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1.
Dynamic Characteristics of a New Pneumatic Cylinder with Curved Groove   总被引:1,自引:0,他引:1  
IntroductionPneumaticcylindersareeconomic,convenientandcanbedrivenathighspeed;therefore,theyarewidelyusedinmachinery.However,theiraccelerationanddecelerationcharacteristicsarefarinferiortohydraulicandelectricactuatorsduetotheaircompressibility.Improvedi…  相似文献   

2.
IntroductionLinearminimumvariancedstepaheadpredictorsaremostlypopularinmanyfieldsofapplication,suchasprocesscontrolprediction,adaptivecontrol,andeconomicprediction[1,2].Thispaperdiscussesthepracticeofcomputingcurrentpredictorformsandpresentsasetofrecursi…  相似文献   

3.
IntroductionThatinactivationoccursbeforenoticeableconformationalchangescanbedetectedduringdenaturationofcreatinekinaseandothe...  相似文献   

4.
PrefaceAgaricusblazeiMurrillbelongstoAgaricalesAgaricaceacAgaricalesandisakindofbothedibleandmedicinalfungiandcontainsrichbiologicalactivitycomponents[1,2].Atpresent,notmuchresearchwasfocusedonitsimmunologicalactivityabroad.Wehavenotfoundreportsofsuc…  相似文献   

5.
Introduction  Towanttochangeisthebasiccharacterofhumanbeings.Colorchangesreflectamyriadofelementsfromdesignandsomecharacteristicssuchasfineart,aswellaseconomics,politics ,tra ditionalcultureandpsychologicalmoods.Inordertokeepupwiththechangingcolorandmak…  相似文献   

6.
Quantum Efficiency of Fluorescent Dyes and Color Matching   总被引:2,自引:0,他引:2  
IntroductionThetextilecoloristsusefluorescentdyestoachievecertainspecialeffects ,whichcouldnototherwisebeobtained .Sincefluo rescentdyeshavetheuniqueopticalpropertiesdifferentfromcon ventionaldyesandagents,thevariousdifficultiesareencounteredmainlyinflu…  相似文献   

7.
IntroductionLanthanide (Ln3 )can promotethegrowthofcropsandincreasetheirproduction .However ,Ln3 canalsoaffectanimaltissuesandhassometoxicfunctionsatcertainconcentrations[1] .ThemechanismbywhichLn3 exertsbiologicaleffectsremainsunclear.StudiesshowthatLn3 cani…  相似文献   

8.
IntroductionSwirlburnersarewidelyusedinpulverizedcoalfiredboilerfurnaces.Toachievehighefficiencyandlowpollutioncombustion,numericalsimulationisneededtopredictthesizeoftherecirculationzone,theintensityoftherecirculatingflows,theparticlegasmixingandthere…  相似文献   

9.
IntroductionWiththedevelopmentofpowersystem ,thepredictablefaultcurrentisincreasingquickly .Insomecases ,thefaultcurrentcouldexceedeventheratedbreakingcapacityoftheinstalledcir cuitbreakersandthecurrentwithstandinglevelofotherequip ments .Furthermore ,with…  相似文献   

10.
IntroductionInnovatinguponastockingmachineoraribtopmachinecanmakeasmallcircularwarp knittingmachine .Itcanknitdecorativemeshstockingwell.Becausethecircularguideunit (C .G .U .)ofthemachinecouldnotwindroundthelatchneedlesinthelap pingmovement,successfullappi…  相似文献   

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