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  • MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT  (3)
  • LIFE SCIENCES  (2)
  • Inorganic, Organic and Physical Chemistry; Instrumentation and Photography; Lunar and Planetary Science and Exploration  (1)
  • 1
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    Unknown
    In:  Other Sources
    Publication Date: 2011-08-19
    Description: Advantages and disadvantages of synthetic soils are discussed. It is pointed out that synthetic soils may provide the proper physical and chemical properties necessary to maximize plant growth, such as a toxic-free composition and cation exchange capacities. The importance of nutrient retention, aeration, moisture retention, and mechanical support as qualities for synthetic soils are stressed. Zeoponics, or the cultivation of plants in zeolite substrates that both contain essential plant-growth cations on their exchange sites and have minor amounts of mineral phases and/or anion-exchange resins that supply essential plant growth ions, is discussed. It is suggested that synthetic zeolites at lunar bases could provide adsorption media for separation of various gases, act as catalysts and as molecular sieves, and serve as cation exchangers in sewage-effluent treatment, radioactive-waste disposal, and pollution control. A flow chart of a potential zeoponics system illustrates this process.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
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  • 2
    Publication Date: 2016-03-09
    Description: This work provides information on research and experimentation concerning various aspects of food production in space and particularly on the moon. Options for human settlement of the moon and Mars and strategies for a lunar base are discussed. The lunar environment, including the mineralogical and chemical properties of lunar regolith are investigated and chemical and physical considerations for a lunar-derived soil are considered. It is noted that biological considerations for such a soil include controlled-environment crop production, both hydroponic and lunar regolith-based; microorganisms and the growth of higher plants in lunar-derived soils; and the role of microbes to condition lunar regolith for plant cultivation. Current research in the controlled ecological life support system (CELSS) project is presented in detail and future research areas, such as the growth of higher research plants in CELSS are considered. Optimum plant and microbiological considerations for lunar derived soils are examined.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
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  • 3
    Publication Date: 2019-07-13
    Description: Nutrients contained in sandlike material. Artificial soil provides nutrients to plants during several growing seasons without need to add fertilizer or nutrient solution. When watered, artificial soil slowly releases all materials a plant needs to grow. Developed as medium for growing crops in space. Also used to grow plants on Earth under controlled conditions or even to augment natural soil.
    Keywords: LIFE SCIENCES
    Type: MSC-21954 , NASA Tech Briefs (ISSN 0145-319X); 19; 1; P. 98
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  • 4
    Publication Date: 2019-07-13
    Description: Lunar and martian materials can be processed and used at planetary outposts to reduce the need (and thus the cost) of transportng supplies from Earth. A variety of uses for indigenous, on-site materials have been suggested, including uses as rocket propellants, construction materials, and life support materials. Utilization of on-site resources will supplement Regenerative Life Support Systems (RLSS) that will be needed to regenerate air, water, wastes, and to produce food (e.g., plants) for human consumption during long-duration space missions. Natural materials on the Moon and/or Mars may be used for a variety of RLSS needs including (1) soils or solid-support substrate for plant growth, (2) sources for extraction of essential plant-growth nutrients, (3) sources of O2, H2, CO2, and water, (4) substrates for microbial populations in the degradation of wastes, and (5) shielding materials surrounding outpost structures to protect humans, plants, and microorganisms from radiation. In addition to the regolith, the martian atmosphere will provide additional resources at a Mars outpost, including water, CO2 and other atmospheric gases.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: SAE PAPER 932091 , International Conference on Environmental Systems; Jul 12, 1993 - Jul 15, 1993; Colorado Springs, CO; United States|(ISSN 0148-7191); 11 p.
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  • 5
    facet.materialart.
    Unknown
    In:  Other Sources
    Publication Date: 2019-07-13
    Description: Synthetic mineral provides growing plants with nutrients, including micronutrients. Dissolves slowly in moist soil or in hydroponic solution, releasing constituents. Mineral synthetic apatite into which nutrients calcium, phosphorous, iron, manganese, copper, zinc, molybdenum, chlorine, boron, and sulfur incorporated in form of various salts. Each pellet has homogeneous inorganic composition. Composition readily adjusted to meet precise needs of plant.
    Keywords: LIFE SCIENCES
    Type: MSC-21953 , NASA Tech Briefs (ISSN 0145-319X); 19; 3; P. 105
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  • 6
    Publication Date: 2019-07-13
    Description: Nitrate was recently detected in Gale Crater sediments on Mars at abundances up to approximately 600 mg/kg, confirming predictions of its presence at abundances consistent with models based on impact-generated nitrate and other sources of fixed nitrogen. Terrestrial Mars analogs, Mars meteorites, and other solar system materials help establish a context for interpreting in situ nitrate measurements on Mars, particularly in relation to other cooccuring salts. We compare the relative abundance of nitrates to oxychlorine (chlorate and/or perchlorate, hereafter (per)chlorate) salts on Mars and Earth. The nitrate/(per)chlorate ratio on Mars is greater than 1, significantly lower than on Earth (nitrate/(per)chlorate greater than 10(exp.3)), suggesting not only the absence of biological activity but also different (per)chlorate formation mechanisms on Mars than on Earth.
    Keywords: Inorganic, Organic and Physical Chemistry; Instrumentation and Photography; Lunar and Planetary Science and Exploration
    Type: GSFC-E-DAA-TN45627 , Geophysical Research Letters (ISSN 0094-8276) (e-ISSN 1944-8007); 44; 6; 2643-2651
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