2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Thaum kev ncua ntawm cov kab mob loj hlob hauv cov kua nruab nrab tau ua rau kev tshawb pom ntawm cov yam ntxwv tseem ceeb ntawm microbial physiology thiab noob caj noob ces, nyob rau hauv cov kab mob tsis tshua loj hlob li axenic planktonic kab lis kev cai. Hloov chaw, lawv feem ntau muaj xws li cov zej zog ntawm cov hlwb tsis muaj zoguas tsim los ua biofilms [1–3].
Puas muaj cov hlwb planktonic tuaj yeem pom hauv biofilms?
Lub peev xwm ntawm cov hlwb planktonic tsim biofilm yog tsim tau zoo thiab ua qauv qhia los ntawm ntau hom kab lis kev cai ntshiab hauv vitro.
Yuav ua li cas biofilms txawv ntawm planktonic hlwb?
Biofilms yog tiag tiag hnyav tua los ntawm cov kab mob bactericidal antimicrobials, piv rau logarithmic-theem planktonic hlwb, thiab yog li ua rau pom kev ua siab ntev. Nws tau xav tias biofilms kuj tseem muaj peev xwm tiv taus ntau dua li cov kab mob nyob ruaj khov-phase planktonic.
Peb pom cov hlwb dab tsi hauv biofilms?
Biofilms yog ib pawg ntawm ib lossis ntau hom kab mob uas tuaj yeem loj hlob ntawm ntau qhov chaw sib txawv. Cov kab mob uas tsim biofilms suav nrog kab mob, fungi thiab protists. Ib qho piv txwv ntawm biofilm dental plaque, slimy buildup ntawm cov kab mob uas tsim rau ntawm cov hniav.
Planktonic hlwb yog dab tsi?
Planktonic hlwb txhais tau hais tias " raws li cov kab mob dawb ntws hauv kev ncua" as. tawm tsam lub xeev sessile (lub npe hu ua biofilm): "aCov kab mob sib xyaw ua ke ntawm cov kab mob. hlwb nyob rau hauv ib tug self-tsim polymeric matrix thiab adherent rau ib tug inert los yog nyob. nto" raws li tau hais los ntawm Costerton thiab cov neeg ua haujlwm ua haujlwm (1999).
Pom zoo:
Cov hlwb haploid tsim nyob rau hauv tib neeg nyob qhov twg?
Nyob hauv tib neeg, n=23. Gametes muaj ib nrab ntawm cov chromosomes uas muaj nyob rau hauv ib txwm diploid hlwb ntawm lub cev, uas tseem hu ua somatic hlwb. Haploid gametes yog tsim thaum meiosis, uas yog hom kev faib ntawm tes uas txo cov chromosomes hauv niam txiv diploid cell los ntawm ib nrab.
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 amyloplasts pom nyob rau hauv cov tsiaj hlwb?
Cov kab mob no feem ntau pom muaj nyob rau hauv cov khoom nruab nrog hauv qab, xws li tubers (qos yaj ywm), corms (taro & dasheen), thiab cov hauv paus hniav (cov qos yaj ywm qab zib). Amyloplasts kuj yog pom hauv txiv tsawb thiab lwm yam txiv hmab txiv ntoo.
Qhov teeb meem grey thiab dawb nyob rau hauv lub hlwb nyob qhov twg?
Cerebral cortex - Txheej txheej ntawm lub hlwb, lub paj hlwb cortex, muaj cov kab ntawm grey teeb meem neurons, nrog cov teeb meem dawb nyob hauv qab. Qhov chaw no yog qhov tseem ceeb rau ntau qhov kev kawm siab dua, suav nrog kev mloog, kev nco, thiab kev xav.
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.
