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简介：AnewchemilurninescencelabelN-(β-carboxypropionyl)luminol(CPL)wasusedtolabelsheepanti-humanIgG(SaHIgG).Thelabeledantibodywasstableandcouldbedetectedatleastdownto10-17~10-16mol.Themolarincorporationratiowasestimatedtobe0.26molofCPLpermolofSaHIgG.TherewerenoapparentchangesintheimmunoreactivityofthelabeledSaHIgGandinthequantumefficiencyoftheCPLafterlabeling.

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简介：ＯｎＳｏｄｉｕｍＣｌｕｓｔｅｒＣｏｌｌｉｓｉｏｎＤｙｎａｍｉｃｓＯｎＳｏｄｉｕｍＣｌｕｓｔｅｒＣｏｌｌｉｓｉｏｎＤｙｎａｍｉｃｓ￥ＺｈａｎｇＦｅｎｇｓｈｏｕ；Ｅ．ＳｕｒａｕｄａｎｄＲ．ＧｌｏｗｉｎｓｋｉＡｄｉｓｔａｌｌｃｅ－－ｄｅｐｅｎｄｅｎｔｔｉｇ...

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：ToimprovethewatertreeresistanceofPE,linearlow-densitypolyethylene(LLDPE)wascompoundedwithsodiumacrylate(NaAA)forinsitupolymerization,inwhichNaAAwasformedthroughtheneutralizationofacrylicacid(AA)withsodiumhydroxide(NaOH)beforeaddingdicumylperoxide(DCP)toinitiatetheinsitugraftpolymerizationandhomopolymerization.AseriesofLLDPE/NaAAcompoundswereinvestigatedfortheirwaterabsorptionratio(WAR)measurement,watertreeing,mechanicalanddielectricproperties.TheresultsstronglysuggestthatNaAAcanimprovethewatertreeresistanceofLLDPE.Inaddition,theLLDPE/NaAAcompoundspossesssatisfactorymechanicalpropertiesanddielectricproperties.CharacterizationofLLDPE/NaAAcompoundsbyusingFouriertransforminfraredspectrometry(FTIR)suggeststhattheneutralizationandpolymerizationreactioncouldbeachievedeffectively.UsingadequateDCPcontentisthekeyfactorforcontrollingthepolymerizationofNaAAwithpreciseconversionratio.

简介：有压克力酰胺(AM)的藻朊吃了的钠的接枝共聚物(SA)用一个ceric离子被综合开始的答案聚合技术。压克力酰胺变换被改变反应条件学习，例如温度，藻朊吃了的钠的分子的重量和反应时间。接枝共聚物的絮凝表演(下垂)在染浪费水在白陶土暂停并且也被调查。下垂，这被发现在染废水在白陶土暂停，并且在为CODCr和colority的移动能力作为与polyacrylamide和SA相比在絮凝行为是更有效的。

简介：Thereexistsauniversalphenomenathatsodiumionsareleakedfromthestrongbasicanionexdchangerinoperation,whichhasbeenpuzzlingtheresearchersworkinginthefieldofwatertreatmentforyears.Itiswellknownthattheleakageofsodiumionswillseriouslyaffectthepruityofeffluent.Onthebasisoflotsoflaboratoryandindustrialexperiments,themechanismofthesodiumionsleakedfromananionexchangerhasbeenpreliminarilymadeoutandsomenewchemicalreactionequationsaswellassomeimprovingmeasureshavebeenputforwardinthisarticle.

简介：Microwaveradiationwasappliedtothedetectionofmetamizoiesodiumbycyclicvoltammetry.TheelectrochemicalcharacteristicsofmetamizoiesodiumwerestudiedbycyclicvoltammetryatGCelectrodeundermicrowaveradiationandaconsiderablecurrentenhancementwasobservedformetamizoiesodiuminaqueous0.05mol/LH_2SO_4.Undertheoptionalconditions,metamizoiesodiumwasdeterminedintheabsenceandpresenceofmicrowaveactivation.Intheabsenceofmicrowaveactivationcyclicvoltammogramofmetamizoiesodiumshowsgoodlinearrelationshipinaconcentrationrangeof8.0×10~(-5)—1.0×10~(-3)mol/Linaqueous0.05mol/LH_2SO_4withadetectionlimitof6.75×10~(-6)mol/L(S/N=3)andtheequationoflinearregressionisI_p=12.973c-0.1905(R~2=0.9996,n=6);inthepresenceof80Wmicrowaveactivationcyclicvoltammogramofmetamizoiesodiuminshowsgoodlinearrelationshipinaconcentrationrangeof4.0×10~(-5)—1.0×10~(-3)mol/Linaqueous0.05mol/LH_2SO_4withadetectionlimitof4.41×10~(-6)mol/L(S/N=3)andtheequationoflinearregressionisI_p=25.107c-0.1193(R~2=0.9973,n=7).Thecurrentinthepresenceof80Wmicrowaveactivationincreasestoabout2ordersofmagnitudecomparedwiththatintheabsenceofmicrowaveactivation.Theproposedmethodinthepresenceofmicrowaveactivationshowedhighselectivityandsensitivity,andthesamplingofthedisposalmethodissimple.ThemethodwasverifiedbythedeterminationofMetamizoieSodiumtabletwithsatisfactoryresults.

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简介：钠tetrafluoroborate(NaBF4)被发现在没有溶剂的条件下面与醛和酉同类催化吲哚的electrophilic替换反应负担得起相应二度(indolyl)在高收益的甲烷。

简介：Theadditionofsodiumperfluoroalkanesulfinates（RFSO2Na）tovariousolefins（CH2=CHR）initiatedbyFentonreagent(Fe2+-H2O2)inthepresenceofsodiumazidegavetheadduetsRFCH2-CHN3Ringoodyield.AradicalmechanismwasproposedbasedontheEPRandotherevidences.TheadductswerereadilyreducedthroughcatalytichydrogenationtogivethecorrespondingaminesRFCH2CH（NH2）Rinhighyield.Thereactionrepresentsaconvenientandeffectiveroutetotheseusefulorganofluorinecompounds.

简介：由支持硅石的钠氢硫酸盐的本甲基酉旨的新debenzylation被描述。debenzylation能有选择地并且高效地被完成在对没有影响象nitro，不饱和的契约，和乙醇酉旨那样的敏感的功能的组的优秀收益好。

简介：非结晶的Na的结晶化被使用分子的动力学方法模仿，并且原子簇的进化被我们以前建议了的簇类型索引方法(CTIM)跟踪。结晶化过程展出成核的三个不同阶段，这被表明，原子核的随后的生长并且水晶谷物变粗。尺寸和簇的内部结构在决定它是否是一个原子核起关键作用。跟踪分析的簇能比另外的方法更清楚地并且精确地识别不同结晶化阶段。同时，模拟结果能为以前获得的试验性的现象在原子水平提供合理解释。

简介：TheelutionofWO4^2-ionsbyNaOH、NaNO3、NaClandNH4ClonstrongbasicanionexchangeresinsinquaternaryammoniumformIandtheadsorptionpropertiesafterelutionwerestudied.Inaddition,theelutioncurve,thepermeationcurveandtheexchangecapacitiesofoperationwerepresented.TheeluatecontainingtungstenwithhighcontentandexcessiveeluantoflowcontentwereobtainedbyemployingtheprocessofelutingusingmixedsolutionofNaClandNaOH.It′spossibletoobtainNa2WO4·2H2Owithhighpuritybyevaporatingandcrystallizingtheeluate.TheresultsofmixedelutionshowedthatthediffusioncoefficientsofCl^-、OH^-andWO4^2-ionsinsolutionorexchangeagentvariedduetothecoexistenceofcounterionsandthentheexchangevelocityofWO4^2-→Cl^-andWO4^2-→OH^-wasaccelerated.

简介：Thechemicalgraftingofthiolterminatedpoly（sodiumstyrenesulfonate）（HS-PSSS）chainsfromsodiumnitrate（NaNO3）saltsolutiontoagoldsurfacewasinvestigatedwithaquartzcrystalmicrobalancewithdissipationmonitoring（QCM-D）indifferentsaltconcentrations.ItwasfoundthatatlowsaltconcentrationgraftingdensityofHS-PSSSwaslowandthegraftedchainsadoptedamushroomconformation.Withtheincreaseofsaltconcentrationpolyelectrolytechainsunderwentatransitiontowardcoiledstateduetoreductionofelectrostaticrepulsionandasaresultmorechainsweregraftedonthesurface.WhenthegraftingdensityreachedacertainlimitafterwhichfurthergraftingcausedrepulsionbetweenalreadygraftedHS-PSSSchainsandasaresultgraftedchainsadoptedabrushconformation.

简介：Metamizolesodiumwaschosenasarepresentativeofunstableanalytesforinvestigationbydiscussingtheeffectsofoxygenandsolventonitsdegradationreactionusingthecapillaryelectrophoresistechnique.Apossibledegradationmechanismwasdeducedfromtheobservedbehaviorandwasconfirmedbyinfra-redspectroscopicstudy.Thedegradationreactioncouldbeinhibitedobviouslybymethanolinsteadofwaterasthesolventofanalyte.Undertheoptimizedconditions:separationvoltageof20kV,and5mmol/Ldisodiumhydrogenphosphateand5mmol/Lboraxwith10%methanol(pH9.12)astherunningbuffer,thestandardcurveofmetamizolesodiumwaslinearinarangeof3.77—74.07mg/L.Asatisfactoryresultwasachievedwhenthetechniquewasusedtodetectmetamizolesodiumintablet.

简介：ReactionofperfluoroalkyliodideswithaseriesofalkynesundersulfinatodehalogenationconditiongaveamixtureofE/Zadductsveryreadilyinhighyield,thusconstitutedamild,convenientandeffectivenewmethodfortheadditionofperfluoroalkyliodidestoalkynes.Underthesamecon-dition,inthepresenceof1-hexyneperfluoroalkylbromideand1,1,1-trichlorotrifluoroethanereactedonlytogivesulfinatesasthemajorproducts.Aradicalmechanismwasproposedfortheadditionreaction.

简介：Cellulose,themostabundantorganicpolymeronEarth,isasustainablesourceofcarbontouseasanegativeelectrodeforsodiumionbatteries.Here,hardcarbons（HC）preparedbycellulosepyrolysiswereinvestigatedwithvaryingpyrolysistemperaturefrom700°Cto1600°C.CharacterisationmethodssuchasSmallAngleX-rayScattering（SAXS）measurementsandN2adsorptionwereperformedtoanalyseporositydifferencesbetweenthesamples.Thegraphenesheetarrangementswereobservedbytransmissionelectronmicroscopy（TEM）:anorderingofthegraphenesheetsisobservedattemperaturesabove1150°Candsmallcrystallinedomainsappearover1400°C.Asthegraphenesheetsstarttoalign,theBETsurfaceareadecreasesandthemicroporesizeincreases.Tocorrelatehardcarbonstructuresandelectrochemicalperformances,differenttestsinNa//HCcellswith1MNaPF6ethylenecarbonate/dimethylcarbonate（EC/DMC）wereperformed.Samplespyrolysedfrom1300°Cto1600°Cshoweda300mAh/greversiblecapacityatC/10rate（whereC=372mA/g）withanexcellentstabilityincyclingandaverygoodinitialCoulombicefficiencyofupto84%.Furthermore,hardcarbonsshowedanexcellentratecapabilitywheresodiumextractionratevariesfromC/10to5C.At5Cmorethan80%ofreversiblecapacityremainsstableforhardcarbonssynthesizedfrom1000°Cto1600°C.

简介：Theaqueouspolymerizationofmethylmethacrylateintiatedbycopperpolypropylene-basedpoly(oxime-imidodiacetate)(P-Cu)-sodiumsulfitesystemhasbeeninvestigated.Theoverallrateofpolymerization(Rp)wasfoundtobeRp=5.8×10^12e^-84.1KJ/RT[MMA]^1.4[P-Cu]^0[Na2SO3]^0.50Amechanismof“coordination-protontransfer”fortheproductionofinitiatingspecieswasproposedanddiscussed.