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  • EARTH RESOURCES AND REMOTE SENSING  (132)
  • GEOPHYSICS  (123)
  • ENERGY PRODUCTION AND CONVERSION  (91)
  • Biochemistry and Biotechnology
  • 1995-1999
  • 1975-1979  (364)
  • 1965-1969
  • 1978  (364)
Collection
Keywords
Publisher
Years
  • 1995-1999
  • 1975-1979  (364)
  • 1965-1969
Year
  • 1
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    An independent evaluation by the plenary peer review team (1978)
    In:  Other Sources
    Details
    Publication Date: 2016-03-08
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Independent Peer Evaluation of the Large Area Crop Inventory Experiment (LACIE): The LACIE Symp.; p 1-8
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Remote sensing of strippable coal reserves and mine inventory in part of the Warrior Coal Field in Alabama (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Methods by which estimates of the remaining reserves of strippable coal in Alabama could be made were developed. Information acquired from NASA's Earth Resources Office was used to analyze and map existing surface mines in a four-quadrangle area in west central Alabama. Using this information and traditional methods for mapping coal reserves, an estimate of remaining strippable reserves was derived. Techniques for the computer analysis of remotely sensed data and other types of available coal data were developed to produce an estimate of strippable coal reserves for a second four-quadrangle area. Both areas lie in the Warrior coal field, the most prolific and active of Alabama's coal fields. They were chosen because of the amount and type of coal mining in the area, their location relative to urban areas, and the amount and availability of base data necessary for this type of study.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CR-150781
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Color enhancement of landsat agricultural imagery: JPL LACIE image processing support task (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Color enhancement techniques were applied to LACIE LANDSAT segments to determine if such enhancement can assist analysis in crop identification. The procedure involved increasing the color range by removing correlation between components. First, a principal component transformation was performed, followed by contrast enhancement to equalize component variances, followed by an inverse transformation to restore familiar color relationships. Filtering was applied to lower order components to reduce color speckle in the enhanced products. Use of single acquisition and multiple acquisition statistics to control the enhancement were compared, and the effects of normalization investigated. Evaluation is left to LACIE personnel.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CR-158516 , JPL-PUB-78-102
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Dual membrane hollow fiber fuel cell and method of operating same (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A gaseous fuel cell is described which includes a pair of electrodes formed by open-ended, ion-exchange hollow fibers, each having a layer of metal catalyst deposited on the inner surface and large surface area current collectors such as braided metal mesh in contact with the metal catalyst layer. A fuel cell results when the electrodes are immersed in electrolytes and electrically connected. As hydrogen and oxygen flow through the bore of the fibers, oxidation and reduction reactions develop an electrical potential. Since the hollow fiber configuration provides large electrode area per unit volume and intimate contact between fuel and oxidizer at the interface, and due to the low internal resistance of the electrolyte, high power densities can be obtained.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Application of Remote Sensing to the Chesapeake Bay Region. Volume 1: Executive summary (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The proceedings are presented of a conference, jointly sponsored by the National Aeronautics and Space Administration, the U.S. Environmental Protection Agency, and the University of Maryland. The purpose of the Conference was to assemble representatives of federal and state government agencies engaged in research on the condition and evolution of the Chesapeake Bay to compose a status report, to present current activities and future plans, and to recommend a long-range future course of policies and programs.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CP-006-PT-1 , G-7719-1 , Apr 12, 1977 - Apr 15, 1977; Berkeley Springs, WV; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Application of Remote Sensing to the Chesapeake Bay Region. Volume 2: Proceedings (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: A conference was held on the application of remote sensing to the Chesapeake Bay region. Copies of the papers, resource contributions, panel discussions, and reports of the working groups are presented.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CP-006-PT-2 , G-7719-2 , Apr 12, 1977 - Apr 15, 1977; Berkeley Springs, WV; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 7
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    An analysis of the first two years of GASP data (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Distributions of mean ozone levels from the first two years of data from the NASA Global Atmospheric Sampling Program (GASP) show spatial and temporal variations in agreement with previous measurements. The standard deviations of these distributions reflect the large natural variability of ozone levels in the altitude range of the GASP measurements. Monthly mean levels of ozone below the tropopause show an annual cycle with a spring maximum which is believed to result from transport from the stratosphere. Correlations of ozone with independent meteorological parameters, and meteorological parameters obtained by the GASP systems show that this transport occurs primarily through cyclogenesis at mid-latitudes. The GASP water vapor data, analyzed with respect to the location of the tropopause, correlates well with the simultaneously obtained ozone and cloud data.
    Keywords: GEOPHYSICS
    Type: In: Joint Conference on Sensing of Environmental Pollutants; Nov 06, 1977 - Nov 11, 1977; New Orleans, LA
    Format: text
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    NASA TECHNICAL REPORTS
  • 8
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    Detached auroral arcs in the trough region (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: In a previous paper, Moshupi et al. (1977) have reported on the occurrence of rare auroral 'patches' equatorward of the normally well-defined boundary of diffuse aurora. Some less spectacular but more common arclike features were observed in the same 'trough' region (between the plasmapause and the auroral oval) during the period 1972-1975. These 'detached' arcs show some similarities to stable auroral red arcs in terms of their location and occurrence, but are completely different spectroscopically in that the stable auroral red arcs produce almost pure atomic oxygen red line emissions, whereas the detached arcs are deficient in red line emission - a feature implying totally different production mechanisms. The characteristics of the detached lines are described, including their unusual local time/longitude dependence.
    Keywords: GEOPHYSICS
    Type: Journal of Geophysical Research; 83; June 1
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Multispectral scanner system parameter study and analysis software system description, volume 2 (1978)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The author has identified the following significant results. The integration of the available methods provided the analyst with the unified scanner analysis package (USAP), the flexibility and versatility of which was superior to many previous integrated techniques. The USAP consisted of three main subsystems; (1) a spatial path, (2) a spectral path, and (3) a set of analytic classification accuracy estimators which evaluated the system performance. The spatial path consisted of satellite and/or aircraft data, data correlation analyzer, scanner IFOV, and random noise model. The output of the spatial path was fed into the analytic classification and accuracy predictor. The spectral path consisted of laboratory and/or field spectral data, EXOSYS data retrieval, optimum spectral function calculation, data transformation, and statistics calculation. The output of the spectral path was fended into the stratified posterior performance estimator.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E79-10162 , NASA-CR-160113 , LARS-112678-VOL-2
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
    Electronic Resource
    Electronic Resource
    Investigation of the unit operations involved in the continuous flow isolation of β-galactosidase from Escherichia coli (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 20 (1978), S. 159-182 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A 1000 liter fermentor has been used to produce a continuous feed of Escherichia coli containing a high level of β-galactosidase. We have investigated the individual unit operations for the isolation of the enzyme: cell disruption, nucleic acid removal, protein precipitation, and solid-liquid separation after each stage. Using the information obtained we have been able to operate a semicontinuous process which when fully continuous would yield 100 g protein/hr, comprising 23% β-galactosidase.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260200202
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    Paper (German National Licenses)
    Fulltext
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