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New Delhi, Jul 15: Air India has started the process of identifying employees, based on various factors like efficiency, health and redundancy, who will be sent on compulsory leave without pay (LWP) for up to five years, according to an official order.

The airline's board of directors have authorised its Chairman and Managing Director Rajiv Bansal to send employees on LWP "for six months or for a period of two years extendable upto five years, depending upon the following factors - suitability, efficiency, competence, quality of performance, health of the employee, instance of non-availability of the employee for duty in the past as a result of ill health or otherwise and redundancy", the order said on Tuesday.

The departmental heads in the headquarter as well as regional directors are required to assess each employee "on the above mentioned factors and identify the cases where option of compulsory LWP can be exercised", stated the order dated July 14.

"Names of such employees need to be forwarded to the General Manager (Personnel) in headquarter for obtaining necessary approval of CMD," the order added.

In response to queries regarding this matter, Air India spokesperson said,"We would not like to make any comment on the issue."

Aviation sector has been significantly impacted due to the travel restrictions imposed in India and other countries due to the coronavirus pandemic. All airlines in India have taken cost-cutting measures such as pay cuts, LWP and firings of employees in order to conserve cash flow.

For example, GoAir has put most of its employees on compulsory LWP since April.

India resumed domestic passenger flights from May 25 after a gap of two months due to the coronavirus pandemic.

However, the airlines have been allowed to operate only a maximum of 45 per cent of their pre-COVID domestic flights. Occupancy rate in Indian domestic flights has been around 50-60 per cent since May 25.

Scheduled international passenger flights continue to remain suspended in India since March 23.

The passenger demand for air travel will contract by 49 per cent in 2020 for Indian carriers in comparison to 2019 due to COVID-19 crisis, said global airlines body IATA on Monday.

New Delhi, Mar 4: The Supreme Court on Wednesday revoked the ban of cryptocurrency imposed by the Reserve Bank of India (RBI) in 2018.

Pronouncing the verdict, the three-judge bench of the apex court said the ban was 'disproportionate'.

The bench included Justice Rohinton Fali Nariman, Justice S Ravindra Bhat and Justice V Ramasubramanian.

The Internet and Mobile Association of India (IAMAI), whose members include cryptocurrency exchanges, and others had approached the top court objecting to a 2018 RBI circular directing regulated entities to not deal with cryptocurrencies.

Advocate Ashim Sood, appearing for IAMI, submitted that Reserve Bank of India lacked jurisdiction to forbid dealings in cryptocurrencies. The blanket ban was based on an erroneous understanding that it was impossible to regulate cryptocurrencies, Sood submitted.

The petitioners had argued that the RBI's circular taking cryptocurrencies out of the banking channels would deplete the ability of law enforcement agencies to regulate illegal activities in the industry.

IAMAI had claimed the move of RBI had effectively banned legitimate business activity via the virtual currencies (VCs).

The RBI on April 6, 2018, had issued the circular that barred RBI-regulated entities from "providing any service in relation to virtual currencies, including those of transfer or receipt of money in accounts relating to the purchase or sale of virtual currencies".

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.