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

简介：沿着山东省的东方海岸有教养的牡蛎的化学成分的每月的差别被分析。部件分析了包括的肝糖，丰满的酸和免费氨酸(FAA)。肝糖的内容在1月和三月高(2.89并且2.82g(100g)~(-1)平均，分别地)并且在10月低(2.07g(100g)~(-1)平均)。在10月的中立类脂化合物的低内容反映了牡蛎的相对差的营养的价值(1.42g(100g)~(-1)平均)。牡蛎的主要的丰满的酸是十六酸酸(16:0)，油的酸(18:1)，eicosapentaenoic酸(EPA，20:5ω-3)并且docosahexaenoic酸(DHA，22:6ω-3)。牡蛎的majorFAAs是公牛的，Glutamicacid，Glycin，丙氨酸，精氨酸和脯氨酸。公牛有它的内容的最丰富的FAA从603mg(100g)正在~(-1)到1139mg(100g)~(-1)。肝糖的高内容，丰满的酸和FAA显示出的多元不堡和沿着山东省的东方海岸有教养的那只牡蛎是在1月和三月好的营养联盟者。

简介：Freespanningpipelinesaresuspendedbetweentwopointsonanunevenseafloor.Thevariationsofstructuralconditions,suchasthechangesinsoilproperty,flowvelocity,axialforceandspanlengthetc.,directlyaffectworkingperformanceofthewholesubmarinepipelinesystem.Butuntilnowfewresearcheshavefocusedonconditionidentificationforfreespan(CIFS).Amethodtoidentifytheoperationalconditionsoffreespanningsubmarinepipelinesbasedonvibrationmeasurementsisproposedinthispaper.Firstly,theill-posednessofCIFSisanalyzedindetail.Secondly,theframeworkforCIFSbasedonthenonlinearkerneldiscriminantanalysis(KDA)isestablished.Thirdly,theinternalstructuralcharacteristicsofnaturalfrequencies,normalizedfrequenciesandfrequencychangeratiosarestudied.AndthentheconditionfeaturevectorforCIFSisextractedbyuseofthevibrationmeasurements.Finally,thevalidityoftheproposedapproachisevaluatedbyacasestudy.Theresultsdemonstratethattheproposedapproachcaneffectivelyidentifyeachconditionoffreespanwhenconditionvariationoccursevenifundermeasurementnoise.ItisconcludedthattheproposedmethodisapromisingtoolforCIFSinrealapplications.

简介：在这份报纸，理论免费triaxial地球摇摆被开发，新结论被得出：Euler时期应该被第一种完全的椭圆形的积分实际上表示；免费极的运动的踪迹是椭圆形的，它的半未成年者和主要的轴的取向分别地与地球主要的轴A和B近似平行。另外，现在的理论证明有在蜡烛制造者的频率振幅调整的机制摇摆，它可能是解释在蜡烛制造者的振幅和时期之间的关联的一个候选人摇摆。

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

简介：免费生活的海洋的线虫的五种是redescribed并且在中国的黄海说明同样新的记录。这些种类包括一monhysterid，在家庭Diplopeltidae的Campylaimusgerlachi和四enoplids在家庭Oxystominidae的种类，Oxystominaelongata，Oxystominaelegans，Halalaimuslutarus和Halalaimuswodjanizkii。生态、分类的讲话与原来的描述比较被提供并且讨论。类Campylaimus的所有已知的种的关键被给。我们的调查结果离开犯错到benthic生态学和生物多样性的线虫的分类信息黄海学习。

简介：隔离轴承和dampers经常在墩和上层建筑之间被安装在大地震下面减少桥的地震回答。这份报纸论述为桥更潮湿的新奇的钢。更潮湿作为精力驱散部件采用钢盘子，并且采用垂直免费机制完成一个大变丑能力。用用称为ABAQUS的一个有限元素节目的控制排水量的周期的装载和数字分析的伪静电干扰测试被进行调查行为更潮湿，并且设计方法论基于测试和数字分析被建议。从这研究获得的主要结论如下：(1)新dampers在大排水量下面有稳定的磁滞现象行为；(2)有限元素分析能模仿行为与令人满意的精确性更潮湿；并且(3)简化了设计方法论更潮湿是有效的。

简介：海冰飘移的许多有趣的特征取决于大气拖系数(C)并且海洋拖系数(Cw)。Parameterizations拖系数而非经常的价值提供我们在海冰上看卓见进这些特征的依赖的一个方法调节。在现在的学习，parameterized冰拖系数被包括进免费飘移的海冰动态模型，并且在海冰之间的风因素和偏转角度漂流并且弯屈速度以及C到Cw被学习在象本地人那样的影响因素上调查他们的依赖拖系数，大浮冰和山脉几何学。结果在理想化的稳定的海洋揭示那，C/Cw在边缘的冰地区为小冰大浮冰与增加的冰集中显然增加，当它为大大浮冰在稳定的水平(0.20.25)留在中央冰地区时。风因素起初很快增加并且当A比20%大时，接近0.018的稳定的水平。并且偏转角度从起始的价值很快落下接近80慦桳潩？

简介：为模仿的一个提高的数字模型二维不可压缩粘滞有弄歪的免费表面的流动被报导。数字模拟彻底地被执行CIP(抑制插值侧面)基于方法，它在纸被描述。捕获计划的一个更精确的接口，VOF/WLIC计划(VOF：Volume-of-Fluid；WLIC：称的线接口计算)，作为捕获方法的接口被采用。估计发达算法和它的通用性，测试问题的一种选择被检验，即方形的波浪繁殖，Zalesaks僵硬身体旋转，有或没有障碍的水坝碎问题，在在极端波浪和漂浮的身体之间的一辆激动的波浪坦克和相互作用的波浪sloshing。当数字结果与相比时，优秀协议被获得可得到分析，试验性，并且另外的数字结果。这些例子证明在捕获的免费表面的VOF/WLIC计划的使用做更好的结果并且另外建议基于CIP的模型能够预言怪胎波浪相关的现象。

简介：Thepenetrationdepthoftorpedoanchorintwo-layeredsoilbedwasexperimentallyinvestigated.Atotalof177experimentaldatawereobtainedinlaboratorybyvaryingtheundrainedshearstrengthofthetwo-layeredsoilandthethicknessofthetopsoillayer.Thegeometricparametersoftheanchorandthesoilproperties(theliquidlimit,plasticlimit,specificgravity,undrainedshearstrength,density,andwatercontent)weremeasured.Basedontheenergyanalysisandpresenttestdata,anempiricalformulatopredictthepenetrationdepthoftorpedoanchorintwo-layeredsoilbedwasproposed.Theproposedformulawasextensivelyvalidatedbylaboratoryandfielddataofpreviousresearchers.Theresultswereingoodagreementwiththoseobtainedfortwo-layeredandsingle-layeredsoilbed.Finally,asensitivityanalysisontheparametersintheformulawasperformed.

简介：AtestrigisbuilttomodelthedynamicresponseofsubmarinepipelineswithanunderwatershakingtableintheStateKeyLaboratoryofCoastalandOffshoreEngineering,DalianUniversityofTechnology,China.Modeltestsarecarriedouttoconsidertheeffectsofexcitingwavedirectionsandtypes.Basedontheexperimentalresults,twohydrodynamicforcemodelsderivedfromMorisonequationandWakemodelarepresentedrespectively.Byuseofhydrodynamicforcemodelssuitableforfreespanningsubmarinepipelinesunderearthquakes,discretizedequationsofmotionareobtainedandfiniteelementmodelsareestablishedtoanalyzedynamicresponseoffreespanningsubmarinepipelinesubjectedtomulti-supportseismicexcitations.ThecomparisonofnumericalresultswithexperimentalresultsshowsthattheimprovedMorisonandWakehydrodynamicforcemodelscouldsatisfactorilypredictdynamicresponseonthefreespanningsubmarinepipelinessubjectedtoearthquakes.

简介：民用的结构的完全的结构的描述的生存能力被探索并且讨论。特别地，鉴定形式(即自然频率，抑制比率和形式的形状)并且物理性质(即质量和僵硬)用仅仅结构，免费腐烂反应被学习。完成这，从免费颤动反应的形式的分析仅仅(MAFVRO)并且集体修正(公里)方法论与小浪一起订婚为最佳的信号处理和形式的重建基于技术。方法论被评估用模仿并且试验性的数据。模仿的数据从5故事的一个简单有弹性的模型被提取砍造并且从RC的一个更现实主义的非线性的模型装裱结构。试验性的数据从放大的2故事的饮料表格测试被聚集砍造。当识别性质的质量被显示被频率乐队和最佳的形式的形状重建的足够的选择管理，为从数据的重建过程的指南被建议。而且在结构经历了损坏的情况中，建议鉴定计划能也被申请对结构的健康的初步的评价。

简介：Ahigher-efficientthree-dimensionalnon-hydrostaticmodelisdevelopedtosimulatesmallamplitudefreesurfaceflowsbasedonastaggeredunstructuredgrid.Inthismodel,afractionalstepalgorithmisadoptedtosolvetheNavier-Stokesequationsintwomajorsteps.Atop-layerpressuremethodisproposedtominimizethenumberofverticallayersandsubsequentlythecomputationalcost.Threeclassicalexamplesofsmallamplitudefreesurfaceflowsareusedtodemonstratethecapabilityandefficiencyofthemodel.Thesatisfactoryresultsdemonstratedthecapabilityandefficiencyofmodellingarangeofsmallamplitudefreesurfaceflowswithonlyasmallnumberofverticallayers.

简介：DuringthegreatWenchuanearthquake,about460permanentfree-fieldstationsinNationalStrongMotionObservationNetworkSystem(NSMONS)ofChinacapturedthemainshockaccelerationrecords.Theserecordscanbeappliedtositeeffectanalyses,andthenthesiteclassificationofthosepermanentstationscanbecarriedoutfirstly,whichwillservedasthefundamentalinformationforfurtherresearch.Inthispaper,thesiteofnear-faultstationsisclassifiedbyhorizontal-to-verticalspectralratio(HVSR)methodaccordingtothesiteclassdescriptionofJapanearthquakeresistantdesigncodeandresponsespectralshapes(RSS)methodfollowingthesiteclassdescriptionofthe1997UniformBuildingCode(UBC)provisions.Thenbasedonthedetailedboreholedataofthosefree-fieldstations,theequivalentshearwavevelocityandoverburdenthicknessarecalculatedandthesiteclassificationsaregivenbyChinesecodeforseismicdesignofbuildings.Furthermore,forthestationshavingsuccessfulmicrotremortestdata,thesitedominantperiodsarecomputedtoverifytheresultsofsiteclassification.Finally,combinedwithalltheaboveresults,therecommendedsiteclassesofnear-faultpermanentfree-fieldstationsaregiven.

简介：Ｔｈｅｅｆｆｅｃｔｏｆｍａｇｎｅｔｉｃｆｉｅｌｄ－ｆｒｅｅｓｐａｃｅｏｎｔｈｅａｃｏｕｓｔｉｃｂｅｈａｖｉｏｒｏｆｂｕｄｇｅｒｉｇａｒｓ（Ｍｅ－ｌｏｐｓｉｔｔａｃｕｓｕｎｄｕｌａｆｕｓ）ＪＩＮ－ＣＨＡＮＧＪＩＡＮＧ１）（蒋锦昌），ＨＡＩ－ＱＩＡＮＧＪ...

简介：ThemodeserialsoftheEarth'sfreeoscillationprovidesomeimportantinformationontheEarth'sdeepstructureandsuperconductinggravimeters(SG)caninvestigatethephenomenaoftheEarth'sfreeoscillationswithhighaccuracy.ThegreatSumatra-AndamanearthquakefullyexcitedtheEarth'sfreeoscillationsandthesesignalswereperfectlyrecordedbyfivesuperconductinggravimetersintheglobe.Afterthepre-treatmentandspectralanalysisontheSGobservationdata,weobtainedtheexperimentedmodeserialsoftheEarth'sfreeoscillationsconsistingof147modeswithGGPstationdata.TheseobservedmodeswerethemselvessomenewimportantdataforthestudyoftheEarth'sdeepstructure.Onthebasisofthediscussionsonsomecheckedinner-core-sensitivemodes,wedistinguishedthreelayersfromtheinnercore,andtheboundaryoftheupperlayerwascompatiblewiththeformerlyknowntransitionzoneintheinnercorebasedonseismicbodywavesandsupportedthattherewerethehemisphericalvariationandverylowershearvelocityzoneinthelowerinnercore.

简介：Inthispaper,wetooktheleadinstudyingonspecificityofthemicrosatelliteDNAlociandapplicabilityofmicrosatelliteDNAprimersinprotozoa.Inordertostudycharactersofmicrosatellitesinfree-livingprotozoa,eightmicrosatellitelociprimersdevelopedfromTrypanosomacruzi(MCLE01,SCLE10,MCLE08,SCLE11,MCLF10,MCLG10,MCL03,MCL05)wereemployedtoamplifymicrosatelliteinfourfree-livingprotozoa,includingBododesignis,EuglenagracilisFACHB848,ParameciumbruziseandTetrahymenathermophilaBF1.IntheamplificationsystemsofP.bruzise,fourloci(SCLE10,SCLE11,MCLF10,MCL03)wereamplifiedsuccessfully,andfouramplificationfragmentswereinpropersize.IngenomeofE.gracilisFACHB848,fiveofeightprimersbroughtfiveclearamplificationbands.InB.designis,three(No.4,5and7)ofeightlociproducedclearandsharpproductswithoutstutterbands,whereasnobandsappearedinT.thermophilaBF1.Further,eight300-500bpamplificationfragmentswereclonedandsequenced.Nevertheless,allsequencedproductsdidnotcontaincorrespondingmicrosatellitesequence,althoughBodoisinthesameorderandhasthenearestphylogeneticrelationwithTrypanosomaamongthesefourspecies.Thus,themicrosatelliteDNAprimerscannotbeappliedamongorderormorefartaxa,andthespecificityofmicrosatelliteDNAisveryhighinprotozoa.TheresultsofthisstudywillcontributetoourunderstandingofmicrosatelliteDNAinprotozoa.

简介：

简介：AnovelVOF-typevolume-trackingmethodfortwo-dimensionalfree-surfaceflowsbasedontheunstructuredtriangularmeshispresented.Owingtotheinherentmeritoftheunstructuredtriangularmeshinfittingcurvedboundaries,thismethodcanhandlethefree-surfaceproblemswithcomplexgeometriesaccuratelyanddirectly,withoutintroducinganycomplicatedboundarytreatmentorartificialdiffusion.ThemethodsolvesthevolumetransportequationgeometricallythroughtheModifiedLagrangian-EulerianRe-map(MLER)method,whichisappliedtoadvectivefluidvolumes.Moreover,thePLICmethodisadoptedtogiveasecond-orderreconstructedinterfaceapproximation.Tovalidatethismethod,twoadvectiontestswereperformedfortheestablishmentoftheaccuracyandconvergencerateofthesolutions.Numericalresultsforthesecomplextestsprovideconvincingevidencefortheexcellentsolutionqualityandfidelityofthemethod.

简介：Thevibrationresponseofafree-hangingflexibleriserinducedbyinternalgas-liquidslugflowwasstudiedexperimentallyinasmall-diametertubemodelbasedonFroudenumbercriterion.Theflowregimeinacurvedrisermodelandtheresponsedisplacementsoftheriserweresimultaneouslyrecordedbyhighspeedcameras.Thegassuperficialvelocityrangesfrom0.1m/sto0.6m/swhiletheliquidsuperficialvelocityfrom0.06m/sto0.3m/s.Severesluggingtype3,unstableoscillationflowandrelativelystableslugflowwereobservedintheconsideredflowrates.Severesluggingtype3characterizedbyprematuregaspenetrationoccursatrelativelylowflowrates.Boththecycletimeandsluglengthbecomeshorterasthegasflowrateincreases.Thepressureattheriserbaseundergoesalongerperiodandlargeramplitudeoffluctuationascomparedwiththeothertwoflowregimes.Additionally,severesluggingleadstothemostvigorousin-planevibration.However,theresponsesintheverticalandhorizontaldirectionsarenotsynchronized.Theverticalvibrationisdominatedbythesecondmodewhilethehorizontalvibrationisdominatedbythefirstmode.Similartothevortex-inducedvibration,threebranchesareidentifiedasinitialbranch,build-upbranchanddescendingbranchfortheresponseversusthemixturevelocityofgas-liquidflow.