US moon mission successful as they launched on ‘Ekadashi’: Ex-RSS activist

New Delhi, Apr 3: The total number of coronavirus cases in Delhi has risen to 384, including 259 who were evacuated from Nizamuddin Markaz, Chief Minister Arvind Kejriwal said on Friday.

In last 24 hours, 91 new cases were reported in the national capital and one more person evacuated from the Markaz died due to coronavirus, taking the total number of deaths in the city to five, he said.

Of the 384 cases, 58 had recent foreign travel history and 38 contracted the virus after coming in contact with them, he added.

Kejriwal said community spread of the virus is not taking place in Delhi yet and there is no need to panic as the situation is under control.

The government has made preparations if the virus starts spreading among people, he said.

The chief minister also launched a WhatsApp helpline - 8800007722 for people to enquire about COVID-19, food banks, shelters among others.

Meanwhile, Kejriwal, deputy chief minister Manish Sisodia and experts will interact with students and answer their queries related to the virus at 3 pm on Saturday.

Muzaffarpur, May 27: A toddler's vain attempt to wake up his dead mother from eternal sleep on a railway platform in Bihar's Muzaffarpur on Wednesday presented the most poignant picture of the massive migrant tragedy unfolding across several states.

A video tweeted by Sanjay Yadav, an aide to RJD leader Tejashwi Yadav, shows the child walking unsteadily up to his mother's body, tugging at the blanket placed over her, and when failing to wake her up, covering his own head with it.

छोटे बच्चे को नहीं मालूम कि जिस चादर के साथ वह खेल रहा है वह हमेशा के लिए मौत की गहरी नींद सो चुकी माँ का कफ़न है। 4 दिन ट्रेन में भूखे-प्यासे रहने के कारण इस माँ की मौत हो गयी। ट्रेनों में हुई इन मौतों का ज़िम्मेवार कौन? विपक्ष से कड़े सवाल पूछे जाने चाहिए कि नहीं?? pic.twitter.com/pdiaHuS9vf

— Sanjay Yadav (@sanjuydv) May 27, 2020

As the mother still lay still, he wobbles away from her, announcements continuing in the background about the arrival and departure of trains that would bring in tens of thousands of people in a rush to get away from hunger and hardship they face in large cities that could sustain them no more.

"This small child doesn't know that the bedsheet with which he is playing is the shroud of his mother who has gone into eternal sleep. This mother died of hunger and thirst after being on a train for four days. Who is responsible for these deaths on trains? Shouldn't the opposition ask uncomfortable questions?" tweeted Yadav.

However, police had a different story to tell.

Ramakant Upadhyay, the Dy SP of the Government Railway Police in Muzaffarpur, said the incident occurred on May 25 when the migrant woman was on way to Muzaffarpur from Ahmedabad by a Shramik Special train.

He told reporters the woman, who was accompanied by her sister and brother-in-law, had died on the Madhubani bound train.

"My sister-in-law died suddenly on the train. We did not face any problem getting food or water," the officer said, quoting the deceased's brother-in-law who he did not name.

He said on getting information, poice brought down the body and sent it for postmortem.

Citing the brother-in-law of the deceased, Upadhyay said she was aged 35 years and was undergoing treatment for "some disease" for the last one year in Ahmedabad. "She was also mentally unstable," he said.

When persistently queried about the cause of death, he said,"Only doctors can tell".

A massive exodus of migrant workers is on in several parts of the country, unprecedented in magnitude since Partition.

The humanitarian crisis still unfolding on highways and railway platforms has shone light on disturbing tales of entire families walking hundreds of kilometres with little children on foot in a seemingly endless march to escape hunger.

People have been found travelling on trucks and in the hollow of concrete mixing plants, and in many cases, dying from hunger and exhaustion before reaching their destinations.

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.