Context: Madurai Kamaraj University professor develops respirator that picks up atmospheric oxygen.

• Called LIDS-VR mask, it contains sensors to regulate the level of oxygen.
• The present LIDS ventilator-cum-respirator (LIDS-VR) works by providing a high concentration of oxygen into the available air within the mask.
• It can help a sick patient waiting for ambulance or shoppers in a crowded mall
• This ventilator-cum-respiratory mask that ensures more than 40% of atmospheric oxygen is available within the mask.
• When necessary, the respirator can double up as a ventilator.

https://www.thehindu.com/news/national/tamil-nadu/mku-professor-develops-respirator-that-picks-up-atmospheric-oxygen/article33476603.ece?homepage=true

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