2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ib qho ntawm cov kev txhais lus no yog "nylon" tuaj ntawm "New York" thiab "London", vim tias ob tus kws tshuaj ntsuam xyuas tau xav txog lo lus ntawm kev ya davhlau intercontinental los ntawm ib qho. lub zos mus rau lwm qhov.
Nylon invented nyob qhov twg?
thawj piv txwv ntawm nylon (nylon 6, 6) tau tsim tawm thaum Lub Ob Hlis 28, 1935, ntawm DuPont qhov chaw tshawb fawb ntawm DuPont Chaw Tshawb Fawb. Nws muaj tag nrho cov khoom uas xav tau ntawm elasticity thiab lub zog.
Leej twg nrhiav tau nylon?
Kev tsim kho ntawm niaj hnub polymer kev tshawb fawb los ntawm Wallace Carothers thiab thawj cov nroj tsuag nylon, tsim los ntawm DuPont, ntawm Seaford, yog ob qhov sib cuam tshuam rau National Historic Chemical Landmarks.
Nylon tau tsim thaum twg?
Nws yog raws nraim li Du Pont tau cia siab rau, thiab nylon tau patented hauv 1935. Nws ntaus cov lag luam hauv xyoo 1939 thiab yog qhov ntaus tam sim ntawd, tshwj xeeb tshaj yog hloov cov txhob lo lo ntxhuav hauv hosiery. Qhov tseeb, ua ntej ntev "nylons" thiab "stockings" yog synonymous nyob rau hauv niaj hnub hais lus.
Nylon yog tsim los rau dab tsi?
Nylon, txhua yam khoom siv yas hluavtaws muaj li ntawm polyamides ntawm qhov hnyav molecular thiab feem ntau, tab sis tsis tas li, tsim los ua fibre. Nylons tau tsim nyob rau xyoo 1930 los ntawm pab pawg tshawb fawb los ntawm Asmeskas kws tshuaj, Wallace H. Carothers, ua haujlwm rau EI. du Pont de Nemours & Company.
Pom zoo:
Nyob rau hauv angiosperms pollen yog tsim nyob rau hauv anthers ib feem ntawm?
Nyob rau hauv angiosperms, paj ntoos yog tsim los ntawm anthers ntawm the stamens hauv paj. Hauv gymnosperms, nws yog tsim nyob rau hauv microsporophylls ntawm microstrobili (txiv neej paj ntoos cones). Pollen muaj ib los yog ntau tshaj cov noob qoob loo thiab ib lub qe qe.
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.
Puas yog bagels tsim nyob rau hauv New york?
New York style bagel yog thawj cov qauv ntawm bagel muaj nyob hauv Tebchaws Meskas, pib los ntawm cov neeg Yudais hauv New York City, thiab tuaj yeem taug qab nws keeb kwm mus rau bagels ua los ntawm Ashkenazi cov neeg Yudais ntawm Poland. Lub bagel tau tsim nyob qhov twg?
Leej twg detering nyob rau hauv tag nrho cov nyob ntsiag to nyob rau sab hnub poob pem hauv ntej?
Detering yog tus neeg ua liaj ua teb los ntawm Txhua Tus Neeg Tsis Txaus Siabntawm Sab Hnub Poob los ntawm Erich Maria Remarque. Nws muaj siab mos siab muag, tshwj xeeb tshaj yog thaum nws los txog rau nees. Nws muaj kev kub ntxhov loj heev thaum nws hnov cov nees quaj thiab txawm sim tua lawv kom kawg lawv txoj kev txom nyem.
Puas yog pieta puas tau nyob hauv New york?
Michelangelo tus masterwork hauv marble, "Pietà," tuaj txog hauv New York nag hmo, thawj zaug nws tau tawm ntawm Vatican txij li tus kws kos duab nyiag nws mus rau hauv St. Peter's hauv lub laub nees 465 xyoo dhau los. Pieta nyob rau NYC thaum twg?
