"Now, BJP MPs Take Two Steps Back On Seeing Me," Says Rahul Gandhi

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.

Mumbai, Jan 10: India’s oil demand growth is set to overtake China by mid-2020s, priming the country for more refinery investment but making it more vulnerable to supply disruption in the Middle East, the International Energy Agency (IEA) said on Friday.

India’s oil demand is expected to reach 6 million barrels per day (bpd) by 2024 from 4.4 million bpd in 2017, but its domestic production is expected to rise only marginally, making the country more reliant on crude imports and more vulnerable to supply disruption in the Middle East, the agency said.

China’s demand growth is likely to be slightly lower than that of India by the mid-2020s, as per IEA’s China estimates given in November, but the gap would slowly become bigger thereafter.

“Indian economy is and will become even more exposed to risks of supply disruptions, geopolitical uncertainties and the volatility of oil prices,” the IEA said in a report on India’s energy policies.

Brent crude prices topped USD 70 a barrel on rising geopolitical tensions in the Middle East, putting pressure on emerging markets such as India. Like the rest of Asia, India is highly dependent on Middle East oil supplies with Iraq being its largest crude supplier.

India, which ranks No 3 in terms of global oil consumption after China and the United States, ships in over 80 per cent of its oil needs, of which 65 per cent is from the Middle East through the Strait of Hormuz, the IEA said.

The IEA, which coordinates release of strategic petroleum reserves (SPR) among developed countries in times of emergency, said it is important for India to expand its reserves.

REFINERY INVESTMENTS

India is the world’s fourth largest oil refiner and a net exporter of refined fuel, mainly gasoline and diesel.

India has drawn plans to lift its refining capacity to about 8 million bpd by 2025 from the current about 5 million bpd.

The IEA, however, forecasts India’s refining capacity to rise to 5.7 million bpd by 2024.

This would make “India a very attractive market for refinery investment,” IEA said.

Drawn to India’s higher fuel demand potential, global oil majors like Saudi Aramco, BP, Abu Dhabi National Oil Co and Total are looking at investing in India’s oil sector.

Saudi Aramco and ADNOC aim to own a 50 per cent stake in a planned 1.2-million bpd refinery in western Maharashtra state, for which land is yet to be acquired.

New Delhi, Jun 18: Prime Minister Narendra Modi on Thursday launched the auction process for 41 coal blocks for commercial mining, a move that opens India’s coal sector for private players, and termed it a major step in the direction of India achieving self-reliance.

Launching the auction of mines for commercial mining, that is expected to garner ₹33,000 crore of capital investment in the country over next five to seven years, the Prime Minister said India will win the coronavirus war and turn this crisis into an opportunity, and the pandemic will make India self-reliant.

The launch of the auction process not only marks the beginning of unlocking of the country’s coal sector from the lockdown of decades , but aims at making India the largest exporter of coal, the Prime Minister said.

Presently, despite being the world’s fourth largest producer, he said India is the second largest importer of the dry-fuel.

“Allowing private sector in commercial coal mining is unlocking resources of a nation with the world’s fourth-largest reserves,” he pointed out.

Major scams had taken place in coal action earlier, but the system has been made “transparent” now, the Prime Minister said lambasting past policies of keeping the sector closed.

Mr. Modi said that this auction process will result in major revenues to states and create employment besides developing the far-flung areas.

The commencement of auction process of these blocks, part of the series of announcements made under ‘Atmanirbhar Bharat Abhiyan’, is likely to contribute ₹20,000 crore revenues annually to the state governments.

In line with the Prime Minister’s self-reliance call, the aim behind the auction process is to achieve self-sufficiency in meeting energy needs and boosting industrial development.

The government has taken an important decision to open up coal and mining sector to competition, capital and technology, he said.

Coal and Mines Minister Pralhad Joshi, who was also be present during the launch event, said ₹50,000 crore is being invested in the sector to jack up India’s coal output to 1 billion tonne.

With a view to achieve self-reliance in the coal sector, the Ministry of Coal in association with FICCI launched the process of auction of 41 coal mines under the provisions of Coal Mines (Special Provisions) Act and Mines and Minerals (Development and Regulation) Act.

Upon attainment of peak rated capacity of production of 225 million tonnes (MT), the government said, these mines will contribute about 15% of the country’s projected total coal production in 2025-26.

It will also lead to employment generation for more than 2.8 lakh people — direct employment to approximately 70,000 people and indirect employment to approximately 2,10,000 people, as per the government.