Cov txheej txheem:
- Thaum twg muaj tus mob polio ntau tshaj?
- Thaum twg tau kuaj pom tus mob polio zaum kawg?
- Cov tsos mob tseem ceeb ntawm tus mob polio yog dab tsi?
- tus kab mob polio pib qhov twg los?
Video: Thaum twg polio tseem ceeb?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
In the 1940s thiab ntxov 1950s, sab hnub poob Europe thiab North America tau nyob los ntawm lub caij ntuj sov kev ntshai uas tshwm sim los ntawm ze li ntawm txhua xyoo kev kis mob polio. Thaum nws qhov tshwm sim siab tshaj plaws hauv Tebchaws Meskas, xyoo 1952, kwv yees li 21,000 tus neeg mob tuag tes tuag taw polio (tus nqi ntawm 13.6 tus neeg mob rau 100,000 tus neeg) tau sau tseg.
Thaum twg muaj tus mob polio ntau tshaj?
Txij xyoo 1916 mus, muaj tus kabmob polio tshwm sim txhua lub caij ntuj sov hauv tsawg kawg ib feem ntawm lub tebchaws, nrog qhov tshwm sim loj tshaj plaws hauv xyoo 1940 thiab 1950 Nyob rau hauv kev sib kis ntawm xyoo 1949, 42, 173 tus neeg mob tau tshaj tawm hauv Tebchaws Meskas thiab 2, 720 tus neeg tuag los ntawm tus kabmob tau tshwm sim. Canada thiab United Kingdom kuj raug cuam tshuam.
Thaum twg tau kuaj pom tus mob polio zaum kawg?
Hauv Teb Chaws Asmeskas, qhov kawg ntawm tus mob polio tshwm sim nyob rau hauv 1979. Niaj hnub no, txawm hais tias muaj kev mob siab rau thoob ntiaj teb los rhuav tshem tus mob polio, tus kab mob polio tseem cuam tshuam rau cov menyuam yaus thiab cov neeg laus hauv thaj chaw Asia thiab Africa.
Cov tsos mob tseem ceeb ntawm tus mob polio yog dab tsi?
Paralysis yog cov tsos mob hnyav tshaj plaws cuam tshuam nrog tus mob polio, vim tias nws tuaj yeem ua rau muaj kev tsis taus thiab tuag mus tas li. Ntawm 2 txog 10 ntawm 100 tus neeg uas tuag tes tuag taw los ntawm tus kab mob poliovirus tuag, vim tus kab mob cuam tshuam rau cov leeg uas pab ua pa.
tus kab mob polio pib qhov twg los?
Lub hauv paus ntawm kev rov kis kab mob yog tsiaj qus poliovirus los ntawm Nigeria. Txawm li cas los xij, kev txhaj tshuaj tiv thaiv hnyav ntxiv hauv Africa, txawm li cas los xij, ua rau pom meej tshem tawm tus kab mob los ntawm thaj av; tsis muaj tus mob tau kuaj pom ntau dua ib xyoos hauv 2014-15.
Pom zoo:
Puas yog alanine tseem ceeb lossis tsis tseem ceeb?
No tseem ceeb amino acids suav nrog: alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, thiab tyrosine. Cov tshuaj amino acids feem ntau tsis tseem ceeb, tshwj tsis yog thaum muaj mob thiab kev ntxhov siab .
Vim li cas cov ntaub ntawv tseem ceeb tseem ceeb rau kev tswj hwm tebchaws Askiv?
Cov ntaub ntawv raug cai ntawm cov thawj coj hauv tebchaws Askiv ua haujlwm qhov tseem ceeb ntawm keeb kwm ntawm no lub sijhawm. Cov thawj coj hauv tebchaws Askiv ntseeg tias txhua qhov kev qhia, kev npaj, txoj cai, kev txiav txim siab, kev pom zoo, kev tshawb nrhiav yuav tsum tau sau kom meej.
Dab tsi yog qhov tseem ceeb thiab tsis tseem ceeb?
Qhov me dua p-tus nqi, qhov muaj zog pov thawj uas koj yuav tsum tsis lees paub qhov kev xav tsis tseeb. Ib qho p-tus nqi tsawg dua 0.05 (feem ntau ≤ 0.05) yog qhov tseem ceeb. … A p-tus nqi siab dua 0.05 (> 0.05) tsis yogqhov tseem ceeb thiab qhia cov pov thawj muaj zog rau qhov kev xav tsis zoo .
Puas yog qhov tseem ceeb tseem ceeb cuam tshuam?
Qhov tseem ceeb tseem ceeb tshaj plaws (aka core prime implicants) yog prime implicants uas npog cov txiaj ntsig ntawm kev ua haujlwm uas tsis muaj kev sib xyaw ua ke ntawm lwm cov kev cuam tshuam tseem ceeb tuaj yeem npog Cov txiaj ntsig ntawm txhua qhov tseem ceeb Qhov cuam tshuam ntawm Boolean muaj nuj nqi yog hu ua nws cov nyiaj ua tiav, qhov tsawg kawg nkaus npog, lossis Blake canonical daim ntawv .
Vim li cas cov cim tseem ceeb tseem ceeb?
Background. Cov cim tseem ceeb yog qhov tseem ceeb cov ntsiab lus ntawm kev saib xyuas tus neeg laus lossis tus menyuam qhov kev vam meej thaum mus pw hauv tsev kho mob, vim lawv tso cai rau kev tshawb pom sai ntawm kev rov qab los qeeb lossis cov xwm txheej tsis zoo.
