Science
Restoring the filtration efficiency of N95 masks after they have been cleaned – Phys.org
N95 masks are a critical part of the personal protective equipment used by front-line health care workers. These masks achieve 95% efficiency at filtering out tiny 0.3-micron particles, while maintaining reasonable breathability, thanks to a layer of fine mel…
N95 masks are a critical part of the personal protective equipment used by front-line health care workers. These masks achieve 95% efficiency at filtering out tiny 0.3-micron particles, while maintaining reasonable breathability, thanks to a layer of fine melt-blown polypropylene fibers incorporating electrical charges to attract particles.
Extended usage and decontamination provoked by severe supply shortages around the globe during the COVID-19 pandemic can easily remove the charges and degra…
-
Noosa News12 hours agoMega-team of heavy horses sets world record at Good Old Days Festival
-
General5 hours agoHow the internet reacted to Brisbane Broncos winning the NRL grand final
-
General16 hours agoEnglish springer spaniels Kelly and Milo helping fight dieback in Western Australia
-
General15 hours agoHomicide Squad investigating ‘suspicious’ death of 84yo woman in Sydney suburb of Melonba