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  • Other Sources  (23)
  • Springer  (16)
  • American Institute of Physics
  • Wiley-Blackwell
  • 1975-1979  (23)
  • 1
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    The Marquardt-Levenberg algorithm: implementation and theory (1977)
    Springer
    In:  Bull., Polar Proj. OP-O3A4, Numerical Analysis, New York, Springer, vol. 3, no. Subvol. b, pp. 105-116, (ISBN 0080419208)
    Details
    Publication Date: 1977
    Keywords: Inversion
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Physik (1977)
    Springer
    In:  Berlin, Springer, vol. 10, no. Subvol. b, pp. 220, (ISBN: 0-08-037951-6)
    Details
    Publication Date: 1977
    Keywords: Textbook of physics
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Experimental Rock Deformation - The Brittle Field (1978)
    Springer
    In:  Berlin, 254 pp., Springer, vol. 15, no. Publ. No. 12, pp. 585, (ISBN 1-85233-708-7)
    Details
    Publication Date: 1978
    Keywords: Laboratory measurements ; Rock mechanics ; Textbook of geophysics
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Stress and Strain - Basic Concepts of Continuum Mechanics for Geologists (1976)
    Springer
    In:  New York, Springer, vol. 1, no. 1, pp. 65-66, (ISBN 0 340 76405 8)
    Details
    Publication Date: 1976
    Keywords: Stress ; Textbook of geophysics ; Textbook of geology ; Elasticity
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Natural Products from Porifera (1976)
    Springer
    In:  Fortschritte der Chemie Organischer Naturstoffe, 33 (1). pp. 1-72.
    Details
    Publication Date: 2017-10-11
    Description: Since organic chemistry began, the chemistry of natural products from terrestrial organisms such as plants and fungi has been studied intensively; in contrast, marine species have received relatively little attention. However, in the last decade research in the field of marine products has increased sbstantially. The heightened interest in this area is attested by the appearance of the monumental treatise of Halstead on Poisonous and Venomous Marine Animals in 1965 (108), Baslow’s review on “Marine Pharmacology” in 1969 (14) and Scheuer’s recent book “Chemistry of Marine Natural Products” (160) in 1973. In addition Premuzic’s review devoted to the Chemistry of Natural Products Derived from Marine Sources, was published in volume 29 of this series in 1971 (152).
    Type: Article , PeerReviewed
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  • 6
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    Evidence for exploitative interspecific competition in mud snails (Hydrobiidae) (1976)
    Wiley-Blackwell
    In:  Oikos, 27 (3). pp. 367-376.
    Details
    Publication Date: 2017-03-31
    Description: Some of the basic assumptions implied in the theory of limiting similarity of coexisting competitors were investigated experimentally in the case of three congeneric, deposit feeding snails. The species show character displacement with respect to size when coexisting. In experimental containers with a natural substrate, interspecific, exploitative competition between snails of the same size range is as intense as intraspecific competition. Diatoms of a given size range, which constitute the most important food, show a "logistic" growth response to grazing, and individual growth of the snails is linearly related to diatom density. The previous observation that the snails show size dependent selection for ingested particle sizes is extended to show that this mechanism leads to a real resource partitioning between snails of different sizes. Size frequency distribution of diatoms in the sediment is a function of the sizes of grazing snails. Size selection of ingested sand grains may also be significant for resource partitioning since the migration rate of the attached microflora between sand grains seems to be slow relative to its growth on the individual sand grains.
    Type: Article , PeerReviewed
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  • 7
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    The cells that secrete the beaks in octopods and squids (Mollusca, Cephalopoda) (1976)
    Springer
    In:  Cell and Tissue Research, 167 (2). pp. 229-241.
    Details
    Publication Date: 2020-07-24
    Description: A single layer of cells secretes the hard cephalopod beaks. The beccublasts are tall columnar cells that separate the beak from the surrounding buccal muscles, and must serve to attach these muscles to the beak. Within the cell layer there are three types of cells. The first, and most frequently found contain cell-long fibrils. These fibrils may have contractile and tensile properties. Complex trabeculae extend from the beccublasts into the matrix of the beak. The fibrils are attached to these trabeculae and at the other end of the cells they are anchored near to the beccublast-muscle cell interface, closely associated with the muscles that move the beak. The second group of cells contain masses of endoplasmic reticulum the cysternae of which are arranged along the long axis of the cell. These cells also contain dense granules and are probably the major source of beak hard tissue. It is probable that each cell secretes its own column of beak hard tissue. The third group of cells contains a mixture of fibrils and secretory tissue. In the beccublast layer there are changes in the proportion of the three types of cells depending upon the region sampled. In the region where growth is most active there are mostly secretory cells, whereas near the biting and wearing tip there are mainly anchoring type cells.
    Type: Article , PeerReviewed
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  • 8
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    Cobalt Distribution and the Pyrite-Chalcopyrite Geothermometer (1978)
    Springer
    In:  Geochemistry International . pp. 44-48.
    Details
    Publication Date: 2018-01-17
    Description: Laboratory data are presented on the distribution of cobalt between pyrite, chalcopyrite, and pyrrhotite. Pyrite-type deposits are used to show that the results enable one to estimate the temperatures of formation for copper mineralization. Recent years have seen extensive studies on element distributions between coexisting minerals in order to define mineralogical thermometers and barometers [1-3]. Detailed studies have been made of the thermodynamic basis of such distributions, as well as of the factors that influence component levels in coexisting minerals. Here we will not consider a theoretical analysis of the distribution, but we do note that trace elements appear in pyrite and chalcopyrite only below the 1 wt. % level, while the compositions of the minerals deviate only slightly from stoichiometric, with temperature the main parameter that controls the distribution.
    Type: Article , PeerReviewed
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  • 9
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    Speed of sound in water: A simple equation for realistic parameters (1975)
    American Institute of Physics
    In:  The Journal of the Acoustical Society of America, 58 (6). pp. 1318-1319.
    Details
    Publication Date: 2020-05-11
    Description: A simple equation is presented for the dependence of sound speed on temperature, salinity, and depth of water. The comparison with Del Grosso’s NRL II shows discrepancies of the order of tenths of m/sec for realistic values of the parameters.
    Type: Article , PeerReviewed
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  • 10
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    Vp/Vs and Poisson’s ratios in marine sediments and rocks (1979)
    American Institute of Physics
    In:  Journal of the Acoustical Society of America, 66 (4). pp. 1093-1101.
    Details
    Publication Date: 2020-07-16
    Description: The ratio of compressional wavevelocityV p to shear wavevelocityV s , and Poisson’s ratio in marine sediments and rocks are important in modeling the sea floor for underwater acoustics,geophysics, and foundation engineering. V p and V s versus depth information was linked at common depths in terrigenous sediments (to 1000 m) and in sands (to 20 m) to yield data on V p vs V s , and V p /V s and Poisson’s ratios versus depth. Soft, terrigenous sediments usually grade with depth into mudstones and shales; V p /V s ratios vary from about 13 or more at the sea floor to about 2.6 at 1000 m. Poisson’s ratios vary from above 0.49 at the sea floor to about 0.41 at 1000 m. In sands, V p , V s , and V p /V s have very high gradients in the first few meters; below about 5 m, V p /V s ratios decrease from about 9 to about 6 at 20 m; Poisson’s ratios vary from above 0.49 at the surface to above 0.48 at 20 m. The mean value of V p /V s in 30 laboratory samples of chalk and limestone is 1.90 (standard error: 0.03); mean Poisson’s ratio is 0.31. Literature data on basalts from the sea floor are reviewed. Equations relating V p to V s are given for terrigenous sediments, sands, and basalts.
    Type: Article , PeerReviewed
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