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

简介：Ｐｈａｓｅ　Ｔｒａｎｓｉｔｉｏｎｓ　ｉｎ　Ｓｏｄｉｕｍ　ＣｌｕｓｔｅｒｓＰｈａｓｅＴｒａｎｓｉｔｉｏｎｓｉｎＳｏｄｉｕｍＣｌｕｓｔｅｒｓ￥ＺｈａｎｇＦｅｎｇｓｈｏｕ；Ｅ．ＳｕｒａｕｄａｎｄＲ．ＧｌｏｗｉｎｓｋｉＭｏｓｔｏｆｔｈｅｔｈｅｏｒｅｔｉｃａｌ...

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：<正>1IntroductionSodiumboratesasimportantrawmaterialsarewidelyusedinthefieldofglassindustry,ceramicindustry,medicalindustry,paperindustry,agricultureandsoonfor

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：<正>1IntroductionAnhydroussodium,mainlyproducedintheUnitedStates,Canada,Japan,isindispensablecommoditiesandrawmaterialsindailylifeandindustry.Inrecentyears,anhydroussodiumsulfateofgeneralsizewasmuchoversupplied[1].Howeverparticlesanhydroussodiumsulphateoflargesizeisnotadequatetothedemandforits

简介：用ＥＤＴＡ可增强Ｆｅ２＋催化鲁米诺与溶解氧的发光反应，将ＥＤＴＡ加入鲁米诺溶液中可使流动注射分析测亚铁的检出限降低约１６０倍。在流动注射分析的试样分流路中使用新型的锌镀铜微还原柱，可同时测定Ｆｅ２＋和Ｆｅ３＋。该微还原柱可至少测定３０００个试样。测定Ｆｅ２＋和Ｆｅ３＋的线性范围是１×１０９～１×１０５ｍｏｌ·Ｌ１，检出限分别为２．７×１０１０和３．５×１０１０ｍｏｌ·Ｌ１，测定试样的速率为６０ｈ１。Ｃｒ３＋和Ｃｏ２＋有干扰。测定混合物中的Ｆｅ２＋和Ｆｅ３＋获得满意结果，测试样的结果同标准的分光光度法结果一致。实验表明，ＥＤＴＡ起增强剂的作用，Ｆｅ２＋是催化剂，而溶解氧是氧化剂。对反应机理进行了讨论。

简介：Sodiumnitroprussideismainlyusedtoreducebloodpressureandcontrolcardio-vasculardiseases.Thisstudyistoinvestigatetheeffectofsodiumnitroprussideonthecardiovas-cularmechanics.Eightmalemongreldogswereused.Anesthetizedwithsodiumpen-tobarbital,thedogswerecatheterizedontheleftfemoralarterytorecordbloodpres-sure.Electromagneticcuff-typeflowtransducerwasfixedonascendingaortatomea-

简介：ThefeasibilityofusingsodiumsulfideasthesolemodifierfortheflotationofXinhuamolybdeniteorewasexamined.Thepotentialmechanismsinvolvedinthedifferentflotationsystemswerediscussed.Thecomparativeflotationresultsrevealthatinthekerosene-sodiumsilicateflotationsystem,betterrecoveryandgradeofthemolybdenumareobtainedusingsodiumsulfideastheslurrypHadjustmentagentthanusingCaO.Undertheoptimalconditions(64g/tkeroseneand6kg/tNa2S),satisfiedrecoveryandgradeofmolybdeniteconcentratecanbeachieved(84%and8.2%,respectively),indicatingthatsodiumsulfideisapotentialsubstitutemodifierofsodiumsilicate.Theopen-circuitflotationtestresultsfurtherconfirmtheeffectivenessofsodiumsulfidewhichmayrenderrecyclingthetailingwaterpossibleandmaketheflotationprocessmoreenvironmentalacceptableandmoreeconomicalduetothelessuseofkeroseneandscavengers.

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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：酸的分解的动力学在气压下面与一个钠氢氧化物系统溶解了钛炉渣被学习。钛抽取上的反应温度，粒子尺寸和NaOH-to-slag集体比率的效果被调查。结果证明温度和粒子尺寸在钛抽取上有重要影响。有化学反应的缩小的核心模型控制了的钛抽取表演的试验性的数据过程为炉渣的分解是很适用的，与62.4kJ·mol−1的一个明显的激活精力。钛的约85wt.%−90wt.%能在最佳的条件下面从炉渣被提取。另外，在产品获得的钛二氧化物的纯净直到98.5wt.%。

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：Studyonoxidizingcelluloseto2,3-dialdehydecellulosebysodiumperiodate(NaIO4)wascarriedout.TheeffectsofreactionconditionssuchaspHofsolution,temperature,oxidantconcentration,oxidationtime,theparticlesizeof2,3-dialdehydecelluloseandalkalitreatmenttemperatureonthedialdehydeconcentrationofcellulosewereinvestigatedindetail.Theresultsshowthatthealdehydegroupcontentwascreatedwhilereactiontemperatureandalkalitreatmenttemperatureincreased.Themostprincipalfactorsaffectingthealdehydegroupcontentof2,3-dialdehydecellulosewerefoundoutandthebestoxidationconditionswereasfollows:thepHwas2,thereactiontemperaturewas45℃,themassratioofcellulosetoNaIO4was1/2,thereactiontimewas4h,thealkalitreatmenttemperaturewas70℃andsmallerparticlesizewas0.80mm.

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