Ka bobeli Mokhatlo oa Lefatše oa Bophelo le Litsi tsa US tsa Taolo ea Mafu li hlokomela hore li-aerosol ke mokhoa oa mantlha oa ho hasana ha vaerase ea COVID-19. Li-aerosol ke likaroloana tse nyane tsa metsi kapa lintho tse ling tse ka lulang li fanyehiloe moeeng ka nako e telele, li le nyane ho lekana ho kenella tsamaisong ea ho hema.
Batho ba ntša li-aerosol ha ba hema, ba khohlela, ba bua, ba hoeletsa kapa ba bina. Li-aerosol tsena le tsona li ka ba le vaerase haeba li tšoaelitsoe ke COVID-19. Ho hema li-aerosol tse lekaneng tsa coronavirus ho ka kulisa motho. Ka ho hloka hore batho ba roale limaske, ho ntlafatsa moea o kenang ka tlung le lisebelisoa tsa ho hloekisa moea, ho fokotsa ho pepeseha ha motho le ho fokotsa palo eohle ea li-aerosols tikolohong ke lintho tse tlang pele ho thibela ho ata ha li-aerosol tsa COVID-19.
Lipatlisiso ka livaerase tse ncha tse tšoaetsanoang li kotsi, 'me li batla li sa tloaeleha lilaboratoring tse nang le maemo a phahameng ka ho fetisisa a ts'ireletso ea likokoana-hloko. Lithuto tsohle ho fihlela joale tse mabapi le limaske kapa ts'ebetso ea ho sefa nakong ea seoa li sebelisitse lisebelisoa tse ling tse nahanoang ho etsisa boholo le boits'oaro ba li-aerosol tsa SARS-CoV-2. Boithuto bona bo bocha bo ntlafala ho seo, ho leka litharollo tsa letsoai le aerosolized tse nang le coronavirus e tsoang lelapeng le le leng le vaerase e bakang COVID-19 empa e tšoaetsa litoeba feela.
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.
Mokhoa oa tlhahiso, o tsejoang e le electrospinning, o na le litšenyehelo tse ngata 'me o ka sebelisoa ho hlahisa lihlahisoa tse ngata tsa nanofiber bakeng sa lisebelisoa tsa ho itšireletsa le mekhoa ea ho hloekisa moea. Electrospinning e boetse e siea tefiso ea electrostatic ho li-nanofibers, e ntlafatsang bokhoni ba tsona ba ho hapa li-aerosol, 'me porosity ea eona e phahameng e etsa hore ho be bonolo ho hema ha u ntse u roala filthara ea electrospun nanofiber.
“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.”
Nako ea poso: Nov-01-2022
