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简介：与连续、慢的氧版本特征，过氧化钙(CaO_2)是在污染地下水的简历补习为氧气的微生物供应氧的新来源。批实验被进行评估在包含CaO_2的媒介与水，高酸碱值的规定，以及混合氧气的微生物的生长反应的氧版本率ofCaO_2。结果证明氧版本CaO_2comprises处理三个阶段。当CaO_2的增加的重量增加了，在第一个阶段，严厉地增加的水的溶解的氧层次，和一般水准，氧版本率增加了。然而，率几乎在后者阶段保持不变并且是约0.48和0.084mgO_2?h~(-1),分别地。作为媒介，钾dihydrogen磷酸盐(KH_2PO_4)和硫酸铵的必要部件((NH_4)_2SO_4)能在某个比率调整CaO_2from12.1引起到6.5的范围的酸碱值-8.5，它对微生物引起的生长有用。另外，在包含CaO_2的媒介观察的diauxicgrowth曲线建议混合氧气的微生物的生长能被CaO_2的增加刺激。

简介：Theassociationsofeachofmidecamycinandchloroquinephosphatetohydrogenperoxidewerestudiedbyusinglinear-potentialscanpolarography.Ina0.15mol/LKH2PO4-NaOH(pH7.4)buffer,theassociationratiooftheassociationcomplexofmidecamycintohydrogenperoxideis1∶1,andtheapparentassociationconstantis7.18.Whileina0.04mol/LNH3·H2O-NH4Cl(pH9.5)buffer,theassociationratioandtheapparentassociationconstantoftheassociationcomplexofchloroquinephosphatetohydrogenperoxideare1∶1and45.4,respectively.TheformationoftheassociationcomplexesstabilizesH2O2andresultsintheaccumulationofH2O2,whichisbanefultohumanbody.

简介：Theextractivereactionprocessofoxygen-workingsolution-waterthree-phasesystemfortheproductionofhydrogenperoxidebytheanthraquinonemethodwasinvestigatedinasieveplatecolumnof50mmininternaldiameter.Theoxidationreactionofanthrahydroquinoneintheworkingsolutionwithoxygenandtheextractionofhydrogenperoxidefromtheworkingsolutionintoaqueousphaseoccurredsimultaneouslyinthecountercurrentmode.Theagitatingeffectcausedbygaseousphasemadethedropletsofthedispersedphasebecomesmaller,thus,increasingtheliquid-liquidinterfacialcontactareasandresultingintheimprovementofthemasstransfervelocity.Resultsshowedthatthegas-agitationhadabeneficialeffectontheextractionofhydrogenperoxidefromtheworkingsolutionintotheaqueousphase;theconcentrationofhydrogenperoxideintheraffinatedecreasedwiththeincreaseofthegaseoussuperficialvelocities;andtheconcentrationofH2O2intheraffinateincreasedwiththeincreaseofthedispersedphasesuperficialvelocityatthesamesuperficialvelocityofthegaseousphase.IntheG-L-Lextractivereactionprocess,withtheincreaseofthegaseoussuperficialvelocities,boththeconversionoftheanthrahydroquinoneoxidationandtheextractionefficiencyofhydrogenperoxidefirstincreasedsignificantly,thenincreasedgradually.

简介：Thereactionofdifluorodiiodomethanewithalkynes(4a-e)inthepresenceofhydrogenperoxideaffordedthecorrespondingβ-iodo-α,β-unsaturatedcarboxylicacids.Whenpropargylicalcoholwasusedasthesubstrate,β-iodo-α,β-unsaturatedγ-butyrolactone(5f)wasproduced.Themechanismofthereactionwassuggested.

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简介：Aunanoparticles装饰了graphene(AuNPs@Gr)/nickel泡沫(Gr/NiF)nanocomposite(AuNPs@Gr/NiF)被AuNPs的electrophoretic免职在Gr/NiF上跟随的化学蒸汽免职准备。形态学，微观结构和同样准备的AuNPs@Gr/NiFnanocomposite的察觉到的性能被描绘并且测量，分别地由扫描电子显微镜，传播电子显微镜，紫外可见光谱学和化学工作站。同样准备的AuNPs@Gr/NiFnanocomposite被用作电极为氢过氧化物的察觉构造一个化学传感器(H2O2)。结果证明AuNPs在Gr/NiF的表面上同质地并且稳定地散布了。化学传感器展出敏感、选择的表演到H2O2.

简介：ThegreenandeffectiveBaeyer-Villigeroxidationreactionofcyclohexanoneforpreparingε-caprolactoneisofparticularimportanceinthesynthesisofnewpolymermaterials.WehavediscussedhereseveralmechanismtypesofBaeyer-VilligeroxidationofcyclohexanonewithH2O2indifferentreactionsystems.Fivemaintypeshavebeenaddressed,i.e.:(1)thenon-catalyzedreactiontype,wheretheC=OofketonesisactivatedbyH+,whichiselectrolyticallydissociatedfromH2O2andH2O,toimprovethecapabilityofC=Ogroupforacceptingtheelectronpairs;(2)thethermallyactivatedradicalreactiontype,wheretheCriegeeintermediateisproducedviatwostepsofradicalreactionwith·OHattack,withmuchmorehydroxylradicalsbeingexcitedinthepresenceofTS-1zeolite;(3)theBrnstedacidcatalysisreactiontype,wherebothO-OmoietyandC=OgroupcouldbeactivatedbyBrnstedacid;(4)thesolidLewisacidcatalyzedC=Oofthesubstrateactivationreactiontypethroughenhancingthedonor-acceptorinteractionbetweentheantibondingπ*C=OorbitalofcyclohexanoneandHOMOofSn-containingzeolites;and(5)thesolidLewisacidcatalyzedH2O2toformMe-OOHoxidativespeciesbyconvertingthehighestoccupiedmolecularorbital(HOMO)ofTi-OOHintoasinglyoccupiedmolecularorbital(SOMO),makingtheO-OgrouphighlyelectrophilictoattacktheC=OofcyclohexanoneduringtheBaeyer-Villigeroxidationprocess.Intheend,wehavealsocomparedthedifferentmechanismsandputforwardouropinionsonthedevelopmentdirectionofcatalyticmaterialsaimingateco-friendlyBaeyer-Villigeroxidationofcyclohexanoneintheyearstocome.

简介：有在170，180和190的温度从0.1wt%到1.0wt%的低过氧化物集中的高密度聚乙烯的Crosslinking反应

简介：AIMTo在氢过氧化物上探索parthenolide的效果(H2在人的透镜的O2)-inducedapoptosis上皮(HLE)apoptoticHLE房间的cells.METHODSThe形态学和数字用光被估计显微镜学和流动cytometry。房间生存能力被山试金测试。另外，相关蛋白质的表示被HLE房间的西方的污点assay.RESULTSApoptosis测量被200导致??丠?????あψ

简介：Anovelthird-generationhydrogenperoxide(H_2O_2)biosensor(Hb/CdS/MWNTs/GCE)wasfabricatedthroughhemoglobin(Hb)adsorbedontothemercaptoaceticacidmodifiedCdSQDs/carboxylmultiwallcarbonnanotubes'(MWNTs)films.CyclicvoltammogramofHb/CdS/MWNTs/GCEshowedapairofwell-definedandquasi-reversibleredoxpeakswithaformalpotential(E~0)of-0.230V(vs.Ag/AgCl)in0.1mol/LpH=8.0phosphatebuffersolution(PBS),whichwasthecharacteristicoftheHbhemeFe(Ⅲ)/Fe(Ⅱ)redoxcouple.ThebiosensorshowsanexcellentelectrocatalyticactivitytothereductionofH_2O_2.TheresponsetimeofthedesignedbiosensortoH_2O_2atapotentialof-0.30Vwaslessthan2sandlinearrelationshipswereobtainedintheconcentrationrangesof2.0×10~(-6)—2.7×10~(-3)mol/Land2.7×10~(-3)—7.7×10~(-3)mol/Lwithadetectionlimitof3.0×10~(-7)mol/L(S/N=3).TheapparentMichaelis-MentenconstantK_mwasestimatedtobe1.324mmol/LthatillustratedtheexcellentbiologicalactivityofthefixedHb.

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简介：AsimplemethodfortheoxidativearomatizationofHantzsch1,4-dihydropyridinestothecorrespondingpyridinesisachievedbyusinghydrogenperoxideasgreenoxidantandaceticacidascatalystinaqueoussolution.

简介：Directelectrochemicalformationofhydrogenperoxide(H2O2)frompureO2andH2oncheapmetal-freeearthabundantcatalystshasemergedasthehighestatom-efficientandenvironmentallyfriendlyreactionpathwayandisthereforeofgreatinterestfromanacademicandindustrialpointofview.Veryrecently,novelmetal-freemesoporousnitrogen-dopedcarboncatalystshaveattractedlargeattentionduetotheuniquereactivityandselectivityfortheelectrochemicalhydrogenperoxideformation[1–3].Inthiswork,weprovidedeeperinsightsintotheelectrocatalyticactivity,selectivityanddurabilityofnovelmetal-freemesoporousnitrogen-dopedcarboncatalystfortheperoxideformationwithaparticularemphasisontheinfluenceofexperimentalreactionparameterssuchaspHvalueandelectrodepotentialforthreedifferentelectrolytes.Weusedtwoindependentapproachesfortheinvestigationofelectrochemicalhydrogenperoxideformation,namelyrotatingring-diskelectrode(RRDE)techniqueandphotometricUV–VIStechnique.Ourelectrochemicalandphotometricresultsclearlyrevealedaconsiderableperoxideformationactivityaswellashighcatalystdurabilityforthemetal-freenitrogen-dopedcarboncatalystmaterialinbothacidicaswellasneutralmediumatthesameelectrodepotentialunderambienttemperatureandpressure.Inaddition,theobtainedelectrochemicalreactivityandselectivityindicatethatthemechanismsfortheelectrochemicalformationanddecompositionofperoxidearestronglydependentonthepHvalueandelectrodepotential.

简介：新奇结合的聚合物，poly(1)，在主要的链包含thiourea一半经由联合反应的铃木被综合。亚铜的离子的增加熄灭荧光(1)而荧光在另外的金属离子的增加之上稍微变化，poly展出荧光灯向Cu+察觉到能力的几乎转弯。当氢过氧化物被加到poly包含的答案(1)和Cu+,Cu时，+被氧化进导致荧光恢复的Cu2+,。H2葡萄糖oxidase(上帝)免除葡萄糖氧化的O2也恢复了荧光poly(1)/Cu+答案。结果显示(1)poly，/Cu+答案能为氢过氧化物和葡萄糖用作一个察觉到的平台。

简介：Theepoxideisakindofversatileintermediateformanufactureofawidevarietyoffinechemicals.Thegoalofmodemefficientcatalyticmethodsistoproducedesiredcompoundswithhighyield,selectivity,lowcost,safety,operationalsimplicityandmoreimportantlyenvironmentallybenignmanner.However,therearevariousoxidants,whichareoftenhazardousorexpensive,beingusedforbothlaboratoryandindustrialepoxidation.Hydrogenperoxide(30wt%)solutionisthoughtasoneoftheidealoxidantsbecausewaterisasoletheoreticalsideproduct.Meanwhiletheepoxidationofstyreneisatypicaloneamongolefins.Here,theperformanceofstyreneepoxidationwasstudiedwithhydrogenperoxidesolutioncatalyzedbyCo(Ⅱ)phenanthrolinecomplexencapsulatedinsupercagesofMCM-41.

简介：Theactiveingredientofginseng,ginsenosidesRg1,hasbeenshowntoscavengefreeradicalsandimproveantioxidantcapacity.ThisstudyhypothesizedthatginsenosidesRg1hasaprotectiveroleinhumanneuroblastomacellsinjuredbyH_2O_2.GinsenosidesRg1atdifferentconcentrations(50and100μM)wasusedtotreatH_2O_2(150μM)-injuredSH-SY5Ycells.ResultsdemonstratedthatginsenosideRg1elevatedthesurvivalrateofSH-SY5YcellsinjuredbyH_2O_2,diminishedtheamountofleakedlactatedehydrogenase,andincreasedsuperoxidedismutaseactivity.GinsenosideRg1effectivelysuppressedcaspase-3immunoreactivity,andcontributedtoheatshockprotein70geneexpression,inadose-dependentmanner.TheseresultsindicatethatginsenosideRg1hasprotectiveeffectsonSH-SY5YcellsinjuredbyH_2O_2andthatitsmechanismofactionisassociatedwithanti-oxidationandtheinhibitionofapoptosis.

简介：Thispaperreportsthatanatmosphericpressuredielectricbarrierdischargeplasmajet,whichusesargonorargon+hydrogenperoxidevapourastheworkinggas,isdesignedtosterilizethebacillussubtilis.Comparedwiththepureargonplasma,thebacterialinactivationefficacyhasasignificantimprovementwhenhydrogenperoxidevapourisaddedintotheplasmajet.Inordertodeterminewhichfactorsplaythemainroleininactivation,severalmethodsareused,suchasdeterminationofopticalemissionspectra,hightemperaturedryairtreatment,proteinleakagequantification,andscanningelectronmicroscope.Theseresultsindicatethatthepossibleinactivationmechanismsarethesynergisticactionsofchemicallyactivespeciesandchargedspecies.

简介：InAugust2008thenewtechnologyformanufactureofpro-pyleneoxidethroughdirectoxidationofpropylenebyhy-drogenperoxidedevelopedbyDalianInstituteofChemicalPhysics(DICP),CAShaspassedtheexperts'appraisalor-ganizedbytheScienceandTechnologyDepartmentofLiaoningProvince.Itistoldthatthisnewtechnology,beinganenvironmentallyfriendlynewprocess,willeventuallyput