Kev soj ntsuam kuaj yog me me ib leeg-stranded DNA lossis RNA fragments (kwv yees li 20 txog 500 bp) siv los txheeb xyuas cov nucleic acid sib txuas.Ob-stranded DNA yog denatured los ntawm cua sov los ua ib leeg-stranded, thiab ces sau nrog radioisotopes (feem ntau phosphorus-32), fluorescent dyes, los yog enzymes (xws li horseradish peroxidase) los ua probes.Phosphorus-32 feem ntau yog muab tso rau hauv pawg phosphate ntawm ib qho ntawm plaub nucleotides uas tsim DNA, thiab fluorescent dyes thiab enzymes yog covalently txuas rau nucleic acid sequences.
Tam sim no nyob rau hauv lub xeem fixture, lub xeem sojntsuam yog siv los ua ib tug nruab nrab, lub sojntsuam muab tso rau hauv lub casing, lub sojntsuam lub taub hau tiv tauj cov khoom yuav tsum tau kuaj, thiab cov hlau lead hlau ntawm casing nyob rau hauv lwm yam kawg ua lub teeb liab, thiab lub tau txais teeb liab yog nyob rau hauv lub tester.Piv txwv li, tus resistor siv ib qhov chaw tam sim no los xam qhov voltage poob thoob plaws qhov kev sojntsuam, thiab lub capacitor siv lub qhov hluav taws xob tas li los xam qhov nqes hav ntawm lub sijhawm them ntawm ntau zaus.Kev sojntsuam muaj cov yam ntxwv ntawm kev siv tas li thaum nws ua rau hauv ib qho khoom siv, thiab tus nqi tsis siab.Nws tau siv dav hauv cov zej zog sim.
Muaj ntau hom kev sojntsuam lub taub hau hom.Qhov laj thawj tseem ceeb yog cov ntsiab lus sib txawv yuav tsum muaj ntau hom taub hau.Piv txwv li, dip ko taw siv ntau hom claw taub hau, xeem pad ntsiab lus siv taw tes, puag ncig lossis lub taub hau tiaj tus, thiab IC pins siv plum paj.Lub taub hau zoo, thiab lwm yam yog txhua tus xaiv los ntawm cov neeg ua haujlwm paub txog kev tsim khoom raws li cov khoom ntawm PCB tiav.
Nanometering tsuas yog ntxiv dag zog rau cov khoom siv rau kev sojntsuam, thiab tsis muaj kev cuam tshuam rau qhov kev sim ntsuas.Yog tias koj txaus siab, qhov cuam tshuam ntawm qhov kev sim ntsuas yuav tsum yog ib feem ntawm qhov ntsuas ntsuas, xws li AOI nrhiav pom.
Post lub sij hawm: May-19-2022