Txoj kev ua kom tsis muaj menyuam rau ntau yam khoom siv kho mob thiab cov qauv zaub mov dhau 40 xyoo dhau los suav nrog gamma tawg. Txawm li cas los xij, thaum siv gamma hluav taws xob rau kev ua kom tsis muaj menyuam ntawm cov ntaub so ntswg allografts thiab cov khoom siv kho mob polymer, cov qauv kev hloov pauv raug ntxias.
Puas yog hluav taws xob siv los ua kom tsis muaj menyuam?
Radiation yog ib txoj hauv kev nyab xeeb thiab muaj txiaj ntsig rau kev ua kom tsis muaj menyuam ib leeg siv cov khoom siv kho mob xws li cov koob txhaj tshuaj thiab hnab looj tes phais. Ib qho ntawm nws qhov txiaj ntsig tseem ceeb yog nws tso cai rau cov khoom ntim uas twb muaj lawm kom tsis muaj menyuam. Ntau yam khoom siv cawm txoj sia yog sterilized nrog hluav taws xob.
Cov hluav taws xob twg ua rau cov khoom siv kho mob zoo tshaj?
Gamma tawg sterilization yog daim ntawv nrov tshaj plaws ntawm kev ua kom tsis muaj hluav taws xob. [1, 4] Co-60 thiab, rau qhov tsawg dua, Cs-137 ua haujlwm raws li cov khoom siv hluav taws xob thiab kev puas tsuaj los tso tawm lub zog gamma rays. Cov hluav taws xob hluav taws xob tsim hluav taws xob yog qhov nkag tau zoo heev thiab tuaj yeem tua cov kab mob sib kis.
Cov hluav taws xob twg siv los ua kom tsis muaj menyuam?
Gamma irradiation yog lub cev / tshuaj txhais tau tias ua kom tsis muaj menyuam, vim tias nws tua cov kab mob los ntawm kev rhuav tshem cov kab mob DNA, inhibiting kab mob faib. Lub zog ntawm gamma rays dhau los ntawm cov khoom siv, cuam tshuam cov kab mob uas ua rau muaj paug.
hom hluav taws xob twg siv los ua kom tsis muaj zaub mov lossis khoom siv kho mob?
Gamma rays yog tawm los ntawm cov ntaub ntawv xov tooj cua ntawm lub caij cob alt (Cob alt 60) lossis ntawm lub caij cesium (Cesium 137). Gamma hluav taws xob yog siv niaj hnub los ua kom tsis muaj menyuam kho mob, kho hniav, thiab khoom siv hauv tsev thiab tseem siv rau kev kho hluav taws xob kho mob qog noj ntshav.
