2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
kev tshawb fawb txog tshuaj fluoride tau pib thaum xyoo 1901, thaum lub tsev kawm kho hniav hluas kawm tiav npe Frederick McKay tawm sab hnub tuaj ntug dej hiav txwv los qhib kev kho hniav hauv Colorado Springs, Colorado. Thaum nws tuaj txog, McKay xav tsis thoob thaum pom cov qhab nia ntawm Colorado Springs cov neeg nyob nrog cov xim av grotesque ntawm lawv cov hniav.
Leej twg pom fluorosis?
Ib puag ncig ntawm lub xyoo pua 20th, Colorado kws kho hniav Dr. Frederick S. McKay pom ntau tus neeg mob muaj qee yam hu ua hniav fluorosis, uas ua rau staining ntawm cov hniav.
fluorosis tuaj qhov twg?
Dental fluorosis yog tshwm sim los ntawm noj cov tshuaj fluoride ntau dhau lub sijhawm ntev thaum cov hniav tsim hauv qab cov pos hniav. Tsuas yog cov menyuam yaus hnub nyoog qis dua 8 xyoos thiab qis dua yuav muaj kev pheej hmoo vim qhov no yog thaum cov hniav mus tas li; Cov menyuam yaus hnub nyoog qis dua 8 xyoos, cov hluas, thiab cov laus tsis tuaj yeem tsim kho hniav fluorosis.
Dr Frederick McKay yog dab tsi?
Frederick S. McKay. Xyoo 1931, Dr. McKay tau tshawb pom tias qib siab ntawm fluoride hauv cov dej haus ntawm Colorado Springs cheeb tsamua rau cov xim av xim av, nrog rau kev tiv thaiv cov hniav lwj ntawm cov neeg nyob hauv ib txwm muaj., ua rau cov txheej txheem fluoridation.
Leej twg tsim cov tshuaj fluoride hauv cov tshuaj txhuam hniav?
Kws kho hniav thiab biochemist Joseph Muhler thiab inorganic chemist William Nebergall tsim cov khoom tiv thaiv kab noj hniav siv stannousfluoride, tsim kev tshawb fawb pib nyob rau hauv 1940s ntawm Indiana University los ntawm ces-undergraduate Muhler thiab biochemistry professor Harry Day.
Pom zoo:
Leej twg tsim cov qauv tshuaj rau kev kho mob?
Cov phiaj xwm kev noj qab haus huv feem ntau tsim cov npe no los ntawm kev tsim pawg kws tshuaj thiab kws kho mob suav nrog cov kws muag tshuaj thiab kws kho mob los ntawm ntau yam kev kho mob tshwj xeeb. Pawg neeg no tshuaj xyuas thiab xaiv cov tshuaj tshiab thiab tam sim no rau qhov hu ua (kev npaj khomob) cov qauv.
Cov khoom xyaw twg hauv qab no ua cov tshuaj tsw qab hauv cov tshuaj txhuam hniav?
Sodium lauryl sulfate (SLS) yog surfactant feem ntau siv. YPuas yog tshuaj txhuam hniav puas yog surfactant? Surfactants. Ntau, txawm tias tsis yog tag nrho, tshuaj txhuam hniav muaj sodium lauryl sulfate (SLS) lossis lwm yam surfactants (detergents).
Cov piv txwv ntawm cov kuab tshuaj thiab cov kuab tshuaj yog dab tsi?
Solutes yog cov khoom uas yaj rau hauv cov kuab tshuaj thiab peb xaus nrog kev daws. Qee qhov piv txwv ntawm cov kuab tshuaj yog dej, ethanol, toluene, chloroform, acetone, mis nyuj, thiab lwm yam. Piv txwv ntawm cov kuab tshuaj muaj xws li, qab zib, ntsev, oxygen, thiab lwm yam … Cov dej dej muaj dej (kua kua) thiab yaj oxygen (solute).
Cov tshuaj phiv tshuaj twg yog leej twg?
Ib yam tsis zoo yog qhov tsis zoo uas tshwm sim los ntawm kev siv tshuaj lossis lwm yam kev cuam tshuam, xws li kev phais. Cov teebmeem tshwm sim tuaj yeem raug hu ua "kev mob tshwm sim", thaum txiav txim siab ua qhov thib ob rau qhov tseem ceeb lossis kev kho mob.
Cov tshuaj twg yog cov tshuaj uas tsis yog tshuaj tiv thaiv inflammatory analgesic?
Txhua yam koj yuav tsum paub txog NSAIDs. Nonsteroidal anti-inflammatory tshuaj (NSAIDs) yog cov tshuaj uas txo qis lossis txo qhov mob. Cov piv txwv nrov tshaj plaws ntawm cov tshuaj hauv pawg no yog aspirin thiab ibuprofen. NSAIDs tuaj nyob rau hauv lub ntsiab lus dav ntawm non-opioid analgesics.
