Argon yog cais tawm ntawm huab cua los ntawm kev faib ua feem, feem ntau yog los ntawm cryogenic fractional distillation, txheej txheem uas kuj ua kom huv si nitrogen, oxygen, neon, krypton thiab xenon. Lub ntiaj teb crust thiab seawater muaj 1.2 ppm thiab 0.45 ppm ntawm argon, feem
Nroj tsuag yog ib qho ntawm rau pawg loj (kingdoms) of living things. Lawv yog autotrophic eukaryotes, uas txhais tau hais tias lawv muaj cov hlwb nyuaj, thiab ua rau lawv tus kheej cov zaub mov. Feem ntau lawv txav tsis tau (tsis suav kev loj hlob). Cov nroj tsuag muaj xws li cov ntoo, tshuaj ntsuab, hav txwv yeem, nyom, vines, ferns, mosses, thiab ntsuab algae
Zeolites tau dav siv los ua ion txauv txaj hauv kev ua dej hauv tsev thiab kev lag luam, muag muag, thiab lwm yam kev siv. Hauv chemistry, zeolites yog siv los cais cov molecules (tsuas yog cov molecules ntawm qee qhov ntau thiab tsawg thiab cov duab tuaj yeem dhau mus), thiab ua cov ntxiab rau cov molecules kom lawv tuaj yeem txheeb xyuas
Cov qauv ntawm Atoms. Ib lub atom muaj ib tug zoo nqi nucleus nyob ib puag ncig los ntawm ib los yog ntau tshaj qhov tsis zoo nqi hu ua electrons. Tus naj npawb ntawm cov protons pom nyob rau hauv lub nucleus sib npaug ntawm cov electrons uas nyob ib puag ncig nws, muab lub atom rau nruab nrab (neutrons muaj pes tsawg tus nqi)
Txhawm rau sprout cov noob, cog rau hauv ib lub thawv me me nrog ib txheej nyias ntawm cov av, lossis tsuas yog ib nrab-faus. Xibtes tsis yooj yim sprout yog tias lawv faus tob heev - nyob rau hauv qhov xwm txheej, xibtes noob tau tawg los ntawm cua thiab tsiaj txhu thiab tsis tshua muaj faus ua ntej lawv xav tias yuav tawg
Tus lej yog ib lub square zoo meej (los yog tus lej square) yog tias nws lub hauv paus square yog tus lej; uas yog hais, nws yog cov khoom ntawm ib tug integer nrog nws tus kheej. Ntawm no, lub hauv paus square ntawm 500 yog hais txog 22.361. Yog li, lub hauv paus square ntawm 500 tsis yog tus lej, thiab yog li 500 tsis yog tus lej square
Cov nqe lus hauv cov teeb no (16) equilateral daim duab peb sab. Ib daim duab peb sab nrog txhua sab ntawm qhov sib npaug. isosceles daim duab peb sab. Ib daim duab peb sab nrog ob sab ntawm qhov sib npaug. daim duab peb sab scalene. Ib daim duab peb sab uas tsis muaj ob sab ntawm qhov sib npaug. scalene txoj cai daim duab peb sab. isosceles txoj cai daim duab peb sab. square. duab plaub. parallelogram
Kev Kho Mob Txhais ntawm Genetics Genetics: Txoj kev tshawb fawb txog kev xeeb tub. Genetics muaj feem xyuam rau tib neeg thiab tag nrho lwm yam kab mob. Yog li, piv txwv li, muaj tib neeg caj ces, nas noob caj noob ces, txiv hmab txiv ntoo ya noob caj noob ces, thiab lwm yam. Clinical genetics - kev kuaj mob, prognosis thiab, qee zaum, kev kho mob ntawm caj ces
Lewis cov qauv (tseem hu ua Lewis dot structures lossis electron dot structures) yog cov duab kos uas sawv cev rau cov valence electrons ntawm atoms hauv ib lub molecule. Cov cim Lewis thiab cov qauv Lewis pab pom qhov valence electrons ntawm atoms thiab molecules, txawm tias lawv muaj nyob hauv ib leeg lossis hauv cov ntawv cog lus
Ib qhov chaw txheeb ze yog txoj hauj lwm ntawm ib yam dab tsi txheeb ze rau lwm qhov chaw. Piv txwv li, tej zaum koj yuav hais tias koj nyob 50 mais sab hnub poob ntawm Houston. Qhov chaw tsis meej piav qhia txog txoj haujlwm ruaj khov uas tsis hloov pauv, tsis hais koj qhov chaw nyob tam sim no. Nws raug txheeb xyuas los ntawm cov kab ke tshwj xeeb, xws li latitude thiab longitude
Tag nrho ntawm cuaj lub dav hlau tau raug tso tawm rau kev tshaj tawm txoj moo zoo uas koom nrog kev mus ntsib cov ntiaj chaw sab nraud; tag nrho cuaj txoj haujlwm koom nrog ntsib nrog Jupiter, nrog plaub lub dav hlau mus xyuas Saturn. Ib lub dav hlau, Voyager 2, kuj tau mus xyuas Uranus thiab Neptune
Sir Alec John Jeffreys
Dej yog ib qho 'polar' molecule, txhais tau hais tias muaj kev faib tsis sib xws ntawm electron ceev. Dej muaj ib feem tsis zoo nqi () nyob ze ntawm cov pa atom vim cov unshared khub ntawm electrons, thiab ib nrab nqi zoo () nyob ze hydrogen atoms
700 yam Thiab cov lus nug yog, dab tsi yog qhov txawv ntawm eucalyptus? 3 hom eucalyptus tseem ceeb roj Eucalyptus Globulus (Blue Gum Eucalyptus) Classic eucalyptus txhawb kev ua pa tob nrog nws cov hav zoov, vaporous, zoo li camphor aroma.
Cov xwm txheej no tuaj yeem muab faib ua ob qhov tseem ceeb: interphase (hauv nruab nrab ntawm kev sib faib theem ua pawg G1 theem, S theem, G2 theem), thaum lub xov tooj ntawm tes tsim thiab ua nrog nws cov haujlwm metabolic; mitotic theem (M mitosis), thaum lub sij hawm lub cell yog replicating nws tus kheej
Qhov tsis zoo / kev txwv ntawm kev hnov ntxhiab ntawm cov chaw taws teeb: Kev hnov mob nyob deb yog kim thiab tsis raug nqi rau kev sau cov ntsiab lus rau thaj tsam me. Kev sau cov ntaub ntawv rau cheeb tsam hauv cheeb tsam, kev cob qhia tshwj xeeb, khoom siv thiab kev saib xyuas yuav raug nqi rau ib cheeb tsam me me piv nrog cov cheeb tsam loj
Qee qhov G3P no yog siv los rov tsim dua RuBP kom txuas ntxiv mus, tab sis qee qhov muaj nyob rau hauv molecular synthesis thiab siv los ua fructose diphosphate. Tom qab ntawd cov fructose diphosphate yog siv los ua cov piam thaj, sucrose, starch thiab lwm yam carbohydrates
Ib qho kev xav yog kev hloov pauv uas ua rau daim iav duab ntawm ib qho khoom txheeb ze rau qhov axis ntawm kev xav. Peb tuaj yeem xaiv qhov axis ntawm qhov kev xav hauv lub dav hlau xy los yog perpendicular rau lub dav hlau xy. Shear: - Ib qho kev hloov pauv uas slants cov duab ntawm ib yam khoom hu ua shear transformation
(Original post by nelemauddin) Ib khub homologous yog ib khub ntawm chromosomes uas muaj leej niam thiab txiv chromatid koom ua ke ntawm centromere. Cov noob muaj pes tsawg leeg - txawm hais tias tej zaum yuav muaj qhov sib txawv ntawm cov noob no, Txoj Haujlwm (loci) thiab qhov loj me
Ib qho point yog qhov tseem ceeb tshaj plaws ntawm cov khoom ingeometry. Nws yog sawv cev los ntawm ib tug dot thiab npe los ntawm ib tug capitalletter. Ib lub ntsiab lus sawv cev rau txoj hauj lwm nkaus xwb; nws muaj xoom loj (uas yog, xoom ntev, xoom dav, thiab xoom qhov siab). Daim duab 1 qhia txog point C, point M, thiab pointQ
Tus Pej Xeem yog dab tsi? Ib feem ntawm cov pejxeem yog ib feem ntawm cov pejxeem uas muaj tej yam ntxwv. Piv txwv li, cia peb hais tias koj muaj 1,000 tus neeg hauv cov pejxeem thiab 237 ntawm cov neeg ntawd muaj qhov muag xiav. Ib feem ntawm cov neeg uas muaj qhov muag xiav yog 237 tawm ntawm 1,000, lossis 237/1000
Cov teebmeem zoo Cov kev ua yeeb yam zoo nkauj tsim los ntawm kev tawg ua rau cov neeg tuaj ncig tebchaws uasi, yog li, nqa nyiaj tau los rau thaj tsam ntawd. Cov lava thiab tshauv los ntawm qhov tawg tawg ua rau muaj txiaj ntsig zoo rau cov av. Cov no tsim cov av fertile heev uas zoo rau yav tom ntej cog cov zaub sib txawv lossis lwm yam nroj tsuag
Cov cim: Bernard Marx
Kab mob Hais txog qhov no, dab tsi yog thawj yam uas muaj sia nyob hauv ntiaj teb? Stromatolites, zoo li cov pom hauv ntiaj teb no Cov cuab yeej cuab tam thaj chaw ntawm Shark Bay, Western Australia, tej zaum yuav muaj cyanobacteria, uas feem ntau yuav Lub ntiaj teb thawj cov kab mob photosynthetic.
Cov khoom siv hlau nplaum yog cov khoom siv nrog lub zog sib nqus uas tuaj yeem nyiam lossis tawm tsam lwm yam ntaub ntawv, tshwj xeeb yog hlau
Pov thawj ntawm lub neej. Cov pov thawj rau lub zog tsaus yog tsis ncaj ncees lawm tab sis los ntawm peb qhov kev ywj pheej: kev ntsuas deb thiab lawv cov kev sib raug zoo rau redshift, uas qhia tias lub ntiaj teb tau nthuav dav ntau dua nyob rau hauv ib nrab ntawm nws lub neej
Lub dwarf Alberta spruce ntoo (Picea glauca Conica) yog cov nroj tsuag nrov tab sis tsis muaj teeb meem. Nws yog qhov tshwm sim rau cov tswv tsev uas tau nyiam cov nroj tsuag rau ob peb xyoos kom pom, tam sim ntawd, tias lawv tsob ntoo poob koob (feem ntau tom qab lawv tig xim av lossis daj)
Dej lub xibtes los ntawm kev tso cai rau lub vaj hose los rau ntawm lub hauv paus ntawm tsob ntoo. Tom qab thawj peb lub hlis, dej sparingly thiab tsuas yog thaum lub sij hawm kub, qhuav, raws li Mexican kiv cua ntawm xibtes yog raug rau rot. Fertilize Mexican ntxuam xibtes nyob rau hauv caij nplooj ntoos hlav, siv ib tug qeeb-tso chiv rau xibtes ntoo
Cov tshuaj tua kab uas muaj permethrin thiab carbaryl muaj txiaj ntsig zoo tshaj plaws los tua cov nyom
Ib tug supernova (/ˌsuːp?rˈno?v?/ plural: supernovae /ˌsuːp?rˈno?viː/ los yog supernovas, cov ntawv luv: SN thiab SNe) yog qhov muaj zog thiab lub hnub qub tawg tawg. Qhov kev tshwm sim astronomical no tshwm sim thaum lub sij hawm kawg evolutionary theem ntawm lub hnub qub loj heev los yog thaum ib tug dawb dwarf tau tshwm sim rau hauv khiav tawm nuclear fusion
Algebra yog ib ceg ntawm kev ua lej uas cuam tshuam nrog cov cim thiab cov cai tswj hwm cov cim. Nyob rau hauv theem pib algebra, cov cim (hnub no sau ua Latin thiab Greek cov tsiaj ntawv) sawv cev rau ntau yam tsis muaj qhov tseem ceeb, hu ua qhov sib txawv. Cov tsiaj ntawv x thiab y sawv cev rau thaj chaw ntawm thaj chaw
Tsis ntev nws dhau los ua ib tug neeg tsis sib haum xeeb; Nws raug liam los ntawm nws cov yeeb ncuab ntawm kev ntseeg kev ntseeg thiab kev tsim txom, raug liam tias ua rau muaj kev nom kev tswv tsis raug cai rau tsar, thiab txawm hais tias muaj kev cuam tshuam nrog Tsarina
FNet = F1 + F2 + F3…. Thaum lub cev so, cov mis quab yuam yog muab los ntawm, FNet = Fa + Fg
Yog hais tias lub nucleus tsis muaj nyob, lub cell yuav tsis muaj kev taw qhia thiab lub nucleolus, uas nyob rau hauv lub nucleus, yuav tsis muaj peev xwm tsim ribosomes. Yog tias lub cell membrane tau ploj mus, lub cell yuav raug tiv thaiv. Txhua yam yuav ua rau lub cell tuag. Yuav ua li cas yog tias cov cell tsis muaj organelles?
Litmus yog ib qho tsis muaj zog acidic, xim organic xim. Raws li nws qhov chaw hloov pauv ntawm cov kua qaub (pH 7), cov molecule hloov ntawm protonated acid mus rau ionized ntsev. Nws cov xim kuj hloov ntawm liab mus rau xiav. (Qhov tseeb pH ntau rau qhov kev hloov xim no yog los ntawm 4.5 txog 8.3.)
Trigonometric functions yog qee zaum hu ua ncig ua haujlwm. Qhov no yog vim hais tias ob qho tseem ceeb trigonometric functions - lub sine thiab cov cosine - yog txhais raws li lub coordinates ntawm ib tug point P mus ncig ntawm lub tsev voj voog ntawm lub vojvoog 1. Lub sine thiab cov cosine rov ua lawv cov outputs ntawm ib ntus
Teb: Plateaus hu ua 'tablelands' raws li lawv zoo li lub rooj nyob rau hauv lub siab hais tias lawv yog elevated thiab siab. Yeej, 'Plateau' yog lus Fab Kis rau tableland thiab raws li lub npe zoo li, nws yog thaj av uas tiaj tus hauv qhov xwm txheej thiab qhov siab siab saum hiav txwv
Calcium chlorate Ca (ClO3) 2 yog cov tshuaj lom neeg tsim los ntawm calcium thiab chlorate anion. Zoo li KClO3, nws yog ib qho muaj zog oxidizer thiab tuaj yeem siv rau hauv cov qauv pyrotechnic. Nws qhov hnyav molecular yog 206.98 g / mol. Nws solubility hauv dej yog 209 g / 100 ml ntawm 20 ° C
Teeb ntawm chromosome. Lo lus 'set of chromosome' yog hais txog tus lej ploidy. Lub haploid muaj ib pawg ntawm chromosome, diploid muaj ob pawg chromosomes, hexaploid muaj rau pawg chromosomes. Hauv tib neeg, txhua pawg chromosome yog tsim los ntawm 23 chromosomes (22 autosomes thiab 1 chromosome poj niam txiv neej). Pair ntawm chromosome
Lysis hais txog kev rhuav tshem ntawm tes, feem ntau los ntawm kab mob, enzymic, lossis osmotic mechanisms uas cuam tshuam nws txoj kev ncaj ncees. Cov kua dej uas muaj cov ntsiab lus ntawm lysed hlwb hu ua 'lysate'. Cell lysis yog siv los rhuav tshem cov hlwb kom tsis txhob muaj lub zog shear uas yuav ua rau lub cev tsis zoo lossis degrade cov proteins thiab DNA