Trump describes Pulwama attack as 'horrible situation'

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, Mar 19: Former Chief Justice of India Ranjan Gogoi took oath as Rajya Sabha MP on Thursday.

Gogoi's wife Rupanjali Gogoi, daughter, and son in law were also present in Parliament.

Congress staged a walkout from the Rajya Sabha over Gogoi's membership to the House.

Meanwhile, Union Minister Ravishankar Prasad welcomed Gogoi in the Rajya Sabha.

President Ram Nath Kovind had nominated the former CJI to the Rajya Sabha on March 16.

Gogoi served as the 46th Chief Justice of India from October 3, 2018, to November 17, 2019.

On November 9, 2019, a five-judge Bench headed by him had delivered the verdict in the long-pending Ramjanmabhoomi case.

New Delhi, Feb 5: Days after a gunman opened fire in Delhi's Shaheen Bagh, the epicentre of anti-CAA movement, YouTuber Gunja Kapoor was detained at the protest site on Wednesday after she was caught covertly filming the protests in a burqa.

Kapoor runs the channel ‘Right Narrative’ on YouTube and her pinned tweet on Twitter says she is followed on the microblogging site by PM Narendra Modi.

According to police, the protesters turned suspicious after Kapoor asked them "too many questions". She was caught by some of the women protesters after they identified her as the popular YouTuber. The incident led to a commotion at Shaheen Bagh, the epicentre of protests against the Citizenship Amendment Act (CAA), a senior police official said.

#WATCH Political analyst Gunja Kapoor extricated by police after protestors at Delhi's Shaheen Bagh alleged that she was wearing a 'burqa' and filming them. #Delhi pic.twitter.com/llRiKhMvOd

— ANI (@ANI) February 5, 2020

She was taken to Sarita Vihar police station where her identity was ascertained, police said.

The incident sparked outrage on social media. Many took to Twitter to question why Kapoor was at the protest in disguise. Others expressed concern about her motives at secretly filming the protests.

Chaos at #ShaheenBaghProtest when a burka clad woman caught while making some video from her mobile. She is found out to a be a YouTuber. Objection was why she was covering the protest wearing burka. @DelhiPolice has detained her pic.twitter.com/W3Ypdey9il

— alok singh (@AlokReporter) February 5, 2020

Meanwhile, praises flew in for the women of Shaheen Bagh who can be seen defending Kapoor from angry protesters after she was caught.

This is not the first time that a right wing social media activist has landed in trouble in Shaheen Bagh where residents and other women and children have been sitting in protest for nearly two months since the passing of the contentious Citizenship Amendment Act 2019 in December last year.

A burka clad lady @gunjakapoor is caught in #ShaheenBaghProtest site,disguised as a Muslim.
She hs 20k+ followers in @twitter & one among them is PM.
Why BJP sent a prominent face like her & nt a small worker?
Why BJP is so scared?
What’s BJP plan?Mass murder?@IndiasMuslims

— Seerat Raza (@iamseeratraza) February 5, 2020

In January, Deepa Sharma had posted videos online about the "traumatic" experience she had when she was allegedly heckled and harassed by Shaheen Bagh protesters. While the woman's claim could never be verified, other pieces of rampant fake news aimed at delegitimising and villainising protesters has taken social media by storm.

A right wing activist caught in Shaheen Bagh trying to infiltrate by wearing a Burkha and faking her name

She is “Proud to be followed by Modi” on Twitter pic.twitter.com/l1zklov0io

— Dhruv Rathee (@dhruv_rathee) February 5, 2020

From doctored videos of women protesters allegedly accepting they were paid Rs 500 to attend protests to alleged fights over biriyani and anti-India sloganeering, trolls on social media seem to be working overtime to taint the ongoing protests.

The latter, however, show no signs of giving up. In fact, as Delhi nears elections on February 8, protesters have arranged for music performances by eminent artists, including pop celebrity Prateek Kuhad, till February 7.

Sit in protests take place 24x7 with women showing up in thousands to spend the night and sing songs of protest. And with polls around the corner, the protests have become an active part of political discourse with Aam Aadmi Party's Manish Sisodia expressing his support for the protesters at a recent press conference.