According to Daily Mail, while previous studies focused on the dispersance of saliva drops in the air during coughing or sneezing, researchers from Stony Brook University, Harvard, ETH Zurich and Hanyang University are interested in how the drops spread during normal breathing.
The international research team used computer simulations of normal breathing to create cyclical saliva flows, at a rate of about 1/10 compared to a cough or sneezing.
Simulation shows that normal breathing can cause saliva drops to spread up to 2.2m in the air in just 90 seconds. However, when wearing masks, these drops of water can only fly 0.7m.
"Our results show that normal breathing without a mask will produce cyclical fluids and circulating circulation that transmit forward, interacting with the circulation generated in previous breathing cycles," said Ali Khosronejad, author of the study. The complex cyclone environment can transport water drops over a very long distance".
They also discovered that the saliva drops in the front of the air intake would partially evaporate and reach a size of only 1/10 micrometers. With the prison air suspended in the house, drops of this size will remain in the air for many days.
The research team said that masks can disrupt spinning and limit the movement of saliva drops. The website also has the effect of partially redirecting breathing downstream, reducing the risk of floating drops in the air.
Ms. Khosronejad added: "To simplify the breathing process, we did not consider the flow of the air- foam mixture through our nose but only considered the flow through our mouths. In future studies, we will explore the effects of normal breathing through both the nose and mouth."
The team hopes these findings will encourage people to be more aware of wearing masks and social isolation.
Lao Dong Newspaper, the Golden Heart Social Charity Fund and the Health Sector Trade Union officially launched the "GREEN WORK WORK" Program. The program hopes to contribute a small part to support and create more strength for those who contribute, sacrifice, and volunteer day and night for the people and the country.
The program calls for support from all individuals, organizations, agencies and units. Your contributions will be transferred to support doctors, nurses, and health workers to contribute to sharing difficulties and solidarity in fighting the epidemic.
All support should be sent to the Lao Dong Golden Heart Fund in one of the following forms:
