Video: Dab tsi yog sigmoid nkhaus qhia?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Hauv nws daim ntawv yooj yim tshaj plaws, sigmoid yog ib tug sawv cev ntawm lub sij hawm (nyob rau hauv kab rov tav axis) thiab kev ua si (ntawm ntsug axis). Qhov xav tsis thoob ntawm qhov no nkhaus yog hais tias nws yeej piav txog feem ntau phenomena, tsis hais hom twg. Qhov tshwm sim ntsib kev loj hlob. Nws tsoo theem kom loj hlob uas qhov kev loj hlob qeeb, thiab tom qab ntawd nres.
Raws li txoj cai, qhov kev loj hlob ntawm sigmoid yog dab tsi?
S-puab txoj kev loj hlob nkhaus ( sigmoid txoj kev loj hlob nkhaus ) Ib tug qauv ntawm kev loj hlob nyob rau qhov twg, hauv ib puag ncig tshiab, cov pejxeem ntom ntom ntawm cov kab mob nce maj mam pib, nyob rau theem zoo; tom qab ntawd nce nrawm dua, nce mus rau qhov nthuav dav kev loj hlob tus nqi raws li nyob rau hauv J-shaped nkhaus ; tab sis tom qab ntawd poob rau hauv qhov tsis zoo
dab tsi yog theem ntawm nkhaus sigmoid? Cov kev loj hlob nkhaus ntawm tej kab mob tshwm sim muaj ib tug sigmoidal nkhaus uas muaj xws li lag theem, cav theem, nyob ruaj khov theem thiab tuag theem. Cov theem lag yog theem hloov pauv rau cov kab mob uas lawv suav nrog lawv tus kheej rau cov xwm txheej ib puag ncig tshiab tau muab. Cov kev loj hlob yog qeeb ntawm theem no.
Tsuas yog li ntawd, Handy's sigmoid nkhaus qhia li cas?
Raws li Ua tau zoo , cov Sigmoid nkhaus zoo sawv cev rau lub neej voj voog ntawm ntau yam, xws li cov khoom thiab kev ua haujlwm. Lub neej voj voog muaj peb ntu sib txawv - kev kawm, kev loj hlob thiab kev poob qis. Cov khoom lag luam lossis qhov project xav tau kev txhawb nqa los ntawm lub sijhawm sim thiab kawm.
Dab tsi yog sigmoid muaj nuj nqi siv rau?
Qhov laj thawj tseem ceeb vim li cas peb siv kev ua haujlwm sigmoid yog vim nws muaj nyob nruab nrab ntawm (0 txog 1). Yog li ntawd, nws yog tshwj xeeb siv rau cov qauv uas peb yuav tsum kwv yees qhov tshwm sim raws li qhov tso tawm. Txij li qhov tshwm sim ntawm txhua yam muaj nyob nruab nrab ntawm qhov ntau ntawm 0 thiab 1, sigmoid yog txoj kev xaiv. Cov muaj nuj nqi yog txawv.
Pom zoo:
Dab tsi nkhaus titration qhia rau koj?
Kev ntsuas cov ntsiab lus yog cov phiaj xwm qhia pom kev hloov pauv ntawm pH ntawm kev daws hauv lub raj mis conical raws li cov tshuaj reagent tau ntxiv los ntawm burette. Ib txoj kab titration tuaj yeem siv los txiav txim siab: 2) pH ntawm kev daws ntawm qhov sib npaug sib npaug yog nyob ntawm qhov muaj zog ntawm cov kua qaub thiab lub zog ntawm lub hauv paus siv hauv kev ntsuas
Dab tsi yog kev hloov pauv sab laug hauv qhov nkhaus sib cais oxyhemoglobin hu ua?
Cov xwm txheej no hloov pauv lossis hloov pauv qhov nkhaus ntawm kev sib cais oxyhemoglobin. Kev hloov pauv sab xis qhia tias hemoglobin hauv kev tshawb fawb tau txo qis kev nyiam rau oxygen. Kev ua haujlwm sab laug ntawm txoj kab nkhaus yog ib qho cim ntawm hemoglobin kev sib raug zoo ntxiv rau oxygen (piv txwv li ntawm lub ntsws)
4 yam nkhaus nkhaus ntawm tus nqaj qaum yog dab tsi?
Cov pob txha no, hu ua vertebrae, tau muab faib ua tsib thaj chaw: ncauj tsev menyuam, thoracic, lumbar, sacral, thiab coccyx. Txawm hais tias tus nqaj qaum ua rau peb sawv ntsug ncaj, tus qauv yog dab tsi tab sis. Muaj tiag peb qhov nkhaus nkhaus ntawm tus nqaj qaum (plaub yog tias koj suav tus pob tw)
Dab tsi yog qhov inverted U nkhaus?
Inverted-U hypothesis. ib qho kev sib raug zoo ntawm kev txhawb siab (los yog arousal) thiab kev ua tau zoo xws li qhov kev ua tau zoo yog qhov tsis zoo tshaj thaum kev txhawb siab lossis kev xav tau qis heev lossis siab heev. Txoj haujlwm no feem ntau hu ua Yerkes-Dodson txoj cai
Dab tsi yog qhov oxyhemoglobin dissociation nkhaus qhia peb?
Hauv nws daim ntawv yooj yim tshaj plaws, txoj kab kev sib cais ntawm oxyhemoglobin piav qhia qhov sib piv ntawm ib nrab ntawm cov pa (x axis) thiab cov pa saturation (y axis). Hemoglobin kev sib raug zoo rau cov pa oxygen nce ntxiv raws li cov txheej txheem txuas ntxiv ntawm cov pa oxygen khi