Video: Cov emulsion tau tsim li cas?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Ib emulsion yog tsim thaum ob lub kua uas tsis sib tov (piv txwv li, roj thiab dej) tau sib koom ua ke kom faib cov kua mus rau lwm qhov, hauv daim ntawv ntawm tee. Emulsions tuaj yeem yog roj-hauv-dej (O/W) lossis dej-hauv-roj (W/O), nyob ntawm seb qhov txuas mus tas li yog dej lossis roj, feem.
Ib yam li ib tus yuav nug, ua li cas emulsions tsawg?
Txoj kev yooj yim tshaj plaws los tiv thaiv kev tsim ntawm ib qho emulsion yog kom maj mam yoog es tsis txhob co cov kab sib cais. Los ntawm swirling lub cais funnel lub agitation uas yuav ua rau lub emulsion kom tsim tau raug txo qis, tab sis thaj chaw ntawm kev sib cuag ntawm ob theem tau tswj hwm kom tso cai rau rho tawm kom tshwm sim.
Ib tug kuj nug, yuav ua li cas yog emulsion tsim thiab tswj? Kom tau ib tug ruaj khov, ruaj khov emulsion , koj yuav tsum tau siv qee yam los tuav cov tee dej sib txawv ua ke thiab tiv thaiv lawv ntawm kev sib cais. Nws tsim cov tshuaj lom nrog txhua cov kua thiab dhau los ua tus choj ntawm lawv. Feem ntau emulsifying tus neeg sawv cev yog lub qe qe, zoo li hauv mayonnaise thiab kua ntses hollandaise.
Kuj paub yog, vim li cas emulsion tseem ceeb?
Emulsions muaj txiaj ntsig zoo vim tias lawv tso cai rau kev xa cov khoom siv hauv dej uas pheej yig thiab tsis muaj nqi. Ib qho ntxiv kom zoo dua ntawm emulsions yog lawv tso cai rau dilution ntawm cov khoom xyaw nquag mus rau qhov kev pom zoo. Emulsions feem ntau siv nyob rau hauv ntau yam loj chemical kev lag luam.
Dab tsi yog emulsion hauv chemistry?
Ib emulsion yog sib tov ntawm ob lub kua uas ib txwm tsis sib xyaw. Ntawd yog hais, kev sib xyaw ntawm ob lub kua uas tsis paub qab hau. Los ntawm txhais, ib emulsion muaj cov khoom me me ntawm ib cov kua uas raug tshem tawm hauv lwm qhov. Tshuaj lom neeg, lawv yog colloids qhov twg ob theem yog kua.
Pom zoo:
Dab tsi yog lub npe ntawm cov khoom tsim uas yog qhov tseem ceeb rau kev pib tsim cov ntshav khov?
Thrombocytes (platelets) Megakaryocytes tsim los ntawm hemocytoblasts hauv cov pob txha liab. Thrombocytes dhau los ua nplaum thiab sib sau ua ke los ua cov platelet ntsaws uas kaw qhov tawg thiab kua muag hauv cov hlab ntshav. Lawv kuj pib tsim cov ntshav txhaws
Cov kab mob hauv qhov ncauj dab tsi metabolize sucrose tsim cov nplaum glucans thiab tsim cov quav hniav?
GTF yog qhov tseem ceeb enzyme uas catalyzes sucrose rau nplaum glucans thiab pab txhawb kev tsim cov hniav plaque nyob rau hauv uas lub tsub zuj zuj ntawm metabolic acids uas ua los ntawm cov kab mob colonies ua rau lub zos demineralization ntawm cov enamel nto (Loesche, 1986)
Qhov feem pua ntawm cov ntshav tau tsim los ntawm cov khoom tsim?
Cov qe ntshav no (uas tseem hu ua corpuscles lossis 'tsim cov ntsiab lus') suav nrog erythrocytes (cov qe ntshav liab, RBCs), leukocytes (cov qe ntshav dawb), thiab thrombocytes (platelets). Los ntawm qhov ntim, cov qe ntshav liab muaj li ntawm 45% ntawm cov ntshav tag nrho, cov ntshav plasma txog 54.3%, thiab cov qe dawb txog 0.7%
Yam twg ntawm cov tsos mob no yuav raug sau tseg hauv cov neeg mob ntshav qab zib uas tau tsim hemolysis?
Cov neeg mob uas muaj mob hnyav intradialytic hemolysis yws ntawm xeev siab, ua tsis taus pa, mob plab / nraub qaum, thiab ua daus no thiab pib mob ntshav siab (61). Cov ntaub ntawv kuaj pom tseeb suav nrog cov ntshav qis haptoglobin, nce lactate dehydrogenase, txo qis hauv hematocrit, thiab ntshav liab
Qhov twg ntawm cov hauv qab no tau tsim tawm hauv cov thyroid caj pas?
Koj cov thyroid ua 2 cov tshuaj tseem ceeb - triiodothyronine (T3) thiab thyroxine (T4). Qhov tsim nyog ntawm iodine (cov khoom siv tshuaj uas yog ib feem tseem ceeb ntawm peb cov khoom noj) yog xav tau rau cov thyroid kom tuaj yeem ua cov tshuaj hormones no. Lwm cov tshuaj uas tsim tawm hauv koj cov qog ua kua qog hu ua calcitonin