Video: Dab tsi tiv thaiv peb ntawm UV teeb?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov txheej txheej ozone ua lub lim dej rau lub nthwv dej luv luv thiab muaj kev phom sij heev ultraviolet hluav taws xob (UVR) los ntawm lub hnub, tiv thaiv lub neej hauv ntiaj teb los ntawm nws qhov muaj peev xwm ua rau muaj kev phom sij. Thaum lub ntuj pom tseeb, muaj kev cuam tshuam sib txawv ntawm stratospheric ozone thiab hnub ci UVR ntsuas ntawm lub ntiaj teb saum npoo av.
Ib yam nkaus, dab tsi tiv thaiv peb los ntawm UV hluav taws xob?
Cov txheej ozone tiv thaiv peb los ntawm qhov muaj feem phom sij ultraviolet ( UV ) hluav taws xob . CAMS saib xyuas stratospheric ozone thiab muab UV kev kwv yees raws cov ntaub ntawv no. Ozone hauv stratosphere tiv thaiv lub neej hauv ntiaj teb los ntawm kev phom sij ultraviolet ( UV ) hluav taws xob thiab yog li ntawd feem ntau hu ua 'zoo' ozone.
Ib yam li ntawd, Ozone tiv thaiv peb li cas los ntawm UV? Ozone nqus tau UV -B hluav taws xob los ntawm lub hnub Thaum ib ozone molecule absorbs UV -B, nws sib nrug los ua cov pa oxygen molecule (O2) thiab cais cov pa oxygen (O). Los ntawm kev nqus UV -B hauv stratosphere, tus ozone txheej tiv thaiv nws qib tsis zoo los txog rau lub ntiaj teb saum npoo av.
Qhov thib ob, dab tsi tiv thaiv peb los ntawm ntau lub ultraviolet rays ntawm lub hnub?
Cov tshuaj pleev thaiv hnub tshav dav dav muab rau kev tiv thaiv los ntawm hnub ci Ultraviolet ( UV ) hluav taws xob . Cov huab cua ua tsawg los tiv thaiv cov no duab tshav -feem ntau UVA hluav taws xob mus txog Lub ntiaj teb nto. UVA duab tshav ua rau daim tawv nqaij laus thiab ua rau lub qhov muag puas, thiab tuaj yeem txo koj lub cev lub peev xwm los tawm tsam kev mob.
Cov xim twg thaiv UV ntau tshaj?
Lawv pom tias liab thiab xiav ntxoov ua tau zoo dua li daj, tshwj xeeb yog thaiv UV-B duab tshav, uas yog qhov txaus ntshai tshaj plaws. Kev tiv thaiv tau nce ntxiv vim qhov ntxoov ntxoo tau ua kom tsaus ntuj thiab muaj zog dua. Thiab yog tias qib kev tiv thaiv thawj zaug ntawm cov ntaub tau siab dua, cov xim tsaus ua rau muaj kev txhim kho ntau dua.
Pom zoo:
Dab tsi yog txhais los ntawm kev tiv thaiv kab mob tiv thaiv kab mob?
Kev tshuaj tiv thaiv kab mob tiv thaiv kab mob tau siv los txiav txim siab tias cov tshuaj tua kab mob tshwj xeeb tshwj xeeb cov kab mob tshwj xeeb lossis kab mob hu ua fungus. Feem ntau, qhov kev sim no ua tiav Gram Stain thiab kab lis kev cai, cov txiaj ntsig uas tau txais sai dua
Dab tsi yog kev tiv thaiv kab mob tiv thaiv kab mob hauv microbiology?
Kev tiv thaiv kev tiv thaiv yog ob txoj hauv kev cuam tshuam nrog kev tiv thaiv tsis zoo (cov tshuaj tiv thaiv tsim los ntawm B cells) thiab kev tiv thaiv ntawm tes (T cells qhia tawm tsam cov kab mob hauv hlwb). Antigens, tseem hu ua immunogens, yog cov lwg me me uas qhib kev tiv thaiv kev tiv thaiv
Kev tiv thaiv kab mob thiab kev tiv thaiv kab mob yog dab tsi?
Lub cev tiv thaiv kab mob yog lub network nyuaj ntawm cov cell thiab cov protein uas tiv thaiv lub cev tiv thaiv kab mob. Lub cev tiv thaiv kab mob khaws cov ntaub ntawv ntawm txhua tus kab mob (microbe) nws tau swb lawm yog li nws tuaj yeem lees paub thiab rhuav tshem cov kab mob sai sai yog tias nws nkag mus rau hauv lub cev dua
Peb lub cev tiv thaiv kab mob tiv thaiv kab mob li cas?
Tib neeg lub cev siv tshuaj tiv thaiv kab mob los tiv thaiv kab mob. Cov tshuaj tiv thaiv kab mob txuas rau cov kab mob, kos rau lawv tias yog cov neeg ntxeem tau kom cov qe ntshav dawb tuaj yeem nkag thiab rhuav tshem lawv. Txog thaum tsis ntev los no, cov tshuaj tiv thaiv tau xav tias tiv thaiv sab nraud ntawm cov hlwb. TRIM21 khi rau cov kab mob nyob rau hauv lub hlwb
Kev tiv thaiv dab tsi tshwm sim los ntawm kev txhaj tshuaj tiv thaiv?
Artificially tau txais kev tiv thaiv kab mob tuaj yeem tsim los ntawm tshuaj tiv thaiv, ib yam khoom uas muaj antigen. Ib qho tshuaj tiv thaiv ua rau cov lus teb thawj zaug tawm tsam antigen yam tsis ua rau cov tsos mob ntawm tus kab mob