Indian-origin loses job for posting torn Singapore flag

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 18: Senior advocate Indira Jaising urged the mother of Nirbhaya to pardon the men on death row who were convicted for the 2012 gang rape of her daughter.

Jaising took to Twitter to make the request shortly after Asha Devi on Friday expressed her disappointment following a Delhi court postponed the date of the execution of the four convicts.

"While I fully identify with the pain of Asha Devi I urge her to follow the example of Sonia Gandhi who forgave Nalini and said she didn't not want the death penalty for her. We are with you but against the death penalty," Jaisingh tweeted.

While I fully identify with the pain of Asha Devi I urge her to follow the example of Sonia Gandhi who forgave Nalini and said she didn’t not want the death penalty for her . We are with you but against death penalty. https://t.co/VkWNIbiaJp

— Indira Jaising (@IJaising) January 17, 2020

Asha Devi lashed out at Jaisingh suggesting pardon for the convicts. "I can't believe how Indira Jaising even dared to suggest such this. I met her many times over the years in Supreme Court, not once she asked for my wellbeing and today, she is speaking for convicts. Such people earn livelihood by supporting rapists, hence rape incidents don't stop," Asha Devi told ANI.

Nalini was arrested and convicted for her role in the assassination of former prime minister Rajiv Gandhi in 1991.

Earlier on Friday Asha Devi had lashed out at the courts and the government stating that "the same people who had in the year 2012 gone around participating in rallies and raised slogans for women's safety are playing with the death of my daughter for their political gains. They have stopped the execution for their political gains."

The death-row convicts who were earlier slated to be executed on January 22 at 7 am are set to be hanged on February 1 at 6 am.

Asha Devi rued that the convicts got what they wished for. "I will not be satisfied until they are hanged," she added.

Four convicts, Vinay, Akshay, Pawan and Mukesh were convicted and sentenced to death for raping a 23-year-old woman in a moving bus in the national capital on the intervening night of December 16-17, 2012.

The victim, who was later given the name Nirbhaya succumbed to injuries at a hospital in Singapore where she had been airlifted for medical treatment.

Mumbai, May 27: The Maharashtra government on Tuesday ordered re investigation by the CID into the suicide of a 53-year-old interior designer and his mother, allegedly over non-payment of dues by TV journalist Arnab Goswami and two others.

State Home Minister Anil Deshmukh said he ordered re investigation after Adnya Naik, daughter of interior designer Anvay Naik, claimed that Alibag Police in neighbouring Raigad district did not probe the non-payment of dues which had driven her father and grandmother to suicide.

"Adnya Naik had complained to me that #AlibaugPolice had not investigated non-payment of dues from #ArnabGoswami's @republic which drove her entrepreneur father & grandmom to suicide in May 2018," Deshmukh tweeted.

"I've ordered a CID re-investigation of the case," the minister, an NCP leader, added.

He also used the hashtag "Maharashtra government cares" while sharing the tweet. Earlier this month, the police registered an abetment of suicide case against Republic TV editor-in-chief Goswami and two others.

The suicide note purportedly written by Anvay Naik, managing director of Concorde Designs Private Limited, said he was forced to take his life as he was not paid dues of Rs 5.40 crore by the three accused.

Republic TV denied the allegation and said that certain vested interest groups were running "a false and malicious campaign and making false statements and innuendos against the company by exploiting the tragic event".

Mumbai Police are also conducting a probe against Goswami over his statements about the Palghar lynching case of April this year.