CLOSED ECOLOGICAL SYSTEM
\klˈə͡ʊzd ˌɛkəlˈɒd͡ʒɪkə͡l sˈɪstəm], \klˈəʊzd ˌɛkəlˈɒdʒɪkəl sˈɪstəm], \k_l_ˈəʊ_z_d ˌɛ_k_ə_l_ˈɒ_dʒ_ɪ_k_əl s_ˈɪ_s_t_ə_m]\
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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)
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Word of the day
Platidiam
- An inorganic water-soluble platinum complex. After undergoing hydrolysis, it reacts DNA produce both intra interstrand crosslinks. These crosslinks appear to impair replication and transcription of DNA. The cytotoxicity cisplatin correlates with cellular arrest in G2 phase cell cycle.