简介：Toexaminetheeffectivenessofirondust-zeolitecompositeasanadsorbentfortheremovalofheavymetalionsfromaqueoussolutions,theadsorptionisotherms,thekinetic,thermodynamicandoptimumconditions,suchasinitialconcentration,pH,contacttime,adsorbentdosageandcompetitiveadsorptionconditionsofheavymetalswereinvestigated.ThecharacterizationofthecompositewascharacterizedviaFTIR,SEM,XRFandXRDmethods.Kineticresultsontheremovalofheavymetalionsfromaqueoussolutionshavebeenwelldescribedbythepseudo-second-ordermodel.TheadsorptiondataforCdandNiionswerefittedwellwiththeLangmuirandFretm-dlichisothermmodels,respectively.Themaximumadsorptioncapacitiesofirondust-zeoliteforCdandNiionswereequalto78.125and76.33mg/g,respectively.Thethermodynamicparameterssuchasenthalpy,entropyandfreeenergyofadsorptionofmetalionsweredetermined.Itwasfoundthattheprocessisendothermic,favorableandspontaneous.ThecompetitiveadsorptionabilityofheavymetalionsinthebinarysystemonthecompositeshowedthatCdionshadasynergisticeffectontheadsorotionofNiandNiionshadthenegativeeffectonCdadsorption.

简介：Viaseveraltechniquestomodifysensitivematrixforinhabitingtheleakageoffluorescentindicator,anewstablesensingmaterialformonitoringphosphateshasbeenpreparedandappliedtothemeasurementofphosphatesinartificialseawater.ItisbasedonthereactionofPO3-4withAl(Ⅲ)-Morinthatleadstothefluorescencequenchingofthecompositematrix.AtpHvalue4.0andthesalinityvalue25.0,theresponsetimeofoutputsignalhavingreachedthesteadystateislessthan300seconds.ItscalibrationgraphisgainedintherangeofH2PO-4massconcentrationfrom1.50to7.00μg/mLwiththelimitofdetection(3σ/K)0.02μg/mL.Whenitwasusedtomeasurephosphatesinartificialseawater,therecoveryrangedfrom96.78%to102.09%.Beingstoredunderthepropercondition,themembranesmaintainsensitivefor90-120days,andareabletobeusedfor50-80timeswithindicatorsupplement.

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简介：硝酸的合成材料氧化了multiwalled碳nanotube(MWNT)和Nafion被准备。如此的合成在一个玻璃质的碳电极上被修改由微分搏动的voltammetry决定铅的踪迹。在pH=6.47NaNO3答案，Pb2+离子在修改电极上被积累在?0.4V。与相比一赤裸并且一部Nafion电影涂的电极，合成涂的GC电极能减少积累的潜力并且消除水银的有毒的特性。刻度情节在5.0桳潩的低集中是线性的吗？

简介：Montmorillonite(MMT)wasdirectlymodifiedwithhexadecyltrimethylammoniumbromide.Theinterlayerspacingoftheorganophilicmontmorillonite(organo-MMT)correspondingtothed(001)planepeakwas2.21nm.Theinfluencesofthecontentoforgano-MMTandmixingconditionsincludingmixingtemperatureandmixingtimeontheintercalationandexfoliationstructuresofMMT/epoxyresincompositeswereinvestigatedbywideX-raydiffraction(WXRD).TheX-raypatternsrevealthatorgano-MMTwasintercalatedbytheepoxyresinduringmixingprocess.Onlyundercertainmixingconditions,couldtheexfoliationnanocompositesbeformed.Themechanicalandthermalpropertiesofthecompositesweremeasured.TheresultsindicatethatthecompositeshavebettermechanicalpropertiesandhigherTgthanthoseofthepristineepoxyresin.

简介：Differentialproteinsexpressinginectopicandeutopicendometriawereinvestigatedbymeansofproteomicanalysis.Fivepatientsinsecretaryphasewerediagnosedasendometriosisbylaparoscopy.Thefiveectopicendometria(twoatstageⅡ,twoatstageⅢandoneatstageIV)andfiveeutopicendometriaweresurgicallyexcised.One-dimensionalelectrophoresiscoupledwithliquidchromatographyandmassspectrometrywasusedtoscreenandidentifydifferentialproteins.Threedifferentialbandsinone-dimensionalelectrophoresiswereresolvedbyliquidchromatographyandmassspectrometryand14up-regulatedproteinswereidentified,includingcollagenα-1,α-2,α-3(VI),α-1(XIV)chain,actin,annexinA2,EMILIN-1,ferritinlightpolypeptidevariant,fucosyltransferase10,myosin-9,proteinS100-A9,KIAA1783protein,andtwohypotheticalproteins.Ourdataprovidesalistofpotentialbiomarkersforendometriosis.Theidentificationsmaybeusedtodevelopnewdiagnosesforendometriosis.

简介：Graphenenanosheets(GS)wereeasilypreparedthroughliquid-phaseexfoliationofgraphitepowderinN,N-dimethylformamide(DMF)withtheassistanceofsodiumcitrate.Then,GSwascoatedontoaglassycarbonelectrode(GCE)surfacebydroptofabricateaGS/GCEnanointerface.Subsequently,byusingtetraethylorthosilicatesolasprecursor,nanosilicawaselectrochemicallydepositedontotheGS/GCEsurfacetoproduceananocompositefilmelectrode(nanosilica/GS/GCE).Electrochemicalbehaviorsofmethylparathion(MP)onthenanosilica/GS/GCEsurfacewereinvestigatedthoroughly.Itwasfoundthatthenanosilica/GSnanocompositescanimprovetheredoxpeakcurrentsofMPsignificantlyduetothesynergeticeffect.TheoxidationpeakcurrentwaslinearlyrelatedtoMPconcentrationintherangefrom0.0005mmol/Lto5.6mmol/L.Thedetectionlimitwascalculatedtobe0.07nmol/L(S/N=3).ThedevelopedmethodwasusedtodetermineMPinrealsamples.Therecoverieswereintherangefrom95.4%to104.2%,demonstratingsatisfactoryresults.

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简介：Fe2O3solwiththeparticlediameterof3-5nmwasflocculatedbytheadditionofSDS,andtheflocculateformedwasredispersedbythefurtheradditionofthatsurfactant.ThusthesurfactantbilayerwasformedonthesurfaceofFe2O3.Theemulsionpolymerizationofstyrene(St)adsolubilizedonthesurfactantadsorbedbilayerwascarriedoutbyinitiatorpotassiumpersulfate(KPS).TheUV-Visandsurfacephotovoltagespectra(SPS)indicatethattheFe2O3particleswereencapsulatedinpolystyrene(PSt)successfully.

简介：通讯因素分析(CFA)被采用学习14个HPLC系统的选择。测试LC系统作为反向阶段被分类(RP)，离子交换(IE)和吸水的相互作用层析(HILIC)模式。HILIC列上的吸水的溶质的保留被秒顺序效果显著地除他们的吸水的性质以外影响，这被发现。硅石表面上的器官的修饰词和残余silanol组两个都参予了保留。Hypersil？氨基的列以适当条件在HILIC模式执行了分离，并且它的保留机理比(aspartamide)HILIC，柱涂渍poly组织更类似于HILIC硅石列的。

简介：MtDNAwassuccessfullyextractedfromtenindividualbones(femurs)inthetombsofancientJushiinTurfanbasin,datedbacktotheyearabout3000-2500yearsago.Bymeansoffouroverlappingprimers,wegotnucleotidesequenceofthe218bplength.AncientmtDNAwasanalyzedbythesequencingofhypervariableregionⅠofthemtDNAcontrolregion.Theresultshowsthat9haplotypeswith24polymorphicsiteswereobtained.ThephylogeneticanalysisindicatedthatMongoliansandAltaiarethepopulationgeneticallyclosesttotheJushigroupsandJushimtDNApoolbeinganadmixtureofeasternAsianandEuropeanlineages.SoourpreliminarydataimplythatanancientminglingofEuro-AsianpopulationhadexistedinTurfanbasinpriortotheearlyIronAge.

简介：ThehydrogenbondpercentageanditstemperaturedependenceofthethreeTPUsamplessynthesizedfrompolytetrahydrofuran,4,4-diphenylmethanediisocyanate,N-methyldiethanolamineor1,4-butanediolwerestudiedbymeansofIRthermalanalysis.TheenthalpyandtheentropyofthehydrogenbonddissociationweredeterminedbytheVantHoffplot.

简介：Combinedwithflow-injection(Fl)technology,asimplechemiluminescence(CL)methodwasdevelopedforhydrazinedeterminationinthispaper.ItwasfoundthathydrazinecouldgreatlydecreasethestrongCLsignalproducedbythereactionbetweenluminolandhexacyanoferrate(Ⅲ)inalkalinemedium.ThedecreasedCLintensitywaslinearwithhydrazineconcentrationintherangeof5.0×10-9gmL-1to4.0×10-5gmL1,andthelimitofdetectionwas2.0×10-9gmL-1(3σ)witharelativestandarddeviationof2.4～4.1%(n=5).

简介：ＡＰＰＬＩＣＡＴＩＯＮ　ＯＦ　ＷＡＸＤ　ＡＮＤ　ＳＡＸＳ　ＴＯ　ＳＴＲＵＣＴＵＲＡＬ　ＡＮＡＬＹＳＩＳ　ＯＦ　ＰＡ１０１０＋ＢＭＩＡＰＰＬＩＣＡＴＩＯＮＯＦＷＡＸＤＡＮＤＳＡＸＳＴＯＳＴＲＵＣＴＵＲＡＬＡＮＡＬＹＳＩＳＯＦＰＡ１０１０＋ＢＭＩ￥Ｈｏｎ...

简介：Arapidandeffectivemethod,solidphaseextractioncoupledwithhighperformanceliquidchromatography(SPE-HPLC),wasappliedtotheseparationandanalysisofginsenosides.WatersOASISHLBwasusedforconcentratingandpurifyingsamplesandAlltimaC_(18)(53mm×7mm,3μm)chromatographycolumnwasusedforseparatingginsenosideRg_1,Re,Rb_1,Rc,Rb_2andRd.Theseginsenosideswereanalyzedwithin20mininourgradientelutionprocessandtheequilibriumtimeofthechromatographycolumncostonly5min.Moreover,therewasnoobviousbaselinedriftinourexperiment.Thismethodwasusedtoanalyzethecontentsofginsenosidesindifferentginsengproductsforqualitycontrol.Fourginsengproductswerestudied,includingtwokindsofcapsules,onekindoftabletandonekindofinjection.Theresultsshowthatthemethoddevelopedinthispaperhadgoodaccuracy,linearityandprecision.Therefore,thismethodcouldbeappliedinqualitycontrolofginsengproducts.

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简介：有核心壳的合成nanoparticles组织的Cross-linked-cyclodextrinpolymer/Fe3O4在carboxymethyl-cyclodextrin的表面上经由生气连接反应被准备(厘米--CD)在-cyclodextrin的修改Fe3O4nanoparticles由把epichlorohydrin用作crosslinking的碱的答案代理人。准备合成nanoparticles的形态学，结构和磁性被传播电子显微镜学(TEM)调查，Fourier变换红外线(FTIR)spectrometry，X光检查衍射(XRD)测量，thermogravimetric分析(TGA)和颤动的样品magnetometry(VSM)分别地。

简介：Thedye-dopedsilicananoparticlescanbeusedasnanobiosensorsthatareabletorecognizeanddetectspecificDNAsequence.Inthispaper,sphericalnanosizedluminol/SiO2compositeparticleshavebeensynthesizedwithreversemicellsviahydrolysisoftetraethylorthosilicate(TEOS)inthemicroemulsion.ThenanoparticlesweremodifiedwithchitosanandusedtolabelDNA,formingtheDNAprobewhichwasusedtohybridizewithtargetDNAimmobilizedonaPPymodifiedPtelectrode.Thehybridizationeventswereevaluatedbyelectrogeneratedchemiluminescence(ECL)measurementsandonlythecomplementarysequencecouldformadouble-strandedDNA(dsDNA)withDNAprobeandgivestrongECLsignals.Athreebasemismatchsequenceandanon-complementarysequencehadalmostnegligibleresponses.Duetothelargenumberofluminolmoleculesinsidesilicananoparticles,theassayallowsdetectionatlevelsaslowas2.0×10^-12mol/LofthetargetDNA.TheintensityofECLwaslinearlyrelatedtotheconcentrationofthecomplementarysequenceintherangeof5.0×10^-12—1.0×10^-9mol/L.

简介：InanefforttoutilizeNMRtechniquefortheanalysisofthestructuralcomponentsofwoodandbiomassessuchaslignin,wemadeacomparativestudyoflignincontentsofseveraltypesoflignocellulosicmaterialsbothbeforeandafterenzymatichydrolyses.Tothisend,EucalyptusGlobulus,Norwaysprucethermomechanicalpulp(TMP)cornstoverandEucalyptuskraftpulpwereball-milledandtreatedwithcellulasetopreparematerialswithhighlignincontents.Thesematerialswereanalyzedvia31PNMRinionicliquids.Theresultsshowthatthecontentsofvariousfunctionalgroupsforthelignocellulosicmaterialsafterenzymatichydrolysesaregenerallyinagreementwiththosefromtheircorrespondingenzymaticmildacidolysisliginins(EMALs),indicatingthat31PNMRanalysisoflignocellulosicmaterialsinionicliquidsisapromisingmethodforquantitativecharacterizationoflignocellulosicmaterials.