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  • PROPULSION SYSTEMS  (2)
  • EARTH RESOURCES AND REMOTE SENSING  (1)
  • Phototransduction  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Light-mediated cyclic GMP hydrolysis controls important aspects of kinetics of retinal rod voltage response (1983)
    Springer
    European biophysics journal 9 (1983), S. 269-276 
    Details
    ISSN: 1432-1017
    Keywords: Phototransduction ; Cyclic GMP ; Rods ; Response kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract Pulsatile injections of cyclic GMP into rod outer segments of the isolated toad retina cause transient depolarizations that are reduced in amplitude in proportion with the receptor potential by low Na+ Ringer's. This reduction in the amplitude of the cyclic GMP depolarization may be due to the direct effect of external Na+ concentration on dark current and an indirect effect resulting from the inactivation of a sodium-calcium exchange mechanism raising the intracellular Ca2+ concentration. By comparison the reduction in cyclic GMP response amplitude effected by illumination is accompanied by faster kinetics. This difference suggests that the reduced amplitude and speedier response reflect a light induced increase in phosphodiesterase (PDE) activity rather than the effects of Ca2+. Large doses of cyclic GMP can distort the kinetics of both the light response and the recovery from a depolarization caused by a pulse of cyclic GMP by similarly slowing both types of responses. This similarity in the kinetics of the cyclic GMP response and the initial hyperpolarizing phase of the receptor potential suggests that the kinetics of the initial phase of the receptor potential are controlled by light-mediated cyclic GMP hydrolysis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00535662
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Unknown
    A seismic signal processor suitable for use with the NOAA/GOES satellite data collection system (1981)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Because of the high data-rate requirements, a practical system capable of collecting seismic information in the field and relaying it, via satellite, to a central collection point is not yet available. A seismic signal processor has been developed and tested for use with the NOAA/GOES satellite data collection system. Performance tests on recorded, as well as real time, short period signals indicate that the event recognition technique used is nearly perfect in its rejection of environmental noise and other non-seismic signals and that, with the use of solid state buffer memories, data can be acquired in many swarm situations. The design of a complete field data collection platform is discussed based on the prototype evaluation.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: IEEE Transactions on Geoscience and Remote Sensing; GE-19; Apr. 198
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    A review of contemporary solid rocket motor performance prediction techniques (1970)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Solid rocket motor performance prediction including motor pressure, thrust and propellant parameters, discussing mathematical modeling of flow fields
    Keywords: PROPULSION SYSTEMS
    Type: AIAA PAPER 69-732 , AMERICAN INST. OF AERONAUTICS AND ASTRONAUTICS, PROPULSION JOINT SPECIALIST CONFERENCE, 5TH, U.S. AIR FORCE ACADEMY; Jun 09, 1969 - Jun 13, 1969; COLORADO SPRINGS, CO|; ADEMIE DES SCIENCES
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Contemporary solid rocket motor performance prediction techniques. (1969)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Solid rocket motor performance prediction including motor pressure, thrust and propellant parameters, discussing mathematical modeling of flow fields
    Keywords: PROPULSION SYSTEMS
    Type: AIAA PAPER 69-732 , AMERICAN INST. OF AERONAUTICS AND ASTRONAUTICS, PROPULSION JOINT SPECIALIST CONFERENCE; Jun 09, 1969 - Jun 13, 1969; COLORADO SPRINGS, COLO.
    Format: text
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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