Massive tax evasion: Amitabh, Aishwarya among 500 Indians with hidden assets

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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

Bengaluru, Jul 11: Karantaka Congress chief DK Shivakumar on Friday raised questions over claims that Rewa Ultra Mega Solar Power Project Madhya Pradesh was "largest in Asia" and said a 2000 MW had been built in the state.

"BJP central government is claiming today that it inaugurated Asia's largest solar plant of 750 MW at Rewa, MP. What then is the 2000 MW Solar Plant in Pavagada, Karnataka which was built in just 3 years by Karnataka Congress government and has been operational since 2018?" Shivakumar said in a tweet.

The Congress leader further said that the most unique thing about the solar project set up in Karnataka was that the farmers were being paid yearly rents for the land upon which it was constructed as it had been leased and not purchased from them, helping them retain ownership.

"The unique thing about the 2000 MW Pavagada Mega Solar Park was that not a single acre of land was acquired from the farmers. All 13,000 acres have been leased from the farmers who are being given yearly rent. Karnataka model of renewable energy was accepted as the best in India," he said.

"Union power minister must answer as to how the Central Government can claim that the Rewa Solar Park (750 MW) opened today is Asia's largest when clearly the Pavagada Park in Karnataka is much larger (2000 MW) and was opened two years back!" he said.

Prime Minister Narendra Modi dedicated Rewa Ultra Mega Solar Power Project to the nation on Friday. 

Mysuru, Feb 7: Former chief minister and Janata Dal (Secular) leader HD Kumaraswamy on Thursday said that Chief Minister BS Yediyurappa-led government is not stable and it can fall at any moment.

"Karnataka Government is not a stable one. With the developments taking place, it can fall at any moment," Kumaraswamy told reporters when asked to comment on the Karnataka Cabinet expansion.

Earlier in the day, 10 MLAs including Ramesh Jarkiholi, Anand Singh, K Sudhakar and BA Basavaraja took oath as Cabinet Ministers at Raj Bhawan in Bengaluru.