1,100 Jet Airways pilots decide not to fly from Monday

London, May 20: The current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, according to a study which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Researchers, including those from the University of Nicosia in Cyprus, said a good baseline for studying the airborne transmission of viruses, like the one behind the COVID-19 pandemic, is a deeper understanding of how particles travel through the air when people cough.

In the study, published in the journal Physics of Fluids, they said even with a slight breeze of about four kilometres per hour (kph), saliva travels 18 feet in 5 seconds.

"The droplet cloud will affect both adults and children of different heights," said study co-author Dimitris Drikakis from the University of Nicosia.

According to the scientists, shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets.

They said saliva is a complex fluid, which travels suspended in a bulk of surrounding air released by a cough, adding that many factors affect how saliva droplets travel in the air.

These factors, the study noted, include the size and number of droplets, how they interact with one another and the surrounding air as they disperse and evaporate, how heat and mass are transferred, and the humidity and temperature of the surrounding air.

In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person.

The model considered the effects of humidity, dispersion force, interactions of molecules of saliva and air, and how the droplets change from liquid to vapour and evaporate, along with a grid representing the space in front of a coughing person.

Each grid, the scientists said, holds information about variables like pressure, fluid velocity, temperature, droplet mass, and droplet position.

The study analysed the fates of nearly 1,008 simulated saliva droplets, and solved as many as 3.7 million equations.

"The purpose of the mathematical modelling and simulation is to take into account all the real coupling or interaction mechanisms that may take place between the main bulk fluid flow and the saliva droplets, and between the saliva droplets themselves," explained Talib Dbouk, another co-author of the study.

However, the researchers added that further studies are needed to determine the effect of ground surface temperature on the behaviour of saliva in air.

They also believe that indoor environments, especially ones with air conditioning, may significantly affect the particle movement through air.

This work is important since it concerns safety distance guidelines, and advances the understanding of the transmission of airborne diseases, Drikakis said.

Thiruvananthapuram, Apr 26: Kerala Chief Minister Pinarayi Vijayan on Saturday urged media houses not to resort to layoffs and pay cuts while the whole community is facing the COVID-19 pandemic.

The Chief Minister said the state government will also take necessary steps to test the media personnel in the state to ensure they have not contracted the deadly virus.

He also pointed out that the pandemic has severely impacted the media sector with many newspapers even reducing the number of pages.

"Journalists are among those who have been affected the most. Journalists on the field are also in danger. We have come to know about the reporters affected with coronavirus in other states. The government will take necessary precautions including testing to ensure that journalists don't contract the disease," Vijayan said.

He said the newspapers were not receiving advertisements these days because there are no social or public events resulting in less commercial activities in the society.

"I would like to urge the media houses not to engage in layoffs or salary cuts during this pandemic. Journalists are working shoulder to shoulder with health workers. During this pandemic, scribes are out in the field collecting news, despite the threat of disease and it was admirable," Vijayan said.

The chief minister said the government has asked the PRD to release the dues to various media houses.

Hyderabad, Jul 12: Hyderabad MP and All India Majlis-e-Ittehad-ul-Muslimeen chief Asaduddin Owaisi on Saturday condemned the demolition of a mosque and a temple inside the Secretariat building. He demanded the arrest of the contractor for demolition.
"During the process of demolition of the Secretariat building in Telangana, the mosque and temple were also demolished. The contractor must be booked and should be arrested. The public should know that we condemn this," he said while speaking to news agency.
Pointing out that his party MLAs Akbaruddin Owaisi and Moazam Khan have urged the state Assembly to look into the matter, he added, "We are not against the building of a new Secretariat, but what we asked for is not to destroy these structures during the process."
He welcomed the Chief Minister's announcement regarding the rebuilding of these structures.
"We expect the mosque to be built in the exact same place where it once stood. We expect the Chief Minister to speak to the representatives and meet our expectations and emotions about the mosque," he added.