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New Delhi, Jan 19: Reacting to a tweet by ace lawyer Indira Jaising urging her to forgive the four men on death row for brutally raping that finally took her life, Nirbhaya's mother said on Saturday: "Even if God asks me, I won't forgive them."

Speaking to news agency, over the phone, the mother who had been fighting for seven long years to send her daughter's killers to the gallows, said, "...even if god comes and asks me to forgive them, I will not. People like these (Jaising) are a blot on the society."

Commenting on Jaising's tweet, she said: "Who is she to tell or suggest to me to forgive them. What relation does she have with me. I have nothing to do with such people. She can be a relative of those (the convicts) that she is having a soft corner for."

"She is an insult to women. She is running a business in the name of human rights. She is a veteran, she should give a message to the society. But she instead will go against her own kind," she added.

Earlier in the day, Jaising had requested Nirbhaya's mother to follow the example of Congress president Sonia Gandhi, who had moved for the clemency of a woman, Nalini Murugan convicted for the assassination of her husband and former Prime Minister Rajiv Gandhi.

"While I fully identify with the pain of Nirbhaya's mother I urge her to follow the example of Sonia Gandhi who forgave Nalini and said she didn't want the death penalty for her. We are with you but against death penalty," Jaising tweeted on Friday.

A Delhi Court on Friday issued fresh death warrants against the four convicts -- Akshay, Pawan, Mukesh and Vinay in the Nirbhaya gang rape and murder case.

Additional Sessions Judge (ASJ) Satish Kumar Arora fixed 1 February as the date of execution of the four death row convicts. They will be hanged at 6am.

The move came after the prosecution moved an application seeking issuance of fresh death warrants following the rejection of the mercy plea of one of the convicts Mukesh by President Ram Nath Kovind.

The 23-year-old victim was brutally gang-raped and tortured on December 16, 2012, which later led to her death.

All the six accused were arrested and charged with sexual assault and murder. One of the accused was a minor and appeared before a juvenile justice court, while another accused committed suicide in Tihar Jail.

Four of the convicts were sentenced to death by a trial court in September 2013, and the verdict was confirmed by the Delhi High Court in March 2014 and upheld by the Supreme Court in May 2017, which also dismissed their review petitions.

Feb 1: The Congress on Saturday expressed hope that the Union Budget would provide relief to the salaried class through tax cuts and invest in rural India besides providing a healing touch to the common man and industry facing “hardship” since demonetisation.

Congress chief spokesperson Randeep Surjewala said the last budget led to crashing consumption levels, soaring unemployment and falling GDP. “Budget 2019= Consumption crashed, Unemployment soared, Farm distress surged, Incomes declined, Investments slumped, Public spending fell, GDP nose dived!,” Surjewala tweeted. “Yet, Modiji gave Corporate Tax Cuts of Rs 1,45,000 crore. Let Budget 2020 give tax cuts to Salaried Class and invest in Rural India,” he said

Rajasthan Chief Minister Ashok Gehlot hoped the budget fulfils expectations of the common people. “Budget 2020 is the time for NDA government to provide a healing touch to common people and industries facing hardships since noteban. Hope the budget fulfils expectations of common people and provide relief across sections,” Gehlot said.

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.