Video: Vim li cas thiaj siv lead ua los tiv thaiv?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Kev tiv thaiv txhuas pab tiv thaiv los ntawm hluav taws xob vim tias nws cov qib siab molecular. Siv tau los nres gamma rays thiab x-rays, coj yog siv Raws li kev tiv thaiv hluav taws xob hauv cov ntawv thov xws li x-ray duab thiab PET chav rau nuclear reactors.
Tsis tas li ntawd, puas tiv thaiv cov hlau lead ua hluav taws xob?
Ntshiab coj nws tus kheej ua tsis ua siab heev hluav taws xob nyob rau hauv bombardment los ntawm neutron. Yog li ntawd, hlau thaiv , txawm tias tom qab lub sijhawm ntev ntev ntawm kev tso tawm neutron, tso tawm tsuas yog qhov tsis tseem ceeb ntawm hluav taws xob vim ua kom. Tab sis coj ib leeg tsis haum rau hluav taws xob tiv thaiv hauv chaw nres tsheb fais fab nuclear.
Ib qho ntxiv, yuav tsum ua tuab npaum li cas thiaj thaiv tau hluav taws xob? Cov ntaub thaiv npog yuav tsum muaj li 13.8 feet ntawm dej, txog 6.6 feet ntawm pob zeb, lossis txog 1.3 feet ntawm coj . tuab , ntom thaiv yog tsim nyog rau tiv thaiv tiv thaiv gamma rays. Qhov siab dua lub zog ntawm cov duab gamma, tus tuab ntaub thaiv npog yuav tsum ua. X-rays ua rau muaj kev sib tw zoo sib xws.
Ib qho ntxiv, puas yog cov hlau lead tiv thaiv teeb meem?
Uncoated metallic coj yog dav siv raws li hluav taws xob tiv thaiv hauv kev tshawb fawb thiab kev tsim kho, tshuaj nuclear thiab hluav taws xob, thiab ntau yam kev tsim khoom. Kev siv ntau ntawm hlau thaiv , txawm li cas los xij, tuaj yeem nthuav qhia kev phom sij txaus ntshai rau kev noj qab haus huv vim coj hmoov av.
Puas yog cov ntaub pua plag txhuas xav tau?
Lead Apron . Ua aprons tsis tau pom zoo ntxiv rau kev siv hluav taws xob kho hniav niaj hnub txij li kev siv cov txheej txheem zoo li niaj hnub no, cov cuab yeej siv siab kilovolt, cov duab sib dhos sib dhos thiab cov yeeb yaj kiab nrawm tsim ua kom tawg qis dua ntawm lub cev thiab muaj txiaj ntsig zoo ntawm kev txo qis.
Pom zoo:
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12-lead ECG qhia, raws li lub npe cuam tshuam, 12 coj uas tau muab los ntawm txhais tau tias ntawm 10 electrodes. Peb ntawm cov coj no yooj yim to taub, vim lawv tsuas yog qhov tshwm sim ntawm kev sib piv cov peev xwm hluav taws xob kaw los ntawm ob lub electrodes; ib qho hluav taws xob tab tom tshawb nrhiav, thaum lwm qhov yog siv hluav taws xob siv
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