Video: Dab tsi yog qhov tseem ceeb ntawm silicon?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kuj hu ua silica xuab zeb lossis quartz xuab zeb, silica yog silicon dioxide (SiO2). Silicon compounds yog qhov tseem ceeb tshaj plaws ntawm cov khoom Lub ntiaj teb crust . Txij li cov xuab zeb yog plentiful, yooj yim rau kuv thiab kuj yooj yim rau txheej txheem, nws yog thawj qhov chaw ntawm silicon. Lub pob zeb metamorphic, quartzite, yog lwm qhov chaw.
Ib yam li ib tug yuav nug, qhov twg yog Silicon feem ntau pom?
Silicon : piav qhia Silicon yog tam sim no nyob rau hauv lub hnub thiab hnub qub thiab yog ib feem tseem ceeb ntawm ib chav kawm ntawm meteorites hu ua aerolites. Silicon ua 25.7% ntawm lub ntiaj teb crust los ntawm qhov hnyav, thiab yog qhov thib ob feem ntau ntau lub caij, tshaj tsuas yog los ntawm oxygen.
Kuj Paub, silicon mined li cas? Silicon yog tsim los ntawm cua sov xuab zeb (SiO2) nrog cov pa roj carbon mus rau qhov kub ntawm 2200 ° C. Ntawm chav sov, silicon muaj nyob rau hauv ob hom, amorphous thiab crystalline. SiO2 yog khawb av ob qho tib si raws li xuab zeb thiab raws li cov hlab ntsha los yog lode deposits, siv rau hauv kev lag luam.
Kuj paub, dab tsi yog 5 siv silicon?
Hyperpure silicon tuaj yeem doped nrog boron, gallium, phosphorus, lossis arsenic los tsim silicon siv rau hauv transistors, solar cells, rectifiers, thiab lwm yam khoom siv hauv lub xeev uas tau siv dav hauv cov khoom siv hluav taws xob thiab chaw hnub nyoog.
Qhov twg siv silicon?
Lub ntsiab silicon yog siv Feem ntau raws li ib tug semiconductor nyob rau hauv solid-state li nyob rau hauv lub computer thiab microelectronics industries. Rau qhov no, hyperpure silicon yog xav tau. Cov silicon yog xaiv doped nrog me me ntawm boron, gallium, phosphorus los yog arsenic los tswj nws cov khoom hluav taws xob.
Pom zoo:
Dab tsi yog qhov txiaj ntsig tseem ceeb ntawm kev taw qhia ntawm tes los ntawm kev sib cuag lub cev ncaj qha?
Kev taw qhia kuj tshwm sim ntawm cov hlwb uas yog kev sib cuag ntawm lub cev. Kev sib cuam tshuam ntawm cov proteins ntawm qhov chaw ntawm cov hlwb tuaj yeem ua rau muaj kev hloov pauv hauv cov cwj pwm ntawm tes. Piv txwv li, cov proteins nyob rau saum npoo ntawm T-cells thiab antigen nthuav tawm cov hlwb sib cuam tshuam los ua kom muaj kev taw qhia hauv T-cells
Dab tsi yog qhov txawv ntawm qhov sib txawv ntawm qhov sib txawv thiab qhov sib txawv ntawm qhov ntab?
Integers thiab floats yog ob yam sib txawv ntawm cov ntaub ntawv tus lej. Ib tus lej (feem ntau hu ua anint) yog tus lej tsis muaj tus lej lej. Float isa floating-point number, uas txhais tau hais tias nws yog tus lej uas muaj tus lej lej. Floats siv thaum xav tau ntau dua
Vim li cas qhov tseem ceeb ntawm qhov tseem ceeb?
Thaum koj pom tus nqi kiag li hauv qhov teeb meem lossis qhov sib npaug, nws txhais tau hais tias txhua yam nyob hauv tus nqi tiag tiag yog qhov zoo. Cov txiaj ntsig tsis zoo feem ntau siv rau hauv cov teeb meem cuam tshuam nrog kev nyob deb thiab qee zaum siv nrog qhov tsis sib xws. Qhov ntawd yog qhov tseem ceeb uas yuav tsum nco ntsoov nws zoo li qhov deb ntawm xoom
Ob qhov tseem ceeb ntawm lub voj voog ntawm tes yog dab tsi thiab dab tsi tshwm sim rau lub cell hauv txhua theem?
Muaj ob theem tseem ceeb hauv lub voj voog ntawm tes. Thawj theem yog interphase thaum lub cell loj hlob thiab replicates nws DNA. Qhov thib ob yog theem mitotic (M-Phase) thaum lub sijhawm cell faib thiab hloov ib daim qauv ntawm nws cov DNA mus rau ob lub hlwb zoo tib yam
Dab tsi yog 2 qhov tseem ceeb ntawm lub voj voog ntawm tes thiab dab tsi tshwm sim rau lub cell hauv txhua theem?
Cov xwm txheej no tuaj yeem muab faib ua ob qhov tseem ceeb: interphase (hauv nruab nrab ntawm kev sib faib theem ua pawg G1 theem, S theem, G2 theem), thaum lub xov tooj ntawm tes tsim thiab ua nrog nws cov haujlwm metabolic; mitotic theem (M mitosis), thaum lub sij hawm lub cell yog replicating nws tus kheej