![]() The stream now stretches across more than half of the night sky. It has captured smaller galaxies in its orbit, and the two largest are known as the Small and Large Magellanic Clouds, visible as twin dusty smears in the Southern Hemisphere.Īs the Magellanic Clouds began circling the Milky Way billions of years ago, an enormous stream of gas known as the Magellanic Stream was ripped from them. ![]() The Milky Way is not alone in its neighborhood. This image is taken directly from the numerical simulations, however it has been modified slightly for aesthetics. The Magellanic Corona covers the entire sky while the Magellanic Stream is seen as gas flowing away from the two dwarf galaxies, the Large and the Small Magellanic Clouds. The results reveal the importance of weather conditions in the virus's viability, which can help guide the design of measures in both indoor and outdoor environments, to reduce airborne virus transmission in private and public spaces.A view of the gas in the Magellanic System as it would appear in the night sky. This study adds to the growing body of research that reinforces the importance of social distancing and the use of face masks to prevent full virus spread. It also provides a crucial alert for the possibility of a second wave of the pandemic in the coming autumn and winter seasons, where low temperatures and high wind speeds will increase airborne virus survival and transmission. These findings help explain why the pandemic increased during July in different crowded cities around the world, such as Delhi, which experienced both high temperatures and high relative humidity. The wind speed is another crucial factor that might alter all the rules for the social distancing guidelines. ![]() "We found high temperature and low relative humidity lead to high evaporation rates of saliva-contaminated droplets, thus significantly reducing the virus viability," said co-author Talib Dbouk.Īdditionally, the researchers observed the travel distance and concentration of the droplet cloud continued to be significant, even at high temperatures if the relative humidity is high. They implemented the theory in an advanced computational fluid dynamics platform and studied the effects of weather conditions on airborne virus transmission. To address the challenge, the researchers developed theoretical correlations for the unsteady evaporation of coronavirus-contaminated saliva droplets. In that case, we can more accurately predict the virus concentration and better determine its viability or the potential for virus survival," said Dimitris Drikakis, one of the authors.ĭespite the importance of airborne droplet transmission, research regarding heat and mass transfer around and within respiratory droplets containing the virus has been scarce. "Suppose we have a better understanding of the evaporation and its relation to climate effects. They found that a critical factor for the transmission of the infectious particles, which are immersed in respiratory clouds of saliva droplets, is evaporation. In a paper in Physics of Fluids, by AIP Publishing, researchers studied the effects of relative humidity, environmental temperature, and wind speed on the respiratory cloud and virus viability.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |