学科分类
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3 个结果
  • 简介:FractionsofplasmaproteinofmaleKunmingmice(bodyweight24.2±0.3g),treatedwithCisplatini.p.injectionindoseof10mg/kg,wereobtainedbyseparationonSephadex-G-50columns,bufferedwithammoniumacetatetopH5.7,TheXSRFexperimentswereperformedattheBEPC(BeijingElectronPositronCollider)synchrotronradiationfacility.Theelements(Pt,S,Ca,Fe,Ni,Cu,Zn,Se,BrandSr)inthefractionoftheplasmaproteins(>22KD)wereassayedusinghighlysensitiveSXRF.TherelativeconcentrationsofelementswerecalculatedbyanormalizationofCOmptonscatteringintensityaround22KeV,afterthenormalizationforcollectingtimeofX-rayspectrumandthecountingoftheionchamber,andsubractingthecontributionofthepolycarbonatefilmusedforsupportingthesamples.ThedeterminationcouldprovethattheelementPtinplasmawasboundwithmacro-molecularprotein.CuandSwerepresentinthefractionoftheproteininmicetreatedwithCisplatinandexhibitedanincrease,therationoftreated/controlwere1.66±0.06and1.78±0.33repectively,whereasZndecreasedtoaratioof0.78±0.09,OurresultsareinagreementwithotherswhichshowedthatCisplatinexposureleadstoamarkedlossofkidneycopper,andamoderateriseindidneyzinc.However,thisworkmainlyfocussedontheimplementationofthisanalyticalprocedure,butnotontheresultsoftheinvestigationsoftheeffectofCisplatinontraceelementsinplasmaprotein.

  • 标签: 等离子体 蛋白质 示踪元素 SXRF
  • 简介:Wedevelopedaone-dimensionalhybridmodeltosimulatetheDC/RFcombineddrivencapacitivelycoupledplasmaforargondischarges.ThenumericalresultsareusedtoanalyzetheinfluenceoftheDCsourceontheplasmadensitydistribution,ionenergydistributions(IEDs)andionangledistributions(IADs)onboththeRFandDCelectrodes.TheincreaseinDCvoltagedrivesmorehigh-energyionstotheelectrodeappliedtotheDCsource,whichmakestheIEDsattheDCelectrodeshifttowardshigherenergy,andthepeaksintheIADsshifttowardssmallangleregions.Atthesametime,italsodecreasestheionenergyattheRFelectrodeandenlargestheincidentanglesoftheions,whichstriketheRFelectrode.

  • 标签: 放电等离子体 直流电源 混合模型 驱动器 射频 模拟
  • 简介:Removalofsinglecomponentandbinarymixturesofbenzeneandm-xyleneusingamulti-pin-meshreactorwasstudiedtofindthedecompositioncharacteristics,carbonbalanceandCO_2selectivity.Thedecompositionrateofbenzeneinmixturewasapproximately16%lowerthanthatofsinglecomponentbenzene.However,thedecompositionrateofm-xyleneinmixturewasslightlyhigherthanthatofsinglecomponentm-xylene.Carbonbalanceofthemixturedecompositionprocessachievedalowerlevelthanthatofsinglecomponentbenzene/m-xylene.IncreaseinthespecificinputenergywashelpfultoimproveCO_2selectivityinthesinglecomponentdecompositionprocess,whilethespecificinputenergyhadanegligibleeffectonCO_2selectivityinthemixturedecompositionprocess.Bychangingtheoxygencontentinbackgroundgas,wefoundthatdifferenttypesofradicalsshoweddifferentreactionactivitiestowardbenzeneandm-xylene.Benzenewasmorelikelytoreactwithnitrogen-containingradicals,whilem-xylenewasmorelikelytoreactwithoxygen-containingradicals.

  • 标签: 二元混合物 挥发性有机化合物 脉冲高电压 VOCS 电晕放电 间二甲苯