2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Power, tshwj xeeb tshaj yog qib voltage, xa los ntawm cov kab xa tawm raug txo, lossis "tso nqis," los ntawm kev hloov pauv thiab xa mus los ntawm cov kab xa tawm, uas txuas nrog tom tsev thiab kev lag luam. … Nws yog ceg kawg ntawm kev xa hluav taws xob los ntawm ib tiam mus rau cov neeg siv khoom.
Kev xa hluav taws xob hluav taws xob ua haujlwm li cas los ntawm tiam mus rau kev faib tawm?
Tom qab hluav taws xob tsim tawm, nws yog kis mus rau qhov deb uas siv cov kab sib kis. … Nyob rau hauv qhov chaw ua hauj lwm, kis tau tus mob substations txo qhov kis tau tus mob mus rau 34, 500–138, 000 volts. Lub hwj chim no yog tom qab ntawd nqa los ntawm cov kab mus rau cov kab ke faib khoom nyob hauv thaj chaw pabcuam hauv zos.
Lub zog xa mus li cas?
Kev xa hluav taws xob feem ntau ua tiav nrog cov kab nyiaj siv ua haujlwmvim qhov no yog txoj hauv kev lag luam tshaj plaws. Kev sib kis hauv av los ntawm cov hluav taws xob hluav taws xob hluav taws xob yog xaiv nyob rau hauv cov neeg coob coob hauv nroog thiab hauv high-voltage direct-tam sim no (HVDC) submarine kev sib txuas.
Dab tsi yog qhov sib txawv ntawm tiam sib kis thiab kev faib tawm?
Cov kab hluav taws xob sib kis tau ntev-nrug, kev thauj khoom hluav taws xob siab. … Cov kab hluav taws xob faib yog kom luv luv thiab thauj cov hluav taws xob qis dua ntawm qhov ntsuas hauv zos. Cov zog nocov kab tau teeb tsa, thiab pom, raws ob sab ntawm txoj kev.
Dab tsi yog theem sib txawv ntawm lub zog tsim hluav taws xob sib kis thiab xa tawm?
Muaj peb theem ntawm cov khoom siv hluav taws xob;tiam, kis thiab faib. Txhua theem no suav nrog cov txheej txheem tsim khoom sib txawv, kev ua haujlwm thiab kev phom sij.
Pom zoo:
Ntawm kev pauv pauv pauv hloov pauv?
Kev sib pauv pauv hloov pauv yog daim ntawv cog lus nyiaj txiag uas tau teev tseg thiab ua lag luam ntawm kev sib pauv hloov pauv. Qhov yooj yim hais, cov no yog cov khoom siv uas tau pauv pauv hauv kev tswj hwm. … Cov yav tom ntej thiab cov kev xaiv yog ob qho kev sib pauv uas nrov tshaj plaws.
Qhov kev hloov pauv no puas yuav ua rau muaj kev hloov pauv hloov pauv?
Yog li, yog tias muaj kev hloov pauv, piv txwv li, kev ntxig lossis tshem tawm ntawm nucleotide, tshwm sim, qhov no tuaj yeem ua rau kev hloov pauv ntawm kev nyeem ntawv. Nws hloov tag nrho cov amino acid ib ntus. Cov kev hloov pauv no yog hu ua frameshift mutation (tseem hu ua kev nyeem ntawv hloov pauv, nyeem ntawv hloov pauv, lossis framing yuam kev).
Qhov twg yog qhov kev hloov pauv hloov pauv hloov pauv?
Semiconservative replication piav qhia txog cov txheej txheem ntawm DNA replication nyob rau hauv tag nrho cov paub hlwb. DNA replication tshwm sim ntawm ntau lub hauv paus pib ntawm kev rov ua dua raws DNA qauv strand. Raws li DNA ob chav helix yog unwound by helicase, replication tshwm sim nyias ntawm txhua tus qauv strand nyob rau hauv antiparallel cov lus qhia.
Qhov kev hloov pauv twg yog xav tias yuav cuam tshuam los ntawm kev hloov pauv hloov pauv?
Dependent Variable Qhov sib txawv uas nyob ntawm lwm yam uas ntsuas. Cov kev hloov pauv no yuav tsum tau hloov pauv raws li qhov kev sim ua haujlwm ntawm tus kheej hloov pauv lossis hloov pauv. Nws yog cov nyhuv presumed. Qhov kev tshawb fawb hloov pauv twg yog qhov tshwm sim?
Los ntawm kev hloov pauv hloov pauv hloov pauv?
Kev hloov pauv hloov pauv hloov pauv (TMA) yog qhov isothermal (tsis hloov pauv nucleic acid kub), ib leeg-tube nucleic acid amplification system siv ob lub enzymes, RNA polymerase thiab thim rov qab kev sau ntawv. … Cov txheej txheem no tuaj yeem siv los tsom rau RNA thiab DNA.
