简介：Withcelluloseascarrier,immobilizedthermolysinHEIandHEⅡwerepreparedbydiazocouplingorglutaraldehydecrosslinkingreaction.Usingcaseinasasubstrate,theactivityrecoveryofimmobilizedthermolysinHEIandHEⅡreach34.5%and29%,respectively.Somefactorswhichaffecttheactivityoftheimmobilizedthermolysinsuchastemperature,mediumpH,EDTAandcalciumacetatewerestudied.Atthesametime,thethermalstabilityandstoragestabilityoftheimmobilizedthermolysinwerealsoinvestigated.

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简介：在这研究，海绵被用来在一个有限空格使驯养的污泥微生物不能调动，形成能够水藻的一个使不能调动的简历系统；microcystins移动。水藻上的移动效果，microcystins；这个简历系统的UV260；水藻移动的机制被学习。结果证明从污水处理工厂的活跃污泥能在驯服的7d以后把水藻从一个发育营养正常促进剂湖的水移开。为水藻的移动效率，有机物；当驯养的污泥在海绵上被使不能调动时，microcystins增加了。当水力的保留时间(HRT)是5h时，移动水藻评价，microcystins；UV260是90%，94.17%；84%分别地。使不能调动的简历系统主要由细菌组成了，Ciliata；Sarcodina原生动物门；轮虫metazoans。由菌胶团细菌的海藻的分解；由微动物的preying是海藻的移动的二个主要模式，它发生在二步：首先，由菌胶团的吸收；第二，由菌胶团细菌的分解；微动物的捕食性。

简介：Thepropertiesofimmobilizedglucoseoxidase(GOD)bythecomplexesofdiethylaminoethylcellulose(DEAEC)withdifferentpolymers,suchaspolymethylacrylicacid(PMAA),polyacrylicacid(PAA),polystyrenesulfonicacid(PSSA),polyvinylaleohol(PVA),polyethyleneoxide(PEO)andstyrene-maleicacidcopolymer(PSMA)wereinvestigated.TheactivityofimmobilizedGODwasobviouslyinfluencedbythecomponentoftheDEAECcomplexes.TherelativeactivityoftheimmobilizedGODreachedtomaximumandover90%ofthenativeGOD.whentheDEAEC-PMAADEAEC-PAAcomplexeswereusedasacarrierwiththemolarratioofDEAECandpolyacidofaboutone.Michaelisconstants(Km)oftheimmobilizedenzymesofDEAEC-GOD-PMAAandDEAEC-GOD-PAAweredeterminedtobe1.25and1.00,respectively.Moreover,theimmobilizedGODhasagoodstoragestabilityandcycliclife.

简介：Rheumatoidfactors(RFs)arethecharacteristicautoantibodiesofrheumatoidarthritis.Recentresearchesinourlaboratoryshowedthattheimmobilizedsingle-strandedDNA(ss-DNA)immunoadsorbentcanselectivelyremoveRFsfromtheserumofpatients.Inthepresentpaperarestudiedthemodificationofargininine,tryptophan,lysineresiduesandcarboxylterminusofIgGRF,whichwasseparatedfrompatients′serum,with1,2-cyclohexanedione(CHD),N-bromosuccinimide(NBS),pyridoxal5′-phosphate(PP)and1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide(EDC)respectively,andtheireffectsontheadsorptioncapacityoftheimmobilizedss-DNAimmunoadsorbentforIgGRF.Afterthespecificmodification,thecorrespondingadsorptioncapacitiesoftheadsorbentswerechangedfrom48%,46%,44%and54%to84%,14%,21%and81%,respectively.Theseresultsindicatethattheelectrostaticorionic-bondingisessentialfortheinteractionbetweenss-DNAandIgGRF.

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简介：在聚丙烯(PP)改进硅石的分散矩阵并且避免抗氧化剂的物理损失，有表面(SG-PAMAM)上的dendricpolyamidoamines的nanosilica被使用分叉的方法综合。然后使nanosilica不能调动的抗氧化剂(SG-PAMAM-AO)被从2,6-di-tert-butyl-4-phenol(AO)被导出的grafting2,6-di-tert-butyl-4-aminophenol准备。SG-PAMAM-AO被增加进PP由融化混合学习变老的性质。PP/SG-PAMAM-AO和PP/AO混合物的氧化正式就职时间被测量。SG-PAMAM-AO的抗氧化剂性质比AO的优异，这被发现。根据在相片热的老化前后的羰基吸收的变化，PP/SG-PAMAM-AO的相片热的氧化稳定性比PP，PP/SG-PAMAM和PP/AO的高得多。

简介：Ｍｅｔａｔｈｅｓｉｓｏｆ１－ＨｅｐｔｅｎｅｏｖｅｒＴｕｎｇｓｔｅｎＣａｔａｌｙｓｔＩｍｍｏｂｉｌｉｚｅｄｏｎＰｏｌｙｍｅｒｓＹａｏＪｉｎｓｈｕｌ；ＬｉＨｏｎｇ；ＳｕｎＪｕｎｔａｎ；ＨｅＢｉｎｇｌｉｎ（ＩｎｓｔｉｔｕｔｅｏｆＰｏｌｙｍｅｒＣｈｅｍｉｓｔ...

简介：Akindofluminousbacterialsensorsthatcanquicklydetecttheacutetoxicityofenvironmentalpollutantsweredeveloped.Themethodisbasedonthedetectionofthecellularlightofbrightluminousbacillusbymeansoffixingcellssoastodetectacutetoxicityofluminousbacillus.Thebacterialsensoriscomposedofimmobilizedfilmofphotobacteriumphosphoreum.Thesebacterialfilmsaresensitivetodetectingthetoxicoids,whicharedifficultorevenimpossibletobemeasuredbytraditionalanalyticalchemistrymethods.Thefilmsshouldbestoredat4℃andthestabilityofthesensorsexceeds1monthwithnomeasurabledeteriorationofthesignal.TheseresultsdemonstratethattheimmobilizedfilmofP.phosphreumcanbeusedtodeveloptheon-lineenvironmentalcontaminationmonitor.

简介：Theprocessofadsorptionofmetalionsbyimmobilizedmarinealgaewiththeexistenceofclaywasinvestigated.Itcanbenotedfromtheresultsthat,aftermixingwithclay,theadsorptionrateincreasesrapidlywiththeincreasingamountofthemarinealgae.WhenpH=5,thebestratiobetweentheclayandthemarinealgaeis1:4forPb2+.TheresultofinsituhandlingofthewastewatercontainingheavymetalsshowsthattheaverageadsorptionratesofheavymetalironsCu2+,Cd2+,Pb2+andNi2+areallover70%.

简介：CTAB/TX-100microemulsion-basedgel(MBG),whichcouldbesoakedinaqueoussolutionforalongtimewithoutmechanicalstrengthandshapechanges,wassuccessfullyprepared.LipaseimmobilizedinthisgelhadahigheractivitythanthatinCTABMBGwhencatalyzedtheesterificationreactionbetweenn-hexanoicacidandn-octanolanditsenantioselectivitywasslightlyhigherwhencatalyzedthestereoselectiveesterificationreactionbetweenracemicibuprofenandn-octanol.Inaqueoussolution,lipaseinCTAB/TX-100MBGcouldcatalyzesmoothlythehydrolysisreactionofoliveoilandcouldbereusedmanytimeswithouttheevidentchangeofMBGmechanicalstrengthalthoughitsactivitydecreased41.8%afternine-timerecycles.

简介：Anovelantibacterialmaterial(L-PET)waspreparedbyimmobilizingε-polylysineonpolyethyleneterephthalate(PET)nonwovenfabrics.SurfacemodificationsofthefabricwereperformedbyusingachemicalmodificationprocedurewherecarboxylgroupswerepreparedonthePETsurface,acouplingagentwasgrafted,andtheε-polylysinewasimmobilized.Scanningelectronmicroscopy(SEM)wasusedtoanalyzethesurfacemorphologyofthefabrics,whilethetoluidinebluemethodandX-rayphotoelectronspectroscopy(XPS)wereusedtoevaluatethegraftingdensities.TheantibacterialactivitiesoftheL-PETwereinvestigatedbyusingtheshaking-flaskmethod.TheelectronmicrographsshowedthatthesurfaceoftheblankPETandthemodifiedfabricsdidnotchange.TheresultsofXPSanalysisconfirmedthatε-polylysinewassuccessfullygraftedontothesurfaceofPET.TheresultsoftheantibacterialexperimentsshowedthatL-PETfabricshadexcellentantibacterialactivityagainstEscherichiacoliandStaphylococcusaureus,andthatL-PETfabricswerestableinstorageforatleasttwoyears.

简介：Poly(ethyleneterephthalate)(dacron,PET)filmswereexposedunderargonplasmaglowdischargewithdifferentglowsandinducedpolymerizationofacrylicacid(AA)inordertointroducecarboxylicacidgroupontoPET(PET-AA)assistedbyultravioletradiation(UV).HirudinimmobilizedPET(PET-HRD)filmswerepreparedbythegraftingofPET-AA,followedbychemicalreactionwithhirudin.ThesurfacestructureofthetreatedPETwasdeterminedbyX-rayphotoelectronspectroscopy(XPS).Thewettability,surfacefreeenergy,andinterfacefreeenergyofthefilmswereinvestigatedbycontactanglemeasurement.Thebloodcompatibilityofthefilmswasassessedbyplatelet-adhesiontestandfibrinogenconformationalchangemeasurementstoevaluatetheviabilityofthematerialsinbiomedicalengineering.Measurementbyscanningelectronmicroscopy(SEM)revealedthattheamountsofadhered,aggregatedandmorphologicallychangedplateletswerereducedonthehirudin-immobilizedPETfilms.Enzyme-linked-immunoassaymeasurementsthatdisclosedfibrinogenconformationalchangesshowedresultsconsistentwiththeplatelets’behavior.

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简介：TheSolvatedMetalAtomImpregnation(SMAI)techniquewasemployedtopreparemacroporousresinimmobilizedPd-Cubimetallicclustercatalysts.TheX-raydiffraction(XRD)andtransmissionelectronmicrograph(TEM)showedthatPd-CualloywasformedandtheparticlesizesofPd-Cuclusterswereverysmall,withaveragediameters<3nm.X-rayphotoelectronspectroscopyindicatedthatbothPdandCuwereinzero-valentstate.ThecatalyticactivitiesofthemacroporousresinimmobilizedPd-Cucatalystsinhydrogenationof4-methyl-3-penten-2-oneweremuchgreaterthanthatofthecarbonsupportedPd-Cucatalysts.

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简介：PhotocatalystwaspreparedbyimmobilizingTiO_2onglassbeadsusingthetradi-tionalsol-gelmethod.Ultravioletlight(UV)producedbypulsedstreamerdischargewasthenusedtoinducephotocatalyticactivityofTiO_2photocatalyst.Decolourationefficiencyoftherep-resentativeazodye(acidorange7,AO7)wasinvestigatedusingthesynergisticsystemofpulsedstreamerdischargeplasmaandTiO_2photocatalysis.Theobtainedresultsshowedthatthede-colourationrateofAO7couldbeincreasedby16.7%undertheconditionofaddingsupportedTiO_2inthepulsedstreamerdischargesystem,comparedtothatinthesolepulsedstreamerdischargeplasmasystem,duetothesynergisticeffectofpulsedstreamerdischargeandTiO_2photocatalysisinducedbypulsedstreamerdischarge.ThesynergisticsystemofpulsedstreamerdischargeandTiO~photocatalystwasfoundtohavemorereactiveradicalsfordegradationoforganiccompoundsinwater.

简介：Inordertoimprovethestabilityandcorrosioninhibitionperformanceofbioenzyme,lipaseandlsozymewereco-immobilizedonthemesoporousmolecularsieveMCM-41bytheadsorptionmethod.Thentheimmobilizedenzymeswerecombinedwithaminotrimethylenephosphonicacidandpolyasparticacidtopreventcorrosioncausedbycirculatingcoolingwater.Theweight-lossmethodandelectrochemicaltechniqueswereusedtoevaluatetheperformanceofcompositeinhibitors.Theco-immobilizedlysozymeandlipaseachievedgoodinhibitioneffects.Aftertheywerecombinedwithaminotrimethylenephosphonicacidandpolyasparticacid,thecorrosioninhibitionpropertieswerefurtherimproved.Theinhibitionefficiencywaspromotedto94.4%.Duringthecorrosioninhibitionprocess,theimmobilizedenzymesplayedanimportantrole.Theadditionofcorrosioninhibitorcouldinhibittheanodicdissolutionandcathodichydrogenevolutionprocessofcarbonsteelatthesametime.Theadsorptionofco-immobilizedlysozymeandlipasecompositeinhibitoronthesteelsurfacewasajointactioninvolvingphysicaladsorptionandchemicaladsorption.

简介：Transesterificationbetweenmethyl-butyrateand1-butanolinnonaqueoussystemswascatalyzedbyporcinepancreaticlipasewhichwasimmobilizedoncross-linkedpolystyrene.Organicsolvents,substrateconcentration,contentsofwaterandotherparameterswhichaffecttheimmobilizedenzymeactivitywerestudied.Lipaseimmobilizedonhydrophobiccrosslinkedpolystyrenecanreduceitsdiffusionlimitinthereaction.Itwasfoundthattheactivityofimmobilizedlipaseinorganicsystemswastwotimesashighasthatoffreelipase.