Ururka Caafimaadka Adduunka iyo Xarumaha Xakamaynta Cudurrada ee Maraykanka labaduba waxay aqoonsan yihiin in hawada hawada sare ay tahay habka koowaad ee faafitaanka fayraska COVID-19. Aerosols waa qaybo yaryar oo biyo ah ama walxo kale oo hawada ku hadhi kara wakhti dheer, oo yar oo ku filan inay galaan habka neefsashada.
Dadku waxay sii daayaan hawada hawada marka ay neefsanayaan, qufacayaan, hadlaan, qaylinayaan ama heesayaan. Aerosols-yadani waxa kale oo ay ku jiri karaan fayraska haddii ay qabaan COVID-19. Neefsashada xaddi ku filan aerosols ee coronavirus waxay qofka ka dhigi kartaa jirro. Iyada oo looga baahan yahay dadka inay xidhaan maaskaro, hagaajinta hawo-mareenka gudaha iyo nidaamka shaandhaynta hawada, yaraynta soo-gaadhista shakhsi ahaaneed iyo yaraynta tirada guud ee hawo-mareenada deegaanka ayaa ah mudnaanta si loo xakameeyo fiditaanka COVID-19 aerosols.
Cilmi-baarista fayraska cusub ee faafa waa khatar, waana naadir shaybaarrada leh heerarka ugu sarreeya ee badbaadada noolaha. Dhammaan daraasaadka ilaa maanta ee ku saabsan waji-xidhka ama hufnaanta sifaynta inta lagu jiro aafada waxay adeegsadeen agab kale oo loo malaynayo inay ku dayanayaan cabbirka iyo dhaqanka hawada hawada sare ee SARS-CoV-2. Daraasada cusub ayaa taas ku wanaajisay, tijaabinta xalalka cusbada hawada hawada laga saaray iyo hawada ay ku jirto koronafayras ka soo jeeda isla qoyska fayraska keena COVID-19 laakiin kaliya waxa uu ku dhaca jiirka.
Yun Shen and George Washington University colleague Danmeng Shuai created a nanofiber filter that delivers a high voltage through a drop of polyvinylidene fluoride liquid to a spinning thread about 300 nanometers in diameter—about 167 times thinner than a human hair . This process created pores just a few micrometers in diameter on the nanofibers’ surface, helping them capture 99.9 percent of coronavirus aerosols.
Farsamada wax soo saarka, oo loo yaqaan electrospinning, waa kharash-ool ah waxaana loo isticmaali karaa in si ballaaran loo soo saaro filtarrada nanofiber ee qalabka ilaalinta shakhsi ahaaneed iyo hababka sifeynta hawada. Electrospinning waxa kale oo ay ka tagtaa lacag koronto ah oo ku jirta nanofiber-yada, taas oo kor u qaadaysa awoodda ay u leeyihiin in ay qabtaan hawada hawada, iyo porosity-keeda sare waxa ay sahlaysaa in la neefsado iyada oo xidhan filter nanofiber electrospun.
“Electrospinning technology can facilitate the design and manufacture of masks and air filters,” said Prof. Yun Shen. “Using electrospinning technology to develop new types of masks and air filters has good filtration performance, economic feasibility and scalability. Being able to meet the demand for masks and air filters in the field is very promising.”
Waqtiga boostada: Nov-01-2022
