简介：从下面的迷宫中圈出与图片相符的5个单词。

简介：Pamela，Mary和Henry一起上学去。沿路线。把字母顺序写在空格内。谁没用环保的交通工具呢？

简介：这四位就读牛津大学的学生正在踏单车，他们的单车是什么颜色呢？

简介：Tibet,themajorpartoftheQinghai-TibetPlateau,iscomposedofaseriesofgiantmountains,valleysandlakes.Skyscrapingpeaksanddeepriversisolatetheplateaufromtheoutsideworld.

简介：这商个人出发到世界各地游览。他们正搭乘哪些交通工具呢？

简介：这篇论文评估方法由Engelund和汉森，开发了的沉积运输的适用性Ackers和怀特，杨等，和货车Rijn和方法在中国开发了的武汉，到黄河，它高度专注并且有细密纹理的沉积。沉积数据从实验室斜槽从黄河，从一条运河的数据的32个集合，和数据的266个集合包括超过1000观察。最好的预言被吴并且长被Yang1996方法，武汉方法，和修改武汉方法获得，当相当好的预言被货车Rijn2004方法也提供时。Engelund和汉森，Ackers和怀特，和在他们的原来的形式的货车Rijn1984方法不对黄河适用。全部的负担集中的预言的结果像一样为床材料集中，尽管全部的负担包括大部分洗负担。

简介：Graphenenanostructures为未来nanoelectronics正在答应候选人并且固态量信息技术。在这评论，我们提供蚀刻的graphenenanostructures的很多个电子运输实验的概述。我们简短重游电子性质和体积的运输特征，即，二维的graphene。为使graphene成为象nanoribbons，单个电子晶体管和量点那样的nanostructures的制造技术，主要基于干燥蚀刻paper-cutting，技术详细被讨论。当我们构画出nanostructured设备的量运输性质时，当前的制造技术的限制被讨论。特别地，我们通过graphenenanoribbons和收缩这里集中于运输，象在包括的graphene量点上一样的单个电子晶体管加倍量点。这些quasi-one-dimensional(nanoribbons)和quasi-zero-dimensional(量点)graphenenanostructures表演怎么克服由侧面的graphene门和费用察觉者允许单个搬运人和他们的控制的监禁的graphene的无差距的性质的一条清楚的线路。特别地，我们强调那graphene量点，两倍量点是为基于纺纱的稳固的状态的很有希望的系统量计算，自从他们被相信有特别长，由于弱纺纱轨道在graphene联合和弱hyperfine相互作用旋转连贯时间。

简介：Liu:Jerry!You'rehereearly.Whatapleasantsurprise!Howdidyougetheresofast?

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简介：Thepaperprovidesacomprehensivetestingoftheapplicabilityof13sedimenttransportformulasunderdifferentflowandsedimentconditions.Thedimensionlessparametersusedfortestingthereliabilityandsensitivityofformulasaredimensionlessparticlediameter,relativedepth,Froudenumber,relativeshearvelocity,dimensionlessunitstreampower,andsedimentconcentration.Atotalof3,391setsoflaboratoryandriverdataareusedinthetests.Engineersmayfindthetestresultsusefultotheirselectionofformulasunderdifferentflowandsedimentconditions.

简介：Thispaperprovidesastep-by-stepderivationofthesedimenttransportfunctionsbyEngelundandHansen(1967)andbyAckersandWhite(1973).ThetheoreticalderivationsdemonstratethatthesetwofunctionsarecloselyrelatedtoBagnold's(1966)streampowerandefficiencyconcepts.

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简介：Thispaperstudiestheflowstructureandthebedloadtransportregimeinbackwaterflows,toprovideatheoreticalsupportforsolvingthesedimenttransportandbedscourproblemsinriversorreservoirswithbackwater.Thebedloadtransportratesunderdifferentconditionsareanalyzedfirstonthebasisoftheoreticalanalysis,measurementcomparisonandflumeexperiment,anditispointedoutthattheexistingformulasforthebedloadtransportratearenotapplicableforthebedloadtransportrateinbackwaterflows.Next,theflowstructureinanon-uniformflowisobservedbyflumeexperiments,andbyintroducingthebackwaterdegreeindex,thequantitativerelationbetweentherelativebedshearstressandthebackwaterdegreeisobtained.Finally,theformulaforthebedloadtransportrateapplicableforthereservoirchannelsegmentwithbackwaterflowsisobtainedthroughmeasurementsandflumeexperiments.

简介：Studiesonkineticsofadsorptionandreleaseofphosphorusbysoil,anewfieldinsoilchemistry,beganonlyovertenyearsago(Heetal.,1989;WangandZhu,1988;ZhangandZhang,1991;Lin,1989;LinandXue,1989;Jiang,1993;Xueetal.,1995;LUetal.,1997).

简介：ThehydrodynamicandthesedimenttransportpatternswithintheestuaryoftheYangtzeRiverarecomplexbecauseofinteractionoffluvialandthetidalforces,dependingonfreshwaterdischargeandtidalrange.Basedonthedatameasuredinrecentyears,thispaperdiscussesthecharacteristicsofflowandsedimentmovementintheYangtzeRiverEstuaryandtheirinfluencesontheevolutionoftheestuary.

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简介：Fromthegroupmovementofthebedloadwithinthebottomlayer,detailsofthenonlineardynamiccharacteristicsofbedloadmovementarediscussedinthispaper.Whetherthesedimentisinitiatedintomotioncorrespondstowhethertheconstanttermintheequationisequaltozero.Ifconstanttermiszeroandnodispersiveforceisconsidered,theequationrepresentsthetraditionalShieldsinitiationcurve,andifconstanttermiszerowithoutthedispersiveforcebeingconsidered,thenanewShieldscurvewhichismuchlowerthanthetraditionaloneisgot.Thefixedpointoftheequationcorrespondstotheequilibriumsedimenttransportofbedload.Inthemutationanalysis,wehavefoundthattheinflectionpointisthedemarcationpointofbreaking.Intheory,thebreakingpointcorrespondstothedividingboundaryline,acrosswhichthebedformchangesfromflatbedtosandrippleorsanddune.ComparedwiththeexperimentaldataofChatouHydraulicLabinFrance,theconclusionsareverified.

简介：Effectofvelocityjumpandtemperaturejumpontheheatandmomentumtransferinmicro-domainsisdiscussedindetail.Asimulationaidedbylocallyfullydevelopedassumptionisdevelopedtoexplaintheexperimentalresultsdifferentfromthosepredictedbyconventionaltheory.Heattransferinmicro-channelsundertheuniformheatfluxisalsoanalyzed.Itisfoundthatvelocity-jumpandtemperature-jumphaveanoppositeinfluenceandNusseltnumberhasagreatervaluewhentheKnudsennumberisverysmall,WiththeincreasingofKnudsenNumber,Nussqltnumberbecamesmallerthan8.24.

简介：基于在在定义变量和常数利用的数据的可靠性和代表性之间的关系，众多的费时间的方程要求复杂参数估计水流带来的碎石运输。包括流动分泌物，水深度，水表面斜坡，和表面谷物直径在这学习容易可存取的数据(来自在马来西亚的小河的d50)被用来估计水流带来的碎石运输。基因编程(GP)和人工的神经网络(ANN)当模特儿当估计床的互补工具在小河里基于在简洁和精确性之间的平衡装载运输，被使用。发达模型为ANN和GP与97%和93%的全面精确性表明高效，分别地与另外的传统的方法和实验方程相比。