CPI(M) stages dharna against disconnecting drinking water supply

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of the American Medical Association, noted that the the current guidelines issued by the WHO and CDC are based on outdated models from the 1930s of how gas clouds from a cough, sneeze, or exhalation spread.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 26: Karnataka's Commercial Taxes Department has sealed off an undeclared warehouse with imported goods worth Rs 4 crore in Bengaluru and found 60 GST registrations linked to a Chinese national from Wuhan.

The tax department officials found 25,446 China-made electronic and fast-moving consumer goods worth Rs 4 crore stored in the warehouse which was not declared to the tax authorities.

Commissioner of Commercial Taxes MS Srikar said in a statement that the officers noticed that one person from Wuhan City, China, got the premises in Bengaluru on lease.

They also found that about 60 registrations (both central and state jurisdictions) under the GST Act, in the name of a number of persons for online trading of imported China-made goods, had a single address which was vacant.

Most of the registrations were found irregular in the filing of returns and payment of tax. Majority of the firms either filed nil returns or were non-filers. The registration data showed that one business was registered in 2017-18, 43 in 2018-19, 14 in 2019-20 and two in 2020-21. Most of the 60 firms were private limited companies and 24 persons were interchangeably directors in 58 firms.

At the time of raid, neither the lessee, the Chinese national, nor any of the other 59 registered taxable persons were available at the business premises and no one came forward to participate in the proceedings in spite of providing sufficient time.

It is learnt that the Chinese national is operating the business from Wuhan City since January 2020 with the assistance of some of his agents/employees in Bengaluru.

It has also been learnt that multiple registrations are being taken for a better rating on e-commerce platforms, Srikar said.

The raids were led by Nitesh K Patil, Additional Commissioner, Enforcement, South Zone.
The Commercial Taxes Department is closely watching the genuineness of newly registered persons and conducting post-registration verification visits.

Any registration taken with mala fide intention of evading taxes will be dealt with seriously, the Commissioner said.