SC dismisses PIL for high level probe into Pulwama terror attack

London, May 20: The current physical distancing guidelines of 6 feet may be insufficient to prevent COVID-19 transmission, according to a study which says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Researchers, including those from the University of Nicosia in Cyprus, said a good baseline for studying the airborne transmission of viruses, like the one behind the COVID-19 pandemic, is a deeper understanding of how particles travel through the air when people cough.

In the study, published in the journal Physics of Fluids, they said even with a slight breeze of about four kilometres per hour (kph), saliva travels 18 feet in 5 seconds.

"The droplet cloud will affect both adults and children of different heights," said study co-author Dimitris Drikakis from the University of Nicosia.

According to the scientists, shorter adults and children could be at higher risk if they are located within the trajectory of the saliva droplets.

They said saliva is a complex fluid, which travels suspended in a bulk of surrounding air released by a cough, adding that many factors affect how saliva droplets travel in the air.

These factors, the study noted, include the size and number of droplets, how they interact with one another and the surrounding air as they disperse and evaporate, how heat and mass are transferred, and the humidity and temperature of the surrounding air.

In the study, the scientists created a computer simulation to examine the state of every saliva droplet moving through the air in front of a coughing person.

The model considered the effects of humidity, dispersion force, interactions of molecules of saliva and air, and how the droplets change from liquid to vapour and evaporate, along with a grid representing the space in front of a coughing person.

Each grid, the scientists said, holds information about variables like pressure, fluid velocity, temperature, droplet mass, and droplet position.

The study analysed the fates of nearly 1,008 simulated saliva droplets, and solved as many as 3.7 million equations.

"The purpose of the mathematical modelling and simulation is to take into account all the real coupling or interaction mechanisms that may take place between the main bulk fluid flow and the saliva droplets, and between the saliva droplets themselves," explained Talib Dbouk, another co-author of the study.

However, the researchers added that further studies are needed to determine the effect of ground surface temperature on the behaviour of saliva in air.

They also believe that indoor environments, especially ones with air conditioning, may significantly affect the particle movement through air.

This work is important since it concerns safety distance guidelines, and advances the understanding of the transmission of airborne diseases, Drikakis said.

New Delhi, Feb 10: Former finance minister P Chidambaram on Monday tore into the Modi government's handling of the economy, saying it was close to collapse and was been attended by "very incompetent doctors."

Initiating the debate on the Union Budget for 2020-21, he said rising unemployment and falling consumption was making India poorer.

The economy, he said, is facing demand constraints and is investment starved. The economy is facing fall in consumption and rising unemployment.

"Fear and uncertainty prevails in the country," he added.

He said the chief economic advisor to the BJP government for four years, Arvind Subramanian has stated that the economy is in the ICU. But "I would say the patient has been kept out of ICU and incompetent doctors are looking at the patient," Chidambaram said.

"It is dangerous to have a patient out of ICU and being looked upon by incompetent doctors. What is the point standing around and chanting slogan 'Sab ka saath, sab ka vishwas'," he said, adding every competent doctor the Modi government could ever identify has left the country.

His said a list of such people included former RBI governor Raghurman Rajan, former CEA Arvind Subramanian, former RBI governor Urjit Patel and former NITI Aayog vice chairman Arvind Panagariya.

"Who are your doctors, I want to know," he said, adding the government considers Congress as untouchable and doesn't think of any good about the rest of the opposition and so doesn't consult them.

Chidambaram charged that instead of putting money in the hands of people, the Modi government "put money in hands of 200 corporates" by way of corporate tax.

He said Finance Minister Nirmala Sitharaman in her 160- minute budget speech did not talk of the economy and its management.

"You are living in echo chambers. You want to hear your own voice," he said.

Listing problems with the Modi government, Chidambaram said it refuses to admits in mistakes, lives in denial and has predispositions.

The demonetisation of old 1000 and 500 rupee notes, as well as the hurried implementation of the Goods and Services Tax (GST), are "monumental blunders" that ruined the economy, he said, adding the Modi regime is predisposed to protectionism, a 'strong' rupee and is against bilateral and multilateral agreements.

"It is living in denial," he said, adding the economic growth has fallen for hereto unseen six consecutive quarters.

He wondered on the narrative Finance Minister Nirmala Sitharaman was trying to give after reading out a 160-minute budget speech with few pages left unread.

Her budget neither made any reference to the Economic Survey nor picked up a single idea from it, he said.

Chidambaram, who is credited with presenting a 'dream budget' more than two decades back, said the GDP growth has declined for six consecutive quarters, agriculture is growing by just 2 per cent, while consumer price inflation has risen from 1.9 per cent in January 2019 to 7.4 per cent in a matter of 11 months.

Also, food inflation is at 12.2 per cent. Bank credit is growing 8 per cent with non-food credit rising by 7-8 per cent and credit to industry by just 2.7 per cent. Credit to agriculture has declined from 18.3 per cent to 5.3 per cent and that for MSMEs from 6.7 per cent to 1.6 per cent.

Overall industrial index showed just 0.6 per cent growth. "Every major industry is either near zero or in negative zone," he said, adding thermal power plants are operating at just 55 per cent of the capacity as factories have either closed or are on the verge of closure.

"That gives you a good picture of the state of economy. You don't require MRI," he said. "You are in management for six years. How long can you blame previous managers."

He charged the government with burying unfavourable reports such as the labour survey that put unemployment at 45 -year high of 6.1 per cent at end of 2017-18. Also, consumer expenditure has falling to 3.7 per cent between 2011-12 and 2017-18.

Drilling holes in Budget numbers, he said the 2019-20 budget projected a nominal GDP growth of 12 per cent but ended with just 8.5 per cent. Fiscal deficit was targeted to be shrunk to 3.3 per cent of the GDP but ended by at 3.8 per cent and in the next fiscal it is being targeted at 3.5 per cent.

Revenue deficit was targeted at 2.3 per cent in fiscal ending March 31, 2020 but ended up at 2.4 per cent and in the next it will rise to 2.8 per cent, he said, adding capital expenditure in the next fiscal will shrink to 0.7 per cent from 1.4 per cent in the current.

Net tax revenue in the current fiscal was targeted at Rs 16.49 lakh crore but only Rs 9 lakh crore was collected in first nine months till December 2019 and "you want us to believe this will rise to Rs 15 lakh crore by March 2020," he said.

Similarly, expenditure in 2019-20 was pegged at Rs 27.86 lakh crore but only Rs 11.78 lakh crore spent during April- December and by March this is projected to rise to Rs 27 lakh crore.

"You have no money to spend... and these are masked by numbers," he said. "Numbers are not easily acceptable or believable."

Chidambaram said the government is facing shortfall in all forms of taxes - Rs 1.56 lakh crore on corporate tax, Rs 10,000 crore on personal income tax, Rs 30,000 crore on customs, Rs 52,000 crore on excise and Rs 51,000 crore on GST.

This despite "the extraordinary powers" and "all kinds of power" given to lower level tax officials, he said.

He read of list of heads under which allocation has fallen - food subsidy, agriculture, PM-Kisan, rural roads, mid-day meal scheme, ICDS, skill development, Ayushman Bharat, rural development and MGNEGA.

Aurangabad, May 8: At least 15 migrant workers, who were sleeping on the railway tracks while going back to their native places, were run over by a goods train between Maharashtra's Jalna and Aurangabad, officials said on Friday.

A senior railway official confirmed that 15 migrant labourers were run over by a goods train between Jalna and Aurangabad of Nanded Divison of South Central Railway.

The official said that the incident happened around 5.30 am on Friday when the migrant workers, who were on way back to their homes and sleeping on the railway tracks.

However, it is yet not clear from where this group hailed and where they were going.

Amid the nationwide lockdown, thousands of migrant workers stranded in several other cities have started their journey to return to their native places on foot.

The interstate bus service, passenger, mail and express train services have been suspended since March 24.

The railways has started running Shramik Special trains to transport the stranded migrants to their native places since May 1.

Till Thursday railways has run 201 Shramik Special trains.