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  • EARTH RESOURCES AND REMOTE SENSING  (371)
  • GEOPHYSICS  (220)
  • ENERGY PRODUCTION AND CONVERSION  (101)
  • Biochemistry and Biotechnology
  • 1995-1999
  • 1980-1984
  • 1975-1979  (743)
  • 1965-1969
  • 1976  (332)
  • 1975  (411)
Collection
Keywords
Publisher
Years
  • 1995-1999
  • 1980-1984
  • 1975-1979  (743)
  • 1965-1969
Year
  • 1
    Electronic Resource
    Electronic Resource
    The preparation and properties of hornblende as a support for immobilized invertase (1975)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 17 (1975), S. 1679-1693 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The suitability of hornblende as a support for immobilized β-fructofuranosidase (invertase) was studied, with regard to the physical stability of the support and the thermal and operational stability of the immobilized enzyme. Hornblende was more stable than Enzacryl-Alo or Enzacryl-TIO, and marginally more stable than porous glass. Invertase immobilized on hornblende was more stable during long-term operation than invertase immobilized on porous glass. An active preparation of immobilized invertase was obtained also on pyroxene particles.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260171110
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Applied Remote Sensing Program (ARSP) (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The activities and accomplishments of the Applied Remote Sensing Program during FY 1975-1976 are reported. The principal objective of the Applied Remote Sensing Program continues to be designed projects having specific decision-making impacts as a principal goal. These projects are carried out in cooperation and collaboration with local, state and federal agencies whose responsibilities lie with planning, zoning and environmental monitoring and/or assessment in the application of remote sensing techniques. The end result of the projects is the use by the involved agencies of remote sensing techniques in problem solving.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CR-148324 , OALS-BULL-13
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Geologic and mineral and water resources investigations in western Colorado, using Skylab EREP data (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The author has identified the following significant results. Skylab photographs are superior to ERTS images for photogeologic interpretation, primarily because of improved resolution. Lithologic contacts can be detected consistently better on Skylab S190A photos than on ERTS images. Color photos are best; red and green band photos are somewhat better than color-infrared photos; infrared band photos are worst. All major geologic structures can be recognized on Skylab imagery. Large folds, even those with very gentle flexures, can be mapped accurately and with confidence. Bedding attitudes of only a few degrees are recognized; vertical exaggeration factor is about 2.5X. Mineral deposits in central Colorado may be indicated on Skylab photos by lineaments and color anomalies, but positive identification of these features is not possible. S190A stereo color photography is adequate for defining drainage divides that in turn define the boundaries and distribution of ground water recharge and discharge areas within a basin.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E76-10383 , NASA-CR-144513 , REPT-75-7
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Agricultural inventory capabilities of machine processed LANDSAT digital data (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Agricultural crop identification and acreage determination analysis of LANDSAT digital data was performed for two study areas. A multispectral image processing and analysis system was utilized to perform the manmachine interactive analysis. The developed techniques yielded crop acreage estimate results with accuracy greater than 90% and as high as 99%. These results are encouraging evidence of agricultural inventory capabilities of machine processed LANDSAT digital data.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: A-16 , NASA. Lyndon B. Johnson Space Center. NASA Earth Resources Survey Symp. Vol. 1-A: Agr., Environment; p 221-232
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 5
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    Periodic variations in stratospheric meridional wind from 20 to 65 km - 80 N to 70 S (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Long-term periodic features in the meridional wind between 20 and 65 km attitude are analyzed. No appreciable periodic waves are found in the tropics. The quasi-biennial oscillation, annual wave, and four-month wave have maximum amplitudes of about 10, 20, and 10 m/s respectively in the arctic near 45 km. The phase of the annual wave changes by nearly 180 deg in a narrow zone near 45 deg N. The semiannual wave has an amplitude of 10 m/s near 50 deg N above 50 km with equinoctial phase dates in the region of maximum amplitude. The location of this polar semiannual wave corresponds closely to that previously found in the zonal wind.
    Keywords: GEOPHYSICS
    Type: Royal Meteorological Society; vol. 101
    Format: text
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    NASA TECHNICAL REPORTS
  • 6
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    Atmospheric ozone measurements made from B-747 airliners - Spring 1975 (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Atmospheric ozone in the upper troposphere and lower stratosphere north of the equator has been registered aboard two commercial B-747 airliners during the Spring of 1975. This monitoring is part of a much broader and continuing project developed by NASA and known as the Global Atmospheric Sampling Program (GASP). Additional flight and meteorological conditions have also been automatically recorded on board concurrent with the ozone measurements. Independently-derived tropopause pressure information was available from NMC data archives and was used to identify stratospheric and tropospheric flight. The composite ozone, flight and meteorological data are reported for selected dates in March, April, and May. Attention is drawn particularly to the vertical profiles of atmospheric ozone mixing ratio as a function of both distance from the tropopause and curvature of the streamlines. The GASP observations suggest that ozone levels typical of the lower stratosphere are often embedded in the upper troposphere, principally during occasions when cyclonic wind curvature was noted.
    Keywords: GEOPHYSICS
    Type: Joint Symposium on Atmospheric Ozone; Aug 09, 1976 - Aug 17, 1976; Dresden; Germany
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Atmospheric ozone measurements made from B-747 AIRLINERS: Spring 1975 (1976)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Atmospheric ozone in the upper troposphere and lower stratosphere north of the equator has been registered aboard two commercial B-747 airliners. The composite ozone, flight and meteorological data are reported. Attention is drawn particularly to the vertical profiles of atmospheric ozone mixing ratio as a function of both distance from the tropopause and curvature of the streamlines. The GASP observations suggest that ozone levels typical of the lower stratosphere are often embedded in the upper troposphere, principally during occassions when cyclonic wind curvature was noted.
    Keywords: GEOPHYSICS
    Type: NASA-TM-X-73675 , Joint Symp. on Atmospheric Ozone; Aug 09, 1976 - Aug 17, 1976; Dresden
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Remote sensing of San Pablo Bay and Santa Barbara channel islands (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E75-10412 , NASA-CR-143405
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 9
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    California Coast Nearshore Processes Study Using ERTS-B Data (1975)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: There are no author-identified significant results in this report.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E76-10113 , NASA-CR-146046
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Dip coating process: Silicon sheet growth development for the large-area silicon sheet task of the low-cost silicon solar array project (1976)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The technical and economic feasibility of producing solar cell quality sheet silicon by dip-coating one surface of carbonized ceramic substrates with a thin layer of large grain polycrystalline silicon was investigated. The dip-coating methods studied were directed toward a minimum cost process with the ultimate objective of producing solar cells with a conversion efficiency of 10% or greater. The technique shows excellent promise for low cost, labor-saving, scale-up potentialities and would provide an end product of sheet silicon with a rigid and strong supportive backing. An experimental dip-coating facility was designed and constructed, several substrates were successfully dip-coated with areas as large as 25 sq cm and thicknesses of 12 micron to 250 micron. There appears to be no serious limitation on the area of a substrate that could be coated. Of the various substrate materials dip-coated, mullite appears to best satisfy the requirement of the program. An inexpensive process was developed for producing mullite in the desired geometry.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-CR-149242 , ERDA/JPL-954356-76/2 , AR-1
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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