Video: Dab tsi yog Munch mass flow hypothesis?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Txoj kev xav qab Mass flow hypothesis uas tseem hu ua siab flow hypothesis piav qhia txog kev txav ntawm cov kua txiv ntawm phloem, npaj los ntawm German physiologist Ernst Munch nyob rau hauv 1930. Phloem txav tshwm sim los ntawm loj txaus los ntawm qhov chaw ntawm qab zib mus rau qab zib dab dej.
Ib yam li ntawd, tib neeg nug, Munch hypothesis yog dab tsi?
Teb. Munch cov Pawg Flow Hypothesis yog txoj kev xav uas piav qhia txog qhov ntws ntawm cov khoom noj khoom haus los ntawm phloem los ntawm thaj chaw concentration mus rau thaj tsam qis dua. Lub zog yuav tsum tau txav cov khoom noj khoom haus organic downwards hauv phloem. Qhov no yog tshwm sim los ntawm qhov sib txawv ntawm cov peev xwm osmotic.
Ib sab saum toj no, koj txhais li cas lub hauv paus thiab lub dab dej yuav ua li cas lub siab ntws qhov kev xav ua haujlwm? Cov pressure flow hypothesis pab piav qhia tias cov piam thaj yaj mus li cas los ntawm qab zib qhov chaw rau qab zib dab dej . Thaum twg dab dej xav tau qab zib, lub siab qhov sib txawv ntawm cov qhov chaw thiab dab dej ua rau yaj cov suab thaj txav mus rau thaj tsam xav tau. Cov suab thaj ntau dhau tuaj yeem khaws cia rau hauv thaj chaw xws li cov hauv paus hniav siv tom qab.
Tsis tas li ntawd, leej twg muab huab hwm coj kev xav tau?
Ernst Munch
Cov qauv ua haujlwm siab ua haujlwm li cas?
Nyob rau hauv dav dav, lub siab flow qauv ua haujlwm zoo li no: ib tug siab concentration ntawm qab zib nyob rau hauv lub qhov chaw tsim ib tug tsawg solute peev xwm (Ψs), uas yog nqus dej mus rau hauv lub phloem los ntawm cov nyob ib sab xylem. Qhov no tsim qhov siab siab muaj peev xwm (Ψp), los yog siab turgor siab , v phloem.
Pom zoo:
Dab tsi yog qhov txawv ntawm huab hwm coj flow rate thiab volume flow rate?
Volume flow rate yog tus nqi ntawm cov ntim ntws los ntawm ib ntu ntu ntu hauv ib lub sijhawm. Ib yam li ntawd, qhov ntws ntws ntau yog qhov ntau ntawm cov pawg hla dhau qhov muab hla hauv ib lub sijhawm twg los tau
Dab tsi yog qhov null hypothesis thaum siv cov txheej txheem Anova?
Lub null hypothesis rau ANOVA yog tias qhov nruab nrab (tus nqi nruab nrab ntawm qhov sib txawv ntawm qhov sib txawv) yog tib yam rau txhua pawg. Lwm txoj kev los yog kev tshawb fawb hypothesis yog qhov nruab nrab tsis zoo ib yam rau txhua pawg. Txoj kev xeem ANOVA tsim ib qho F-statistic, uas yog siv los xam p-tus nqi
Dab tsi yog cov kauj ruam ntawm kev ntsuam xyuas hypothesis?
Tsib Kauj Ruam Hauv Kev Ntsuas Kev Ntsuas: Qhia qhov Null Hypothesis. Qhia qhov Alternative Hypothesis. Teem Qhov Tseem Ceeb Theem (a) Xam qhov Test Statistic thiab coj P-Value. Kos ib qhov xaus
Dab tsi yog formalized hypothesis?
Nyob rau hauv lub formalized hypothesis, ib tug tentative kev sib raug zoo yog hais. Piv txwv li, yog tias qhov zaus ntawm kev yeej yog cuam tshuam nrog zaus ntawm kev yuav daim pib rho npe. 'Tom qab ntawd' yog ua raws li kev twv seb yuav tshwm sim yog tias koj nce lossis txo qhov zaus ntawm kev yuav daim pib rho npe
Kev tshawb fawb hypothesis yog dab tsi?
Kev tshawb fawb kev xav yog ib qho tshwj xeeb, meej, thiab cov lus pom zoo los yog cov lus kwv yees hais txog qhov tshwm sim tau ntawm kev tshawb fawb tshawb fawb raws li cov cuab yeej tshwj xeeb ntawm cov pej xeem, xws li qhov sib txawv ntawm cov pab pawg ntawm ib qho kev sib txawv lossis kev sib raug zoo ntawm cov khoom sib txawv