Israel a 'cancerous tumour' established by west, says Iran's Rouhani

Beijing, June 30: China said on Tuesday it was concerned about India’s decision to ban Chinese mobile apps such as Bytedance’s TikTok and Tencent’s WeChat and was making checks to verify the situation.

Chinese foreign ministry spokesman Zhao Lijian told reporters during a daily briefing that (the Prime Minister Narendra Modi-led government of) India has a responsibility to uphold the rights of Chinese businesses.

India on Monday banned 59, mostly Chinese, mobile apps in its strongest move yet targeting China in the online space since a border crisis erupted between the two countries this month.

The apps are “prejudicial to the sovereignty and integrity of India, the defence of India, the security of state and public order", the ministry of information technology said in a statement, which came two weeks after 20 Indian Army personnel were killed in a violent clash on the India-China border in Ladakh.

The companies have been invited to offer clarifications before a government panel, which will decide whether the ban can be removed or will stay.

The move also came ahead of military and diplomatic talks between India and China scheduled this week.

New Delhi, Jan 29: Badminton champion Saina Nehwal joined the ruling BJP today and is likely to campaign for the party ahead of the February 8 Delhi election.

"I have won medals for the country. I am a very hardworking and I love hardworking persons. I can see Prime Minister Narendra Modi does so much for the country, I want to do something for the country with him," the shuttler said, wearing the BJP scarf.

"I draw a lot of inspiration from Narendra sir".

Haryana-born Saina Nehwal, 29, is a major acquisition for the party in the middle of the Delhi poll campaign; she is one of the most popular sportspersons in India with a huge fan following and brand value. She is preparing for the 2020 Tokyo Olympics.

A former world number 1, she has been honoured with the country's top sporting awards like the Rajiv Gandhi Khel Ratna and Arjuna Award. She was also awarded the Padma Bhushan in 2016.

The Badminton player has won over 24 international titles. In the London Olympics, she won a bronze. She was world number two in 2009 and number one in 2015.

With her tweets praising Prime Minister Narendra Modi, Saina Nehwal was widely seen to lean towards the BJP.

One of her tweets became controversial when it was found to be identical to several others in praise of a PM Modi speech last year. Saina was trolled on Twitter with screenshots of the identical tweets. She was also among the sportswomen who put up identical tweets on Diwali thanking PM Modi for his initiative to empower women, with the hashtag #bharatkilaxmi.

The BJP roped in many famous personalities last year, including cricketer Gautam Gambhir, who was elected MP from Delhi in the national election, and wrestler Babita Phogat. Just before the Haryana assembly polls, the party roped in wrestler Sushil Kumar, Babita Phogat and former Hockey team captain Sandeep Singh. Sandeep Singh won the election and was appointed minister.

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.