Swacch Mangaluru Abhiyan completes 35 weeks; Marnamikatta gets a new look

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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/Kodagu, Feb 24: Three days after the sloganeering by 19-year-old college student Amulya Leona Norohna at an anti-CAA rally and her subsequent arrest on charges of sedition kicked up a storm, Karnataka minister BC Patil on Sunday advocated central legislation that enables authorities “to shoot at sight” those chanting pro-Pakistan slogans.

Responding to reporters’ queries on the ongoing fracas over the chants, Patil said he would appeal to Prime Minister Narendra Modi to bring in a law so that anti-national elements are “killed on the spot”.

“The Centre must promulgate a law that enables authorities to shoot those who do anything that is seen as anti-national and chant pro-Pakistan slogans,” Patil said. “These elements must be killed on the spot. I am appealing to the PM, through the media now, to bring in such a law. I will also write to the PM.”

In Kodagu, Union minister for chemicals and fertilizer, DV Sadananda Gowda, echoed state home minister home minister Basavaraj Bommai’s line that stringent action will be taken against those indulging in anti-national activity, saying there will be “no mercy” for those taking a pro-Pakistan stance.

“The Union government will assist in the police investigation in Amulya,” he said. Gowda went on to claim that many anti-national organizations have been using CAA protests for political gain.

“We will curb such incidents forever. We will not allow such incidents to happen in future. Organisers of such rallies should be thoroughly questioned,” Gowda said.

Bommai on Saturday had also claimed the government will initiate action against educational institutions and hostels it they fail to act against students indulging in such activity.

“The government will discuss ways to prevent such incidents in colleges and hostels. We will instruct heads of educational institutions and hostel wardens to initiate action against such students. If they fail, the government will take action against them,” Bommai said, without defining what constitutes anti-national activity.

However, despite Congress saying there is no room for anti-national activity and stringent action must be taken against those indulging in such activity, former minister and senior functionary DK Shivakumar suggested he found nothing in Amulya’s background to suggest she is anti-national.

“Let me make it absolutely clear that the Congress party will not support any person or persons who hail another country and bring shame to India,” Shivakumar said. “However, I have seen the girl’s [Amulya’s] previous posts on social media and read her statements on various forums. She has been making statements on an ideological ground. Let us not jump the gun, but investigate exactly what she meant to say.”

Bengaluru, Jan 10: The Special Investigation Team (SIT), probing the murder case of journalist-activist Gauri, arrested absconding suspect Rushikesh Devdikar alias Murali (44) from Dhanbad district in Jharkhand on Thursday evening and is bringing him to the city.

Rushikesh is the 18th suspect arrested in the case, Chief Investigating Officer M N Anucheth said. The investigation has revealed that he was primarily involved in the conspiracy to murder Gauri.

Rushikesh, who was hiding in a house in Katras, Dhanbad, will be produced before the local Judicial Magistrate in Dhanbad on Friday, said Anucheth, adding that the SIT had searched his house for clues. "We will obtain a transit warrant from the court and then bring him to Bengaluru," the officer said.

Originally from Aurangabad in Maharashtra, Rushikesh's family still lives there.

Gauri Lankesh was shot dead near her residence at around 8.20 pm on September 5, 2017, by two bike-borne men.