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  • Weitere Quellen  (12)
  • Taylor & Francis  (9)
  • Akademie-Verlag
  • American Meteorological Society
  • Springer Nature
  • 1975-1979  (7)
  • 1960-1964  (5)
  • 1
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    Methoden zur Herdtiefenbestimmung in der Makroseismik (1960)
    Akademie-Verlag
    In:  Freiberger Forschungshefte, Berlin, 120 pp., Akademie-Verlag, vol. C 88, no. 1, pp. 403-419, pp. 1051, (ISSN: 1340-4202)
    Details
    Publikationsdatum: 1960
    Schlagwort(e): Seismology ; Hypocenter determination ; Earthquake hazard ; Review article
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    BIBLIOGRAFIE SEISMOLOGIE
  • 2
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    Geophysikalische Bohrlochmessungen (1962)
    Akademie-Verlag
    In:  Berlin, Akademie-Verlag, vol. 81A and 81B, no. 22, pp. 65-70, (1405101733, 336 p.)
    Details
    Publikationsdatum: 1962
    Schlagwort(e): Borehole geophys. ; Textbook of geophysics
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    BIBLIOGRAFIE SEISMOLOGIE
  • 3
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    Statistische Physik (1962)
    Akademie-Verlag
    In:  Berlin, Akademie-Verlag, vol. 34, no. 22, pp. 65-70, (ISBN 3-7643-0253-4)
    Details
    Publikationsdatum: 1962
    Schlagwort(e): Textbook of physics ; Statistical investigations
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    BIBLIOGRAFIE SEISMOLOGIE
  • 4
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    Comparison of prey of the black Procellaria petrels of New Zealand (1976)
    Taylor & Francis
    In:  New Zealand Journal of Marine and Freshwater Research , 10 (1). pp. 119-130.
    Details
    Publikationsdatum: 2020-06-22
    Beschreibung: Stomach contents of 68 black petrels, Procellaria parkinsoni, 12 Westland black petrels, P. westlandica, and 3 white‐chinned petrels, P. aequinoctialis, were compared. The main prey were Cephalopoda and fish, and these indicated predominantly nocturnal feeding with selection for bioluminescent forms. There is marked latitudinal variation in the Cephalopoda available to these petrels.
    Materialart: Article , PeerReviewed
    Format: text
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    ARTIKEL (OCEANREP)
  • 5
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    Poissons characoïdes de l'Amazonie péruvienne (1964)
    Taylor & Francis
    In:  Beitrage zur Neotropischen Fauna, 4 (1). pp. 1-44.
    Details
    Publikationsdatum: 2017-09-07
    Beschreibung: Description of 64 species of fresh‐water Fishes of the suborder Characoidei (Cypriniformes), collected by Dr. K. H. Lüling during his 1959/60 Expedition in lower Ucayali and Iquitos regions. New forms for science (about 10 per cent of the collected species) are: a new genus, Oxybrycon, which seems to be close to Leptobrycon and Macropsobrycon; a Hemigrammus‐species and 2 Hyphessobrycon‐species; a Cheirodon (the genus was not signaled from Peruvian Amazon); and a Serrasalmus. Besides, 10 species seem to be new for the concerned territory, whereas 2 other forms have been described in former papers (see References). Some identification‐Keys are given, concerning Amazonian Triportheus and Schizodon, as well as concerning one Curimatus‐group of species. Finally a list of the characoid Fishes, known to occur in the Iquitos surroundings and in the lower Ucayali, is given.
    Materialart: Article , PeerReviewed
    Format: text
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  • 6
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    Coordination in physonectid siphonophores (1978)
    Taylor & Francis
    In:  Marine Behaviour and Physiology, 5 (4). pp. 325-346.
    Details
    Publikationsdatum: 2018-05-22
    Beschreibung: Intracellular and extracellular recordings from the stem, gastrozooids, palpons, tentacles and nectophores of physonectid siphonophores are presented. The stem organization previously described for Nanomia applies with only minor differences to Forskalia and Agalma. The endodermal epithelium of the stem is shown to be the pathway for slow potentials. Pumping cycles and feeding activities are organized locally in gastrozooids and palpons. Protective retractions are coordinated, probably through a direct nervous link with the stem. This is also true of tentacles. The ectoderm of bracts is a conducting epithelium; excitation in it can induce nervous activity in the stem, but the mechanism is unknown. Impulse traffic between stem and zooids is erratic and breaks down rapidly with repeated stimulation. The motor centres of the nectophores are connected to the stem by a labile nervous link, but an alternative epithelial pathway exists.
    Materialart: Article , PeerReviewed
    Format: text
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  • 7
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    The peripheral fields of octopusstellar nerves (1979)
    Taylor & Francis
    In:  Marine Behaviour and Physiology, 6 (1). pp. 25-31.
    Details
    Publikationsdatum: 2020-07-14
    Beschreibung: Afferent activity in the stellar nerves of Octopus vulgaris has been recorded in response to a probe applying a mechanical stimulus of approximately 5 gm/mm2 to the inner surface of the mantle. Mechanical sensitivity is distributed throughout the mantle surface and there is a large degree of overlap between the peripheral fields of nearby stellar nerves but no overlap of either ventral or dorsal midline. The afferent activity probably results from stimulation of sensory receptors located in the mantle and skin, but antidromic discharge in motor fibres is also possible.
    Materialart: Article , PeerReviewed
    Format: text
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  • 8
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    Palaeogene ostracods from the continental shelf off Natal, South Africa (1976)
    Taylor & Francis
    In:  Transactions of the Royal Society of South Africa, 42 (1). pp. 35-79.
    Details
    Publikationsdatum: 2020-05-04
    Beschreibung: Fifty-two species of Ostracoda are distinguished in the Palaeogene succession of Soekor borehole Jc-1 on the continental shelf off Natal. Two species and one new genus are described, and the ostracod faunas can be grouped into four well-defined assemblages. Vertical variations in the make-up of the ostracod faunas, together with various parameters measured in the forminifera populations, are used to discriminate changes in the conditions of deposition and rates of sediment accumulation. These can be summarized: lower Palaeocene environments were hyposaline, restricted circulation, with rapid accumulation; upper Palaeocene through Eocene conditions were normal marine, alternating restricted and open water circulation, with rapid accumulation in the Palaeocene, and slower accumulation in the Eocene; Oligocene conditions were normal marine, with open water given way to restricted circulation, shallow water environments in the upper part. Sediment accumulation rates in the Oligocene vary rapidly, major changes in the composition of the ostracod populations are recognized as important local biostratigraphical events.
    Materialart: Article , PeerReviewed
    Format: text
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  • 9
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    The Wadi Natrun: Chemical composition and microbial mass developments in alkaline brines of Eutrophic Desert Lakes (1979)
    Taylor & Francis
    In:  Geomicrobiology Journal, 1 (3). pp. 219-234.
    Details
    Publikationsdatum: 2015-03-10
    Beschreibung: Six lakes of the Wadi Natrun, Egypt, were studied with respect to the chemical composition of their brines and the occurrence of microbial mass developments. All investigated lakes showed pH values of approximately 11 and a total salt content of generally more than 30%. The main components were sulfate, carbonate, chloride, sodium, and minor amounts of potassium. Only traces of magnesium and calcium were present, but unusually high concentrations of organic carbon compounds, nitrogen compounds, and phosphate were found. Mass developments of phototrophic sulfur bacteria, halobacteria, cyanobacteria, and green algae were observed. The functions of complete nitrogen and sulfur cycles in the alkaline brines are discussed. The properties of the lakes and their ecology are compared with data on the Dead Sea and Great Salt Lake, Utah.
    Materialart: Article , PeerReviewed
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  • 10
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    Microbiological fractionation of stable sulfur isotopes: A review and critique (1979)
    Taylor & Francis
    In:  Geomicrobiology Journal, 1 (3). pp. 249-293.
    Details
    Publikationsdatum: 2015-12-08
    Beschreibung: Microbiological transformations of sulfur compounds discriminate to various degrees between the stable sulfur isotopes 32S and 34S. Comparatively little is known on isotopic effects associated with sulfur‐oxidizing organisms, and the interpretation of results is complicated since the sulfur pathways are poorly defined and compounds containing two or more sulfur atoms at different oxidation states may be involved. Dissimilatory reduction of sulfate, and sulfite reduction by certain assimilatory microorganisms, causes particularly marked isotopic effects, the expression of which depends on the extent of reaction and other incompletely defined environmental conditions. Models have been proposed to account for these effects based on current knowledge of the reduction pathways. Many of the trends observed during dissimilatory sulfate reduction in the laboratory can also be found in the modern environment leaving little doubt that microbiological factors play a significant role in determining sulfur isotope distributions in nature. However, unusually large isotopic effects, rarely approached in the laboratory, are often observed in nature. The reasons for this are not entirely clear, but in sediments it is possible that diffusional isotopic effects are imposed on biological effects.
    Materialart: Article , PeerReviewed
    Format: text
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