Lus Txhais: Lub peev xwm barrier nyob rau hauv lub PN-hluav taws xob diode yog lub barrier nyob rau hauv uas tus nqi yuav tsum tau ntxiv quab yuam rau hla lub cheeb tsam. Kawg hloov kho: 2023-12-15 23:12
Cov hluav taws xob tsis zoo raug them, thiab yog li cuam tshuam rau qhov zoo kawg ntawm lub roj teeb thiab rov qab los ntawm qhov kawg kawg. Yog li thaum lub roj teeb txuas mus rau ib yam dab tsi uas cia cov electrons ntws los ntawm nws, lawv ntws los ntawm qhov tsis zoo mus rau qhov zoo. Kawg hloov kho: 2023-12-15 23:12
Nitrogen thiab oxygen yog ob lub gases uas ua rau feem ntau ntawm lub ntiaj teb huab cua, thiab lawv tshwm sim hauv Mercury thiab. Kev nplua nuj ntawm nitrogen yog 2.7 feem pua ntawm Mercury huab cua, thiab cov pa oxygen rau 0.13 feem pua. Hauv ntiaj teb, cov nroj tsuag muaj lub luag haujlwm rau kev tsim cov pa oxygen. Kawg hloov kho: 2023-12-15 23:12
Geologic cov qauv feem ntau yog tshwm sim los ntawm cov muaj zog tectonic rog uas tshwm sim hauv lub ntiaj teb. Cov rog no ua rau pob zeb tawg, ua kom muaj kev sib sib zog nqus, thiab tsim cov roob. Cov txheej txheem geology yog kev kawm txog cov txheej txheem uas ua rau tsim cov qauv geology thiab yuav ua li cas cov qauv no cuam tshuam rau pob zeb. Kawg hloov kho: 2023-12-15 23:12
Erosion yog cov txheej txheem uas ntuj tsim txav cov pob zeb thiab av los ntawm ib qho mus rau lwm qhov. Deposition tshwm sim thaum cov neeg ua hauj lwm (cua los yog dej) ntawm erosion nteg cov sediment. Deposition hloov cov duab ntawm thaj av. Erosion, weathering, thiab deposition yog ua hauj lwm nyob txhua qhov chaw ntawm lub ntiaj teb. Kawg hloov kho: 2023-12-15 23:12
Hla hla tshwm sim thawj zaug ntawm meiosis. Vim tias qhov zaus ntawm kev hla ntawm ib qho kev sib txuas ntawm ob lub noob yog qhov sib npaug rau qhov sib txawv ntawm cov chromosomal ntawm lawv, hla ntau zaus yog siv los tsim cov caj ces, lossis kev sib txuas, daim duab qhia ntawm cov noob ntawm chromosomes. Kawg hloov kho: 2023-12-15 23:12
Lawv, nyob rau hauv kev txiav txim: Hnub, hli, ntiaj teb, dej, hluav taws, ntuj, cua, paj, xob laim, tsaus ntuj, hiav txwv thiab daim iav. Nyeem lossis Tuag muaj lub zog tseem ceeb ntawm Ntawv. Nws yog tus cwj pwm lub zog, cov neeg siv nyiam nyeem. Kawg hloov kho: 2023-12-15 23:12
Recombination yog cov txheej txheem uas cov khoom ntawm DNA tau tawg thiab rov ua dua los tsim cov kev sib txuas tshiab ntawm alleles. Crossovers ua rau recombination thiab pauv cov khoom siv caj ces ntawm niam thiab txiv chromosomes. Yog li ntawd, cov xeeb ntxwv tuaj yeem muaj kev sib txawv ntawm cov noob ntau dua li lawv niam lawv txiv. Kawg hloov kho: 2023-12-15 23:12
Cov chav kawm dav yog qhov sib txawv ntawm cov chav kawm sab sauv lossis qis qis ntawm cov chav kawm sib law liag. Txhua chav kawm yuav tsum muaj qhov dav dav dav. Hauv qhov no, chav kawm dav sib npaug rau qhov sib txawv ntawm qhov qis qis ntawm thawj ob chav kawm. Kawg hloov kho: 2023-12-15 23:12
Shearing vines / reeds / kelp / xyoob kom txwv tsis pub lawv loj hlob ntxiv. Txoj cai nyem nrog txiab ntawm ib qho ntawm cov nroj tsuag saum toj no (cov nroj tsuag uas lub cev loj tuaj) kom tsis txhob loj hlob ntxiv. Kawg hloov kho: 2023-12-15 23:12
Bernoulli txoj ntsiab cai tuaj yeem siv rau ntau lub sijhawm niaj hnub. Piv txwv li, lub hauv paus ntsiab lus no piav qhia tias vim li cas lub dav hlau tis yog nkhaus raws sab saum toj thiab yog vim li cas cov nkoj yuav tsum txav deb ntawm ib leeg thaum lawv dhau mus. Lub siab saum lub tis yog qis dua hauv qab nws, muab kev txhawb nqa los ntawm hauv qab tis. Kawg hloov kho: 2023-12-15 23:12
Vanadium (V) phosphate yog ib qho ioniccompound ua los ntawm vanadium (V) cations thiab phosphate anions. Tus (V) Roman tus lej siv rau lub npe cation qhia tias vanadium, hloov pauv hlau, yog nyob rau hauv nws lub xeev +5 oxidation, piv txwv li cov vanadium cationcarries 5+ nqi. Kawg hloov kho: 2023-12-15 23:12
Kev hloov pauv hloov pauv (tseem hu ua framingerror lossis kev hloov pauv hloov pauv) yog kev hloov pauv caj ces los ntawm indels (insertions lossis deletions) ntawm ntau tus nucleotides hauv DNA ib ntus uas tsis sib faib los ntawm peb. Ib hom kev hloov pauv uas ib ntu ntawm DNA tau txav los ntawm ib qho chromosome mus rau lwm qhov. Kawg hloov kho: 2023-12-15 23:12
Siv cov tshuaj tua kab mob tooj liab (2 oz / nkas loos dej) txhua 7 hnub lossis tsawg dua, tom qab los nag hnyav los yog thaum tus kab mob nce sai. Yog tias ua tau, lub sijhawm thov kom tsawg kawg 12 teev ntawm huab cua qhuav raws li daim ntawv thov. Kawg hloov kho: 2023-12-15 23:12
Willow Hybrid yog tsob ntoo deciduous uas poob nws nplooj thaum lub caij ntuj no. Txawm li cas los xij, txawm tias cov ceg ntoo yog qhov muaj txiaj ntsig zoo ntiag tug hedge thiab cua daj cua dub txhua lub caij. Kawg hloov kho: 2023-12-15 23:12
Txhais. (uniform, homogeneous) los yog homogeneous cheeb tsam yog ib cheeb tsam nyob rau hauv uas txhua leej txhua tus koom nyob rau hauv ib tug ntau yam los yog ntau yam yam ntxwv. Shared feature can = kab lis kev cai tus nqi (lus, ib puag ncig kev nyab xeeb). Kawg hloov kho: 2023-12-15 23:12
Kev hloov pauv ntawm cov hlwb yog cov cuab yeej siv dav thiab ntau yam hauv kev tsim cov noob caj noob ces thiab yog qhov tseem ceeb hauv kev txhim kho molecular biology. Lub hom phiaj ntawm cov txheej txheem no yog ua kom paub cov plasmid txawv teb chaws rau hauv cov kab mob, cov kab mob ces ua kom cov plasmid, ua kom muaj ntau ntawm nws. Kawg hloov kho: 2023-12-15 23:12
Lub ntiaj teb yog tus qauv ntawm lub ntiaj teb, siv los tiv thaiv kev cuam tshuam hauv kev sib raug zoo ntawm lub ntiaj teb. Maps ntawm lub ntiaj teb no yog distorted los ntawm kev sim ua ib puag ncig khoom haum rau ib tug tiaj tus. Lub ntiaj teb yog puag ncig, yog li nws tseem muaj tseeb. Lub ntiaj teb muab qhov ntsuas qhov tseeb ntawm qhov chaw nyob deb npaum li cas. Kawg hloov kho: 2023-12-15 23:12
Technetium yog cov khoom siv hluav taws xob zoo tshaj plaws ntawm lub rooj sib tham thiab nws cov isotopes lwj mus rau ntau yam ntawm lwm cov ntsiab lus suav nrog ruthenium ruaj khov. Qhov txiaj ntsig loj ntawm technetium-99m (ib nrab-lub neej rau teev) yog tias nws tau tsim los ntawm kev lwj los ntawm cov isotope molybdenum-99 nyob ntev dua (ib nrab-lub neej 67 teev). Kawg hloov kho: 2023-12-15 23:12
Piv txwv ntawm qhov tseem ceeb latitudelines/parallelsinclude: Equator: 0 degrees ntawm latitude. Arctic Circle: yog 66.5 degrees sab qaum teb. Antarctic vajvoog: 66.5 degrees sab qab teb. Tropic ntawm Capricorn: 23.4 degrees sab qab teb. Tropic ntawm Cancer: 23.4 degrees sab qaum teb. Kawg hloov kho: 2023-12-15 23:12
DPS sawv cev rau Degrees Ib Thib Ob, yog li 360 DPS txhais tau tias 60 RPM (revolutions ib feeb) lossis 1 kiv puag ncig ib pliag. Kawg hloov kho: 2023-12-15 23:12
Thaj tsam yog ntsuas hauv 'square' units. Lub cheeb tsam ntawm daim duab yog tus naj npawb ntawm cov squares yuav tsum tau npog nws tag nrho, zoo li cov vuas rau hauv pem teb. Thaj tsam ntawm ib square = sab sij hawm sab. Txij li txhua sab ntawm ib lub square yog tib yam, nws tuaj yeem tsuas yog qhov ntev ntawm ib sab squared. Kawg hloov kho: 2023-12-15 23:12
Sodium. Sodium yog qhov tseem ceeb cation ntawm cov kua dej extracellular. Potassium. Potassium yog qhov tseem ceeb ntawm cation intracellular. Chloride. Chloride yog qhov tseem ceeb tshaj plaws ntawm cov cellular anion. Bicarbonate. Bicarbonate yog qhov thib ob ntau tshaj anion hauv cov ntshav. Calcium. Phosphate. Kawg hloov kho: 2024-01-18 08:01
Thermal expansion yog qhov nyiam rau cov zaub mov kom nthuav dav thiab cog lus raws li qhov kub thiab txias. Kev hloov pauv sai sai, xws li kev mus ncig nruab hnub hmo ntuj, ua rau pob zeb nthuav dav thiab cog lus. Frost shattering yog ib hom kev siv tshuab huab cua uas peb pom qhov tawg ntawm pob zeb vim qhov nthuav dav ntawm cov dej khov. Kawg hloov kho: 2023-12-15 23:12
Einstein's genius, Galaburda hais tias, yog tej zaum yog vim 'ib co ua ke ntawm lub hlwb tshwj xeeb thiab ib puag ncig nws nyob.' Thiab nws qhia tias tam sim no cov kws tshawb fawb sim los sib piv Einstein lub hlwb nrog lwm tus kws tshaj lij physicists kom pom tias lub hlwb cov yam ntxwv tshwj xeeb rau Einstein nws tus kheej lossis tseem pom hauv. Kawg hloov kho: 2023-12-15 23:12
Alpha, Beta, Gamma Composition Alpha hais muaj qhov zoo, beta hais muaj qhov tsis zoo, thiab gamma rays yog nruab nrab. Alpha hais muaj ntau dua li beta hais. Kawg hloov kho: 2023-12-15 23:12
Ib qho av qeeg 6.4 magnitude tsoo rau yav qab teb California tag kis no. Peb tab tom sau peb qhov kev pabcuam nyob, tab sis ntawm no yog qhov peb paub txog qhov av qeeg: Qhov twg nws tsoo: Av qeeg nyob ze Ridgecrest, California, ib lub zej zog sab hnub poob ntawm Mojave Desert thiab txog 150 mais sab qaum teb ntawm Los Angeles. Kawg hloov kho: 2023-12-15 23:12
Puas yog nceb unicellular lossis multicellular? Cov poov xab sib txawv yog cov piv txwv ntawm cov kab mob uas yog unicellular thaum cov tsiaj tsim cov nceb classic (anumbrella-shaped cap [los yog pileus] zaum saum lub qia [lossis ntau dua "stipe"] yog cov piv txwv ntawm ntau cov kab mob. Kawg hloov kho: 2023-12-15 23:12
Saib ze ze: Cov neeg nqa khoom yooj yim Diffusion Muaj ob hom kev sib koom ua ke ntawm cov neeg nqa khoom yooj yim: Channel proteins thauj tsuas yog dej lossis qee yam ions. Lawv ua li ntawd los ntawm kev tsim cov protein-lined passageway hla daim nyias nyias. Ntau cov dej molecules lossis ions tuaj yeem hla hauv ib cov ntaub ntawv los ntawm cov channel ntawm tus nqi nrawm heev. Kawg hloov kho: 2023-12-15 23:12
Muaj peb hom sediment, thiab yog li ntawd, sedimentary pob zeb: clastic, biogenic, thiab tshuaj, thiab peb sib txawv ntawm peb raws li cov fragments uas tuaj ua ke los tsim lawv. Cia peb saib thawj hom hais, uas yog clastic. Clastic sediments yog tsim los ntawm cov pob zeb tawg. Kawg hloov kho: 2023-12-15 23:12
Ib cheeb tsam seismic yog thaj chaw ntawm lub ntiaj teb qhov chaw uas cov seismographs tsuas tuaj yeem ntes tau av qeeg tom qab nws cov nthwv dej seismic tau dhau los ntawm lub ntiaj teb. Thaum av qeeg tshwm sim, seismic nthwv dej radiate tawm spherically los ntawm av qeeg qhov tsom. Kawg hloov kho: 2023-12-15 23:12
Qhov no yog qhov xwm txheej vim tias quadratum yog lo lus Latin rau square, thiab txij li thaj tsam ntawm ib lub square ntawm sab ntev x yog muab los ntawm x2, ib qho kev sib npaug polynomial uas muaj tus lej ob yog hu ua quadratic ('square-like'). Los ntawm kev txuas ntxiv, lub ntsej muag plaub yog qhov thib ob-txiav txim siab algebraic nto. Kawg hloov kho: 2023-12-15 23:12
Nyob rau hauv cov ntaub ntawv no, vim hais tias ob nqe lus yog tib yam degree, qhov txwv yog sib npaug zos rau 0 (thiab ib tug ceev glance ntawm daim duab ntawm y = sqrt(x-1) - sqrt(x) paub meej tias raws li x mus infinity, y mus kom ze 0). Kawg hloov kho: 2023-12-15 23:12
Faib cov nthwv dej ceev los ntawm nws cov zaus, ntsuas hauv Hertz. Piv txwv li, yog tias yoj oscillates ntawm 800 THz, los yog 8 x 10^14Hz, faib 225,563,910 los ntawm 8 x 10^14 kom tau 2.82 x 10^-7 meters.Multiply yoj lub wavelength los ntawm ib billion, uas yog ces tus naj npawb ntawm nanometers nyob rau hauv ib meter. Kawg hloov kho: 2023-12-15 23:12
Acer negundo - boxelder maple. Acer saccharinum - nyiaj maple. Acer glabrum - Rocky Mountain maple. Asimina triloba - pawpaw. Amelanchier arborea - shadblow serviceberry (Lub rau hli ntuj) Crataegus succulenta - succulent hawthorn. Acer nigrum - dub maple. Amelanchier alnifolia - Saskatoon serviceberry. 135. Kawg hloov kho: 2023-12-15 23:12
Hauv lwm lo lus, qhov hnyav ntawm Lub Hnub yog 330,000 npaug 5,973,600,000,000,000,000,000 tonnes. Thesun muaj ib pawg ntawm 2,000,000,000,000,000,000,000,000,000 (2octillion) tonnes uas sawv cev rau 99.9% ntawm lub hnub ci system tag nrho. Kawg hloov kho: 2023-12-15 23:12
Qhov zoo tshaj plaws-paub thiab nrov tshaj plaws txhais ntawm Blue Moon yog hais tias nws piav txog lub hli thib ob ntawm ib lub hli. Los ntawm cov ntsiab lus no, muaj lub hli xiav rau Lub Xya Hli 31, 2015, Lub Ib Hlis 31, 2018, thiab Lub Peb Hlis 31, 2018. Lub sijhawm tom ntej yuav yog Lub Kaum Hli 31, 2020. Kawg hloov kho: 2023-12-15 23:12
Muab xam los ntawm kev faib tag nrho suav los ntawm tag nrho IRT lossis tag nrho lub sijhawm thaum cov lus teb tshwm sim (piv txwv li, 20 cov lus teb hauv 4 feeb sib npaug 5 lus teb ib feeb). Kuj hu ua zaus. Kawg hloov kho: 2023-12-15 23:12
Lub npe 'Konocti' yog muab los ntawm Pomo 'kno', roob, thiab 'htai', poj niam. Kawg hloov kho: 2023-12-15 23:12
Primary Radiation Primary Beam: Qhov no yog hais txog lub x-ray beam ua ntej muaj kev cuam tshuam nrog tus neeg mob, kab sib chaws, lub rooj lossis duab intensifier. Exit Beam: Lub nqaj uas cuam tshuam nrog tus ntes yog hu ua lub nqaj tawm thiab yuav tau txais kev txo qis. Kawg hloov kho: 2023-12-15 23:12