yuav ua li cas centrifugation sib cais ua haujlwm
Kev Sib Cais Centrifugation: Qhib Cov Kev Paub Tsis Meej ntawm Kev Ua Tau Zoo thiab Kev Ua Haujlwm Zoo
Kev Taw Qhia:
Kev sib cais centrifugation yog ib qho txheej txheem zoo kawg nkaus uas tau hloov pauv kev tshawb fawb thiab ntau yam kev siv hauv kev lag luam. Nws cuam tshuam nrog kev siv lub zog centrifugal los cais cov khoom me me raws li lawv qhov loj me, qhov ceev, thiab qhov ceev ntawm cov dej noo. Cov txheej txheem muaj zog no pom kev siv dav hauv ntau qhov chaw, los ntawm biochemistry thiab tshuaj mus rau kev tshawb fawb ib puag ncig thiab kev kho dej khib nyiab. Hauv tsab xov xwm no, peb tshawb nrhiav cov haujlwm sab hauv ntawm kev sib cais centrifugation, nws cov ntawv thov, ntau hom centrifuges, thiab cov txheej txheem tom qab lawv txoj haujlwm.
I. Lub Ntsiab Cai ntawm Kev Sib Cais Centrifugal:
Kev sib cais ntawm centrifugation yog raws li lub hauv paus ntsiab lus uas cov khoom hnyav dua feem ntau yuav poob sai dua li cov khoom sib dua thaum raug lub zog centrifugal. Los ntawm kev sib xyaw ua ke ntawm qhov ceev ceev, cov khoom me me ntawm ntau qhov ntau thiab tsawg sib txawv tuaj yeem sib cais tau zoo. Lub zog centrifugal uas tsim los ntawm kev sib hloov tig thawb cov khoom me me mus rau ntawm phab ntsa ntawm centrifuge, ua rau muaj cov txheej sib cais sib txawv.
II. Hom Centrifuges:
A. Kev Sib Tw Centrifugation Sib Txawv:
Kev sib txawv centrifugation yog ib qho ntawm cov txheej txheem siv ntau tshaj plaws los cais cov khoom ntawm lub cell. Nws suav nrog ntau qhov kev sib hloov ntawm centrifugation ntawm ntau qhov ceev thiab lub sijhawm sib txawv, tso cai rau kev cais cov khoom sib txawv raws li lawv cov nqi sedimentation. Txoj kev no yog siv dav hauv kev tshawb fawb txog lub cell los cais cov organelles thiab ntxuav cov khoom ntawm lub cell.
B. Kev Siv Centrifugation Gradient Density:
Kev siv cov txheej txheem centrifugation uas muaj qhov ceev sib txawv xws li siv cov txheej txheem density gradient, xws li sucrose lossis cesium chloride, los tsim cov txheej txheem density sib txawv. Cov qauv no tau muab tso rau saum cov txheej txheem gradient thiab raug rau lub zog centrifugal. Thaum cov khoom me me poob rau hauv cov txheej txheem gradient, lawv sib cais ua cov kab sib txawv raws li lawv qhov ceev. Txoj kev no muaj txiaj ntsig zoo rau kev sib cais cov qauv subcellular, xws li ribosomes thiab cov kab mob.
C. Kev Siv Lub Tshuab Centrifugation Loj:
Ultracentrifugation yog hais txog kev siv cov centrifuges ceev ceev uas tuaj yeem ua tiav qhov ceev ntawm 60,000 txog ntau dua 100,000 revolutions ib feeb (rpm). Cov ultracentrifuges tsim cov zog centrifugal muaj zog heev, tso cai rau kev sib cais ntawm txawm tias cov khoom me me tshaj plaws. Cov txheej txheem no pom cov ntawv thov hauv cov teb xws li biochemistry, qhov twg nws yog siv los kawm cov molecules xws li cov protein thiab nucleic acids.
III. Kev Sib Cais Los Ntawm Centrifugation Hauv Kev Xyaum:
A. Kev Lag Luam Tshuaj:
Kev sib cais los ntawm centrifugation ua lub luag haujlwm tseem ceeb hauv kev lag luam tshuaj. Nws yog siv los ntxuav cov tshuaj, tshem tawm cov khoom tsis huv, sib cais cov tshuaj sib xyaw, thiab cais cov khoom xyaw nquag. Los ntawm kev tswj hwm lub zog centrifugal thiab lub sijhawm kom raug, cov tuam txhab tshuaj tuaj yeem sib cais thiab rho tawm cov tshuaj muaj nqis los ntawm cov khoom sib xyaw ua ke.
B. Kev Tshawb Fawb Txog Ib Puag Ncig:
Kev sib cais ntawm centrifugation yog siv dav hauv kev tshawb fawb txog ib puag ncig thiab kev tswj hwm kev ua qias tuaj. Nws pab cov kws tshawb fawb soj ntsuam cov qauv av, cais cov pa phem tawm ntawm cov dej khib nyiab, thiab piav qhia txog cov khoom me me hauv huab cua. Los ntawm kev txiav txim siab qhov kev faib tawm thiab cov khoom sib txawv, cov kws tshawb fawb tau txais kev nkag siab txog cov chaw ua qias tuaj, txo cov kev cuam tshuam tsis zoo rau ib puag ncig.
C. Kev Tshuaj Xyuas Ntshav:
Kev siv lub tshuab centrifugation ua lub luag haujlwm tseem ceeb hauv cov chaw kuaj mob rau ntau yam kev kuaj ntshav. Cov qauv ntshav feem ntau raug siv lub tshuab centrifugation los cais cov plasma, serum, thiab cov qe ntshav sib txawv. Cov txheej txheem no tseem ceeb heev rau kev kuaj mob ntau yam kab mob thiab saib xyuas kev noj qab haus huv ntawm cov neeg mob.
IV. Cov Txheej Txheem Tom Qab Kev Sib Cais Centrifugal:
A. Qhov Ceev ntawm Cov Av Nqus:
Qhov ceev ntawm cov khoom me me hauv lub centrifuge feem ntau yog cuam tshuam los ntawm lawv qhov loj me thiab qhov ceev. Cov khoom loj dua thiab ntom dua ua rau cov khoom me me sai dua, tsim cov khaubncaws sab nraud povtseg sib txawv. Los ntawm kev kho lub zog centrifugal thiab lub sijhawm, cov kws tshawb fawb tuaj yeem xaiv cais cov khoom me me tshwj xeeb raws li lawv cov yam ntxwv ntawm kev ua kom cov khoom me me.
B. Kev nrawm ntawm lub hauv paus:
Kev nrawm ntawm lub centripetal yog lub zog uas ua rau cov khoom me me txav mus los hauv txoj kev voj voog hauv lub centrifuge. Nws yog qhov sib piv ncaj qha rau lub xwmfab ntawm qhov ceev ntawm kev sib hloov thiab qhov deb ntawm cov khoom me me ntawm lub axis ntawm kev sib hloov. Kev nkag siab txog kev sib raug zoo ntawm kev nrawm ntawm lub centripetal thiab qhov ceev ntawm kev sib cais yog qhov tseem ceeb rau kev tswj hwm cov txheej txheem sib cais kom zoo.
C. Tsim Rotor:
Lub rotor centrifuge ua lub luag haujlwm tseem ceeb hauv kev cais cov khoom me me kom zoo. Cov qauv tsim ntawm rotor tuaj yeem sib txawv raws li daim ntawv thov, ua kom haum rau ntau yam ntim, qhov loj ntawm lub raj, thiab cov qauv xav tau. Cov yam ntxwv xws li lub rotor zoo li cas, lub kaum sab xis, thiab qhov ceev sib xws cuam tshuam rau qhov ua tau zoo ntawm kev cais centrifuge.
Xaus lus:
Kev sib cais centrifugation yog ib txoj kev siv zog uas tau hloov pauv ntau yam kev tshawb fawb thiab kev lag luam. Los ntawm kev siv lub zog ntawm lub zog centrifugal, cov kws tshawb fawb tuaj yeem sib cais cov khoom me me ntawm ntau qhov loj me thiab qhov ceev. Txij li cov tshuaj mus rau kev tshawb fawb ib puag ncig thiab kev kuaj mob, kev sib cais centrifugation txuas ntxiv pab txhawb rau kev nce qib hauv kev tshawb fawb thiab thev naus laus zis. Thaum cov kws tshawb fawb nkag siab tob dua txog cov txheej txheem me me hauv qab cov txheej txheem no, peb tuaj yeem cia siab tias yuav muaj kev siv tshiab dua thiab kev ua haujlwm zoo dua yav tom ntej.
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