简介：TheamountofOH^-replacedbysulfate,i.e.,sulfate-exchangealkalinity,fromtheelectricdoublelayerofferralsolcolloidwasmeasuredquantitativelyindifferentconditionswithanautomatictitrationequipment.TheamountofOH^-releaseincreasedwiththeamountofNa2SO4addedanddecreasedwithraisingpHinthesuspensionofferralsolcolloid.TheexchangeaciditywasdisplayedaspHwashigherthan5.6,Ifthenegativeeffectofsodiumionswasoffset,theamountofOH^-replacedbysulfatewaslargerthantheoriginalamountofOH^-releasedinthepHrangeoflowerthan5.8.TheamountofOH^-releaseddecreasedrapidlyaspHwashigherthan6.0anddroppedtozerowhenpHreached6.5.Inthesolutionof2.0molL^-1NaClO4,theamountofOH^-repleacedbysulfatefromthesurfaceofferralsolcolloidcouldbeconsideredastheamountofOH^-adsorbedbyligandexchangereaction.TheamountofOH^-releasedinthesolutionofNaClO4concentrationbelow2.0molL^-1fromwhichtheamountofOH^-adsorbedbyligandexchangereactionwassubtractedcouldbeconideredastheOH^-adsorbedbyelectrostaticforce,TheOH^-adsorbedbyelectrostaticforcedecreasedwithincreasesintheconcentrationofNaClO4andpHandincreasedalmostlinearlywiththeincreasingamountofNa2SON4added.ThepercentagesofOH^-adsorbedbyelectrostaticforceinwaterandintheelectrolytesolutionsof0.05and0.5molL^-1NaClO4inthetotalOH^-releasedwerecalculated,respectively.

简介：

简介：凝结絮凝过程在diosgenin废水的预告的处理被使用。当主要凝结剂和cationicpolyacrylamide(CPAM)被用作凝结剂帮助，Polyferric硫酸盐被使用。用罐测试过程，主要操作参数的影响，例如在凝结的自河pH和凝结剂剂量，性能被调查。有效pH被发现在6.58.0的范围，凝结剂剂量是100mg/L。在最佳的条件下面，15%化学的氧需求(货到付款)移动效率被完成，剩余混浊是不到20NTU。CPAM的存在实质地在25mg/L的范围与适当CPAM剂量支持了剩余混浊的减小。

简介：SulfatechitosanderivativeshavegoodsolubilityandtherapeuticeffectonthecellmodelofNAFLD.TheaimofthisstudywastoexaminethetherapeuticeffectofsulfatechitosanderivativesonNAFLD.ThemaleWistarratswereorallyfedhighfatemulsionandreceivedsulfatechitosanderivativesfor5weekstodeterminethepre-treatmenteffectofsulfatechitosanderivativesonNAFLD.ToevaluatethetherapeuticeffectofsulfatechitosanderivativesonNAFLD,theratswereorallyfedwithhighconcentrationemulsionfor5weeks,followedbysulfatechitosanderivativesfor3weeks.Histologicalanalysisandbiomedicalassaysshowedthatsulfatechitosanderivativescandramaticallypreventthedevelopmentofhepaticsteatosisinhepatocytecells.Inanimalstudies,pre-treatmentandtreatmentwithsulfatechitosanderivativessignificantlyprotectedagainsthepaticsteatohepatitisinducedbyhighfatdietaccordingtohistologicalanalysis.Furthermore,increasedTC,ALT,MDA,andLEPinNAFLDweresignificantlyamelioratedbypre-treatmentandtreatmentwithsulfatechitosanderivatives.Furthermore,increasedTG,AST,andTNF-αinNAFLDweresignificantlyamelioratedbytreatmentwithsulfatechitosanderivatives.Sulfatechitosanderivativeshavegoodpre-treatmentandtherapeuticeffectonNAFLD.

简介：

简介：张代洲，唐孝炎，秦瑜，岩坂泰信，盖秀贞ＴｅｓｔｓｆｏｒｉｎｄｉｖｉｄｕａｌＳｕｌｆａｔｅ－ＣｏｎｔａｉｎｉｎｇＰａｒｔｉｃｌｅｓｉｎＵｒｂａｎＡｔｍｏｓｐｈｅｒｅｉｎＢｅｉｊｉｎｇ￥ＺｈａｎｇＤａｉｚｈｏｕ；ＴａｎｇＸｉａｏｙａｎ（Ｃｅｎｔｅｒｆｏｒ...

简介：ItisfoundthattheincorporationofNitriteCorrosionInhibitor(NCI)greatlyweakenstheresistanceofmixturestosulfateattack.Tostudythemechanismofthisphenomenon,inthispaper,theinfluenceofNCIadditionononthecementpasteandmicrostructurechangeofhighperformanceconcretespecimensisstudiedbymeansofquantitativeXRD,SEMtests.TheresultsdemonstratethattheincorporationofNCIacceleratestheformationof

简介：Amildandefficientmethodfordiacetylationreactionwasdeveloped,bywhichdiacetatecouldbeachievedthroughthereactionofaldehydewithaceticanhydride,inthepresenceofcobaltsulfate,withanadmirableyield,atroomtemperature,withoutsolvent.Thecatalystcouldberecycledsixtimeswithoutadistinctlossofactivity.

简介：Bariumsulfateaggregateswithanaveragesizeof0.5μmweresynthesizedatpH7,directedbyethylenediaminetetraaceticacid（EDTA）anions.Theparticlemorphology,chemicalcomposition,andsizedistributionoftheBaSO4aggregateswerecharacterized.Theas-synthesizedBaSO4particlesweresphericalandcomprisedmanyinterconnectednanoballs,ofwhichthesurfacepropertieswereaffectedbytheEDTAanions.TheadsorptionofEDTAanionsreversedthechargeandweakenedthesurfacepolarityofBaSO4,instigatingtheformationofaggregatesbyaself-assemblyandtransformationprocess.TheresultingBaSO4particlesatpH9-10wereellipsoidalandfeaturedsmoothsurfaces.BasedonthezetapotentialofBaSO4,variationsinthemorphologyinducedbychangesinpHwerecloselyrelatedtotheadsorptionofmono-andmulti-valentanionsontotheelectricaldoublelayerofBaSO4.

简介：Inthisstudy,emulsion-solventevaporationmethodwasappliedtopreparethecelluloseacetate(CA)aqueousdispersion.Upontheanalyzingofthecharacteroftheaqueousdispersion,acontrolledreleaseformulationofsalbutamolsulfatecoatedwithcelluloseacetateaqueousdispersionwaspreparedthroughorthogonalexperimentdesign.Thefactorsthatcontrolthedrugreleasecharacterofthetabletswereinvestigated.Thedrugreleasemechanismoftheformulationwasalsostudied.TheexperimentalresultsindicatedthatCAaqueousdispersionhadexcellentfilm-formingabilityundertheeffectofplasticizer.ThedrugreleaseprofileofthecontrolledreleasetabletscoatedwithCAaqueousdispersionexhibitedzero-orderreleasecharacterandthedrugreleaseratewasmodulatedbytheosmoticpressureofthedissolutionmedium.

简介：Anincubationexperimentwasconductedtosimulatetheeffectoffloodingonwaterdeoxygenationinacidsulfatesoilfloodplainsystems.Theoriginallyoxygenated'floodwater'couldbedeoxygenatedimmediatelyfollowing'flooding'anditislikelythatthiswascausedmainlybydecompositionoforganicdebrisfromtheinundatedplants.Deoxygenationeventuallyledtothedepletionofdissolvedoxygen(DO)inthe'floodwater'anditishighlypossiblethatthisresultedinthetransformationsofferricFetoferrousFe,sulfatetohydrogensulfide,andorganicnitrogentoammonia(ammonification).Theaccumulationofthesereducedsubstancesallowsthe'floodwater'todevelopDO-consumingcapacity(DOCC).Whenthe'floodwater'ismixedwiththeintroducedoxygenatedwater,apartfromthedilutioneffects,thereducedsubstancescontainedinthe'floodwater'oxidizetofurtherconsumeDOcarriedbytheintroducedwater.However,itappearsthattheDOdropinthemixedwatercanonlylastforafewhoursifnoadditionalDO-depleted'floodwater'isadded.EntryofatmosphericoxygenintothewatercanraisetheDOlevelofthemixedwaterandlowerwaterpHthroughtheoxidationofthereducedsubstances.

简介：水泥臼的区域在早舞台在硫酸盐答案沉浸的在表面的42-集中分布被与化学分析相结合的分层的采样方法因此测量，并且散开系数在进内部区域的臼的表面区域的42-阴离子因此借助于即时飞机是计算的散开理论。当散开深度在臼的表面区域增加了时，试验性的结果证明SO42-集中逐渐地减少了。散开系数(D)与集中和有点环境的硫酸盐答案是相关的，它在开始与沉浸时间减少了，然后在时间的一个时期以后慢慢地升起了。起始的散开系数的计算(D0)和恶化的开始的时间(t)由硫酸盐引起了攻击进一步基于散开系数的数据被尝试，并且D0和t都也与硫酸盐和硫酸盐的不同类型的集中是相关的，这被发现。

简介：Silicawasused,asacatalystcarrier,toloadceroussulfateforcatalyzingthesynthesisofn-butylacetate.Themainpurposeofthisresearchwastoexplorethefeasibilityofsilicainimprovingthedecentralityandactivityofthecatalyst.Theeffectsofmolarratioofbutylalcoholtoaceticacid,theceroussulfateloadingsandthereactiontimeontheconversionofaceticacidwerestudiedbysinglefactorexperimentmethodandorthogonalexperimentmethodrespectively.Therefractiveindex(n20D)andmolecularstructureofthepreparedn-butylacetateweremeasuredbyAbbeRaefractometerandFourierTransformInfraredspectroscope,respectively.Thecomparisonsofthesilicaloadedandunloadedcatalystsforcatalyzingthesynthesisofn-butylacetateweremade.Theresultsshowedthatthesuitableconditionsforsynthesizingn-butylacetatewere:molarratioofbutylalcoholtoaceticacidof1.4∶1,uselevelofloadedceroussulfateof0.30gandreactiontimeof50min,respectively.Themaximumconversionofaceticacidforthesilicaloadedcatalystreached98.62%whichwas12.32%and16.43%higherthanthosefortheunloadedcatalystsreportedinliteratures,buttheuselevelofceroussulfatefortheformerwasmuchlessthanthoseforthelattersundersimilaroptimaltechnicalconditions.Thesilicawasprovedtobeagoodcatalystcarrierforenhancingdecentralityandactivityofthecatalystandincreasingtheconversionofaceticacid.Therepentanceofthesilicaloadedceroussulfatewasalsoinvestigatedintheexperiment.

简介：TheimmunomodulatingeffectsofF12onmouseperitonealmacroplhageswasintendedtobestudiedwithdifferentdosesof20,40,80,and120mg/Kg.F12increasedperoxidaseactivityindexcdependentmammerfrom0.02±0.001,to0.175±0.038,0.211±0.041,0.137±0.045and0.078±0.036,respectively,increasedcytotoxicityfrom127.33±22.96to162.74±19.53,237.30±25.15,178.62±36.22and158.66±42.75dpm,respectively,promotedphagocyticactivityfrom0.03±0.01to0.21±0.016,0.43±0.041,0.40±0.032and0.30±0.160^b,Furthermore,F12inaconcentrationof15,30,60,120ug/mlenhancedIL-1productionfrom0.15±0.02to0.20±0.005^b0.21±0.02,0.22±0.005,0.24±0.002and0.22±0.02,respectively,ThusF12canbeconsideredasaneffectivestimulatorofmacrophages.

简介：Recentresearchresultssuggestthatacidificationofacidsulfatesoilsmaybeinhibitedinwell-drainedestuarinefloodplainsineasternAustraliabytheabsenceofnaturalcreeklevees,Thelackofnaturalleveeshasallowedtheinuudationofthelandbyregulartidalfloodingpriortotheconstructionoffloodmitigationwork.Suchphysiographicalconditionspreventthedevelopmentofpre-draingaepyrite-derivedsoilacidifica-tionthatpossiblyoccurredatmanylevee-protectedsitesineasternAustralianestuarinefloodplainsduringextremelydryspells.Pre-drainageacidificationisconsideredasanimportantconditionforaccumulationofsolubleFeandconsequently,thecreationoffavourableenvironmentsforcatalysedpyriteoxidation.Undercurrentintensivelydrainedonditions,theacidmaterialsproducedbyongoingpyriteoxidationcanberapidlyremovedfromsoilporewaterbylateralleachingandacidbuffering,resultinginlowconcentrationsofsolubleFeinthepyriticlayer,whichcouldreducetherateofpyriteoxidation.

简介：Acoupledregionalclimateandaerosol-chemistrymodel,RIEMS2.0(RegionalIntegratedEnvironmentalModelSystemforAsia),inwhichanthropogenicsulfate,blackcarbon,andorganiccarbonwereassumedtobeexternallymixed(EM),internallymixed(IM)orpartiallyinternallymixed(IEM),wasusedtosimulatetheimpactsoftheseanthropogenicaerosolsonEastAsianclimatefortheentireyearof2006.Thedistributionsofaerosolmassconcentration,radiativeforcingandhencethesurfaceairtemperatureandprecipitationvariationsunderthreemixingassumptionsofaerosolswereanalyzed.Theresultsindicatedthatthemassconcentrationofsulfatewassensitivetomixingassumptions,butcarbonaceousaerosolsweremuchlesssensitivetothemixingtypes.ModeledresultswerecomparedwithobservationsinavarietyofsitesinEastAsia.Itwasfoundthatthesimulatedconcentrationsofsulfateandcarbonaceousaerosolswereinaccordwiththeobservationsintermsofmagnitude.ThesimulatedaerosolconcentrationsinIMcasewereclosesttoobservationresults.Theregionalaveragecolumnburdensofsulfate,blackcarbon,andorganiccarbon,ifinternallymixed,were11.49,0.47,and2.17mgm2,respectively.Theradiativeforcingofanthropogenicaerosolsatthetopoftheatmosphereincreasedfrom-1.27(EM)to-1.97Wm2(IM)whilethenormalizedradiativeforcing(NRF)decreasedfrom-0.145(EM)to-0.139Wmg1(IM).TheradiativeforcingandNRFwere-1.82Wm2and-0.141Wmg1forIEM,respectively.Thesurfaceairtemperaturechangesoverthedomainduetotheanthropogenicsulfateandcarbonaceousaerosolswere-0.067,-0.078,and-0.072K,withmaximaof-0.47,-0.50,and-0.49K,forEM,IM,andIEM,respectively.Meanwhile,theannualprecipitationvariationswere-8.0(EM),-20.6(IM),and-21.9mm(IEM),withmaximaof148,122,and102mm,respectively,indicatingthattheclimateeffectswerestrongerifthesulfateandcarbonaceousaerosolswereinternallymixed.

简介：FGSwasisolatedandpurifiedfromlaminariajaponicabyenzymolysis,chromatographymethodsandsoon.ThehighbloodfatmodelwasestablishedbyfeedingmouseonhighfatfeedstuffComparedwithcontrolgroup,theconcentrationofHDL-C,theratioofHDL-C/TCincreased;whiletheconcentrationofTC,LDL-CandTGdecreasedinexperimentalgroups.Conclusion:FGSwasaneffectiveserumhipidregulatorandcanbedevelopedasmedicineandheahhfood.

简介：<正>1IntroductionThereexistcalciumandsulfateionsoutsidesodiumchlorideinsolutionminingforcalciumsulfatebrine.Thecalciumandsulfateionsnotonlyaffectthepurityofthevacuumsaltproducts,butalsoincreasethescalingofvacuumevaporationtanksandbrinereusingpipes.Additiveshavecertainimpactsonthecrystallizationdynamics(Randolphetal.,1971).Thecrystallization

简介：Apotexperimentwasconductedtoinvestigatetheeffectsofvarioussoiltreatmentsonthegrowthofvetivergrass(Vetiveriazizanioides(L.)Nash)withtheobjectiveofformulatingappropriatesoilmediaforuseinsulfide-bearingminedareas.Anacidicminesiteacidsulfatesoil(pH2.8)wastreatedwithdifferentsoilconditionerformulaincludinghydratedlime,redmud(bauxiteresidues),zeoliticrockpowder,biosolidsandacompoundfertilizer.Soilstreatedwithredmudandhydratedlimecorrectedsoilacidityandreducedoreliminatedmetaltoxicityenablingtheestablishmentofvetivergrass.Althoughover-limingaffectedgrowth,someseedlingsofvetiversurvivedtheinitialstrongalkalineconditions.Additionofappropriateamountsofzeoliticrockpowderalsoenhancedgrowth,butover-applicationcauseddetrimentaleffects.Inthisexperiment,soilmediumwiththebestgrowthperformanceofvetiverwas50gofredmud,10goflime,30gofzeoliticrockpowderand30gofbiosolidswith2000gofminesoils(100%survivalratewiththegreatestbiomassandnumberofnewshoots),butaddingachemicalfertilizertothismediaadverselyimpactedplantgrowth.Inaddition,ahighapplicationrateofbiosolidsresultedinpoorergrowthofvetiver,comparedtoamoderateapplicationrate.

简介：FGS，isolatedfromthewatersolutionofenzymolyzedlaminariajaponica,isamixtureofacidtheroglycans.FourfractionsF1,F2,F3,andF4wereobtainedfromFGSbyionexchangechromatography.Afterfurtherpurifiedbygelfiltrationchromatographyonasepharose2Band6Bcolumn,weobtainedF9,F10,F11,andF12.Theyshowedsinglebandwhenidentifiedbyelectrophoresis.ThemolecularweightofF9,F10,F11,andF12wasestimatedtobe216,120.138and140kDrespectively.Theycontaineda-glucosidicbondbyIRand1H-NMRanalysis.ThetypicalabsorptionpeaksofthesepolysaccharideswereshowedinUVandIRspectra.Thesepolysaccharidescontainedrha,fuc,man,gal,anduronatewhenidentifiedbypaperchromatography(p.c)andgaschromatorgraphy(GC).Themolarratioofthesesugarswasalsoassayed.