Electromagnetic nthwv dej txawv ntawm cov tshuab tsis muaj zog uas lawv tsis tas yuav muaj qhov nruab nrab los nthuav tawm. Qhov no txhais tau hais tias electromagnetic nthwv dej tuaj yeem taug kev tsis yog los ntawm huab cua thiab cov khoom siv, tab sis kuj los ntawm lub tshuab nqus tsev. Qhov no ua pov thawj tias cov xov tooj cua tsis yog lub teeb
Muaj xya yam tseem ceeb uas txiav txim siab qhov cuam tshuam ntawm av qeeg: Qhov deb (raws li qhov chaw thiab qhov tob) Qhov hnyav ( ntsuas los ntawm Richter scale) Cov pej xeem ceev. Kev loj hlob (tsev zoo, kev pab nyiaj txiag, kev kho mob, infrastructure, thiab lwm yam) kev sib txuas lus
Methanol muaj qhov loj dua vapor siab nyob rau hauv chav tsev kub vim hais tias nws muaj qis molecular hnyav thaum piv nrog ethanol, uas txhais tau hais tias nws muaj zog intermolecular zog
Quantification yog qhov ua ntawm muab tus lej tus nqi rau ib qho kev ntsuas ntawm ib yam dab tsi, uas yog, suav cov quanta ntawm ib qho twg yog ntsuas. Yog li, quantification yog tshwj xeeb tshaj yog muaj txiaj ntsig zoo hauv kev piav qhia thiab tshuaj xyuas kev sib raug zoo tshwm sim ntawm qhov loj dua
Kev xaiv ntuj yog qhov sib txawv ntawm kev ciaj sia thiab kev yug me nyuam ntawm tib neeg vim qhov sib txawv ntawm phenotype. Nws yog ib qho tseem ceeb mechanism ntawm evolution, kev hloov nyob rau hauv cov cuab yeej cuab tam yam ntxwv ntawm ib tug pej xeem ntau tiam
Muab txhua qhov hnyav los ntawm caj npab-qhov kev ncua deb ntawm qhov siv datum-kom pom lub sijhawm. Ntxiv tag nrho cov luj kom pom qhov hnyav tag nrho. Ntxiv tag nrho cov sijhawm mus nrhiav lub sijhawm tag nrho. Faib tag nrho lub sijhawm los ntawm qhov hnyav tag nrho kom pom qhov nruab nrab ntawm lub ntiajteb txawj nqus
Guanine. = Español. Guanine (G) yog ib qho ntawm plaub lub hauv paus hauv DNA, nrog rau lwm qhov peb yog adenine (A), cytosine (C), thiab thymine (T). Nyob rau hauv DNA molecule, guanine bases nyob rau ntawm ib tug strand tsim tshuaj bonds nrog cytosine bases nyob rau hauv opposite strand
Hauv kev xaus, North Atlantic dej hiav txwv kis tau qeeb tshaj plaws thiab Pacific Dej hiav txwv Pacific kis ceev tshaj plaws
Nyob nruab nrab ntawm 1988 thiab 2010 cov tib neeg genome sequencing tej yaam num, koom nrog kev tshawb fawb thiab kev lag luam kev ua si - ncaj qha thiab tsis ncaj ncees - tsim ib tug economic (tso tawm) cuam tshuam ntawm $ 796 billion, tus kheej cov nyiaj tau los tshaj $244 billion, thiab 3.8 lab txoj hauj lwm-xyoo ntawm kev ua hauj lwm
Ua ntej, feem ntau wine fwj muaj tus qauv hauv caj dab loj. Qhov ntawd yog 3/4 '. Yog li zoo nkauj npaum li cas cork koj tau txais yuav yog 3/4 'dav. Ntawm qhov tod tes, corks nyob nruab nrab ntawm 1 1/2' mus rau 2' ntev lossis ntau dua
Yuav ua li cas tus nqi thiab qhov loj ntawm ib tug neutron piv rau tus nqi thiab loj ntawm ib tug proton? Lawv cov huab hwm coj yuav luag sib npaug, tab sis cov protons muaj cov nqi zoo thiab cov neutrons muaj cov nqi nruab nrab. Yog tias koj poob ib qho hluav taws xob ces koj tseem tshuav tus nqi zoo dua li tus nqi tsis zoo
Lub National Weather Service tau lees paub hnub Monday tias tsawg kawg yog plaub rau cua daj cua dub ntaus San Antonio. Ntawm ib qho chaw hnub Sunday tsaus ntuj, 46,000 cov neeg siv khoom tsis muaj zog hauv San Antonio cheeb tsam. Thunderstorms thiab nag los nag rattled sab hnub tuaj Texas thiab yav qab teb Louisiana thoob plaws hnub thiab rau hnub Monday tsaus ntuj
Kev hais lus, alpha thiab beta decay yog ob hom nuclear fission. Fission yog qhov tawg ntawm lub atom lub nucleus rau hauv me me. Qhov no tsim ib lub caij uas yog ob lub protons me dua li niam txiv atom. Beta lwj yog qhov tawg ntawm lub nucleus los tsim ib qho beta particle (siab zog electron)
Cov khoom siv tshuaj: HOCl yog cov muaj zog oxidizer thiab tuaj yeem tsim cov khoom tawg. Hauv cov tshuaj aqueous, ua ib qho tsis muaj zog acid, nws ib nrab dissociates rau hauv hypochlorite ion (OCl-) thiab H +. HOCl reacts withbases los tsim cov ntsev hu ua hypochlorites
Txoj cai quotient tuaj yeem pom raws li kev siv ntawm cov khoom thiab cov kev cai saw hlau. Yog Q(x) = f(x)/g(x), ces Q(x) = f(x) * 1/(g(x)). Koj tuaj yeem siv txoj cai khoom kom sib txawv Q(x), thiab 1/(g(x)) tuaj yeem sib txawv siv txoj cai saw nrog u = g(x), thiab 1/(g(x)) = 1/u
Cov feem pua ntawm txhuas acetate yog raws li nram no: Carbon ntawm 35.31 feem pua. Hydrogen ntawm 4.44 feem pua. Aluminium ntawm 13.22 feem pua
Golgi Hais txog qhov no, dab tsi organelle yog lub luag haujlwm rau kev thauj mus los? endoplasmic reticulum (ER Qhov thib ob, cov proteins txav mus los ntawm lub cell li cas? Cov proteins txav mus los endomembrane system thiab raug xa tawm los ntawm lub ntsej muag trans ntawm Golgi apparatus nyob rau hauv thauj vesicles uas txav mus los cytoplasm thiab tom qab ntawd fuse nrog plasma membrane tso tawm protein ntau mus rau sab nraum lub cell .
Lub shunt regulator los yog shunt voltage regulator yog ib daim ntawv ntawm voltage regulator qhov twg lub regulating caij shunts tam sim no rau hauv av. Lub shunt regulator ua haujlwm los ntawm kev tswj xyuas qhov hluav taws xob tas li thoob plaws nws cov terminals thiab nws yuav siv cov khoom seem tam sim no kom tswj tau qhov hluav taws xob thoob plaws lub load
Kev sib xyaw ua ke ntawm ob lub khib nyiab, tsis muaj melting lawv ua ke, feem ntau ua rau muaj kev sib xyaw ua ke.Piv txwv li cov xuab zeb thiab qab zib, ntsev thiab gravel, cov khoom ntim khoom, thiab lub thawv khoom ua si uas muaj cov khoom ua si. Mixturesin ob lossis ntau theem yog heterogeneousmixtures
Tshem tawm (ib tug ko taw) zaum thiab so ib tug ko taw; so kom txaus. (Feem ntau hais raws li ib qho kev tawm tswv yim.)
Ribosomal RNA (rRNA) koom nrog cov txheej txheem ntawm cov protein los tsim ribosomes. Cov txheej txheem nyuaj no, uas lub cev txav mus raws ib qho mRNA molecule, catalyze lub sib dhos ntawm cov amino acids rau hauv cov protein chains. Lawv kuj khi tRNAs thiab ntau yam khoom siv molecules tsim nyog rau kev tsim cov protein
Thaum Lub Yim Hli 31, 1821, tus kws kho mob German thiab tus kws kho mob German Hermann von Helmholtz yug. Hauv physiology thiab kev puas siab puas ntsws, nws paub txog nws txoj kev ua lej ntawm lub qhov muag, kev xav ntawm lub zeem muag, cov tswv yim ntawm kev pom kev pom ntawm qhov chaw, kev tshawb fawb xim pom kev, thiab ntawm kev hnov lus ntawm lub suab, kev nkag siab ntawm lub suab, thiab empiricism
Ib txoj kev tshawb fawb zoo li qhov tseeb ntau dua li qhov kev kwv yees vim nws tau txais txiaj ntsig zoo. Muaj ntau qhov kev paub zoo hauv biology, nrog rau kev xav ntawm evolution, cell theory, thiab germ theory
Dab tsi 'tshuaj' Darwin hauv Essay ntawm Txoj Cai ntawm Cov Pej Xeem (1798) yog Malthus qhov kev soj ntsuam tias nyob rau hauv cov nroj tsuag thiab tsiaj txhu tsim tau cov xeeb ntxwv ntau dua li muaj sia nyob, thiab tus txiv neej ib yam nkaus muaj peev xwm ua tau ntau tshaj yog tias tsis tau txheeb xyuas
Lub San Andreas Fault yog qhov swb ciam teb ntawm Pacific Phaj thiab North American Phaj. Nws hla California hauv ob ntawm Cape Mendocino mus rau Mev ciam teb. San Diego, Los Angeles thiab Big Sur yog nyob ntawm Pacific Phaj. San Francisco, Sacramento thiab Sierra Nevada yog nyob rau North American Phaj
Qhov tseeb, yoj lub zog yog ncaj qha proportional rau nws amplitude squared vim W ∝ Fx = kx2. Lub ntsiab lus ntawm kev siv zog siv tau rau txhua lub zog hauv kev thauj mus los, suav nrog cov uas nqa los ntawm nthwv dej. SI unit rau kev siv yog watts ib square meter (W / m2)
Tam sim ntawd yuav siv dab tsi yog tias koj cov khaub ncaws raug hluav taws lossis yog tias muaj tshuaj lom ntau tshwm sim ntawm koj cov khaub ncaws? Koj mus ncaj qha rau da dej kev nyab xeeb thiab sawb ntawm tag nrho koj cov khaub ncaws
Plasma yog nyob hauv txhua tus. Plasma tsim txog li 55% ntawm tag nrho cov ntshav ntim thiab yog tsim los ntawm cov dej feem ntau (90% los ntawm ntim) ntxiv rau cov protein yaj, qabzib, cotting yam, mineral ions, cov tshuaj hormones thiab carbon dioxide
Cov dej hiav txwv Pacific Plate subducts nyob rau hauv North American Phaj (tsim los ntawm ob sab av loj thiab dej hiav txwv) ua rau Aleutian Trench. Dej hiav txwv Pacific phaj subducts hauv qab lub teb chaws Okhotsk Phaj ntawm Nyiv Trench
Teb thiab piav qhia: Tus nqi pes tsawg ntawm tan (30 °) yog √ (3) / 3. Yog tias peb ntsaws tan (30 °) hauv lub tshuab xam zauv, peb yuav tau txais tus lej sib npaug nrog tus nqi kwv yees
Khaws zaub mov kub lossis txias rau 6 teev. (Yog tias koj ntim cov thermos thaum 7 teev sawv ntxov, qhov ntawd yog 5 teev txog thaum tav su.) Haum rau cov menyuam yaus me me
Cov piv txwv classic suav nrog cov tsiaj nyeg-nyiam, tus tswv tsev-tus kab mob, thiab lwm yam kev sib tw ntawm cov tsiaj. Ib qho piv txwv yog coevolution ntawm flowering nroj tsuag thiab txuam pollinators (piv txwv li, muv, noog, thiab lwm yam kab)
Yuav luag tag nrho cov argon nyob rau hauv lub ntiaj teb huab cua yog radiogenic argon-40, muab tau los ntawm kev lwj ntawm poov tshuaj-40 nyob rau hauv lub ntiaj teb crust. Nyob rau hauv lub ntiaj teb no, argon-36 yog nyob deb ntawm cov feem ntau argon isotope, raws li nws yog qhov yooj yim tshaj plaws tsim los ntawm stellar nucleosynthesis nyob rau hauv supernovas
Muaj 4 thaj chaw huab cua loj: thaj chaw sov ntawm 0 ° - 23.5 ° (nruab nrab ntawm tropics) Subtropics ntawm 23.5 ° - 40 ° Temperate zone los ntawm 40 ° - 60 ° Txias thaj tsam ntawm 60 ° - 90 °
VIDEO Ib yam li ntawd, nws raug nug, dab tsi yog qhov kev cuam tshuam ion ntawm solubility? Common Ion nyhuv ntawm Solubility Ntxiv ib siv ion txo solubility , raws li cov tshuaj tiv thaiv hloov mus rau sab laug kom txo tau qhov kev ntxhov siab ntawm cov khoom tshaj.
Kev kuaj Ames yog ib txoj hauv kev uas siv cov kab mob los kuaj seb cov tshuaj twg tuaj yeem ua rau muaj kev hloov pauv hauv DNA ntawm cov kab mob kuaj. Nws yog ib qho kev sim tshuaj lom neeg uas yog siv los soj ntsuam cov peev xwm mutagenic ntawm cov tshuaj sib txuas
Cov ntsiab lus ntawm Marine West Coast Qhov kev nyab xeeb ntawm cov yam ntxwv tseem ceeb yog lub caij ntuj sov me me thiab lub caij ntuj no thiab cov nag lossis daus txhua xyoo. Qhov ecosystem no muaj kev cuam tshuam loj heev los ntawm nws qhov ze rau ntawm ntug dej hiav txwv thiab roob. Nws yog qee zaum hu ua huab cua sab hnub poob ntug dej hiav txwv lossis dej hiav txwv huab cua
Yog vim li cas rau cov lus teb kom raug: Tus lej chromosome tam sim no nyob rau hauv lub hlwb haploid ntawm aub yuav yog 39 vim tias thaum lub sij hawm meiosis kuv txheej txheem, cov khub homologous sib cais. Yog li, 78 chromosomes tam sim no nyob rau hauv cov hlwb diploid yuav sib sau ua ke ntawm qhov sib npaug ntawm lub cell
Hauv kev ua lej, ib qho kev qhia txog algebraic yog ib qho kev qhia uas tsim los ntawm cov lej tsis tu ncua, qhov sib txawv, thiab cov haujlwm algebraic (ntxiv, rho tawm, sib npaug, faib thiab exponentiation los ntawm tus exponent uas yog tus lej lej). Piv txwv li, 3x2 − 2xy + c yog ib qho kev qhia algebraic
Cov kua qaub tsis muaj zog yog cov kua qaub uas tsis tsim ntau cov hydrogen ions thaum nyob hauv cov kua dej. Cov kua qaub tsis muaj zog muaj qhov pH qis thiab siv los ua kom tsis muaj zog hauv paus. Piv txwv ntawm cov acids tsis muaj zog muaj xws li: acetic acid (vinegar), lactic acid, citric acid, thiab phosphoric acid