Modi tries to woo Dalits in Karnataka, says he is trying to fulfil Ambedkar’s dream

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Apr 1: Karnataka government along with BBMP has asked project contractors, builders and developers in the city not to send their labourers to their native place and instead provide them with amenities like food and shelter in this lockdown period.

It was also warned with legal action would be taken against them if they violating the instructions from the government .

Bengaluru, Feb 21: The Supreme Court in its interim order on Thursday allowed the plea of the Karnataka government for implementation of the final award by a tribunal for sharing of water between Goa, Karnataka and Maharashtra from the Mahadayi river.

The interim order was passed by a bench comprising Justice D Y Chandrachud and Justice Hemant Gupta after hearing the counsel from the three states. The bench said the final hearing in the matter will take place in July.

It also said the interim order is subject to the final outcome of the petitions filed by the three states against the tribunal's award.

The Mahadayi Water Dispute tribunal had passed the order on August 14, 2018, allocating 13.42 TMC ( Thousand Million Cubic Feet.) water (including 3.9 TMC for diversion into the depleted Malaprabha river basin) from the Mahadayi river basin to Karnataka.

Maharashtra was allotted 1.33 TMC water while Goa was given 24 TMC in the final decision of the tribunal. The UPA-2 government had constituted Mahadayi Water Disputes Tribunal in 2010.

Karnataka government, which has locked horns with the neighbouring Goa on the larger issue of sharing Mahadayi River water between both the states, had petitioned the tribunal seeking the release of 7.56 tmcft of water for the Kalasa-Banduri Nala project.

The Kalasa-Banduri Nala (diversion) project, which will utilise 7.56 tmcft of water from the inter-state Mahadayi river, is being undertaken by Karnataka to improve drinking water supply to the twin cities of Hubballi-Dharwad and the districts of Belagavi and Gadag.

It involves building barrages across Kalasa and Banduri, the tributaries of the Mahadayi River, to divert 7.56 tmc water to the Malaprabha river which fulfils the drinking water needs of the twin cities.