There is an 'atmosphere' for BJP to form govt in Karnataka: BSY

Bengaluru, Jun 27: Karnataka Chief Minister B S Yediyurappa on Saturday emphasised on giving a new dimension to the city by strengthening the infrastructure and improving various other sectors including health and housing.

He was speaking at the groundbreaking ceremony of the 108-feet-tall bronze statue of Kempe Gowda, the founder of Bengaluru, at the Kempegowda International Airport near here. The statue would be built at a cost of Rs 66 crore in one-and-half years.

Yediyurappa said Bengaluru has earned the fame of Garden City and Silicon Valley of India. Noting that the state capital was one of the fastest-growing cities in the world and internationally acclaimed hub of information technology and biotechnology, he said, "We need to give a new dimension to this city and strengthen the infrastructure. We have to focus on health, housing, pollution control, traffic management. Our government has taken various measures to develop the city," the chief minister said.

On Kempe Gowda, Yediyurappa said though the city did not have a perennial river, he built hundreds of lakes and interconnected them. His water management reflects on his foresightedness, he added.

"Kempambudhi, Dharmambudhi, Sampaniram and Halasuru lake are among the major lakes gifted to the people of Bengaluru. He had set up the markets called Chickpet, Akkipet, Balepet, Kumbarpet, are still the major trade hubs," Yediyurappa said.

Former Prime Minister H D Deve Gowda, Union Minister of State for Railways Suresh Angadi, deputy chief ministers Govind Karjol, Dr C N Ashwath Narayan, Laxman Savadi and many other ministers were present on the occasion. The event was organised on the 511th birth anniversary of Kempe Gowda. Kempe Gowda was a chieftain of Vijayanagara dynasty who founded Bengaluru around 550 years ago.

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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