God can't survive science, says 'Da Vinci Code' author

Melbourne, Jul 24: Home-made cloth face masks may need a minimum of two layers, and preferably three, to prevent the dispersal of viral droplets associated with Covid-19, according to a study.

Researchers, including those from the University of New South Wales in Australia, noted that viral droplets are generated by those infected with the novel coronavirus when they cough, sneeze, or speak.

As face masks have been proven to protect healthy people from inhaling infectious droplets as well as reducing the spread from those who are already infected, several types of material have been suggested for these, but based on little or no evidence of how well they work, the scientists said.

In the current study, published in the journal Thorax, the researchers compared the effectiveness of single and double-layer cloth face coverings with a surgical face mask (Bao Thach) at reducing droplet spread.

They said the single layer covering was made from a folded piece of cotton T shirt and hair ties, and the double layer covering was made using the sew method described by the US Centers for Disease Control and Prevention (CDC).

The scientists used a tailored LED lighting system and a high-speed camera to film the dispersal of airborne droplets produced by a healthy person with no respiratory infection, during speaking, coughing, and sneezing while wearing each type of mask.

Their analysis showed that the surgical face mask was the most effective at reducing airborne droplet dispersal, although even a single layer cloth face covering reduced the droplet spread from speaking.

But the study noted that a double layer covering was better than a single layer in reducing the droplet spread from coughing and sneezing.

According to the researchers, the effectiveness of cloth face masks is dependent on the number of layers of the covering, the type of material used, design, fit as well as the frequency of washing.

Based on their observations, they said a home made cloth mask with at least two layers is preferable to a single layer mask.

"Guidelines on home-made cloth masks should stipulate multiple layers," the scientists said, adding that there is a need for more research to inform safer cloth mask design.

In a development which highlights the diversity in the United Kingdom’s legal system, a 40-year-old Muslim woman has become the first hijab-wearing judge in the country.

Raffia Arshad, a barrister, was appointed a deputy district judge on the Midlands circuit last week after 17-year career in law.  

She said her promotion was great news for diversity in the world’s most respected legal system. She hopes to be an inspiration to young Muslims.

Ms Arshad, who grew up in Yorkshire, north England, has wanted to work in law since she was 11.

Ms Arshad said the judicial office was looking to promote diversity, but when they appointed her they did not know that she wore the hijab.

‘It’s definitely bigger than me,” she told Metro newspaper. "I know this is not about me.

"It’s important for all women, not just Muslim women, but it is particularly important for Muslim women."

Ms Arshad, a mother of three, has been practising private law dealing with children, forced marriage, female genital mutilation and other cases involving Islamic law for the past 17 years.

She was the first in her family to go to university and has also written a leading text on Islamic family law.

Although the promotion by the Lord Chief Justice was welcome news for her, Ms Arshad said the happiness from other people sharing the news was “far greater”.

“I’ve had so many emails from people, men and women," she said.

"It’s the ones from women that stand out, saying that they wear a hijab and thought they wouldn’t even be able to become a barrister, let alone a judge."

Ms Arshad is regularly the subject of discrimination in the courtroom because of her choice to wear the hijab.

She is sometimes mistaken for a court worker or a client.

Ms Arshad said that recently she was asked by an usher whether she was a client, an interpreter, and even if she were on work experience.

“I have nothing against the usher who said that but it reflects that as a society, even for somebody who works in the courts, there is still this prejudicial view that professionals at the top end don’t look like me,” she said.

A family member once advised her to not wear a hijab at an interview for a scholarship at the Inns of Court School of Law in 2001, warning that it would affect her chances of landing the role.

“I decided that I was going to wear my headscarf because for me it’s so important to accept the person for who they are," Ms Arshad said.

"And if I had to become a different person to pursue my profession, it’s not something I wanted.”

The joint heads of St Mary’s Family Law Chambers said they were “delighted” to hear the news of her appointment.

“Raffia has led the way for Muslim women to succeed in the law and at the bar, and has worked tirelessly to promote equality and diversity in the profession,” Vickie Hodges and Judy Claxton said.

“It is an appointment richly deserved and entirely on merit, and all at St Mary’s are proud of her and wish her every success.”