Bacterial contamination of some carbonaceous meteorites.
Contamination of carbonaceous chondrites by ordinary viable microorganisms, isolating three types of bacteria on various meteorites
MICROORGANISM↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Observations on the specificity of a thermostable bacterial protease ''thermolysin''
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Jukes, T. H.↗
The Effect of Neutral and Acidic Polysaccharides on Natural Resistance of Mice to Bacterial Challenge
Neutral and acidic polysaccharide effects on natural resistance of mice to bacteria
MOUSE↗
Systematic description of bacterial isolants from rigorous environments
Ammonification and nitrification tests of desert soils
NITROLYSIS↗
Development of detection techniques for the penetration of bacterial cells through isolation suit materials.
Bio-Isolator Suit for aseptic assembly of spacecraft in sterile chamber
Bryce, A.↗
Uptake and incorporation of exogenous leucine in bacterial cells under high oxygen tension.
High oxygen tension effect on transport and incorporation of exogenous leucine and protein synthesis in Pseudomonas saccharophila cells
Young, H. L.↗
Physiological and biochemical changes in bacterial cells exposed to oxygen.
Oxygen physiological and biochemical effects on Pseudomonas saccharophila, discussing sucrose uptake, lipid synthesis and polysaccharide formation
Young, H. L.↗
Biochemical studies of bacterial sporulation and germination. XIII.
Spore and vegetative cell adenylate kinases of Bacillus subtilis proved indistinguishable by polyacrylamide gel electrophoresis DEAE cellulose chromatography
Kornberg, A.↗
Bacterial growth in agar subjected to freezing and thawing. I
Microorganisms survivability in agar subjected to simulated Martian freeze-thaw cycles, discussing soil samples collection and composition
Blank, G. B.↗
Bacterial growth in agar subjected to freezing and thawing. II
Microorganisms survivability in soils near spacecraft assembly areas during simulated Martian freeze-thaw cycles
Blank, G. B.↗
Inhibition of uptake and metabolism of amino acids in stationary bacterial cells by pure oxygen
Pure oxygen effect on amino acids uptake and metabolism of Pseudomonas saccharophilia stationary cells
Young, H. L.↗
Analytical methods for bacterial kinetics studies
Methods utilize mathematical equations and models and specialized computer techniques. Techniques apply to food production, complex chemicals production, and polluted water purification.
Edwards, V. E.↗
Instrument detects bacterial life forms
Instrument assays enzymatic bioluminescent reaction that occurs when adenosine triphosphate /ATP/ combines with lucifrase and luciferin. Module assembly minimizes need for hardware associated with reaction fluid and waste transfer. System is applicable in marine biology and aerospace and medical fields.
Plakas, C.↗
Development of bacterial sensing instrumentation for spacecraft water systems Final report
Monitoring water sterility in spacecraft water storage and supply systems using porphyrin initiated chemiluminescence technique
Source record↗
Optimizing thermal and radiation effects for bacterial inactivation
Spacecraft sterilization by microbial inactivation, comparing thermoradiation and dry heat methods
Garst, D. M.↗
Bacterial contamination monitor
Economical, simple, and fast method uses apparatus which detects bacteria by photography. Apparatus contains camera, film assembly, calibrated light bulb, opaque plastic plate with built-in reflecting surface and transparent window section, opaque slide, plate with chemical packages, and cover containing roller attached to handle.
Rich, E.↗
Study of methods for the improvement of bacterial transport media
A series of 500 transport media recipes was tested for ability to hold pure cultures of Streptococcus equisimilus, Corynebacterium equi, Neisseria perflava, and Haemophilus parainfluenzae for 21 days. Stuart Medium Base with 0.4% agar was used as the control medium for this and the other experiments in the investigation. At the end of the holding period inoculated transport media were quantitatively assayed, and the control media were assayed immediately after inoculation. Three vials of each medium were inoculated with an organism, and each vial's medium was diluted and spread on duplicate plates. Assay media for this experiment included Brain Heart Infusion,(BHIA) Tryptic Soy Agar, and BHIA with 1% Isovitalex enrichment.
Gardner, R. L.↗
Release of Bacterial Spores from the Inner Walls of a Stainless Steel Cup Subjected to Thermal Stresses and Mechanical Shock
The release and fallout of particulates from surfaces afforded thermal or impact stress is of concern for control of contamination of Mars from planetary landing vehicles. A metal vessel contaminated by aerosols of spores was used as a model system and the fallout of spores as affected by various mechanisms was examined. Thermal stresses simulating those expected on the Mars lander dislodged approximately .01% of the aerosol deposited surface burden as did a landing shock of 8 to 10G deceleration. Spores imprinted by finger or swab contact yielded similar results. In all cases where repeated cycling of temperature, motion, or shock were employed the majority of fallout occurred in the first cycle. Particles released from the surface were predominantly in the size range 1 to 5 microns.
Wolochow, H.↗