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  • 1
    Electronic Resource
    Electronic Resource
    A study of the subcellular localisation of an ethylene binding site in developing cotyledons of Phaseolus vulgaris L. by high resolution autoradiography (1982)
    Springer
    Planta 154 (1982), S. 48-52 
    Details
    ISSN: 1432-2048
    Keywords: Cotyledon ; Endoplasmic reticulum ; Ethylene binding site ; Phaseolus ; Protein body membrane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Use was made of light microscopy and high resolution electron microscope autoradiography to determine the subcellular localisation of a binding site with a high affinity and specificity for ethylene in developing cotyledons of Phaseolus vulgaris L. The results indicate that the binding site is located on the endoplasmic reticulum and protein body membranes, confirming previous studies using cellular fractionation and marker enzymes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00385495
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Studies on ethylene binding by cell-free preparations from cotyledons of Phaseolus vulgaris L. (1980)
    Springer
    Planta 148 (1980), S. 397-406 
    Details
    ISSN: 1432-2048
    Keywords: Ethylene binding ; Hormone binding ; Phaseolus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The preparation is described of a cell-free system from developing cotyledons of Phaseolus vulgaris cv. Canadian Wonder which is capable of binding ethylene. The binding is saturable and the apparent dissociation constant for ethylene is 6.4·10-10 M in solution. The binding site is associated with subcellular particles and treatment with Triton X-100 results in substantial solubilisation of the activity. The kinetics of association and dissociation of the ligand and the binding site are described. The system is heat labile and binding activity is diminished by treatment with some proteolytic enzymes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388129
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  • 3
    Electronic Resource
    Electronic Resource
    Studies on ethylene binding by cell free preparations from cotyledons of Phaseolus vulgaris L. (1980)
    Springer
    Planta 148 (1980), S. 407-411 
    Details
    ISSN: 1432-2048
    Keywords: Ethylene binding ; Hormone binding ; Phaseolus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Various protein reactive agents such as dithioerythritol, dithiothreitol, mercaptoethanol and p-chloromercuribenzoate inhibit binding of ethylene to cell free preparations of Phaseolus vulgaris L. The effect of the thiols is partially reversed by treatment with diamide; occupation of the binding site by ligand diminishes the inhibition caused by p-chloromercuribenzoate but not that caused by thiols. Growth regulators other than ethylene do not affect binding. Physiologically active structural analogues of ethylene competitively inhibit binding of the growth regulator and their relative effectiveness in the cell free system closely resembles that in developmental processes controlled ethylene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388130
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  • 4
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    Lunar atmospheric composition experiment (1973)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: On the Apollo 17 mission, a miniature mass spectrometer, called the lunar atmospheric composition experiment (LACE), was carried to the moon as part of the Apollo lunar surface experiments package (ALSEP) to study the composition of and variation in the lunar atmosphere. The instrument was successfully deployed in the Taurus-Littrow valley with its entrance aperture oriented upward to intercept and measure the downward flux of gases at the lunar surface. Initial activation of the LACE instrument occurred on December 27, 1972, approximately 50 hr after sunset, and operation continued throughout the first lunar night. Sunrise brought a high background gas level and necessitated discontinuing operation during lunar daytime except for a brief check near noon. Near sunset, operation was resumed and continued throughout the night. This sequence was repeated for the second and third lunations.
    Keywords: GEOPHYSICS
    Type: NASA. Johnson Space Center Apollo 17 Prelim. Sci. Rept.; 9 p
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  • 5
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    Magnetosphere-ionosphere interactions (1979)
    In:  CASI
    Details
    Publication Date: 2006-01-16
    Description: The present understanding of magnetosphere ionosphere interactions is described, and present and future predictive capabilities are assessed. Ionospheric features directly coupled to the magnetosphere to a significant degree are considered, with emphasis given to those phenomena of major interest to forecasters and users.
    Keywords: GEOPHYSICS
    Type: NASA. Marshall Space Flight Center Solar-Terrest. Predictions Proc., Vol. 2; p 476-493
    Format: text
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  • 6
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    Multipolarization radar images for geologic mapping and vegetation discrimination (1986)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: NASA has developed an airborne SAR that simultaneously yields image data in four linear polarizations in L-band with 10-m resolution over a swath of about 10 km. Signal data are recorded both optically and digitally and annotated in each of the channels to facilitate completely automated digital correlation. Comparison of the relative intensities of the different polarizations furnishes discriminatory mapping information. Local intensity variations in like-polarization images result from topographic effects, while strong cross polarization responses denote the effects of vegetation cover and, in some cases, possible scattering from the subsurface. In each of the areas studied, multiple polarization data led to the discrimination and mapping of unique surface unit features.
    Keywords: GEOPHYSICS
    Type: IEEE Transactions on Geoscience and Remote Sensing (ISSN 0196-2892); GE-24; 246-257
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  • 7
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    Low energy electron precipitation and the ionospheric F-region in and north of the auroral zone. (1972)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Use of low-elevation sounding rocket (Polar 1) in the exploration of the F region morphology in and north of the auroral zone over northern Norway. The rocket which moved over a horizontal distance of some 400 km inside the F region, monitored low-energy electron precipitation and various upper-atmosphere excitation and ionization processes. The latitudinal variations of the less than 1 keV energy electron fluxes showed excellent agreement with corresponding variations in the F-region electron density and the O I (6300 A) emission below the rocket, indicating that the low-energy electrons are the main sources for these phenomena at these high latitudes. An N2(+) (4278 A) arc was located near the decrease in the 40-keV electron fluxes. This arc was produced by a nearly monoenergetic influx of some 3-keV electrons. The expected luminosity profile derived from this energy spectrum differs significantly from the observed one, and possible explanations for the discrepancy are discussed.
    Keywords: GEOPHYSICS
    Type: Planetary and Space Science; 20; Feb. 197
    Format: text
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  • 8
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    Observations of a gradual transition between Ps 6 activity with auroral torches and surgelike pulsations during strong geomagnetic disturbances (1988)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: This paper describes a long-lasting large-amplitude pulsation event, which occurred on January 10, 1983 in the ionosphere and magnetosphere and was characterized by Steen and Rees (1983). Over the 4-h period (0200-0600 UT), the characteristics of the pulsations in the ionosphere changed from being Ps 6 auroral torches toward substorms and back to Ps 6. At GEO, the corresponding characteristics were a modulation of the high-energy particle intensity and plasma dropouts. Based on the ideas presented by Rostoker and Samson (1984), an interpretation of the event is offered, according to which the pulsations are caused by the Kelvin-Helmholtz instability during an interval of strong magnetospheric convection. On the basis of this explanation, a new interpretation of the substorm time sequence is proposed.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 93; 8713-873
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  • 9
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    Joule heating in the mesosphere and thermosphere during the July 13, 1982, solar proton event (1987)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The solar proton event of July 13, 1982 produced considerable ionization in the polar-cap mesosphere. Energetic solar proton fluxes were measured by the NOAA-6 satellite. The DE-2 satellite measured the low-energy electrons, the ion drift velocity, and other atmospheric and ionospheric properties during the event in the region of the measured maximum electric field (189 mV/m at 2215 UT near 60 deg N), a Joule heating rate of 1-3 K/day is calculated between 70 and 80 km, exceeding the heating due to ozone absorption at noon in the summer hemisphere in that altitude range. The Joule heating rate above 90 km greatly exceeded 20 K/day. The calculated height-integrated Joule heating rate above 100 km in the same region exceeded 400 ergs/sq cm sec, and DE-2 near 350 km measured neutral winds of nearly 1000 m/s and neutral gas temperatures of over 2000 K. The overall ionospheric structure calculated below the DE-2 satellite is described.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research (ISSN 0148-0227); 92; 6083-609
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  • 10
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    A 10-cps periodicity in the precipitation of auroral-zone electrons. (1967)
    In:  Other Sources
    Details
    Publication Date: 2011-08-11
    Description: Temporal periodicity of 10 cps observed in flux of auroral electrons by rocketborne radiation detectors
    Keywords: GEOPHYSICS
    Type: JOURNAL OF GEOPHYSICAL RESEARCH
    Format: text
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