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Bengaluru, Feb 19: Playing down the simmering discontent among the disgruntled legislators who missed a cabinet berth again, Karnataka BJP on Tuesday denied any revolt brewing against Chief Minister B.S. Yediyurappa.

"An unsigned letter in Kannada circulating in the social media is bogus, as it was fabricated in the name of Santosh, a private secretary to Yediyurappa. No revolt is brewing against the Chief Minister," party spokesman G. Madhusudhana told news agency here.

In the second cabinet expansion on February 6, only 10 newly-elected legislators, who defected from the Congress and the Janata Dal-Secular (JD-S) in July, were inducted, leaving the party's many aspiring lawmakers miffed.

"The talk of about 20 loyal MLAs ganging up against Yediyurappa is a speculation as rumour mills are working overtime. No rebellion is brewing against the Chief Minister," asserted the official.

On the charge that Yediyurappa's younger son B.Y. Vijayandra was acting like a 'super or de facto CM' and medalling in the state administration, Madhusudhana said the latter was only assisting his father in party activities as he was also a party worker.

"As Yediyurappa is 76 years old and ageing, Vijayandra is helping his father in party affairs so that he (Chief Minister) could be free to attend to administration," Madhusudhana said.

Yediyurappa's elder son B.Y. Raghavendra is a three-time BJP Lok Sabha member from Shimoga in the state's Malnad area.

With six cabinet posts vacant in the 34-member ministry, many legislators, including eight-time MLA Umesh Katti, are upset that they have not been rewarded for their loyalty to the party even six months after the BJP returned to power again in the southern state.

On the purported meeting of about 20 BJP MLAs at the residence of state Industries Minister Jagadish Shettar here on Monday, Madhusudhana said it was a "get-together" as they were all in Bengaluru again to attend the budget session of the state legislature which began on Monday.

"There is no crisis in the party. Our government is stable and will complete the remaining three-year term in office till May 2023," he added.

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.

Mysore,  Apr 1: A team of the state Health Ministry on Monday visited the pharmaceuticals company whose several employees were tested positive for COVID-19.

The team asked the remaining employees to stay under quarantine in separate rooms.

"The department is investigating whether this company has got any connection with China or received any object which might have brought coronavirus with it," said Jawaid Akhtar, principal secretary of the health department.

Karnataka Health Minister on Wednesday confirmed that the current COVID-19 positive cases in the state stood at 101.

According to the Ministry of Health and Family Welfare, the total number of COVID-19 positive cases have reached 1,637 in India, including 1,466 active cases, 133 cured/discharged/migrated people and 38 deaths.