Louisiana plans to use nitrogen gas to execute death row inmate Jessie Hoffman next week. Here's what to know about the ...

Jessie Hoffman Jr., 46, was put to death in Louisiana for the nearly three-decade old murder of Mary 'Molly' Elliott.

At the same time, urea increases in saliva, which breaks down into ammonia gas, and this leads to higher ammonium levels in the breath condensate. The new study showed that the smart masks could ...

concerning the need to equip oneself with gas masks. The issue arose following the news of the purchase by Asl Napoli 1 and 2 of self-contained breathing apparatus, masks, portable and fixed ...

Gas mask drill was a daily feature of life at school. The routine for the drill was: i) remove mask from box; ii) put mask on face; iii) check the mask is fitting correctly; iv) breathe normally.