Pazaka zambiri zapitazi kufunika kwa chitetezo cha Uvaanali akuchulukirachulukira.
Ma radiation a UV ali ndi zovuta, kuphatikizapo kutentha kwa dzuwa, chithunzi-khansa ndi khansa yapakhungu. Izi zitha kulepheretsa kuteteza ma radiation yonse ya UV, kuphatikizapo UVA.
Kumbali inayo palinso njira yochepetsera kuchuluka kwa "mankhwala" pakhungu. Izi zikutanthauza kuti mwagwira bwino kwambiri UV alsoma rberiyenera kupezeka kuti ikhale yofunika kwambiri yoteteza uV.Sunzafe-BMTZ(Bis-Ethylhexyloxyphenol memoxyphenyl apangidwa kuti akwaniritse izi. Ndiwokhazikika panganitsetse, kusungunuka-mafuta, bwino kwambiri ndikuphimba UVB ndi UVA. M'chaka cha 2000, aboma aku Europe adawonjezera Bis-ethylhexyloxyphenol memoxyphenyl ma triazine ku mndandanda wa zokongoletsera zaukonde.
•Uva:Magulu awiri ortho-oh amafunikira kuti ikhale yoyenera mphamvu kudzera intramolecular hydidges. Kuti mupeze mayamwidwe amphamvu ku UVA, malo a ma para a Phenyl ayenera kulowetsedwa ndi o-alkyl, zomwe zimapangitsa biiscinyl ma chrophine tebulopor.
•UVB:Gulu lotsala la PHONYL lomwe lili ndi triazine limatsogolera ku uveb kuyamwidwe. Itha kuwonetsedwa kuti magwiridwe antchito a maximal "amapezeka ndi O-Alkyl omwe ali paradi. Popanda kulowetsa m'malo oyang'anira, ma hpti amakhala okhazikika pafupifupi mafuta odzikongoletsa. Amawonetsa zojambulajambula za utoto (mwachitsanzo, mfundo zapamwamba). Kuti muwonjezere kusungunuka m'magawo a mafuta, kapangidwe ka f freese wa uV yasinthidwa moyenerera.
Ubwino:
Chitetezo cha dzuwa
Chofananira kwambiri ndi zosefera zina za UV
Formula bata
Post Nthawi: Feb-18-2022