No runway expansion at Mangaluru Airport for now

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, Apr 29: Karnataka is likely to withdraw the case filed against a CRPF commando who was arrested by state police officials for alleged assault on them during COVID-19 lockdown duty in Belgaum, a charge contested by the paramilitary Central Reserve Police Force.

In a bid to diffuse the ongoing tussle between CRPF and Karnataka police, the official communication sent to CRPF headquarters on Tuesday, with the details of bail granted to CRPF jawan Sunil Sachin Sawant, stated that the issue was discussed with the DGP Karnataka and other senior state authorities with a request to withdraw the case.

According to official communication, Karnataka Director General of Police has assured top CRPF officers that the "case registered against CRPF CoBRA commando is likely to be withdrawn by the state authorities".

The communication also states that "they assured that the criminal case registered against constable of 207 CoBRA BN is likely to be withdrawn by the state authority."

A CRPF CoBRA commando was thrashed and dragged to police station barefoot by police on April 23 for allegedly violating lockdown norms and assaulting/deterring public servant from discharging his duty in Belgavi district of Karnataka. A case was also registered against him.

This is not the first time when the state is showing efforts to solve the matter amicably.

Karnataka culture and tourism minister CT Ravi had also tweeted on April 27 claiming that he had a word with two ministers including state deputy chief minister who 'confirmed that the issue will be resolved amicably'

"Unfortunate that this incident happened with a CRPF Commando and the police. I have spoken with Industries Minister @JagadishShettar and Transport Minister @LaxmanSavadi. Both have confirmed that the issue will be resolved amicably," CT Ravi had tweeted.

CRPF Additional Director General (ADG) Sanjay Arora had also written to DG showing his displeasure over the ill-treatment done by Karnataka police with CRPF jawan and had said that "Keeping in view the gravity of the incident and its impact on the relationship between the two police forces, I am desired by the Director-General CRPF to request you to kindly get the matter inquired and provide justice. We would be thankful if you could inform us of the outcome."

Arora, in his letter, had also said that Karnataka police should have informed the force before registering a case.

The CRPF CbBRA commando was on extended leave and cleaning his motorcycle in front of his house in Examba city when he was allegedly manhandled and ill-treated in front of his family members and paraded to the police station barefoot, where he was kept in chains and handcuff.

The commando was granted bail by a court on Tuesday in the matter.

Sunil Sachin Sawant has been involved in various anti-Naxals operations and is a part of the CRPF elite CoBRA force, which is famous for doing anti-Naxals operations and has eliminated hundreds of Naxals in the past few years.

Bengaluru, Jan 6: The city police commissioner Bhaskar Rao has ordered a special inquiry by the additional commissioner in connection with sexual harassment on a girl hailing from Kasaragod and the allegation that there were attempts to convert her to another religion.

Udupi-Chikmagalur MP Shobha Karandlaje on Sunday met Rao along with the girl and gave a complaint that two youths from Kasargod had raped her and forced her to convert to their religion.

A complaint has been filed in the Kasargod police station, but no action has been taken against them. Since both the accused work in Electronics City police station jurisdiction, she urged the police to arrest them.

Rao said he was yet to gather information about the case and he had directed the additional commissioner to conduct a preliminary investigation and submit a report.

After filing a complaint, Shobha told reporters that she has been sexually harassed ever since she was a minor. 

The MP said that the girl, who was brought from Kasaragod to Electronics City, where the accused youths run a business, was allegedly raped. “I have asked the Police Commissioner to direct the Electronics City police to register an FIR and arrest the youths,” she said.

“I have spoken to the survivor and she said that the youths were also forcing her to convert to Islam and threatened her with dire consequences if she did not,” the MP alleged.

Shobha went on to claim that there was a gang that could be operating to forcibly convert Hindu women to Islam. She also met Chief Minister B S Yediyurappa along with the girl’s family members and gave a petition.