简介：在现在的学习，为129碘(129我)在铁锰合金，外壳被开发并且129iodine/127碘(129I/127我)在铁锰合金外壳中的比率被加速器团spectrometry(AMS)测量。发达方法被使用分析129I/127我在从中间和平的海洋收集的二铁锰合金外壳MP5D44和CXD08-1的比率。结果显示出那129I/127我在MP5D44和CXD08-1外壳中的比率从7湩敧变化吗？？

简介：-BasedontheextendedMorisonEquationandmodeltests,thein-lineforcesonsmallsquarecylinderscausedbywaves(regularandirregular)andcurrentsareanalyzedindetailinthispaper.ThehydrodynamiccoefficientCDandCurelatedtoKCnumberandtheeffectofdirectionofwaveincidencearealsogiven,whichcanbeusedinengineeringpractice.

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简介：AbriefreviewismadeonthetheoryoftheLagrangianresidualcirculationandinter-tidaltransportsinaconvectivelyweaklynonlinearsystem.Inthereviewtheemphasisisputonthesystematicaldevelopmentofthetheoryanditsweaknessofconvectivelyweaklynonlinearapproximation.ThefundamentalsofaLagrangiantidally-averagedtheoryoncirculationwithinter-tidaltransportprocesseshavebeenproposedforageneralnonlinearcoastal/estuarinesystem.TheLagrangianresidualvelocityisstrictlydefined,andithasbeenverifiedtobeabletoembodythevelocityfieldofcirculation.Anewconceptoftheconcentrationforinter-tidaltransportprocessesispresented.Theconcentrationdescribingtheinter-tidaltransportprocessesshouldbea'Lagrangianinter-tidalconcentration'definedandnamed,butnottheEuleriantidally-averagedconcentrationusedtraditionally.Thecirculationdescribedherecontainsasetofinfinitetemporal-spatialfieldsofvelocity/concentration,eachofwhichcorrespondstoaspecificvalueoftidalphasesvaryingcontinuouslyoveronetidalcycle.Whentheconvectivelyweaklynonlinearcondition(withasmallerorderofeddydiffusionandsources)isapproximatelysatisfied,asetofinfinitetemporal-spatialfieldsofvelocity/concentrationcanbereducedtoasingleone:themasstransportvelocity/theEuleriantidallyaveragedconcentrationasexhibitedtraditionally.

简介：海水热力学的二个重要非线性的性质连接了到水密度，cabbeling和弹性(压缩的可能性)的变化，被讨论。埃迪散开和移流在密度导致变化；作为结果，系统的重力的势能被改变。因此，cabbeling和弹性玩在侧面的旋涡散开和移流的energetics给角色调音。垂直旋涡散开是处于全球海洋的机械精力平衡的关键元素之一。垂直旋涡散开能概念上被分开成二步：激动人心并且subscale散开。垂直旋涡向上、温暖/轻的激动人心的推冷/稠密水向下流水；因此，重力的势能被增加。在第二步期间，来自不同地方的水群众通过subscale混合散开，和水密度由于cabbeling被增加。使用WOA01气候学并且假定垂直旋涡扩散性等于2慭楲敮瀠慨潥桰瑹獥?有洠牡湩?桲摯灯票整?ㄠ?挠汨牯灯票整?的经常的价值?挠祲瑰灯票整??栠灡潴桰瑹獥?湡?‵汧畡潣桰瑹獥眠牥?敳畱湥散?眠?獵摥愠朠湥?湡污獹獩洠瑥潨?潴愠慮祬敺琠敨倠?朠湥?敳畱湥散?湩愠杬敡愠摮挠湯楦浲琠敨攠楸瑳湥散漠?桴???敧敮椠?桴?牴湡'諛L瑰浯捩猠煥敵据湩?慤慴漠?桒摯灯票慴愠摮传档潲桰瑹吗？

简介：TostudytheTaiwanStrait(TS),anunusualseaarea,thenumericalmodelinmarginalseasofChinaisusedtosimulateandanalyzethetidalwavemotioninthestrait.ThenumericalmodelingexperimentsreproducetheamphidromicsystemoftheM2tideinthesouthendoftheTaiwanstrait,andconsequentlyconfirmtheexistenceofthedegenerateamphidromicsystem.Onthisbasis,furtherdiscussionisconductedontheM2systemanditsformationmechanism.ItcanbeconcludedthatthetidalwavesoftheTSisconsistedoftheprogressingwavefromthenorthentranceandthedegenerateamphidromicsystemfromthesouthentrance,inwhichtheprogressingwavefromthenorthentrancedominatesthetidalwavemotioninthestrait.Exceptfortheconvergenteffectcausedbythelandformandboundary,thedegenerateamphidromicsystemproducedinthesouthofthestraitisanotherimportantfactorforthefollowingphenomena:thelargetidalrangeinthemiddleofthestrait,theconcentrativezoneofco-amplitudeandco-phaselineinthesouthofthestrait.ThedegenerateamphidromicsystemismainlyproducedbytheincidentPacificOceantidalwavefromtheLuzonstraitandtheactionbytheshorelineandlandform.Thepositionoftheamphidromicpointiscompelledtomovetowardsouthwestuntildegeneratingbythepowerfulprogressingwavefromthenorthentrance.

简介：Toobtainthemaximumangiotensin-Iconvertingenzyme(ACE)inhibitoryactivity,theproteinhydrolysisconditionsofthejellyfishRhopilemahispidumwereoptimizedusingresponsesurfacemethodology(RSM).TrypsinwasselectedtoproduceR.hispidumproteinhydrolysates(RPH)withACEinhibitoryactivity.TheoptimalparametersforproducingproteinhydrolysateswiththehighestACEinhibitoryactivitywereasfollows:hydrolysistime5h,hydrolysistemperature50℃,andtheenzyme-to-substrateratio6%.Undertheseconditions,theACEinhibitoryrateofRPHcouldreach64.28%±5.72%.Inaddition,RPHcontainedhighlevelsofGly,Glu,Pro,Ala,AspandArg,withamolecularweightdistributionrangeof0.32–6.84kDa.ThefollowingthreenovelACEinhibitorypeptideswereisolatedandidentified:Ile-Gly-Glu-Thr-Gly-Pro,Gly-Ala-Thr-Gly-Pro-Ala-Gly-Tyr-ValandGly-Ala-Phe-Gly-Pro-Gly-Gly-Leu-Val-Gly-Arg-Pro.TheIC50valuesoftheACEinhibitoryactivityofthesethreepurifiedpeptideswere19.07,27.42and31.26μmolL^-1,respectively.TheseresultssuggestedthatproteinsandpeptidesisolatedfromR.hispidumcouldbeutilizedasantihypertensivefunctionalfoodsources.

简介：Asimplethree-dimensionaltidalmodelisusedtoexaminetheM2tidalcurrentdistributioninanortheasternpartoftheEastChinaSea,especiallytheverticalvariationofthecurrentintheregion.ComputedM2currentiscomparedwithobservationsavailableandfoundtobeingoodagreement.Mainfeaturesofthecalculatingmethodinthisstudyare:(1)Verticalvariationofthetidalcurrentistakenasafunetionofthedepth-meanvelocity:(2)themethodisapplicabletoavarietyoftheverticaleddyviscosities;(3)ithasafineverticalresolution,especiallyneartheseabootom.So,thismethodnotonlyenablesustogetasteadystatesolutioneasilybutalsodepictseffectsofthefrictionontheverticalvariationofthecurrentmuchbetter.

简介：根据对新型KSS31M海洋重力仪一个多月的室内静态观测记录分析,得到的结果是:该台重力仪的静掉格呈线性,掉格率约为1mGal/month,静态观测分辨率为0.01mGal.显示该型重力仪静态漂移极小,灵敏度高,抗干扰能力强.

简介：WhiletheAntarcticSlopeCurrent(ASC)hasbeenintensivelystudiedfortheEastAntarcticaslopeareaandtheWeddellSea,itsfateinthewesternAntarcticPeninsula(WAP)regionremainsmuchlessknown.DatafromtwocruisesconductedneartheSouthShetlandIslands(SSIs)andtheElephantIsland(EI),oneinaustralsummerof2004andoneinaustralwinterof2006,wereanalyzedtoprovideabroadpictureofthecirculationpatternoverthecontinentalslopeofthesurveyedarea,andaninsightintothedynamicalbalanceofthecirculation.Theresultsindicatethatsouthwestwardcurrentsarepresentovertheupperslopeinthestudyarea,indicatingtheASCintheWAPregion.NeartheShackletonGap(SG)northoftheEI,thesouthwestwardslopecurrentsneartheshelfbreakarecharacterizedbyawatermasscolderandfresherthantheambientwater,whichproducescross-slopedensitygradientsandthenverticalshearofthealong-slope(oralong-isobath)velocity.Theverticalshearisassociatedwithareversalofthealong-slopecurrentfromnortheastwardatsurfacetosouthwestwardindeeperlayers,oradepth-intensificationofthesouthwestwardslopecurrents.ThewatermasswithtemperatureandsalinitycharacteristicssimilartotheobservedcoldandfreshwaterisalsorevealedonthesouthernslopeoftheScotiaSea,suggestingthatthiscoldandfreshwaterisoriginatedfromtheScotiaSeaslopeandflowssouthwestwardthroughtheSG.OvertheshelfnorthoftheSSIs,thecoldandfreshwatermassisalsoobservedandoriginatesmainlyfromtheBransfieldStrait.Inthisarea,verticalstructureofthesouthwestwardslopecurrentsisassociatedwiththeonshoreintrusionoftheupperCircumpolarDeepWaterthatcreatescross-slopedensitygradients.

简介：ViathevaluableopportunityoftheThreeGorgesReservoir(TGR)135-mfillinginJune2003,theYangtzedischargeandsuspendedsedimentconcentration(SSC)enteringtheestuaryduringtheperiodfrom15Mayto15July2003wereanalyzedtoexaminetheinstanteffectsofthefillingonthem.TheYangtzedischargeandSSCenteringtheestuaryintheperiodsbefore,duringandafterthefillingclearlyindicatedthreephases:1)thepre-storagephasecharacterizedbynaturalconditions,inwhichtheSSCincreasedwithincreasingwaterdischarge;2)thestoragephase,duringwhichtheSSCdecreaseddramaticallywithdecreasingwaterdischarge;and3)thepost-storagephase,duringwhichboththeSSCandwaterdischargeremainedatrelativelylowlevelsfirstuntiltheendofJune,thentheSSCincreasedgraduallywithincreasingwaterdischarge.ItseemsthatthetimesfortheinstanteffectsofthedecreasingdischargedownstreamfromtheupperYangtzeontheYangtzedischargeandSSCenteringtheestuaryduetotheTGR135-mfillingtotakeplacewereabout5dand1drespectively,whilebothwereabout18dforthoseoftheincreasingdischarge.Thisprobablyreflectsthebufferingandresultantlyhysteresisofthe1800-kmstretchfromtheupperYangtzetotheestuary.TheresultsarehelpfulforscientificandhydrologicalinvestigationoftheYangtzemainstreamdownstreamfromtheTGRDamandoftheestuarineandadjacentcoastalwaters.

简介：Inthisstudy,threecDNAsequencescorrespondingtocytochromeP450C17(CYP17I),3β-hydroxysteroiddehydrogenase(3β-HSD)andandrogenreceptor(AR)wereisolatedfromspottedseabass(Lateolabraxmaculatus).ThemRNAabundancesofCYP17Iand3β-HSDincreasedfromstageⅡtostageⅤwithasignificantincreaseatstageⅤ,andthehighestabundanceofARmRNAwasdetectedatstageⅢintesticulardevelopmentcycle.CYP17I,3β-HSDandARtranscriptswereobviouslyabundantinsteroidogenesistissuessuchastestis,brain,headkidneyamongothers.StrongandpositivesignalswereobservedmainlyininterstitialcellregionsofL.maculatustestisasweremeasuredwithinsituhybridizationmethod.SignificantincreasesofCYP17Iand3β-HSDtranscriptsweredetectedafter12–48hhCG(humanchorionicgonadotropin)andGnRHa(gonadotropin-releasinghormoneanalogue)treatments.However,anoppositerelationshipwasfoundforARintestisatthesametime.Inaddition,decreasingtrendsofCYP17Iand3β-HSDmRNAwereobservedintestisofL.maculatusinfreshwatergroup(FW)fromday2today6,andmRNAabundanceofARincreasedinbrackishwater(BW)groupfromday4today8.Thesefindingsrevealedthatthesethreesteroidsynthesisgenesareimportfortesticulardevelopment,hormoneandsalinitytreatment,andprovidedalsoaninsightintothemechanismofreproductiveendocrineofL.maculatus.

简介：Dongsha区域是为在华南海(SCS)的煤气的水合物探索的最有希望的目标区域之一。毛孔水地球化学的学习在中国煤气的水合物探索起了一个关键作用。Br/Cl，I/Cl和37毛孔水里的Cl在在低温度沉积环境跟踪煤气的水合物出现，毛孔液体的化学进化和水/岩石相互作用这里被使用。样品在2004在Dongsha区域从地点HD255PC和HD309PC被收集。在地点HD255PC，我们发现了提高的Br/Cl，I/Cl并且那么减少了在4-5m的深度的4/Cl，可能从煤气的水合物出现产生的旁边地移植的液体暗示。37Clis-0.54到+0.96，和积极37在4-5m间隔的Cl应该与在35Cl和37Cl。在地点HD309PC，旁边地移植的液体也在3-4m的深度被发现，与Br/Cltwotimes到，显示海水和减少的I/Cl，液体没有与煤气的水合物的关系。在这个地点，氯同位素的作文改变from-0.7到+1.9。额外的高Br/Cl可能与深产生的液体联系。在更高的温度和压力，液体的Br/Cl在含水的硅酸盐形成期间被提高，当时积极37Cl也与一样的机制被联系。