Commonwealth Games 2018: Bajrang Punia wins Gold in men’s freestyle 65 kg

Sydney, Jan 8:  Authorities in Australia will begin five-day campaign to kill thousands of camels in the country as they drink too much water amid the wildfires.  The government will send helicopters to kill up to 10,000 camels in a five-day campaign starting Wednesday, The Hill reported citing The Australian.

Marita Baker, an Anangu Pitjantjatjara Yankunytjatjara (APY) (large, sparsely-populated local government area for Aboriginal Australians) executive board member, said that the camels were causing problems in her community of Kanypi.

"We have been stuck in stinking hot and uncomfortable conditions, feeling unwell, because the camels are coming in and knocking down fences, getting in around the houses and trying to get to water through air conditioners,'' she said.

The planned killing of the camels comes at a time the country is ravaged by wildfires since November. The disaster has killed more than a dozen people and caused the displacement or deaths of 480 million animals, according to University of Sydney researchers.

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.

Feb 18: There are no half measures for fit-again New Zealand pace spearhead Trent Boult who is ready to challenge India captain Virat Kohli on his return to international cricket during the two-Test series starting in Wellington on Friday. Boult was out of action for the past six weeks due to a fracture on his right hand sustained during the Boxing Day Test against Australia and missed out on the limited-overs leg of the India series. Back for the traditional format, the left-arm fast bowler made his priorities clear ahead of the first Test.

"That's personally why I play the game, to get guys like that (Kohli) out and test myself against them, so I can't wait to get stuck in. But he's an exceptional player. Everyone knows how great he is," Boult said, sending out a warning after landing in the capital city for the opening Test.

New Zealand's last Test series in Australia was a nightmare as they lost 0-3 and India will be a tough test for the Black Caps.

"They are a great side and they are leading the ICC Test Championship. They are very clear on how they wanted to play the game. It was a tough learning curve in Australia. It's good to see where we are in terms of bouncing back," said Boult.

The Basin Reserve track will have a lot for the seamers and in conducive conditions, a wily customer like Boult will prove to be a handful for the travellers.

"I'm preparing for a solid wicket. It generally is very good here and goes the full distance (five days). I do enjoy playing here, the history that's involved, and it's going to be an exciting week building up. I can't wait to get out there," said the 30-year-old who has taken 256 wickets from 65 Tests.

It was frustrating for him to watch his side get walloped 0-5 in the T20 series but exhilarating when it got its mojo back in the subsequent one-dayers.

The Black Caps won 3-0 in the 50-over format. "I think it is what it is. I have just got to put the last six or so weeks behind me and just back myself to get out there and do my thing," said Boult, who warmed up by playing a club game at the picturesque Taupo ground.

Boult did find a bit of humour in his injury which, for him, was more of an accident.

"If I had to break a hand, (it would) probably be my right one. Breaking a hand, you don't really know how much you use it unless you break it," said Boult.

"I was pushing in off the long run. I think a couple of the clubbies from Taupo really enjoyed that. It was a good afternoon," added the pacer, who sent down eight overs in a friendly game for his club Cadets.

While bowling isn't a problem, Boult is hoping that catching doesn't become an issue.

"Everything has gone very well but catching will be the biggest issue for me," he said.

Professionally, Boult had to lie low due to injury, but it was also a good break as he and wife Lana welcomed their second child.

"Having some time away from the game and having my second son a couple of weeks ago came at quite a good time," said Boult.

Fighting fit, all he wants now is to get hold of a red kookaburra and get a few to tail into Kohli and company.

"I am hungry to be here and can't wait to get back in the white and get the red ball moving around," he said.