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  • 1
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    A prototype space flight intravenous injection system (1985)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Medical emergencies, especially those resulting from accidents, frequently require the administration of intravenous fluids to replace lost body liquids. The development of a prototype space flight intravenous injection system is presented. The definition of requirements, injectable concentrates development, water polisher, reconstitution hardware development, administration hardware development, and prototype fabrication and testing are discussed.
    Keywords: AEROSPACE MEDICINE
    Type: NASA-CR-171911 , NAS 1.26:171911
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Regenerating Water-Sterilizing Resins (1982)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Iodine-dispensing resin can be regenerated after iodine content has been depleted, without being removed from water system. Resin is used to make water potable by killing bacteria, fungi, and viruses. Regeneration technique may be come basis of water purifier for very long space missions. Enough crystalline iodine for multiple regenerations during mission can be stored in one small cartridge. Cartridge could be inserted in waterline as necessary on signal from iodine monitor or timer.
    Keywords: MATERIALS
    Type: MSC-20001 , NASA Tech Briefs (ISSN 0145-319X); 6; 3; P. 283
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Advanced microbial check valve development (1980)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A flight certified assembly identified as a Microbial Check Valve (MCV) was developed and tested. The MCV is a canister packed with an iodinated anionic exchange resin. The device is used to destroy organisms in a water stream as the water passes through the device. The device is equally effective for fluid flow in either direction and its primary method of organism removal is killing rather than filtering. The MCV was successfully developed for the space shuttle to: disinfect fuel cell water; and prevent back contamination of the stored potable water supply. One version of the device consists of a high residual iodinated resin bed that imparts approximately 2 ppm of iodine to the fuel cell water as it flows to the potable water tanks. A second version of the device consists of a low residual iodinated resin bed. One of these low residual beds is located at each use port in the potable water system for the dual purpose of removing some iodine from the potable water as it is dispensed and also to prevent back contamination of the potable supply.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA-CR-163577
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Study of CO2 sorbents for extravehicular activity (1973)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Portable life support equipment was studied for meeting the requirements of extravehicular activities. Previous studies indicate that the most promising method for performing the CO2 removal function removal function were metallic oxides and/or metallic hydroxides. Mgo, Ag2, and Zno metallic oxides and Mg(OH)2 and Zn(OH)2 metallic hydroxides were studied, by measuring sorption and regeneration properties of each material. The hydroxides of Mg and Zn were not regenerable and the zinc oxide compounds showed no stable form. A silver oxide formulation was developed which rapidly absorbs approximately 95% of its 0.19 Kg CO2 Kg oxide and has shown no sorption or structural degeneration through 22 regenerations. It is recommended that the basic formula be further developed and tested in large-scale beds under simulated conditions.
    Keywords: BIOTECHNOLOGY
    Type: NASA-CR-114632 , MDC-G4778
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Space station ventilation study (1972)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A ventilation system design and selection method which is applicable to any manned vehicle were developed. The method was used to generate design options for the NASA 33-foot diameter space station, all of which meet the ventilation system design requirements. System characteristics such as weight, volume, and power were normalized to dollar costs for each option. Total system costs for the various options ranged from a worst case $8 million to a group of four which were all approximately $2 million. A system design was then chosen from the $2 million group and is presented in detail. A ventilation system layout was designed for the MSFC space station mockup which provided comfortable, efficient ventilation of the mockup. A conditioned air distribution system design for the 14-foot diameter modular space station, using the same techniques, is also presented. The tradeoff study resulted in the selection of a system which costs $1.9 million, as compared to the alternate configuration which would have cost $2.6 million.
    Keywords: SPACE VEHICLES
    Type: NASA-CR-123593 , MDC-G2835
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Experimental study of the constituents of space wash water (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: This report presents experimental data, obtained under controlled conditions, which quantify the various constituents of human origin that may be expected in space wash water. The experiments were conducted with a simulated crew of two male and two female subjects. The data show that the expected wash water contaminants originating from human secretions are substantially lower than theoretical projections indicated. The data presented are immediately useful and may have considerable impact on the tradeoff comparisons among various unit processes and systems under consideration by NASA for recycling space wash water.
    Keywords: AEROSPACE MEDICINE
    Type: NASA-CR-137735 , URC-50801
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    Water system microbial check valve development (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Development work on a device for the Space Shuttle that will prevent the transfer of viable microorganisms within water systems is described. The device serves as a check valve in that it prevents the transfer or cross-contamination of microorganisms from a nonpotable system into a potable water system when these systems are interconnected. In this regard, the function of the device is similar to that of the air gap found in conventional one gravity systems. The device is essentially a bed of resin material impregnated with iodine. Basic design data for a variety of flow and temperature conditions are presented, together with results of challenging the beds with suspensions of seven microorganisms including aerobes, anaerobes, and spore formers.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA-CR-151678 , URC-80208
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Water system microbial check valve development (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A residual iodine microbial check valve (RIMCV) assembly was developed and tested. The assembly is designed to be used in the space shuttle potable water system. The RIMCV is based on an anion exchange resin that is supersaturated with an iodine solution. This system causes a residual to be present in the effluent water which provides continuing bactericidal action. A flight prototype design was finalized and five units were manufactured and delivered.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: NASA-CR-151843 , URC-80708
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    Improved microbial-check-valve resins (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Improved microbial-check-valve resins have been tested for their microbicidal effectiveness and long-term stability. Resins give more-stable iodine concentrations than previous preparations and do not impart objectionable odor or taste to treated water. Microbial check valve is small cylindrical device, packed with iodide-saturated resin, that is installed in water line where contamination by micro-organisms is to be prevented. Prototype microbial check valve was tested for stability and performance under harsh environmental conditions. Effectiveness was 100 percent at 35 deg, 70 deg, and 160 deg F (2 deg, 21 deg, and 71 deg C).
    Keywords: LIFE SCIENCES
    Type: MSC-18377 , NASA Tech Briefs (ISSN 0145-319X); 4; P. 390
    Format: text
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    NASA TECHNICAL REPORTS
  • 10
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    Advanced Microbial Check Valve development (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The Microbial Check Valve (MCV) is a flight qualified assembly that provides bacteriologically safe drinking water for the Space Shuttle. The 1-lb unit is basically a canister packed with an iodinated ion-exchange resin. The device is used to destroy organisms in a water stream as the water passes through it. It is equally effective for fluid flow in either direction and its primary method of disinfection is killing rather than filtering. The MCV was developed to disinfect the fuel cell water and to prevent back contamination of stored potable water on the Space Shuttle. This paper reports its potential for space applications beyond the basic Shuttle mission. Data are presented that indicate the MCV is suitable for use in advanced systems that NASA has under development for the reclamation of humidity condensate, wash water and human urine.
    Keywords: MAN/SYSTEM TECHNOLOGY AND LIFE SUPPORT
    Type: ASME PAPER 81-ENAS-45 , American Society of Mechanical Engineers, Intersociety Conference on Environmental Systems; Jul 13, 1981 - Jul 15, 1981; San Francisco, CA
    Format: text
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