2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
On March 24, 1882, Dr. Robert Koch tshaj tawm qhov kev tshawb pom ntawm Mycobacterium tuberculosis, cov kab mob ua rau tuberculosis (TB). Lub sijhawm no, TB tua ib ntawm txhua xya tus neeg nyob hauv Tebchaws Meskas thiab Europe.
tuberculosis pib li cas?
tuberculosis originated nyob rau East Africa txog 3 lab xyoo dhau los. Cov pov thawj loj hlob tuaj qhia tau hais tias tam sim no hom kab mob M. tuberculosis yog los ntawm ib tug poj koob yawm txwv nyob ib ncig ntawm 20,000 - 15,000 xyoo dhau los.
Robert Koch nrhiav tau tuberculosis li cas?
Txawm tias nws tau xav tias mob ntsws yog tshwm sim los ntawm tus kab mob sib kis, cov kab mob tseem tsis tau raug cais tawm thiab txheeb xyuas. Los ntawm kev hloov kho txoj kev staining, Koch nrhiav pom tubercle bacillusthiab tsim nws muaj nyob rau hauv cov ntaub so ntswg ntawm cov tsiaj thiab tib neeg raug tus kab mob.
Leej twg tsim kho tus mob TB?
Nyob rau xyoo 1943 Selman Waksman nrhiav tau ib qho chaw uas tawm tsam M. tuberculosis, hu ua streptomycin. Cov tshuaj tau muab thawj zaug rau tib neeg tus neeg mob thaum lub Kaum Ib Hlis 1949 thiab tus neeg mob tau kho.
TB kis tau li cas xyoo 1800?
Xyoo 1869, Jean Antoine Villemin tau qhia tias tus kabmob kis tau tiag tiag, ua qhov kev sim uas tuberculous teeb meem los ntawm tib neeg cadavers tau txhaj rau hauv chav kuaj luav, uas tom qab ntawd kis tau. Lub Peb Hlis 24, 1882,Robert Koch qhia tias tus kab mob no tshwm sim los ntawm tus kab mob.
Pom zoo:
Tus thawj coj twg thawj zaug tsim peev ntawm delhi?
Teb tiav: Lub peev ntawm Delhi yog thawj zaug tsim los ntawm huab tais, Anangapala los ntawm Tomara Dynasty. Tomara Dynasty yog ib qho ntawm cov dynasties thaum ntxov medieval ntawm sab qaum teb Is Nrias teb. Leej twg yog thawj Delhi sultan?
Leej twg thawj zaug pom nqaij npuas kib?
Raws li cov txheej txheem tiag tiag ntawm kev ntxiv ntsev rau nqaij npuas, uas yog qhov yooj yim tshaj plaws ntawm nqaij npuas kib, Suav thaum ubyog thawj tus tsim nqaij npuas kib, thiab muaj cov ntaub ntawv sau tseg ntawm no hom nqaij npuas kib thaum ntxov li 1500 BC.
Qhov twg yog streptomycin thawj zaug kuaj hauv tus neeg mob tuberculosis?
Thaum kawg, streptomycin tau tshawb pom hauv xyoo 1944 los ntawm kev ua haujlwm ntawm Albert Schatz hauv Selman Waksman lub chaw sim(7). Streptomycin tsis tshua muaj txiaj ntsig zoo dua li streptothricin hauv kev kho cov kab mob fungal tab sis muaj cov tshuaj lom neeg tsawg dua hauv cov qauv tsiaj thiab yog 50 npaug ntau dua los tua M.
Leej twg thawj zaug pom electron?
Joseph John Thomson (J. J. Thomson, 1856-1940; saib daim duab ntawm American Institute of Physics) tau lees paub dav dav tias yog tus neeg nrhiav pom hluav taws xob. Leej twg hu ua electron? (Lub sij hawm "electron" yog coined nyob rau hauv 1891 los ntawm G.
Leej twg thawj zaug pom gadolinium?
Gadolinium yog cov khoom siv tshuaj nrog lub cim Gd thiab tus lej atomic 64. Gadolinium yog cov hlau dawb-dawb thaum oxidation raug tshem tawm. Nws tsuas yog me ntsis malleable thiab yog ib qho khoom siv tsis tshua muaj hauv ntiaj teb. Gadolinium reacts nrog atmospheric oxygen los yog noo noo maj mam tsim ib txheej dub.
