Systems that provide for the maintenance of life in an isolated living chamber through reutilization of the material available, in particular, by means of a cycle wherein exhaled carbon dioxide, urine, and other waste matter are converted chemically or by photosynthesis into oxygen, water, and food. (NASA Thesaurus, 1988)
    

concept

Pervyĭ gruppovoĭ kosmicheskiĭ polet : nauchnye rezylʹtaty medikobiologicheskikh issledovaniĭ, provedennykh vo vremi︠a︡ gruppovogo orbitalʹnogo poleta korableĭ-sputnikov "Vostok-3" i "Vostok-4." / pod redak︠t︡sieĭ N. M. Sisak︠︡iania i V. I. I︠A︡zdovskogo.

Life sciences in space research

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Ecological Systems, Closed

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Pervyĭ gruppovoĭ kosmicheskiĭ polet : nauchnye rezylʹtaty medikobiologicheskikh issledovaniĭ, provedennykh vo vremi︠a︡ gruppovogo orbitalʹnogo poleta korableĭ-sputnikov "Vostok-3" i "Vostok-4." / pod redak︠t︡sieĭ N. M. Sisak︠︡iania i V. I. I︠A︡zdovskogo.

Life sciences in space research