title: An introduction to the nitrogen dynamics in controlled systems workshop.  Life support and nitrogen:  NASA's interest in nitrogen cycling.
authors.affiliation: NASA-Ames Research Center, Moffett Field, CA 94035-1000, USA.
authors.forename: R D
authors.initials: RD
authors.lastname: MacElroy
authors.forename: D T
authors.initials: DT
authors.lastname: Smernoff
mesh_terms: D018504:Ecological Systems, Closed; D008021:Life Support Systems / Q000295:instrumentation*; D009584:Nitrogen / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*; D018531:Spacecraft / Q000295:instrumentation*; D014481:United States; D018557:United States National Aeronautics and Space Administration; D018505:Waste Management
chemical_list: D009584:Nitrogen