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  • 1
    Electronic Resource
    Electronic Resource
    In vitro propagation of Pyrus pyrifolia
    Amsterdam : Elsevier
    Scientia Horticulturae 23 (1984), S. 247-254 
    Details
    ISSN: 0304-4238
    Keywords: Pyrus pyrifolia ; micropropagation ; phloroglucinol
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0304-4238(84)90068-2
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Regeneration and transformation of Eucalyptus camaldulensis (1997)
    Springer
    Plant cell reports 16 (1997), S. 787-791 
    Details
    ISSN: 1432-203X
    Keywords: Key words Eucalyptus ; Regeneration ; Transformation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Reliable regeneration protocols for Eucalyptus camaldulensis using leaf explants from in vitro-grown plants have been developed. Out of the 24 clones tested 13 were regenerated and of these, 6 showed regeneration from more than 60% of the explants. Identical protocols were also successful in the regeneration of some clones of E. microtheca, E. ochrophloia, E. grandis and E. marginata, but at lower frequencies. Co-cultivation of E. camaldulensis leaf explants with Agrobacterium tumefaciens strains carrying a kanamycin resistance gene and the reporter gene β-glucuronidase (GUS), followed by selection on kanamycin at 9 mg l–1, allowed the selection of transformed shoots that could be rooted on selective media. Transformation of the plants was verified by staining for the GUS enzyme in various plant tissues, NptII assays and by Southern blotting on isolated DNA using specific probes for both the GUS and selectable marker genes. Transformed tissue was obtained with 5 clones of E. camaldulensis tested and a number of A. tumefaciens strains. However, only 1 clone regenerated transformed whole plants reliably.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002990050321
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    Paper (German National Licenses)
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  • 3
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    Decomposition of AVIRIS spectra: extraction of surface-reflectance, atmospheric, and instrumental components (1996)
    Institute of Electrical and Electronics Engineers
    Details
    Publication Date: 1996-01-01
    Print ISSN: 0196-2892
    Electronic ISSN: 1558-0644
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Published by Institute of Electrical and Electronics Engineers
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  • 4
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    Velocities of Pine Island Glacier, West Antarctica, from ERS-1 SAR images (1995)
    Cambridge University Press
    Details
    Publication Date: 1995-01-01
    Description: Pine Island Glacier is one of the major ice streams draining West Antarctica. We calculated average velocities for both its grounded and floating parts by tracking crevasses and other patterns moving with the ice on two sequential images acquired in February and December 1992 by ERS-1 SAR (European Remote-Sensing Satellite, Synthetic Aperture Radar). Velocities in the fast-moving central parts of the glacier range from about 1.3 km a−1 on the grounded part to about 2.6 km a−1 on the floating part. Velocity increases rapidly just below the grounding line. For the floating part, velocities are approximately 0.3 km a−1 faster than previously established from Landsat images by other workers. This observation suggests that the discharge is larger and, therefore, the mass balance less positive than previously thought; however, our study also shows that current information is insufficient to allow for precise mass-balance calculations. Images of the glacier front show that a calving event released an iceberg about 5 km wide between February and December 1992. The position of the glacier front has not changed substantially between 1973 (Landsat image) and 1992 (ERS-1 images).
    Print ISSN: 0260-3055
    Electronic ISSN: 1727-5644
    Topics: Geography , Geosciences
    Published by Cambridge University Press on behalf of International Glaciological Society.
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  • 5
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    Velocities of Pine Island Glacier, West Antarctica, from ERS-1 SAR images (1995)
    Cambridge University Press
    Details
    Publication Date: 1995-01-01
    Description: Pine Island Glacier is one of the major ice streams draining West Antarctica. We calculated average velocities for both its grounded and floating parts by tracking crevasses and other patterns moving with the ice on two sequential images acquired in February and December 1992 by ERS-1 SAR (European Remote-Sensing Satellite, Synthetic Aperture Radar). Velocities in the fast-moving central parts of the glacier range from about 1.3 km a−1 on the grounded part to about 2.6 km a−1 on the floating part. Velocity increases rapidly just below the grounding line. For the floating part, velocities are approximately 0.3 km a−1 faster than previously established from Landsat images by other workers. This observation suggests that the discharge is larger and, therefore, the mass balance less positive than previously thought; however, our study also shows that current information is insufficient to allow for precise mass-balance calculations. Images of the glacier front show that a calving event released an iceberg about 5 km wide between February and December 1992. The position of the glacier front has not changed substantially between 1973 (Landsat image) and 1992 (ERS-1 images).
    Print ISSN: 0260-3055
    Electronic ISSN: 1727-5644
    Topics: Geography , Geosciences
    Published by Cambridge University Press on behalf of International Glaciological Society.
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  • 6
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    Voyager Cartography (1985)
    In:  CASI
    Details
    Publication Date: 2014-10-09
    Description: The Jovian and Saturnian satellites are being mapped at several scales from Voyager 1 and 2 data. The maps include specially formatted color mosaics, controlled photomosaics, and airbrush maps. More than 500 Voyager images of the Jovian and Saturnian satellites were radiometrically processed in preparation for cartographic processing. Of these images, 235 were geometrically transformed to map projections for base mosaic compilations. Special techniques for producing hybrid photomosaic/airbrush maps of Callisto are under investigation. The techniques involve making controlled computer mosaics of all available images with highest resolution images superimposed on lowest resolution images. The mosaics are then improved by airbrushing: seams and artifacts are removed, and image details enhanced that had been lost by saturation in some images. A controlled mosaic of the northern hemisphere of Rhea is complete, as is all processing for a similar mosaic of the equatorial region. Current plans and status of the various series are shown in a table.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA, Washington Repts. of Planetary Geol. and Geophys. Program, 1984; p 554-555
    Format: text
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    NASA TECHNICAL REPORTS
  • 7
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    Voyager cartography (1987)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: The Jovian and Saturnian satellites are being mapped at several scales from Voyager 1 and 2 data. The maps are especially formatted color mosaics, controlled photomosaics, and airbrush maps. At 1:5,000,000 scale, mapping of Io, Europa, and Ganymede is complete. At 1:15,000,000 scale, mapping of Io and Europa is complete, and mapping of Ganymede is approximately complete. A controlled mosaic of Rhea has been compiled as a Digital Image Model (DIM) in the same format as is being used for Mars. The mosaic is being formatted for publication as a two-sheet set (Lambert Azimuthal Equal Area, Mercator, and Polar Stereographic projections). Magnetic tape copies of the DIM have been distributed to regional Planetary Image Facilities and other interested users. The DIM has a scale of 1/16 degree/pixel, corresponding to approximately 833 m/pixel on Rhea. Details of the status of the various map series are reported quarterly to Planetary Geology Principal Investigators.
    Keywords: LUNAR AND PLANETARY EXPLORATION
    Type: NASA, Washington, Reports of Planetary Geology and Geophysics Program, 1986; p 527
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Global Geologic Map of Europa (2008)
    In:  CASI
    Details
    Publication Date: 2019-08-26
    Description: Europa, with its indications of a sub-ice ocean, is of keen interest to astrobiology and planetary geology. Knowledge of the global distribution and timing of Europan geologic units is a key step for the synthesis of data from the Galileo mission, and for the planning of future missions to the satellite. The first geologic map of Europa was produced at a hemisphere scale with low resolution Voyager data. Following the acquisition of higher resolution data by the Galileo mission, researchers have identified surface units and determined sequences of events in relatively small areas of Europa through geologic mapping using images at various resolutions acquired by Galileo's Solid State Imaging camera. These works provided a local to subregional perspective and employed different criteria for the determination and naming of units. Unified guidelines for the identification, mapping and naming of Europan geologic units were put forth by and employed in regional-to-hemispheric scale mapping which is now being expanded into a global geologic map. A global photomosaic of Galileo and Voyager data was used as a basemap for mapping in ArcGIS, following suggested methodology of all-stratigraphy for planetary mapping. The following units have been defined in global mapping and are listed in stratigraphic order from oldest to youngest: ridged plains material, Argadnel Regio unit, dark plains material, lineaments, disrupted plains material, lenticulated plains material and Chaos material.
    Keywords: Lunar and Planetary Science and Exploration
    Type: Abstracts of the Annual Meeting of Planetary Geologic Mappers, Flagstaff, AZ, 2008; NASA/CP-2008-215469
    Format: application/pdf
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