Varavara Rao tests coronavirus positive

Bhopal, Mar 4: Madhya Pradesh Chief Minister  Kamal Nath on Tuesday asserted that there was no threat to his government.

Nath's comments came when he was asked about reports of alleged 'poaching' attempts being made by the opposition BJP in the state.

“The legislators are telling me that they are being offered so much money. I am telling the MLAs to take it, if they are getting this free money,” Nath told reporters here on the sidelines of a programme.

Congress veteran Digvijaya Singh on Monday alleged that his party MLAs were being offered “huge money by BJP leaders” as part of the saffron party's “poaching” attempt to destablise the Kamal Nath government.

When Nath was asked about any threat to the stability of his government in Madhya Pradesh, he said, “There is nothing to worry about.”

Reacting to Nath's statement, state BJP spokesman Rajneesh Agrawal told PTI that his party has nothing to do with the allegations.

“In fact, these speculations and allegations are part of the internal bickering of among Congress leaders to get nominated for the Rajya Sabha polls,” he said.

After Digvijaya Singh's remarks on Monday, senior BJP leader and former chief minister Shivraj Singh Chouhan accused the Congress veteran of making false statements to create sensationalism.

“Speaking lies to create sensationalism is Digvijaya's habit. Probably some of his (Digivijaya's) works were not done and he wants to create pressure on the CM to get them done,” Chouhan alleged.

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.