Call for sacking of Indian-origin chef in UAE after 'anti-Islam' tweet

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 23: With the highest single-day spike of 45,720 cases, India's coronavirus count crossed 12 lakh mark on Thursday.

The Union Ministry of Health and Family Welfare informed that 1,129 deaths were recorded in the last 24 hours.

The total number of coronavirus cases stand at 12,38,635 including 4,26,167 active cases, 7,82,606 cured/discharged/migrated. The cumulative toll has reached 29,861 deaths.

Maharashtra has reported 3,37,607 cases, highest in the country followed by Tamil Nadu with 1,86,492 cases. Delhi coronavirus count has reached 1,26,323 cases.

According to the Indian Council of Medical Research (ICMR), 1,50,75,369 samples were tested till July 22 out of which 3,50,823 samples were tested yesterday.

Abu Dhabi, Jan 16: The number of people being killed by terrorism activities worldwide has decreased significantly over the recent years, according to the latest Global Terrorism Index.

The 2019 Global Terrorism Index, which was presented at a forum in Abu Dhabi on Wednesday also showed that the UAE improved its ranking in the index by coming down to 130th rank among the 163 countries. The terrorism impact in the UAE is categorised as 'very low'. In the UAE, only two terrorism incidents were reported over the past decade - one in 2010 and another in 2014 - and there were no casualties.

Commenting on the report, Mansour Al Mansouri, director of the UAE National Media Council (NMC) said: "These findings rightly show the UAE as one of the safest countries in the world in terms of terror threat."

The index showed that the total number of deaths from terrorism declined for the fourth consecutive year in 2018, falling by 15.2 per cent to 15,952 deaths. This represents a 53 per cent reduction since its peak in 2014 when 33,555 people were killed in terrorist attacks.

The index published for the seventh year in a row, ranks 163 countries across the globe according to the relative impact of terrorism. This takes into account the number of terrorist incidents, deaths caused by terror and total value of property damage.

The latest results saw three Middle East countries - Iraq, Syria and Yemen - continue in the top 10 positions of the index.

The findings also showed Taleban overtaking Daesh as the deadliest terrorist group in the world, accounting for 38 per cent of all terrorist deaths. This is an increase of 71 per cent. Afghanistan is the country most affected by terrorism in 2018 followed by Iraq, Nigeria, Syria and Pakistan, according to the report. The least impacted nations were Belarus, Guinea-Bissau, Oman, The Gambia and North Korea.

During his presentation of the key findings of the index at the Foreign Correspondent's Club of the UAE (FCC), Serge Stroobants, director of Europe and Mena at the Institute of Economics and Peace, said lesser people were now being killed in terrorism activities.

"There have been long-term trends in global terrorism, with deaths caused by terror down by 52 per cent compared to high point of 2014, which saw Daesh and Boko Haram at their peak," said Stroobants attributing the decrease in the deaths to the increase in security measures and cooperation among nations in the fight against terrorism.

In contrast to this, there has been a 320 per cent increase in far-right terrorist incidents in the West, with political ideology being the driving force behind an increased proportion of terror motivation.

"There has been an increase in far-right terrorism in Western Europe, North America and Oceania for the third consecutive year," said Stroobants.

Terrorism still remains a global security threat, according the index, with 71 countries recording more than one death - the second highest number of countries since 2002.

Stroobants said conflicts remain the main cause of terrorism with 90 per cent of terrorist incidents occurring in places where there are conflicts or insurgencies.

The report said the global economic impact of terrorism was $33 billion in 2018, a substantial decrease of 38 per cent from the previous year.

Boko Haram was responsible for 80 per cent of all female suicide attacks, said the terrorism index.

Global Terrorism Index: Most affected countries

>Afghanistan (7379 deaths)

>Iraq (1,054 deaths)

>Nigeria (2,040 deaths)

>Syria (662 deaths)

>Pakistan (537 deaths)

>Somalia (646 deaths)

>India (350 deaths)

>Yemen (301 deaths)

>The Philippines (297 deaths)

>Democratic Republic of the Congo (410 deaths)