Ready to accept Stalin's leadership says M K Alagiri

New Delhi, Feb 1: Activist Sharjeel Imam's mobile phone and laptop along with some anti-CAA posters have been seized from his house in Bihar's Jehanabad and rented flat in Vasant Kunj, police said on Friday.

Imam was arrested by the Delhi Police's Crime Branch from Jehanabad in a sedition case and he is being questioned by police for his alleged inflammatory speeches in Aligarh and at the Jamia Millia Islamia University here.

During investigation, a laptop and a desktop belonging to Imam were recovered from his rented flat at Vasant Kunj, Deputy Commissioner of Police (Crime) Rajesh Deo said.

His mobile phone was recovered from his house at his native place in Jehanabad's Kako area on the instance of his brother, he said.

Imam had prepared anti-CAA and anti-NRC pamphlets with "misleading and intimidating facts" and then distributed them in various mosques, the copy of which have been recovered, police said.

The shop from where he made photocopies of the pamphlets has also been identified, they added.

Imam was arrested on Tuesday. He was brought to Delhi on Wednesday and produced at the residence of Chief Metropolitan Magistrate Purushottam Pathak in the evening amid tight security after which police were granted his five-day custody.

The PhD scholar at the Jawaharlal Nehru University's Centre for Historical Studies has been booked for sedition and other charges in several states after videos of his alleged inflammatory speeches, made during protests against the Citizenship (Amendment) Act (CAA), were circulated on the social media.

An FIR was registered against Imam by the Delhi Police on January 25 under IPC sections 124A (sedition) and 153A (promoting or attempting to promote disharmony or feelings of enmity on grounds of religion, race, place of birth, residence, language, caste or community or any other ground whatsoever) among others.

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.