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10.1016/j.buildenv.2021.108239 http://scihub22266oqcxt.onion/10.1016/j.buildenv.2021.108239 34393326!8349476!34393326     free     free     free Deprecated: Implicit conversion from float 215.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Deprecated: Implicit conversion from float 215.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534       Build+Environ 2021 ; 205 (ä): 108239 Nephropedia Template TP {{tp|p=34393326|t=2021. Aerosols from speaking can linger in the air for up to nine hours |pdf=|usr=}}{{34393326}} gab.com Text Aerosols from speaking can linger in the air for up to nine hours JO: Build Environ http://www.kidney.de/pget.php?&tw=1&pmid=34393326 #FOAvip Airborne transmission of respiratory diseases has been under intense spotlight in the context of coronavirus disease 2019 (COVID-19) where continued resurgence is linked to the relaxation of social interaction measures. To understand the role of speech aerosols in the spread of COVID-19 globally, the lifetime and size distribution of the aerosols are studied through a combination of light scattering observation and aerosol sampling. It was found that aerosols from speaking suspended in stagnant air for up to 9 h with a half-life of 87.2 min. The half-life of the aerosols declined with the increase in air change per hour from 28 to 40 min (1 h(-1)), 10-14 min (4 h(-1)), to 4-6 min (9 h(-1)). The speech aerosols in the size range of about 0.3-2 mum (after dehydration) witnessed the longest lifetime compared to larger aerosols (2-10 mum). These results suggest that speech aerosols have the potential to transmit respiratory viruses across long duration (hours), and long-distance (over social distance) through the airborne route. These findings are important for researchers and engineers to simulate the airborne dispersion of viruses in indoor environments and to design new ventilation systems in the future. Twit Text FOAVip Aerosols from speaking can linger in the air for up to nine hours ????Build Environ http://www.kidney.de/pget.php?&tw=1&pmid=34393326 #FOAvip Twit Text # Free Paper on # # # # # LINK http://www.kidney.de/pget.php?&tw=1&pmid=34393326 #FOAvip English Wikipedia <ref>{{Cite pmid|34393326}}</ref> Aerosols from speaking can linger in the air for up to nine hours #MMPMID34393326 Ding S; Teo ZW; Wan MP; Ng BF Build Environ 2021[Nov]; 205 (ä): 108239 PMID34393326show ga Airborne transmission of respiratory diseases has been under intense spotlight in the context of coronavirus disease 2019 (COVID-19) where continued resurgence is linked to the relaxation of social interaction measures. To understand the role of speech aerosols in the spread of COVID-19 globally, the lifetime and size distribution of the aerosols are studied through a combination of light scattering observation and aerosol sampling. It was found that aerosols from speaking suspended in stagnant air for up to 9 h with a half-life of 87.2 min. The half-life of the aerosols declined with the increase in air change per hour from 28 to 40 min (1 h(-1)), 10-14 min (4 h(-1)), to 4-6 min (9 h(-1)). The speech aerosols in the size range of about 0.3-2 mum (after dehydration) witnessed the longest lifetime compared to larger aerosols (2-10 mum). These results suggest that speech aerosols have the potential to transmit respiratory viruses across long duration (hours), and long-distance (over social distance) through the airborne route. These findings are important for researchers and engineers to simulate the airborne dispersion of viruses in indoor environments and to design new ventilation systems in the future. äAerosols from speaking can linger in the air for up to nine hours (epmc).pdf DeepDyve Pubget Overpricing