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Mumbai, Jun 7: The Mumbai airport became home for a 23-year-old Ghanaian footballer for 74 days after he got stranded there due to the coronavirus-induced lockdown that led to cancellation of flights.

The ordeal of Randy Juan Muller reminded people of Tom Hank's character in the Hollywood film "The Terminal", and it ended after Yuva Sena, the youth wing of the Shiv Sena, reached out to help him.

Muller has now shifted to a local hotel and is waiting for airlines to resume operations so that he can fly home.

The Mumbai International Airport Ltd (MIAL) also provided him all help, including food, and allowed him to use the airport WiFi network to make calls, an official said.

Muller, a Ghana national who used to play for a club in Kerala, was scheduled to fly home by Kenya Airways flight when the lockdown was announced and he found himself stranded at the Mumbai airport.

"He would spend his time at the airport's fancy artificial gardens and somehow buy food from stalls and pass his time with the airport staff. Muller told me the airport staff was very helpful," Yuva Sena office-bearer Rahul Kanal said.

A security officer at the airport gave him mobile phone to call his family back home.

A Twitter user brought Muller's plight to the notice of Maharashtra Tourism Minister Aaditya Thackeray following which Kanal reached out to the footballer and helped him move into a hotel.

On Saturday, Muller thanked Thackeray and Kanal for their help.

"Thank you Aaditya Thackeray, Rahul Kanal. Thank you very very so much. I appreciate what you have done. Salute," he said.

Kanal in a tweet said when he met Muller at the airport, the latter cried with happiness.

"Have no words to salute his willpower and fight for survival in such circumstances at this age," Kanal said.

An official at the Mumbai International Airport Ltd said the footballer was provided all help.

"All personnel at the airport, including from MIAL and CISF, gave him every possible help during his stay at the airport. Besides food, he was also allowed to use the airport WiFi network to make calls. Airport staff would recharge his phone at their own expense," the official said.

The 2004 film "Terminal" of Steven Spielberg was about a man stranded at a US airport after being denied entry into the country and a military coup back home.

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.

Mangaluru, May 6: Three more coronavirus positive cases have been reported in Dakshina Kannada district. 

According to fresh bulletin of health and family welfare department, an 11-year-old girl and a 36-year-old woman from Boloor in Mangaluru and a 16-year-old girl from Bantwal tested positive for the covid-19. 

All of them are undergoing treatment at Wenlock Hospital. Their condition is said to be stable. 

With this the total number of cases in the district reached 28 including 22 residents of Dakshina Kannada, 4 from Kasaragod, 1 from Udupi and 1 from Uttara Kannada.