Minor hit by car in UP minister's fleet, dies; CM announces Rs 5L ex gratia

New Delhi, Jan 22: Delhi Chief Minister Arvind Kejriwal has assets worth Rs 3.4 crore, an increase of Rs 1.3 crore from 2015, according to his election affidavit.

Kejriwal's total assets were worth Rs 2.1 crore in 2015.

The cash and fixed deposits of Kejriwal's wife Sunita Kejriwal increased from Rs 15 lakh in 2015 to Rs 57 lakh in 2020.

A party functionary said Rs 32 lakh worth cash and fixed deposits have been received by Sunita Kejriwal as voluntary retirement benefits while the rest are savings.

The cash and fixed deposits of the chief minister increased from Rs 2.26 lakh in 2015 to Rs 9.65 lakh in 2020.

There was no change in the value of immovable assets of his wife while Kejriwal's immovable assets' worth increased from Rs 92 lakh to Rs 177 lakh.

The party functionaries said increase in Kejriwal's immovable assets' worth is due to the increased valuation of the same asset as in 2015.

New Delhi, Jul 14: India's COVID-19 tally has reached 9,36,181 as 29,429 new coronavirus cases were reported in the last 24 hours, informed the Union Ministry of Health and Family Welfare on Wednesday.

The death toll went up to 24,309, including 582 fatalities in the last 24 hours.

Out of the total cases, 3,19,840 are currently active and 5,92,032 are cured/discharged/migrated.

As per the Ministry, Maharashtra -- the worst-affected state from the infection -- has a total of 2,67,665 COVID-19 cases and 10,695 fatalities. While Tamil Nadu has a tally of 1,47,324 cases and 2,099 deaths due to COVID-19.

Delhi has reported a total of 1,15,346 cases and 3,446 deaths due to COVID-19.

As per the information provided by the Indian Council of Medical Research (ICMR) 3,20,161 samples have been tested for COVID-19 till July 14, of these 1,24,12,664 samples were tested on Tuesday.

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.