2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Fluorocarbon dej-repellents biodegrade rau ntau yam ntawm PFC acids suav nrog fluorotelomer acids. … PFC acids tau pom tias muaj nyob rau hauv tib neeg cov ntaub so ntswg. PFC acids muaj tau txuas rau kev puas tsuaj rau lub cev tiv thaiv kab mob ntawm cov menyuam yaus.
Puas fluorocarbons nyab xeeb?
Feem ntau ntawm kev lag luam fluorocarbons tsis muaj tshuaj lom (ntau siv los ua cov tub yees), tab sis muaj cov tshuaj lom neeg lom zem heev, txawm tias nyob rau theem qis, tuaj yeem hloov kho lawv cov tshuaj lom.. Feem ntau, cov tshuaj niam txiv yog tsim los rau qib siab purity (ntau dua lossis sib npaug li 99%).
Nikwax puas phem rau ib puag ncig?
Kev paub txog qhov kev hem thawj thiab kev pheej hmoo uas PFCs tsim, Nikwax siv cov dej-repellent elastomer raws li EVA (cov khoom pom nyob rau hauv ib leeg ntawm cov khau hloov tau) uas yog ua tiav ib puag ncig nyab xeeb, thiab nws yeej muaj qhov zoo sib txawv ntawm PFC-raws li kev kho mob: Nikwax ua kom lub kua muag tsis kam ntawm cov khoom uas …
Puas perfluorocarbons phem rau koj?
Perfluorocarbons tsis muaj tshuaj lom, thiab tsis muaj qhov cuam tshuam ncaj qha rau kev raug mob rau lawv.
Vim li cas fluorocarbons tshuaj tsis muaj zog?
Perfluoroalkanes yog ruaj khov vim yog lub zog ntawm carbon-fluorine daim ntawv cog lus, yog ib qho muaj zog tshaj plaws hauv cov organic chemistry. … Yog li ntawd, fluorocarbons saturated muaj tshuaj lom neeg thiab thermally ruaj khov dua lawvsib raug hydrocarbon counterparts, thiab muaj tseeb lwm yam organic compound.
Pom zoo:
Qhov twg micronutrient deficiencies muaj kev txhawj xeeb tshwj xeeb thoob ntiaj teb?
Micronutrient deficiency - qhov tshwj xeeb tshaj yog vitamin A, zinc, iodine, thiab hlau tsis txaus- yog teeb meem kev noj qab haus huv loj thoob ntiaj teb, nrog cov teb chaws tau nyiaj tsawg hauv Africa thiab Asia nqa cov mob hnyav tshaj plaws.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Kuv puas yuav txhawj xeeb txog kev raug xa mus rau kev noj qab haus huv?
No. Kev Noj Qab Haus Huv Kev Ua Haujlwm yog hais txog ua kom tib neeg noj qab nyob zoo ntawm kev ua haujlwm, thiab txhawb nqa cov neeg ua haujlwm yog tias lawv muaj mob uas tuaj yeem cuam tshuam rau lawv cov haujlwm hauv chaw ua haujlwm; Cov kev mob nkeeg no yuav cuam tshuam rau lawv lossis cov haujlwm uas lawv ua.
Vim li cas tus pincer tuav tau muaj kev txhawj xeeb rau cov neeg zov me nyuam?
Tus pincer tuav sawv cev kev txhim kho ntxiv ntawm kev txawj tsav tsheb zoo. Cov no yog cov kev txav uas xav tau kev tswj xyuas cov leeg me me hauv tes. Lawv xav tau ntau yam txuj ci, suav nrog lub zog thiab kev sib koom tes ntawm tes. Vim li cas tus pincer tuav tseem ceeb?
Puas yog khaus khaus ua rau muaj kev txhawj xeeb?
Feem ntau hais lus, khaus ib leeg tsis txaus ntshai, thiab feem ntau lawv tuaj yeem kho nrog cov tshuaj tiv thaiv tom khw muag khoom xws li Benadryl. Txawm li cas los xij, yog khaus khaus tshwm sim los ntawm kev ua xua rau lub cev, nrhiav kev kho mob tam sim.
