Video: Vim li cas cov smog khaus heev hauv Los Angeles?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yav qab teb California txoj kev siv roj av ntev tau cuam tshuam rau nws cov pej xeem tau ntau xyoo. Xyoo 1943 yog qhov hloov pauv rau smog hauv Los Angeles . Cov txheej tuab yog mob siab heev uas ntau tus ntseeg tias lub nroog nyob hauv nruab nrab ntawm kev tawm tsam tshuaj lom neeg los ntawm cov neeg Nyij Pooj.
Yog li ntawd, smog phem npaum li cas hauv Los Angeles?
Hauv xyoo 2017, peb muaj 145 hnub ntawm huab cua tsis zoo, piv rau ntau tshaj 200 xyoo 1980s. Thiab ncov smog qib qis dua, ib yam nkaus: yog li thaum nws smoggy, nws tsis zoo li smoggy li nws tau ua. Tab sis Los Angeles tseem muaj qhov phem tshaj smog hauv lub tebchaws, raws li American Lung Association's 2018 State of the Air report.
Ib yam li ntawd, tseem muaj smog hauv LA? Thaum photochemical smog yog lub ntsiab smog tsim mechanism thaum lub caij ntuj sov lub hlis, lub caij ntuj no smog ntu yog tseem feem ntau. Photochemical smog , raws li pom piv txwv hauv Los Angeles , yog hom huab cua paug muab tau los ntawm tsheb emission los ntawm internal combustion engines thiab industrial fumes.
Tsis tas li ntawd, dab tsi ua rau smog hauv Los Angeles?
Hauv Los Angeles , smog yog ua rau los ntawm cov txheej txheem tshuaj tiv thaiv uas xav tau lub hnub ci. Thaum lub hnub ua lub luag haujlwm hauv tshuaj lom neeg, cov tshuaj tiv thaiv hu ua photochemical reactions. Smog tsim nyob rau hauv txoj kev no yog hu ua photochemical smog . hydrogen thiab carbon atoms.
Los Angeles puas muaj huab cua zoo dua?
Txhim kho cua zoo hauv Los Angeles cheeb tsam tau txuas nrog kwv yees li 20 feem pua tsawg dua cov mob hawb pob tshiab hauv cov menyuam yaus, raws li USC txoj kev tshawb fawb uas tau taug qab cov menyuam yaus yav qab teb California tshaj li 20 xyoo. Cov kev tshawb pom tshwm sim nyob rau hauv lub Tsib Hlis 21 qhov teeb meem ntawm Phau Tsom Faj ntawm American Medical Association.
Pom zoo:
Vim li cas cov pa roj carbon monoxide tseem ceeb heev hauv cov tshuaj chemical?
Cov khoom ntawm carbon ua rau nws lub caj qaum ntawm cov organic molecules uas tsim muaj sia nyob. Cov pa roj carbon monoxide yog ib qho khoom siv ntau yam vim tias nws tuaj yeem tsim plaub cov ntawv cog lus. Organic molecules tseem ceeb rau lub neej muaj xws li cov monomers me me nrog rau cov polymers loj
Vim li cas thiaj tseem ceeb heev rau cov neeg nyob hauv thaj chaw los kawm txog cov pejxeem ntawm ib lub tebchaws?
Vim cov pej xeem muaj kev cuam tshuam loj heev rau peb lub neej, nws yog ib feem tseem ceeb ntawm thaj chaw.Geographers uas kawm tib neeg cov pej xeem tshwj xeeb tshaj yog nyiam cov qauv uas tshwm sim dhau sijhawm. Lawv kawm cov ntaub ntawv xws li muaj pes tsawg tus neeg nyob hauv ib cheeb tsam, yog vim li cas tib neeg nyob qhov twg lawv ua, thiab cov pej xeem hloov pauv li cas
Yuav ua li cas yog vim li cas tus qauv ntawm ib qho enzyme tseem ceeb heev rau nws txoj haujlwm hauv cov khoom muaj sia?
Enzymes ua kom cov tshuaj tiv thaiv uas tshwm sim hauv cov hlwb. Qhov kev ua haujlwm no cuam tshuam ncaj qha rau lawv cov qauv, nrog rau txhua qhov enzyme tau tshwj xeeb zoo li tus ua kom muaj zog rau ib qho tshuaj tiv thaiv. Kev poob ntawm cov qauv ua rau poob haujlwm. - Kub, pH, thiab kev tswj cov molecules tuaj yeem cuam tshuam rau kev ua haujlwm ntawm cov enzymes
Vim li cas nws tseem ceeb heev uas yuav tsum xav txog ntau yam thaum txiav txim siab cov hauv paus hniav ntawm cov kab zauv polynomial?
Piv txwv li, tus naj npawb ntawm lub sij hawm ib tug muab polynomial sib npaug muaj ib lub hauv paus ntawm ib tug muab point yog lub multiplicity ntawm lub hauv paus. Qhov kev xav ntawm ntau qhov tseem ceeb yog qhov tseem ceeb kom suav tau kom raug yam tsis muaj kev qhia tshwj xeeb (piv txwv li, ob lub hauv paus suav ob zaug). Li no cov lus qhia, ' suav nrog ntau ntau'
Cov txheej txheem ntawm lub ntiaj teb huab cua muaj qhov cua nyias heev tab sis kuj tuaj yeem kub heev?
Thermosphere - Lub thermosphere tom ntej no thiab huab cua nyias nyias ntawm no. Cov cua kub tuaj yeem kub heev hauv cov thermosphere. Mesosphere - Lub mesosphere npog tom ntej no 50 mais dhau ntawm stratosphere. Qhov no yog qhov uas feem ntau meteors hlawv thaum nkag