简介：Aseriesofmodifiedpoly(methylmethacrylate,PMMA)resinswerepreparedandcomparedtheiradsorptionabilitiestoendotoxin.Theresultsshowedthatadsorbents,whichweregraftedwithtertiaryamineandlongspacingarms,hadthebestadsorptioncapacitiesandgoodbloodcompatibility,Itishopefultobeusedasadsorbentinhemoperfusionforclinicalclearanceofendotoxin.Theinfluenceoforiginalconcentrationofendotoxinonadsorptionandtheadsorptionmechanismwerealsoinvestigated.

简介：Inanefforttodevelopbiomaterialstomeetguidedtissueregeneration(GTR)standardsforperiodontaltissuerecovery,ahomogeneousandtransparentchitosan(CS)/hydroxyapatite(HA)membranewithpotentialapplicationsasGTRbarrierinperiodontaltherapyhasbeenpreparedviainsitucompositing.ThemembranehasbeendesignedtohaveasmoothroughasymmetricstructurethatmeetsthedemandforGTR.ComponentandmorphologyofthemembranearecharacterizedbyXRDandSEM.ItcanbeindicatedthatHAwasinsitusynthesizeduniformlyintheCSmembrane.MechanicalexperimentsofthemembraneswithvariousHAcontentsshowthattheirtensilestrengthsareadequateforperiodontaltherapy.Biologicalpropertiesofthemembranehavebeenperformedbycelltoxicityassays,hemolysistestsandanimalexperiments.Resultsindicatethatthemembranehasgoodbiocompatibilityandinductiveeffectforcellgrowth.ThereforethismembranecanbepotentiallyappliedasGTRbarriermembraneforperiodontaltissueregeneration.

简介：AhighMwofPLLAwassynthesized,itintendedtobeusedinthemanufactureofbioabsorbablescrewappliedinbonefractureinternalfixation.Theopticalreactionconditionshavebeendiscussed.

简介：Theadsorptionpropertytheoperatinglife,theoperatingexchangecapacityandregenerationofD412macroporousphosphonomethylaminachelatingresinforremovingCa2+,Mg2+andFe2+fromhighpHbrineofalkaliproductionbyionicmembranewereinvestigatedTheresinshowedgoodphysical-chemicalandkineticproperty,highexchangecapacity,excellentdurability.