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  • 1985-1989  (6)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    The distribution of income in a despotic society (1987)
    Springer
    Public choice 54 (1987), S. 261-276 
    Details
    ISSN: 1573-7101
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Notes: Abstract A distribution of income between rulers and subjects can be derived as an equilibrium of violence, rather than from considerations of marginal products of owned factors of production. Society is organized in ranks, and the occupants of each rank are provided with incomes just sufficient that obedience is preferable to rebellion. To incorporate such considerations into a model, it is necessary to recognize phenomena that are normally excluded from economic analysis: combat, the mortality rate (from natural causes and from violence) as a component of the utility function, and a rudimentary technology of control.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00125649
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Translation models (1986)
    Springer
    Origins of life and evolution of the biospheres 16 (1986), S. 439-440 
    Details
    ISSN: 1573-0875
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02422121
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Translation models (1986)
    Springer
    Details
    Publication Date: 1986-09-01
    Print ISSN: 0169-6149
    Electronic ISSN: 1573-0875
    Topics: Biology , Geosciences
    Published by Springer
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    PAPER CURRENT
  • 4
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    Stereoselective aminoacylation of RNA (1986)
    In:  CASI
    Details
    Publication Date: 2006-02-14
    Description: Prebiotic chemistry is faced with a major problem: how could a controlled and selective reaction occur, when there is present in the same solution a large number of alternative possible coreactants? This problem is solved in the modern cell by the presence of enzymes, which are not only highly efficient and controllable catalysts, but which also can impose on their substrates a precise structural requirement. However, enzymes are the result of billions of years of evolution, and we cannot invoke them as prebiotic catalysts. One approach to solving this problem in the prebiotic context is to make use of template-directed reactions. These reactions increase the number of structural requirements that must be simultaneously present in a molecule for it to be able to react, and thereby increase the selectivity of the reaction. They also can give a large increase in the rate of a reaction, if the template constrains two potential coreactants to lie close together. A third benefit is that information that is present in the template molecule can be passed on to the product molecules. If the earliest organisms were based on proteins and nucleic acids, then the investigation of peptide synthesis on an oligonucleotide template is highly relevant to the study of the origin of life.
    Keywords: SPACE BIOLOGY
    Type: NASA, Washington Symposium on Chemical Evolution and the Origin and Evolution of Life; p 73
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Exobiology in Earth orbit: The results of science workshops held at NASA, Ames Research Center (1989)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: The Workshops on Exobiology in Earth Orbit were held to explore concepts for orbital experiments of exobiological interest and make recommendations on which classes of experiments should be carried out. Various observational and experimental opportunities in Earth orbit are described including those associated with the Space Shuttle laboratories, spacecraft deployed from the Space Shuttle and expendable launch vehicles, the Space Station, and lunar bases. Specific science issues and technology needs are summarized. Finally, a list of recommended experiments in the areas of observational exobiology, cosmic dust collection, and in situ experiments is presented.
    Keywords: SPACE BIOLOGY
    Type: NASA-SP-500 , NAS 1.21:500
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    The evolution of nucleotides (1986)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Examples of chiral selection in nonenzymatic aminoacylation of internal 2-prime hydroxyl groups of oligo- and polynucleotides are discussed as an evidence for the early evolution of bionucleotides. Some factors that could influence the degree of this chiral selection and its direction are discussed. These include the structure of the aminoacyl component, the structure of the nucleoside component, and the reaction conditions. Investigation of the mechanism of this reaction was aided by the use of 3-prime inosine methyl phosphate (as a simplified model for a dinucleoside monophosphate) and proton NMR spectroscopy of t-butoxycarbonyl-alanyl esters of nucleosides as models for the transition state of the aminoacylation reaction itself.
    Keywords: SPACE BIOLOGY
    Type: Advances in Space Research (ISSN 0273-1177); 6; 11 1
    Format: text
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    NASA TECHNICAL REPORTS
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