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  • GEOPHYSICS  (2)
  • Proton pump  (1)
  • 1985-1989
  • 1975-1979  (3)
  • 1976  (3)
Collection
Keywords
Publisher
Years
  • 1985-1989
  • 1975-1979  (3)
Year
  • 1
    Electronic Resource
    Electronic Resource
    The major growth current through lily pollen tubes enters as K+ and leaves as H+ (1976)
    Springer
    Planta 133 (1976), S. 1-7 
    Details
    ISSN: 1432-2048
    Keywords: Pollen tubes ; Growth current ; Potassium leak ; Proton pump ; Lilium
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Growing lily (Lilium longiflorum Thunb.) pollen always drive a current into their tubes and out of their grains. The only external ions needed for growth (and the growth current) are K+, H+, and Ca2+. Increases in K+ immediately stimulate the current; while decreases in K+ immediately inhibit it. Comparable changes in H+ have the opposite effect; while those in Ca2+ have very little effect. We infer that most of the steady growth current is carried in by a potassium leak and out by a proton pump; but other considerations indicate that a minor, but controlling, component of the inward current consists of calcium ions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00385998
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Unknown
    Applications of aerospace technology to petroleum exploration. Volume 1: Efforts and results (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The feasibility of applying aerospace techniques to help solve significant problems in petroleum exploration is studied. Through contacts with petroleum industry and petroleum service industry, important petroleum exploration problems were identified. For each problem, areas of aerospace technology that might aid in its solution were also identified where possible. Topics selected for investigation include: seismic reflection systems; down-hole acoustic techniques; identification of geological analogies; drilling methods; remote geological sensing; and sea floor imaging and mapping. Specific areas of aerospace technology are applied to 21 concepts formulated from the topics of concern.
    Keywords: GEOPHYSICS
    Type: NASA-CR-152694 , JPL-DOC-5040-32-VOL-1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Applications of aerospace technology to petroleum exploration. Volume 2: Appendices (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Participants in the investigation of problem areas in oil exploration are listed and the data acquisition methods used to determine categories to be studied are described. Specific aerospace techniques applicable to the tasks identified are explained and their costs evaluated.
    Keywords: GEOPHYSICS
    Type: NASA-CR-152693 , JPL-DOC-5040-32-VOL-2
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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