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61 个结果
  • 简介:both意为“两者都”,在谈到两者时,用both,即可指人,也可指物。一般放在定冠词、指示代词、形容词、所有格之前。作主语同位语时,要置于be动词之后,行为动词之前。

  • 标签: BOTH 行为动词 指示代词 定冠词 形容词 所有格
  • 简介:Thepressuregradientofthelithosphereisakeytoexplainingvariousgeologicalprocesses,andvariesalsointimeandspacesimilartothegeothermalgradient.Inthispaperacorrelationformulaofgeothermalgradientsandpressuregradientswasbuiltwiththethermocomprestioncoefficients.Basedonthisformula,thearticlehasstudiedtherelationbetweenthepressuregradientsandthegeothermalgradientsinthelithosphere,andtheresultsindicatethatthepressuregradientinthelithosphereisnonlinear,anditsminimumvalueisthelithostaticgradient,andthatthepressuregradientofthelithospherewillincreaseobviouslywiththecontributionofbothgeothermalandgravity,andcouldbetwicetimesmorethanthelithostaticgradient.

  • 标签: 压力梯度 地热 变质岩 岩石圈
  • 简介:In"HaveBothHardandSoft"systems,thesofttargetsandhardtargetsaredividedintotwodistincttargetsystem.Themeasuredresultsofsofttargetsystemareregardedasamatrixwithintervalnumbers.OnthebasisofTopsismethod,wediscussanewTopsisevaluationmethodon"HaveBothHardandSoft"systems,whichcombinedsofttargetswithhardtargets.

  • 标签: SOFT TARGET HARD TARGET CLOSE degree
  • 简介:Thispaperproposesarecursivealgorithmestimatingcoefficientsofthelinearstochasticcontrolsystem(ARXsystem)drivenbyamartingaledifferencesequence,whileadaptivelystabilizingthesystemwithoutintrodudcingexternalexcitationsignal.Thesystemisallowedtobeunstableandofnonminimum-phase.Theestimatesderivedforthecoefficientsofbothclosed-loopandopen-loopsystemsarestronglyconsistent.

  • 标签: 随机控制系统 闭合环 开环 系统识别
  • 简介:Anovelbipolarconjugatedpolymercontainingtriphenylamineand1,3,4-oxadiazoleunitswassynthesizedbySuzukireaction.ItsstructureandpropertieswerecharacterizedbyNMR,IR,UV-Vis,PLspectroscopyandelectrochemicalmeasurement.Thephotoluminescentspectroscopyandcyclicvoltammogramsmeasurementdemonstratedthattheresultingpolymershowsblueemission(477nm)andpossessesbothelectronandhole-transportingproperty.

  • 标签: 两极共轭聚合物 三苯胺 恶二唑
  • 简介:PARABOLICEQUATIONSWITHBOTHNON-CONVEXITYNONLINEARITIESANDSTRONGDEGENERACYYinJingxue(尹景学)(InstituteofMathematics,JilinUniversit...

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  • 简介:植物calcineurin象B一样(CBL)蛋白质作为重要Ca2+传感器被建议了并且明确地在植物特定的钙发信号与交往CBL蛋白质kinases(CIPK)交往。这里,我们基于米饭CIPK基因家庭的预言的序列在装饰用的梨树米饭变化Nipponbare识别了并且孤立15CIPK基因。基因结构分析证明这15基因被划分成intron少些并且intron富有的组,和OsCIPK3和OsCIPK24展出了在他们的成熟过程的其他的拼接。种系发生的分析显示米饭CIPK与Arabidopsis和白杨CIPK分享了一位祖先。基因表示的分析证明这些OsCIPK基因是象细菌的老家那样的关於生命的压力和不能生活的压力(象Hg2+,高咸度,寒冷和骆驼毛的织物那样的重金属)导致的差别。有趣地,五OsCIPK基因,OsCIPK1,2,10,11和12,而,在细菌的老家感染以后是transcriptionally起来调整的四OsCIPK基因,OsCIPK2,10,11和14,被所有处理导致,显示OsCIPK基因的那一些在植物涉及多重压力反应小径。我们发现建议CIPK在关於生命、不能生活的压力回答起一个关键作用。

  • 标签: 非生物胁迫 应激反应 分子分析 水稻 钙调神经磷酸酶 PK基因
  • 简介:Anacademic"SeminaronTibetanHistory",hostedbyChinaTibetologyResearchCenter,washeldinBeijingfromSeptemberItoSeptember3,2002.ProfessorsandExperts.inTibetanhistoryfromseveralTaiwanuniversities,suchasTaiwanPoliticsUniversity,CultureUniversity,ZhongzhengUniversity,SouthChinaUniversityandMingchuanUniversitytookpartintheseminar,andmorethan3omainlandscholarsfromTibet,Beijing,NanjingandChengdualsoparticipatedintheseminar.

  • 标签: 中国 西藏 历史发展 台湾地区 学术思想
  • 简介:Inthispaper,werewrotetheequationofalgebraiccurvesegmentswiththegeometricinformationonbothends.Theoptimalornearlyoptimalrationalparametricequationisdeterminedbytheprinciplethatparametricspeedsatbothendsareequal.Comparingwithotherliteratures,themethodofthispaperhasadvantageinefficiencyandiseasytorealize.Theequationofoptimalrationalparameterizationcanbeobtaineddirectlybytheinformationofbothends.Largenumbersofexperimentaldatashowthatourmethodhasbeengivenwithmoreself-adaptabilityandaccuracythanthatofotherliteratures,andiftheparametricspeedatanyendreachesitsmaximumorminimumvalue,theparameterizationisoptimal;otherwiseitisclosetooptimalrationalparameterization.更多还原

  • 标签: 地理信息 最佳参数 二次曲线 基础 代数曲线 自适应性
  • 简介:在里面很多地球物理或planetological背景包括地球内部核心,从岩浆海洋结晶的一个硅酸盐披风,或包围可能在很多主神并且农神冰冷的satellitesa对流传热遇到的一种深水oceana状况的冰壳水晶的层在与它的melt的层的接触。允许在一个稳固的层的边界或两个融化/结冰是可能的在层影响传送对流的模式。我们这里学习热传送对流的发作在一粘滞球形的壳与动态地导致了它的边界在也或两个都融化/结冰。这被显示出无尺寸的数字P(为每条边界的)的价值上的每interfacepermeable或impermeabledepends的行为,它是融化/结冰的timescale在上的比率一粘滞松驰timescale。P的小价值对应于可渗透的边界条件,当P的大价值对应于透不过的边界条件时。当也边界描绘的数字P是足够小的时,线性稳定性分析预言半渗透的边界的重要效果:允许边界在也融化/结冰允许更大的规模的出现对流模式。当外部边界是可渗透的时,效果是特别地激烈的,自从1个模式仍然是的度甚至在薄球形的壳的情况中最不稳定。在有可渗透的内部、外部的边界的球形的壳的情况中,最不稳定的模式在稳固的壳的一个全球翻译在于,没有变丑。在有可渗透的外部边界的一个完整的范围的限制,这对应于最近为地球内部核心建议的对流翻译模式。作为可能的申请的另一个例子,我们在假定全球表面下的海洋的存在的恩塞勒达斯冰壳讨论热传送对流的盒子,并且发现融化/结冰能在冰壳在传送对流的模式上有重要效果。

  • 标签: 边界条件 热对流 薄球壳 凝固 线性稳定性分析 熔解
  • 简介:Theauthorsstudyaporousmediumequationwitharight-handside.TheoperatorhasnonlocaldiffusioneffectsgivenbyaninversefractionalLaplacianoperator.ThederivativeintimeisalsofractionalandisofCaputo-type,whichtakesintoaccount'memory'.TheprecisemodelisD_t~αu-div(u(-Δ)~(-σ)u)=f,0<σ<1/2.Thispaperposestheproblemover{t∈R~+,x∈R~n}withnonnegativeinitialdatau(0,x)≥0aswellastheright-handsidef≥0.Theexistenceforweaksolutionswhenf,u(0,x)haveexponentialdecayatinfinityisproved.ThemainresultisH¨oldercontinuityforsuchweaksolutions.

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  • 简介:Thisletterproposesamethodfordesigningaspecificformationofsatelliteswheretheflyingmotiononlyexistsinacircleorbitplaneofthereferencesatellite,whichmeansthattheorbiteccen-tricityiszero.ThismethodcombinestheHillequation,theKeplerequation,andthegeometricalmeaningoforbitelements.Itcreatestheredundancyconditiontosimplifythededucingprocess,utilizesmultipleconditionstosolvetheorbitelementsforthesatelliteformation,andobtainstheanalyticalrelationshipoftheorbitelementsfortheformationsatelliteswiththeformationparametersandtheorbitelementsofthereferencesatellite.Usingtheseformulations,theorbitelementsandformationparametersfortheformationsatellitescanbesolvedforthegivenorbitelementsofthereferencesatellite.Theletterdescribestheproposeddouble-ellipseformationforbothGMTIandInSAR,andthevalidityoftheformationisdemonstratedviasimulation.

  • 标签: 航空器 设计方案 计算机 分析方法
  • 简介:Objective:Tostudythechangesofthrombomodulin(TM)inbothplasmaandtissueextractsofcancerpatientsforevaluatingitsclinicalsignificance.Methods:PlasmaTMlevelsweremeasuredbyenzyme-linkedimmunosorbentassay(ELISA)inbothplasmaof188cancerpatientsand24cancertissueextractsincludingtheiradjacentnon-cancertissues.Results:TheplasmaTMlevelsbothincancerpatientsandinmetastasispatientsweresignificantlyhigherthanthatincontrols[(33.47±14.25)μg/L,(41.68±16.96)μg/L,vs(20.40±7.22)μg/L,P<0.01].TheplasmaTMlevelsincancerpatientsafteroperationdecreasedobviouslythanthatbeforeoperation[(18.45±9.96)μg/L,vs(28.29±11.74)μg/L,P<0.01],whereas,theplasmaTMlevelsinpatientswithrecurrenceandmetastasisafteroperationincreasedobviously[(34.50±12.57)μg/L].Amongthetypesofcancer,theplasmaTMlevelsinmetastasislungcancers,gastriccancersandpancreaticcancersweresignificantlyhigherthanthatinnon-metastasisrespectivecancers.Nosignificantdifferenceswerefoundbetweencontrolsandnon-metastasiscancersincludinggastriccancers,pancreaticcancers,nasopharyngealcancers,largeintestinecancersandlaryngealcancers(P>0.05).TheTMlevelsincancertissueextractsweresignificantlylowerthanthatintheiradjacentnon-cancertissueextracts[(647.71±317.51)μg/Lvs(1455.63±772.22)μg/L,P<0.01].Onthecontrary,theplasmaTMlevelsinthesecancersweresignificantlyhigherthanthatincontrols.Conclusion:TheriseofplasmaTMlevelsincancerpatientswasassociatedwithmetastasisanddiffusionofcancers.TheTMlevelscanbeservedasansensitiveindexforjudgingprogressionandmetastasisofcancers.

  • 标签: 临床作用 血栓调节蛋白 血浆 间质组织浸膏剂 肿瘤 TM