(p) Lub suab (hauv kev suav tomography) yog qhov piv ntawm tus neeg mob lub rooj nce mus rau tag nrho cov nominal beam dav rau CT scan. Lub suab zoo cuam tshuam txog qhov ntim kev ceev ceev mus rau cov ntu thinnest uas tuaj yeem tsim kho dua tshiab. Pitch = rooj txav ib qho kev sib hloov/slice collimation
Qhov laj thawj yog tias cov dej ntawm nws tus kheej sib cais ua hydrogen thiab hydroxide ions. Thaum cov tshuaj yog qhov yooj yim heev, cov hydroxide ions ntxiv yuav hnov mob nrog txhua yam hydronium yuav luag sai li sai tau thaum nws tsim. Yog li qhov concentration ntawm hydrogen ions yog tsawg heev, yog li qis heev uas nws feem ntau tsis quav ntsej
Cov duab tseem ceeb yog qhov tseem ceeb los qhia qhov tseeb ntawm koj cov lus teb. Qhov no yog qhov tseem ceeb hauv kev tshawb fawb thiab engineering vim tias tsis muaj cov cuab yeej ntsuas tuaj yeem ua qhov ntsuas nrog 100% precision. Siv cov nuj nqis tseem ceeb tso cai rau tus kws tshawb fawb paub tias cov lus teb meej npaum li cas, lossis qhov tsis paub meej npaum li cas
Nyob rau hauv cov ntsiab lus, ib tug series Circuit Court txhais tau tias tsuas muaj ib txoj kev uas tam sim no ntws. Los ntawm cov ntsiab lus no, peb txoj cai ntawm series circuits ua raws li: tag nrho cov khoom sib koom ua ke tam sim no; resistances ntxiv rau qhov sib npaug ntawm qhov loj dua, tag nrho kev tiv thaiv; thiab qhov hluav taws xob poob ntxiv kom sib npaug ntawm qhov loj dua, tag nrhovoltage
Sab saum toj 10 qhov chaw khoom pom thaum nruab hnub Lub hnub. Obviously, koj tuaj yeem pom hnub ci hnub ci, tab sis paradoxically, peb tau hais kom tsis txhob saib, vim ntshai ua rau peb lub qhov muag. Lub hli. Lub ntiaj teb Venus. Lub ntiaj teb-orbiting satellites. Lub ntiaj teb Jupiter. Lub ntiaj teb Mars. Cov hnub qub thaum eclipses. Lub hnub qub comets
Lub inverse ntawm ib tug muaj nuj nqi yog ib tug muaj nuj nqi uas reverses lub 'ffect' ntawm tus thawj muaj nuj nqi. Muab qhov muaj nuj nqi, hais f(x), txhawm rau nrhiav qhov hloov pauv ntawm txoj haujlwm, peb thawj zaug hloov f(x) rau y. Tom ntej no, peb hloov tag nrho x rau y thiab y rau x. thiab ces peb daws rau y. Qhov kev daws teeb meem rau y yog qhov hloov pauv ntawm qhov qub ua haujlwm
Daim duab. npe. Daim duab qhia txog kev sib raug zoo, feem ntau ua haujlwm, nruab nrab ntawm ob pawg ntawm cov lej raws li cov ntsiab lus uas muaj kev sib koom tes txiav txim siab los ntawm kev sib raug zoo. Kuj hu ua zaj. Ib qho khoom siv duab, xws li daim ntawv qhia ncuav qab zib lossis daim duab qhia, siv los qhia txog kev sib raug zoo
Grasshoppers tuaj yeem dhia txog 25 cm siab nyob ib puag ncig 1 meter ntev. Yog tias tib neeg tuaj yeem dhia tau deb npaum li cov nyom nyom ua, piv rau qhov loj me, ces peb tuaj yeem dhia ntau dua qhov ntev ntawm qhov chaw ncaws pob. Thegrasshopper tuaj yeem dhia kom deb li deb tau vim nws ob txhais ceg ua zoo li me me catapults
Lub creep yog thaum weathered pob zeb yog rub rau hauv av. Nws yog qhov kev puas tsuaj tsawg tshaj plaws thiab feem ntau pom nyob rau ntawm qhov chaw maj mam. Slumps yog thaum ib lub pob zeb swb ntawm lub roob lossis pob zeb. Cov av nkos yog ua los ntawm huab cua pob zeb raug rub los ntawm lub ntiajteb txawj nqus thiab nws swb sai sai rau txoj kab nqes hav
Muaj ob hom kev txiav tawm hauv cov prokaryotes, rho-dependent termination thiab intrinsic termination (tseem hu ua Rho-independent termination). Ib qho Rho yam ua rau ntawm RNA substrate. Rho lub luag haujlwm tseem ceeb yog nws txoj haujlwm helicase, uas lub zog yog muab los ntawm RNA-dependent ATP hydrolysis
(1) Lub twj tso kua mis tau txav mus thiab qhov sib txuas (equipotential) xaim txuas ntxiv los ntawm kev sib txuas xav tau ntev. Thiab ntawm chav kawm kev sib txuas sab nraud ntawm lub thawv hlau mus rau cov hlua khi ntawm lub twj tso kua mis - hauv cov txiaj ntsig txuas cov grouding electrode Circuit Court mus rau equipotential bonding grid. Thiab cov xaim hauv av tsis tuaj yeem ua splice
Hauv kev ua lej, kev ua haujlwm f los ntawm qhov teeb tsa X rau aset Y yog qhov tseeb (tseem hu ua mus rau, lossis kev phais), yog tias rau txhua lub ntsiab lus y hauv codomain Y ntawm f, muaj tsawg kawg ib lub caij x hauv lub sau X ntawm f. f(x) = y
Electrons yeej nyob deb ntawm lub nucleus! Yog tias peb tuaj yeem ua kom pom qhov yooj yim tshaj plaws hydrogen atom kom nws cov nucleus (proton) yog qhov loj ntawm pob tawb, ces nws ib leeg electron yuav pom txog 2 mais deb
Yam rau mean free txoj kev Ceev: Raws li roj ceev nce, lub lwg me me ua los ze zog mus rau txhua lwm yam. Yog li ntawd, lawv feem ntau yuav khiav mus rau ib leeg, yog li txoj kev tsis pub dawb txo qis. Ua kom tus lej ntawm cov molecules lossis txo qhov ntim ua rau kom ceev kom nce
Lub synthesis ntawm silver(II) sulfate (AgSO4) nrog ib tug divalent silver ion es tsis txhob ntawm ib tug monovalent silver ion yog thawj zaug qhia nyob rau hauv 2010 los ntawm kev ntxiv sulfuric acid rau silver (II) fluoride (HF dim). Nws yog cov khoom dub uas decomposes exothermally ntawm 120 ° C nrog evolution ntawm oxygen thiab tsim cov pyrosulfate
Siab, kub, concentration thiab muaj cov catalysts tuaj yeem cuam tshuam tus nqi ntawm cov tshuaj tiv thaiv. Siab ntawm Gases. Rau cov tshuaj tiv thaiv nrog cov pa roj, lub siab muaj zog cuam tshuam rau cov tshuaj tiv thaiv tus nqi. Concentration of Solutions. Kub thiab txias. Exposed Surface Area. Catalysts thiab Activation Zog. Sensitivity rau lub teeb
Hauv cov qauv uas koj tau hais txog, P sawv cev rau lub zog hauv zos hauv qhov taw tes ntawm qhov siab h thiab qhov chaw ceev ntawm cov kua hauv zos yog v. Hu nws hydrostatic zoo li lub npe tsis zoo (vim cov kua txav mus), tab sis yog vim li cas. hais tias nws yog kev cai hu 'dynamical siab' lub sij hawm ρv2/2
Rutherford tus qauv ntawm lub atom (ESAAQ) Rutherford tau ua qee qhov kev sim uas ua rau muaj kev hloov pauv ntawm cov tswv yim nyob ib ncig ntawm lub atom. Nws tus qauv tshiab piav txog tus atom raws li ib tug me me, ntom, zoo them cov tub ntxhais hu ua ib tug nucleus surrounded los ntawm sib zog, tsis zoo them electrons
Vim li cas Iodination ntawm Benzene nyuaj? Txhawm rau kom txaus siab rau tus mob no, electron pub dawb pab pawg txuas nrog lub nplhaib phenyl ua rau nws ntau dua nucleophilic nyiam tshaj qhov tsis hloov Benzene. Tsis tas li ntawd, qhov electrophilicity ntawm halogen yog nce los ntawm kev siv Lewis acid catalyst li no ua rau nws ntau reactive
Kev hloov pauv tuaj yeem hloov pauv ib qho nucleotides lossis tag nrho cov chromosomes (Daim duab hauv qab), thiab lawv yog tib qho ntawm cov alleles tshiab. Qhov kawg ntawm qhov kev hloov pauv caj ces yog kev hloov pauv hloov pauv - hloov pauv hauv nucleotide sequences ntawm DNA
Valleys yog elongate kev nyuaj siab ntawm lub ntiaj teb nto. Cov hav yog feem ntau ntws los ntawm cov dej ntws thiab tej zaum yuav tshwm sim nyob rau hauv ib qho chaw tiaj tiaj los yog nruab nrab ntawm cov toj roob hauv pes. Cov kwj ha uas tsim los ntawm kev ua tectonic yog hu ua rift valleys
1 mole yog sib npaug rau 1 moles Hg, los yog 200.59 grams
Txoj kev kawm ntawm trigonometry suav nrog kev kawm li cas trigonometric ua haujlwm - xws li sine lossis cosine ntawm lub kaum sab xis, piv txwv li - tuaj yeem siv los ua haujlwm tawm lub kaum sab xis thiab qhov ntev ntawm ib qho duab tshwj xeeb. Lawv kuj yuav tsum tau muab cov dej num no los siv rau hauv cov kev ua ub ua no los pab cov tub ntxhais kawm txhim kho lawv cov kev txawj
Nws yog lub ntsiab lus feem ntau nyob rau hauv lub ntiaj teb crust thiab yog ib txwm cais tawm ntawm cov xuab zeb. Yog li ntawd, nyob rau hauv luv luv, silicon yog ib tug heev ntshiab, yooj yim mus use, thiab pheej yig semiconductor, zoo meej rau tam sim no loj computer nti kev lag luam
Polar molecule muaj daim ntawv cog lus dipoles, uas tsis tso tseg ib leeg. Yog li ntawd, CH3COOCH2CH3 muaj ob lub ntsiab lus (CO thiab CO) uas lawv daim ntawv cog lus dipoles tsis thim ib leeg. Yog li, ethyl acetate yog polarcompound
Nws yog vim tib yam uas koj tsis tuaj yeem ua amides los ntawm carboxylic acid thiab amine: cov amine deprotonates cov kua qaub. Carboxylate anion yog resonance-stabilized thiab carbonyl carbon tsis txaus electrophilic. Yog li, formic acid yuav tsis muab 2, 4 - DNP xeem
11 cua daj cua dub
Qhov loj ntawm Cu hauv grams tuaj yeem tau los ntawm kev sib npaug ntawm qhov loj hauv amu nrog Avogadro tus lej. Yog li ntawd, qhov loj ntawm 3.5 moles ntawm Cu yog 3.69 × 10 − 22 grams 3.69 × 10 − 22g ua
2836 yog sib npaug rau 79 vim 28 x 9 = 36 x 7 = 252
Ib qho tseem ceeb tshaj qhov cuam tshuam ntawm symmetry inphysics yog qhov muaj nyob ntawm txoj cai kev txuag. Rau txhua lub ntiaj teb txuas ntxiv symmetry - piv txwv li, kev hloov pauv ntawm aphysical system uas ua tib yam li txhua qhov chaw thiab txhua lub sijhawm - muaj qhov cuam tshuam rau lub sijhawm ywj pheej kom muaj nuj nqis: aconserved charge
Ib feem ntawm kev hais lus: adjective txhais 1: tsis txav; tseem. ib lub tsheb nyob ruaj ruaj synonyms: immobile, motionless, tseem, unmoving antonyms: txav cov lus zoo sib xws: calm, tsau, inactive, sedentary, sawv, zoo li qub, Tshuag-tseem
Lub plasma membrane yog selectively permeable; hydrophobic molecules thiab me me polar molecules tuaj yeem cuam tshuam los ntawm lipid txheej, tab sis ions thiab cov polar loj molecules tsis tuaj yeem. Integral membrane proteins pab kom ions thiab cov polar loj molecules hla los ntawm daim nyias nyias los ntawm passive los yog active thauj
Cov chromosomes ntawm ib tug eukaryotic cell muaj feem ntau ntawm DNA txuas mus rau ib tug protein core. Lawv kuj muaj RNA. DNA qhwv ib ncig ntawm cov proteins hu ua histones los tsim cov chav hu ua nucleosomes. Cov units no condense mus rau hauv ib tug chromatin fiber, uas condenses ntxiv mus tsim ib tug chromosome
Kev piav qhia Statistics. Kev piav qhia txheeb cais yog siv los piav qhia cov yam ntxwv ntawm cov ntaub ntawv hauv kev kawm. Lawv muab cov ntsiab lus yooj yim txog cov qauv thiab kev ntsuas. Ua ke nrog kev txheeb xyuas cov duab yooj yim, lawv tsim lub hauv paus ntawm txhua qhov kev soj ntsuam ntau ntawm cov ntaub ntawv
Life Science yog kev kawm txog lub neej hauv ntiaj teb. Hauv cov qib nrab, nws yog ib chav kawm biology introductory. Cov kab mob uas nyob hauv txhua biome tau yoog raws li cov dej nag thiab huab cua. Nyob rau hauv txhua biome, lub zog yog kis los ntawm ib lub cev mus rau lwm tus
Zoo li tag nrho cov echinoderms, echinoids muaj ib lub cev pob txha uas muaj calcitic daim hlau kos rau hauv lawv daim tawv nqaij (lawv lub cev pob txha yog sab hauv, zoo li peb li). Echinoids txav los ntawm txoj kev ntawm cov txha nraub qaum thiab nce thiab khi rau ntawm cov tawv tawv substrata los ntawm lawv cov raj-ko taw. Cov spines tseem muab cov ntsiab lus tseem ceeb ntawm kev tiv thaiv
Kev tshem tawm cov kua qaub (los yog tsim ntawm bicarbonate) los ntawm ob lub raum yog tsim nyog rau acid-base homeostasis. Phosphate yog cov tshuaj tso zis ntau tshaj plaws; Nws urinary excretion nce nrog acidosis
Cov txheej txheem siv cov txheej txheem yog qhov tseem ceeb rau kev qhia txog cov kua dej ntws thiab qhov ntim ntawm cov kua thiab cov pa roj, uas yog nyob ntawm qhov kub thiab txias. STP feem ntau yog siv thaum cov txheej txheem hauv xeev raug siv rau kev suav
Nws yuav luag ib txwm txhais tau tias 'thiab,' ob qho tib si hauv thiab sab nraud ntawm lej. * Lub cim no hu ua asterisk. Hauv kev ua lej, qee zaum peb siv nws txhais tau tias kev sib npaug, tshwj xeeb nrog cov khoos phis tawj. Piv txwv li, 5 * 3 = 5 x 3 = 15
Cov khoom uas nqa cov nqi ntawm cov xov hlau hauv ib lub voj voog yog cov khoom siv hluav taws xob mobile. Kev taw qhia hluav taws xob hauv ib lub voj voog yog los ntawm kev txhais cov kev taw qhia uas cov nqi kuaj tau raug thawb. Yog li, cov electrons tsis zoo no txav mus rau hauv cov kev taw qhia opposite lub teb hluav taws xob