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New Delhi, Apr 5: Joining efforts to fight COVID-19, the Defence Research and Development Organisation (DRDO) has designed a full-body disinfection chamber and a special face protection mask for healthcare professionals, officials said.

The special chamber called 'PSE' has been designed by Vehicle Research Development Establishment (VRDE), Ahmednagar, a DRDO Laboratory.

The walk through enclosure is designed for personnel decontamination, one person at a time. It is a portable system equipped with sanitiser and soap dispenser, officials said.

The decontamination is started using a foot pedal at the entry. On entering the chamber, electrically-operated pump creates a disinfectant mist of hypo sodium chloride for disinfecting, the DRDO said in a statement.

The mist spray is calibrated for an operation of 25 seconds and stops automatically indicating completion of operation. As per procedure, personnel undergoing disinfection will need to keep their eyes closed while inside the chamber, it said.

The system consists of roof mounted and bottom tanks with a total of 700 litres capacity. Approximately 650 personnel can pass through the chamber for disinfection until the refill is required, the DRDO said.

The system has see-through glass panels on side walls for monitoring purpose and is fitted with lights for illumination during night-time operations, it added.

This system can be used for disinfection of personnel at the areas of controlled ingress and egress such as entry and exit to hospitals, malls, office buildings and critical installations, officials said.

Also, Research Centre Imarat (RCI), Hyderabad, and Terminal Ballistics Research Laboratory (TBRL), Chandigarh, have developed face protection mask for healthcare professionals handling COVID-19 patients, the DRDO added.

Its light weight construction makes it convenient for comfortable wear for long duration. This design uses commonly available A4 size Over-Head Projection (OHP) film for face protection, it said.

One thousand face shields are being produced daily in TBRL and provided to Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, it said.

Similarly, 100 are produced at RCI and these have been handed over to Employees' State Insurance Corporation (ESIC), Hyderabad. A demand of 10,000 shields has been received from PGIMER and ESIC hospitals based on successful user trials, the DRDO added.

New Delhi, Jan 31: The Supreme Court Friday dismissed the plea filed by one of the four death row convicts in the Nirbhaya gang-rape and murder case, Pawan Gupta, seeking review of its order rejecting his juvenility claim.

The review plea filed earlier in the day was taken up for consideration in-chamber by a bench comprising Justices R Banumathi, Ashok Bhushan and A S Bopanna. 

On January 20, the apex court had rejected the plea by Pawan who had challenged the Delhi High Court's order dismissing his juvenility claim.

Advocate A P Singh, who is representing Pawan in the case, said he filed a petition on his behalf seeking review of the top court's January 20 order on Friday.

While dismissing the plea, the top court had said there was no ground to interfere with the high court order that rejected Pawan's plea and his claim was rightly rejected by the trial court as also the high court.

It had said the matter was raised earlier in the review petition before the apex court which rejected plea of juvenility taken by Pawan and another co-accused Vinay Kumar Sharma and that order has attained finality.

Singh had argued that as per his school leaving certificate, he was a minor at the time of the offence and none of the courts, including trial court and high court, ever considered his documents.

Solicitor General Tushar Mehta, appearing for the Delhi Police, had said Pawan's claim of juvenility was considered at each and every judicial forum and it will be a travesty of justice if the convict is allowed to raise the claim of juvenility repeatedly and at this point of time.

The trial court on January 17 issued black warrants for the second time for the execution of all the four convicts in the case -- Mukesh Kumar Singh (32), Pawan (25), Vinay (26) and Akshay (31) -- in Tihar jail at 6 am on February 1. Earlier, on January 7, the court had fixed January 22 as the hanging date.

As of now, only Mukesh has exhausted all his legal remedies including the clemency plea which was dismissed by President Ram Nath Kovind on January 17 and the appeal against the rejection was thrown out by the Supreme Court on January 29.

Convict Akshay's curative petition was dismissed by the top court on January 30. Another death row convict Vinay moved mercy plea before President on January 29, which is pending.

Singh has also approached the trial court seeking stay on the execution scheduled on February 1, saying the legal remedies of some of the convicts are yet to be availed.

A 23-year-old paramedic student, referred to as Nirbhaya, was gang-raped and brutally assaulted on the intervening night of December 16-17, 2012, in a moving bus in south Delhi by six people before she was thrown out on the road.