Hope no Kejriwal will emerge from my movement again: Anna Hazare

New Delhi, Feb 1: India on Friday banned the export of personal protection equipment such as masks and clothing amid a global coronavirus outbreak.

It did not give a reason for the ban but it reported its first case of the new coronavirus on Thursday, a woman in Kerala who was a student of Wuhan University in China.

The central Chinese city of Wuhan is the epicentre of the outbreak, and the virus has since spread to more than 9,800 people globally and killed 213 people in China.

Several Indian citizens living in Wuhan will arrive in India by plane on Saturday and be taken to a quarantine centre on the outskirts of the capital New Delhi.

India, the world’s second most heavily populated country after China, has taken measures to ensure that all people arriving from China report to health authorities.

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, July 10: Hours before gangster Vikas Dubey was killed in an alleged police encounter on Friday, a plea was filed in the Supreme Court demanding urgent listing for action into his "possible killing" by Uttar Pradesh Police.

Advocate Ghanshyam Upadhyay had apprehended in his plea that there is a high possibility that Dubey will also be killed in a 'fake' encounter after his arrest from Ujjain in Madhya Pradesh a day ago.

Upadhyay claimed that the UP Police was expected to "concoct the same story of encounter" for Dubey like it did when four of his associates were killed after the 2 July incident.

Dubey was the primary accused in the killing of eight policemen in Kanpur on July 2. He was arrested from Ujjain on Thursday. He was killed in a police encounter, when he allegedly tried to flee on Friday morning.

"During the hunt for Dubey and co-accused, five of his accused aides were arrested/caught and then killed by the police in the name of encounter...Thus, there is every possibility that even Dubey shall be killed by Uttar Pradesh Police like other co-accused once his custody is obtained," Upadhyay feared.

He submitted that the killing of the accused by the police in the name of encounter no matter how heinous the crime was "against the rule of law and serious violation of human rights and nothing sort of Talibanisation of the country". Upadhyay sought hearing in the matter on Friday itself, citing extreme urgency.