简介:Aseriesofmodifiedpoly(methylmethacrylate,PMMA)resinswerepreparedandcomparedtheiradsorptionabilitiestoendotoxin.Theresultsshowedthatadsorbents,whichweregraftedwithtertiaryamineandlongspacingarms,hadthebestadsorptioncapacitiesandgoodbloodcompatibility,Itishopefultobeusedasadsorbentinhemoperfusionforclinicalclearanceofendotoxin.Theinfluenceoforiginalconcentrationofendotoxinonadsorptionandtheadsorptionmechanismwerealsoinvestigated.
简介:Inthepresentstudythemembranefoulinginmicrofiltrationusedforcellharvestinginadeadendsystemhasbeeninvestigated.experimentalresultswereanalysedintermsofexitingmembranefiltrationmodelsandmembraneresistances.Thecakefiltrationmodel(CFM)andstandardblockingmodel(SBM)havebeenconsideredinthisstudy.Variousmembraneresistancesweredeterminedatdifferentprocessingtime,feedconcentrationandstirringspeed.Resistancestopermeationinthissystemincludefiltermedium,poreblocking,adsorption,cakelayerandconcentrationpolarization.
简介:Non-destructivediagnosticmethodsareveryimportantforbeamadjustmentsandmonitors,especiallywhenthebeamintensityislessthan10~8ppsduringtheheavy-iontreatmentofcancer.NowthediagnosticdevicesofHIFRLcan’tsatisfytherequests,sowedecidetoconstructadetectingsystemoftheresidual-gasbeamprofile~([1,2]).ThesystemusesthePositionSensitiveDetector(PSD)~([3,4])basedonmicrochannelplate(MCP)to
简介:Thepropertiesofaseriesofphasemeasurementtechniques,includinginterferometry,theHartmann–Shackwavefrontsensor,theknife-edgetechnique,andcoherentdiffractionimaging,aresummarizedandtheirperformanceinhighpowerlaserapplicationsiscompared.Theadvantages,disadvantages,andapplicationrangesofeachtechniquearediscussed.
简介:Aclearlight-yellowsilversolwhichhasthevisiblespectralabsorptionat390nm,whenadsorbedphenylmercaptotetrazole(PMT)ormercaptobenzothiazole(MBT),hasanewabsorptionat510-550nm.ItwasfoundthattheadsorptionofhalideionscompeteswithPMTandMBT.However,halideionshaveacompletelydifferentinfluencefromPMTandMBTonthespectralabsorptionofthesilversol.Thedifferencesmayresultfromthechangeofthepropertiesofthesurfaceofthesilversubcolloidalparticlesandfromthebondformscombiningadsorbateswiththesubstrates.
简介:Inthispaper,severalmixtruerulesofsoundvelocityandtheirusefulnessincharacterizingthecomponentsofbiomediumareanalysed.Itispointedoutthatforcharacterizingthecomponentsofbiomedium,therulesarecompatiblewitheachotherundercertainconditions,andtheerrorsbetweeneachruleandrealsoundvelocityarediffferent.Itconcludesthatthereisnogeneralrulesuitableforvariousmediaamongabovementionedrules.
简介:Thesynthesisandpropertiesofcarbonxerogelsarebrieflydescribedinthismini-review,emphasizingthemethodsusedfortuningtheirsurfacechemistryandtexturalpropertiesinordertodesignefficientelectrocatalystsforfuelcells.Inparticular,theroleplayedbythesurfacefunctionalgroupsindeterminingtheloading,dispersion,oxidationstateandstabilityofthemetalphasesisaddressed.
简介:AnelectroncyclotronresonanceheatingsystemwillbeconstructedinthenearfutureforECHandECCDinvestigationonHL-2Atokamak.ThenewECRHsystemwillprovideHL-2Awithapowercapabilityof1MWfor1satfrequencyof70GHz.Consequently,itisveryimportanttochooseasuitablegyrotronandsomecomponentsforHL-2AECRHsystem.
简介:Inanefforttodevelopbiomaterialstomeetguidedtissueregeneration(GTR)standardsforperiodontaltissuerecovery,ahomogeneousandtransparentchitosan(CS)/hydroxyapatite(HA)membranewithpotentialapplicationsasGTRbarrierinperiodontaltherapyhasbeenpreparedviainsitucompositing.ThemembranehasbeendesignedtohaveasmoothroughasymmetricstructurethatmeetsthedemandforGTR.ComponentandmorphologyofthemembranearecharacterizedbyXRDandSEM.ItcanbeindicatedthatHAwasinsitusynthesizeduniformlyintheCSmembrane.MechanicalexperimentsofthemembraneswithvariousHAcontentsshowthattheirtensilestrengthsareadequateforperiodontaltherapy.Biologicalpropertiesofthemembranehavebeenperformedbycelltoxicityassays,hemolysistestsandanimalexperiments.Resultsindicatethatthemembranehasgoodbiocompatibilityandinductiveeffectforcellgrowth.ThereforethismembranecanbepotentiallyappliedasGTRbarriermembraneforperiodontaltissueregeneration.
简介:Thelargeareaplasticscintillatorfiber(BCF-12)iondetectorarrayismainlymadeof4×108fibers,2×108photo-transmittersand2×108photomultipliertubes.Thefiberwithsinglecladisabout111cmlonganditscrossseetionisasquarewhosesizeis5mm×5mm.Thefibersarearrayedperpendicularlytothedirectionoftheincidentbeam.Eachendsideofeveryfourpiecesoffiberisconnectedtoabendedphoto-transmitter
简介:PhaseShiftingAndLogicalMoire(PSALM)isakindofcomputerimageprocessingmethodwhichcanbeusedinphasemeasurementandtoobtaintheshape,deformationandstraindistributionofanobject.Thispaperpresentsthestructureandworkingprocedureofa2DphasemeasurementPSALM2Dprogramanditsapplication.Whenanalyzingmoireinterferometricfringes,wecanobtain2Ddistributionofdisplacementandstrain.Whenitisusedinreflectionmoirewecanmeasuretheslopeofaspecimen.SatisfactoryvisualizationandquantitativeresultsaregivenbyPSALM2D.