Chiwopsezo Chachete kwa Miyoyo
Nkhani yochititsa chidwiyi imayamba madzulo a June 15 m’chigawo cha Henan, kumene galimoto yafriji yonyamula zakudya zatsopano inakhala malo angozi mwakachetechete. Ogwira ntchito achikazi asanu ndi atatu adapezeka ali chikomokere m'chipinda chotsekedwa, chomwe sichimatentha kwambiri. Akuluakulu akukayikira kuti madzi oundana owuma adatuluka chifukwa cha kuchepa kwa okosijeni, zomwe zimapangitsa kuti asapirire ndipo, pamapeto pake, kufa kwawo mwadzidzidzi. Pamene kufufuza kukuchitika, chochitikachi chikugogomezera kuopsa kwa ayezi wowuma m'malo osawerengeka.
Kodi Dry Ice N'chiyani?
Kwa ambiri, “ayisi” amawakumbutsa za chakumwa chotsitsimula cha m’chilimwe. Koma mu sayansi, ayezi amatenga mawonekedwe ochititsa chidwi kwambiri. Madzi oundana owuma, mawonekedwe olimba a carbon dioxide (CO₂), adapezeka koyamba mu 1835 ndi wasayansi waku France Charles Thilorier. Anawona kuti CO₂ yamadzimadzi, ikatuluka nthunzi, imasiya zotsalira zolimba - zomwe tsopano tikudziwa ngati ayezi wouma.
Mosiyana ndi ayezi wamba, omwe amasungunuka m'madzi, madzi oundana owuma amatsika kuchokera ku cholimba kupita ku mpweya wa -78.5 ° C, osasiya madzi otsalira. Katunduyu wapanga kukhala chisankho chokondeka ponyamula katundu wowonongeka ngati ayisikilimu ndi mankhwala.
Kuopsa kwa Dry Ice
Ngakhale kuti amagwiritsidwa ntchito kwambiri, madzi oundana owuma amakhala oopsa. CO₂ ndi mpweya wopanda mtundu, wopanda fungo womwe ndi wolemera kuposa mpweya, womwe umachititsa kuti ukhazikike pansi pamipata yotsekedwa. M'malo opanda mpweya wabwino, madzi oundana owuma amachotsa mpweya, zomwe zimatsogolera ku hypoxia (kuchepa kwa okosijeni) komanso kuwonjezeka kwa CO₂.
Zizindikiro za CO₂ Kuwonekera Kwambiri:
- Kutuluka thukuta
- Kupuma mofulumira
- Kugunda kwa mtima
- Kupuma pang'ono
- Kukomoka
Pamene milingo ya CO₂ ipitilira2%, zizindikiro zimaonekera. Pa5%, mpweyawo umapangitsa kuti munthu azimwa mowa mwauchidakwa. Pamwamba8-10%, chikomokere ndi imfa zingachitike m’mphindi zochepa chabe.
Zochitika Zenizeni
Nkhani zomvetsa chisoni zakusamalidwa kowuma kwa ayezi zimawonetsa kuthekera kwake koopsa:
- 2004 mphepo yamkuntho Ivan: Bambo wina anagwiritsa ntchito madzi oundana olemera makilogalamu 45 kuti asunge chakudya m’galimoto yake pamene magetsi anazima. Kusayenda bwino kwagalimoto m'galimotoyo kudapangitsa kuti CO₂ ikwere, zomwe zidamusiya ali chikomokere mpaka atapulumutsidwa.
- 2022 Lab Ngozi: Wophunzira womaliza maphunziro awo pa yunivesite ya California anakomoka akunyamula madzi oundana owuma m’chidebe chakuya. Ngakhale adachira, zomwe zidamuchitikirazi zidamusiya ndi PTSD, zomwe zidawonetsa kukhudzidwa kwamalingaliro ndi thupi la CO₂.
Chifukwa chiyani CO₂ Ndi Yowopsa
Kulemera kwa ma molekyulu a CO₂ kumapangitsa kuti ikhale yolimba kuposa mpweya, zomwe zimapangitsa kuti ziziunjikana m'malo otsika. Pamene ndende ya CO₂ ikuwonjezeka, mpweya wa okosijeni umatsika, zomwe zimayambitsa zotsatira za thupi monga hyperventilation, kuchepa kwa magazi pH, ndi kusokonezeka kwa mtima ndi dongosolo lamanjenje.
Njira Zopewera
- Mpweya wabwino: Nthawi zonse sungani madzi oundana owuma m'malo omwe mpweya wabwino umalowa bwino kuti CO₂ isachuluke.
- Chenjezo Labels: Ogulitsa ayenera kulemba momveka bwino zomwe zili ndi machenjezo owopsa kuti achenjeze ogwiritsa ntchito za kuwopsa.
- Kudziwitsa Ogula: Pewani kusunga kapena kugwiritsa ntchito madzi oundana owuma m’malo otsekedwa, monga magalimoto kapena zipinda zing’onozing’ono.
Mapeto
Madzi oundana owuma ndi chida chofunikira pakusunga chakudya komanso njira zamafakitale, koma kuwopsa kwake m'malo otsekeka nthawi zambiri kumanyalanyazidwa. Gasi wosaoneka, wosanunkhiza woterewu ukhoza kupha pakangopita mphindi zochepa ngati wasamalidwa bwino. Kudziwitsa anthu ndikukhazikitsa njira zachitetezo ndizofunikira kwambiri kuti tipewe ngozi zofananira.
Nthawi yotumiza: Nov-25-2024