Month of Ramadan Fasting for Many Muslims Begins Monday

Riyadh, Mar 25: A 46-year-old man died of coronavirus in Saudi Arabia, becoming the Kingdom’s second death, according to a health ministry’s spokesman.

The health ministry recorded 133 new infections, bringing the total to 900.

Of those newly confirmed cases, 18 are associated with recent travel, and were placed in quarantine upon their arrival in the Kingdom, the spokesman said.

Visakhapatnam, May 7: Andhra Pradesh Chief Minister Y S Jagan Mohan Reddy on Thursday announced an ex- gratia payment of Rs one crore each to the kin of those killed in the styrene gas leak incident at LG Polymers Limited near here.

The NDRF had put the death toll from the leak at 11.

The chief minister announced a committee to probe into the mishap and also said the government would talk to the LG Polymers management seeking job for the kin of the deceased in any of its businesses.

Speaking to reporters after conducting a review meeting, Reddy also announced Rs 10 lakh each to those undergoing treatment on ventilator support and Rs 25,000 to those who took treatment as out-patients after developing health complications due to inhalation of the styrene vapour.

Earlier, he held a review meeting at the Andhra Medical College with District Collector Vinay Chand and others.

The gas leak victims undergoing treatment in various hospitals would be paid Rs one lakh each. The 15,000-odd population in the five villages that were affected by the gas leak would be paid Rs 10,000 each, the chief minister added.

Reddy further announced constitution of a high-level committee, headed by the Special Chief Secretary (Environment and Forests), to probe into the mishap and make recommendations to prevent such tragedies in the future.

Earlier, he visited the King George Hospital and consoled the victims of the gas leak.

Accompanied by his Deputy holding the health portfolio A K K Srinivas and Chief Secretary Nilam Sawhney, Reddy flew down to the port city and went straight to the KGH.

He met the gas leak victims undergoing treatment and enquired about their well-being.

At the review meeting, the Collector informed the Chief Minister that the gas spread was limited to a 1.5 to 2 km area from the epicentre of the leak and that the locals were evacuated to safety.

Of the two styrene tanks in the plant, the leak occurred from one that was holding about 1,800 kilo litres of the chemical.

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.