Video of BJP minister peeing on roadside goes viral

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, May 31: A low pressure area formed over Arabian sea and Lakshadweep is likely to intensify further into a cyclonic storm and reach coastal states of Maharashtra and Gujarat next week, the Indian Meteorological Department (IMD) said on Sunday.

Sunitha Devi, in charge of cyclones at IMD, said, "A low pressure area has formed over southeast and adjoining east central Arabian sea and Lakshadweep area. It is very likely to concentrate into a depression during the next 24 hours and intensify further into a cyclonic storm during subsequent 24 hours."

She added, "It is likely to move nearly northwards and reach near north Maharashtra and Gujarat coasts by 3rd June."

A low pressure area and a depression are the first two levels on the IMD's eight-category scale used to classify cyclones based on their intensity.

The weather bureau said that the sea condition will be very rough and advised fishermen not to venture into the sea till June 4.

It has forecast heavy to very heavy rainfall over south coastal Maharashtra for June 2-4, on north coast on June 2-3 and in Gujarat, Daman and Diu and Dadar and Nagar Haveli on June 3-5.

IMD said that under the influence of likely formation of a low pressure system over Arabian Sea, conditions will become favourable from June 1 for onset of monsoon over Kerala.

The arrival date for monsoon in Kerala is around June 1 every year and in Maharashtra around June 10.

On Saturday, a private forecasting agency claimed that monsoon has already hit Kerala, but the assertions were quickly rebutted by the Ministry of Earth Sciences.

"The news about monsoon onset over Kerala in Social Media is not correct. Monsoon has not arrived over Kerala. The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge a"Stephen Hawking," saidAMadhavan Rajeevan, Secretary, Ministry of Earth Sciences.

Kuldeep Srivastava, the head of IMD's Regional Weather Forecasting Centre said that the formation of a low pressure system in Arabian sea and its movement towards Gujarat coast will bring moisture to Delhi-NCR and North West India from June 3.

Two storms are forming over the Arabian Sea, one lies off the African coast and is likely to move over Oman and Yemen, while the other is placed close to India.

The development comes almost ten days after 'Amphan' pummeled four districts of Bengal in the fiercest cyclone in the region in a century, that left 86 people dead and rendered ten million people homeless.

New Delhi, July 20: India's retail trade has suffered a business loss of about Rs 15.5 lakh crore in past 100 days due to the COVID-19 lockdown, traders' body CAIT said on Sunday. 

In a statement, the Confederation of All India Traders (CAIT) said traders across the country are depressed because of minimal of the consumers, considerable absence of employees, facing financial crunch and yet have to meet several financial obligations.

"No support policy from the central or state governments is yet another crucial factor which is haunting the traders," CAIT claimed. 

CAIT Secretary General Praveen Khandelwal said the domestic trade is passing through its worst period in the current century which reflects that if immediate steps are not taken about 20 per cent of the shops in India will have to close down their shutters.

The traders’ body has also urged the government to award a substantial package to traders to ensure their survival. Their demands include: Relaxation in payment of taxes, extension in repayment of bank loans and EMIs without any further interest or penalty as well as measures that would provide money directly in the hands of the traders.

In April, the losses stood at about Rs. 5 lakh crore whereas in May it was estimated to be about Rs. 4.5 lakh crore, followed by Rs. 4 lakh crore in June. Losses stood at about 2.5 lakh crore in the first fortnight of July offering a grim snapshot of the effect of the pandemic on consumer spending. 

“Even as the lockdown was relaxed, store footfall was only 10 per cent. Most of these traders do not have deep pockets to sustain this severe economic catastrophe and on the other hand have several financial obligations to meet. At this crucial time, handholding of these traders is all the more much required,” Khandelwal said.