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  • 1
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1988-04-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barker, J L -- New York, N.Y. -- Science. 1988 Apr 22;240(4851):548-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17784074" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 1986-05-23
    Description: Two metabolites of the steroid hormones progesterone and deoxycorticosterone, 3 alpha-hydroxy-5 alpha-dihydroprogesterone and 3 alpha, 5 alpha-tetrahydrodeoxycorticosterone, are potent barbiturate-like ligands of the gamma-aminobutyric acid (GABA) receptor-chloride ion channel complex. At concentrations between 10(-7) and 10(-5)M both steroids inhibited binding of the convulsant t-butylbicyclophosphorothionate to the GABA-receptor complex and increased the binding of the benzodiazepine flunitrazepam; they also stimulated chloride uptake (as measured by uptake of 36Cl-) into isolated brain vesicles, and potentiated the inhibitory actions of GABA in cultured rat hippocampal and spinal cord neurons. These data may explain the ability of certain steroid hormones to rapidly alter neuronal excitability and may provide a mechanism for the anesthetic and hypnotic actions of naturally occurring and synthetic anesthetic steroids.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Majewska, M D -- Harrison, N L -- Schwartz, R D -- Barker, J L -- Paul, S M -- New York, N.Y. -- Science. 1986 May 23;232(4753):1004-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2422758" target="_blank"〉PubMed〈/a〉
    Keywords: 20-alpha-Dihydroprogesterone/*analogs & derivatives/metabolism/pharmacology ; Animals ; Bicyclo Compounds/metabolism ; *Bicyclo Compounds, Heterocyclic ; Binding, Competitive ; Brain/metabolism ; Cells, Cultured ; Chlorides/metabolism ; Desoxycorticosterone/*analogs & derivatives/metabolism/pharmacology ; Drug Synergism ; Flunitrazepam/metabolism ; Hippocampus/metabolism ; In Vitro Techniques ; Ion Channels/metabolism ; Progesterone/*analogs & derivatives/metabolism/pharmacology ; Rats ; Receptors, GABA-A/*drug effects/metabolism ; Spinal Cord/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2014-09-18
    Description: The initial characterization of the Thematic Mapper (TM) thermal band is reported including gain stability, gain relation to internal calibration, corrections for channel-to-channel and scan direction differences, an approximate comparison to ground truth, and a calculation of noise equivalent temperature difference. Updated calibration information is also presented.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: LANDSAT-4 Sci. Characterization Early Results, Vol. 3, Pt. 2; p 233-256
    Format: text
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  • 4
    Publication Date: 2011-08-19
    Description: Based on solar irradiance data published by Neckel and Labs (1984) and Iqbal (1983), the solar exoatmospheric irradiances for Thematic Mapper (TM) bands 1, 2, 3, and 4 have been calculated. Results vary by up to 1 percent from previous published values, which were based on the earlier data of Neckel and Labs. For TM bands 5 and 7, integrated solar exoatmospheric irradiances have also been recalculated using solar irradiance data published by Labs and Neckel (1968), Arvesen et al. (1969), and Iqbal (1983). These irradiances vary by up to 6 percent from previously published results, which were based on data published by Thekaekara (1972).
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: International Journal of Remote Sensing (ISSN 0143-1161); 8; 517-523
    Format: text
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  • 5
    Publication Date: 2011-08-19
    Description: Relative spectral response data for the Landsat-4 and Landsat-4 backup multispectral scanner subsystems (MSS), the protoflight and flight models, are presented and compared to similar data for the Landsat 1, 2 and 3 scanners. Channel (six channels per band) outputs for soil and soybean targets were simulated and compared within each band and between scanners.The principal differences between the spectral responses of the Landsat-4 scanners and previous scanners are discussed. The simulated Landsat-4 scanner outputs were 3 to 10 percent lower in the red band and 3 to 11 percent higher in the first near-IR band than previous scanners for the soybeans targets. The Landsat-4 scanners were generally more uniform from channel to channel within bands than previous scanners. In the upper-band edge of the red band of the protoflight scanner, one channel was markedly different (12 nm) from the rest. For a soybeans target, this nonuniformity resulted in a within-band difference of 6.2 percent in simulated outputs between channels.
    Keywords: SPACECRAFT INSTRUMENTATION
    Type: International Journal of Remote Sensing (ISSN 0143-1161); 6; 697-716
    Format: text
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  • 6
    Publication Date: 2014-09-18
    Description: Results and recommendations pertaining to the characterization of the relative radiometric calibration of the protoflight thematic mapper (TM/PF) on the LANDSAT-4 satellite are presented. Some preliminary pre-launch and in-orbit results are also included from the flight model (TM/F) on LANDSAT-5. A common scientific methodology and terminology is outlined for characterizing the radiometry of both TM sensors. The magnitude of the most significant sources of radiometric variability are discussed and methods are recommended for achieving the exceptional potential inherent in the radiometric precision and accuracy of the sensors.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: LANDSAT-4 Sci. Characterization Early Results, Vol. 3, Pt. 2; p 1-219
    Format: text
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  • 7
    Publication Date: 2019-07-13
    Description: The excellent quality of TM data allows researchers to proceed directly with applications analyses, without spending a significant amount of time applying various corrections to the data. The early results derived of TM data are discussed for the following applications: agriculture, land cover/land use, soils, geology, hydrology, wetlands biomass, water quality, and snow.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E85-10070 , NASA-CP-2355-VOL-4 , REPT-85B0115-VOL-4 , NAS 1.55:2355-VOL-4 , 22-24 Feb. 1983; Greenbelt, MD; United States
    Format: application/pdf
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  • 8
    Publication Date: 2019-07-13
    Description: The calibration of the LANDSAT 4 thematic mapper is discussed as well as the atmospheric, radiometric, and geometric accuracy and correction of data obtained with this sensor. Methods are given for assessing TM band to band registration.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E85-10069 , NASA-CP-2355-VOL-3-PT-2 , REPT-85B0115-VOL-3-PT-2 , NAS 1.55:2355-VOL-3-PT-2 , 22-24 Feb. 1983; Greenbelt, MD; United States
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