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408 个结果
  • 简介:Themethodologyofvisualsimulationforatunnelengineeringconstructionscheduleispresented.Visualizationofsimulationmodel,calculationandresultofconstructionschedulesimulationisrealized,andtheconstructionsimulationandtheresourceoptimizationoftunnelengineeringaremade.Ariskanalysisandadecision-makingmethodoftunnelengineeringconstructionschedulebasedonvisualsimulationarepresented.Furthermore,usingScurvetheoryandschedulemanagementmethod,thereal-timemanagementandcontrolmethodoftunnelengineeringconstructionbasedonvisualsimulationispresented.Theapplicationtothetunnelengineeringconstructionscheduleanalysisandmanagementshowsthefeasibilityandeffectivenessofthemethodpresentedinthispaper.

  • 标签: 隧道工程 建设进度分析 进度管理 可视化模拟 资源优化 风险分析
  • 简介:TheErtanHydroelectricProjectislocatedabout40kmnorthfromDukouCityinSichuanProvince,onthelowerreachofYalongRiver,whichisoneofthetributariesofYangtzeRiver.Thedamsitecontrolsadrainageareaof116,400km~2,theannualaver-agerunoffandannualaverageriverdischargeatdamsiteamountto52.9×10~9m~3and1680m~3/secrespectively.Thenormalpoollevelisof1200m,thetotalreservoirstorageandeffectivereservoirstorage

  • 标签: reservoir YANGTZE RUNOFF drainage saturated UNDERGROUND
  • 简介:包含漂浮在表面水上的无穷地长水平的柱体的各种各样的水波浪问题在为波浪潜力采用一般多极扩大的水波浪的线性化的理论的文学被调查。这扩大包含一个常规波浪,波浪来源,波浪偶极子和常规没有波浪的部分的一般联合。没有波浪的部分能进一步以作为没有波浪的潜力被称为的没有波浪的多极被扩展。这些是Laplaces方程的单个答案(为在二种尺寸的非倾斜的波浪)或二维的Helmholz方程(为倾斜的波浪)令人满意免费表面条件并且很快腐烂离开奇特的点。构造这些没有波浪的潜力的方法与免费表面,或与作为漂浮在水上的一个薄有弹性的盘子建模的一个冰封面为象深水那样的很多种状况以一种系统的方式这里被介绍,忽视或考虑表面紧张的效果。

  • 标签: 线性理论 水波 自由面条件 免费 施工 亥姆霍兹方程
  • 简介:Inthispaper,amethodofconstructingdisplacement-basedelmentforthick/thinplatesisdevel-opedbyusingthetechniqueofgeneralizedcompatibility,andarectangulardisplacement-basedelementwith12degreesoffreedomforthick/thinplatesispresented.Thismethodenjoysagoodaccuracywithsimpleformulationandisfreeofshear-lockingasthethicknessoftheplateapproacheszero.

  • 标签: THICK PLATE THIN PLATE GENERALIZED compatibility
  • 简介:Constructionofahigh-speedrailwaylinkingEurope,Asia,Africa,andNorthandSouthAmericaisaseriousproposalthatwillprofoundlyimpactinternationalrelations.Discussionofthe"internationalization"ofhigh-speedrailtransportationisbeingledfromtheadvancedpositionofChina’swell-regardedachievementsinthisfield.Globalgeopoliticsandtraditionalgeopoliticaltheorieswillalsoundergorevolutionarychangesascooperativeplanningproceeds.

  • 标签: 高速铁路建设 地缘政治 政治影响 高速轨道交通 国际关系 合作计划
  • 简介:Wedesignafamilyof2DH~m-nonconformingfiniteelementsusingthefullP_(2m-3)degreepolynomialspace,forsolving2mthellipticpartialdifferentialequations.Theconsistenterrorisestimatedandtheoptimalorderofconvergenceisproved.Numericaltestsonthenewelementsforsolvingtri-harmonic,4-harmonic,5-harmonicand6-harmonicequationsarepresented,toverifythetheory.

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  • 简介:ThoughthefarmeristhegroupwiththebiggestpopulationinChina,theyareadisadvantagedgroup.IntheconstructionofnewsocialistcountrysideinChina,therearealsocausesforthedisadvantagedgroupstatus,whichareembodiedinmanyaspects.ThestatusistheimportantrootofmanyproblemsofagricultureandcountrysideinChina.Changingthefarmers'statusofthedisadvantagedgroupisthekeytoconstructingthenewsocialistcountryside,deepen-ingthereforminthecountrysideandrealizingthebenignsocialandeconomicdevelopmentinthecountrysideinChina.

  • 标签: 中国 新农村建设 农民 贫困人群 改革
  • 简介:Sumoylationisanimportantproteinmodificationdiscoveredrecently.SUMO(smallubiquitin-relatedmodifier)pathwayregulatestheproteinstabilityandtranscriptionalactivitywitha12-kDasmallmolecularprotein,SUMO,ligatedtothetargetprotein.ThepurificationofSUMOproteinsisakeysteptorevealtheirfunction.ThepurposeofthisstudywastoconstructtherecombinantSUMO1geneclonedtoapGEX-4T-1vectortoexpressandpurifytheSUMO1-GSTfusionproteininEscherichiacoli.First,thefulllengthDNAsequenceofSUMO1genewasamplifiedbyPCRandwasligatedtopMD18-Tvector.ThentheSUMO1genewassubclonedtopGEX-4T-1prokaryoticexpressionvectorbetweenBamHIandXhoIsites,andtransformedinEscherichiacoliDH5αcells.Therightcolonieswereidentifiedbyrestrictiveenzymedigestionandsequencing.ThecorrectrebombinantplasmidofpGEX-4T-1-SUMO1wastransformedinEscherichiacoliBL21cellsandtheninducedbyIPTG(isopropyl-β-D-1-thiogalacto-pyranoside)toexpresstheSUMO1-GSTfusionprotein.ThehighlypurifiedSUMO1-GST(glutathioneS-transferase)fusionproteinwasobtainedbyaffinitychromatography.Finally,thepropertiesofSUMO1-GSTfusionproteinwereconfirmedbyCoomassiebrilliantbluestrainandWesternblotanalysis.TherecombinantplasmidofpGEX-4T-1-SUMO1wassuccessfullyconstructed,andSUMO1-GSTfusionproteinsweresuccessfullyexpressed.

  • 标签: GST融合蛋白 蛋白纯化 蛋白质修饰 SUMO 小分子蛋白质 基因克隆
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  • 简介:AccordingtothelogicprocessofcarbonreductioninChinawhicharisesfromthemeasurementtoreduction,fromreductiontooffsetting,themeasurementofcarbonemissioninthetourismindustrywasthefirstandkeystep.Basedonthelifecycleassessmenttheoryandinput-outputanalysis,thisarticleusedeconomicandenvironmentalmeasurementtechnologies,TheSystemofNationalAccounting(SNA),TourismSatelliteAccount(TSA),SystemofIntegratedEnvironmentandEconomicAccounting(SEEA),andsoon,andbuiltupatop-downcarbonemissionanalysisframeworkforthetourismindustryandestimatedcarbonemissionofthetourismindustryinChinain2007.ThefindingshowedthatthetotalcarbonemissionofthetourismindustryinChinain2007was169.78milliontons,covering2.71%ofcarbonemissionofallindustriesinChinain2007,and2.44%ofthetotalcarbonemissioninChinain2007.ThedirectcarbonemissionofthetourismindustryinChinain2007was73.56milliontons,includingtransportation(50.14milliontons),sightseeing(1.33milliontons),lodging(4.19milliontons),accommodation(4.73milliontons),shopping(8.14milliontons),entertainment(0.67milliontons),communication(0.45milliontons),andothers(3.90milliontons).TheindirectcarbonemissionofthetourismindustryinChinain2007was96.23milliontons,mostlycontributedbycoking,gas,andpetroleumprocessingindustries,transportationandwarehousingindustry,machineryandequipmentmanufacturingindustry,andfoodmanufacturingandtobaccoprocessingindustry,whichcovered57%.

  • 标签: CLIMATE change carbon emission TOURISM INDUSTRY