Thaum tus qauv dej ntshiab txias nws tuaj yeem nyob hauv cov kua hauv lub xeev ntawm qhov kub thiab txias hauv qab nws qhov melting point (0 degrees C). … Cov khoom uas pab txhawb qhov kev hloov pauv no kom nws tshwm sim ntawm kuj kub qis-zero kub yog hu ua ice nucleators. Ntau yam kab mob muaj sia tsim cov dej khov nab kuab.
Ice particles yog dab tsi?
Ib qho dej khov nab kuab, tseem hu ua ice nucleating particle (INP), yogparticle uas ua raws li lub hauv paus rau kev tsim cov dej khov hauv cov huab cua.
Yuav ua li cas khov nuclei?
Ntshav nucleus, txhua yam hais tias, thaum muaj nyob rau hauv ib qho loj ntawm cov dej supercooled, yuav ua rau kev loj hlob ntawm cov dej khov dej khov ntawm nws tus kheej; feem ntau cov dej khov nab kuab nyob rau hauv cov cua xav tias tsim nyob rau hauv khov nuclei.
Dab tsi yog homogeneous ice nucleation?
vojvoog, nyob rau hauv tus txheej txheem hu ua homogeneous ice nucleation, yuav tsum kub ntawm lossis qis dua −39 ° C (−38 ° F). Thaum nag los nag yuav khov ze 0 ° C, cov huab cua me me muaj cov molecules tsawg dhau los tsim cov dej khov nab kuab los ntawm random lub caij nyoog kom txog thaum lub molecular txav qeeb raws li qhov kub…
Pseudomonas syringae kub npaum li cas ua rau cov dej khov nab kuab?
Qhov lawv tau paub yog tias ntawm cov chaw cog ntoo, P. syringae tuaj yeem ua rau cov dej khov ua rau qhov kub thiab txias siab li -2˚C. Saib seb cov kab mob puas tuaj yeem ua huab cua condensation nuclei pab neeg skied thoob ntiaj teb rauSau daus thiab dej khov: Fabkis, Montana, Yukon, txawm Antarctica.
