Mangaluru journalist Dr Sadananda Perla conferred with Arasu award

Bengaluru, Feb 28: BS Yediyurappa’s contribution to the economy is substantial, and he is one CM who has contributed largely to making India the fifth largest economy, said Defence Minister Rajnath Singh on Thursday.

“He will ensure that Karnataka contributes towards making India the third-largest economy in the coming days,” Singh said, who had flown from New Delhi to participate in the CM’s birthday celebrations.

Singh recalled Yediyurappa asking him how to increase welfare measures for farmers, and had suggested that the CM reduce interest rates on loans to help the community. “Yediyurappa took the suggestion seriously and reduced interest of loans to a mere 4 % and gradually reduced it to 1 % before coming down to zero,” Singh said, appreciating Yediyurappa’s love for farmers.

Bengaluru, July 13: The results of the recently concluded II PUC examinations in Karnataka will be announced tomorrow, Tuesday, July 14, at 11:30 am.

The results, according to Primary and Secondary Education minister S Suresh Kumar, will be sent in the form of SMS-es to the registered mobile numbers of the students by 11:30 am.

Over 6.5 lakh students had appeared for the II PUC exams. 

Even though examinations for most of the subjects was completed in March, students had to wait close to three months, due to nationwide lockdown, to appear for the last exam -- for English -- which was held on 18th June.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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