Science 2024, Hlis ntuj nqeg

Tus dev muaj pes tsawg chromosomes? Karyotypes ntawm txawv tsiaj thiab nroj tsuag

Tsiaj hom tsiaj muaj ntau haiv neeg hauv karyotype. Ntxiv mus, tus naj npawb ntawm chromosomes nyob rau hauv lub nuclei ntawm lub hlwb ntawm ntau yam tsiaj tsis nyob ntawm seb lub complexity ntawm lub koom haum ntawm ib tug muaj sia nyob. Cov dev muaj pes tsawg chromosomes? Tus lej no puas txawv ntawm cov chromosomes ntawm hma, hma?. Kawg hloov kho: 2023-12-17 05:12

Tus miv muaj pes tsawg chromosomes? Genetics muab cov ntaub ntawv ntawm ntau yam genomes

Cov genomes ntawm cov kab mob sib txawv muaj cov lej sib txawv ntawm cov chromosomes. Qhov no siv tau rau ob qho tib si tsiaj thiab nroj tsuag. Qhov no yog vim tsis muaj ntau qhov sib txawv ntawm lub koom haum ntawm cov kab mob uas muaj sia nyob raws li qhov loj ntawm chromosomes thiab qhov loj ntawm DNA molecule, uas tuaj yeem nqa cov ntu ntev uas tsis muaj cov noob. Kawg hloov kho: 2023-12-17 05:12

Associative series raws li cov cuab yeej ntawm tus kws kho hlwb

Nyob rau hauv qhov kev nkag siab dav dav tshaj plaws, kev sib koom ua ke yog ib pawg ntawm cov ntsiab lus cuam tshuam rau ib leeg los ntawm qee qhov kev sib txawv. Kawg hloov kho: 2023-12-17 05:12

Dab tsi yog acid zog?

Yog tsis muaj cov kua qaub ntawm qee yam tshuaj, lub ntiaj teb nyob ib puag ncig peb tsis tuaj yeem ua tsis tau. Nyob rau hauv tsab xov xwm no peb yuav tham txog dab tsi lawv yog thiab yuav ua li cas lawv manifest lawv tus kheej. Kawg hloov kho: 2023-12-17 05:12

Lactic acid fermentation: thev naus laus zis thiab khoom siv tsim nyog. heterofermentative lactic acid fermentation

Xwm tso cai rau tus neeg kom txaus siab rau cov txiaj ntsig uas muaj nyob hauv nws. Tib lub sijhawm, tib neeg sim ua kom cov kev nplua nuj no nce ntxiv, tsim ib yam tshiab thiab kawm txog qhov tsis paub. Cov kab mob yog cov tsiaj me tshaj plaws ntawm qhov, uas tib neeg tau kawm los siv rau lawv tus kheej lub hom phiaj. Kawg hloov kho: 2023-12-17 05:12

Hom proteins, lawv cov haujlwm thiab cov qauv

Hom proteins hauv lub cev. Cov qauv, kev ua haujlwm thiab cov khoom ntawm polypeptide molecules. Denaturation thiab renaturation ntawm peptides, hydrolysis. Cov qauv ntawm cov protein molecules. Kawg hloov kho: 2024-01-02 17:01

Gauss theorem thiab superposition txoj cai

Gauss's theorem yog ib qho ntawm cov kev cai lij choj ntawm electrodynamics, structurally suav nrog hauv kev sib npaug ntawm lwm tus kws tshawb fawb zoo - Maxwell. Nws qhia txog kev sib raug zoo ntawm kev siv zog ntawm ob qho tib si electrostatic thiab electrodynamic teb dhau los ntawm qhov chaw kaw. Lub npe ntawm Karl Gauss suab nyob rau hauv lub ntiaj teb kev tshawb fawb tsis muaj tsawg nrov tshaj, piv txwv li, Archimedes, Newton los yog Lomonosov. Kawg hloov kho: 2023-12-17 05:12

Lub sijhawm ntawm lub zog: cov yam ntxwv ntawm lub cev tsis sib xws

Momentum hais txog qhov tseem ceeb, cov cai ntawm qhov xwm txheej. Nws yog ncaj qha ntsig txog cov khoom sib luag ntawm qhov chaw ntawm lub ntiaj teb lub cev uas peb txhua tus nyob. Kawg hloov kho: 2023-12-17 05:12

Carnot voj voog - lub hauv paus theoretical ntawm kev tsim thiab kev ua haujlwm ntawm tag nrho cov tshuab hluav taws xob sab hauv

Ntawm tag nrho cov txheej txheem thermodynamic cyclic, lub voj voog Carnot muaj qhov tshwj xeeb theoretical tseem ceeb thiab siv tau. Feem ntau nws yog hu ua unsurpassed, zoo, zoo tagnrho, thiab lwm yam. Thiab rau ntau, nws feem ntau zoo li yog ib yam dab tsi mysterious thiab incomprehensible. Txawm li cas los xij, yog tias tag nrho cov ntsiab lus raug muab tso rau kom raug, tag nrho cov kev yooj yim, kev txawj ntse thiab kev zoo nkauj ntawm qhov kev tsim kho no, uas tau pom los ntawm Fab Kis tus kws tshawb fawb thiab tus kws tshaj lij Sadi Carnot, yuav qhib tam sim ntawd. Kawg hloov kho: 2023-12-17 05:12

Real gases: deviation from ideality

Lo lus "gas tiag" ntawm cov kws tshuaj thiab cov kws kho mob yog siv los hu cov pa roj, cov khoom uas ncaj qha nyob ntawm lawv qhov kev sib cuam tshuam ntawm cov tshuaj. Txawm hais tias nws tuaj yeem nyeem tau hauv ib phau ntawv qhia tshwj xeeb uas ib qho mole ntawm cov tshuaj no nyob rau hauv ib txwm muaj mob thiab lub xeev khov kho nyob ib puag ncig ntawm 22.41108 litres. Kawg hloov kho: 2023-12-17 05:12

Protein rhuav tshem cov khoom hauv lub cev: nta, piav qhia thiab txoj hauv kev

Lub neej tsis muaj protein yog ua tsis tau. Qhov tseem ceeb ntawm cov proteins rau lub cev yog nyob rau hauv qhov tseeb tias lawv ua cov khoom siv los tsim cov hlwb, cov ntaub so ntswg thiab cov kabmob, tsim cov enzymes, feem ntau cov tshuaj hormones, hemoglobin thiab lwm yam khoom uas ua haujlwm tseem ceeb tshaj plaws hauv lub cev. Lub luag haujlwm ntawm cov proteins hauv lub cev kuj yog tias lawv koom nrog kev tiv thaiv lub cev los ntawm kev kis kab mob, thiab tseem txhawb nqa kev nqus ntawm cov vitamins thiab minerals. Kawg hloov kho: 2023-12-17 05:12

Tus lej ua ntu zus: lub tswv yim, khoom, txoj hauv kev teeb tsa

Tus lej ua ntu zus thiab nws qhov txwv tau yog ib qho teeb meem tseem ceeb tshaj plaws hauv kev ua lej thoob plaws hauv keeb kwm ntawm kev tshawb fawb no. Kev paub tshiab tas li, tsim cov theorems tshiab thiab cov ntaub ntawv pov thawj - tag nrho cov no tso cai rau peb los txiav txim siab txog lub tswv yim no los ntawm txoj haujlwm tshiab thiab los ntawm ntau lub kaum ntse ntse. Kawg hloov kho: 2024-01-02 17:01

Kev ua haujlwm ntawm enzymes. Lub luag haujlwm ntawm enzymes hauv lub cev

Enzymes ua haujlwm ntawm kev tswj hwm txhua qhov kev tshwm sim tshwm sim hauv lub cell. Cov kev sib txuas zoo kawg no muaj peev xwm ua kom nrawm ntau yam txheej txheem. Tag nrho cov ntawm lawv muaj cov protein ntau thiab muab faib ua pawg raws li lawv txoj haujlwm. Kawg hloov kho: 2023-12-17 05:12

Kev faib tawm ntawm Roses, yam ntxwv ntawm pawg

Pab pawg ntawm Roses, lawv cov kev faib tawm thiab cov neeg sawv cev yog cov kev kawm hauv tsev kawm ntawv. Lub paj yog tej zaum lub paj divine tshaj plaws (tsawg kawg ntawm thaj chaw ntawm peb lub teb chaws, thiab qhov tseeb tag nrho tom qab-Soviet qhov chaw). Cov nroj tsuag no tsis yog yam tsis muaj laj thawj hlub los ntawm yuav luag txhua tus poj niam. Kawg hloov kho: 2023-12-17 05:12

Cov khoom siv hluav taws xob: cov khoom siv, lawv qhov chaw thiab kev phom sij

Cov khoom siv hluav taws xob yog dab tsi? Dab tsi yog lub ntuj thiab tib neeg tsim cov khoom siv hluav taws xob? Lawv thauj li cas? Nyeem hauv tsab xov xwm. Kawg hloov kho: 2023-12-17 05:12

Atom thaj yeeb: duab, cim. Lub atom puas tuaj yeem muaj kev thaj yeeb nyab xeeb? Puas muaj kev thaj yeeb nyab xeeb muaj lub neej yav tom ntej?

Cov lus qhia "kev thaj yeeb nyab xeeb" tau nrov heev nyob rau hauv Soviet era. Lub sijhawm ntawd, cov kab lus no tau qhia txog kev kov yeej ntawm nuclear zog. Tab sis nws puas muaj lub neej yav tom ntej tam sim no? Thiab puas yog lub atom tiag tiag thiaj li nyob kaj siab lug?. Kawg hloov kho: 2023-12-17 05:12

Soviet physicist Igor Kurchatov: biography, nthuav tseeb, duab

Igor Kurchatov tau pab nws lub tebchaws kom nkag mus rau lub sijhawm thev naus laus zis ntawm ib nrab ntawm lub xyoo pua nees nkaum, tsim ob txoj kev loj hlob ntawm atomic zog hauv Soviet Union. Yog tias nws tau tsom mus rau kev tsim riam phom nkaus xwb, ces kev thaj yeeb nyab xeeb ntawm kev siv hluav taws xob nuclear (nuclear fais fab nroj tsuag) yuav tsis tshwm sim sai sai. Kawg hloov kho: 2023-12-17 05:12

Dab tsi yog qhov nqus tau ntawm hluav taws xob?

Kab lus no tau mob siab rau lub ntsiab lus ntawm cov tshuaj nqus hluav taws xob, ionizing hluav taws xob thiab lawv hom. Nws muaj cov ntaub ntawv hais txog ntau haiv neeg, xwm, qhov chaw, kev suav cov txheej txheem, units ntawm absorbed radiation koob thiab ntau ntxiv. Kawg hloov kho: 2023-12-17 05:12

Curie Pierre: kev ua tiav kev tshawb fawb. Nobel nqi zog hauv Physics rau Pierre thiab Marie Curie

Pierre Curie (Tsib Hlis 15, 1859 - Plaub Hlis 19, 1906) yog tus kws kho mob Fab Kis, tus thawj coj hauv crystallography, magnetism, piezoelectricity thiab radioactivity. Kawg hloov kho: 2023-12-17 05:12

Marie Curie. Maria Sklodowska-Curie: biography. Marie Curie University hauv Lublin

Txawm thaum pib ntawm lub xyoo pua 20th, ua ntej Tsov Rog Thoob Ntiaj Teb thib 1, thaum lub sijhawm ntsuas thiab tsis nrawm, cov poj niam hnav corsets, thiab cov poj niam uas twb tau sib yuav yuav tsum tau ua raws li kev coj ncaj ncees (kev tu vaj tse thiab nyob hauv tsev), Curie Maria tau txais ob qhov khoom plig Nobel: xyoo 1908 - hauv physics, xyoo 1911 - hauv chemistry. Kawg hloov kho: 2023-12-17 05:12

Radiant heat transfer: tswvyim, xam

Ntawm no tus nyeem ntawv yuav pom cov ntaub ntawv dav dav txog qhov hloov pauv cua sov yog dab tsi, thiab tseem yuav txiav txim siab nthuav dav qhov tshwm sim ntawm radiant tshav kub hloov, nws ua raws li qee txoj cai, cov yam ntxwv ntawm cov txheej txheem, cov qauv ntawm cov cua sov, kev siv. ntawm tshav kub hloov los ntawm tus txiv neej thiab nws cov kev kawm nyob rau hauv cov xwm. Kawg hloov kho: 2024-01-02 17:01

X-ray fluorescence tsom xam yog dab tsi?

XRF (X-ray fluorescence tsom xam) yog ib txoj hauv kev tshawb xyuas lub cev uas ncaj qha txiav txim siab yuav luag txhua yam tshuaj hauv cov hmoov, kua thiab cov khoom siv. Kawg hloov kho: 2024-01-18 04:01

Academician Gubkin Ivan Mikhailovich: biography, achievements, khoom plig thiab nthuav tseeb

Cov haujlwm ntawm tus kws tshawb fawb txog kev tsim cov roj hauv nruab nrab ntawm Volga thiab Urals tau txais txiaj ntsig nrog qhov tseem ceeb theoretical thiab tswv yim lub ntsiab lus. Nyob rau hauv thaum ntxov 20s ntawm lub xyoo pua XX, Ivan Mikhailovich ua ib lub tswv yim rau ib tug yuav tsum tau kawm kom ntxaws ntxaws ntawm lub geology ntawm cheeb tsam no. Kawg hloov kho: 2023-12-17 05:12

Kev Kawm Tub Ntxhais Kawm yog dab tsi? Tswv yim, txoj kev, teeb meem ntawm kev tsim thiab kev loj hlob

Nyob rau hauv kev puas siab puas ntsws niaj hnub no muaj tag nrho cov kev mob siab rau kev kawm txog poj niam txiv neej. Kev kawm txog qhov sib txawv ntawm cov neeg sawv cev ntawm ob qho tib si poj niam txiv neej, raws li cov tswv cuab ntawm zej zog, yuav tsum ua kom muaj kev nkag siab zoo ntawm cov txiv neej thiab poj niam. Kawg hloov kho: 2023-12-17 05:12

Kev xav ntawm tsoomfwv hauv nroog: rooj. Qhov zoo thiab qhov tsis zoo ntawm cov kev xav ntawm kev tswj hwm tus kheej hauv zos. Txoj kev xav ntawm lub zej zog dawb ntawm kev tswj hw

Txoj kev xav ntawm tsoomfwv tus kheej hauv nroog muab cov zaub mov txawv rau kev sib koom ua ke ntawm cov nroog thiab lub xeev. Kawg hloov kho: 2023-12-17 05:12

Cov ntsiab cai ntawm ecology: kev cai lij choj, teeb meem thiab kev ua haujlwm

Raws li cov hauv paus ntsiab lus ntawm ecology, nws yog qhov tsim nyog xaiv cov kev cai thiab cov cai uas yuav tso cai rau kev tsim cov kev paub txog kev tshawb fawb, kev ua haujlwm thiab kev nthuav dav. Txoj hauv kev no yuav tso cai rau peb los tsim cov txheej txheem rau tib neeg kev ua haujlwm txhawm rau ua raws li kev coj noj coj ua ecological. Kawg hloov kho: 2023-12-17 05:12

Cov haujlwm dav dav ntawm kev tshawb fawb txog kev tshawb fawb. Txoj kev forensic. Kev ntsuas los tiv thaiv kev ua phem

Forensic science yog kev tshawb fawb ntawm kev txhais tau tias, kev siv tswv yim thiab cov txheej txheem siv los ua cov kev nqis tes ua los ntawm txoj cai lij choj kev ua txhaum cai txhawm rau txheeb xyuas, sau, kho, tshawb fawb, ntsuas thiab siv cov pov thawj txhawm rau txhawm rau txheeb xyuas thiab tiv thaiv kev ua txhaum cai. Kawg hloov kho: 2023-12-17 05:12

Forensic methodology rau kev tshawb nrhiav kev ua txhaum cai

Cov txheej txheem forensic rau kev tshawb nrhiav kev ua txhaum cai yog txheej txheej ntawm cov tswv yim tshawb fawb thiab cov lus pom zoo tsim los ntawm lawv lub hauv paus rau cov tub ceev xwm uas tau tshaj tawm thiab tawm tsam kev ua txhaum cai ntawm ib pawg. Cia peb xav txog nws hauv kev nthuav dav ntxiv. Kawg hloov kho: 2023-12-17 05:12

Txoj kev tshawb fawb tshwj xeeb: nta thiab piav qhia

Txoj kev tshwj xeeb ntawm kev tshawb fawb tshawb fawb yog ib txoj hauv kev paub txog lub hom phiaj kev muaj tiag. Cov txheej txheem no suav nrog qee cov txheej txheem, kev ua, kev ua haujlwm. Muab rau hauv tus account cov ntsiab lus ntawm cov khoom nyob rau hauv kev xav, txoj kev ntawm kev sib raug zoo thiab humanitarian kev tshawb fawb thiab natural science yog txawv. Kawg hloov kho: 2023-12-17 05:12

Chaw Nres Nkoj Thoob Ntiaj Teb (ISS)

Lub Chaw Chaw Thoob Ntiaj Teb Thoob Ntiaj Teb yog qhov tshwm sim los ntawm kev sib koom ua haujlwm ntawm cov kws tshaj lij los ntawm ntau thaj chaw los ntawm kaum rau lub tebchaws ntawm lub ntiaj teb (Russia, Tebchaws USA, Canada, Nyiv, xeev uas yog cov tswvcuab ntawm European Commonwe alth). Qhov project grandiose, uas nyob rau hauv 2013 ua kev zoo siab rau lub kaum tsib hnub tseem ceeb ntawm qhov pib ntawm nws qhov kev siv, embodies tag nrho cov achievements ntawm kev xav ntawm peb lub sij hawm. Kawg hloov kho: 2023-12-17 05:12

Systems think - yog dab tsi? Cov yam ntxwv thiab cov yam ntxwv tseem ceeb

Systems xav yog ib qho ntawm cov ntsiab lus tshiab niaj hnub siv los ntawm ntau tus thawj tswj hwm, kws kho hlwb, tus kws qhia kev loj hlob ntawm tus kheej thiab lwm tus kws qhia. Nws qib qhia txog kev ceev thiab kev txiav txim siab zoo, yog li qhov ntsuas no tau kawm thaum lub sijhawm ntiav ua tus yam ntxwv tseem ceeb ntawm tus neeg ua haujlwm yav tom ntej. Kawg hloov kho: 2023-12-17 05:12

Buffer system: kev faib tawm, piv txwv thiab cov txheej txheem ntawm kev ua

Acid-base tshuav nyiaj li cas ua lub luag haujlwm loj hauv kev ua haujlwm ntawm tib neeg lub cev. Cov ntshav ncig hauv lub cev yog qhov sib xyaw ntawm cov cell muaj sia nyob hauv cov kua dej. Thawj kab ntawm kev tiv thaiv uas tswj cov qib pH hauv cov ntshav yog qhov tsis muaj qhov system. Kawg hloov kho: 2024-01-02 17:01

Competitive inhibition: txhais, nta thiab piv txwv

Txhua yam tshuaj lom neeg biochemical tshwm sim hauv lub cev yog raug tswj xyuas tshwj xeeb, uas yog ua los ntawm kev ua kom muaj zog lossis inhibitory cuam tshuam ntawm kev tswj cov enzymes. Cov yav tas feem ntau yog nyob rau thaum pib ntawm chains ntawm metabolic transformations thiab txawm pib ib tug ntau theem txheej txheem los yog qeeb nws. Qee qhov kev tawm tsam ib leeg kuj raug tswj hwm. Kev sib tw inhibition yog ib qho ntawm cov txheej txheem tseem ceeb los tswj cov kev ua haujlwm catalytic ntawm enzymes. Kawg hloov kho: 2024-01-02 17:01

Lub qhov muag. Txheej txheej ntawm lub qhov muag

Muaj 2 tus ncej hauv lub qhov muag: posterior thiab anterior. Qhov kev ncua deb ntawm lawv nruab nrab yog 24 mm. Nws yog qhov loj tshaj plaws ntawm lub qhov muag. Feem ntau ntawm cov tom kawg yog lub hauv paus. Qhov no yog cov ntsiab lus pob tshab uas nyob ib puag ncig los ntawm peb lub plhaub. Nws muaj dej lom zem, lens thiab vitreous lub cev. Kawg hloov kho: 2023-12-17 05:12

Chitin yog Chitin nyob rau hauv lub cell phab ntsa

Tsis yog txhua tus paub tias chitin yog dab tsi. Ob peb tseem nco ntsoov cov ntaub ntawv hais txog lub ntsiab lus no los ntawm cov lus qhia txog biology. Nws tshwm sim nyob qhov twg? Vim li cas lub cev xav tau? Cov lus teb rau cov lus nug no tau nthuav tawm hauv kab lus. Kawg hloov kho: 2023-12-17 05:12

Cosmonaut Training Center. Yu.A. Gagarina: chaw nyob, duab

Cov kab lus hais txog ib qho ntawm feem ntau kaw thiab nthuav cov ces kaum nyob ze ntawm lub peev ntawm Lavxias Federation - Lub Hnub Qub City. Kawg hloov kho: 2023-12-17 05:12

Txoj kev thauj cov khoom hla ntawm daim nyias nyias. Hom kev thauj mus los ntawm cov khoom siv thoob plaws hauv daim nyias nyias

Cell yog ib chav tsev ntawm txhua lub neej ntawm peb lub ntiaj teb thiab qhib qhov system. Qhov no txhais tau tias nws lub neej yuav tsum muaj kev sib pauv tas li ntawm cov teeb meem thiab lub zog nrog ib puag ncig. Qhov kev pauv no yog nqa tawm los ntawm daim nyias nyias - lub ntsiab ciam teb ntawm tes, uas yog tsim los khaws nws txoj kev ncaj ncees. Nws yog los ntawm daim nyias nyias uas cellular metabolism yog nqa tawm thiab nws mus rau ntawm lub concentration gradient ntawm ib yam khoom, los yog tawm tsam nws. Kev thauj mus los thoob plaws cytoplasmic membrane yog txheej txheem nyuaj. Kawg hloov kho: 2023-12-17 05:12

Tshuaj lom neeg sib npaug - cov ntaub ntawv kho mob ntawm cov tshuaj tiv thaiv tshuaj

Cov tshuaj tiv thaiv kab mob sib npaug yog cov ntaub ntawv schematic ntawm tag nrho cov txheej txheem nyuaj ntawm kev tsim cov tshuaj tshiab los ntawm kev decomposition, ua ke, hloov pauv thiab pauv. Nws kuj muab cov ntaub ntawv zoo thiab muaj nuj nqis txog cov tshuaj reactants thiab cov khoom siv tshuaj tiv thaiv. Kawg hloov kho: 2024-01-02 17:01

Lub qhov quav ntev npaum li cas hauv cov menyuam yaus thiab cov neeg laus? Lub qhov quav yog dab tsi thiab nws ua haujlwm li cas?

Qhov quav yog dab tsi. Nws muaj nuj nqi. Qhov ntev ntawm lub qhov quav hauv cov neeg laus thiab menyuam yaus. Kab mob thiab qhov tsis xws luag ntawm qhov quav. Kawg hloov kho: 2023-12-17 05:12

Dab tsi yog cov protein: cov lus los ntawm ntau lab tus tsiaj ntawv

Txhua lub xov tooj ntawm tib neeg lub cev yog qhov tshwj xeeb. Thiab tus kheej no yog muab los ntawm cov proteins. Cov proteins yog dab tsi? Lawv kuj hu ua proteins. Lawv yog cov sib tw hauv qhov nyuaj ntawm cov molecules uas ua rau cov khoom muaj protein ntau. Tshwj xeeb tshaj yog cov protein ntau hauv cov plaub hau, tawv nqaij, pob txha, rau tes thiab cov leeg nqaij. Tab sis tsis yog tag nrho, cov proteins yog ib feem ntawm cov tshuaj hormones, neurotransmitters, tshuaj tiv thaiv kab mob, enzymes, thiab cov pa oxygen hu ua hemoglobin. Kawg hloov kho: 2023-12-17 05:12