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

简介：Toestablishthemechanismofsurfacechangeinacontinuouspolishingsystem,anidealmathematicalmodelisbuiltbasedonWinkler’shypothesisandthePrestonequation.Thebasicfeaturesofthemodelarethechangeratesinthesurfacepeak–valley(PV)valuesoftheworkpiece,conditioningdiskandpitchlap,ratherthanthespecificsurfaceshapes.Inaddition,anequilibriumstateexistsinthesystem,indicatingthatthesurfacechangeratesareallzero.Underequilibrium,thesurfaceofthelapcouldremainflat,anditisinsensitivetothesurfaceerroroftheworkpiece.Thesecharacteristicslaythetheoreticalfoundationsforhigh-efficiencyandhigh-precisionpolishing.Themethodstoobtainanequilibriumstatewithflatsurfacesarethenproposedandconfirmedexperimentally.High-precisionsurfacesbetterthanλ/10(λ=632.8nm)areconsistentlyproducedexperimentally.

简介：Duetoitshighpolishingefficiency,longworkinglifeandwideapplicationrange,REpolishingpowderhasbecomethemostpopularfinepolishingmaterial.Inrecentyears,accompanyingtherapiddevelopmentofelectronicinformationtechnology,thedemandforpolishingpowderis

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简介：InstitutionofModernPhysics(IMP)hasdesigned,fabricatedandinstalledthefirstSRFcavityelectropolishingsystemofChina.It’ssizedfor1.3GHzSRFcavities,andalsocanworksformultiplecellcavitieswithfurtherupgradeofstructure.

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简介：Basedonthegivenreactionconditionandmedium,thegrowthofmicro-andnanocrystalscanbedividedintofourtypes,growthinsolutionatnormalpressure,hydrothermalgrowth,solvothermalgrowth,andmolten-saltgrowth.Whenthewaterororganicsolventasthereactionmedium,surfactant,suchassodiumdodecylbenzenesulfonate,canbeaddedtoregulatethe

简介：ThePhilippinedepartmentofEnergy(DOE)hassignedamemorandumofagreementwiththeJapanesegovernmentforaP33.SM(US$0.67M)demonstrationproject.The65kWmicrohydropowersystemwillbenefitabout200householdsinLeyte.

简介：Wepresentamethodthataccuratelymeasureslargeopticalsurfacesbeforepolishingusingalasertracker.Usingthescanningmodeofthelasertrackerconsiderablyimprovesmeasurementefficiencyandminimizesthedominanterrorscausedbyenvironmentalchange.WeusethismethodtomeasureaΦ1.3-masphericmirrorandobtainameasurementuncertaintyof0.72μm(rootmeansquare,RMS).

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简介：Theeffectsofpolishingonproximatecompositions,physico-chemicalcharacteristics,mineralcompositionsandantioxidantpropertiesofthericefloursobtainedfromthreedifferentpigmentedricevarieties(Chak-haoAngangba,Chak-haoAmubiandChak-haoPoireiton)wereinvestigated.Thericevarietiesweresignificantly(P<0.05)differentinthecontentsofthetestcharacteristics.Lipids,ash,minerals,phytochemicals(phenolicacidsandflavonoids)and2,2-diphenyl-1-picrylhydrazyl(DPPH)activityofricefloursweredecreasedafterpolishing(9%degreeofmilling),whileamylosecontentandlightnesswereincreased.X-raydiffractionpatternofricefloursexhibitedA-typecrystallinepatternwithreflectionsat15.1o,17.1o,18.2oand23.0o.Pastingpropertiesandtransitiontemperaturesweredecreasedafterpolishingtreatment.Polishingresultedinchangesinthecrystallinity,enthalpyandmorphologyofriceflours.

简介：除了逛街、吃饭、看电影,小情侣约会还有什么好玩意呢?micro一下吧!iQuemicro全名为"iQueGAMEBOYmicro",是任天堂GAMEBOYmicro主机的中国版,它采用轻薄短小的金属机身、高精细度的2英寸背光液晶屏及可更换的面板设计。

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简介：AIM:ToscreenmicroRNAs（miRNAs）andsetuptargetmiRNAsinpterygium.METHODS:PrimaryfibroblastswereisolatedfrompterygiumandTenon’scapsuleandcultured.ImmunocytochemicalanalysisandWesternblottingwereperformedtoconfirmthecultureoffibroblasts.Inall,1733miRNAswerescreenedinthefirststepbyusingGeneChip?miRNA3.0Array.SpecificmiRNAsinvolvedinthepathogenesisofpterygiumweresubsequentlydeterminedusingthefollowingcriteria:1)highreproducibilityinarepetitivetest;2)baselogvalueof>7.0forbothcontrolandpterygialfibroblasts;and3)logratioof>1.0betweenpterygialfibroblastsandcontrolfibroblasts.RESULTS:Primaryscreeningshowedthat887/1733miRNAswereup-regulatedand846/1733miRNAsweredown-regulatedinpterygialfibroblastscomparedwiththoseincontrolfibroblasts.Ofthe1733miRNAsscreened,4miRNAs,namely,miRNA-143a-3p,miRNA-181a-2-3p,miRNA-377-5pandmiRNA-411a-5p,mettheabove-mentionedcriteria.Primaryscreeningshowedthatthese4miRNAswereup-regulatedinpterygialfibroblastscomparedwithcontrolfibroblastsandthatmiRNA-143a-3phadthehighestmeanratiocomparedwiththemiRNAsincontrolfibroblasts.CONCLUSION:miRNA-143a-3p,miRNA-181a-2-3p,miRNA-377-5pandmiRNA-411a-5pareup-regulatedinpterygialfibroblastscomparedwithcontrolfibroblasts,suggestingtheirinvolvementinthepathogenesisofpterygium.

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简介：ThispaperisfocusedonthemodelidentificationofaMicroAirVehicle(MAV)instraightsteadyflightcondition.Theidentificationisbasedoninput-outputdatacollectedfromflighttestsusingbothfrequencyandtimedomaintechniques.Thevehicleisanin-house40cmwingspanairplane.Becauseofthecomplexcoupled,multivariableandnonlineardynamicsoftheaircraft,linearSISOstructuresforboththelateralandlongitudinalmodelsaroundareferencestatewerederived.TheaimoftheidentificationistoprovidemodelsthatcanbeusedinfuturedevelopmentofcontroltechniquesfortheMAV.

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

简介：说比尔盖茨是天才，没有多少人会反对，他拥有多项世界第一他是第一个靠观念、智慧、思维致富，荣登世界首富的人，也是有史以来最年轻的世界首富；他是第一个白手起家、在短短20多年内创造个人财产达到无人能及的商业奇才；他首开新经济致富的先河，成为人类历史上第一个靠软件拥有亿万资产的先知先觉者；他是第一个利用高科技和高智商创造巨额财富的典范……而且他还在继续创造着无数个世界第一。比尔盖茨不但是成功者，而且是所有成功者之神。

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