthewetQ-vectordivergenceasaforcingterm,andtheverticalvelocitycalculatedbyutilizingthekinematicsmethodisfollowedbytheO’Brienmethodforcorrection.Theplus-minussignoftheverticalvelocityobtainedwiththismethodisnotcorrelatedwiththeintensityofdBZ,buttheabsoluteerrorincreaseswhendBZis>=40.Thismethoddemonstratesthatitisagoodreflectionofthedirectionoftheverticalvelocity.

简介：NetcapitalflowstodevelopingcountriesfelltoUS$780billionin2008,reversinganupwardtrendthatbeganin2003andpeakedatUS$1,222billionin2007,accordingtoanewreportfromtheWorldBank.Particularlyhardhitwereprivatecapitalflows,whichfellbyalmost40%.Alldevelopingregionswereaffected,withemerging

简介：基于在液体的某些性质和在给定的条件下面形成的相应液体落下的性质之间的关联，测量设备的液体落下被利用与光电的测量监视液体样品的落下形成进程方法。液体的机械、光的特征与光纤维被探索从液体落下内部在它的形成期间。落下头电容器被利用监视液体落下的生长进程获得与液体的物理性质有关的落下卷信息。包含液体的综合性质的唯一的液体落下踪迹被产生，并且它被为不同液体，他们的液体落下踪迹是不同的实验证明。在不同液体之间的液体性质和辨别上的分析能被继续，液体落下踪迹由测量设备的液体落下获得了。

简介：当流动正在波动时，实验被进行学习流动的特征。试验性的结果显示出流动率和压力落下变化之间的阶段差别。波动的流动率和压力落下之间的这阶段差别为laminar流动被分析。分析证明阶段差别随着流动变化，管子半径，密度和液体的动态粘性的时期变化。波动的管子流动然后数字地被模仿。数字模拟的结果与理论价值和试验性的结果相比。当流动率作为一个正弦波浪与时间波动时，压力落下与一样的频率波动，这被显示出，并且他们之间有阶段差别。

简介：

简介：Inthispaper,theprincipleofmirrorimageisusedtotransformtheproblemofwavediffractionfromacircularcylinderinfrontoforthogonalverticalwallsintotheproblemofdiffractionoffoursymmetricincidentwavesfromfoursymmetricallyarrangedcircularcylinders,andthentheeigenfunctionexpansionofvelocitypotentialandGrafsadditiontheoremareusedtogivetheanalyticalsolutiontothewavediffractionproblem.Therelationofthetotalwaveforceoncylindertothedistancebetweenthecylinderandorthogonalverticalwallsandtheincidenceangleofwaveisalsostudiedbynumericalcomputation.

简介：我们知道，在表示“建议”、“要求”、“命令”或“应当做……等意义的动词后面的宾语从句、表语从句和同位语从句中的谓语动词需要用虚拟语气，即用“(should)动词原形”来表示。为了便于记忆，我们可以把这些动词的首字母编成

简介：

简介：

简介：Regularandirregularwaveforcesactingonverticalwallsarestudiedbyapreviouslydevelopednumericalmodel.Thecomputedwaveforcesarecomparedwiththeavailableexperimentaldatatoverifythenumericalmodel,andsatisfactoryagreementsareobtained.Thevariationofwaveforceswithincidentanglesandtheshapeofsimultaneouspressuredistributionareinvestigated,andthecomparisonsbetweennumericalresultsandGoda'spredictionsarealsocarriedout.Itisconcludedthatthemaximumwaveforcesactingontheunitlengthofverticalwallisofteninducedbytheobliquelyincidentwavesinsteadofnormallyincidentwaves,whileGoda'sformulamaybeinapplicableforobliquewaveincidence.Theshapeofsimultaneouspressuredistributionisnotsignificantlyinfluencedbyincidentangles,anditcanbefavorablypredictedbyGoda'sformula.WhenregularwaveheightsaretakenasthesameasirregularwaveheightH1%,theirregularwaveforcesPh,1%areslightlylargerthanregularwaveforcesinmostcases.

简介：