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  • Electronic Resource  (14)
  • 1960-1964  (14)
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  • Electronic Resource  (14)
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  • 11
    Electronic Resource
    Electronic Resource
    Complex Organic Micro-Structures in the Mokoia Meteorite (1962)
    [s.l.] : Nature Publishing Group
    Nature 193 (1962), S. 1126-1127 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE Mokoia meteorite is a carbonaceous ehon-drite1. It is a heterogeneous structure, fragments containing 0-5-2-1 per cent by weight of carbon. This carbon is present as a mixture of water-soluble and organic solvent-soluble organic compounds2. There are three possible hypotheses for the origin of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/1931126a0
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    Paper (German National Licenses)
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  • 12
    Electronic Resource
    Electronic Resource
    Organic constituents of the carbonaceous chondrites (1963)
    Springer
    Space science reviews 1 (1963), S. 647-682 
    Details
    ISSN: 1572-9672
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract From a brief discussion of forms of meteorite carbon it is concluded that almost all the carbon in the carbonaceous chondrites is present as organic matter. Attempts to extract and identify this organic matter are then reviewed. It is shown that only 25 per cent has been extracted and only about 5 per cent chemically characterized. Of this 5 per cent most is a complex mixture of hydroxylated aromatic acids together with various hydrocarbons of the paraffin, naphthene and aromatic series. Small amounts of amino acids, sugars and fatty acids also are present. The possible chemical nature of the major fraction is discussed. It is suggested to be a mixture of high-molecular weight aromatic and hydrocarbon polymers. Possible sources of contamination of the meteorites are described and evidence indicating a general lack of organic contaminants is presented. It is concluded that most of the organic constituents are indigenous to the meteorites and are extra terrestial in origin. Synthetic processes for the compounds are mentioned and it is concluded that the organic material is probably of abiogenic origin. A brief review on studies of “organized elements” contained within the meteorites is presented. Difficulties of identification are discussed and photographs of some micro-structures of several carbonaceous chondrites are presented. No final conclusion about the nature of these objects is possible, but some appear to be various indigenous organic and mineral structures, while others are terrestrial contaminants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00212447
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    Paper (German National Licenses)
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  • 13
    Electronic Resource
    Electronic Resource
    Visual Pigment of Grapsoid Crabs (1961)
    [s.l.] : Nature Publishing Group
    Nature 190 (1961), S. 784-786 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] WIThIN the past few years a number of research VV workers have isolated visual pigments from a variety of arthropods. Kampa1 has extracted a pigment from the eyes of a euphausiid crustacean, Euphausia pacifica, while Fisher and Goldie2 have prepared a similar photosensitive substance from the eyes ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/190784a0
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    Paper (German National Licenses)
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  • 14
    Electronic Resource
    Electronic Resource
    Some steps in the degradation of naphthalene acetic acid (1963)
    Springer
    Plant and soil 18 (1963), S. 338-345 
    Details
    ISSN: 1573-5036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A pseudomonad capable of using napthalene acetic acid as sole carbon source was isolated from soil. The route of decomposition proceeded through α-naphthol, salicyclic acid, and catechol. Similarities of this route to that for the breakdown of indole acetic acid are indicated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01347233
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    Paper (German National Licenses)
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