Kerala govt sponsored the entry of 2 women into Sabarimala: Yeddyurappa

Kochi, Jan 11: Two of the four illegal apartment complexes were brought down by controlled implosion here on Saturday.

However, the other two apartments-- Golden Kayaloram and Jain Coral-- will be demolished on Sunday.

The demolition of the first building Holy Faith H2O, slated to be carried out at 11 am, was delayed by 18 minutes while the twin towers of Alfa Serene, which is surrounded by 36 houses, were brought down at 11.43 am.

As per authorities, as many as 343 kgs of explosives were used for the demolition of twin towers of Alfa Serene, which had 80 apartments and 16 floors each.

Section 144 has been imposed within a 200-metre radius of the complexes on Saturday and Sunday. Moreover, traffic has been halted on land, water and air in the evacuation zone during the process.

There are concerns that some concrete pieces of the second tower of the building may have fallen into the lake nearby. It is yet to be estimated if the debris or concrete pieces have affected the buildings nearby.

The four apartment complexes in Maradu were ordered to be demolished by the Supreme Court for violating the Coastal Regulation Zone (CRZ) norms.

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.

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.