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Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages :
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First multi-year cumulation covers six years: 1965-70.
Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages :
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Book Description
First multi-year cumulation covers six years: 1965-70.
Author: Thomas Szabo
Publisher: Springer-Verlag
ISBN: 366302959X
Category : Science
Languages : de
Pages : 95
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As far as is known today, only fish, in the entire animal kingdom, possess special organs which produce an electric field. For several dozens of years now, many scientists have been interested in the biological significance of th is electric field. Particularly important was Lissrnann's discovery of the fact that the socalIed "weakly" electric fish, the discharges of which are not sensitive to man and were therefore unknown until now, use the electric field to locate objects in their environment. Many questions arose which had their origins in this discovery. What are the biological basis for a sensory system which allows for such a particular perception? It will be shown by morphological and physiological experiments that the aforementioned elec tro-sensory system works by autostimulation of the fish and that the rhythm of the pacemaker of the biological generator (the electric organ) is influenced by distortions which occur in the electric field. The biological significance of the electric organ discharges as signal for communication between specimens wiU also be discussed. Résumé D'après nos connaissances actuelles, certains poissons possèdent seuls de tout Ie règne anima I des organes spéciaux qui créent un champ électrique rythmique dans Ie milieu aqueux environnant. Depuis plusieurs années, de nombreux biologistes s'attachent à rechercher la signification biologiquc de ce champ.
Author: Victor P. Bond
Publisher: Springer Science & Business Media
ISBN:
Category : Science
Languages : en
Pages : 66
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Book Description
The American experience with respect to electrical power production has undergone and is undergoing considerable evolution. Early, frequently strident debates tended to focus on the risks and benefits of only one pos sible power source (nuclear), and on one possible hazard (radiation from routine releases). Discussions and analyses now have tended to become more moderate, and deal with not only one but all feasible power sources, as well as the costs and benefits associated with fuel production, the operation of such sources, fuel transportation and waste disposal. Radiation from routine releases is no longer a major issue. A number of attempts have been made to assess the total benefits and risks of nuclear versus fossil fuel plants, in order to allow a rational basis for deciding on what type of source is best for a given situation. More data and more refined analyses are needed; how ever, most of those completed to date have concluded that the overall cost in terms of possible damage to health and the environment is least for nuclear power, next for oil and the greatest for coal-fired plants.
Author: Library of Congress
Publisher:
ISBN:
Category : Subject catalogs
Languages : en
Pages : 1030
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Beginning with 1953, entries for Motion pictures and filmstrips, Music and phonorecords form separate parts of the Library of Congress catalogue. Entries for Maps and atlases were issued separately 1953-1955.
Author:
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ISBN:
Category : Union catalogs
Languages : en
Pages : 744
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Author:
Publisher:
ISBN:
Category : Union catalogs
Languages : en
Pages : 744
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Author:
Publisher:
ISBN:
Category : American literature
Languages : en
Pages : 744
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Author: Library of Congress
Publisher:
ISBN:
Category :
Languages : en
Pages : 656
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