Amit Shah to introduce Citizenship Amendment bill in Lok Sabha today

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, May 13: With an increase of 3,525 COVID-19 cases reported in the last 24 hours, India's tally of positive coronavirus cases rises to 74,281 cases, as of Wednesday, said the Ministry of Health and Family Welfare.

The tally is inclusive of 47,480 patients who are active coronavirus cases and 24,385 patients who have been cured/discharged and one patient migrated.

With an increase of 122 deaths due to COVID-19 reported in the last 24 hours, the number of deaths in the country now stands at 2,415.

According to the ministry, Maharashtra has the most number of positive COVID-19 cases with 24,427 positive cases that include 5,125 patients recovered and 921 fatalities.

Gujarat has reported 8,903 COVID-19 cases inclusive of 3,246 recovered patients and 537 deaths due to the coronavirus.

Tamil Nadu reported 8,718 positive coronavirus cases with 2,134 patients recovering from the disease and 61 succumbing to the infection.

Delhi's tally of COVID-19 cases stands at 7,639 cases with 2,512 patients recovering and 86 patients died due to coronavirus.

Meanwhile Arunachal Pradesh (one case reported--now recovered), Goa (seven cases reported--all seven recovered), Manipur (two cases reported--both recovered) and Mizoram (one case reported--now recovered) have reported no new cases of COVID-19.

Jan 18: To mark the 30th anniversary of the mass exodus of Kashmiri Pandits from the Valley, members of the community took to social media to post videos of themselves by narrating the "Hum Aayenge Apne Watan" dialogue from an upcoming flick, 'Shikara', with the hope that they would return to their homeland one day.

On January 19, 1990, lakhs of Kashmiri Pandits were forced to leave their homes in the Valley following a genocidal campaign launched by the terrorists.

Theatre actor Chandan Sadhu participated in the campaign and said that Kashmiri Pandits have shown "unimaginable resilience" and hope to return to the Valley soon.

"As Kashmiri Pandits complete 30 years in exile this weekend, let our cry for justice be finally noticed. We have shown unimaginable resilience, and today we resolve to return home. Kashmiri Pandit friends: please record this video statement and put it up with #HumWapasAayenge," Sadhu tweeted.

The #HumWapasAayenge is trending on Twitter as more and more Kashmiri Pandits joined in the campaign to narrate the "Hum Aayenge Apne Watan" dialogue and a pledge to return to their homes.

Noted political commentator Sunanda Vashisht tweeted a throwback image of herself and said that resolve to go back home has strengthened more.

"I don't have many pictures left of my childhood. Choosing between life and family albums is really no choice at all. When lives were rescued, family albums got left behind. 30 years have passed. Resolve to go back home has only strengthened. #HumWapasAayenge," she tweeted.

Radio personality Khushboo Mattoo tweeted a video repeating the dialogue from Shikara and tweeted, "Said this in a BBC interview three years back. And I am saying it again #HumWapasAayenge #Shikara."

Journalist Rahul Pandita also took to his Twitter and captioned his post saying, "30 years of exile from Kashmir. Let us now pledge that we will return home."

'Shikara' chronicles the exodus of Kashmiri Pandits from the Valley on the night of January 19, 1990. Helmed by Vidhu Vinod Chopra, the movie is slated to release on February 7.

Netizens have supported the initiative and have expressed solidarity with the Kashmiri Pandits.

In July last year, Home Minister Amit Shah said in the Rajya Sabha that the central government is committed to bringing Kashmiri Pandits and Sufis back to the Valley saying a time will come when they will offer prayers at the famous Kheer Bhawani temple.

"Kashmiri Pandits were forced to leave Kashmir. Many of their shrines were demolished. Sufism was targeted in Jammu and Kashmir. Sufism used to talk about unity and harmony but they were attacked. No voice was raised in favour of Kashmiri Pandits and Sufis when they were brutally attacked. Sufis used to talk about the unity among Hindus and Muslims but they were forced to leave the Valley. Narendra Modi-led government is committed to bringing back Kashmiri Pandits, he had said.

The Mata Kheer Bhawani temple is one of the holiest shrines of Kashmiri Pandits, located about 14 kilometres east of Srinagar.

Last September, a delegation of the Kashmiri Pandit community met the Prime Minister in Houston and thanked him for the historic decision to abrogate Article 370 that gave special status to Jammu and Kashmir.

Modi acknowledged the hardships endured by the community following their exodus from their ancestral homeland back in 1989-1990 due to militancy.

"You have suffered a lot, but the world is changing. We have to move ahead together and build a new Kashmir," the Prime Minister had told the delegation.

"I had a special interaction with Kashmiri Pandits in Houston," Modi had tweeted following the interaction.

In October, Union Minister Prakash Javadekar announced that the Centre has decided to provide compensation of Rs 5.5 lakh each to 5,300 displaced families from Pakistan-occupied Kashmir (PoK), who initially opted to move outside Jammu and Kashmir but later on returned.

These families were earlier left out in the rehabilitation package that was approved by the Cabinet on November 30, 2016.

The Prime Minister had announced a reconstruction plan for Jammu and Kashmir in November 2016. His plan included a rehabilitation package for a one-time settlement of 36,384 displaced persons' (DPs) families of PoK-1947 and Chhamb.