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Nicole SharpSimulating a SneezeSneezing and coughing can spread pathogens both through large droplets and through tiny, airborne aerosols. Understanding how the nasal cavity shapes the aerosol cloud a sneeze produces is critical to understanding and predicting how viruses could spread. Toward that end, researchers built a <a href="https://doi.org/10.1063/5.0241346" rel="nofollow noopener noreferrer" target="_blank">“sneeze simulator”</a> based on the upper respiratory system’s geometry. With their simulator, the team mimicked violent exhalations both with the nostrils open and closed — to see how that changed the shape of the aerosol cloud produced.The researchers found that closed nostrils produced a cloud that moved away along a 18 degree downward tilt, whereas an open-nostril cloud followed a 30-degree downward slope. That means having the nostrils open reduces the horizontal spread of a cloud while increasing its vertical spread. Depending on the background flow that will affect which parts of a cloud get spread to people nearby. (Image and research credit: <a href="https://doi.org/10.1063/5.0241346" rel="nofollow noopener noreferrer" target="_blank">N. Catalán et al.</a>; via <a href="https://physicsworld.com/a/sneeze-simulator-could-improve-predictions-of-pathogen-spread/" rel="nofollow noopener noreferrer" target="_blank">Physics World</a>)<a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/aerosols/" target="_blank">#aerosols</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/biology/" target="_blank">#biology</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/coughing/" target="_blank">#coughing</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/covid-19/" target="_blank">#COVID19</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/disease-transmission/" target="_blank">#diseaseTransmission</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/droplets/" target="_blank">#droplets</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/flow-visualization/" target="_blank">#flowVisualization</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/fluid-dynamics/" target="_blank">#fluidDynamics</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/physics/" target="_blank">#physics</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/science/" target="_blank">#science</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/sneezing/" target="_blank">#sneezing</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://fyfluiddynamics.com/tagged/turbulence/" target="_blank">#turbulence</a>

Blanche Page"Chopper une maladie qui a un nom de vaccin" : bin c'est dommage si on pouvait faire le-dit vaccin :shibasmug: Avec les Etats-Unien•nes dont le système part en vrille, C'est le moment de vérifier que vous avez votre vaccination <a href="https://piaille.fr/tags/Rougeole" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Rougeole</a> (oreillons rubéole) à jour. <a href="https://vaccination-info-service.fr/" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://vaccination-info-service.fr/</a>Ah et sinon, pour les <a href="https://piaille.fr/tags/rhumes" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rhumes</a>, le <a href="https://piaille.fr/tags/covid" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#covid</a>, la <a href="https://piaille.fr/tags/grippe" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#grippe</a>, la rougeole, ... en attendant que nous décidions collectivement d'actions pour diminuer la présence des pathogènes aéoroportés dans les lieux clos collectifs (oui, je peux rêver), le <a href="https://piaille.fr/tags/masque" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#masque</a> protège...Allez bisous<a href="https://piaille.fr/tags/Autod%C3%A9fenseSanitaire" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#AutodéfenseSanitaire</a> <a href="https://piaille.fr/tags/R%C3%A9ductionDesRisques" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#RéductionDesRisques</a> <a href="https://piaille.fr/tags/A%C3%A9rosols" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Aérosols</a>

William Canna-bass<a href="https://c.im/@ringwoodunitarians" class="u-url mention">@ringwoodunitarians</a> <a href="https://newsie.social/@blackburied" class="u-url mention">@blackburied</a> <a href="https://zeroes.ca/@currentbias" class="u-url mention">@currentbias</a> Should be noted that <a href="https://kolektiva.social/tags/SARSCoV2" class="mention hashtag" rel="tag">#SARSCoV2</a> is primarily transmitted by <a href="https://kolektiva.social/tags/aerosols" class="mention hashtag" rel="tag">#aerosols</a> and not discrete droplets. Wear an N95 respirator in high population density areas and in health care settings.

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