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1.
No .1(SumNo .5 1)EffectMechanismofNucleophilesonIBCarbocationicPolymerizationLIShu -xin ,GUOWen -li,ZHANGZhi-hong (1)………………………………………………………………………………………………EffectofN -ContainingNucleophilesonIBCarbocationicPolymerization(III) ———EffectofHexpyridineand  theMechanismo…  相似文献   

2.
MATERIALSSCIENCEANDENGINEERINGBiocompatibilityevaluationinvitro .Part 1:MorphologyexpressionandproliferationofhumanandratosteoblastsonthebiomaterialsRUANJian ming ,GRANTM .Helen(2 0 0 1,1,1)………………………………………………………MicrostructuralevolutionofTiAlbasealloyduringthree …  相似文献   

3.
Enhanced-coagulation for algae removal from enrich nourishment water   总被引:2,自引:0,他引:2  
0 INTRODUCTIONItisfairlyeasytoachieveenrichnourishmentinareaswherewaterrunsveryslowly,suchaslake,reservoirs,apollutionformorecompositecontainingphosphorandnitrogen.FreshwaterinlakesandreservoirsinChinacomestoatotal6.261×1011m3,andaccountsfor23.2%ofthetotalamou…  相似文献   

4.
InvestigationoftheDynamicCharacteristicsofaRotorBearingAssembly¥(刘庆明)(庞志成)LIUQingmingPANGZhicheng(Dept.ofMethanicalEngineerin...  相似文献   

5.
0 INTRODUCTIONTheconstructionofundergroundnatural gasstorageisoneofthemostreasonableandeffectivewaysforbasicallysurmountingcityseasonalpeakshavingandstabilizingpeakwaving .Thenaturalgasissimplyinjectedintoundergroundstoragereservoirswhenmarketdemandfal…  相似文献   

6.
0 INTRODUCTIONInthispaper ,westudytheellipticequations-diva(x ,un,Dun) =fn +gn.inD′(Ω)( 1)whereΩisaboundedopensubsetofRn.Therearealotofpapersontheconvergenceofsolutionsto ( 1) .BoccardoandMurat[1] studiedtheconvergenceofthegradientsofsolutionsto ( 1)understructurecond…  相似文献   

7.
0 INTRODUCTIONTheproblemwasproposedin 2 0 0 0MathematicalContestinModeling (MCM )problemB .Basedonthestudyof 4colorproblem ,differentmodelsweredesigned .1 THEASSIGNMENTMODELEverytransmitter ,locatedatthecenterofeachhexagonwhoselengthissoveralargeplanar ,isassigne…  相似文献   

8.
0 INTRODUCTIONConsiderthelineardelaydifferentialequation(DDE)oftheform :y′(t) =ay(t) +by(t- 1) ,t>0 ,y(t) =g(t) ,  - 1≤t≤ 0 ,a ,b∈R .(1)UsingLaplacetransformation ,weareledtothequasi polynomialcharacteristicequationassociatedwith (1)as ,λ=a+bexp(-λ) . (2 )Stabilitycriteriaforsystemsw…  相似文献   

9.
SubiectsAuthor    No .PagesOptimumDesignofaThree -PhaseFrequencyChangerWangJunLiYuanhui 1(3)………………………………DesignofaDualModemandItsDSPRealizationZhuLidongLiXiaofengWuShiqi 1(7)…………………………Studyon 8FSKDemodulationforALTModemZhangQuLiXiaofeng 1(13)…………………………………………ANew…  相似文献   

10.
0 INTRODUCTIONTheintegratedCAD/CAPP/CAMsystemhasbeenwidelyusedinpracticewithsignificanteconomicgainsinconventionalmanufacturingfield.AlthoughafairlyhighlevelofautomationhasbeenachievedinElectricalDischargeMachining(EDM)equipment,thedesignofEDMproduction…  相似文献   

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