Please provide your email address to receive an email when new articles are posted on . Nearly 100% of N95 masks pass fit tests after 3 years, suggesting annual tests are not necessary. Moving to ...

The fit of your face mask has a lot to do with how effective it is — the tighter the better for filtering your breath and keeping others safe from viral particles, including those of COVID-19. That ...

Chet Fortune works out using an altitude training mask at to increase his lung capacity. Fortune is a co-owner of Warrior Fitness Center in La Vista. Video: Weird mask, great workout In April, a few ...

Fig. 1. Given (a) the scanned face model of a subject, we develop an optimization-based approach to design (b&c) a PAP mask cushion that fits the face model. (d) The designed mask cushion is ...