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  • GEOPHYSICS  (8)
  • EARTH RESOURCES AND REMOTE SENSING  (3)
  • β-Oxidation  (3)
  • 1
    Electronic Resource
    Electronic Resource
    The two β-oxidation sites in pea cotyledons (1986)
    Springer
    Planta 168 (1986), S. 261-266 
    Details
    ISSN: 1432-2048
    Keywords: Carnitine palmitoyltransferase (location, function) ; Cotyledon (β-oxidation) ; Microbody ; Mitochondrion ; β-Oxidation ; Pisum (β-oxidation)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two sites for β-oxidation of fatty acids in pea (Pisum sativum L.) cotyledons exist. One site is the microbody, the other the mitochondrion. Mitochondrial β-oxidation of fatty acids is carnitine-dependent. The fatty acid permeates the membrane as palmitoylcarnitine which is formed from cytosolic-side palmitoyl-CoA by a carnitine palmitoyltransferase located on the exterior face of the inner mitochondrial membrane as a peripheral protein. A single-gated pore integral membrane translocator is proposed to exchange the palmitoylcarnitine for carnitine or acetylcarnitine across the membrane. An internal (matrix side) carnitine palmitoyltransferase then reforms palmitoyl-CoA which enters β-oxidation and subsequently the tricarboxylic-acid cycle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00402972
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    β-Oxidation enzymes in the mitochondria of Arum and oilseed rape (1990)
    Springer
    Planta 182 (1990), S. 129-135 
    Details
    ISSN: 1432-2048
    Keywords: Arum ; Brassica (β-oxidation) ; β-Oxidation ; (enzyme location) ; Microbody ; Mitochondrion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract β-Oxidation enzymes were detected both in the mitochondria and microbodies of Arum maculatum L. spadices and Brassica napus L. seeds. It is apparent that the mitochondrial membrane barrier, which remains intact after sucrose-density-gradient centrifugation, prevents rapid access of acyl-GoA substrates to matrix βoxidation tes. Thus intact mitochondria showed little β-oxidation enzyme activity. Rupturing of the mitochondrial membrane allowed rapid access of acyl CoAs to matrix sites. Consequently, in ruptured mitochondria, high β-oxidation enzyme activities were measured.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239994
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Long-chain acyl CoA synthetase, carnitine and β-oxidation in the pea-seed mitochondrion (1988)
    Springer
    Planta 173 (1988), S. 263-266 
    Details
    ISSN: 1432-2048
    Keywords: Carnitine ; Carnitine palmitoyltrans-ferase ; Long-chain acylCoA synthetase ; Mitochondrion (outer membrane) ; Mitoplast ; β-Oxidation ; Palmitate ; PalmitoylCoA ; Pisum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Mitochondria from pea (Pisum sativum L.) seeds were separated into two fractions, mitoplasts (intact inner membrane) and the outer-membrane fraction. The mitoplasts only oxidised palmitate in the presence of carnitine and added outermembrane fraction. Mitoplasts were able to oxidise palmitoylCoA in the presence of carnitine and added outer-membrane fraction had no effect on this oxidation. It was concluded that a long-chain acylCoA synthetase (EC 6.2.1.3) was located on the outer membrane and that the activity of this enzyme in assays was more than sufficient to account for any observed rate of O2 uptake during palmitate oxidation by pea mitochondria. The location of carnitine long-chain acyltransferase (carnitine palmitoyl transferase EC 2.3.1.21) would appear to be the mitoplast i.e. the inner mitochondrial membrane, and confirms the previous work at Newcastle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00403019
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  • 4
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    On the geometric form of volcanoes - Comment (1982)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: The model of Lacey et al. (1981) accounting for the geometric regularity and approximate cone shape of volcanoes is discussed. It is pointed out that, contrary to the model, volcano eruptions do not occur randomly in elevation and azimuth, but are commonly restricted to summit vents and a few well defined flank zones, so that the form of a volcano is determined by its vent locations and styles of eruption. Other false predictions of the model include the constancy of lava volumes at all vent elevations, the increase in volcano radius as the square root of time, a critical height for volcano growth, the influence of planetary gravity on volcano height and the negligible influence of ash falls and flows and erosional deposition. It is noted that the model of Shteynberg and Solov'yev, in which cone shape is related to stresses due to increasing cone height, may provide a better understanding of volcano morphology.
    Keywords: GEOPHYSICS
    Type: Earth and Planetary Science Letters; 57; 2, Fe; Feb. 198
    Format: text
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  • 5
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    Volcanic contribution to crustal growth in the Central Andes: A new estimate and a discussion of uncertainties (1988)
    In:  CASI
    Details
    Publication Date: 2013-08-29
    Description: Volcanism above subduction zones is a major mechanism for crustal growth and compared to some other proposed processes calculation of growth rates is relatively easy given accurate volumes and ages of volcanic material. Francis and Rundie (1976) first used this approach in a small region of the Central Andes, and extrapolated their result to the entire Central Andean arc. The derived rate of 3 to 4.2 x 10 to the minus 6th cubic km yr/km of arc length is compared with an independent estimate based upon a reconnaissance census of all major volcanoes in the Central Andes.
    Keywords: GEOPHYSICS
    Type: Lunar and Planetary Inst., Workshop on the Growth of Continental Crust; p 169-171
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  • 6
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    Eruption forecast for Krafla caldera (1982)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: Based on measurements and timings of 19 previous activity cycles of the Krafla caldera in Iceland that were previously reported, patterns are noted that have apparently not been described before and that appear to offer additional predictive possibilities for the time, place, and extent of near-future events at Krafla. A plot of elapsed time for each deflation event in the current Krafla rifting episode taken from Bjornsson et al. (1977, 1979) suggests that the next event should occur before the end of May, 1982. Comparison of the sites of main fissuring suggests that the next event will be close to or within the caldera, and that an eruption is to be anticipated. The trend for erupted lava area indicates that the next eruption will be larger than its predecessors.
    Keywords: GEOPHYSICS
    Type: EOS; 63; May 18
    Format: text
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  • 7
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    Earth observations during Space Shuttle flight STS-26: Discovery's mission to earth - September 29-October 3, 1988 (1989)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: During the late September-early October, 1988 flight of the Space Shuttle Discovery, astronauts took 1505 photographs of earth using handheld cameras. The resulting pictures provide an overview, not available from any other source, of dynamic environmental phenomena on five continents. The Discovery photographs show that: (1) atmospheric clarity has improved in the Northern Hemisphere, (2) widespread burning of natural vegetation throughout the Southern Hemisphere continues to generate immense smoke palls and extensive sedimentation in rivers and estuaries, and (3) although the drought in Africa was partially relieved by heavy rains in autumn, 1988, Lakes Chad and Nasser are at the lowest levels ever seen from space.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Geocarto International (ISSN 1010-6049); 4; 55-63
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  • 8
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    Astronaut's guide to terrestrial impact craters (1988)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Impact cratering of the earth's surface is discussed and compared with lunar craters. The basic types found on earth are either simple craters or complex impact structures and basins. Meteorite fragments and shock metamorphism provide evidence of a crater's formation by meteorite impact. Known craters on earth are ordered by location and a few principal facts are given for each crater and the general terrain in which it is located. A satellite picture of each crater and maps identifying crater locations are provided.
    Keywords: GEOPHYSICS
    Type: NASA-TM-102902 , NAS 1.15:102902 , LPI-TRN-88-03
    Format: application/pdf
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  • 9
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    Searching for impact craters using space shuttle photography (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Description: Extrapolation of impact cratering rates derived from Canada and Europe suggests that in the cratonic regions of Australia, India, Africa, and Brazil, 14-15 impact craters 20 km diameter should have formed during the last 120 my, and survived erosional erasure. In fact, in these areas, only 2 craters are known that approximately qualify: (1) Gosses Bluff, 22 km, 130 + or - 6 my old, and; Strangways, 24 km and 150 + or - 70 my old. It is therefore likely that about a dozen relatively large and preserved impact craters await discovery in these less explored cratons. A larger number of younger and smaller craters must also exist. An informal search is reported for impact craters using photographs obtained by Shuttle astronauts. Photographs taken with the 250 mm lens on Hassalblad cameras have a resolution of 25 m and cover a nominal area of 50x60 sq km. A larger format Linhof camera with similar resolution but 4 times larger area was flown March 1984, and will fly again in the future. Shuttle imagery has numerous advantages in looking for impact craters and for other types of Earth observations.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Lunar and Planetary Institute The 47th Ann. Meteoritical Soc. Meeting; 1 p
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  • 10
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    Emitted short wavelength infrared radiation for detection and monitoring of volcanic activity (1988)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Thematic Mapper images from LANDSAT were used to monitor volcanoes. Achievements include: (1) the discovery of a magmatic precursor to the 16 Sept. 1986 eruption of Lascar, northern Chile, on images from Mar. and July 1985 and of continuing fumarolic activity after the eruption; (2) the detection of unreported major changes in the distribution of lava lakes on Erta'Ale, Ethiopia; and (3) the mapping of a halo of still-hot spatter surrounding a vent on Mount Erebus, Antarctica, on an image acquired 5 min after a minor eruption otherwise known only from seismic records. A spaceborne short wavelength infrared sensor for observing hot phenomena of volcanoes is proposed. A polar orbit is suggested.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: ESA, Proceedings of the 4th International Colloquium on Spectral Signatures in Remote Sensing; p 399-402
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