Difficult to control grown-up children; my son should be punished: Rai

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 9: A forest guard was arrested caught red-hand by Anti-Corruption Bureau (ACB) officials while accepting Rs 3,000 bribe from a person for granting permission to cut Mahogany trees for his personal use, a statement said on Thursday.

According to the statement, the arrested identified as N Sudheer sought bribe of Rs 15,000 from Gopalakrishna Herale, a resident of Beltangady.

Mr Herale, in a complaint, lodged on January 7 said that he had sought a permit from the forest department for cutting of Mahogany trees purchased by him.

Bengaluru, June 23: A senior IAS officer allegedly, who had faced arrest in connection with I Monetary Advice (IMA) scam, today allegedly committed suicide by hanging himself at his residence in the city. 

The deceased is BM Vijay Shankar. He had been arrested by special investigation team (SIT) in the I Monetary Advice (IMA) case when he was deputy commissioner (DC) Urban Bengaluru. 

He had spent few days in the jail over his alleged involvement in the IMA scam and was released on bail. The IMA case is currently being probed by Central Bureau of Investigation.

Shankar was staying in Jayanagar near Ashoka Pillar along with his family members.

Shankar was accused of taking Rs 1.5 crore to approve a report on financial irregularities, and was accused of giving a clean chit to the main accused of IMA scam, Mohammed Mansoor Khan.

The incident came to light around 8 pm. It is alleged that Shankar ended his life around 7.00 pm, when he was alone in the house. Shankar was said to be under severe depression after his name surfaced in the scam, and his subsequent arrest.

However, the exact reason for his extreme step is yet to be identified. Tilak Nagar police have taken up the case of mysterious death under CrPc and are probing further. As of now the police officials have not found any death note. A senior officer said: "once we finish the procedures of investigating the spot his body will be shifted to Victoria hospital for post mortem. The report will find out exact cause of his death".

Police commissioner Bhaskar Rao said: "We have taken up the case of unnatural death with regard to Vijay Shankar's death. Further probe will reveal more details about it".