简介：Atpresent,thereexisttwomethodsusedtorecoverthebathymetryfromaltimeterdata,i.e.thedeterministicmethodandthestochasticmethod.Inthispaper,theprinciplesofthetwomethodsareintroducedfirst.Thenaccordingtothetheoryofleast-squarecollocation,amodifiedstatisticalmodelforrecoveringbathymetryfromaltimeterdataisproposed.ThenewmodelhasbeenusedforcomputingtheoceandepthintheSouthChinaSeafromaltimeter-derivedgravityanomalies.Finallythepredicteddepthsarecomparedwiththeship-bornedepth.Itshowsthattheyagreewitheachotherverywell.

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简介：Inthispaper,theunderwatervehicle,slingandthemothershipareconsideredasasinglede-greeoffreedomsystemconnectedbyaspring.Throughtheanalysisofthissystem,aphysicalmodelises-tablished,whichdescribesthemotionofthevehiclecausedbytheshipmotionandwavemotion.Furthermore,amathematicalmodelbasedonthisphysicalmodelisobtained,andanumericalsolutionprogramismade.Asanexample,apracticallaunchandrecoverysystemforanunderwaterrobotiscalcu-latedbyuseoftheprogram.andthemotiontrackoftherobotisobtained.

简介：木头数据的遥远的传播是为服务公司的一个迫切问题。这里的日志数据的遥远的传播技术多好与CifNet在联合指传播解决方案自动化减少回转时间的日志数据的传播，存储，管理，和检索的数据管理系统。实现断点传播和错误恢复并且保证木头数据传播的有效性和可靠性是一种应用数字签名技术。

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简介：Noroviruses(NoVs)arewidespreadcausesofnonbacterialgastroenteritis.OutbreaksofNoVscauseddiseasesarecommonlyascribedtotheconsumptionofcontaminatedshellfish.TheconcentrationandRNAextractionofNoVsarecrucialstepsofdetectingNoVsinshellfish.Thisstudyaimedtoselectasimple,rapidandhighlyefficientrecoverymethodofNoVsdetectionwithreal-timeRT-PCR.FourmethodsofrecoveringGI.3andGII.4NoVsfromspikeddigestivetissuesofoystersandclams,respectively,werecompared,ofthem,themethodinvolvingproteinaseKandPEG8000wasfoundthemostefficient.Withthismethod,9.3%and13.1%ofGI.3andGII.4NoVswererecoveredfromoystersand9.6%and12.3%ofGI.3andGII.4NoVswererecoveredfromclams,respectively.ThismethodwasfurtherusedtodetectNoVsin84oysters(Crassostreagigas)and86clams(Ruditapesphilippinarum)collectedfrom10coastalcitiesinChinafromJan.2011toFeb.2012.TheNoVsisolationrateswere10.47%ofclams(9/86)and7.14%ofoysters(6/84).AllthedetectedNoVsbelongedtogenotypeGII.TheNoVsrecoverymethodselectedisefficientforNoVsdetectioninoystersandclams.

简介：Eco赔偿是为外部费用的成为主观的一台环境经济仪器。把农田还给湖是在中国的长江山谷恢复沼泽地生态系统功能的重要部分之一。湖恢复的工程是否能是成功的，取决于赔偿到失去了他们的原来的好处并且由把农田还给湖贡献了沼泽地生态系统恢复的农民。瞄准东廷·莱克，的沼泽地恢复在这个区域的湖恢复和洪水控制的节目的实际实现被人口再定居的繁重的任务质问了，因此到达作为上面建议的学术目的，是为案例研究的一个理想的区域。基于领域调查和试验，这研究评估了重新安居的农民的利益损失，生态系统服务功能的增加的值由沼泽地恢复引起了，并且而且，为重定位的农民的eco赔偿的值由考虑农民赔偿呼吁的联合是计算的。为在东廷·莱克区域的重定位的农民的eco赔偿的值每由沼泽地生态系统恢复上的效果的合成分析的家庭是6084.5元。而且，这篇文章作为一个盒子拿了东廷·莱克区域由把农田还给湖学习并且探索eco赔偿的基本问题，那是谁应该付钱，谁应该被付，支付是多少并且什么支付工具是，它寻求了沼泽地恢复eco赔偿的机制并且为生态的恢复推动了人们热情。

简介：假设那床材料负担等于沉积运输能力通常是可接受的，如果在床和流动之间的交换即刻地发生。为非平衡沉积运输过程，然而，有空间、时间的延期效果。这为水库沉积过程是特别真的。恢复因素是为非平衡沉积运输的一个系数。恢复因素的决心能试验性地或数字地被获得。在以前的文学的恢复因素的价值上没有一致。有半的数字模拟--二个维的沉积运输模型，GSTARS4，为以前的研究建议的恢复因素的决心用各种各样的方法在这研究被进行。一座水库的模仿的结果几何变化对恢复因素的选择敏感。恢复因素作为沉积尺寸的功能提供了最合理的结果，这被发现。在恢复因素和沉积尺寸之间的一种功能的关系被比较模仿并且测量的水库决定几何变化。粗糙的沉积有恢复因素的小价值。

简介：1.ObjectiveNaturalgashydratesareconsideredasapotentialalternativefuelresourcetopetroleumandgas(ChongZRetal.,2016),whichcanbeexploitedbymeansofdepressurization,thermalmethod,inhibitorinjection,etc.Forthethermalmethod,gashydratesaredecomposedintowaterandmethanewhenthereservoirisheatedtoabovetheequilibriumtemperatureofgashydrate(LiXetal.,2016).However,thethermalrecoverymethodneedsagreatdealofheat,andthusthefeasibilityofeconomicexploitationisreduced.

简介：ThispaperpresentstherheologicalbehaviourofsupercriticalCO_2(sCO_2)foamatreservoirconditionsof1500psiand80°C.DifferentcommercialsurfactantswerescreenedandutilizedinordertogenerateafairlystableCO_2foam.Mixedsurfactantsystemwasalsointroducedtogeneratestrongfoam.Foamrheologywasstudiedforsomespecificfoamqualitiesusingahighpressurehightemperature(HPHT)foamlooprheometer.Atypicalshearthinningbehaviourofthefoamwasobservedandasignificantincreaseinthefoamviscositywasnoticedwiththeincreaseoffoamqualityuntil85%.Adesiredhighapparentviscositywithcoarsetexturewasfoundat85%foamquality.Foamvisualizationabove85%showedanunstablefoamduetoextremelythinlamellawhichcollapsedandtotallydisappearedinthelooprheometer.Below5_2%,anon-homogenousandunstablefoamwasfoundhavinglowviscositywithsomeliquidaccumulationatthebottomofthecirculationloop.ThisresearchhasdemonstratedrheologyofsCO_2foamsatdifferentqualitiesatHPHTtoobtainoptimalfoamqualityregionforimmiscibleCO_2foamco-injectionprocess.

简介：TheAndamanandNicobarIslandsareoneoftheUnionTerritoriesofIndia,locatedintheeasternpartoftheBayofBengal.In2010summer,theincrementinseasurfacewatertemperature(upto34℃)resultedinthebleachingofabout74%to77%ofcoralsintheSouthAndaman.Duringthisevent,coralspeciessuchasAcroporacerealis,A.humilis,Montiporasp.,Faviapallida,Diploastreasp.,Gonioporasp.Fungiaconcinna,Gardineroseriessp.,Poritessp.,FavitesabditaandLobophylliarobustawereseverelyaffected.ThisstudyistoassesstherecoverystatusofthereefecosystembyestimatingthepercentageofLiveCoralcover,Bleachedcoralcover,Deadcoralwithalgae,Rubble,Sandyflat,Algalassemblageandotherassociatedorganisms.Thesedimentationrate(mgcm-2d-1)andcoralcoverage(%)wereassessedduringthisstudyperiod.Theaveragesedimentationratewasrangedbetween0.27and0.89mgcm-2d-1.Theobservedpostbleachingrecoveryofcoralcoverwas21.1%atPortBlairBayand13.29%atHavelockIsland.Themortalityrateofcoralcoverduetothisbleachingwasestimatedas2.05%atPortBlairBayand9.82%atHavelockIsland.Oncetheseawatertemperatureresumedbacktothenormalcondition,mostofthecoralswerefoundrecovered.

简介：Afteraslowrecoveryfromtheend-PermianextinctionduringtheEarlyTriassicandrapidradiationintheMiddleTriassic,evolutionoforganismsreachedanewpeakphaseintheLateTriassic.TheGuanlingBiotafromtheWayaoMember(conodontParagondolellapolygnathiformisZone),FalangFormation,Xinpu,GuanlingCounty,GuizhouProvince,southwesternChinacorrespondstothispeakthatmarksthefullrecoveryfromtheend-Permianextinctionofmarineecosystems.Thebiotaisofhighdiversity,containingwellpreservedandcompletelyarticulatedskeletonsofvertebratescomprisingmarinereptiles,fishes,andinvertebratesincludingcrinoids,ammonites,bivalves,andotherfossils,andisoneofthebestexamplesofmarineecosystemrecordsinlifehistory.Thefossilmarinereptilesandcrinoidsaremostsignificantinthisbiota,especiallythemarinereptiles,whichprovideanimportantlinkbetweentheTriassicPacificandTethys,andbetweenTriassicbasalformsandtheJurassic-Cretaceousmarinetoppredators.Themostremarkablefossilsarethelargecompletelyarticulatedichthyosaurskeletonsuptoandmorethan10m,andthefirstrecordedthalattosaursandplacodontsinChina.Followingourreview,ofthe17namedreptiliantaxatheeightlistedhereareconsideredtobevalid:threeichthyosaurs(QianichthyosauruszhouiLi,1999;GuizhouichthyosaurustangaeCaoandLuoinYinetal.,2000,GuanlingsaurusliangaeYininYinetal.,2000),threethalattosaurs(AnshunsaurushuangguoshuensisLiu,1999,XinpusaurussuniYininYinetal.,2000,XinpusauruskohiJiangetal.,2004),andtwoplacodonts(SinocyamodusxinpuensisLi,2000,PsephochelyspolyosteodermaLiandRieppel,2002).MixosaurusguanlingensisCaoinYinetal.,2000mightbeajuniorsynonymofQianichthyosauruszhouiLi,1999,andCymbospondylusasiaticusLiandYou,2002andPanjiangsaurusepicharisChenandCheng,2003mightbejuniorsynonymsofGuizhouichthyosaurustangaeCaoandLuoinYinetal.,2000.Itneedstore-describethehol

简介：Swidden农业是在山区的大陆东南亚洲(MMSEA)的一个古老、普遍却争论的耕作惯例。在北老挝的高地，swidden农业几个世纪仍然是一种占优势的人主导的陆地使用类型。然而，自从mid-1990s，swidden系统经历了戏剧的转变。在swidden耕作的变化上的争论被连接到全球性关键的问题，例如陆地使用/盖住变化(LUCC)，生物多样性损失和环境降级。自从从采伐森林和福雷斯特降级(整顿)减少排出物的实现，许多注意在热带对swidden农业全国地并且国际性地被给予了。然而，swidden农业的明确地空间的特征和在宏观的规模的这些转变的后果的知识是令人惊讶地少见的。在这研究，在在1990，2002，和2011的北老挝的swidden使用和休闲森林恢复的紧张借助于Landsat题目的Mapper(TM)被描出并且提高了题目的Mapper加(ETM+)用一条决定树分类途径的形象(30m)，在swidden农业由时间空间的变化的分析列在后面。下次，年度连续TM/ETM+图象在20002010期间被用来描出燃烧并且收割的阶段的动力学。随后，在2000识别的烧的象素在下列年(20012011)里与他们的对应物分别地被作比较用时间系列调查时间的趋势，陆地使用频率，和swidden周期基于Landsat的规范的差别植被索引(NDVI)数据。最后，当swidden周期从1～11年变化了，休闲植被恢复过程被学习。结果显示出那：(1)从1990～2011，swidden农业的区域增加了54.98%，从1.54？