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《What is nuclear radiation》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、Whatisnuclearradiation?Nowlet'sexaminewhatnuclearradiationis,andwhatwecandotoprotectourselvesfromit.RadiationcandamagecellsandtheirDNAthroughitsionizingeffect.Thiseffecthappenswhenahigh-energycarryingparticleorphotonremovesanelectronwithinanatom'snucleusfromitsorbit,therebyc
2、hangingthepropertiesoftheatom.Ifthereisenoughionization,DNA,cell,andtissuedamagewilloccur.Damagetoone'shealthlargelydependsonthetimeanddensityofexposuretoradiation.Somesimplemeasurescanhelptopreventoneselffrombeingaffectedbyradiation.Becarefultoprotectfacialfeaturesandthebod
3、y,bywearingmasksandgloves.Donoteatordrinkcontaminatedfoodorwater.Whenexposedtoradiationoutdoors,takeashowerimmediately.Andfinally,someexpertssaytakingiodicpillscanhelp,butitmustbedoneundertheguidanceofadoctor.CountriesseeingminimalradiationeffectsManycountrieshaveenhancedmon
4、itoringforpossiblenuclearfallout,afterseveralexplosionsatJapan'sFukushimanuclearpowerplant.Sofar,therehasbeennoevidenceofanynegativeeffectfromtheblastsinothernations.SouthKoreasaysradioactivesubstanceswillnotreachthenation.70monitoringsitesacrossthecountryhavereportednormalr
5、adiationlevels.Meanwhile,Russiasaysradiationlevelsarewithinlegallimitsatits32monitoringsitesonthefareastcoast.FaracrossthePacificOcean,thestateofCaliforniaintheUSsaysthereislittlepossibilitythatthewesterncoastoftheUSwillbeaffectedbytheblasts.Evenintheworstcasescenario,withme
6、ltingrods,nuclearpollutioninJapanwouldnotposeanythreattotheUS.Teleinterview:Willradiationleaksbecomeworse?Formoreonthisissue,we'renowjoinedonphonebyMr.TengJianqun,DirectoroftheCenterforArmsControl,attheChinaInstituteofInternationalStudies.Thanksforjoiningus,Mr.Teng...Q1:Base
7、donthecurrentsituation,willtheradiationleaksattheFukushimaNuclearPlantbecomeworse?Q2:ManypeopleinChinaarequiteanxiousaboutthesituation,andofficialsaresendingoutmessagestoreassurethem.Pleasetelluswhythecountryisunlikelytobeaffected?Q3:Butintheend,weallsharethesamewater.Sowhat
8、arethechancesofseaproductsbecomingcontaminated?Chinashowingnosignofradiatio
