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.

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

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

简介：ＳｔｕｄｉｅｓｏｎｔｈｅＥｌｅｃｔｒｏｎＴｒａｎｓｆｅｒＣｅｎｔｅｒｓｏｆＡｍｉｎｏＯｘｉｄａｓｅＩｍｍｏｂｉｌｉｚｅｄｏｎＳｅｌｆ┐ＡｓｅｍｂｌｙＭｏｎｏｌａｙｅｒＵｓｉｎｇＥｌｅｃｔｒｏｃｈｅｍｉｃａｌＭｅｔｈｏｄｓ＊ＬＩＪｉｎｇ－ｈｏｎｇ，ＣＨ...

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简介：Inthiswork,acidfunctionalizedmulti-wallcarbonnanotubes(MWCNTs)weremodifiedwithimidazolium-basedionicliquids.Theselectiveoxidationofvariousalcoholswithhydrogenperoxidecatalyzedby[PZnMo_2W_9O_(39)]~(5-),ZnPOM,supportedonionicliquids-modifiedwithMWCNTs,MWCNTAPIB,isreported.Thiscatalyst[ZnPOM@APIB-MWCNT],wascharacterizedbyX-raydiffraction,scanningelectronmicroscopy(SEM)andFT-IRspectroscopicmethods.Thisheterogeneouscatalystexhibitedhighstabilityandreusabilityintheoxidationreactionwithoutlossofitscatalyticperformance.