BJP activist shot dead in West Bengal's North 24 Parganas district

Chennai, Jun 10: DMK MLA J Anbazhagan who had tested positive for coronavirus and was on ventilator support from June 3 passed away at a hospital in Chennai on Wednesday.

Coincidently, today is the 62nd birthday of the MLA.

"Anbazhagan J, who has been fighting for his life with severe COVID 19 pneumonia rapidly deteriorated early this morning. In spite of full medical support including mechanical ventilation at our COVID facility, he succumbed to his illness. He was declared dead at 08:05 hours on the 10th of June 2020," the hospital said in a statement.

In 2001, Anbazhagan was elected from T Nagar Assembly constituency. He served for five years.

Later in 2011, he was elected to Tamil Nadu Assembly from Chepauk-Thiruvallikeni seat. The DMK leader was re-elected from the same constituency in 2016.

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.

Kozhikode, Jul 20: A 17-year old boy died of head injuries while trying to protect his mother from being assaulted by his drunk father here, police said on Sunday.

The youngster suffered the fatal injury after his head hit against the door when his father shoved him at their home on Saturday. Venu, had come home in an inebriated state and picked up a quarrel with his wife and started beating her up, they said.

On seeing this, Alan tried to intervene. Though the boy was rushed to the hospital, his life could not be saved, they added. Venu was arrested and a case has been registered.