Micro-Operating Tais
Lus piav qhia luv luv:
Nws yog siv rau kev soj ntsuam cov duab ntawm oocytes, cumulus hlwb nyob rau hauv microscope, ua oocytes peripheral granular hlwb, txhaj cov phev mus rau hauv lub zes qe menyuam.
Petri tais diav yog dab tsi?
Petri tais yog ib qho ntiav cylindrical, round iav uas yog siv nyob rau hauv lub chaw soj nstuam rau kab lis kev cai sib txawv microorganisms thiab hlwb.Txhawm rau kawm cov kab mob xws li kab mob & kab mob raws li kev soj ntsuam zoo, nws yog ib qho tseem ceeb kom lawv cais tawm ntawm lwm hom lossis cov khoom.Hauv lwm lo lus, Petri tais diav yog siv los txhawb kev loj hlob ntawm cov kab mob.Ib txoj hauv kev zoo tshaj plaws los ua qhov no yog nrog kev pab ntawm kab lis kev cai nruab nrab hauv lub thawv tsim nyog.Petri phaj yog qhov kev xaiv zoo tshaj plaws rau kab lis kev cai nruab nrab phaj.
Lub phaj tau tsim los ntawm German bacteriologist hu ua Julius Richard Petri.Petri tais tsis yog xav tsis thoob, muaj npe tom qab nws.Txij li thaum nws tsim, Petri cov tais diav tau dhau los ua ib qho tseem ceeb tshaj plaws ntawm cov khoom siv kuaj.Hauv tsab xov xwm Science Equip no, peb yuav pom cov ncauj lus kom ntxaws yuav ua li cas siv Petri cov tais diav hauv cov cuab yeej siv tshawb fawb & nws ntau lub hom phiaj.
Vim li cas thiaj Siv Petri cov tais diav hauv chav kuaj?
Petri tais feem ntau yog siv los ua cov cuab yeej kuaj hauv thaj tsam ntawm biology & chemistry.Cov tais diav yog siv rau kab lis kev cai los ntawm kev muab qhov chaw cia thiab tiv thaiv kom tsis txhob kis kab mob.Txij li thaum lub tais yog pob tshab, nws yog ib qho yooj yim los soj ntsuam cov theem kev loj hlob ntawm cov kab mob kom meej meej.Qhov luaj li cas ntawm Petri phaj ua rau nws khaws cia nyob rau hauv lub microscope ncaj qha rau kev soj ntsuam yam tsis tas yuav hloov nws mus rau lub phaj microscopic.Nyob rau theem pib, Petri tais yog siv hauv tsev kawm ntawv thiab tsev kawm qib siab rau kev ua ub no xws li kev soj ntsuam cov noob germination.
Yuav siv Petri cov tais diav zoo li cas hauv chav kuaj
Ua ntej siv lub tais petri nws yog ib qho tseem ceeb kom paub tseeb tias nws yog huv si thiab tsis muaj microparticles uas yuav cuam tshuam rau qhov kev sim.Koj tuaj yeem ua kom qhov no los ntawm kev kho txhua cov tais diav uas siv tshuaj dawb thiab ua kom tsis muaj menyuam rau kev siv ntxiv.Xyuas kom koj sterilize Petri tais ua ntej siv thiab.
Txhawm rau saib xyuas kev loj hlob ntawm cov kab mob, pib nrog sau lub tais nrog agar nruab nrab (npaj nrog kev pab liab algae).Agar nruab nrab muaj cov as-ham, ntshav, ntsev, ntsuas, tshuaj tua kab mob, thiab lwm yam uas pab txhawb kev loj hlob ntawm cov kab mob.Ua raws li kev khaws cia Petri cov tais diav hauv lub tub yees hauv qhov chaw upside-down.Thaum koj xav tau cov kab lis kev cai, tshem tawm ntawm lub tub yees thiab siv lawv thaum lawv rov qab los ntawm chav tsev kub.
Tsiv mus tom ntej, coj tus qauv ntawm cov kab mob lossis lwm yam kab mob thiab maj mam hliv rau hauv kab lis kev cai lossis siv paj rwb swab los siv rau ntawm kab lis kev cai hauv zigzag.Xyuas kom koj tsis txhob siv ntau dhau vim qhov no yuav ua rau kev coj noj coj ua.
Thaum qhov no ua tiav, kaw lub tais Petri nrog lub hau thiab npog kom zoo.Khaws hauv qab li 37ºC rau ob peb hnub thiab cia nws loj hlob.Tom qab ob peb hnub, koj tus qauv yuav npaj rau kev tshawb fawb ntxiv.
