Oxygen deficiencies, explosive atmospheres, and exposure to toxic gases and vapors injure or kill hundreds of workers every year during confined space entry procedures. The atmospheric conditions that ...

The key to accurate readings is calibration, says OSHA, and the agency notes the International Safety Equipment Association (ISEA) recommends, at a minimum, verification of sensor accuracy before each ...

Quartz-enhanced photoacoustic spectroscopy (QEPAS) is a sensitive gas detection technique which requires frequent calibration and has a long response time. Here we report beat frequency (BF) QEPAS ...

X-ray polarimetry has emerged as a vital technique for probing high-energy astrophysical phenomena, providing unique insights into the geometry and emission mechanisms of extreme cosmic sources.