简介:Let■Ω=Γ=Γ1+Γ2(seeFig.1),meas(Γ1)>0,V={v|v∈H1(Ω),v|Γ1=0},andV0={ω|Δω=hinΩ,ω|Γ=0,(?)h∈V}.LetV0′=thedualspaceofV0,a(u,v)=∫Ω▽u·▽Δvdx,andF(v)=∫Ωfvdx+∫Γ2g1Δvds-∫Γg2(?)ds,f∈V′0,g1∈H-(1/2)(Γ2),g2∈H-(3/2)(Γ).Considerthevariationalproblem:findu∈Vsuchthata(u,v)=F(v),(?)v∈V0.(1)UsingTartar’slemma,weprovethatforproblem(1)thereexistsauniqueu∈Vsatisfying■
简介:China'sNationalFitnessPlanExercisingone'swaytogoodhealth:thisisanewconceptinChina,atleastfortheaverageperson.Thegovernmentisa...
简介:
简介:Aim:Tostudypercutaneousabsorptionandmetabolismofketoprofenisopropylester(KPE)viaexcisednudemouse'sandmonkey'sskin.Methods:Excisedskinwaspreparedbysurgicalexcisionandenzymedigestion.Sideby-sidediffusioncellswereusedforinvitropermeationstudies.TheconcentrationsofKPEanditsmetaboliteinsampleswereassayedbyHPLC.Results:AllKPEpenetrationthroughwholethicknessskinandstrippedskinwasmetabolizedtoketoprofen(KP).theconcentrationofwhichinthereciiversolutionincreasedlinearlywithtime.Astothenudemouseskin.thesteady-statefluxofKPthroughwholethicknessskinwas2.5timesthatofKPEthroughthewhloethicknessskin,buttheKPandKPEremaininginthewholethicknessskinafterthefinishingofKPEpenetrationwas22.2timesincomperedwiththeKPremaininginthewholethicknessskinafterthefinshingofKPpenetration.TherateofformationofthesteadystateKPfromKPEthroughtdermiswassignificantlylowerthanthatofKPEthroughthewholethicknessskin.Inhemonkeyskin,therateofformationofthesteady-stateKPfromKPEthroughthewholethicknessskinwas0.7timesthatfromKPEthroughstrippedskin.TheKPandKPEremaininginthewholethicknessskinafterthefinishingofKPEpenetrationwas2.0timethatinthestrippedskinafterthefinishingofKPEpenetration.Therateoffornationofthesteady-stateKPfromKPEthroughdermiswaslowerthanthatfromKPEthroughthewholethicknessskinandthestrippedskin.theKPremainingindermisafterthefinsihingofKPEpenetrationwasalsosignificantlylowerthantheKPremaininginthewholethicknessskinandthestrippedskinafterthefinishingofKPEpenetration.Conclusion:KPestersareofbenefittoimporovethelocalactionofKP.andskinesterasemetabolismmainlydevelopsintheepidermis.
简介:Inthispaper,theauthorsobtaintheBaecklundtransformationontime-likesurfaceswithconstantmeancurvatureinR^2,1.Usingthistransformation,familiesofsurfaceswithconstantmeancurvaturefromknownonescanbeconstructed.
简介:本文从聚氯乙烯加工的角度分析研究了R-1000PVC建材树脂与国内外同类产品在常规指标,颗粒形态和塑化性能上的差异及对加工性能的影响:同时研究了R-1000PV建材树脂在型材,管材上的应用优势。实验结果表明:应用R-1000PVC建材树脂可提高挤出设备的生产效率。在一定程度上也可提高制品的质量。
简介:F.L.R.飞儿,由一个女生和两个男生组成的乐团,在华语乐坛惊现周杰伦后仿佛又创造新的奇迹:在推出首张专辑前,就已经红透了台湾和内地的半边天!推出同名专辑后,主打歌有三四首都在排行榜上持续大热,销量更直副周杰伦的《七里香》。