学科分类
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102 个结果
  • 简介:日本的摩托车集世界制造技术之大成,如今算是霸主,无论正规渠道还是水货,它们都是与我们最贴近的国外车,且日本摩托车早在上个世纪70年代就已经在中国成立了合资企业,中国老百姓对它们一样耳熟能详。与其他国家的产品相比,大家会明显地感觉到这个国家的产品特性鲜明,然而哪里不回,为何不同呢?

  • 标签: 历史 文化 岛国 产品特性 制造技术 合资企业
  • 简介:沿海的泻湖存款在仪器的记录和历史的文档以前为过去热带的气旋的大小和频率提供证据。在现在的学习,我们试图分析为北华南海区域包含台风信息的沉积记录。为这个目的,沉积核心在东南的海南岛从二个沿海的泻湖被收集,并且在实验室被分析关于谷物尺寸,器官、无机的碳内容,和免职率导出数据集合。谷物尺寸和器官无机的碳数据被用来提出台风事件的代理。免职评价,用CRS210

  • 标签: 台风活动 沉积记录 东南部 海南岛 泻湖 沿海
  • 简介:台风Haitang(0505)的轨道,通过了台湾岛并且再登陆了,被使用非静水力学的mesoscale成功地模仿了大气的模型MM5。Itsstructure在登陆阶段上被分析,并且在那里存在,被发现好在thetyphoon之间的关系反常移动轨道和它的不对称现象结构。thetyphoonHaitang上的台湾岛的地面的效果,它让它在登陆前旋转并且介绍“V”打反常动人的轨道inTaiwan海峡,也被模仿了。进一步的分析证明台湾岛的地面不onlydirectly影响移动轨道的台风,而且由影响它的asymmetricstructure改变台风轨道。因此,台风不对称的结构和在反常旋转的台湾岛togetherresults的地面的效果追踪。台湾岛的地面趋于增加台风的SW-NEasymmetric结构并且在从台湾海峡进入并且移动前在台风Haitang的thelandfall过程期间在SE-NW不对称的结构上有不同效果。

  • 标签: 台风 不对称结构 移动轨迹 地形
  • 简介:Fromtheperspectiveoftourismcompetitiveness,thepapertakes12islandcountiesofChinaastheresearchobject,andappliesthemethodoffactoranalysistostudytheircompetitiveness.TheresultshowsthatPutuoandDinghaiaremorecompetitivewhilePingtanandNan’aoarelesscompetitive.Finally,the12islandcountiesaredividedintofourstyles:first-classcompetitivecounty(Putuo),seond-classcompetitivecounties(Dinghai,Yuhuan),third-classcompetitivecounties(Chongming,Daishan,Changdao,ChanghaiandShengsi),fourth-classcompetitivecounties(Dongshan,Dongtou,PingtanandNan’ao)byclusteranalysis.Theclassificationofislandcountiesistocleartheirrelativeposition,thentopromotetheirdevelopment.

  • 标签: 因子分析法 聚类分析 竞争力 海岛 旅游 中国
  • 简介:ThepresentpapersummarizesajointeffortundertakenbytheInstitutoGeográficoMilitardeChile(IGM)andtheInstitutoAntárticoChileno(INACH)inordertoobtaindigitalcartographyoftheFildesPeninsula,ReyJorgeIsland,Antarctica.ThispeninsulaconstitutestheprototypeprojectareaforthemainIGM_INACHprojectN°153“CartographicSurveyandGeographicInformationSystemoftheSouthShetlandsIslands'TheDigitalCartographywasimplementedatthe1∶5000scale,usinggeodeticGPScontrolpointsreferencedtoITRF92andWGS84Data.TheUTMProjectionwasused.AllproductswereproducedincompliancewiththecartographicstandardsoftheIGM.ThiscartographywasdesignedinordertosatisfytherequirementsofaGeographicInformationSystemdevelopedbyINACH.Thisgeo_referenceddatabaseincorporatesavarietyofthematicinformation,enablingittosupportscientificinvestigations,environmentalandmulti_disciplinarystudies,andotherapplications.AsaresultofthisprojecttheInstitutoGeográficoMilitardeChileproducedamapat1∶5000scaleindigitalformat,andalsoa1∶10000topographicmap,inpaperformat,withtwoeditions:firsteditionoftwochartsandasecondeditionwithonechartcoveringthewholeprojectarea.Chileandothercountrieshaveanumberofimportantpermanentactivitiesinthisarea.Thesemapsaredesignedtosupportseveralanddiversegeo_spatialstudiesrelatedtotheseactivities.

  • 标签: 数字制图学 GPS 地图的过程
  • 简介:AnimprovedtopographicdatabaseforKingGeorgeIsland,oneofthemostfrequentlyvisitedregionsinAntarctica,ispresented.AfirststepconsistedincombiningdatafromdifferentialGPSsurveysgainedduringtheaustralsummers1997~1998and1999~2000,withthecurrentcoastlinefromaSPOTsatelliteimagemosaic,topographicinformationfromexistingmapsandfromtheAntarcticDigitalDatabase.Fromthisdatasets,adigitalterrainmodel(DTM)wasgeneratedusingArc/InfoGIS.Inasecondstep,asatelliteimagemapatthescale1∶100000wasassembledfromcontourlinesderivedfromtheDTMandthesatellitemosaic.Alackofaccuratetopographicinformationintheeasternpartoftheislandwasidentified.AdditionaltopographicsurveyingorSARinterferometryshouldbeusedtoimprovethedataqualityinthatarea.TheGISintegrateddatabasewillbeindispensableforglaciologicalandclimatologicalstudiesandadministrativeandscientificpurposes.Infuture,theapplicationofGIStechniqueswillbemandatoryforenvironmentalimpactstudiesandenvironmentalmonitoringaswellasformanagementplansonKingGeorgeIsland.

  • 标签: 乔治国王岛 南极半岛 GIS 数字地面模型 卫星图象地图 冰河撤退
  • 简介:生态系统服务成为了生态系统管理和评估的核心元素之一。作为生态系统服务并且为维持国家生态的安全的一个关键区域,生态系统变化,实现效果评估在国家关键生态的功能地区是重要的,为支持主要功能地区策略并且为改进生态的文明的构造。这篇文章在海南岛的中央山区学习一个热带雨林区域的生态的地区,中国。多--来源卫星数据和地面观察统计与geo统计方法和生态的评价模型被分析。这份报纸的核心分析包括生态系统模式,质量和服务。借助于空间、时间的规模扩大和多维的时空关联分析,生态系统变化的趋势和稳定性特征被分析,并且实现效果评估被讨论。分析显示出许多结果。在生态的地区内的森林区域的比例比在海南岛的平均水平显著地高。在1990-2013期间,解决逐渐地在生态的地区内增加了。在在2010的地区的实现以后,人的活动紧张增加了,与是城市的主要陆地使用构造和陆地开垦。在生态的功能地区的水保存在地区外面比那高。一般来说,它稍微增加了,但是有明显的变化。在地区内的土壤保存在外面也比那好。然而,它在1990-2013期间表明了戏剧的变化和相对差的稳定性。在地区内的人的骚乱索引在外面比那显著地低,并且有更低的生物多样性威胁水平。特别在2010-2013,在地区内的人的骚乱索引的增加的范围是显著地不到那外面。

  • 标签: 生态系统评价 海南岛 森林区 热带 中国 生态系统服务
  • 简介:TodateonlyonespeciesofthegenusVaticaLinn.(Dipterocarpaceae)hasbeenidentified,andasubspeciesandthreevarietieshavebeenreportedonHainanIsland,China.However,itremainedcontroversialwhetherthespecieswasVaticamangachapoioranewspeciesVaticahainanensis,andwhetherthesubspeciesorvarietiesaretaxonomicallyvalid.Weevaluatedheremorphometricvariationsof133treescollectedfromninepopulationsandherbariumspecimensofVaticaspp.using16traitsofleafandfruit.Amongthese,leaftraitsvariedmorewithinandamongpopulationsthandidfruittraits.Fourtraitsofratiosweremorestablethandirectly-measuredtraitswithinandamongpopulations.Therangesoflaminalength,laminawidthandheightofmaximumlaminawidthpointwerethegreatestamongthe16traits,whilenumberoflateralveinsvariedleastamongthe12directly-measuredtraits.Measurementsfromall9populationsoverlappedforeachmorphologicaltrait,andvariationofeachtraitwascontinuousamongbothindividualsandpopulations.TherangeofvariationdidnotdistinguishanyspecimenfromV.mangachapoiasdescribedinthefloraofSoutheastAsia.Byclusteranalysis,individualsofeachpopulationaswellasspecimensofeachvarietyformednodistinctclusters.Thepublishedvarietiesthuswerecharacterizedbynodistinguishingvariationsincomparisonwiththeninesampledpopulations.Inconclusion,thenewspeciesV.hainanensisaswellasthesubspeciesandvarietieswerenotsupportedbyourcomparisons,andonlyV.mangachapoiwithoutanysubspeciesorvarietiesoccursonHainanIsland,China.

  • 标签: Vatica Linn. Vatica mangachapoi MORPHOLOGICAL VARIABILITY
  • 简介:ABSTRACT AGISisproposedasatoolforthemanagingplanfortheAntarcticspeciallymanagedarea(ASMA)inAdmiraltyBay.TheASMAcomprisestheareaconsideredtobewithintheglacialdrainagebasinofthebay.Furthermore,itincludespartofSSSINo.8adjacenttotheareabutoutsideoftheglacialdrainagebasin.Threestationsandsixrefugesarelocatedinthearea.UsingaSPOTsatelliteimagemap,thelimitsoftheASMAaremarkedanditsareaisre_calculated.Itconsistsof362km2,including186km2islandicefieldandsmallcirqueglaciersand32km2ice_freefield.Therestcompriseswaterofthebayandasmalladjacentarea(8km2)oftheBransfieldStrait.TheASMA_GISwillconsistsof12datalayersrangingfromthephysiographicsettingstothebiologicalandadministrativefeatures.AlldatawillbeimplementedintoArc/InfoGISaccordingtothecartographicguidelinesoftheSCARWG_GGI.First,fiveplansofinformationwillberealisedusingatopographicdatabasecompiledfromvarioussourcesanddatafromtherevisedbathymetricchartpublishedbytheBrazilianNavyHydrographicSurveyandalsoincluding:1)LimitsoftheASMAandprotectedareas;2)Glaciologicalfeatures(e.g.drainagebasinlimits)and3)Humanpresence(e.g.stationsandhistoricalsites).ThesebasicGISlayerswillbeoperationalinearly2001.Then,additionaldataontheremaininglayers(e.g.hydrology,geologyandgeomorphology)willbeincludedfrompublishedsources.TheASMA_GISwillformanimportantdatabaseforenvironmentalmonitoringandstudiessurveyingtemporalchangesoffeaturessuchasglacierfrontpositionsorbirdbreadingsites.

  • 标签: 海事法海湾 设法的计划 环境监视 ASMA
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  • 简介:Duetotheirparticularopticalcharacteristics,metallicislandfilmshavethepotentialtosignificantlyincreasetheenergyconversionefficiencyofsolarcell.Weexperimentallyandtheoreticallyinvestigatedtheeffectofsubstratetemperatureonthemorphologiesandopticalpropertiesofthesilverislandfilms.Atlowtemperature,below300℃,asthesubstratetemperatureincreases.Comparedtothefilmspreparedatroomtemperature,thesizesofnanoparticlesdecreaseandtheAbsorptionpeaksshifttoshorterwavelengthaccompaniedbyanincreasedensityresultingina150%Absorptionefficiency.Asthesubstratetemperaturegoesupto300℃,nanoparticleswithlargerin-plan(X-Y)dimensionsareformed,thenumberdensitydecreasesandtheAbsorptionpeaksredshiftbuttheAbsorptionefficiencyisstill10%higher.Numericalsimulationrevealsthatthesebehaviorsareaconsequenceofmorphologiestransformation.

  • 标签: 太阳能电池 衬底温度 光学特性 银岛膜 光学薄膜 收获
  • 简介:epigenetic修正的一个改变的模式例如DNAmethylation和histone修正,对许多普通人的疾病批评,包括癌症。最近,mitochondrialDNA(mtDNA)被报导通过methylation模式的epigenetic规定与tumorigenesis被联系。学习DNAmethylation和CpG岛(CGI)的有希望的途径之一正在定序,克隆的分析源于methyl-CpG-binding领域蛋白质和限制酶MseI产生的物理库。在这研究,我们观察到在一个人的CGI库的349克隆的最冗余的序列都从人的mitochondrial染色体被产生。进一步的分析显示从mtDNA有5,845-bpDNA转移到染色体1,并且所有克隆应该是510-bpMseI碎片的产品,它包含了270bp的通常认为的CGI。510-bp碎片作为细胞色素coxidase子单元II(COXII)的部分被注解,并且包含COXII的相应序列的种系发生的分析从mtDNA显示出三个DNA转移事件到原子染色体,其一个经历了在不同染色体之间的第二等的转移事件。这些结果可以推进我们mtDNA怎么在原子核调整DNAmethylation的理解。

  • 标签: 线粒体基因组 CPG岛 同源序列 图书馆 DNA甲基化 线粒体DNA
  • 简介:Basedonnewmultibeambathymetricdataandabout300kmlongsingleseismicprofiles,threetopographicunitswereidentified:thecanyons,fracturalvalleyandsubmarineterraceonthenorthofChiweiIslandwhereisastructuraltransitionzonebetweenthesoutherntroughandthemiddletrough.TheChiweiCanyonandtheNorthChiweiCanyonaretwoofthelargestcanyonsintheEastChinaSea(ECS)slope.Topographicfeaturesandarchitecturesofthemaredescribed.Thestudyshowsthatbothofthemareoriginatedalongfaults.TheevolutionandspatialdistributionoftopographicunitsinthestudyareaarecontrolledmainlybythreegroupsoffaultswhichwereformedandreactiveintherecentextensionalphaseofOkinawaTrough.TheChiweiCanyonwasinitiatedduringthemiddlePleistoceneandguidedbyF4thatisaN-StrendingfaultontheslopeandF1,alargeNW-SEtrendingfaultonthetrough.ThepathwaymigrationfromtheremnantchanneltothepresentoneofChiweiCanyonistheresultofupliftoftiltedfaultblockthatiscoupledtotherecentextensionmovementsofthesoutherntrough.ThesubmarineterraceisdetachedfromtheECSslopebytheNEE-trendingfault.TheNorthChiweiCanyon,developingduringthelatePleistocene,isguidedbyF5,aN-Strendingfault,divertedandblockedbythesubmarineterrace.

  • 标签: 海底峡谷 地形特征 断层 扩张运动 冲绳岛
  • 简介:重金属的环境质量(Pb,Cd,Cr,同样Hg)在Chongming的农业表面土壤,岛被国家、本地、职业的标准基于大规模调查估计在哪个从蔬菜的28件样品阴谋,来自稻地的65件样品和来自西瓜地的9件样品从整个岛区域被收集。结果证明Pb的平均集中,Cd,Cr,并且Hg是21.6mg????踮

  • 标签: 土壤重金属 郊区农业 环境质量 崇明岛 上海 评价