Author: Giorgio Buonanno; Luca Stabile; Lidia Morawska
Title: Estimation of airborne viral emission: quanta emission rate of SARS-CoV-2 for infection risk assessment Document date: 2020_4_17
ID: 7bmj8qsv_19
Snippet: where j indicates the different expiratory activities considered (namely whispered counting, voiced 111 counting, speaking, breathing) and IR (m 3 h -1 ) is the inhalation rate, i.e. the product of breathing 112 rate (Nbr) and tidal volume (Vbr), which is a function of the activity level of the infected subject. The 113 quanta emission rate from equation (2) can vary in a wide range depending on the virus 114 concentration in the mouth, the activ.....
Document: where j indicates the different expiratory activities considered (namely whispered counting, voiced 111 counting, speaking, breathing) and IR (m 3 h -1 ) is the inhalation rate, i.e. the product of breathing 112 rate (Nbr) and tidal volume (Vbr), which is a function of the activity level of the infected subject. The 113 quanta emission rate from equation (2) can vary in a wide range depending on the virus 114 concentration in the mouth, the activity level, and the different types of expiration. Regarding the 115 inhalation rate effect, the quanta emission rate calculations are shown for three different activity 116 levels (resting, standing, and light exercise) in which the inhalation rates, averaged between males 117 and females, are equal to 0.36, 0.54, and 1.16 m 3 h -1 , respectively (Adams, 1993; International 118 Commission on Radiological Protection, 1994). 119
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