Muslim outfits supporting Pakistan; police harassing Hindutva workers: Eshwarappa

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 14: Bracing for post-lockdown hard times, the Karnataka government on Monday decided to auction about 12,000 BDA sites and regularise unauthorised constructions across the state in a bid to shore up its already-thin finances.

"Some 12,000 corner sites (developed by Bangalore Development Authority, or BDA) are lying idle in Bengaluru. We hope to net about Rs 15,000 crore from the auction of the sites," chief minister BS Yediyurappa said after chairing a meeting with senior ministers and officials to discuss ways to raise funds.

"The Covid-19 pandemic has thrown Karnataka into a deep financial crisis. There's a need for such measures," the chief minister said in defence of the decisions.

The sites – mainly of 40x60ft and 50x80ft dimensions – are in nine layouts. Also, the state government will auction corner and vacant sites in layouts formed by development authorities in other major cities of Karnataka.

Industry experts said that in a tepid market, it wasn’t easy to find buyers for the sites, each of which costs about Rs 1 crore. The CM said, “Since it’s an open auction, I’m confident of a good price since corner sites are always in demand. If we don’t get the expected price, then we will stop the process.”

The meeting decided to fast-track disposal of the cases related to regularisation of unauthorised constructions pending before courts. “If courts decide these cases, then thousands of people will be relieved, besides helping the government in mobilising resources to take up development works,” the CM said.

The government hopes to get about Rs 4,000 crore from the layout-regularisation move.
The government decided to amend the law to allow hundreds of private and cooperative housing societies to allot residential plots.

Mangaluru, Feb 15: Dense fog formation and poor visibility at the runway forced to delay and diversions of some flights arriving and take off at the Mangaluru International Airport (MIA) on Saturday.

Flights take off and landings were suspended from 0700 hours am to 1030 hours.

Many flights to land in the morning were diverted.