Shock for Congress in DK, 7 defeated MLAs suspect EVM tampering; BJP in awe

The current physical distancing guidelines provided by the World Health Organisation (WHO) and by the US Centers for Disease Control and Prevention (CDC) may not be adequate to curb the coronavirus spread, according to a research which says the gas cloud from a cough or sneeze may help virus particles travel up to 8 metres. The research, published in the Journal of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.

Study author, MIT associate professor Lydia Bourouiba, warned that droplets of all sizes can travel 23 to 27 feet, or 7-8 metres, carrying the pathogen.

According to Bourouiba, the current guidelines are based on "arbitrary" assumptions of droplet size, "overly simplified", and "may limit the effectiveness of the proposed interventions" against the deadly pandemic.

 She explained that the old guidelines assume droplets to be one of two categories, small or large, taking short-range semi-ballistic trajectories when a person exhales, coughs, or sneezes.

However based on more recent discoveries, the MIT scientist said, sneezes and coughs are made of a puff cloud that carries ambient air, transporting within it clusters of droplets of a wide range of sizes.

Bourouiba warned that this puff cloud, with ambient air entrapped in it, can offer the droplets moisture and warmth that can prevent it from evaporation in the outer environment.

"The locally moist and warm atmosphere within the turbulent gas cloud allows the contained droplets to evade evaporation for much longer than occurs with isolated droplets," she said.

"Under these conditions, the lifetime of a droplet could be considerably extended by a factor of up to 1000, from a fraction of a second to minutes," the researcher explained in the study.

The MIT scientist, who has researched the dynamics of coughs and sneezes for years, added that these droplets settle along the trajectory of a cough or sneeze contaminating surfaces, with their residues staying suspended in the air for hours.

"Even when maximum containment policies were enforced, the rapid international spread of COVID-19 suggests that using arbitrary droplet size cutoffs may not accurately reflect what actually occurs with respiratory emissions, possibly contributing to the ineffectiveness of some procedures used to limit the spread of respiratory disease," Bourouiba wrote in the study

Mangaluru, Jan 21: Operations at Mangaluru International Airport (MIA) are normal, a day after security agencies detonated a bomb recovered from the airport in a controlled explosion, an official said on Tuesday.

"All operations are normal at Mangluru International Airport. Everything is normal," told the airport director V.V. Rao to IANS.

Rao said even on Monday, there was no interruption to the airport operations, except for that one recalled IndiGo flight to Bengaluru.

"As the explosive was isolated and taken away from the airport, there was no disturbance to flights, except one Bengaluru-bound IndiGo flight which suffered a few hours delay and took off later," said Rao.

Meanwhile, security has been tightened at the airport.

Mangluru north assistant commissioner of police Belliappa told media that the police are still on the hunt for the culprits who planted the bomb at the airport.

"We are trying to trace the culprits, we got the footage of the suspects," said Belliappa, highlighting that the police are yet to find the name, age and other details of the suspects.

At Bengaluru's Kempegowda International Airport (KIA), the number of police personnel has been increased in a bid to tighten the security and 24 hour searching of vehicles is underway.

"We have set up two check posts on the way to the airport and randomly checking vehicles," told Devanahalli assistant commissioner of police Subramanya to media.

All Karnataka airports, including Hubballi and Belagavi, are on high alert.

Newsroom, Jan 29: Karnataka’s capital has earned the unwelcome distinction of global capital of traffic congestion. According to a report by TomTom, the Netherlands-based global provider of navigation, traffic and map products, Bengaluru beat 415 other cities across 57 countries to earn the title of world's most traffic congested city in 2019.

“Bengaluru takes the top spot this year with drivers in the southern Indian city expecting to spend an average of 71% extra travel time stuck in traffic," TomTom said in the ninth edition of its annual Traffic Index.

Three other Indian cities, namely, Mumbai, Pune and New Delhi are also ranked in the 2019 edition of TomTom’s Traffic Index of the world’s most traffic-congested cities. 

The report released on Tuesday ranks cities by the average time added to a trip. TomTom index also includes details on when congestion is heaviest and lightest, how highways compare with surface streets, and how much time drivers wasted waiting for other drivers to get out of their way.

Following closely on the heels of Bengaluru is Manila, Philippines, with the similar 71% traffic congestion. Among the top five worst traffic affected cities are Mumbai and Pune from India at the fourth and fifth place respectively, while Bogota, Colombia is on third spot.

Delhi, the national capital of India is on the 8th spot, while Moscow (Russia), Lima (Peru), Istanbul (Turkey) and Jakarta (Indonesia) are on 6th, 7th, 9th and 10th spot respectively.

Mumbai recorded a 65% traffic congestion with 9th September, 2019 being the worst day. On an average, a Mumbaikar lost 209 hours in traffic congestion. Pune has 59% traffic congestion with 2nd August, 2019 being the worst day. 193 hours are lost due to congestion. Delhi, on the other hand, has 56% traffic congestion. 23rd October, 2019 was the worst day, while 190 hours are lost in traffic congestion.

Interestingly, among all the four Indian cities, Delhi has the most number of cars. Previous studies have concluded that Delhi has the best road conditions among the Metro cities of India.

If you are wondering what exactly the percentages mean, a 53% congestion level in Bangkok, for example, means that a trip will take 53% more time than it would during Bangkok’s baseline uncongested conditions.

TomTom calculates the baseline per city by analyzing free-flow travel times of all vehicles on the entire road network – recorded 24/7, 365 days a year. The report by Dutch navigation and mapping company ranks cities by the average time added to a trip. It also includes details on when congestion is heaviest and lightest, and how much time drivers wasted waiting for other drivers to get out of their way.