About: Viral air load due to sedimenting and evaporating droplets produced by speaking

Facets (new session)
Description
Metadata
Settings
- owl:sameAs
- Inference Rule:

About: Viral air load due to sedimenting and evaporating droplets produced by speaking Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : covidontheweb.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	Viral air load due to sedimenting and evaporating droplets produced by speaking
Creator	Netz, Roland
source	ArXiv
abstract	The effect of evaporation on droplet sedimentation times is crucial for estimating the risk of infection from virus-containing airborne droplets. For droplet radii in the range 100 nm<R<60 {/mu}m, evaporation can be described in the stagnant-flow approximation and is diffusion limited. Analytical equations are presented for the droplet evaporation rate, the time-dependent droplet size and the sedimentation time, including the significant effect of evaporation cooling. Evaporation makes the time for large droplets to sediment much longer and thus significantly increases the viral air load. Using recent estimates for SARS-CoV-2 concentrations in sputum and droplet production rates while speaking, a single infected person that constantly speaks without a mouth cover produces a total air load of more than 10^4 virions. In a mid-size closed room, this leads to a viral inhalation frequency of at least 2.5 per minute. Low relative humidity, as encountered inside buildings in winter and in airliners, speeds evaporation and thus keeps initially larger droplets suspended in air.
has issue date	2020-04-27(xsd:dateTime)
has license	arxiv
sha1sum (hex)	69e371c50524b55e7e91f0c9ba9f0d2422ee24df
resource representing a document's title	Viral air load due to sedimenting and evaporating droplets produced by speaking
resource representing a document's body	covid:69e371c50524b55e7e91f0c9ba9f0d2422ee24df#body_text
is schema:about of	named entity 'VIRAL' named entity 'PERSON' named entity 'TOTAL' named entity 'ESTIMATES' named entity 'LEADS' »more»

Faceted Search & Find service v1.13.91 as of Mar 24 2020

Alternative Linked Data Documents: Sponger | ODE Content Formats:

RDF

ODATA

Microdata

About

OpenLink Virtuoso version 07.20.3229 as of Jul 10 2020, on Linux (x86_64-pc-linux-gnu), Single-Server Edition (94 GB total memory)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2025 OpenLink Software