Hawking tau nkag mus rau University College ntawm University of Oxford thaum muaj hnub nyoog 17. Txawm hais tias nws xav kawm lej, Oxford tsis muaj degree hauv qhov tshwj xeeb, yog li Hawking gravitated rau physics thiab, tshwj xeeb tshaj yog, cosmology
Qhov ntim ntawm ib lub tog raj kheej, muab los ntawm cov mis V = πr2h, yog 539 cubic inches. Qhov ntim ntawm ib lub tog raj kheej, muab los ntawm cov mis V = πr2h, yog 539 cubic inches. Hauv cov mis, r sawv cev rau lub vojvoog thiab h sawv cev qhov siab ntawm lub tog raj kheej
Cov khoom lag luam mus tas li hais txog cov khoom tiag lossis cov khoom tsim los yog cov txiaj ntsig uas tshwm sim los ntawm tus cwj pwm thiab siv los ntawm cov kws qhia ntawv tsis tu ncua hauv ntau txoj hauv kev. Qhov txiaj ntsig ntawm cov khoom lag luam mus tas li yuav yog suav cov ntawv uas nyob hauv lub rooj tom qab tus tub ntxhais kawm tau ua tiav tu
Alkylphenols (APs) thiab alkylphenol ethoxylates (APEs) yog cov kev ua haujlwm siab, muaj txiaj ntsig zoo, cov khoom sib txuas uas tau siv nyab xeeb hauv ntau yam khoom thiab kev siv rau ntau tshaj tsib caug xyoo. Cov tsev neeg tshuaj no yog cov kawm ntau tshaj plaws hauv ntiaj teb
Txoj cai lij choj ntawm kev xav hais tias qhov xwm txheej ntawm lub teeb pom kev, lub teeb pom kev zoo, thiab qhov qub rau saum daim iav txhua qhov nyob hauv tib lub dav hlau. Tsis tas li ntawd, lub kaum sab xis ntawm kev xav yog sib npaug rau lub kaum sab xis ntawm qhov xwm txheej.Qhov kev xav no yog hu ua diffuse reflection, thiab yog qhov ua rau peb pom cov khoom tsis ci ntsa iab
Lo lus hluav taws xob los ntawm Greek electron, uas tsis txhais hais tias koj yuav xav li cas. Nws txhais tau tias 'amber,' lub pob zeb daj lossis xim av xim av siv rau cov hniav nyiaj hniav kub. Cov neeg qub pom tias thaum koj rub lub amber, nws tau txais cov nqi hluav taws xob thiab yuav khaws cov khoom teeb xws li plaub thiab straw
7 daim ntawv cog lus
Bobtail squid muaj kev sib raug zoo nrog cov kab mob bioluminescent (Aliivibrio fischeri), uas nyob hauv lub teeb tshwj xeeb hauv cov squid lub mantle. Lub luminescent zog ntawm cov kab mob tswj cov noob qhia nyob rau hauv lub teeb lub cev
Av organic teeb meem (SOM) yog cov organic teeb meem ntawm cov av, muaj cov nroj tsuag thiab tsiaj detritus ntawm ntau theem ntawm decomposition, hlwb thiab cov ntaub so ntswg ntawm cov av microbes, thiab cov khoom uas av microbes synthesize
Ib qho taw tes yog qhov tseeb zero-dimensional geometricobject. Yog vim li cas tom qab xaiv cov lus teb no yog qhov point tsis muaj qhov ntev, dav lossis qhov siab
Ib txoj haujlwm yog ib qho tshwj xeeb ntawm kev sib raug zoo uas ua ke txhua lub caij ntawm ib lub teeb nrog raws nraim ib lub caij ntawm lwm lub teeb. Ib txoj haujlwm, zoo li kev sib raug zoo, muaj lub npe, ntau yam, thiab txoj cai. Txoj cai yog piav qhia raws nraim li cas cov ntsiab lus ntawm thawj txheej sib raug nrog cov ntsiab lus ntawm cov txheej thib ob
Cov qauv siv los ntsuas lub zog thiab ua haujlwm hauv physics yog joule, uas muaj lub cim J. Ib qho 60 gram chocolate bar piv txwv muaj txog 280 Calories ntawm lub zog. Ib Calorie yog lub zog yuav tsum tau nce 1 kg ntawm dej los ntawm 1 ∘ Celsius
Lub teeb yog hom zog. Nws yog ib daim ntawv ntawm electromagnetic hluav taws xob ntawm lub wavelength uas tuaj yeem kuaj pom los ntawm tib neeg lub qhov muag. Nws yog ib feem me me ntawm electromagnetic spectrumand hluav taws xob muab tawm los ntawm cov hnub qub zoo li lub hnub. Lub teeb muaj nyob rau hauv cov pob khoom me me hu ua photons. Txhua tus nthwv dej muaj qhov zaus wavelengthor
Cov neeg tawg rog muaj teeb meem kev nyab xeeb vim lawv nyob deb ntawm ib leeg thiab tsis muaj peev xwm mloog tau ib leeg yog li lawv yuav pab tau ib leeg li cas
Txij li thaum lub bowling pob yog hnyav dua cov basketball, koj paub tias nws tau ua ntau ntom, txij li thaum nkawd ob leeg coj mus tus nqi qub chaw zuag qhia tag nrho. Lwm qhov piv txwv xav txog yog tias koj puas tau ci ncuav mog qab zib thiab yuav tsum tau sift hmoov
Cov mis loj (formula hnyav) ntawm amolecule yog qhov sib npaug ntawm qhov hnyav atomic ntawm cov atoms hauv nws cov qauv empirical. Qhov hnyav molecular (molecular hnyav) ntawm ib lub molecule yog nws qhov nruab nrab massas xam los ntawm kev ntxiv ua ke cov atomic luj ntawm theatoms nyob rau hauv cov mis molecular
Tshav Dav Hlau. Thaum ob lub nthwv dej nyob saum ib leeg, lawv ntxiv ua ke los tsim ib nthwv dej tag nrho: peb hu nws ua nthwv dej. Thaum koj superimpose lub troughs ntawm ob nthwv dej, lawv ntxiv ua ke los tsim ib lub trough loj. Qhov no yog hu ua constructive interference
NFPA 70 txhais tau hais tias Txoj Cai Lij Choj Lij Choj yog 'ib thaj tsam tiv thaiv kev poob siab kom hla los ntawm cov neeg tsim nyog nkaus xwb (ntawm qhov deb ntawm qhov chaw nyob) uas tsis raug hla los ntawm cov neeg tsis tsim nyog tshwj tsis yog raug coj los ntawm tus neeg tsim nyog'
Hauv metaphase I, 23 khub ntawm homologous chromosomes kab nyob rau hauv txoj kab nruab nrab lossis lub phaj metaphase ntawm lub xovtooj. Thaum lub sij hawm mitosis, 46 tus neeg chromosomes kab thaum lub sij hawm metaphase, tab sis thaum lub sij hawm meiosis I, 23 homologous khub ntawm chromosomes kab
"Ib kauj ruam yooj yim kom txuag tau ntses" (editorial, Lub Yim Hli 8) ua rau nco txog cov lus faj lem ntawm Cree Indians: "Thaum tsob ntoo kawg raug txiav, cov ntses kawg tau noj thiab cov dej kawg raug lom, koj yuav paub tias koj. noj tsis tau nyiaj."
Qhov hnyav, qhov hnyav, ntim, cov duab, qhov ntev / dav, kev ntxhib los mos, thiab qhov kub thiab txias tsis yog cov yam ntxwv ntawm cov khoom thiab tuaj yeem hloov pauv. Cov yam ntxwv ntawm ib yam khoom tsis hloov thaum kub thiab siab nyob li qub
Phospholipids yog ib chav kawm ntawm lipids uas yog ib feem tseem ceeb ntawm tag nrho cov cell membranes. Lawv tuaj yeem tsim cov lipid bilayers vim lawv cov yam ntxwv amphiphilic. Cov qauv ntawm cov phospholipid molecule feem ntau muaj ob hydrophobic fatty acid 'tails' thiab ib tug hydrophilic 'lub taub hau' uas muaj ib pab pawg neeg phosphate
Txoj Kev Appalachian Trail, National Scenic Trail, spans 554 mais ntawm Virginia ridges (van der Leeden). Coal deposits yog tam sim no nyob rau hauv ntau abundance nyob rau hauv Southwest Virginia Coal Field, uas muaj xws li 1,520 square mais nyob rau hauv Buchanan, Dickenson, Wise, Russell, Tazewell, Lee, thiab Scott counties
Lub zog centripetal yog ntsuas hauv Newtons thiab xam raws li qhov hnyav (hauv kg), muab faib los ntawm tangential tshaj tawm (hauv meters ib ob) squared, muab faib los ntawm lub vojvoog (hauv meters). Qhov no txhais tau hais tias yog tangential tshaj tawm ob npaug, lub zog yuav quadruple
Pob zeb yog ib qho khoom tsim ntuj tsim los ntawm ib lossis ntau cov minerals tsim ntau lab xyoo dhau los ntawm kev kub siab. Theminerals nyob rau hauv pob zeb los ntawm tib cov kua thiab roj minerals uas tsim lub ntiaj teb. Raws li cov crust tau thicker, nws squeezeda ib ncig ntawm lub hauv paus tseem ceeb uas tsim kev kub siab thiab kub los ntawm nyob rau hauv lub ntiaj teb no
Nov yog kaum kauj ruam tseem ceeb uas koj yuav xav ua txhawm rau txhim kho koj ASO hauv Apple App Store thiab Google Play. Siv lub npe piav qhia. Siv Cov Ntsiab Lus Txawj Ntse. Piav koj App Zoo. Siv cov duab thaij duab zoo. Ntxiv ib qho App Saib Ua Ntej Video. Xaiv Pawg Txoj Cai. Tsom ntsoov rau Icon Design. Txhawb kom muaj kev tshuaj xyuas zoo
Kev xeem ua kom tiav. Kev sim ua kom tiav, tseem hu ua cis-trans test, hauv cov noob caj noob ces, kev sim rau kev txiav txim siab seb ob qho kev hloov pauv cuam tshuam nrog ib qho phenotype tshwj xeeb sawv cev rau ob hom sib txawv ntawm tib lub noob (alleles) lossis yog qhov txawv ntawm ob hom noob sib txawv
Sib piv daim duab Eukaryotic Cell Prokaryotic Cell Plasma membrane nrog steroid Yog Feem ntau tsis muaj Cell phab ntsa Tsuas yog nyob rau hauv cov nroj tsuag hlwb thiab fungi (chemically yooj yim dua) Feem ntau chemically complex Vacuoles Tam sim no Cell loj 10-100um 1-10um
Teb 1: Ua kua, dej tsis yog nws tus kheej ntub, tab sis tuaj yeem ua rau lwm yam khoom ntub dej. Kev ntub dej yog lub peev xwm ntawm cov kua ua raws li qhov chaw ntawm cov khoom, yog li thaum peb hais tias ib yam dab tsi ntub dej, peb txhais tau hais tias cov kua yog lo rau saum npoo ntawm cov khoom
Lub zog muaj peev xwm yog lub zog los ntawm kev tsim txiaj ntawm ib qho khoom ua haujlwm nrog rau lwm yam khoom. Lub zog muaj peev xwm feem ntau cuam tshuam nrog kev rov ua kom muaj zog xws li lub caij nplooj ntoos hlav lossis lub zog ntawm lub ntiajteb txawj nqus. Qhov kev ua haujlwm no yog khaws cia rau hauv qhov chaw quab yuam, uas tau hais tias khaws cia ua lub zog muaj peev xwm
Lub hauv paus mRNA tau muab faib ua peb pawg, hu ua codons. Txhua codon muaj cov txheej txheem ntxiv ntawm cov hauv paus, hu ua anticodon. Anticodons yog ib feem ntawm kev hloov RNA (tRNA) molecules. Txuas rau txhua tRNA molecule yog ib qho amino acid - qhov no, cov amino acid yog methionine (met)
Tsiaj txhu yuav tsum nrhiav thiab noj zaub mov kom muaj sia nyob thaum cov nroj tsuag tsim lawv cov zaub mov ntawm photosynthesis. Cov nroj tsuag muaj cov qauv tsis pom nyob rau hauv cov tsiaj hlwb hu ua chloroplast, uas tau ntim nrog chlorophyll thiab qhov chaw photosynthesis tshwm sim hauv cell
Kev tawg tawg tshwm sim qhov chaw txias dua, magmas ntau dua (xws li andesite) ncav cuag qhov chaw. Cov pa hluav taws xob tawg tsis tuaj yeem khiav tawm tau yooj yim, yog li lub siab tuaj yeem tsim kom txog thaum cov pa tawg tawg tawg pob zeb thiab lava tawg rau saum huab cua! Lava ntws yog ntau tuab thiab nplaum, yog li tsis txhob ntws downhill li yooj yim
Tib neeg tuaj yeem cuam tshuam tag nrho plaub lub ntiaj teb spheres. Tib neeg tuaj yeem hlawv fossil fuels thiab tso pa phem rau hauv qhov chaw. Tib neeg muab cov khib nyiab pov tseg hauv qhov chaw pov tseg uas cuam tshuam rau geosphere. Tib neeg tsim cov khib nyiab uas ntws mus rau hauv cov dej uas cuam tshuam rau hydrosphere
Cov hlau nquag tshaj plaws (xws li zinc piv txwv) dhau los ua cov anode rau lwm tus thiab txi nws tus kheej los ntawm corroding (muab cov hlau) los tiv thaiv cov cathode - li no lub sij hawm sacrificial anode. Lub sacrificial anode yuav kav li ntawm 130 mus rau 150 hnub
Metamorphic pob zeb yog tsim nyob rau hauv lub ntiaj teb crust. Hloov qhov kub thiab txias tej yam kev mob yuav ua rau muaj kev hloov rau cov ntxhia sib dhos ntawm lub protolith. Cov pob zeb metamorphic thaum kawg raug nthuav tawm ntawm qhov chaw los ntawm kev txhawb nqa thiab yaig ntawm cov pob zeb overlying
Phosphors muab lub teeb pom kev tom qab muaj zog. Qhov no txhais tau tias lawv yuav tsum tau tsau lub teeb rau ib ntus ua ntej lawv yuav ci hauv qhov tsaus ntuj. Qee zaum cov khoom ci hauv qhov tsaus ntuj tsuas yog ci ntsa iab heev rau lub sijhawm luv luv. Feem ntau, koj yuav tsum muab lawv tso rau hauv qhov chaw tsaus heev kom pom lawv lub ntsej muag ntsuab tsaus
Kev saib xyuas ntawm kev ruaj ntseg sab hauv txawm tias muaj kev hloov pauv hauv ib puag ncig sab nraud yog hu ua homeostasis
Ib puag ncig cuam tshuam li cas rau tib neeg biology? Kev hloov pauv hauv huab cua tsim kev hloov pauv hauv ib puag ncig uas ua rau muaj kev hloov pauv hauv tib neeg biology los ntawm kev noj zaub mov. Ob lub ntsiab lus uas piav qhia txog lub cev zoo tshaj plaws: nws yog thawj qhov kev hloov pauv hloov pauv uas txawv tib neeg los ntawm lwm yam tsiaj
SOLVING EQUATIONS CONTAINING ABSOLUTE VALUE(S) Kauj Ruam 1: Cais tawm tus nqi tseeb. Kauj ruam 2: Teem kom muaj nuj nqis nyob rau hauv qhov tseeb tus nqi notation sib npaug rau + thiab - qhov ntau nyob rau sab nraud ntawm qhov sib npaug. Kauj Ruam 3: daws qhov tsis paub hauv ob qho tib si sib npaug. Kauj Ruam 4: Tshawb xyuas koj cov lus teb analytically lossis graphically