Txog Lub Teeb UV

1. Ua ntej tshaj plaws, koj puas nkag siab tias lub teeb UV yog dab tsi? Nws ua haujlwm li cas?

UV yog ib lo lus luv rau Ultraviolet Rays, lossis lub teeb ultraviolet, nrog rau qhov ntev ntawm 100 txog 400 nm, uas yog cov nthwv dej electromagnetic ntawm X-rays thiab lub teeb pom kev. Qhov no txhais tau tias lub teeb no yog lub zog teeb uas nkag mus thiab tsim cua sov rau lub cev.

Qhov kev puas tsuaj ntawm lub hnub rau tib neeg daim tawv nqaij feem ntau yog los ntawm ultraviolet A (UVA) thiab ultraviolet B (UVB). UVA yog nthwv dej ntev, ua rau txheej tawv nqaij tob, qhov kev ua qeeb, tab sis nws tuaj yeem ua rau dub ib zaug. UVB yog nthwv dej nruab nrab, ua rau ntawm qhov chaw ntawm daim tawv nqaij, ua haujlwm sai. Nws tuaj yeem ua rau cov keratinocytes ntawm daim tawv nqaij, ua rau cov hlab ntsha nthuav dav, ua rau cov ntshav ntws ntau dua, thawj zaug yuav liab, thiab tom qab ntawd maj mam hloov xim av. Yog li, hauv nutshell, UVB ua rau "lub hnub liab dua" thiab UVA ua rau "lub hnub tsaus dua".

Cov Nyhuv: Feem ntau nws siv rau hauv tshuaj rau kev kho mob dawb vwm, txhais tau tias los ntawm qhov kev raug lub teeb ultraviolet no, kev ua haujlwm ncaj qha ntawm qhov chaw dawb hauv qab daim tawv nqaij tyrosine enzyme txhawb nqa melanin ntau lawm, daim tawv nqaij dawb mus rau hauv dub.

Peb tuaj yeem nrhiav tau ntau yam khoom siv kho mob UV dawb vwm hauv Is Taws Nem, peb tuaj yeem sim tshawb nrhiav.

2. Lub luag haujlwm ntawm qee cov chaw tsim khoom siv lub teeb UV hauv yog dab tsi? tshuab tshuaj xyuas tawv nqaij?

Txawm hais tias lub teeb UV puas ua rau daim tawv nqaij puas tsuaj los tsis yog, qee lub lag luam hauv khw siv lub teeb UV rau ntawm daim tawv nqaij. Cov khoom siv feem ntau yog siv los saib cov xim thiab cov qhov hws (qhov chaw ntawm daim tawv nqaij). 2 yam khoom no yog cov ntsiab lus tsawg tshaj plaws ntawm qhov project nrhiav, vim li cas? Cov xim ntawm daim tawv nqaij tuaj yeem pom los ntawm peb tus kheej. Tshuab Tshawb Xyuas Tawv Nqaij Daim Iav Khawv Koob, lawv kuj tuaj yeem nrhiav tau qhov chaw, vim li cas yuav tsum xav tau cov cuab yeej los ntes, ua ib qhoCov Khoom Siv Tshuaj Ntsuam Xyuas Tawv Nqaijpeb xav tias nws muaj lub ntsiab lus ntau dua los pom qhov xim nyob hauv qab daim tawv nqaij.