简介：Biodiesel(fattyacidalkylesters),analternatetofossilfuel,hasthetendencyofautoxidationandhencerequiresantioxidantsforlongtermstorage.TheinfluenceofsyntheticandnaturalantioxidantsontheoxidativestabilitywasanalysedforfreshFAMEs(fattyacidmethylesters)obtainedfromheveabrasiliensisat140C.HigheractivitywasobservedforsyntheticantioxidantsfollowingtheorderofGA>BHT>DTBP>Q>GT-M>PH-M>GT-C,whereastheoxidativestabilityofstoredFAMEssamplesmeasuredat110Crevealsanearlyinversetrend.StoragestabilitywastestedfortheFAMEsobtainedfromheveabrasiliensisstoredat30C,afteradditionofsyntheticandnaturalantioxidants—butylatedhydroxytoluene(BHT),2,6-di-tert-butylphenol(DTBP),quercetin(Q),gallicacid(GA),methanolextractsfromgreentea(GTM),pomegranatehull(PH-M),andchloroformextractofgreentea(GT-C).Antioxidantactivitiesabove1500ppmwasintheorderofDTBP>BHT>GA>GT-C>GT-M>Q>PH-M.SyntheticantioxidantshavebeenfoundmoreefficienttoimprovethestoragestabilityofFAMEsobtainedfromheveabrasiliensis.DTBPinparticularhasthehighestprotectionfactor.

简介：Presentstudywasconductedtocharacterisetenrice(OryzasativaL.)cultivarsviz.IET-23466,Dhan-201,IET-23448,MAS-946,IET-23445,IET-23463,IET-23455,PR-123,PR-115andIET-23449basedonantioxidants(totalphenolics,flavonolsandtannins),bioactivecompounds(phyticacid,gammaaminobutyricacid,tocopherolandreducedascorbate)andantioxidantactivity(1,1-diphenyl-2-picrylhydrazylradicalscavengingactivity,hydroxylradicalscavengingactivity,freeradicalantioxidantpowerandtotalreducingpower)withanaimtoidentifycultivarscontaininghigherhealthpromotingcomponentsaftergermination.ThreecultivarsIET-23466,IET-23463andPR-123performedbetterasrevealedbyhigherlevelofantioxidants,bioactivecompoundsandantioxidantactivitybeforeandaftergermination.ThreecultivarsMAS-946,IET-23445andIET-23449hadmoderatelevelofantioxidants,bioactivecompoundsandantioxidantactivity.FourcultivarsDhan-201,IET-23448,IET-23455andPR-115performedintermediately.Strongpositivecorrelationwasobservedamongtotalphenolicsandtheantioxidantactivity.Phyticacidwasfoundtobenegativelycorrelatedtotheantioxidantactivity.OurresultshighlightedthatcultivarsIET-23466,IET-23463andPR-123holdgreatpotentialaftergerminationandwouldopenupausefulopportunityforthefunctionalfoodindustry,andconsumptionofthesecultivarsaftergerminationwouldaffordhealthbenefitstoconsumerssincetheycontainhigherlevelofantioxidants.

简介：在这研究，二商业地可得到的superoxidescavengers，tetrakis(1-methyl-4-pyridyl)卟啉(Mn[III]TMPyP)并且superoxidedismutase(草皮)，以及红手掌油(RPO)，自然蔬菜油，被用来调查他们的在对人的精子活动性上的superoxide(O2)的有毒的效果的vitro效果可能。精液样品从健康志愿者施主在19和23年之间变老的12normozoospermic被获得。O2施主2,3-dimetoxyl-1,4-naphthoquinone(DMNQ)(2.5摩尔L-1鈥?00摩尔L-1)当面被加到normozoospermicpost-swim-up精子或Mn(III)TMPyP(50摩尔L-1)的缺席，草皮(50IU)或RPO(0.1%或0.5%)。帮助计算机的精液分析被用来分析各种各样的活动性参数。兴趣的参数是能动房间，进步活动性，快速的房间和静态的房间的百分比。集中高对精子活动性比25摩尔L-1DMNQ有害。Mn(III)TMPyP能在活动性参数上稀释O2的效果。在vitro，草皮和RPO的增加在精子活动性上显示出有害效果。

简介：Thedevelopmentofefficientbondingagentsisoneaspectoftheadvancementofrefractories.Basedonanewlydevelopedbindersystem,anewgenerationoftar-resinbondedmagnesiacarbonproductswithhighperformancehasbeendeveloped.Furthermore,thebindersystemcharacterizedbyhighcarbonyieldaftercarbonizationresultsinforminganextremelystrongcarbonbonding.Itcanimproverefractoriespropertiestogetnewproductwithmoreadvantagesthanoldrefractories:moreeconomic,lowercostandlowtoxicity.Tar-resinisnotonlyusedinshapedrefractories,butalsoinmorerefractoriestypes,suchasmonolithicrefractories.ImmersionexperimentsofMgO-Cmonolithicrefractoriessamplesinliquidsteelat1600℃havebeencarriedoutforsteelmakingindustry.TheseexperimentsshowedtheformationofadenseandcontinuousMgOrichlayer,ontheinterfacebetweenrefractoryandsteel,andthepossibleformationofinclusionsaslargeclustersprotrudingfromtherefractorysurface.Forthemechanicalproperties,thepowderwasheatedupto1400℃inairtoremovecarbon,andwassubsequentlyformedintobrickshape.StandardASTMwasusedtodeterminetheMOR,porosityanddensity.Itisfoundthatantioxidantmaterialsplayanimportantroleinimprovingthemechanicalproperties.

简介：AbstractA significant number of SARS-CoV-2 (COVID-19) pandemic patients have developed chronic symptoms lasting weeks or months which are very similar to those described for myalgic encephalomyelitis/chronic fatigue syndrome. This study reviews the current literature and understanding of the role that mitochondria, oxidative stress and antioxidants may play in the understanding of the pathophysiology and treatment of chronic fatigue. It describes what is known about the dysfunctional pathways which can develop in mitochondria and their relationship to chronic fatigue. It also reviews what is known about oxidative stress and how this can be related to the pathophysiology of fatigue, as well as examining the potential for specific therapy directed at mitochondria for the treatment of chronic fatigue in the form of antioxidants. This study identifies areas which require urgent, further research in order to fully elucidate the clinical and therapeutic potential of these approaches.