Video of BJP minister peeing on roadside goes viral

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.

Rajghat, Feb 23: The maternal uncle of Dr Kafeel Khan, who was recently arrested for allegedly making inflammatory statements during anti-CAA protests, was shot dead in front of his house at Bankatichak in Rajghat area, police said on Sunday.

Dr Nusratullah Warsi aka Dada (55), a property dealer, was shot dead on Saturday night at about 10:45 pm and an FIR against two people was filed in this connection on a written complaint of his family members.

According to police, it appears to be a case of murder due to monetary and property dispute and they are searching for both the accused.

Dr Kafeel Khan, suspended doctor of Gorakhpur BRD Medical College, was last month arrested under charges of giving a provocative speech during a protest against the CAA and NRC at Aligarh Muslim University and was later charged with the National Security Act.

Warsi on Saturday evening had gone to his lawyer Siraj Tariq's house, a few metres away from his own house, and was returning home on foot when a man shot him in his head, killing him on the spot.

"On the written complaint of family members, case of murder against one Imammuddin and Anil Sonkar has been registered and police has initiated probe and is searching for both the accused. Police met the women in their house and is interrogating them," Circle Officer VP Singh said.

Prima facie it appears to be a case of property and money dispute, he said, adding, three teams have been constituted to investigate the case and soon the accused will be caught.

Dr Kafeel Khan had last month raised apprehension in a Mumbai court about being killed in an "encounter" by the Uttar Pradesh police after claiming that he had been "falsely" implicated in the case by them.

The paediatrician had come to the limelight in 2017 when a controversy broke out after the death of over 60 children in less than a week at the BRD Medical College in Gorakhpur in Uttar Pradesh, where he was posted.

New Delhi, Apr 17: A total of 3,336 Indians tested positive for coronavirus in 53 countries while 25 others died of the infection, government sources said on Thursday.

They said the Indians stranded abroad will have to be patient as the government is not evacuating them as part of a larger policy decision to check the spread of the coronavirus in the country.

"They need to be patient and stay where they are. Our missions have been told to extend all possible help to the stranded Indians," said a source.

According to the sources, evacuation of around 35,000 foreign nationals from 48 countries has been facilitated so far from India.

The sources said the majority of Indians who tested positive for the coronavirus infection are living in the Gulf region. A sizeable number of Indians staying in France and the US have also tested positive.

They said that Indian missions in the Gulf region have been told to extend all possible assistance to the Indians in distress.

Around eight million Indians are living in the Gulf countries and there has been growing anxiety among them over their livelihood in view of the pandemic as it has majorly impacted the oil-driven economy of the region.

Almost all Gulf countries have taken a series of drastic measures including imposing total lockdown, travel restrictions and even closing borders to stem the spread of the coronavirus infection.

The United Arab Emirates has already warned of possible action against countries refusing to allow their citizens to return.

Around 3.3 million Indians are living in the UAE and they constitute roughly 30 per cent of the country's population. Among the Indian states, Kerala is the most represented followed by Tamil Nadu and Andhra Pradesh.

A large number of Indians are working in the construction sector in Qatar which is hosting the FIFA World Cup in 2022.

As a matter of policy, India has decided not to bring back the stranded Indians from abroad till the nationwide lockdown ends.

The issue of Indians in Gulf region figured prominently during Prime Minister Narendra Modi's video conference with heads of Indian missions abroad on March 30.

Welfare of Indians in the Gulf was the major focus area in the discussions Modi had with leaders of countries in the region over the last few weeks, officials said.