India is very important inspiration: UN cheif Guterres

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, Jul 15: Air India has started the process of identifying employees, based on various factors like efficiency, health and redundancy, who will be sent on compulsory leave without pay (LWP) for up to five years, according to an official order.

The airline's board of directors have authorised its Chairman and Managing Director Rajiv Bansal to send employees on LWP "for six months or for a period of two years extendable upto five years, depending upon the following factors - suitability, efficiency, competence, quality of performance, health of the employee, instance of non-availability of the employee for duty in the past as a result of ill health or otherwise and redundancy", the order said on Tuesday.

The departmental heads in the headquarter as well as regional directors are required to assess each employee "on the above mentioned factors and identify the cases where option of compulsory LWP can be exercised", stated the order dated July 14.

"Names of such employees need to be forwarded to the General Manager (Personnel) in headquarter for obtaining necessary approval of CMD," the order added.

In response to queries regarding this matter, Air India spokesperson said,"We would not like to make any comment on the issue."

Aviation sector has been significantly impacted due to the travel restrictions imposed in India and other countries due to the coronavirus pandemic. All airlines in India have taken cost-cutting measures such as pay cuts, LWP and firings of employees in order to conserve cash flow.

For example, GoAir has put most of its employees on compulsory LWP since April.

India resumed domestic passenger flights from May 25 after a gap of two months due to the coronavirus pandemic.

However, the airlines have been allowed to operate only a maximum of 45 per cent of their pre-COVID domestic flights. Occupancy rate in Indian domestic flights has been around 50-60 per cent since May 25.

Scheduled international passenger flights continue to remain suspended in India since March 23.

The passenger demand for air travel will contract by 49 per cent in 2020 for Indian carriers in comparison to 2019 due to COVID-19 crisis, said global airlines body IATA on Monday.

Kolkata, Jan 12: Strongly defending the new citizenship law, Prime Minister Narendra Modi said on Sunday the dispute that has arisen over it has made the world aware of persecution of religious minorities in Pakistan.

He, however, deplored that a section of the youth is being “misguided” over the Citizenship (Amendment) Act, which is aimed at giving and not taking away anybody's citizenship rights.

“CAA is not about taking away citizenship, it is about giving citizenship. Today, on National Youth Day, I would like to tell this to the youngsters of India, West Bengal, North East that this is not an overnight law for giving citizenship.

“We must all know that any person of any religion from any country of the world who believes in India and its Constitution can apply for Indian citizenship through due process. There's no problem in that,” he told a gathering at Belur Math, the headquarters of Ramkrishna Mission.

Modi said even Mahatma Gandhi had favoured Indian citizenship to those fleeing religious persecution and that his government has only delivered on the wishes of the freedom fighters.

Referring to anti-CAA protests in the North-East, Modi vowed to protect the distinct identity and culture of the people of the region, and asserted the new law will not hurt their interests.

“We've only done what Mahatma Gandhi had said decades ago. Should we send these refugees back to die? Are they our responsibility or not? Should we make them our citizens or not?” he said, evoking a thunderous applause by the gathering.

Modi said some people with political interests are deliberately spreading rumours about the new citizenship law, despite “complete clarity” over the CAA.

“Our initiative to amend the citizenship act has created a dispute. It is the result of our initiative that Pakistan will now have to answer why they have been persecuting minorities for the last 70 years. Human rights have been demolished in Pakistan,” he said.

Seeking to assuage the concerns of the people of the North-East, Modi called the region “our pride”. “Their culture, traditions and demography remains untouched by this amended law,” he said.

He said the citizenship law was only “changed a little” for those who were ill-treated in Pakisan after Partition.

“They were having a bitter time living there. Women were in danger of losing their pride,” he said.

“Young people have understood the whole thing but those who want to indulge in politics over it will not,” he said.

Modi said five years ago, there was disappointment among the youth of the country, but the situation has changed now.

“Not just India, the entire world has a lot of expectations from the youth of the country. The youth are not afraid of challenges....they challenge the challenges,” he said at the Belur Math, the abode of Swami Vivekananda for several years until his death in 1902, aged 39 years.

Modi, an ardent devotee of Vivekananda, spent the night at the Math.

He has a long association with the Ramkrishna Mission order founded by Vivekananda in 1897. Inspired by the teachings of Vivekananda, Modi had arrived at the Mission Ashram in Gujarat's Rajkot and expressed desire to join the order.

Swami Atmasthananda, who later went on to become the 15th president of the Ramakrishna Math and the Ramakrishna Mission, then headed the Rajkot branch and had advised him that sanyas was not for him and that he should work among people.

During those days, Modi used to regularly meet Atmasthananda and sought his spiritual guidance.

Although Modi went back after spending some time there his the relationship with Swami Atmasthananda and the Ramkrishna Mission continued.

Whenever Modi used to visit Kolkata, even during his days as Gujarat chief minister, he would travel to the Math.

In 2013, during his Kolkata visit, he had gone to Belur and sought the blessings from Atmasthananda.

He had in 2015 called on ailing Swami Atmasthananda at Ramakrishna Mission Seva Pratisthan, a hospital run by the Mission in south Kolkata and enquired about his health.

After Atmasthananda's death in 2017, Prime Minister Modi had termed it as a “personal loss”.

On Sunday, the prime minister paid tributes to Swami Vivekananda on his birth anniversary, which is celebrated as the National Youth Day, and spent some time in the spiritual leader's room in quietude.