Implications of the Spatiotemporal Distribution of Co2 on Indoor Air Quality: A Large-Scale Field Study with Reduced-Order Modeling DOI
Vamsi Bankapalli, Narsing K. Jha,

Jay Dhariwal

et al.

Published: Jan. 1, 2024

Language: Английский

The Impact of Environmental Aging Processing on Bioaerosol Detection Using Circular Intensity Differential Scattering (CIDS) DOI Creative Commons

Daniel N. Ackerman,

Yong‐Le Pan,

Aimable Kalume

et al.

Journal of Aerosol Science, Journal Year: 2025, Volume and Issue: 186, P. 106555 - 106555

Published: Feb. 25, 2025

Language: Английский

Citations

0
Dependence of aerosol-borne influenza A virus infectivity on relative humidity and aerosol composition DOI Creative Commons
Ghislain Motos, Aline Schaub, Shannon C. David

et al.

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: Oct. 16, 2024

We describe a novel biosafety aerosol chamber equipped with state-of-the-art instrumentation for bubble-bursting generation, size distribution measurement, and condensation-growth collection to minimize sampling artifacts when measuring virus infectivity in particles. Using this facility, we investigated the effect of relative humidity (RH) very clean air without trace gases (except ∼400 ppm CO 2 ) on preservation influenza A (IAV) saline characterized terms 99%-inactivation time, t 99 , metric consider most relevant airborne transmission. The viruses remained infectious long namely > 5 h, if RH < 30% particles effloresced. Under intermediate conditions (40% 70%), loss was rapid ( ≈ 15–20 min, up 35 min at 95% RH). This is more than an order magnitude faster suggested by many previous studies aerosol-borne IAV, possibly due use matrices containing organic molecules, such as proteins, protective effects virus. tested hypothesis adding sucrose our aerosolization medium and, indeed, observed protection IAV (55%). Interestingly, measurements are also systematically lower those 1-μL droplet organic-free solutions, which cannot be explained particle alone.

Language: Английский

Citations

2
Dependence of aerosol-borne influenza A virus infectivity on relative humidity and aerosol composition DOI Creative Commons
Ghislain Motos, Aline Schaub, Shannon C. David

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: May 28, 2024

Abstract We describe a novel biosafety aerosol chamber equipped with state-of-the-art instrumentation for bubble-bursting generation, size distribution measurement, and condensation-growth collection to minimize sampling artifacts when measuring virus infectivity in particles. Using this facility, we investigated the effect of relative humidity (RH) very clean air without trace gases (except ∼400 ppm CO 2 ) on preservation influenza A (IAV) saline characterized terms 99%-inactivation time, t 99 , metric consider most relevant airborne transmission. The viruses remained infectious long namely > 5 h, if RH < 30% particles effloresced. Under intermediate conditions (40% 70%), loss was rapid ( ≈ 15-20 min, up 35 min at 95% RH). This is more than an order magnitude faster suggested by many previous studies aerosol-borne IAV, possibly due use matrices containing organic molecules, such as proteins, protective effects virus. tested hypothesis adding sucrose our aerosolization medium and, indeed, observed protection IAV (55 %). Interestingly, measurements are also systematically lower those 1-μL droplet organic-free solutions, which cannot be explained particle alone.

Language: Английский

Citations

1
Implications of the spatiotemporal distribution of CO2 on indoor air quality: A field study with reduced-order modeling DOI
Vamsi Bankapalli, Narsing K. Jha,

Jay Dhariwal

et al.

Building and Environment, Journal Year: 2024, Volume and Issue: 269, P. 112451 - 112451

Published: Dec. 13, 2024

Language: Английский

Citations

1
Implications of the Spatiotemporal Distribution of Co2 on Indoor Air Quality: A Large-Scale Field Study with Reduced-Order Modeling DOI
Vamsi Bankapalli, Narsing K. Jha,

Jay Dhariwal

et al.

Published: Jan. 1, 2024

Language: Английский

Citations

0