2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Emil Fischer nrhiav pom trichlorethylene thaum ua haujlwm ntawm kev npaj tetrachlorethane hauv 1864. Nws tau dhau los ua lub npe hu ua cov khoom siv tau zoo rau degreasing hlau qhov chaw, thiab ua cov kuab tshuaj organic, tab sis thaum nws tau siv rau cov laj thawj tshuaj lom neeg sai sai pib tshaj tawm.
Thaum twg yog trichlorethylene tsim?
Trichloroethylene tau npaj thawj zaug hauv 1864 los ntawm Emil Fischer hauv kev sim ntawm kev txo qis hexachloroethane nrog hydrogen (Hardie, 1964). Kev lag luam tsim khoom ntawm trichlorethylene pib hauv lub teb chaws Yelemees xyoo 1920 thiab hauv Asmeskas xyoo 1925 (Mertens, 1993).
Leej twg nrhiav tau trichloroethylene?
Emil Fischer tau tsim cov tshuaj trichlorethylene hauv xyoo 1860, tab sis cov tuam txhab tsis tau tsim nws kev lag luam mus txog thaum ntxov 1900s.
Thaum twg TCE tau txwv?
Fetal toxicity thiab kev txhawj xeeb rau carcinogenic peev xwm ntawm TCE coj mus rau nws tso tseg nyob rau hauv cov teb chaws tsim los ntawm 1980s. Kev siv trichlorethylene hauv cov khoom noj thiab tshuaj lag luam tau raug txwv nyob hauv ntau lub ntiaj teb txij li xyoo 1970svim muaj kev txhawj xeeb txog nws cov tshuaj lom.
Puas yog trichlorethylene txwv hauv Asmeskas?
Nyob rau hauv Kaum Ob Hlis 2016, siv nws txoj cai raws li Txoj Cai Tswj Kev Tiv Thaiv Kab Mob Tshiab (TSCA), EPA tau thov kom txwv tsis pub siv trichlorethylene (TCE) hauv aerosol degreasing thiab chaw tu hauv cov chaw tu qhuav, tom qabnrhiav kev txaus ntshai heev rau cov neeg ua haujlwm, cov neeg siv khoom, thiab cov neeg sawv cev.
Pom zoo:
Thaum twg dystrophic epidermolysis bullosa nrhiav tau?
Epidermolysis bullosa tau pom thawj zaug hauv lig 1800s. Nws yog ib tug tswv cuab ntawm tsev neeg ntawm cov kab mob hu ua blistering disease. Puas yog dystrophic epidermolysis bullosa ib yam kab mob tsawg? Epidermolysis bullosa acquisita (ib daim ntawv tau txais ntawm EB) yog ib yam tsis tshua muaj autoimmune tsis meej thiab tsis tau txais txiaj ntsig.
Thaum twg nrhiav tau dysarthria?
Early in 1969 , Darley et al. txhais tau tias dysarthria yog ib lo lus sib sau ua ke rau kev hais lus tsis zoo. Kev faib tawm ntawm dysarthria suav nrog flaccid dysarthria, spastic dysarthria, ataxic dysarthria, hypokinetic dysarthria, hyperkinetic hyperkinetic Hyperkinesia yog ib lub xeev ntawm kev ntxhov siab ntau dhauuas muaj ntau yam kab mob uas cuam tshuam rau lub peev xwm.
Thaum twg tarrytown nrhiav tau?
Ib lub zos nrog tob Dutch cov hauv paus hniav, Tarrytown tau teeb tsa los ntawm Europeans hauv 1640, thiab koom ua ke hauv 1870. Thaum pw tsaug zog Hollow nrhiav tau? Keeb Kwm Ib zaug ib feem ntawm cov cuab yeej cuab tam ntawm tus tub lag luam Frederick Philipse, nws tau koom ua North Tarrytown hauv 1874, plaub xyoos tom qab kev koom ua ke ntawm Tarrytown.
Thaum twg tau txais kev pom zoo nrhiav tau?
In 2009, peb tus tsim thiab CEO Steve Marshall tau txheeb xyuas lub sijhawm hauv kev lag luam pov hwm lub neej thiab Reassured tau tsim. Peb pab tsev neeg tiv thaiv qhov tseem ceeb tshaj plaws rau lawv; Peb Lub Hom Phiaj rau 2020 yog los tiv thaiv ntau dua 200,000 tsev neeg hauv tebchaws Askiv.
Puas nrhiav tau lossis nrhiav tau?
Yog li, koj yuav tsum tau siv "could find". Lub modal verb, tau yog twb nyob rau hauv nws paste-form: ua. Yog li koj tsis tas yuav hloov pauv los nrhiav. Yuav nrhiav tau lossis nrhiav tau? "Ntaus" yog sib npaug. "
