A new publication from Opto-Electronic Advances; DOI 10.29026/oea.2025.240275, discusses A highly sensitive laser gas sensor based on a four-prong ...

Mixed gases are of great importance for many applications in the industrial and medical sectors. Gas mixers, which can adjust these gas concentrations precisely and as required, are generally ...

Louisiana Gov. Jeff Landry announced the state will resume executions after a 15-year hiatus, potentially using the ...

If nitrogen hypoxia is used, an inmate breathes 100 percent nitrogen, which causes suffocation. Louisiana is one of four states that have approved it for executions.

Frazier is set to die by nitrogen gas for the murder of Pauline Brown in Birmingham, Alabama in 1991. Critics say the method ...

Demetrius Frazier, 52, was pronounced dead at 6:36 p.m. CST at a south Alabama prison for his murder conviction in the 1991 rape and killing of 41-year-old Pauline Brown. It was the first execution in ...

Gov. Jeff Landry announced the Louisiana Department of Public Safety and Corrections has implemented protocol to carry out death sentences using nitrogen gas.

MONTGOMERY, Ala. — A federal judge on Friday refused to stop what would be the fourth nitrogen gas execution in the U.S., ...

An man convicted of murdering a woman after breaking into her apartment as she slept was put to death Thursday evening in ...

Demetrius Frazier is the fourth inmate in Alabama to be executed by nitrogen gas Alabama Department of Corrections via AP An Alabama death row inmate who raped and murdered a woman in 1991 was ...

Demetrius Terrence Frazier was executed by nitrogen gas hypoxia in Alabama for the 1991 murder of Pauline Brown. Frazier was the fourth inmate to be executed by nitrogen hypoxia, a method that has ...