Osmolar contrast media (LOCM) Qhov piv ntawm iodine yog lub hauv paus tseem ceeb rau kev faib cov neeg sawv cev sib txawv (piv txwv li qhov piv ntawm tus lej ntawm iodine atoms hauv molecule rau tus naj npawb ntawm osmotically active particles uas cov molecule tsim nyob rau hauv cov tshuaj)
Vertical asymptotes rau y = sec(x) y = sec (x) tshwm sim ntawm −π2,3π2 3 π 2, thiab txhua tus π n, qhov twg n yog tus lej. Qhov no yog ib nrab ntawm lub sijhawm. Muaj tsuas yog ntsug asymptotes rau secant thiab cosecant functions
Genome evolution yog cov txheej txheem uas genome hloov hauv cov qauv (ib ntus) lossis qhov loj me dhau sijhawm. Genome evolution yog ib qho kev hloov pauv tas li thiab hloov zuj zus vim qhov nce zuj zus ntawm cov genomes, ob qho tib si prokaryotic thiab eukaryotic, muaj rau cov zej zog tshawb fawb thiab cov pej xeem loj
Vim li cas ATP yog ib qho tseem ceeb molecule hauv metabolism?A. Nws muab lub zog coupling ntawm exergonic thiab endergonicreactions. Lawv muab cov molecules rau hauv ntau lub zog-richmolecules
Ib yam khoom uas ua tau zoo li cov kua, thiab tuaj yeem nchuav, tab sis qhov ntawd ua zoo li cov khoom thaum koj siv zog rau nws los ntawm kev thawb nws los yog nyem nws. Nws yog tsim los ntawm kev sib xyaw cornflour (tseem hu ua cornstarch) nrog dej. Oobleck yog cov kua uas tsis yog-Newtonian
Cov ntsiab lus feem ntau muab sib xyaw ua ke los ntawm ob hom kev sib txuas ntawm cov tshuaj lom neeg: ionic bonding thiab covalent bonding. Cov ntsiab lus tsis yog hlau feem ntau yog luv electrons thiab yuav sib koom ua ke los ntawm kev sib koom electrons. Thaum ib daim ntawv cog lus tau tsim los ntawm cov atoms ntawm cov khoom sib txawv, ib qho kev sib txuas tau tsim
Nroj tsuag thiab tsiaj hlwb sib koom ib qho tseem ceeb heev, muaj cov nucleus. Chromatin yog coiled strands ntawm DNA uas pom muaj kis thoob plaws hauv lub nucleus, uas tuaj ua ke thiab coil nruj nreem thaum lub sij hawm cell replication. Muaj ntau cov organelles uas yog tshwj xeeb rau cov nroj tsuag
Dej muaj peev xwm yaj ntau yam khoom sib txawv, uas yog vim li cas nws yog ib qho hnyav hnyav. Thiab, dej yog hu ua 'universal solvent' vim nws dissolves ntau tshaj li lwm yam kua. Qhov no tso cai rau cov dej molecule los ua attracted rau ntau lwm hom molecules
Ib yam li linear momentum tau txais kev cawmdim thaum tsis muaj lub zog sab nraud, lub zog angular yog qhov tsis tu ncua lossis khaws cia thaum lub net torque yog xoom. Yog tias qhov hloov pauv ntawm lub zog angular Δ L yog xoom, ces lub angular momentum yog tas li; so, → L = constant L → = constant (when net τ=0)
Number of Subsets ntawm ib tug muab Set: Yog hais tias ib tug set muaj 'n' ntsiab, ces tus naj npawb ntawm subsets ntawm lub teeb yog 22. Yog hais tias ib tug set muaj 'n' ntsiab, ces tus naj npawb ntawm subsets tsim nyog ntawm lub teeb yog 2n - 1 ⇒ Tus naj npawb ntawm cov subsets ntawm A yog 3 = 22 - 1 = 4 - 1
Ib coulomb ib ob yog sib npaug rau ib coulomb nqi tshaj ib ob. Coulombs ib ob tuaj yeem sau luv li C / s, piv txwv li 1 coulomb ib ob tuaj yeem sau ua 1 C / s. Koj tuaj yeem sim peb lub Coulomb's Law charge calculator los xam quab yuam, nyob deb, lossis them
Qhov ntim ntawm ib qho roj av yog qhov sib npaug ntawm nws qhov siab thaum qhov kub thiab txias tsis tu ncua (Boyle txoj cai). Nyob rau tib lub sijhawm ntawm qhov kub thiab txias, qhov sib npaug ntawm tag nrho cov pa roj muaj tib tus lej ntawm cov molecules (Avogadro txoj cai)
Lub peev xwm kub tshwj xeeb yog qhov kub ntawm lub zog yuav tsum tau nce qhov kub ntawm cov khoom hauv ib chav tsev ntawm qhov loj. Qhov tshwj xeeb kub muaj peev xwm ntawm cov khoom siv yog lub cev muaj zog. Nws kuj yog ib qho piv txwv ntawm cov cuab yeej uas nws kim heev vim nws tus nqi yog proportional rau qhov loj ntawm qhov system raug tshuaj xyuas
Kub. Lub Savanna biome muaj qhov nruab nrab kub ntawm 25oC. Nws mus txog 30oC thaum lub caij ntuj sov thiab qis li 20oC thaum lub caij ntuj no, txhua xyoo. Vim tias qhov kub hloov pauv me ntsis nyob rau thaj tsam ntawm 20oC thiab 30oC hauv Savanna biome, nws yooj yim rau tsiaj thiab nroj tsuag hloov
Lub sij hawm ntawm lub sij hawm ntawm ob txheej xwm los yog lub sij hawm uas ib qho kev tshwm sim txuas ntxiv. ib lub sij hawm ntawm kaum mus rau kaum tsib xyoos
Ib qho ntawm qhov txias tshaj plaws ntawm Ionic yog cov cuab yeej cuab tam uas lawv muab rau kev tsim tag nrho cov ntxaij vab tshaus thiab cov cim uas koj xav tau. Txawm hais tias koj tsis siv Ionic, nws yuav tsim nyog txhim kho tsuas yog siv cov cuab yeej no thiab tom qab ntawd hloov pauv cov ntxaij vab tshaus thiab cov cim rau koj qhov project tiag
Cr2+ yog qhov txo qis hauv qhov xwm txheej. Thaum ua raws li tus neeg sawv cev txo qis, nws tau oxidized rau Cr3 + (electronic configuration, d3). Qhov d3configuration no tuaj yeem sau ua t32g teeb tsa, uas yog qhov kev teeb tsa ruaj khov dua. Nyob rau hauv rooj plaub ntawm Mn3 + (d4), nws ua raws li tus neeg sawv cev oxidizing thiab tau txo mus rau Mn2 + (d5)
Nyob rau hauv SCNT lub nucleus, uas muaj cov kab mob DNA, ntawm ib tug somatic cell (ib lub cev cell uas tsis yog ib tug phev los yog qe cell) raug tshem tawm thiab tag nrho cov cell muab pov tseg. Nyob rau tib lub sijhawm, lub nucleus ntawm lub qe qe raug tshem tawm
Biotic thiab abiotic factor Biotic yam muaj xws li tsiaj txhu, nroj tsuag, fungi, kab mob, thiab protists. Qee qhov piv txwv ntawm abiotic yam yog dej, av, huab cua, hnub ci, kub, thiab cov zaub mov
Mechanical weathering tsoo pob zeb rau hauv me me, thiab ua rau thaj tsam ntawm tag nrho cov khoom. Los ntawm kev nce thaj tsam saum npoo, cov txheej txheem tshuaj lom neeg tuaj yeem ua tau yooj yim dua rau ntawm pob zeb nto. 6
Acid-catalyzed lub cev qhuav dej ntawm 3-methyl-2-pentanol muab peb alkenes: 3-methyl-1-pentene, 3-methyl-2-pentene, thiab 3-methylenepentane. Kos cov qauv ntawm carbocation intermediate ua rau tsim ntawm 3-methyl-2-pentene
Ntxiv yog lo lus siv los piav qhia txog ob lossis ntau tus lej ua ke. Cov kos npe ntxiv '+' yog siv los qhia qhov sib ntxiv: 2 + 2. Lub + tuaj yeem siv tau ntau zaus raws li qhov xav tau: 2 + 2 + 2. Rau cov npe ntev dua ntawm cov lej nws feem ntau yooj yim sau cov lej hauv kab thiab preform lub laij lej. hauv qab
Ib qho yog Arrhenius lub ntsiab lus, uas tig mus nyob ib puag ncig lub tswv yim tias cov kua qaub yog cov khoom uas ionize (so tawm) hauv cov kua dej los tsim cov hydrogen (H +) ions thaum lub hauv paus tsim hydroxide (OH-) ions hauv kev daws
Kev hloov tshuaj lom neeg tshwm sim los ntawm cov tshuaj tiv thaiv tshuaj, thaum lub cev hloov pauv yog thaum cov teeb meem hloov pauv tab sis tsis yog tshuaj lom neeg. Piv txwv ntawm kev hloov tshuaj lom neeg yog hlawv, ua noj, xeb, thiab rotting. Piv txwv ntawm kev hloov lub cev yog boiling, melting, khov, thiab shredding
Hloov cov cedar dawb txiav rau hauv lub lauj kaub 10-nti uas muaj cov sib npaug ntawm qhov sib npaug ntawm cov av, compost thiab perlite ob lub lis piam tom qab nws cov hauv paus hniav. Loj hlob nws nyob rau hauv ib qho chaw kaj, chaw nyob sab nraum zoov nrog ib nti dej txhua lub lim tiam rau lub caij ntuj sov
Re: Enthalpy Vim tias Cl2 yuav tsum nqus lub zog ntawm ib puag ncig los ua 2Cl, qhov no txhais tau hais tias lub zog ntawm 2Cl yog ntau dua li ntawm Cl2, yog li delta H yog qhov zoo
Krypton yog siv los ua lag luam ua cov roj filling rau lub zog txuag hluav taws xob fluorescent. Nws kuj yog siv rau hauv qee lub teeb nyem siv rau kev yees duab ceev. Tsis zoo li cov pa roj sib zog hauv nws pab pawg, nws muaj zog txaus los tsim qee cov tshuaj lom neeg. Piv txwv li, krypton yuav hnov mob nrog fluorine los ua krypton fluoride
Teb Cov Kws Tshaj Lij Tshaj Lij Tshaj Lij Tshaj Lij yog hais txog kev sib txuas lus uas tsis suav nrog cov lus, tab sis feem ntau nrog lawv. Paralanguage sib txuas lus kev xav thiab cov lus teb. Ib qho piv txwv ntawm qhov no yog thaum tib neeg hais 'um' lossis thaum lawv ua qhov tsis meej pem ib qho hais 'hmm'
Cov yam ntxwv ntawm peb-dimensionalfigure yog lub ntsej muag, ntug thiab vertices. Qhov peb qhov ntev ua rau cov npoo ntawm 3D geometric duab. Lub voos xwmfab, duab plaub prism, kheej kheej, lub khob hliav qab thiab lub tog raj kheej yog cov duab 3-dimensional uas peb pom nyob ib puag ncig peb
Polynomial identities yog qhov sib npaug uas muaj tseeb rau txhua qhov txiaj ntsig ntawm qhov sib txawv. Piv txwv li, x² + 2x + 1 = (x + 1)² yog tus kheej. Daim vis dis aus qhia no muab piv txwv ntau ntawm cov cim thiab sib tham txog seb peb ua pov thawj qhov sib npaug yog tus kheej li cas
Lub tuam tsev txhais tau hais tias yog cov nyuj muaj kev hwm thiab kho tau zoo, lawv yuav yooj yim dua los tuav uas yuav ua rau cov txheej txheem zoo dua rau txhua tus neeg koom tes
Ib daim duab plaub muaj peb yam khoom: Txhua lub kaum sab xis ntawm lub duab plaub yog 90 ° Cov sab nraud ntawm lub duab plaub yog sib npaug thiab Parallel. Diagonals ntawm ib daim duab plaub bisect ib leeg
Qhov piv txwv zoo tshaj plaws ntawm cov kua dej tsis zoo yog cov kua polar thiab cov kua tsis muaj polar uas tsis yaj rau ib leeg
Lub hli yog tib qhov chaw hauv peb lub hnub ci, tsis yog lub ntiaj teb, qhov chaw uas tib neeg tau mus xyuas. Lub hli zoo li cov suab puam nrog cov tiaj, roob, thiab hav. Nws kuj muaj ntau lub qhov craters, uas yog qhov tsim thaum cov khoom siv tau tsoo lub hli saum npoo ntawm kev kub ceev. Tsis muaj huab cua ua pa ntawm lub hli
Intermediate hlau conduit (IMC) muaj cov phab ntsa nyias dua li RMC thiab hnyav li ib feem peb tsawg. IMC muaj phab ntsa nyias dua li RMC thiab hnyav li ib feem peb tsawg dua RMC. Sab nraud muaj zinc-raws li txheej, thiab sab hauv muaj kev pom zoo organic corrosion-resistant txheej. IMC yog sib hloov nrog galvanized RMC
Hauv kev tshuaj xyuas cov pej xeem ntawm cov koom haum qhov teeb meem ntawm kev teeb tsa pej xeem ciam teb yuav tsum tau xav txog. Ib txoj hauv kev siv dav tshaj plaws raws li kev ua haujlwm ntawm Hannan thiab Freeman (1977)
Lub luag haujlwm tseem ceeb ntawm plasma membrane yog los tiv thaiv lub cell ntawm nws ib puag ncig. Ua los ntawm cov phospholipid bilayer nrog cov proteins embedded, plasma membrane yog xaiv permeable rau ions thiab organic molecules thiab tswj kev txav ntawm cov khoom hauv thiab tawm ntawm cov hlwb
Txheeb xyuas txoj kab nqes, m. Qhov no tuaj yeem ua tiav los ntawm kev suav cov nqes hav ntawm ob lub ntsiab lus ntawm txoj kab uas siv cov qauv nqes hav. Nrhiav y-intercept. Qhov no tuaj yeem ua tau los ntawm kev hloov txoj kab nqes thiab cov kev sib koom ua ke ntawm qhov taw tes (x, y) ntawm txoj kab hauv txoj kab nqes-intercept formula thiab tom qab ntawd daws rau b
Eukaryotic hlwb feem ntau loj dua li cov hlwb prokaryotic, thiab lawv muaj nyob hauv ntau cov kab mob. Cov kab mob uas muaj eukaryotic hlwb hu ua eukaryotes, thiab lawv txawv ntawm cov kab mob mus rau tib neeg. Eukaryotic hlwb kuj muaj lwm cov organelles dua li cov nucleus
Thawj lub kaum sab xis projection yog ib txoj hauv kev tsim a2D kos duab ntawm 3D khoom. Nws yog siv nyob rau hauv cov teb chaws Europe thiab Asia thiab tsis tau officially siv nyob rau hauv Australia tau ntau xyoo. Nyob rau hauv teb chaws Australia, peb lub kaum sab xis projection yog txoj kev nyiam ntawm orthographic projection. Nco ntsoov lub cim rau firstangle orthographic projection