简介:Theparameteridentificationmodeloflargescalechromatographyseparationprocessisproposed.ThephaseequilibriumconstantsandlumpedmasstransfercoefficientsofsugarandreducingsugaradsorptiononD1,D2andD3resinsaswellastheaxialdispersioncoefficientsofthefluidthroughpackedcolumnsaredeterminedbymeansofthepulse-responseexperimenttechniquewithaninertsubstanceasatracerandthechromatographymeasuringtechnique.Theelutioncurvecalculatedfromtheseparametersisgoodagreementwiththeexperimentalelutioncurve.Thesensitivityanalysisoftheseparametersiscarriedout,andtheresultshowsthattheelutioncurvesofchromatographyseparationaremoresensitivetothevariationsofthephaseequilibriumrelationshipthantothevariationoftheaxialdispersionaswellasthelumpedmasstransfercoefficients.
简介:Electrostaticlayer-by-layerself-assemblymultilayerfilmsweresuccessfullyfabricatedfromC60-ethylenediamineadduct(C60-EDA)andDNA.Undervisiblelightirradiation,DNAisreadytobecleavedandthefilmsaredestroyed.
简介:PolysaccharidecoatedPLAnanoparticlesbearingaldehydegroupswerepreparedbydialysisofDMSOsolutionofcholesterolhydrophobic-modifieddextranpolyaldehydeandPLAagainstwater.Theaveragediameterofthenanoparticleswasabout160nm,andthesizedistributionwasnearlyhomogenous.ThenanoparticleswerefunctionalizedsimultaneouslywithCD71andEGFRantibodythroughtheSchiff'sbasereaction,andthenradiolabeledwith~(99m)Tc.Afterperfusedtheradiolabelednanoparticlesintotumor-bearing...