Nyob rau sab qaum teb Hemisphere, lub hnub ib txwm sawv nyob rau sab hnub tuaj thiab teev nyob rau sab hnub poob. Thaum tav su, nws looms nyob nruab nrab ntawm lub qab ntug thiab ncaj qha rau sab qab teb. Qhov ntawd txhais tau tias thaum koj ntsib lub hnub thaum tav su, taug kev ncaj nraim mus rau nws yuav coj koj mus rau sab qab teb. Taug kev nrog lub hnub ntawm koj nraub qaum txhais tau tias koj mus rau sab qaum teb
Lub puab tsaig sab saud yog qhov me me, nkhaus sab hauv, thiab yog siv los ntsuas qhov ntev ntawm cov khoom hollow xws li lub tog raj kheej thiab lwm yam. Ib qho vernier calipers uas tseem hu ua Slide Calipers
Dab tsi yog Qhov Ua Ntej Ua Ntej? Yog tias qhov kev ntsuam xyuas caj ces tsis suav nrog tus txiv neej kuaj, ces qhov tshwm sim ntawm leej txiv yuav poob mus rau 0%. Yog tias kev kuaj DNA tsis suav nrog tus txiv neej kuaj, qhov tshwm sim ntawm leej txiv yuav nce mus rau ntau dua 99%
Lithium Properties Lithium muaj qhov melting point ntawm 180.54 C, kub taw tes ntawm 1342 C, qhov tshwj xeeb lub ntiajteb txawj nqus ntawm 0.534 (20 C), thiab valence ntawm 1. Nws yog lub lightest ntawm cov hlau, nrog ib tug ceev kwv yees li ib nrab ntawm cov dej. . Nyob rau hauv cov xwm txheej zoo tib yam, lithium yog qhov tsawg kawg nkaus ntawm cov khoom siv
Cells faib thiab tsim nyob rau hauv ob txoj kev, mitosis thiab meiosis. Mitosis ua rau ob lub hlwb zoo tib yam, thaum meiosis tshwm sim hauv plaub lub hlwb. Hauv qab no peb qhia txog qhov sib txawv ntawm cov yuam sij thiab qhov zoo sib xws ntawm ob hom kev faib ntawm tes
A rational equation Ib qho kev sib npaug uas muaj tsawg kawg yog ib qho kev qhia rational. yog ib qho kev sib npaug uas muaj tsawg kawg yog ib qho kev qhia rational. Kev daws qhov sib npaug sib npaug los ntawm kev tshem cov feem ntau los ntawm kev sib faib ob sab ntawm qhov sib npaug los ntawm qhov tsawg tshaj plaws denominator (LCD). Piv txwv 1: daws: 5x− 13 = 1x 5 x − 1 3 = 1x
Taw qhia. Nyob rau hauv histology los yog ib lub chaw kuaj mob pathology, mounting yog txheej txheem kawg hauv koob uas xaus nrog kev npaj histological tas li ntawm lub rooj, zoo tom qab cov ntaub so ntswg ua thiab staining
Koj tuaj yeem daws tau qhov concentration lossis ntim ntawm cov concentrated lossis dilute tov siv qhov sib npaug: M1V1 = M2V2, qhov twg M1 yog qhov concentration hauv molarity (moles / Litres) ntawm cov tshuaj concentrated, V2 yog qhov ntim ntawm cov tshuaj concentrated, M2 yog qhov concentration hauv molarity ntawm dilute tov (tom qab
Gamma rays muaj lub zog siab tshaj plaws, qhov luv tshaj wavelengths, thiab cov zaus siab tshaj plaws
Qhov chaw saum npoo yog qhov sib npaug ntawm thaj chaw ntawm txhua lub ntsej muag (lossis qhov chaw) ntawm 3D duab. Ib lub cuboid muaj 6 lub ntsej muag. Txhawm rau nrhiav thaj chaw saum npoo ntawm lub cuboid, ntxiv cov cheeb tsam ntawm tag nrho 6 lub ntsej muag. Peb tseem tuaj yeem sau npe qhov ntev (l), dav (w), thiab qhov siab (h) ntawm qhov prism thiab siv cov qauv, SA = 2lw + 2lh + 2hw, txhawm rau nrhiav qhov chaw nyob
Parenchyma hlwb yog cov cog cell ntau tshaj plaws. Collenchyma hlwb muab kev txhawb nqa rau cov nroj tsuag loj hlob. - lawv muaj zog thiab hloov tau (tsis muaj lignin) - cov hlua celery yog cov hlua ntawm collenchyma. - lawv muaj cov phab ntsa tuab tsis sib xws
Muaj peb hom DNA Mutations: kev hloov pauv hauv paus, tshem tawm thiab ntxig. Ib lub hauv paus hloov pauv yog hu ua point mutations, nco qab qhov kev hloov pauv ntawm Glu -----> Val uas ua rau mob qog nqaij hlav. Point mutations yog hom kev hloov pauv ntau tshaj plaws thiab muaj ob hom
Cov kauj ruam yooj yim rau kev daws cov teeb meem lo lus Nyeem qhov teeb meem. Pib los ntawm kev nyeem qhov teeb meem kom zoo. Txheeb xyuas thiab sau qhov tseeb. Tshawb xyuas seb qhov teeb meem nug yog dab tsi. Tshem tawm cov ntaub ntawv tshaj tawm. Ua tib zoo saib xyuas cov ntsuas ntsuas. Kos ib daim duab. Nrhiav lossis tsim ib qho qauv. Nrog rau kev siv
Qhov tseeb ntawm kev ntsuas hluav taws xob txhais tau hais tias kaw qhov ntsuas qhov ntsuas yog rau tus nqi tseeb ntawm qhov ntsuas ntsuas. Txawm li cas los xij, 10.0 volts ntsuas ntawm 100-V nplai ntawm tib lub ntsuas hluav taws xob tuaj yeem nyeem ntawm 7 V thiab 13 V, lossis ± 30% ntawm qhov kev nyeem ntawv tiag tiag, thaum lub ntsuas ntsuas yog technically inspecifications
Peb lub rooj qhia rau peb, rau ib tug degree ntawm kev ywj pheej, dab tsi tus nqi yog dab tsi 5% ntawm cov tis tshaj. Piv txwv li, thaum df = 5, tus nqi tseem ceeb yog 2.57. Qhov ntawd txhais tau hais tias 5% ntawm cov ntaub ntawv nyob dhau 2.57 - yog li yog tias peb suav t statistic sib npaug lossis ntau dua 2.57, peb tuaj yeem tsis lees paub peb qhov kev xav tsis zoo
Cottonwoods muaj ntau daim duab peb sab lossis lub plawv zoo li nplooj ntau dua li cov paj ntoo, thiab cov npoo yog me ntsis serrated. Poplar nplooj muaj ntau oval mus rau oval-lance-zoo li nplooj. Cottonwoods kuj siab dua, nyob nruab nrab ntawm 80 thiab 200 ko taw, qhov balsam poplar tsuas yog 80 feet thiab dub poplar tsuas yog 40 txog 50
Nyob rau hauv chemistry, ib tug colloid yog ib tug sib tov nyob rau hauv uas ib yam khoom ntawm microscopically dispersed insoluble los yog soluble hais raug tshem tawm thoob plaws lwm yam khoom
Ionic yog ua tiav DAWB thiab OpenSource Yog tias koj yuav tsum them $ 1000s rau daim ntawv tso cai tsuas yog pib siv cov qauv no ces ntau tus neeg tsim khoom lossis cov neeg tsim tawm yuav tsis muaj peev xwm pib tau
Cov hemlock hom hu ua 'Tsuga sieboldii' yog hom ntoo coniferous uas muaj lub ntsiab lus dawb ceev toadherents ntawm qee qhov kev ntseeg pagan thiab cim kev tiv thaiv thiab kho. Muaj ob peb hom nroj tsuag uas dais lub npe hemlock; txhua tus yuav muaj nws tus kheej lub ntsiab lus
Ntau tshaj 1 lab seabirds thiab 100,000 hiav txwv mammals raug tua los ntawm cov pa phem txhua xyoo
Lwm hom siv lub sensor nyob rau hauv lub tshuab roj twj tso kua mis. Feature: Tsis Siv Neeg Idle Control txo lub cav ceev thaum tag nrho cov khoom hluav taws xob tau raug muab tua thiab cia li rov qab mus rau qhov ntsuas ceev thaum thauj khoom tig rov qab. Cov txiaj ntsig: txo cov roj noj
Daim ntawv hais txog tus yam ntxwv zoo ntawm tsob ntoo, whereas qia taper yog qhov txo qis hauv qia txoj kab uas hla nrog nce qhov siab ntawm av theem mus rau tsob ntoo
Lub nceeg vaj Protista muaj ib leeg-celled eukaryotes nyob rau hauv sib piv rau cov kab mob uas yog cov piv txwv ntawm prokaryotic cell hom. Protists yog ib pawg ntawm cov kab mob sib txawv uas yog unicellular lossis multicellular tsis muaj cov ntaub so ntswg tshwj xeeb
Cov tib neeg tsim cov pej xeem; pejxeem tsim ib hom; ntau hom thiab lawv cov kev sib cuam tshuam ua ib lub zej zog; thiab ntau hom thiab lawv cov kev sib cuam tshuam ua rau ecosystems thaum koj suav nrog cov yam ntxwv abiotic. Qhov no yog lub hierarchy ntawm ecology
Tsis muaj cov lej loj dua li qhov tsis muaj tseeb, tab sis qhov ntawd tsis txhais tau tias infinity yog tus lej loj tshaj, vim nws tsis yog tus lej txhua. Rau tib yam vim li cas, infinity tsis yog txawm los yog khib. Lub cim rau infinity zoo li tus lej 8 pw ntawm nws sab:
Conservative quab yuam, nyob rau hauv physics, ib tug quab yuam, xws li lub gravitational quab yuam ntawm lub ntiaj teb no thiab lwm yam loj, uas nws ua hauj lwm tsuas yog txiav txim los ntawm qhov kawg displacement ntawm cov khoom ua raws li. Lub zog khaws cia, lossis lub zog muaj peev xwm, tuaj yeem txhais tau tsuas yog rau kev saib xyuas
Alpha hais muaj hluav taws xob vim yog cov protons. Thaum lawv txav mus los ntawm qhov teeb meem, lawv tsis tu ncua cuam tshuam nrog lwm cov khoom siv hluav taws xob, xws li electrons. Cov txheej txheem no hloov cov lus tsa suab (lub zog) ntawm alpha particle mus rau cov hluav taws xob, tiag tiag khob cov electrons dawb hauv cov txheej txheem
Txhua qhov sib xyaw ntawm atoms yog ib qho molecule. Ib qho kev sib txuas yog ib qho molecule ua los ntawm atoms los ntawm cov khoom sib txawv. Tag nrho cov tebchaw yog molecules, tab sis tsis yog tag nrho cov molecules yog cov tebchaw. Hydrogen gas (H2) yog ib qho molecule, tab sis tsis yog ib qho kev sib xyaw vim nws tsuas yog ua los ntawm ib lub ntsiab lus xwb
Nws yog ib qho tseem ceeb heev uas cov kev tshawb fawb tuaj yeem rov ua dua, vim tias nws txhais tau tias lwm tus neeg tshawb fawb tuaj yeem sim cov kev tshawb fawb ntawm kev tshawb fawb. Replicability ua rau cov neeg tshawb nrhiav ncaj ncees thiab tuaj yeem ua rau cov neeg nyeem kev ntseeg siab hauv kev tshawb fawb. Yog tias qhov kev tshawb fawb tau rov ua dua, tom qab ntawd cov lus xaus tsis tseeb tuaj yeem pom tias yog qhov tsis yog
Cell txoj kev xav tau tsim nyob rau hauv 1839. Qhov no feem ntau yog muab rau Matthias Schleiden thiab Theodor Schwann. Txawm li cas los xij, ntau lwm tus kws tshawb fawb xws li Rudolf Virchow tau pab txhawb txoj kev xav
Leej twg ntawm cov biomes hauv qab no puas yog qhov climatograph feem ntau yuav sawv cev? Kuj hu ua steppe lossis prairie, qhov biome no tau tsim dav siv rau kev ua liaj ua teb vim nws cov av nplua nuj nyob hauv cov av
Los ntawm kev xav txog ob yam no, peb tuaj nrog Gibbs Free Energy sib npaug los kwv yees seb qhov kev cuam tshuam yuav tshwm sim li cas lossis tsis ua. Yog tias Gibbs Dawb Zog yog qhov tsis zoo, ces cov tshuaj tiv thaiv yog tshwm sim, thiab yog tias nws yog qhov zoo, ces nws tsis yog tshwm sim
helium Tsis tas li ntawd, cov roj twg uas ze tshaj rau qhov zoo tshaj plaws? Helium Tsis tas li, koj yuav qhia li cas yog tias lub roj yuav coj zoo? Ib zoo tagnrho gas muaj molecules ntawm xoom loj thiab xoom intermolecular rog. Yog qhov tiag gas yog tsis tshua muaj siab thiab tsim nyog siab kub ces nws yuav coj zoo li ib zoo tagnrho gas hauv uas peb cov khoom siv ntsuas yuav tsis yog qhov tseeb txaus los ntsuas qhov sib txawv.
Kuv yuav rov pib dua kuv qhov ntsuas li cas? Tshem tag nrho cov roj teeb ntawm koj qhov ntsuas tom qab. Tawm ntawm qhov ntsuas yam tsis muaj nws cov roj teeb li 10 feeb. Reinsert cov roj teeb. Muab koj cov nplai rau ntawm lub tiaj tiaj, txawm tias tsis muaj ntaub pua plag. Nias qhov nruab nrab ntawm qhov ntsuas nrog ib ko taw kom nws sawv. '0.0' yuav tshwm sim ntawm qhov screen
Lub planetary qauv hais tias lub atom yog feem ntau qhov chaw nrog ib tug me me, heev ntom, Centralized, zoo them nucleus thiab tsis zoo them electrons nyob rau hauv ib lub zog ntau ntau (orbits) nyob rau hauv lub atomic qhov chaw
Lub blueshift yog ib qho kev txo qis hauv wavelength (nce hauv lub zog), nrog rau qhov sib txuas ntawm qhov zaus, ntawm ib qho hluav taws xob nthwv dej; qhov opposite nyhuv yog hu ua redshift. Nyob rau hauv lub teeb pom kev, qhov no hloov xim los ntawm liab kawg ntawm lub spectrum mus rau xiav kawg
Lub stratosphere yog qhuav heev; huab cua muaj me ntsis dej vapor. Vim li no, ob peb huab tau pom hauv txheej no; yuav luag tag nrho cov huab tshwm sim nyob rau hauv qis, ntau humid troposphere. Polar stratospheric huab (PSCs) yog qhov zam. PSCs tshwm nyob rau hauv qis stratosphere ze ntawm tus ncej hauv lub caij ntuj no
Ib qho outcrop uas muaj ob peb kab rov tav sedimentary pob zeb txheej sawv cev rau lub sij hawm ntsug-series ntawm geological txheej xwm. Cov textures ntawm txhua txheej sedimentary qhia peb txog ib puag ncig uas muaj nyob rau ntawm qhov chaw ntawd thaum txheej txheej tsim
Raws li cov limestone dissolves, pores thiab kab nrib pleb yog loj thiab nqa cov dej acidic ntau dua. Sinkholes yog tsim thaum cov av saum npoo av ntog los yog tog rau hauv cov kab noj hniav los yog thaum cov khoom nto yog nqa mus rau hauv cov voids
Upper mantle khoom uas tau tuaj rau saum npoo yog tsim los ntawm 55% olivine, 35% pyroxene thiab 5 mus rau 10% ntawm calcium oxide thiab aluminium oxide minerals xws li plagioclase, spinel lossis garnet, nyob ntawm qhov tob