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简介：恩智浦半导体和微软Windows嵌入式金牌合作伙伴Adeneo公司9月19日共同宣布：微软．NETMicroFramework已被移植，以支持恩智浦广受欢迎的基于ARM7^TM处理器的LPC2000微控制器系列和基于ARM9TM处理器的LPC3180微控制器。由此，嵌入式开发者在设计基于恩智浦LPC2000和LPC3000系列微控制器的解决方案时，将能够利用微软．NET和VisualStudio工具的优点，加速其针对小尺寸、低功耗设备应用的开发。同样地，微软Windows应用开发者也将能够直接选用恩智浦LPC2000和LPC3000微控制器作为其嵌入式应用的开发平台。

简介：Basedonphotogrammetrytechnology,anovellocalizationmethodofmicro-polishingrobot,whichisrestrictedwithincertainworkingspace,ispresentedinthispaper.Onthebasisofpinholecameramodel,anewmathematicalmodelofvisionlocalizationofautomatedpolishingrobotisestablished.Thevisionlocalizationisbasedonthedistance-constraintsoffeaturepoints.Themethodtosolvethemathematicalmodelisdiscussed.Accordingtothecharacteristicsofgrayimage,anadaptivemethodofautomaticthresholdselectionbasedonconnectedcomponentsispresented.Thecentercoordinateofthefeatureimagepointisresolvedbybilinearinterpolationgraysquareweightedalgorithm.Finally,themathematicalmodeloftestingsystemisverifiedbygloballocalizationtest.Theexperimentalresultsshowthatthevisionlocalizationsysteminworkingspacehashighprecision.

简介：Micro-structures3-Dprofilemeasurementisanimportantmeasurementcontentforresearchonmicro-machiningandcharacterizationofmicro-dimension.Inthispaper,anewmethodinvolved2-Dstructuretemplate,whichguidesphaseunwrapping,isproposedbasedonphase-shiftingmicroscopicinterferometry.Itisfitnotonlyforstaticmeasurement,butalsofordynamicmeasurement,especiallyformotionofMEMSdevices.3-Dprofileofactivecombofmicro-resonatorisobtainedbyusingthemethod.Thetheoreticprecisioninout-of-planedirectionisbetterthan0.5nm.Thein-planetheoreticprecisioninmicro-structuresisbetterthan0.5μm.Butattheedgeofmicro-structures,itisonthelevelofmicrometermainlycausedbyimpreciseedgeanalysis.Finally,itsdisadvantagesandthefollowingdevelopmentarediscussed.

简介：Smallconcentrationsofahigh-molecular-weightpolymerhavebeenusedtocreateso-called'elasticturbulence'inamicro-scaleserpentinechannelgeometry.Itisknownthattheinteractionoflargeelasticstressescreatedbytheshearingmotionwithinthefluidflowwithstreamlinecurvatureoftheserpentinegeometryleadsinitiallytoapurely-elasticinstabilityandthenthegenerationofelasticturbulence.Weshowthatthiselasticturbulenceenhancestheheattransferatthemicro-scaleinthisgeometrybyupto300%undercreepingflowconditionsincomparisontothatachievedbytheequivalentNewtonianfluidflow.

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简介：AbriefreviewismadeonthetheoryoftheLagrangianresidualcirculationandinter-tidaltransportsinaconvectivelyweaklynonlinearsystem.Inthereviewtheemphasisisputonthesystematicaldevelopmentofthetheoryanditsweaknessofconvectivelyweaklynonlinearapproximation.ThefundamentalsofaLagrangiantidally-averagedtheoryoncirculationwithinter-tidaltransportprocesseshavebeenproposedforageneralnonlinearcoastal/estuarinesystem.TheLagrangianresidualvelocityisstrictlydefined,andithasbeenverifiedtobeabletoembodythevelocityfieldofcirculation.Anewconceptoftheconcentrationforinter-tidaltransportprocessesispresented.Theconcentrationdescribingtheinter-tidaltransportprocessesshouldbea'Lagrangianinter-tidalconcentration'definedandnamed,butnottheEuleriantidally-averagedconcentrationusedtraditionally.Thecirculationdescribedherecontainsasetofinfinitetemporal-spatialfieldsofvelocity/concentration,eachofwhichcorrespondstoaspecificvalueoftidalphasesvaryingcontinuouslyoveronetidalcycle.Whentheconvectivelyweaklynonlinearcondition(withasmallerorderofeddydiffusionandsources)isapproximatelysatisfied,asetofinfinitetemporal-spatialfieldsofvelocity/concentrationcanbereducedtoasingleone:themasstransportvelocity/theEuleriantidallyaveragedconcentrationasexhibitedtraditionally.

简介：InordertodiscussthecontentdistributionsandfluxesofheavymetalsinsuspendedmattersduringatidalcycleintheturbiditymaximumaroundtheChangjiang(Yangtze)Estuary,thecontentsofheavymetals(Zn,Pb,Cd,CoandNi)havebeenanalyzed.Duringatidalcycle,theaveragecontentsofheavymetalsareintheorderofZn>Ni>Pb>CoàCd.Theaveragecontentsinebbtidearegenerallyhigherthanthatinfloodtide.However,attheinshoreSta.11,influencedbythecontaminationfromthenearbywastetreatmentplant,theaveragecontentsofZnandNiinfloodtidearehigherthanthoseinebbtideandattheoffshoreSta.10,thecontentofCdinfloodtidehigherthanthatinebbtideduetomarine-derivedmaterials.Thefiveheavymetals,mainlyterrigenous,aretransportedtowardseast-northeast,andsettledownwithsuspendedmattersintheareabetweenSta.11andSta.10.Influencedbymarine-derivedmaterials,thefluxvalueofCddoesnotaltersignificantlywithobviouslychanginginfluxdirectiontowardsnorthwest.Thesourceofheavymetals,thesalinityofwaterandtheconcentrationofsuspendedmattersarethemainfactorscontrollingthecontentdistributionsofheavymetalsduringatidalcycle.Thereisapositivecorrelationbetweenthecontentsofheavymetals(Zn,Pb,CoandNi)andthesalinityofwater,whiletheoppositecorrelationbetweenthecontentsandtheconcentrationsofsuspendedmatters.Becauseofmarine-derivedmaterials,thecontentofCdisnotcorrelatedwiththeconcentrationofsuspendedmattersandthesalinityofwater.

简介：Bycalculatingtheazimuth,phaseangleandchangerateoftidalforce,andcontrastingtheirrupturetypes,wefindthatin6of11reversefaultingearthquakes,theanglesbetweenthedirectionofthehorizontaltidalforceandcompressiveprincipalstressarewithin33°,theverticalphaseanglesofall8strike-slipearthquakesareintheupwardpeaksectionandtheverticalphaseanglesoftwoextensionalnormalfaultingearthquakesareinthedownwardpeaksection.Accordingtotheabovestatistics,themechanismoftidalforcetriggeringoftheWenchuanMS8.0Earthquakeanditsstrongaftershocksisdiscussed.

简介：-Theturbulencemechanismplaysanimportantpartinthemixingprocessandmomentumtransferofturbulence.Athree-dimensionalPrandtlmixinglengthtidalmodelhasbeendevelopedtosimulatetidalflowsandwaterquality.TheeddyviscositiesanddiffusivitiesarecomputedfromthePrandtlmixinglengthmodel.Inordertomodelthewaterqualityofanestuaryorcoastalareamanyinterdependentprocessesneedtobesimulated.Thesemaybeconvenientlyseparatedintothreemaingroups:transportandmixingprocesses,biochemicalinteractionofwaterqualityvariablesandtheutilizationandre-cyclingofnutrientsbylivingmatter.Themodelsimulatesfulloxygenandnutrientbalance,primaryproductivityandthetransport,reactionmechanismandfateofpollutantsovertidaltime-scales.ThemodelisappliedtonumericalsimulationoftidalflowsandwaterqualityinDalianBay.Themodelhasbeencalibratedagainstalimiteddatasetofhistoricalwaterqualityobservationsandingeneraldemonstra

简介：Thedifference-ratiorelationsareintroducedtoseparatetidalconstituentsthatarealiasedduetothesamplingintervalandsamplingspanoftheTOPEX/POSEIDONaltimeter.ItisfoundthatsometidalconstituentssuchasK1andSSA,thoughaliasedatalongtrackpoints,arenotaliasedatcrossoverpointsbecausethedataatcrossoverpointsaredoublethoseatalongtrackpoints.Sotheharmonicanalysismethodcanbeemployeddirectlyfortheanalysisoftimeseriesatcrossoverpoints.Thenthedifference-ratiorelationsfromcrossoverpointsareintroducedtoanalyzethetimeseriesatalongtrackpoints.TheTOPEX/POSEIDONdataintheNorthwestPacificareanalyzedwiththismethod.Theresultsfromthismethodagreewellwithtidalconstantsfromtidalgauges.

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简介：NitrogenandphosphoruscontentsareanalyzedintheoverlyingwatersandporewaterstakenfromtheChangjiangEstuaryandShanghaicoastaltidalflatsinthisstudy.Inaddition,thediffusionfluxesofnitrogenandphosphorusacrossthesediment-waterinterfaceintidalflatsareestimatedaccordingtothenutrientconcentrationgradientsattheinterface.Ithasbeenindicatedthattheconcentrationsofammonium,nitrite,nitrateanddissolvedphosphorusinoverlyingwatersrangefrom0.0082～2.56,0.03～0.58,0.69～5.38and0.035～0.53mg/L,respectively,while0.0025～1.35mg/LforNH4+-N,0.0055～0.20mg/LforNO2--N,0.61～1.14mg/LforNO3--Nand0.11～0.53mg/LforDPinsurfaceporewaters.Thefindingshaverevealedthatammonium,nitrite,nitrateanddissolvedphosphorusdiffusionfluxesacrossthesediment-waterinterfacearebetween-0.024～0.99,-0.39～-0.0019,-3.09～thesourceofphosphorusandanimportantsinkfornitrogeninthewaters.

简介：Throughdensifiedsurfacesamplingofforaminiferaandaccurateelevationmeasurementalongthreetransectlinesinopen-coasttidalsalt-marshofJianchuan,particularsalt-marshforaminiferaassemblageswerefound.Thesalt-marshforaminiferaassemblagesaredistributedinwell-definedverticalzonationswithrespecttoelevationandcloselyparallelmarshfloralzonations.Atthetopoftheverticalzonationallforaminiferadisappearabruptlywhichareaccuratelylocatedatthehighesthighwaterdatum.Thisdistributionpatterncanbeusedtorelocateformersealevelsaccurately(toanaccuracyofwithin±5cm).Amodemregionalcriterionofforaminiferaforrelocatingtheformersealevelsinhighresolutioninourcountryisprovided,anddeficienciesofstudyingtheverticalzonationonlyinshelteredcoastsalt-marshabroadarefilledup.

简介：ManyobservationsshowthatintheYellowSeainternaltidalwaves(ITWs)possesstheremarkablecharacteristicsofinternalKelvinwave,andintheSouthYellowSea(SYS)thenonlinearevolutionofinternaltidalwavesisoneofthemechanismsproducinginternalsolitarywaves(ISWs),whichisdifferentfromthegenerationmechanisminthecasewherethesemidiurnaltidalcurrentflowsovertopographicdrops.Inthispaper,themodelofinternalKelvinwavewithcontinuousstratificationisgiven,andanelementarynumericalstudyofnonlinearevolutionofITWsismadefortheSYS,usingthegeneralizedKdVmodel(GKdVmodelforshort)foracontinuousstratifiedocean,inwhichthedifferenteffectsofbackgroundbarotropicebbandfloodcurrentsareconsidered.Moreover,theparameterizationofverticalturbulentmixingcausedbyITWsandISWsintheSYSisstudied,usingaparameterizationschemewhichwasappliedtonumericalexperimentsonthebreakingofISWsbyVlasenkoandHutterin2002.Itisfoundthattheverticalturbulentmixingcausedbyinternalwavesisverystrongwithintheupperlayerwithdepthlessthanabout30m,andtheverticalturbulentmixingcausedbyISWsisstrongerthanthatbyITWs.

简介：Wingfappingandmorphingcanbeverybenefcialtomanagingtheweightofmicroairvehiclesthroughcouplingtheaerodynamicforceswithstabilityandcontrol.Inthisletter,harvestingenergyfromthewingmorphingisstudiedtopowercameras,sensors,orcommunicationdevicesofmicroairvehiclesandtoaidinthemanagementoftheirpower.Theaerodynamicloadsonfappingwingsaresimulatedusingathree-dimensionalunsteadyvortexlatticemethod.Activewingshapemorphingisconsideredtoenhancetheperformanceofthefappingmotion.Agradient-basedoptimizationalgorithmisusedtopinpointtheoptimalkinematicsmaximizingthepropellentefciency.Tobeneftfromthewingdeformation,weplacepiezoelectriclayersnearthewingroots.Gausslawisusedtoestimatetheelectricalharvestedpower.Wedemonstratethatenoughpowercanbegeneratedtooperateacamera.Numericalanalysisshowsthefeasibilityofexploitingwingmorphingtoharvestenergyandimprovingthedesignandperformanceofmicroairvehicles.

简介：这个工作由进行批实验在沉积调查Cu离子的吸附，包括等温的实验和吸附动力学实验。从等温的实验的数据用Freundlich和Temkin模特儿兰米尔被分析，试验性的运动数据用伪first-order，pseudo-second-order，Elovich，液体电影散开和intra粒子散开模型是合适的。兰米尔模型导致了为平衡数据合适的最好，它显示沉积上的Cu离子的吸附能力是1.0403?mg?有K1>L4.2877的KL价值?L?mg1。也提供的Freundlich和Temkin模型好适合，并且nFnF和A价值是3.8565和66.9964?Lmg1,分别地，显示在Cu离子和沉积之间的更强壮的吸附紧张和吸附精力。与伪first-order和Elovich模型相比，pseudo-second-order模型为描述吸附动力学是更适当的，显示吸附的化学吸着性质。吸附运动过程能被划分成电影散开，毛孔散开和吸附反应。为吸附动力学的控制的步随着吸附过程的发展变化了。全部吸附过程拿了180?min。电影散开是控制步骤为开始的20?min。在期间20～60?min时期，逐渐地增加的毛孔散开和电影散开减少了以便两现象共存了。毛孔散开在60-180期间是控制步骤?min时期。

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简介：Ｉ．ＩｎｔｒｏｄｕｃｔｉｏｎＭｉｃｒｏｗａｔｅｒｃｏｌｅｃｔｉｎｇｔｅｃｈｎｉｑｕｅｉｓａｋｉｎｄｏｆａｇｒｉｃｕｌｔｕｒａｌｍｅａｓｕｒｅｔｈａｔｍｅａｎｓｔｏｃｏｌｅｃｔｒａｉｎｆａｌｅｘｔｅｎｓｉｖｌｙｆｒｏｍａｌａｒｇｅａｒｅａｂｙｓｅｔ...

简介：高温度液体被注入微尺寸毛状并且它的轻繁殖行为被调查。我们集中于抽方法的二不同液体。第一个方法能把高温度液体听输入微尺寸由使用一个高压力差别系统毛状。在抽以后，与光搬运人一起连接的单个模式纤维(SMF)基于微波interferometry(OCMI)系统被用来测量不同液体听层次在微尺寸毛状。第二个方法能把房间温度引擎油输入由使用注射泵毛状。当液体被输入时，这个方法能避免空气水泡毛状。