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Jan 15: Amazon.com Inc Chief Executive Officer Jeff Bezos is facing a bitter welcome during his India visit this week as the country’s antitrust regulator initiated a formal investigation just hours before his arrival and trader bodies comprising millions of infuriated small store owners announced demonstrations.

Bezos is in New Delhi for the Smbhav summit, an Amazon India event for small and medium businesses. The billionaire is scheduled to conduct a fireside chat with Amazon India chief Amit Agarwal, anchoring an event that also features Infosys Ltd. co-founder Narayana Murthy and retail billionaire Kishore Biyani, who recently sold a stake in his retail group to Amazon. Ahead of the event, Bezos paid his respects at Mahatma Gandhi’s memorial, wearing a white tunic and a rust-colored Indian vest.

The small businesses that Amazon’s CEO is hoping to endear himself to, however, are organizing in opposition. The Confederation of All India Traders announced that members of its affiliate bodies across the country would stage sit-ins and public rallies in 300 cities to raise a war cry against the world’s largest online retailer. In a letter to Prime Minister Narendra Modi last week, the confederation’s Secretary General Praveen Khandelwal alleged that Amazon, much like Walmart Inc.-owned Flipkart, was an “economic terrorist” who engaged in predatory pricing that deprived the government of tax revenue and “compelled the closure of thousands of small traders.”

India’s e-commerce market is projected to grow to $150 billion by 2022, according to a 2018 report by software industry group Nasscom and consulting firm PwC India. Competition for this rapidly expanding sector is intensifying as Asia’s richest man, Mukesh Ambani, prepares to go live with JioMart, an online shopping platform challenging Amazon and Walmart directly. The latter’s Flipkart Online Services Pvt is also delving deeper into the countryside in its pursuit for more customers. Amazon, for its part, opened a huge office complex in the southern city of Hyderabad in September, underscoring its commitment to the country.

The Competition Commission of India said it would probe the deep discounts, preferential listings and exclusionary tactics that Amazon and Flipkart are alleged to have used as anti-competitive levers. India’s trade bodies have long argued that both retail giants were flouting rules by promoting sales and discounts through their favoured sellers, many of whom they have preexisting commercial arrangements. The regulator has ordered for the investigation to be completed within two months.

Bezos last visited India in 2014 under starkly different circumstances. During that trip, the Amazon founder wore local festive garb, rode atop a festooned truck for a photo opp and presented Amazon’s Indian unit with a giant check for $2 billion. Since then, Amazon has pledged a further $3.5 billion to expand in the country.

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.