Father chops off 18-year-old son’s hand for watching porn on phone

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.

New Delhi, Jun 9: Petrol price on Tuesday was hiked by 54 paise per litre and diesel by 58 paise a litre - the third straight daily increase in rates after oil PSUs ended an 82-day hiatus in rate revision.

Petrol price in Delhi was hiked to Rs 73.00 per litre from 72.46, while diesel rates were increased to Rs 71.17 a litre from Rs 70.59, according to a price notification of state oil marketing companies.

This is the third daily increase in rates in a row. Oil companies had on Sunday restarted revising prices in line with costs, after ending an 82-day hiatus.

Prices were raised by 60 paise per litre each on both petrol and diesel on Sunday as well as on Monday. In all, petrol price has gone up by Rs 1.74 per litre and diesel by Rs 1.78 a litre in three days.

Oil PSUs - Indian Oil Corp (IOC), Bharat Petroleum Corp Ltd (BPCL) and Hindustan Petroleum Corp Ltd (HPCL) - had put daily price revisions on hold soon after the government on March 14, hiked excise duty on petrol and diesel by Rs 3 per litre each.

Oil companies did not pass on that excise duty hike, as well as the May 6 increase in tax on petrol by Rs 10 per litre and Rs 13 a litre hike on diesel by setting them off against the decline in retail prices that should have effected to reflect international oil rates falling to two-decade low.

International rates have since rebounded and oil companies having exhausted all the margin are now passing on the increase to customers, an industry official said.

Khammam, Jun 29: In an outrageous incident, some youths beat up a monkey and strung it up on a tree to death while also releasing dogs to attack it in Ammapalem village in Telangana's Khammam district.

A video of the heinous incident of animal cruelty has surfaced on social media, in which the monkey is seen hanging by a rope from a tree, desperately flailing its limbs while a couple of dogs attempt to pounce on and torment the hapless simian. After a while, several men are seen in the video approaching the animal with long sticks.

Forest officials have charged one villager Venkateshwar Rao under Wildlife Protection Act along with the other accused and arrested them. They were released on bail on Saturday and are set to be summoned for questioning by forest officials.

Rao had spotted the monkey, which had entered his residence apparently in search of food and beat it with a stick and hung it from a tree with the help of his friend.

In the video of the incident, Rao could also be seen instructing his pet dogs to bite the monkey, which was fighting for its life.