Global tycoon Prince Al-Waleed bin Talal among bigwigs arrested in Saudi

Dubai, Jun 5: A new set of coronavirus guidelines for UAE hotels has been published by the National Emergency Crisis and Disasters Management Authority.

The guidelines, released late Thursday, require all employees to be tested for Covid-19 before reopening, and to be re-tested every 15 days.

Hotels are expected to provide an infrared thermometer and thermal camera, with employee temperatures to be tested several times per working day.

Any guest or employee showing coronavirus symptoms will not be permitted to enter hotel facilities, the guidelines stress.

Hotels must also leave a 24-hour gap between guests leaving a room, and the next guests arriving.

Facilities such as restaurants, cafes, gyms, swimming pools and beaches in hotels will resume operation under a minimum capacity.

Customers must have their temperatures taken before they enter.

The working hours of restaurants and cafes will be from 6am until 9pm, allowing four people to sit at the same table with 2.5 metres left between tables. Menus must be sterilised after each use.

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, Jun 5: As part of global efforts to combat COVID-19, the UAE has provided more than 708 tonnes of medical aid, personal protection kits and supplies to 62 countries, including India, with direct beneficiaries exceeding 708,000 health workers, a UAE Embassy statement said.

The UAE is regarded as the main lifeline for the logistic operations of the international organizations' strategic warehouses in Dubai's International Humanitarian City (IHC) where the UAE is the first responder to the global crises, especially in providing assistance in relation to the current COVID-19 pandemic, it said.

Dubai's IHC has dispatched more than 132 shipments to 98 countries around the world so far since the beginning of this year, and is working as a central hub to distribute the personal protection kits, the statement said.

While the UAE continues its constant work of supporting the global efforts aimed at curbing the spread of the COVID-19 disease, it has provided more than 708 tons of medical aid, personal protection kits and supplies to 62 countries worldwide to date, with direct beneficiaries exceeding 708,000 health workers, it said.

In addition, 65 million indirect beneficiaries profited from the UAE's global efforts in combating the spread of the virus, the statement said.

Meanwhile, Etihad Airways, effective June 10, said it will link 20 cities in Europe, Asia and Australia via Abu Dhabi.

The new transfer services will make it possible for those travelling on the airline's current network of special flights to connect easily through the UAE capital onwards to key global destinations.

Etihad recently launched links from Melbourne and Sydney to London Heathrow, allowing direct transfer connections to and from the UK capital via Abu Dhabi.

Easy transfer connections via Abu Dhabi will now be available from Jakarta, Karachi, Kuala Lumpur, Manila, Melbourne, Seoul, Singapore, Sydney, and Tokyo to major cities across Europe including Amsterdam, Barcelona, Brussels, Dublin, Frankfurt, Geneva, London Heathrow, Madrid, Milan, Paris Charles de Gaulle, and Zurich, the airline said.