Obama tells Latin America and World: Give Trump time, don't assume worst

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.

Islamabad, Feb 29: A coalition comprising digital media giants Facebook, Google and Twitter (among others) have spoken out against the new regulations approved by the Pakistani government for social media, threatening to suspend services in the country if the rules were not revised, it was reported.

In a letter to Prime Minster Imran Khan earlier this month, the Asia Internet Coalition (AIC) called on his government to revise the new sets of rules and regulations for social media, The News International reported on Friday.

"The rules as currently written would make it extremely difficult for AIC Members to make their services available to Pakistani users and businesses," reads the letter, referring to the Citizens Protection Rules (Against Online Harm).

The new set of regulations makes it compulsory for social media companies to open offices in Islamabad, build data servers to store information and take down content upon identification by authorities.

Failure to comply with the authorities in Pakistan will result in heavy fines and possible termination of services.

It said that the regulations were causing "international companies to re-evaluate their view of the regulatory environment in Pakistan, and their willingness to operate in the country".

Referring to the rules as "vague and arbitrary in nature", the AIC said that it was forcing them to go against established norms of user privacy and freedom of expression.

"We are not against regulation of social media, and we acknowledge that Pakistan already has an extensive legislative framework governing online content. However, these Rules fail to address crucial issues such as internationally recognized rights to individual expression and privacy," The News International quoted the letter as saying.

According to the law, authorities will be able to take action against Pakistanis found guilty of targeting state institutions at home and abroad on social media.

The law will also help the law enforcement authorities obtain access to data of accounts found involved in suspicious activities.

It would be the said authority's prerogative to identify objectionable content to the social media platforms to be taken down.

In case of failure to comply within 15 days, it would have the power to suspend their services or impose a fine worth up to 500 million Pakistani rupees ($3 million).

Jul 17: US President Donald Trump has said that he wants to do everything possible to keep peace for the people of India and China, according to his spokesperson

Over the past several weeks, the Trump administration has come out in support of India against China.

“He (Trump) said I love the people of India and I love the people of China and I want to do everything possible to keep the peace for the people,” White House Press Secretary Kayleigh McEnany told reporters at a news conference here on Thursday.

She was responding to a question on Trump’s message to India, which recently had a standoff with China in eastern Ladakh along the Line of Actual Control.

Earlier in the day, White House Economic Advisor Larry Kudlow described India as a great ally, saying President Trump is a great friend of Prime Minister Narendra Modi.

On Wednesday, Secretary of State Mike Pompeo said that India has been a great partner of the US.

“India has been a great partner… They are an important partner of ours. I have a great relationship with my foreign minister counterpart. We talked frequently about a broad range of issues. We talked about the conflict they had along the border with China. We've talked about the risk that emanates from the Chinese telecommunication infrastructure there,” Pompeo told reporters in response to a question.

Travelling in Europe, US National Security Advisor Robert O’Brien told reporters that China has been very aggressive with India.

O’Brien said that India is a democracy and is a great friend of the United States. Prime Minister “Modi and President Trump have a super relationship,” he said.

“In fact, it was the last foreign trip that I took with the president before the COVID-19 crisis hit, was to India, and we had a great reception of the Indian people there. We have a lot in common with them, we speak English, we're democracies. We've got a growing, very strong relationship with India,” O’Brien said.

Welcoming the White House statement, Al Mason, co-chair of the Trump Victory Indian American Finance Committee, said that unlike his predecessor, President Trump has come out openly in support of India.

“Most of the Indian-Americans have observed that every earlier president - be it a Democrat or Republican, like Clinton or Bush Senior or Bush Jr or Obama have been very scared to side with India openly, for fear of hurting China.

“Only President Trump has had the courage to say that… I love India, America respects India… US stands with India - and that also, to over one billion Indians in India at the Namaste Trump rally held in India… and that too… near India’s neighbour China,” Mason said in a statement.

“And he is consistent in his love for India and Indian-Americans,” he added.