2,171 research outputs found
Techniques for the realization of ultrareliable spaceborne computers Interim scientific report
Reliability tests on spaceborne digital computer
STRAIN SPECIFICITY AND PRODUCTION OF ANTIBIOTIC SUBSTANCES. X. CHARACTERIZATION AND CLASSIFICATION OF SPECIES WITHIN THE STREPTOMYCES GRISEUS GROUP
On the oxidation of organic matter in marine sediments by bacteria
The question as to whether the organic matter in the sea bottom is inert or is available as a nutrient for the bottom fauna and bottom-inhabiting bacteria is a problem of special interest in the cycle of life in the sea. A number of marine animals, making up the benthos or the bottom fauna, must depend upon this organic matter for their nutrition while the sea bottom also harbors an extensive bacterial population which require the energy to be derived from various nutrient elements for cell synthesis and respiration
Classic Article: On the oxidation of organic matter in marine sediments by bacteria
The question as to whether the organic matter in the sea bottom is inert or is available as a nutrient for the bottom fauna and bottom-inhabiting bacteria is a problem of special interest in the cycle of life in the sea. A number of marine animals, making up the benthos or the bottom fauna, must depend upon this organic matter for their nutrition while the sea bottom also harbors an extensive bacterial population which require the energy to be derived from various nutrient elements for cell synthesis and respiration..
The effect of copper upon the development of bacteria in sea water and the isolation of specific bacteria
Copper is used extensively in the eradication of various types of disease-producing microorganisms, especially fungi, as well as other organisms which are a nuisance to water supplies, such as algae and certain animal forms. It is also known that traces of copper are essential for the growth of many of the lower forms of life. The extensive literature on the relation of copper to microbial development is largely limited to the above two phenomena. Comparatively little is known, however, of the effect of copper upon a mixed microbiological population consisting of many organisms with different metabolic processes. It is known, for example, that the growth of plants in certain soils, as peats, will respond markedly to the application of small amounts of copper (5). The development of fungi in copper-free media has been suggested as a means of determining the concentration of copper in a given soil; this method is based upon the response of A. niger to the presence of small amounts of available copper (3)
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