Rotomac promoter Vikram Kothari flees after Rs 800-cr bank fraud?

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.

Motera, Feb 23: A day before US President Donald Trump's visit to Ahmedabad, a makeshift VVIP entry gate erected outside the newly-built cricket stadium in Motera area here collapsed due to gusty winds on Sunday morning, an official said.

The entire incident was recorded by a bystander and aired on local television channels.

The makeshift entry gate was made of welded steel rods and covered in flex banners.

After some time, a portion of another makeshift gate structure at the stadium's main entrance also collapsed due to the windy weather, another official said.

No one was injured in both the incidents and work was underway to put the structures back in place, he said.

"The (VVIP) entry gate collapsed when fabrication work was going on. It was not a major incident. No one was injured in the incident," said Special Commissioner of Police, Crime Branch, Ajay Tomar said.

President Trump and Prime Minister Narendra Modi will participate in a roadshow here on Monday and later address the 'Namaste Trump' event at the Sardar Patel Stadium in Motera area where over one lakh people are expected to be present.

The stadium has already received 'Building Use' permission from the Ahmedabad Municipal Corporation, an official earlier said.

It is the world's largest stadium with a capacity to accommodate 1.10 lakh spectators.

The stadium has been rebuilt after demolishing the old one which had a seating capacity of 49,000 spectators.

Jan 15: Uttar Pradesh Chief Minister Yogi Adityanath said on Tuesday that the Muslim population in India increased manifold since the partition because they were given special rights and facilities, according to a report by The Indian Express.

"The Muslim population in India has increased manifold since 1947, it has gone up by seven to eight times. No one has any objection. If they, as citizens of the country, work for development, they are welcome. Their population has increased because they have been given special rights and facilities. All possible steps were taken to ensure their growth," Adityanath said while addressing a rally in Gaya organised by the BJP in support of the Citizenship (Amendment) Act.

He asked the audience, "But what happened in Pakistan?" Claiming that the Hindu population in Pakistan had decreased since 1947, he asked why it was so.

Yogi said that the countrywide anti-CAA protests are a "conspiracy" hatched from afar by those resentful of a united and grand India and these are being aided by a "crooked" opposition. He further charged that those opposing the legislation were committing the "paap" (sin) of working against national interests.

"For taking such a step, Prime Minister Narendra Modi and Home Minister Amit Shah deserve acclaim. Instead, they are being attacked", Yogi lamented.