Litre-atmosphere. ['lēd·?·r ¦at·m?‚sfir] (physics) Ib chav tsev ntawm lub zog sib npaug rau kev ua haujlwm ntawm lub piston los ntawm cov kua dej ntawm lub siab ntawm 1 tus qauv huab cua (101,325 pascals) thaum lub piston sweeps tawm ib ntim ntawm 1 liter; sib npaug rau 101.325 joules
Muaj ob theem sib txawv hauv lub neej voj voog ntawm ferns. Thawj theem yog qhov gametophyte. Spores yog tsim nyob rau hauv underside ntawm mature nroj tsuag. Cov no yuav germinate thiab loj hlob mus rau hauv me me, lub plawv zoo li cov nroj tsuag hu ua gametophytes
Kab zaj duab xis thiab dot zaj duab xis: Dab tsi yog qhov txawv? Lawv yog tib yam! Kab phiaj xwm kab thiab dot plots qhia tias cov ntaub ntawv muaj nuj nqis npaum li cas faib raws li kab zauv: Vim li cas, Cov Qauv Txheej Txheem Feem Ntau Cov Qauv Zauv hu lawv cov kab hauv cov qauv rau qib 2 txog qib 5, thiab cov phiaj xwm hauv qib 6 txuas ntxiv mus
Quenching yog hais txog txhua tus txheej txheem uas txo cov fluorescence siv ntawm ib yam khoom. Ntau yam txheej txheem tuaj yeem ua rau quenching, xws li kev zoo siab hauv lub xeev cov tshuaj tiv thaiv, kev hloov hluav taws xob, kev tsim nyuaj thiab kev sib tsoo quenching. Molecular oxygen, iodide ions thiab acrylamide yog cov tshuaj quenchers
Kev sib npaug ntawm cov pa roj carbon dioxide thiab oxygen hauv huab cua yog photosynthesis. Qhov sib npaug ntawm cov pa roj carbon dioxide thiab cov pa oxygen hauv huab cua yog tswj hwm los ntawm cov pa tawm thiab cov pa roj carbon dioxide noj thaum lub sijhawm photosynthesis los ntawm cov nroj tsuag. Nws kuj raug tswj los ntawm cov pa roj carbon dioxide tso tawm los ntawm cov tsiaj thaum ua pa
Limestone muaj ntau yam siv: raws li cov khoom siv hauv tsev, ib qho tseem ceeb ntawm cov pob zeb (Portland cement), raws li kev sib sau ua ke rau lub hauv paus ntawm txoj kev, raws li cov xim dawb los yog muab tso rau hauv cov khoom xws li tshuaj txhuam hniav lossis xim, ua cov khoom siv tshuaj lom neeg rau kev tsim cov txiv qaub. , raws li ib tug av txias, thiab raws li ib tug nrov kho kom zoo nkauj
Txhua tus tib neeg (thiab tsiaj) tus cwj pwm yog ib yam khoom ntawm cov txheej txheem lom neeg thiab cov txheej txheem, koom nrog ntau qib sib txuas. Kev nkag siab txog cov kab mob lom neeg ua ntej ntawm tus cwj pwm tuaj yeem ua rau muaj kev kho mob rau kev puas siab puas ntsws, xws li tshuaj uas cuam tshuam rau kev ua haujlwm ntawm neurotransmitter
Sulfuric acid
Tsib Naj Npawb Summary yog ib txoj hauv kev los sau cov ntaub ntawv faib tawm. Tsib tus lej yog qhov tsawg kawg nkaus, thawj quartile (Q1) tus nqi, qhov nruab nrab, qhov thib peb quartile (Q3) tus nqi, thiab qhov siab tshaj plaws. Qhov no txawv heev ntawm cov ntaub ntawv ntxiv. Nws yog ib qho outlier thiab yuav tsum tau muab tshem tawm
Cov ntsiab lus hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine thiab iodine yeej tsis pom los ntawm lawv tus kheej. Lub xya, hydrogen, yog "oddball" ntawm lub rooj zaum, tawm ntawm nws tus kheej
Maidenhead grid squares faib lub ntiaj teb rau hauv 324 thaj chaw loj ntawm 10 degrees ntawm latitude los ntawm 20 degrees ntawm longitude thiab hu ua teb. Txhua daim teb tau muab faib ua 100 squares. Qhov no yog qhov uas lub npe daim phiaj squares los ntawm. Txhua qhov 100 squares sawv cev rau 1 degree los ntawm 2 degrees
Tus nqi tag nrho ntawm 3 yog 3. Tus nqi tag nrho ntawm 0 yog 0. Tus nqi tag nrho ntawm − 156 yog 156
1 Teb. Cov khoom muaj qhov ruaj khov thiab nyob hauv ib lub ntim ruaj khov. Vim hais tias cov khoom nyob rau hauv cov kua yog sib ze heev (Ntsuas ntxiv sib nrug tshaj nyob rau hauv cov khib nyiab) cov kua tsis yooj yim compress, yog li lawv ntim yog tsau. Gases kuj tuaj yeem ntws, yog li tuav cov duab ntawm lawv lub thawv tag nrho
Siv nyob rau hauv optimization Hessian matrices yog siv nyob rau hauv loj-scaleoptimization teeb meem nyob rau hauv Newton-hom txoj kev vim hais tias lawv yog cov coefficient ntawm lub quadratic lub sij hawm ntawm ib lub zos Taylor Expansion ntawm ib tug muaj nuj nqi
Ib qhov system ntawm kab zauv sib npaug muaj ob lossis ntau qhov sib npaug piv txwv li. y = 0.5x + 2 y = x - 2. Cov kev daws teeb meem ntawm xws li ib qho system yog qhov kev txiav txim khub uas yog kev daws rau ob qho tib si sib npaug. Kev daws rau qhov system yuav nyob rau hauv qhov chaw uas ob kab sib tshuam
Thuja occidentalis
Tus nqi zoo li qub tshwm sim thaum ob qhov chaw kov ib leeg thiab cov electrons txav ntawm ib qho khoom mus rau lwm qhov. Ib qho ntawm cov khoom yuav muaj tus nqi zoo thiab lwm qhov tsis zoo. Yog tias koj rub ib yam khoom sai sai, zoo li lub zais pa, lossis koj txhais ko taw ntawm cov ntaub pua plag, cov no yuav tsim cov nqi loj heev
Kev xav txog kev hloov pauv ntawm cov nthwv dej thaum lawv dhia tawm ntawm qhov thaiv; refraction ntawm nthwv dej muaj kev hloov pauv ntawm cov nthwv dej thaum lawv dhau los ntawm ib nrab mus rau lwm qhov; thiab diffraction cuam tshuam nrog kev hloov pauv ntawm cov nthwv dej thaum lawv dhau los ntawm qhov qhib lossis ib puag ncig hauv lawv txoj kev
Wiki- Lub van 't Hoff yam yog qhov sib piv ntawm qhov tseeb concentration ntawm cov khoom uas tsim thaum cov khoom yog yaj, thiab cov concentration ntawm ib yam khoom raws li xam los ntawm nws loj. Rau feem ntau tsis-electrolytes yaj hauv dej, van 't Hoff yam tseem ceeb yog 1
Glaciers yog cov muaj zog ntawm kev yaig. Zoo li cov dej ntws, lawv tshem cov pob zeb xoob ntawm cov hav uas lawv txav mus. Glaciers tuaj yeem khaws thiab txav cov khoom sib txawv ntawm qhov loj me los ntawm cov hmoov zoo rau cov pob zeb loj hauv tsev. Feem ntau cov pob zeb poob rau ntawm lub qhov dej khov ntawm cov phab ntsa hav
Nkag siab qib Baume Lub Baumé nplai ntsuas qhov tshwj xeeb lub ntiajteb txawj nqus ntawm kev daws, uas yog qhov sib piv ntawm qhov ntom ntawm, piv txwv li, qab zib phoov rau qhov ntom ntawm dej. Kev nyeem ntawv ntawm 10 degree Baume txhais tau hais tias cov kua muaj 17.5% qab zib (1 degree Baumé = 1.75% qab zib hauv cov tshuaj)
Kev nce pH txhais tau tias OH- ions yog. d. Txo pH txhais tau tias OH- ions yog. Feem ntau H + ions: pH = 4; los yog pH = 5. Teb
Nyob rau hauv geology, ib qho txhaum yog ib qho kev puas tsuaj los yog kev tsis sib haum nyob rau hauv ib lub ntim ntawm pob zeb hla uas tau muaj kev hloov pauv loj heev vim yog lub pob zeb loj. Lub zog tso tawm cuam tshuam nrog kev txav nrawm ntawm kev ua txhaum cai yog qhov ua rau feem ntau av qeeg
Ib daim phiaj xwm ceev qhia qhov kev faib tawm ntawm tus lej sib txawv. Nyob rau hauv ggplot2, lub geom_density () muaj nuj nqi yuav siv sij hawm saib xyuas ntawm cov ntsiav ceev kwv yees thiab lub ntsiab lus soj ntsuam. Ib txoj haujlwm ntau hauv dataviz yog los sib piv cov kev faib tawm ntawm ntau pawg. Cov phiaj xwm ceev tshaj plaws uas koj tuaj yeem ua nrog ggplot2
Cov variables P 1 P_1 P1?P, pib subscript, 1, kawg subscript, v 1 v_1 v1?v, pib subscript, 1, kawg subscript, h 1 h_1 h1?h, pib subscript, 1, kawg subscript xa mus rau lub siab , ceev, thiab qhov siab ntawm cov kua dej ntawm point 1, whereas lub variables P 2 P_2 P2?P, pib subscript, 2, kawg subscript, v 2 v_2 v2?v, pib
Cov theem ntawm lub hli theem nce, kev hloov mus thiab teem sij hawm daim duab qhia txoj hauj lwm Tag Nrho Lub hli nce thaum hnub poob, hla meridian thaum ib tag hmo, teem rau hnub sawv E Waning Gibbous sawv tom qab hnub poob, hla ib tag hmo, teev tom qab hnub sawv F Lub Peb Hlis Ntuj nce thaum ib tag hmo, kev mus los. meridian ntawm lub hnub tuaj, teev thaum tav su G
Passive Thauj. kev txav ntawm cov ntaub ntawv hla lub cell membrane uas siv tsis muaj zog. Concentration Gradient. Qhov sib txawv ntawm qhov concentration ntawm cov kuab tshuaj ntawm ob sab ntawm daim nyias nyias. Molecules ib txwm txav los ntawm HIGH concentration mus rau qis concentration
Cov ntoo Oak twg loj hlob zoo tshaj plaws hauv Oklahoma? Shumard Oak. Qhov loj tshaj plaws ntawm Oklahoma's Shumard oaks (Quercus shumardii) zoo siab rau sab qab teb sab hnub tuaj ntawm lub xeev. Dawb Oak. Lub Nroog McCurtain tseem yog lub tsev rau Oklahoma qhov loj tshaj plaws dawb ntoo qhib, ntsuas 82 ko taw siab nrog 86-ko taw kis. Bur Oak
Lub collimator yog ib qho cuab yeej uas nqaim ib lub teeb ntawm cov particles los yog nthwv dej. Txoj kev nqaim tuaj yeem txhais tau tias yog ua kom cov kev taw qhia ntawm kev txav mus los ua kom zoo dua nyob rau hauv ib qho kev taw qhia tshwj xeeb (piv txwv li, ua kom lub teeb sib sib zog nqus los yog cov kab hluav taws xob sib luag), lossis ua rau qhov chaw hla ntawm lub nqaj kom me me (beamlimiting device)
Volcano: Whakaari / Dawb Island
Valley point (1) (ntawm programmableunijunction transistor yam ntxwv) Lub ntsiab lus ntawm qhov tam sim no-voltage yam ntxwv sib haum mus rau qhov thib ob qis tshaj tam sim no uas dvAK / diA = 0 thaum lub rooj vag yog biased los ntawm cov hluav taws xob tiv thaiv hluav taws xob
Tag nrho cov yam ntxwv ntawm lub cev lossis thaj av muaj xws li cov ntsiab lus zoo xws li berms, mounds, toj, ridges, cliffs, valleys, dej ntws, ceg av qab teb, volcanoes, thiab ntau lwm yam qauv thiab loj-scaled (xws li pas dej vs. pas dej, toj vs. roob) cov ntsiab lus suav nrog ntau yam hauv dej thiab dej hiav txwv dej hiav txwv thiab sub
Kev piav qhia. Thermo Scientific Lambda DNA/HindIII Marker yog pom zoo rau sizing ntawm linear ob-stranded loj DNA fragments nyob rau hauv agarose gels. Lambda DNA yog digested kom tiav nrog qhov tsim nyog Thermo Scientific txwv enzyme(s) thiab purified thiab yaj nyob rau hauv cia tsis
Cov lej ntawm oxidation tooj ntawm tag nrho cov atoms nyob rau hauv ib tug nruab nrab compound yog 0. Y = -2. Yog li Oxidation naj npawb ntawm Carbon hauv C2H5OH yog -2
Cov ntshav sawv cev rau ob qho tib si hauv lub cev (cov kua dej hauv cov qe ntshav) thiab cov khoom siv ntxiv (cov ntshav plasma). Lwm yam intravascular fluid yog lymph
Txawm hais tias kev loj hlob ntawm tes feem ntau yog cov txheej txheem tas mus li, DNA yog synthesized thaum lub sij hawm tsuas yog ib theem ntawm lub voj voog ntawm tes, thiab cov chromosomes replicated ces faib rau tus ntxhais nuclei los ntawm ib tug complex series ntawm cov txheej xwm ua ntej cell division
Teb Cov Kws Tshaj Lij Tshaj Tawm Ob leeg meiosis thiab mitosis xa mus rau cov txheej txheem ntawm kev faib cell. Lawv siv cov kauj ruam zoo sib xws rau celldifferentiation, xws li prophase, metaphase, anaphase, thiab telophase.Txawm li cas los xij, mitosis yog cov txheej txheem uas koom nrog hauv asexualreproduction, thaum meiosis koom nrog kev sib deev
Puas yog photosynthesis nce lub ntiaj teb loj? Tsis yog tsis muaj kev hloov pauv zoo hauv pawg. Photons nyob rau hauv lawv tus kheej txoj cai yog massless thiab muaj zog. Nyob rau hauv absorbing lawv photosynthesis converts lub teeb lub zog rau hauv tshuaj daim ntawv cog lus energies thiab lwm yam photons ntawm qis zog nyob rau hauv daim ntawv ntawm tshav kub
Siab, siab, siab tshaj Douglas fir tuaj yeem loj hlob mus txog 200 lossis 300 ko taw hauv cov tsiaj qus, muab zaub mov thiab thaj chaw zes rau cov tsiaj qus, suav nrog grouse, nuthatches, warblers, squirrels thiab chipmunks. Ib tsob ntoo cultivated yeej tsis ua tiav tib qhov siab lossis grandeur. Hauv koj lub vaj, Douglas fir tsuas yog loj hlob 40 txog 60 feet siab