Time to make India Muslim-free: Sadhvi Prachi

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jan 10: Barely 24 hours after the standoff between BJP workers and students of Jyoti Nivas College (JNC) in Bengaluru over CAA became breaking news, it took political hues with the saffron party and the Congress locking horns over the issue.

Taking the battle to the anti-CAA camp on Thursday, the BJP aggressively defended its party workers, who on Wednesday erected a pro-CAA banner on the college compound wall and allegedly forced students to sign on it as a mark of support.

With one of the workers who had locked horns with JNC students by his side, deputy chief minister CN Ashwath Narayan, at his official residence, questioned students’ right to protest party cadre erecting a pro-CAA banner on their college compound wall.

“How can you tell people not to create awareness about a law that has been passed in this country? Who gave students the right to question political workers? If there was anything wrong, let them report to the police,” retorted the minister, who also holds the higher education department portfolio.

On the other hand, the Congress, cashing in on simmering anger over the assault on JNU students in Delhi, used the JNC standoff to project the ruling party as prime culprits in stifling the voice of students. BTM Layout MLA and seasoned politician R Ramalinga Reddy even warned the BJP against “allowing JNC to become another JNU”.

Reddy met with the JNC administration and extended his support against any “threats” to students. It is being alleged that Reddy was the first to “leak” the video of Wednesday’s row to the media. The college falls in his assembly constituency.

Taking a cue from his colleague’s stand, former CM and opposition leader Siddaramaiah also leaned into the matter and sent a strong message “backing” students in the standoff. “BJP goons are threatening students of Jyotinivas College to support CAA. MrYediyurappa, I am strictly warning you to control hooligans from your party. Don't subvert knowledge & institutions for your selfish motives. We won't let Ktaka to be victim of your Hitler rule!” said Siddaramaiah in a tweet.

Bengaluru, Jul 2: The India Meteorological Department (IMD), Bengaluru Director CS Patil said that good rainfall is expected in few districts during next five days.

The districts likely to receive rainfall include Dakshina Kannada, Shivamogga, Chikkamagaluru, Hassan and Kodagu. All these districts had received deficit rainfall till date from June 1.

"From June 1 to till date Dakshina Kannada, Shivamogga, Chikkamagaluru, Hassan and Kodagu districts received deficit rainfall. However, there is an expectation of good rainfall in these districts in next 5 days," said CS Patil.

"Coastal districts are very likely to experience light to moderate to widespread rainfall activity during the next five days," he added.