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Free business expo unites residents and companies in Ocala wcjb.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from wcjb.com Daily Mail and Mail on Sunday newspapers.
The Type of Material and Fabric Layer Amount in COVID-19 Masks Matter Written by AZoMApr 5 2021 A new study by researchers from the Georgia Institute of Technology has found that wearing a face mask can safeguard a person and others from COVID-19, but the kind of material and how many fabric layers are utilized can considerably influence the risk of exposure. Graduate student Taekyu Joo setting up the filtration efficiency measurement system. Image Credit: Fobang Liu, Georgia University of Technology. The study quantified the submicron particles’ filtration efficiency of passing through a range of different materials. By comparison, a strand of human hair measures around 50 μm in diameter, and 1 mm is equal to 1000 μm. ....
Covid-19 mask study finds layering, material choice matter eurekalert.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from eurekalert.org Daily Mail and Mail on Sunday newspapers.