Ua kom pom tseeb ntawm cov piv txwv uas hloov pauv lossis hloov pauv yog lossis yog pawg alkyl, halogen, lossis ob qho tib si. Cycloalkanes yog cyclic hydrocarbons, txhais tau hais tias cov pa roj carbon monoxide yog teem rau hauv daim ntawv ntawm lub nplhaib. IUPAC Cov Cai rau Nomenclature. Cycloalkane Cycloalkyl cyclodecane yog cyclodecanyl
Ceramic square: Siv kom tsis txhob hlawv qhov chaw ntawm koj lub chaw kuaj sim thiab ua rau koj tus kws qhia ntawv chemistry npau taws. Clamps: Siv los tuav ntau yam khoom nyob rau hauv qhov chaw, tshwj xeeb tshaj yog cov kav raj. Av nplaum daim duab peb sab: Siv los tuav lub crucible thaum nws tau rhuab
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Lub ntsiab lus ntawm TREE TREE txhais tau tias 'Marijuana' Yog li tam sim no koj paub - TREE txhais tau tias 'Marijuana' - tsis txhob ua tsaug rau peb. YW! TREE txhais li cas? TREE yog ib qho acronym, abbreviation los yog slang lo lus uas tau piav saum toj no qhov twg TREE txhais tau muab
Los ntawm sab saum toj mus rau hauv qab ib pawg, electronegativity txo. Qhov no yog vim tus naj npawb atomic nce ib pawg, thiab yog li muaj kev ncua deb ntawm valence electrons thiab nucleus, los yog ntau dua atomic radius
Cov poov xab yuav loj hlob ntawm cov kab mob bacteriological (cov ntshav yaj agar thiab chocolate agar). Kev txheeb xyuas qhov tseeb ntawm Candida albicans tuaj yeem ua tau los ntawm kev soj ntsuam pasty, daj-dawb thaj chaw uas 'ko taw' nthuav tawm ntawm cov npoo mus rau hauv ib puag ncig agar. C. albicans tuaj yeem pom hauv Duab A
Multicellular. Ib yam dab tsi uas yog multicellular yog ib yam kab mob complex, ua los ntawm ntau lub hlwb. Thaum cov kab mob ib leeg tsis tuaj yeem pom feem ntau yam tsis muaj lub tshuab ntsuas, koj tuaj yeem pom cov kab mob ntau yam nrog lub qhov muag liab qab
Electromagnetic nthwv dej yog tsim thaum lub zog hluav taws xob vibrates lossis nrawm. Electromagnetic tsis sib txawv nyob rau hauv wavelength thiab zaus. 4) Piav seb lub teeb coj li cas zoo li cov kwj ntawm cov khoom. Electromagnetic hluav taws xob coj tus cwj pwm qee zaum zoo li nthwv dej thiab qee zaum zoo li cov kwj ntawm cov khoom
Yog hais tias lub particle mus ntawm qhov tsis tu ncua ntawm ib chav tsev ib ob, peb hais tias qhov nkhaus yog parameterized los ntawm arc ntev. Peb tau pom lub tswv yim no ua ntej hauv lub ntsiab lus ntawm radians. Nyob rau hauv ib lub voj voog ib lub radian yog ib chav tsev ntawm arc ntev nyob ib ncig ntawm lub voj voog
Tus nqi ntawm mu naught(µ0) lossis tus nqi ntawm qhov permeability ntawm qhov chaw dawb yog raws nraim kom txog rau thaum 20th May 2019. mu naught tus nqi: µ0 = 4pi × 10-7 H / m. kwv yees li µ0 = 12.57 × 10-7 H / m
Siv txoj cai empirical (lossis 68-95-99.7 txoj cai) los kwv yees qhov tshwm sim rau kev faib khoom ib txwm. Tsim los ntawm Sal Khan
SI unit: kilogram meter/second kgm/s
Tus qauv sib txawv, tseem hu ua lub hauv paus txhais tau tias square deviation, yog ib qho kev ntsuas ntawm qhov sib txawv rau qhov nruab nrab qhov deb uas cov qhab nias deviate los ntawm lawv txhais tau tias. Nws yog xam los ntawm kev noj lub hauv paus square ntawm qhov sib txawv. Tus qauv sib txawv ib txwm zoo: SD> 0. Tus qauv sib txawv yog qhov ntsuas qhov sib txawv
Lub postulate yog ib nqe lus uas tau txais yam tsis muaj pov thawj. Axiom yog lwm lub npe rau postulate. Piv txwv li, yog tias koj paub tias Pam yog tsib feet siab thiab tag nrho nws cov nus muag siab dua nws, koj yuav ntseeg nws yog tias nws hais tias tag nrho nws cov nus muag tsawg kawg yog tsib taw ib
Qhov txawv tseem ceeb: Nebula yog huab cua hauv qhov chaw sib sib zog nqus uas muaj roj lossis av / plua plav (xws li huab tsim tom qab lub hnub qub tawg). Ua ntej qhov kawg ua ntu zus, lub hnub qub muaj huab cua ntau ntawm hydrogen, helium thiab hmoov av, uas yog hu ua protostar. Nebula tsim ib tug protostar. Protostar yog qhov ntxov tshaj plaws ntawm lub hnub qub
Concentration hauv Biology: Biomedical Sciences. Qhov kev xav no npaj cov tub ntxhais kawm rau kev kawm ntxiv hauv feem ntau Cov Kev Pabcuam Kev Noj Qab Haus Huv (tshuaj kho mob, kho hniav, kws kho tsiaj, thiab lwm yam), cov kev pabcuam kev noj qab haus huv (tus kws kho mob, kws saib xyuas neeg mob, kho lub cev, kho haujlwm, thiab lwm yam)
Mol/m3 = 10−3 mol/dm3 = 10−3 mol/L = 10−3 M = 1 mmol/L = 1 mM. Cov lus qhia millimolar thiab micromolar xa mus rau mM thiab ΜM (10− 3 mol / L thiab 10− 6 mol / L), feem
Function Of Cell Organelles A B cell membrane tswj kev txav mus rau hauv thiab tawm ntawm lub cell cytoplasm watery khoom uas muaj ntau cov ntaub ntawv koom nrog hauv cell metabolism endoplasmic reticulum ua txoj hauv kev rau kev thauj khoom thoob plaws hauv lub cell
Txoj kev tshawb xav ntawm kev hloov pauv los ntawm kev xaiv ntuj tsim tau tsim los ntawm Charles Darwin thiab Alfred Russel Wallace nyob rau nruab nrab xyoo pua 19th thiab tau muab nthuav dav hauv Darwin phau ntawv On the Origin of Species (1859)
Tus culprit yog tej zaum ib yam kab mob los yog kab. Yog li, yog tias ib feem peb mus rau ib feem plaub ntawm cov koob ntawm sab hauv ntawm koj tsob ntoo evergreen ntog, nws tsuas yog ib qho cim ntawm kev laus. Tsuas yog rake cov koob tuag, lossis zoo dua, cia lawv nyob hauv qab tsob ntoo kom zoo mulch
Ntau precisely, qhov tshwj xeeb ntawm ib qho enzyme yog vim muaj kev cuam tshuam ntawm lub substrate nrog cov enzyme. Cov substrates yog lub luag haujlwm rau enzyme tshwj xeeb. Cov qauv molecular ntawm lub substrate txuas mus rau lub enzyme kom lub substrate tuaj yeem haum rau hauv enzyme molecule
Lub teeb lub zog yog ib hom kinetic zog nrog lub peev xwm los ua hom teeb pom kev zoo rau tib neeg lub qhov muag. Lub teeb yog txhais raws li ib daim ntawv ntawm electromagnetic hluav taws xob tawm los ntawm cov khoom kub xws li lasers, qhov muag teev, thiab lub hnub. Txawm li cas los xij, tsis muaj teeb meem yog qhov tseem ceeb los nqa lub zog mus rau kev mus ncig
Cell phab ntsa tsis muaj receptors. Lub membrane yog permeable thiab tswj kev txav ntawm cov khoom mus rau hauv thiab sab nraud ntawm tes. Ntawd yog, nws tuaj yeem tso cai rau dej thiab lwm yam khoom hla dhau los ntawm kev xaiv. Cov haujlwm muaj xws li kev tiv thaiv los ntawm ib puag ncig sab nraud
Lub deviance residual yog ntsuas ntawm deviance pab los ntawm txhua qhov kev soj ntsuam thiab muab los ntawm. qhov twg di yog tus kheej deviance contribution. Cov deviance residuals tuaj yeem siv los txheeb xyuas tus qauv haum ntawm txhua qhov kev soj ntsuam rau cov qauv linear generalized
Nrog ntau dua ib lab hom sib txawv, Animalia Kingdom suav tias yog lub nceeg vaj loj tshaj plaws. Nws cov kab mob tseem nyob hauv ntau qhov chaw nyob hauv ntiaj teb
Lub cell membrane yog ib tug multifaceted membrane uas envelopes ib lub cell lub cytoplasm. Nws tiv thaiv kev ncaj ncees ntawm tes nrog rau kev txhawb nqa ntawm tes thiab pab tswj lub cell zoo li qub. Proteins thiab lipids yog cov khoom tseem ceeb ntawm cov cell membrane
Kev ruaj ntseg ntawm Dawb radicals nce nyob rau hauv qhov kev txiav txim Methyl < Primary < Secondary < Tertiary. Dawb radicals ruaj khov los ntawm Delocalization ("Resonance") Geometry ntawm Dawb radicals yog qhov "Pyramid ntiav", uas tso cai rau sib tshooj ntawm Ib Nrab-Filled p-Orbital nrog Pi Bonds uas nyob ib sab
Macromolecules pom nyob rau hauv cov kab mob cytoplasm suav nrog thaj tsam nucleoid, ribosomes, proteins, thiab enzymes. Lub cheeb tsam nucleoid yog thaj chaw hauv lub cell uas tsev cov khoom siv caj ces. Prokaryotes tej zaum yuav muaj cov chromosomal ntxiv ntawm DNA hu ua plasmid
Evolutionary psychology yog kev kawm txog tib neeg kev coj cwj pwm txawv ntawm kev sib deev. Nws yog qhov tseeb tias evolutionary psychologists kuj kawm tib neeg mating tus cwj pwm - thiab nyob rau hauv lub cheeb tsam ntawd, nws yog qhov tseeb hais tias ib tug loj lub cev ntawm kev tshawb fawb tsom rau ib tug evolutionary account ntawm txiv neej / poj niam kev coj cwj pwm txawv
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Cov huab cua tshuaj lom neeg tshwm sim thaum dej yaj cov ntxhia hauv pob zeb, tsim cov tebchaw tshiab. Cov tshuaj tiv thaiv no hu ua hydrolysis. Hydrolysis tshwm sim, piv txwv li, thaum dej los ntawm kev sib cuag nrog granite. Feldspar crystals nyob rau hauv lub granite teb chemically, tsim av nplaum minerals
Lawv nplooj muaj tshuaj lom nyob rau hauv lawv uas lom cov av. " Thiab, thaum kawg, "Ib hav zoov Eucalyptus yog hav zoov lom." Cov lus xaiv tsis tu ncua uas muaj tshuaj nyob rau hauv nplooj ntawm Eucalyptus "tshuaj lom" cov av hauv qab nws, ua rau nws tsis xis nyob rau lwm cov nroj tsuag
Conventionally peb txhais qhov chaw pej xeem raws li nws txoj kev nom kev tswv-kev lag luam - kev ua tswv cuab thiab kev tswj hwm, kev lag luam kev lag luam, thiab kev tsim lub cev. Thaum lawv tseem ceeb, kev nom kev tswv-kev lag luam tsis nyob ntawm lawv tus kheej txaus los txiav txim siab dab tsi ua rau pej xeem qhov chaw pej xeem
Thaum lub tsheb qeeb, qhov ceev yuav txo. Qhov txo qis yog hu ua negative acceleration. Thaum lub tsheb hloov kev taw qhia, nws kuj tseem nrawm. Nyob rau hauv daim duab mus rau sab xis, sib piv cov kev taw qhia ntawm acceleration mus rau cov kev taw qhia ntawm lub ceev
Main-sequence haum yog dab tsi? Ib txoj hauv kev los ntsuas qhov kev ncua deb mus rau ib pawg ntawm cov hnub qub los ntawm kev sib piv qhov pom kev ci ntsa iab ntawm cov pawg tseem ceeb sib lawv liag nrog cov txheej txheem tseem ceeb
Recap • Lapse Rate yog tus nqi uas kub qis dua thaum qhov siab nce hauv huab cua • Ib puag ncig lapse tus nqi yog tus nqi uas kub qis dua thaum tus nqi tsis cuam tshuam los ntawm huab cua saturation • Environmental lapse rate txo sai dua thaum huab cua tsis ruaj khov. tsis ruaj khov
Saib ntau yam uas yuav tsum tau ua nyob rau hauv New Mexico » Trinity yog code rau thawj detonation ntawm "Lub Gadget", ib tug nuclear ntaus ntawv, conceptually zoo ib yam li nws cov kwv tij, "Fat Man." Tus txiv neej rog tau ua phem rau Nagasaki peb lub lis piam tom qab, tua ntawm 40,000 txog 75,000 tus neeg nyob rau hauv lub moj tej tawg tam sim ntawd
Cov kws tshawb fawb siv peb yam tseem ceeb los txheeb xyuas qhov sib xws thiab qhov sib txawv ntawm chromosomes. Peb qhov tseem ceeb no yog qhov loj me, banding qauv thiab centromere txoj hauj lwm. Kuj tseem muaj kev ua haujlwm uas tso cai rau ib tus txheeb xyuas cov chromosomes sib xws
Franklin paub zoo tshaj plaws rau nws txoj haujlwm ntawm X-ray diffraction dluab ntawm DNA, tshwj xeeb tshaj yog Diam duab 51, thaum nyob rau ntawm King's College London, uas coj mus rau qhov kev tshawb pom ntawm DNA ob helix rau James Watson, Francis Crick thiab Maurice Wilkins tau koom lub Nobel. Nqi zog hauv Physiology lossis Tshuaj hauv xyoo 1962
VIDEO Tom qab ntawd, koj yuav daws li cas rau cov teeb meem atomic loj? Rau xam tus atomic loj ntawm ib qho atom ntawm ib lub caij, ntxiv rau pawg ntawm protons thiab neutrons. Piv txwv: Nrhiav cov atomic loj ntawm ib qho isotope ntawm carbon uas muaj 7 neutrons.