London: PM Modi says, Indians have become more aspirational under his rule

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 26: The total number of people who have been confirmed positive for COVID-19 in India has risen to 649 in India, including 593 active cases and 42 people who have been cured or discharged from hospitals, according to the recent update by the Union Ministry of Health and Family Welfare (MoHFW) on Thursday morning.
The death toll due to the novel coronavirus in the country has reached 13, the official data reported. There have been 3 more deaths due to COVID-19 reported in the country since last evening.
An 85-year-old woman in Gujarat died yesterday while with the passing away of a 65-year-old woman, Madhya Pradesh reported its first COVID-19 death. Tamil Nadu also reported its first death in the state yesterday due to the deadly infection.
According to report from the Indian Council of Medical Research (ICMR) India had tested 24,254 people as of 8 p.m. on March 25.
The country is now in its second day of a 21-day lockdown that was announced by the Prime Minister Narendra Modi on Tuesday to deal with the spread of coronavirus, saying that "social distancing" is the only option to deal with the disease, which spreads rapidly.
The central government had on Wednesday announced that it will provide 7 kg ration to 80 crore people in India. The Centre also said that it has earmarked Rs 1.80 lakh crores for providing wheat at Rs 2 per kg and rice at Rs 3 per kg
"Union Cabinet has decided to provide wheat at Rs 2 per kg which is worth Rs 27 per kg and rice at Rs 3 per kg which is worth Rs 37 per kg. A total amount of Rs 1 lakh 80 thousand crores is being spent for the cause. The amount will be given in advance to the states for the coming 3 months," Union Minister Sadananda Gowda said yesterday.
Those shops which are catering to essential services will continue doing so during the 21-day nationwide lockdown.

Bhopal, Mar 13: The Madhya Pradesh Economic Offences Wing (EOW) on Thursday decided to verify facts afresh in a complaint against former Union Minister Jyotiraditya Scindia and his family, in which they are accused of falsifying a property document while selling land.

The development came after Mr Scindia quit the Congress and joined the BJP on Wednesday. 22 MLAs who belong to his camp also resigned, threatening the survival of the Kamal Nath government in the state.

"Yes, an order has been given for re-verification of facts in the complaint filed by Surendra Shrivastava," an Economic Offences Wing official told PTI.

An EOW release said Mr Shrivastava on Thursday filed a new complaint against Mr Scindia and his family, alleging that by falsifying a registry document, they sold him a piece of land at Mahalgaon which was smaller by 6,000 sq feet than the original agreement in 2009.

He had lodged the complaint first on March 26, 2014. But it was investigated and closed in 2018, the EOW official said. "As he again petitioned us today, we will re-verify the facts," the officer said.

Jyotiraditya Scindia's close aide Pankaj Chaturvedi alleged that it was political vendetta.

"The case had been closed for want of evidence. Now for vengeance, it is being reopened. We have full faith in the Constitution and law. We will get justice and Kamal Nath government a befitting reply," Mr Chaturvedi said.