Kangana derides Congress, says Indians were slaves of Italy!

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.

New Delhi, Jan 26: Prime Minister Narendra Modi on Sunday extended his greetings to the people on the occasion of the 71st Republic Day.
"Wishing everyone a happy #RepublicDay," PM Modi tweeted in English as well as Hindi.

Celebrations will be held all across the country to mark the day.

On this day, 70-year back, India officially adopted its Constitution.

The 90-minute Republic Day ceremony will commence with Prime Minister Narendra Modi visiting the National War Memorial near the India Gate.

After paying tributes to the martyrs, the prime minister and others would head to the Rajpath.

The parade for the Republic Day will begin on Rajpath with President Ram Nath Kovind unfurling the national flag with a 21-gun salute.

Brazilian President Jair Messias Bolsonaro is the chief guest at the parade

India's military might, cultural diversity, social and economic progress will be displayed during the Republic Day celebrations.

For the first time, a contingent of women bikers of CRPF will perform daredevil stunts. The Dhanush artillery will also be displayed for the first time during the Republic Day parade.

New Delhi, May 15: In an attempt to constructively use leisure time during the lockdown, actor Bhumi Pednekar has started learning Kathak from her mother, Sumitra Pednekar, who is a trained dancer of this discipline.

Elaborating on her keenness to enhance her knowledge on the dance form, the actor explained about her routine followed for the dance practice and how much she is enjoying it.

"I wanted to learn kathak for a long time as my mother is a trained Kathak dancer! So, for about an hour in the evening this what I and my mom do. She is quite enjoying it and I'm loving learning it from her!" the 30-year-old actor said.

The growing fear of coronavirus has halted many entertainment shootings and productions. The 'Pati Patni Aur Who' actor referring to the current situation opened about the uncertainties of going back to shootings.

"It has put a big question mark on when will we get back to work and how things are going to be. There's a lot of uncertainty. Of course, our dates and schedules have gone haywire and we can't plan anything," she added.

However, the 'Bala' actor is finding a silver lining among the gloom as she says that the time has given her an opportunity to get back to what she used to love as a child - the habit of reading.

"I was a voracious reader but since entering Bollywood I haven't got a chance to read something at a stretch," she said.

"But now, I have got all the time and I'm making full use of the time at hand. I have been watching TED talks and have been reading a lot about climate change because that is something, I am severely passionate about. This time has been very educational for me," she added.

On the professional front, Pednekar will be soon seen as a leading lady in the Akshay Kumar's 'Durgavati' and award-winning director Alankrita Srivastava's 'Dolly Kitty Aur Woh Chamakte Sitaare'.