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312 个结果
  • 简介:这个工作介绍调查结果的评论进包装算法的一个数字地基于的粒子的能力,叫的DigiPac,在许多包装的列预言床结构,为通用小团的一个范围,形状经常在设计工业的化学药品和过程使用了。产生宏观的性质与从侵略、非破坏性的测量技术导出的试验性的数据相比。另外,通过产生的床结构的样品,液体速度分布用格子Boltzmann被分析方法(LBM)模拟并且从文学对试验性的数据被比较。

  • 标签: 激光束 切削加工 实验 方法 仿真
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  • 简介:Inthispaper,asingle-columnstructureusedaswell-headplatformisstudied.Theloadsofwaveandcurrentexertedonthesingle-columnwillbegreatlyreduced,thereforethecostofthestructurewillbedecreased.Theadvantagesofthesingle-columnstructurecomparedwithordinaryjacketstructureareexplained.Adynamicanalysisofthistypeofstructureismadeandsomeproblemsrelatedtodynamicanalysisaresolved.Inordertocheckthereliabilityofcomputationtheoryandprogramme,modeltestshavebeencarriedout.However,asspaceislimited,theconclusionoftestswillbeintroducedinanotherpaper.Therefore,thistypeofstructureisapplicableforprocticalengineering.

  • 标签: single-column structure DYNAMIC ANALYSIS diffraction wave
  • 简介:Twokindsofgaseswereusedtoinvestigatetheinfluenceofgasdensityonthehydrodynamiccharacteristicsinabubblecolumn.Itcanbefoundoutthathighergasdensityleadstosmallerbubblediameterandtheflowpatternsaredifferentforthebothgases.Energybalancemechanismsareanalyzedbyconsideringthegasdensitydifference.Modelsweredevelopedtopredicttheaveragebubblediameterwithgoodaccuracy.

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  • 简介:教学设计指导思想与理论依据《2011版课标》中指出'让学生在教师的指导下,通过感知、体验、实践、参与和合作等方式,实现任务的目标,感受成功'。《基础教育课程改革纲要》提出'要改变课程实施过于强调接受学习、死记硬背、机械训练的现状,倡导学生主动参与、乐于探究、勤于动手,培养学生搜集和处理信息的能力、获取新知识的能力、分析和解决问题的能力以及交流与合作的能力'。

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  • 简介:农历九月初九是中国的传统佳节——重阳节。中国古人以九为阳数,九月初九,两阳相重,故叫“重阳”。重阳节,又称“老人节”。这一天要举行各种活动,如:登高、赏菊、插茱萸、吃重阳糕等。

  • 标签: 高中 英语教学 考试 教材
  • 简介:Fallingontheninthdaymonth,ChongyangFestivaloftheninthlunarisalsocalledtheDoubleNinthFestival.ItisnamedasChongyangFestivalbecauseaccordingtotheChineseastrology,nineisa"Yang"charactermeaningmasculineorpositiveand"Chong"inChinesemeansdouble.Asboththemonthandthedayarenine,itgotthisname.

  • 标签: 中学 英语 课外阅读 阅读材料
  • 简介:GROUND-BASEDMEASUREMENTSOFCOLUMNABUNDANCEOFOZONEANDUV-BRADIATIONOVERZHONGSHANSTATION,ANTARCTICAFORTHE1993“OZONEHOLE”ZhouXiuji...

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  • 简介:Thedoubleconstraintequationsintheself-dualgravitationaltheorycontainingthecosmologicaltermarederivedin3+1gravity.Furthermore,inordertodeeplystudytheLorentzianandEuclideanrealityconditionsforthistheory,therelationsbetweenconstraintsarediscussedbyintroducingthedoubleconstantconformaltransformationandthedoublecomplexfunctionmethod.

  • 标签: 引力理论 约束方程 宇宙项 伍形变换
  • 简介:Phosphatidylinositolpolyphosphates(PIPx)arerelatedwithtyrosinekinaseactivation,cellproliferationandcarcinogenesis.InordertoinvestigatetheactionmechanismofPIPx,itisdesirabletosynthesizeaffinitycolumnofPI-3,4-P2,whichisexpectedtobeabletoisolatethebindingproteinsofPI-3,4-P2.ThyraminereactedwithCH-Sepharose4Bgivingcolumn13.Thep-aminogroupof3’-(1’,2’-distearoyl-glyceryl)-1-(2-p-aminobenzyl)-3,4-di-O-phosphoryl-myo-inositylphosphate(12)wasdiazotized,thendiazo-coupledwithcolumn13togivePI-3,4-P2affinitycolumn14.ThisPI-3,4-P2affinitycolumnisaneffectivetooltopickupbindingproteinsofPI-3,4-P2.

  • 标签: Phosphatydylinositol-3 4-diphosphate BINDING protein inositol PI-3
  • 简介:Asoneofthemostimportantdailymotoractivities,humanlocomotionhasbeeninvestigatedintensivelyinrecentdecades.Thelocomotorfunctionsandmechanicsofhumanlowerlimbshavebecomerelativelywellunderstood.However,sofarourunderstandingofthemotionsandfunctionalcontributionsofthehumanspineduringlocomotionisstillverypoorandsimul-taneousin-vivolimbandspinalcolumnmotiondataarescarce.Theobjectiveofthisstudyistoinvestigatethedelicatein-vivokinematiccouplingbetweendifferentfunctionalregionsofthehumanspinalcolumnduringlocomotionasasteppingstonetoexplorethelocomotorfunctionofthehumanspinecomplex.Anovelinfraredreflectivemarkerclustersystemwasconstructedusingstereophotogrammetrytechniquestorecordthe3Din-vivogeometricshapeofthespinalcolumnandthesegmentalpositionandorientationofeachfunctionalspinalregionsimultaneously.Gaitmeasurementsofnormalwalkingwereconducted.Thepreliminaryresultsshowthatthespinalcolumnshapechangesperiodicallyinthefrontalplaneduringlocomotion.Thesegmentalmotionsofdifferentspinalfunctionalregionsappeartobestronglycoupled,indicatingsomesynergisticstrategymaybeemployedbythehumanspinalcolumntofacilitatelocomotion.Incontrasttotraditionalmedicalimaging-basedmethods,theproposedtechniquecanbeusedtoinvestigatethedynamiccharacteristicsofthespinalcolumn,henceprovidingmoreinsightintothefunctionalbiomechanicsofthehumanspine.

  • 标签: 生物力学 脊椎 人类行动 运动分析 立体摄影术