2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cov kev cuam tshuam spallation yog hom tshuaj tiv thaiv nuclear uas tshwm sim hauv qhov chaw los ntawm kev cuam tshuam ntawm cosmic rays nrog lub cev interstellar. Thawj qhov kev tshwm sim tshwm sim tshwm sim nrog lub accelerator tshwm sim xyoo 1947 ntawm Berkeley cyclotron (University of California) nrog 200 MeV deuterons thiab 400 MeV alpha beams.
Spallation reaction piv txwv yog dab tsi?
Spallation yog kev tawm tsam hnyav uas lub hom phiaj raug foob los ntawm cov khoom muaj zog heev. Qhov xwm txheej, xws li proton, disintegrates lub nucleus los ntawm inelastic nuclear tshwm sim. Qhov tshwm sim yog qhov emission ntawm protons, neutrons, α-particles, thiab lwm yam hais.
hom tshuaj tiv thaiv nuclear yog dab tsi?
Ob hom kev tawm tsam nuclear yog nuclear decay reactions thiab nuclear transmutation reactions. Nyob rau hauv cov tshuaj tiv thaiv kev lwj, tseem hu ua radioactive decay, ib qho tsis ruaj khov nucleus emits hluav taws xob thiab hloov mus rau hauv lub nucleus ntawm ib lossis ntau lwm yam.
Dab tsi yog hu ua spallation?
Spallation yog txheej txheem uas cov khoom tawg (spall) raug tshem tawm ntawm lub cev vim muaj kev cuam tshuam lossis kev ntxhov siab. … Nyob rau hauv nuclear physics, spallation yog tus txheej txheem nyob rau hauv uas ib tug hnyav nucleus emits ntau nucleons vim raug ntaus los ntawm ib tug high-zog particle, yog li txo nws cov hnyav atomic heev.
Kev ntes cov tshuaj tiv thaiv yog dab tsi?
Neutron capture is a nuclear reaction in which a atomic nucleusthiab ib los yog ntau dua neutrons sib tsoo thiab sib koom ua ib lub nucleus hnyav dua. Txij li cov neutrons tsis muaj hluav taws xob, lawv tuaj yeem nkag mus rau hauv lub nucleus yooj yim dua li cov protons uas muaj txiaj ntsig zoo, uas tau rov ua electrostatically.
Pom zoo:
Cov tshuaj tiv thaiv dab tsi rau kev txhaj tshuaj tiv thaiv thib ob?
Cov tshuaj tiv thaiv COVID-19 thib ob yog dab tsi? Cov kev mob tshwm sim feem ntau tom qab koob thib ob yog qhov mob ntawm qhov chaw txhaj tshuaj (92.1% tshaj tawm tias nws kav ntev dua 2 teev); qaug zog (66.4%); mob lub cev lossis leeg nqaij (64.
Puas yog lub cev tiv thaiv kab mob hauv lub cev puas tsim cov tshuaj tiv thaiv?
Lub cev tiv thaiv kab mob tau txais, nrog kev pab los ntawm lub cev hauv lub cev, tsim cov hlwb (tshuaj tiv thaiv kab mob) los tiv thaiv koj lub cev los ntawm ib tus neeg invader tshwj xeeb. Cov tshuaj tiv thaiv no yog tsim los ntawm cov hlwb hu ua B lymphocytes tom qab lub cev tau raug rau cov neeg ua phem.
Vim li cas cov tshuaj tiv thaiv combustion yog cov tshuaj tiv thaiv oxidation?
Kev sib xyaw ua ke ib txwm ua rau muaj oxygen lossis huab cua. … Hauv combustion cov tshuaj tiv thaiv oxygen yog ua ke nrog cov roj qhov chaw feem ntau carbon thiab hydrogen raws li ua rau carbon dioxide thiab dej thiab yog li qhov no yog cov tshuaj tiv thaiv oxidation.
Cov tshuaj twg yog cov tshuaj uas tsis yog tshuaj tiv thaiv inflammatory analgesic?
Txhua yam koj yuav tsum paub txog NSAIDs. Nonsteroidal anti-inflammatory tshuaj (NSAIDs) yog cov tshuaj uas txo qis lossis txo qhov mob. Cov piv txwv nrov tshaj plaws ntawm cov tshuaj hauv pawg no yog aspirin thiab ibuprofen. NSAIDs tuaj nyob rau hauv lub ntsiab lus dav ntawm non-opioid analgesics.
Yuav ua li cas cov tshuaj tiv thaiv coagulants tiv thaiv cov ntshav txhaws?
Anticoagulants tseem hu ua ntshav thinners yog cov tshuaj uas siv los kho thiab tiv thaiv cov ntshav txhaws. Lawv cuam tshuam cov txheej txheem kev koom tes hauv kev tsim cov ntshav txhaws thiab ua haujlwm los ntawm kev tsom mus rau cov ntshav txhawsyam xws li thrombin, fibrin, thiab vitamin K.
