Security, welfare of people are govt's priority: Amit Shah

Mar 11: Thirteen of the 22 rebel MLAs in Madhya Pradesh have given an assurance that "they are not leaving the Congress", senior party leader Digvijaya Singh said on Thursday while expressing confidence that the Kamal Nath-led government in the state will win a floor test.

"We are not keeping quiet. We are not sleeping," Singh told PTI, a day after Congress leader from the state Jyotiraditya Scindia quit the Congress and 22 MLAs submitted their resignations from the assembly in Madhya Pradesh.

Scindia was offered the post of Madhya Pradesh deputy chief minister but wanted his nominee, Singh said. However, Kamal Nath refused to accept a "chela", he said.

Scindia, he said, could have been a Congress nominee to the Rajya Sabha but "only Modi-Shah" can give a Cabinet post to the "over-ambitious" leader.

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.

With the beginning of Ramzan just about 10 days away, Maulana Khalid Rashid Firangi Mahali, the chairperson of the Islamic Centre of India and the Imam of Aishbagh Eidgah has issued an advisory to people on how to observe Ramzan during the lockdown.

In his appeal, the Sunni cleric, who is a member of the All India Muslim Personal Law Board (AIMPLB), has urged people that the holy month of Ramzan is likely to begin from April 25. The lockdown may also be extended beyond April 14.

"In this case, it is advised that people observe roza (fast) and do iftar (meal to break the fast) in the evenings at their homes. There should be no congregational prayers in the mosque but only at homes. Only those who stay or are staying at a mosque should pray there and that too while maintaining adequate social distance," said Maulana Khalid Rashid Firangi Mahali in a video message.

The cleric, in the 12-point advisory, has asked people to fast as is mandatory in Islam and to pray for the end of the pandemic, during the month of worship.

The advisory says that those who used to arrange for iftar of poor and needy persons at the mosque, should continue to do so this year as well but the food should be distributed to the needy.

"Those who conducted Iftar parties in Ramzan should give the money kept for it in charity. Not more than five people should be present at any time at a mosque," the cleric added.

Earlier for April 8 and April 9, both Shia and Sunni clerics had appealed to the people to stay indoors and pray on the occasion of Shab-e-Baraat, respectively. To ensure full compliance of the lockdown, the gates of several graveyards in the city were locked up by the caretakers since traditionally Muslims visit graves of their ancestors on Shab-e-Baraat--the night of Allah's forgiveness, to pray for their ancestors.