1. Ua ntej tshaj plaws ntawm txhua yam, koj puas nkag siab UV lub teeb yog? Nws ua li cas?
UV yog cov lus sau rau ultraviolet tshav, lossis nthwv dej ntau yam ntawm 100 tsis yog hluav taws xob ntawm x-rays thiab pom lub teeb. Qhov no txhais tau tias lub teeb no yog lub teeb ci zog uas yog nkag mus thiab tsim cov cua sov ntawm lub cev.
Qhov kev puas tsuaj ntawm lub hnub ci rau tib neeg cov tawv nqaij tsuas yog los ntawm ultraviolet A (UVA) thiab ultraviolet b (UVB). UVA belongs rau lub nthwv dej ntev, ua yeeb yam ntawm txheej sib sib zog nqus ntawm daim tawv nqaij, qhov kev txiav txim yog qeeb, tab sis nws tuaj yeem ua rau ib zaug kev sib daj sib deev. UVB belongs rau nruab nrab yoj, ua yeeb yam rau saum npoo ntawm daim tawv nqaij, cov nyhuv ceev. Tuaj yeem txhawb cov tawv nqaij keratinocytes, kom cov ntshav hlab ntsha dilate, nce cov ntshav txaus, qhov pib yuav liab, thiab tom qab ntawd tig xim av. Yog li, hauv nutshell, UVB ua rau "tus muab tshem tawm lub hnub" thiab UVA ua rau "tus tsaus ntuj lub hnub".
Cov nyhuv: feem ntau yog siv rau hauv kev kho cov tawv nqaij dawb, lub ntsiab lus ntawm cov tawv nqaij tyrosine dawb, cov tawv nqaij ua kom zoo nkauj, tawv nqaij dawb rau hauv dub.
Peb tuaj yeem pom ntau UV lub teeb Kev Kho Vaj Dawb cov seev vwm hauv Is Taws Nem, peb tuaj yeem sim tshawb.
2. Dab tsi yog lub luag haujlwm ntawm qee cov tuam ntxhab hauv kev siv UV teeb nyob rau hauv daim tawv PVC analyzer tshuab?
Seb puas los yog tsis UV lub teeb yog ua kom raug tawv nqaij, qee cov lag luam ntawm kev ua lag luam UV ntawm cov khoom siv tawv nqaij thiab cov av (tawv nqaij) 2 yam no yog cov khoom siv tawv nqaij tsawg kawg ntawm cov phiaj xwm tshuaj xyuas, Vim li cas? Cov xim teeb ntawm daim tawv nqaij tuaj yeem nrhiav tau ntawm peb tus kheej Magic Daim Iav Ntsuam Xyuas Tshuab, lawv tseem tuaj yeem nrhiav tau qhov chaw, vim li cas thiaj yuav tsum tau ntsuas kom pom, ua aDaim tawv nqaij analyzer ntaus ntawvPeb xav tias nws yog cov ntsiab lus kom pom cov xim chaw raws li cov lus noj.
Lub sijhawm Post: Sep-18-2020
