2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Nyob ntawm cov dej kub uas yuav tsum tau muaj rau cov tsiaj hauv dej ntawm ntau theem ntawm lub neej, cov txheej txheem muaj nuj nqis ntawm 5 txog 9.5 mg l-1, piv txwv li qhov tsawg kawg nkaus cov pa oxygen concentration ntawm 5-6 mg l-1 rau cov dej sov biota thiab 6.5-9.5 mg l-1 rau cov dej txias biota.
Leej twg pom zoo cov qauv dej haus?
Lub Koom Haum Saib Xyuas Kev Noj Qab Haus Huv Ntiaj Teb (WHO) Cov Lus Qhia rau Kev Haus Dej Zoo (GDWQ) suav nrog cov lus pom zoo hauv qab no txwv rau cov khoom tsim muaj tshwm sim uas yuav muaj kev cuam tshuam rau kev noj qab haus huv ncaj qha: Arsenic 10μg / l . Barium 10μg/l. Boron 2400μg/l.
Dab tsi yog qhov tseem ceeb physicochemical parameters ntawm dej zoo?
Lub cev tsis muaj tshuaj lom neeg xws li dej kub, pH, yaj oxygen, oxygen saturation, conductivity, salinity, secchi disc qhov tob, nitrate, nitrite, orto-phosphate, sulfate, chloride, tag nrho hardness, calcium thiab magnesium tau txheeb xyuas hauv cov qauv dej.
Dab tsi yog qhov ntsuas ntsuas hauv cov qauv dej zoo?
Muaj peb hom dej tsis zoo lub cev, tshuaj, thiab lom neeg[8, 9].
Dab tsi yog 6 lub ntsiab lus qhia txog dej zoo?
Cov kws tshawb fawb ntsuas ntau yam khoom los txiav txim siab dej zoo. Cov no suav nrog kub, acidity (pH), yaj cov khib nyiab (kev coj ua tshwj xeeb),particle teeb meem (turbidity), yaj oxygen, hardness thiab suspended sediment.
Pom zoo:
Puas muaj leej twg muaj txoj sia nyob tsis muaj tus kab mob vwm?
Kev Kho Mob Tsis Paub: Tsuas yog Ib Tus Neeg Muaj sia nyob tus kab mob vwm yam tsis muaj tshuaj tiv thaiv - Tab sis ua li cas? Plaub xyoos tom qab nws yuav luag tuag los ntawm tus kab mob vwm, Jeanna Giese tau raug tshaj tawm raws li thawj tus neeg paub tias tau muaj tus kab mob no tsis tau txais tshuaj tiv thaiv.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Puas yog nws tsis muaj kev khuv leej lossis tsis muaj kev khuv leej?
Raws li adjective qhov txawv ntawm uncompassionate thiab incompassionate. yog tias tsis muaj kev khuv leej tsis muaj kev khuv leejthaum tsis muaj siab tsis muaj kev khuv leej; tsis muaj kev hlub los yog kev khuv leej. Puas yog lus tsis sib haum xeeb?
Leej twg tus qauv rau coliforms hauv dej haus?
The EPA Maximum Contaminant Level Maximum Contaminant Level Maximum contaminant Level (MCLs) yog cov qauv tsim los ntawm United States Environmental Protection Agency (EPA) rau cov dej haus zoo. Ib qho MCL yog qhov kev cai lij choj txwv rau tus nqi ntawm cov tshuaj uas tau tso cai hauv cov dej hauv pej xeemraws li Txoj Cai Dej Haus Zoo (SDWA).
Cov qauv twg yog kab nrog cov hlwb uas tsis tuaj yeem nkag mus rau dej?
Cov phospholipid bilayer phospholipid bilayer Cov kab mob lom neeg muaj cov txheej txheem txuas ntxiv ntawmlipid molecules nyob rau hauv uas membrane proteins yog embedded. Cov lipid bilayer no yog cov kua dej, nrog rau ib tus neeg lipid molecules tuaj yeem nthuav tawm sai sai hauv lawv tus kheej monolayer.
