United for a better Mangaluru: A unique conclave on Sept 9

Udupi, Jun 27: The Indian Meteorological Department and the Karnataka State Natural Disaster Monitoring Centre have sounded Orange alert in coastal Karnataka as there is all possibility of heavy rain lashing the region for the next three days from Saturday.

According to the forecast, the district may get 100 mm to 115 mm rainfall. The District Disaster Management Authority (DDMA) has given instructions on taking precautions in the district.

All officers of district and taluk-levels have been told to compulsorily remain in the central position. The citizens should take care not to venture into rivers or the sea. They should also stay away from electricity poles, buildings, and trees, which might prove dangerous, and take shelter in safer places.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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, Jun 8: The Bharatiya Janata Party (BJP) on Monday fielded Eranna Kadadi and Ashok Gasti as it's candidates for the June 19 Rajya Sabha elections from Karnataka, ignoring the recommendations of the state BJP unit.

The state unit had recommended the names of Prabhakar Kore, Ramesh Katti and Prakash Shetty.

The names of the two candidates were announced in a party statement in Delhi.

The election is scheduled on June 19 to fill four Rajya Sabha seats from Karnataka, represented by Rajeev Gowda and BK Hariprasad of Congress, Prabhakar Kore of BJP and D Kupendra Reddy of JD(S) that will fall vacant on June 25, with their retirement.

June 9 is the last date for filing nominations. Party sources said both Kadadi and Gasti come from an RSS background.

Kadadi hails from Belagavi, while Gasti is a resident of Raichur.

The 54-year-old Eranna Kadadi started his active political career in 1989 and unsuccessfully contested the assembly election from Arambhavi constituency in 1994 on a BJP ticket.

He had also served as the Belagavi district Panchayat president in 2010.

Ashok Gasti is a lawyer by profession and former general secretary of the BJP's OBC Cell.

He is the former chairperson of the Backward Class Development Corporation.