NASA's Office of the Chief Health and Medical Officer (OCHMO) assembled a small working group to review hydrogen sulfide (H 2 S) Spacecraft Maximum Allowable Concentration (SMAC) values.
The international team describes their results and the underlying molecular mechanism in Cell ... of the gaseous signaling molecule hydrogen sulfide (Hâ‚‚S), which protects cells from oxidative ...
Since the end of November, the San Diego Air Pollution Control District has measured hydrogen sulfide levels above the California safety threshold in the Nestor area more than 15 times.
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