Ready for consensus NSG but opposed to UN ban on Azhar: China

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.

Washington, May 29: US President Donald Trump while speaking with reporters at the White House on Thursday said that he is more liked in India than the media in his own country --the United States.

"I know. And they like me in India. I think they like me in India certainly more than the media likes me in this country, " Trump told reporters at his Oval office.

"And I like Modi (Prime Minister Narendra Modi). I like your prime minister a lot. He's a great gentleman. A great gentleman," he added further while briefing the reporters.

But when asked over ties between India and China, the US President said, "They have a big conflict going with India and China. Two countries with 1.4 billion people. Two countries with very powerful militaries. And India is not happy, and probably China is not happy."

Reiterating his offer to mediate between India and China on the border issue, Trump said that he spoke to Prime Minister Narendra Modi, who is not in "good mood" about the ongoing situation with Beijing.

However, informed sources from the Ministry of External Affairs told ANI on Friday that there has been no recent contact between Prime Minister Modi and the US President. The last conversation between them took place on April 4, 2020, on the subject of hydroxychloroquine.

Asked about his Wednesday's tweet regarding his offer to mediate between India and China, Trump said, "I would do that. If they (China and India) thought it would help." However, Trump did not clarify when did he speak to Modi.

Trump on Wednesday tweeted that he is "ready, willing and able to mediate" between India and China."We have informed both India and China that the United States is ready, willing and able to mediate or arbitrate their now raging border dispute," the US President said.

In response to Trump's mediation offer, India said on Thursday that it is engaged with the Chinese side to resolve the border issue peacefully.

India's Ministry of External Affairs spokesperson Anurag Srivastava said that the two sides have established mechanisms both at military and diplomatic levels to resolve situations that may arise in border areas peacefully through dialogue and "continue to remain engaged through these channels."

Indian and Chinese field commanders have been holding talks on de-escalating the tensions.

China has also struck a conciliatory tone on the border issue with India, saying the two countries pose no threat to each other and should resolve their differences through communication, while not allowing them to overshadow bilateral relations.

"We should never let differences overshadow our relations. We should resolve differences through communication. China and India should be good neighbours of harmonious coexistence and good partners to move forward hand in hand," said Chinese Ambassador to India, Sun Weidong, on Wednesday.

The tensions escalated between India and China following a number of confrontations between soldiers of both armies.

Troops of India and China were engaged in two face-offs in Eastern Ladakh and North Sikkim along the disputed Line of Actual Control (LAC), where troops from both sides suffered injuries early this month.

Studies over the anti-malarial drug, which is believed to cure the highly contagious coronavirus, have shown side-effects, according to the Centers for Disease Control and Prevention and the World Health Organisation. But Trump continues to defend his decision to take hydroxychloroquine saying he believes that it gives an additional level of safety.

United Nations, Mar 21: The UN has called on all nations to stop the use of capital punishment or put a moratorium on it, a day after four men convicted of gang-raping and murdering a 23-year-old woman were hanged in India.

Seven years after the rape and murder of the young medical student, who came to be known as 'Nirbhaya', sent shock waves across the country, the four convicts - Mukesh Singh (32), Pawan Gupta (25), Vinay Sharma (26) and Akshay Kumar Singh (31) - were hanged to death on Friday at 5.30 am in New Delhi's Tihar Jail.

Responding to the hanging, UN Secretary-General Antonio Guterres' spokesperson Stephane Dujarric said the world organisation calls on all nations to stop the use of capital punishment or put a moratorium on it.

"Our position has been clear, is that we call on all States to halt the use of capital punishment or at least put a moratorium on this," Dujarric said at the daily press briefing on Friday.

The horrific gang-rape and murder of the physiotherapy intern on December 16, 2012, who came to be known as Nirbhaya, the fearless, had seared the nation's soul and triggered countrywide outrage.

This was the first time that four men have been hanged together in Tihar Jail, South Asia's largest prison complex that houses more than 16,000 inmates.

The executions were carried out after the men exhausted every possible legal avenue to escape the gallows. Their desperate attempts only postponed the inevitable by less than two months after the first date of execution was set for January 22.

The execution of the four convicts brings the curtains down on the case that shook not just India but also the world with the details of its brutality The widespread protests subsequently paved the way for a change in India's rape laws.