2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Crystallography yog siv los ntawm cov kws tshawb fawb los ua tus yam ntxwv sib txawv. Nyob rau hauv ib lub crystals, qhov cuam tshuam ntawm crystalline kev npaj ntawm atoms yog feem ntau yooj yim pom macroscopically, vim hais tias cov duab ntawm ntuj crystals qhia txog cov qauv atomic.
Qhov tseem ceeb ntawm crystallography yog dab tsi?
Nws yuav tsis yog cov kws paub txog kev tshawb fawb tshaj plaws rau txhua tus, tab sis crystallography yog ib qho ntawm cov txheej txheem tseem ceeb tshaj plaws hauv kev pab kom nkag siab lub ntiaj teb nyob ib puag ncig peb. Crystallographers tuaj yeem ua haujlwm tawm cov qauv atomic ntawm yuav luag txhua yam. Thiab lawv siv qhov kev paub no los teb vim li cas txhua yam coj li lawv ua.
crystallography siv niaj hnub no li cas?
Hnub no, cov kws tshawb fawb siv lead ua kawm txog cov qauv atomic ntawm txhua yam khoom siv uas tuaj yeem tsim cov siv lead ua, los ntawm cov tshuaj yooj yim heev rau cov kab mob, cov protein lossis cov protein ntau ntau. Tab sis lawv kuj tshawb xyuas ntau yam ntawm lwm yam ntaub ntawv, xws li daim nyias nyias, kua muaju, fibers, iav, kua, gases thiab quasicrystals.
Koj piav qhia txog crystallography li cas?
Crystallography, ceg ntawm kev tshawb fawb uas deals nrog kev paub txog kev npaj thiab kev sib txuas ntawm atoms hauv crystalline solids thiab nrog cov qauv geometric ntawm siv lead ua lattices. Classically, cov khoom siv kho qhov muag ntawm cov khoom siv lead ua muaj txiaj ntsig hauv mineralogy thiab chemistry rau kev txheeb xyuas cov khoom.
Peb kawm dab tsicrystallography?
Crystallography yog kawm txog atomic thiab molecular qauv. Crystallographers xav paub yuav ua li cas cov atoms nyob rau hauv ib cov khoom yog teem nyob rau hauv thiaj li yuav nkag siab txog kev sib raug zoo ntawm atomic qauv thiab cov khoom ntawm cov ntaub ntawv. … Crystallography pib nrog kev kawm ntawm cov muaju, zoo li quartz.
Pom zoo:
Puas yog cov dab dab dab dab dab dab dab dab dab dab dab dab?
Myth: Ib tug dab tshos tsis yog neeg ncaj ncees yog tiasnws haum yog. Fact: Tu siab, qhov no yog ib lo lus tsis tseeb uas tau raug perpetuated los ntawm aversive trainers. Txawm hais tias haum rau lub caj dab kom zoo khawb rau hauv cov tawv nqaij rhiab nyob ib ncig ntawm lub caj dab, uas ua rau muaj kev puas tsuaj loj rau cov thyroid, esophagus, thiab trachea.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Yuav siv dab tsi txhawm rau txhawm rau txhawm rau txhawm?
Siv phom caulk siv cov hlaws tuab ntawm caulk ncig ntawm ntug ntawm lub txee. Tsa lub dab dej kom nws nias tawm tsam lub hauv qab ntawm lub countertop thiab tsim cov dej tsis sib haum. Ntxiv cov laug cam thiab shims raws li xav tau los xyuas kom meej lub dab dej nyob hauv qhov chaw.
Puas yog cov dab dab dab dab dab dab tau them?
OHL cov neeg ua si tsis tau nyiaj hli, vim lawv tsis raug lees paub tias yog cov neeg ua haujlwm raws li Txoj Cai Kev Ua Haujlwm. Txawm li cas los xij, lawv suav nrog cov txiaj ntsig xws li nyiaj rov qab txhua xyoo, tag nrho cov nqi kawm ntawv them, thiab daim pib pub dawb.
Dab tsi yog qhov teeb meem theem hauv x-ray crystallography?
Nyob hauv physics, qhov teeb meem theem yog qhov teeb meem ntawm cov ntaub ntawv poob txog theem uas tuaj yeem tshwm sim thaum ntsuas lub cev. Lub npe los ntawm daim teb ntawm X-ray crystallography, qhov twg cov theem teeb meem yuav tsum tau daws rau kev txiav txim ntawm ib tug qauv ntawm cov ntaub ntawv diffraction.
