Feem ntau, ib qho kev qhia yog nyob rau hauv daim ntawv uas yooj yim tshaj thaum nws yog ib qho yooj yim mus use. Piv txwv li, qhov no: 5x + x − 3. Yog yooj yim li: 6x & rho tawm; 3. Txoj hauv kev yooj yim los pab koj ua kom yooj yim: • Muab Cov Lus Cog Tseg Zoo
Lub caloric txoj kev xav tau khaws cia tias cov cua sov tsis tuaj yeem tsim los yog rhuav tshem, qhov kev txuag ntawm lub zog ua rau lub hauv paus ntsiab lus tsis sib xws uas cov cua sov thiab cov tshuab ua haujlwm sib hloov tau
Qhov no ib txwm tshwm sim thaum cov tshuaj tiv thaiv nce mus txog qhov sib npaug. Tsis yog, nws tsis muaj teeb meem los ntawm qhov kev taw qhia qhov chaw sib npaug mus txog. Ob qhov kev sim yuav muab tib txoj haujlwm sib npaug vim tias ob qho kev sim pib nrog stoichiometric cov nyiaj reactants lossis cov khoom lag luam
Hauv qhov piv txwv, ib lub molecule ntawm HCl tsim ib hydrogen ion. Muab cov kua qaub ntau ntau los ntawm tus naj npawb ntawm hydrogen ions tsim los suav cov concentration [H +]. Piv txwv li, yog tias qhov concentration ntawm HCL hauv cov tshuaj yog 0.02 molar, ces qhov concentration ntawm hydrogen ions yog 0.02 x 1 = 0.02 molar
Kev loj hlob ntawm cov pej xeem Exponential: Thaum cov peev txheej tsis txwv, cov pej xeem nthuav tawm kev loj hlob exponential, ua rau J-shaped nkhaus. Thaum cov peev txheej muaj tsawg, cov pej xeem nthuav tawm kev loj hlob logistic. Hauv kev loj hlob logistic, cov pej xeem nthuav dav zuj zus vim muaj peev txheej tsawg
Xaiv ib qho sib txawv ntawm ob qhov sib npaug, hais qhov sib npaug (2) thiab (3), thiab tshem tawm qhov sib txawv. Kev daws qhov system tsim los ntawm kev sib npaug (4) thiab (5). Tam sim no, hloov z = 3 rau hauv kab zauv (4) kom pom y. Siv cov lus teb los ntawm Kauj Ruam 4 thiab hloov mus rau hauv ib qho kev sib npaug uas muaj qhov sib txawv ntxiv
Qhov sib piv phenotypic yog 9: 3: 3: 1 whereas qhov genotypic piv yog 1: 2: 1: 2: 4: 2: 1: 2: 1
Nws yog vim catenation uas carbon tsim ib tug loj tus naj npawb ntawm cov tebchaw. Cov pa roj carbon muaj plaub electrons hauv nws lub plhaub valence. Carbon, siv plaub valence electrons, muaj peev xwm tsim ntau daim ntawv cog lus xws li ob npaug thiab triple. Qhov no kuj yog vim li cas rau lub hav zoov ntawm cov pa roj carbon ntau
Lub cytoskeleton ib zaug xav tias yog ib qho tshwj xeeb ntawm eukaryotic hlwb, tab sis homologues rau tag nrho cov proteins loj ntawm eukaryotic cytoskeleton tau pom nyob rau hauv prokaryotes. Txawm li cas los xij, qee cov qauv hauv cov kab mob cytoskeleton tej zaum yuav tsis tau txheeb xyuas txog tam sim no
Txhawm rau kom nkag siab txog lub roob hluav taws tus cwj pwm, kev saib xyuas yuav tsum suav nrog ntau hom kev soj ntsuam (xws li av qeeg, hauv av txav, volcanic gas, pob zeb chemistry, dej chemistry, tej thaj chaw deb satellite tsom xam) nyob rau hauv tas li los yog ze-lub sij hawm
Cardinal tooj, hu ua "suav lej," qhia kom muaj nuj nqis. Ordinal lej qhia qhov kev txiav txim lossis qib ntawm cov khoom hauv ib pawg (piv txwv li, thib rau hauv kab; plaub qhov chaw). Nominal naj npawb npe lossis txheeb xyuas ib yam dab tsi (piv txwv li, tus lej zip lossis tus neeg ua si hauv pab pawg.) Lawv tsis qhia ntau qib
Luam ntawv. [ĭm'prĭn'tĭng] Txoj kev kawm sai sai uas tus menyuam yug los lossis tus tsiaj hluas heev tsim tus cwj pwm ntawm kev lees paub thiab kev nyiam rau lwm tus tsiaj ntawm nws tus kheej, nrog rau cov tib neeg ntawm nws hom, xws li nws niam nws txiv, los yog hloov rau cov no
Huab cua qhov ntsuas qhov ntsuas siab yog li 1.0003, thaum dej yog li 1.3. Qhov no txhais tau hais tias lub teeb yog "qeeb" hauv dej dua li huab cua. Qhov no yog vim hais tias nws muaj feem yuav ntaus ib tug molecule thiab tom qab ntawd tau re-emitted, lengthening lub sij hawm lub teeb yuav siv sij hawm kom tau los ntawm ib tug tej yam deb ntawm nruab nrab
Cov rog no tuaj yeem muab faib ua 2 hom: Intramolecular rog: Intramolecular quab yuam ntawm attraction yog lub zog ntawm attraction uas khaws ib lub molecule ua ke. Intermolecular rog: Intermolecular rog yog lub zog ntawm kev nyiam lossis kev tawm tsam uas ua haujlwm ntawm cov khoom nyob sib ze (atoms, molecules lossis ions)
Ltalis, Fabkis, Spain, Is Nrias teb thiab Brazil yog cov teb chaws uas tau txais twisters, feem ntau nyob rau hauv ib xyoos. Argentina, Uruguay, Australia, Nyiv, Tuam Tshoj, Russia, Ukraine, Poland thiab lub teb chaws Yelemees tuaj yeem muab ntxiv rau cov npe ntawm lub tebchaws uas tau tshaj tawm cua daj cua dub
Kev taw qhia hauv chemistry txhais tau hais tias thaum lub sijhawm tshuaj tiv thaiv kev sib tsoo ntawm cov atoms. Cov reactant molecules yuav tsum sib tsoo nrog kev pom zoo. Txoj kev taw qhia tseeb yog qhov uas ua kom muaj kev sib cuag ncaj qha ntawm lub atom koom nrog hauv kev sib tsoo thiab kev sib koom ua ke
Cov kab mob caj ces lossis kev tsis sib haum xeeb yog qhov tshwm sim ntawm kev hloov pauv, lossis kev hloov pauv, hauv ib tus neeg DNA. Qee cov kab mob caj ces hu ua Mendelian mob-lawv yog tshwm sim los ntawm kev hloov pauv uas tshwm sim hauv DNA sib lawv liag ntawm tib lub noob. Cov no feem ntau yog cov kab mob tsawg; Qee qhov piv txwv yog Huntington tus kab mob thiab cystic fibrosis
Manganese, ntawm qhov tod tes, muaj ib qho kev teeb tsa hluav taws xob ntawm 1s22s22p63s23p64s23d5 thiab lub teeb tsa tsis zoo ntawm [Ar]4s23d5, uas ua rau ib qho hluav taws xob tsis sib xws hauv txhua 3d sub-orbital
Hom Electronic Geometry Molecular Geometry 4 Cheeb Tsam AB4 tetrahedral tetrahedral AB3E tetrahedral trigonal pyramidal AB2E2 tetrahedral khoov 109.5o
Universal qhov taw qhia pH ntau yam piav qhia Xim 3–6 Tsis muaj zog acid Txiv kab ntxwv lossis daj 7 Nruab nrab Ntsuab 8–11 Tsis muaj alkali Xiav> 11 Muaj zog alkali violet lossis Indigo
PCR stands rau Polymerase Chain Reaction, thiab luv luv, nws luam DNA ntau lab zaus sai heev. Nws yog siv nyob rau hauv DNA sequencing vim hais tias qee zaum cov qauv DNA me dhau. Qhov no tshwm sim, piv txwv li, hauv kev ua txhaum cai pov thawj, lossis hauv cov qauv qub (xws li mummies)
Txhawm rau ntxuav lub commutator, siv lub commutator tu txhuam (fiberglass) thiab qee lub tshuab fais fab. Tsis txhob siv daim ntawv emery vim nws muaj cov khoom hlau hauv nws uas yog rub tawm tuaj yeem ua rau hluav taws xob luv. Tshem tawm cov txhuam hniav, xaub cov txhuam hniav hla lub commutator hood thiab tshuaj tsuag
Kev hloov pauv: txoj cai syntactic uas tuaj yeem txav ib qho ntawm ib txoj haujlwm mus rau lwm qhov. Nyob rau hauv rooj plaub ntawm YOG-NO cov lus nug txog kev hloov pauv txoj cai uas siv tau yog hu ua INVERSION
Kauj Ruam 1: Anchor Boxes. Thauj tog rau nkoj hlau rau phab ntsa nrog screws. Kauj Ruam 2: Ntsuas Conduit. Thaum cov thawv tau teeb tsa, ntsuas cov kav dej rau kev txiav. Kauj Ruam 3: Txiav Conduit. Txiav lub conduit kom haum nrog lub hacksaw. Kauj Ruam 4: Xaub hauv Conduit. Kauj Ruam 5: Anchor Conduit
Phi yog lub hauv paus rau Golden Ratio, Seem lossisMean Qhov piv, lossis qhov kev faib ua feem, txiav txim siab los ntawm Phi (1.618) tau paub rau cov neeg Greek li 'kev faib ib kab hauv qhov siab thiab txhais tau tias piv' thiab rau cov neeg ua yeeb yam Renaissance asthe 'Divine Proportion' Nws tseem hu ua Golden Section, Golden Ratio thiab lub ntsiab lus Golden
Kev sib tsoo, photons, pib los ntawm kev so thiab dhia mus rau qee qhov nrawm yog txhua yam piv txwv ntawm cov khoom lossis cov xwm txheej uas qhov kev hloov pauv sai sai tshwm sim. Photons raug tso tawm ntawm qhov nrawm ntawm lub teeb ntsig txog qhov nruab nrab thiab lawv hloov nrawm thaum nkag mus rau lwm qhov nruab nrab
Txhua hom kab mob los yog kab mob tau tshwm sim los ntawm cov txheej txheem ntawm kev lom neeg evolution. Hauv cov tsiaj uas yug me nyuam, nrog rau tib neeg, lo lus hom yog hais txog ib pab pawg neeg laus uas muaj hnub nyoog sib txuam, ua rau cov xeeb ntxwv muaj txiaj ntsig - uas yog, cov xeeb ntxwv lawv tus kheej muaj peev xwm tsim tawm
Physical geographers kawm lub ntiaj teb lub caij, huab cua, huab cua, av, kwj deg, landforms, thiab dej hiav txwv. Qee qhov kev qhuab qhia hauv lub cev thaj chaw muaj xws li geomorphology, glaciology, pedology, hydrology, climatology, biogeography, thiab dej hiav txwv
CH3CH2OH, lub npe hu ua ethanol, yog ib qho cawv uas muaj cov saw hlau luv luv thiab cov pab pawg hydrophilic. Cawv muaj peev xwm yaj hauv dej vim yog pawg cawv thaum kawg, tab sis raws li cov saw hlau carbon loj hlob ntev dua los yog loj dua (vim yog branching), solubility txo
Raffia palms, nrog nplooj mus txog 25 meters ntev thiab 3 meters dav, muaj nplooj loj tshaj plaws ntawm txhua tsob nroj. Corypha xibtes muaj qhov loj tshaj plaws inflorescence (paj ib feem) ntawm cov nroj tsuag, txog li 7.5 meters siab thiab muaj ntau lab paj me me
Sizing ntawm Standard Ntoo Tsob Ntoo Loj Girth 1 meter saum av Approx. Qhov siab tsis tu ncua 8-10cm 2.50-3.00m Xaiv Standard 10-12cm 3.00-3.50m Hnyav Standard 12-14cm 3.00-3.50m Ntxiv Heavy Standard 14-16cm 4.25-4.50m
Qhov teeb meem tseem ceeb yog xav tias yog 'cov nyhuv projectile,' los ntawm cov khoom hlau xws li cwj mem, ntawv clips thiab txawm tias lub tog raj kheej oxygen tau rub mus rau cov hlau nplaum muaj zog MRI
Muaj ntau tshaj peb lab qhov sib txawv ntawm koj cov genome thiab lwm tus. Ntawm qhov tod tes, peb txhua tus yog 99.9 feem pua zoo tib yam, DNA-wise. (Los ntawm qhov sib txawv, peb tsuas yog kwv yees li 99 feem pua zoo ib yam li peb cov txheeb ze ze tshaj plaws, chimpanzees.)
Thaum CuCl2 yaj nyob rau hauv H2O (dej) nws yuav dissociate (dissolve) rau hauv Cu2+ thiab Cl-ions. Cov (aq) qhia tau hais tias lawv yog aqueous – yaj nyob rau hauv dej
Cov xeeb leej xeeb ntxwv tsim los ntawm asexual reproduction yog genetic zoo tib yam rau lawv niam lawv txiv. Cov kab mob reproduce asexually nyob rau hauv ntau txoj kev. Prokaryotes, suav nrog cov kab mob, rov ua dua qub los ntawm kev faib cell. Budding tshwm sim thaum lub bud loj hlob ntawm ib tug kab mob thiab loj hlob mus rau hauv ib tug tag nrho-loj kab mob
Bioleaching (los yog biomining) yog txheej txheem hauv mining thiab biohydrometallurgy (natural txheej txheem ntawm kev sib cuam tshuam ntawm microbes thiab minerals) uas rho tawm cov hlau muaj txiaj ntsig los ntawm qib qis ore nrog kev pab ntawm cov kab mob xws li kab mob lossis archaea
Txhawm rau cais qhov sib xyaw ntawm cov xim uas yog ob lub dyes, daim ntawv chromatography yog siv. Ib feem me me ntawm qhov sib tov yog muab tso rau hauv cov khoom siv absorbent, ib daim ntawv lim, nrog cov kuab tshuaj. Ob lub dyes yuav txav mus rau nyias thiab tus number case yuav sib cais rau hauv nws cov khoom ntshiab
Tus kab mob HIV-1 thim rov qab transcriptase enzyme yog lub luag haujlwm rau kev luam ib leeg-stranded viral RNA genome rau hauv ob-stranded DNA (Sarafianos et al, 2001). Cov DNA tsim tshiab tuaj yeem muab tso rau hauv tus tswv tsev genome; tus tswv tsev feem ntau yog tib neeg nyob rau hauv rooj plaub ntawm HIV
Ozonolysis yog oxidation ntawm unsaturated bonds nyob rau hauv cov organic tebchaw los ntawm ozone. Ozonolysis feem ntau yog siv los txiav alkenes kom tau txais ob yam khoom carbonyl. Ozone kuj reacts nrog alkynes thiab hydrazones
Noun, plural: cov neeg siv khoom. Ib yam kab mob uas feem ntau tau txais zaub mov los ntawm kev pub rau lwm yam kab mob los yog cov organic teeb meem vim tsis muaj peev xwm los tsim cov khoom noj los ntawm cov khoom tsis zoo; ib heterotroph