Qhov sib txawv tseem ceeb ntawm histofreezer thiab kua nitrogen yog tias cov histofreezer yog cov khoom siv cryogenic uas muaj cov sib xyaw ntawm dimethyl ether thiab propane whereas cov kua nitrogen yog cov kua cryogenic uas muaj nitrogen hauv cov kua hauv lub xeev.
Cryogenics yog ib thaj chaw ntawm kev tshawb fawb uas peb kawm txog tus cwj pwm ntawm cov khoom ntawm qhov kub thiab txias. Cryogenic kua yog qhov nruab nrab uas peb siv los khaws cov ntaub ntawv ntawm qhov kub thiab txias. Histofreezer thiab kua nitrogen yog ob yam li cov kua cryogenic.
Histofreezer yog dab tsi?
Histofreezer yog cov khoom siv cryogenic uas peb hu ua "cryogen". Nws yog ib puag ncig kev nyab xeeb sib xyaw ntawm dimethyl ether thiab propane. Cov no yog gaseous Cheebtsam. Yog li ntawd, thaum peb tsuag cov roj no mus rau lub fam bud los ntawm ib tug applicator, nws ua ib tug qis kub uas yog nyob ib ncig ntawm -55 ° C ntawm nws tshav kub ntawm vaporization. Tus kws tshawb fawb Dr William Swart tau tsim qhov no cryogen thaum sim nrhiav lwm txoj hauv kev ua kua nitrogen. Nws tau sim nrhiav lwm txoj hauv kev no vim tias qhov tsis haum rau qhov txias txias ntawm cov kua nitrogen. Yog li, qhov txias txias ntawm histofreezer yog sov dua li cov kua nitrogen. Txawm li cas los xij, qhov no cryogen kim dua vim tias nws muaj tus nqi siab rau qhov khov. Ntxiv mus, nws muaj peev xwm muab tsawg dua freezes rau ib lub kaus poom, thiab nws muaj lub neej txee luv luv thiab hnub tas sij hawm.
Thaum xav txog qhov ua tau zoo ntawm histofreezer, nws cov txiaj ntsig tau raug pov thawj los ntawm 19 xyoo ntawm kev tshawb fawb. Nws yooj yim dua thiab nrawm dua li txiav lossis hlawv, thiab nws tsis tshua muaj kev cuam tshuam thiab. Ntxiv mus, nws muaj kev nyab xeeb heev rau cov neeg mob thiab ib puag ncig zoo. Nws kuj muab qhov yooj yim, siv ib txhais tes nrog kev pheej hmoo tsawg rau cov neeg siv.
Liquid Nitrogen yog dab tsi?
kua nitrogen yog nitrogen nyob rau hauv lub xeev ua kua. Cov kua no muaj nyob rau ntawm qhov kub thiab txias heev. Kub taw tes yog nyob ib ncig ntawm -195.79 ° C. Nws yog xim tsis muaj xim thiab meej. Tus kws tshawb fawb Zygmunt Wróblewski thiab Karol Olszewski tau tsim qhov sib xyaw no.
Daim duab 01: Kua Nitrogen
kua nitrogen yog cov kua dej cryogenic. Nws tuaj yeem ua rau khov sai thaum sib cuag nrog cov ntaub so ntswg nyob. Peb tuaj yeem khaws cov kua no kom ruaj ntseg hauv lub tshuab nqus tsev vacuum, tab sis qhov ua kom qeeb ntawm cov kua ua rau kev hloov pauv ntawm cov roj nitrogen. Tsis tas li ntawd, peb yuav tsum ua tib zoo saib xyuas qhov sib xyaw no vim tias nws tuaj yeem ua rau mob khaub thuas. Yog li ntawd, peb yuav tsum siv hnab looj tes tshwj xeeb thaum tuav cov kua dej no. Ntxiv rau qhov ntawd, nws tuaj yeem txo cov ntsiab lus oxygen hauv huab cua thiab ua haujlwm asphyxiant. Thaum siv nws ua ib qho cryogen, cov kws tshawb fawb feem ntau nyiam tshawb nrhiav lwm txoj hauv kev vim tias qhov txias txias ntawm qhov cryogen no tsis tuaj yeem ua rau ntau tus neeg mob.
Qhov txawv ntawm Histofreezer thiab Liquid Nitrogen yog dab tsi?
Histofreezer yog cov khoom siv cryogenic uas peb hu ua "cryogen". Nws muaj ib tug sib tov ntawm dimethyl ether thiab propane nyob rau hauv daim ntawv gaseous. Cov kua nitrogen, ntawm qhov tod tes, yog cov kua dej cryogenic. Nws muaj nitrogen hauv nws lub xeev cov kua. Qhov no yog ib qho tseem ceeb sib txawv ntawm histofreezer thiab kua nitrogen. Qhov tseem ceeb tshaj, qhov ntsuas kub ntawm histofreezer yog -55 ° C thiab nws kuj muaj qhov ua kom sov sov. Nyob rau hauv tas li ntawd, lub freezing kub ntawm cov kua nitrogen yog -195.79 ° C. Yog li ntawd, nws muaj ib tug intolerable freezing kub. Yog li ntawd, qhov txias txias yog lwm qhov sib txawv tseem ceeb ntawm histofreezer thiab kua nitrogen. Tsis tas li ntawd, histofreezer yog ib puag ncig zoo. Tab sis, kua nitrogen tuaj yeem txo cov pa oxygen hauv huab cua los ntawm kev ua haujlwm asphyxiant.
Summary – Histofreezer vs Liquid Nitrogen
Ob lub histofreezer thiab kua nitrogen yog cryogens. Qhov sib txawv tseem ceeb ntawm histofreezer thiab kua nitrogen yog tias histofreezer muaj cov sib xyaw ntawm dimethyl ether thiab propane thaum cov kua nitrogen muaj nitrogen hauv cov kua hauv lub xeev.
