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  • 1
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    An airborne laser fluorosensor for the detection of oil on water (1975)
    In:  CASI
    Details
    Publication Date: 2006-01-11
    Description: An airborne laser fluorosensor for the detection of oil derivatives on water has been tested. The system transmits 337 nm UV radiation at the rate of 100 pulses per second and monitors fluorescent emission at 540 nm. Daylight flight tests were made over the areas of controlled oil spills and additional reconnaissance flights were made over a 50 km stretch of the Delaware River to establish ambient oil baseline in the river. The results show that the device is capable of monitoring and mapping out extremely low level oil on water which cannot be identified by ordinary photographic method.
    Keywords: LASERS AND MASERS
    Type: The Use of Lasers for Hydrographic Studies; p 197-202
    Format: text
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  • 2
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    Continuous self-mode locking of infrared gas lasers (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: IR gas pulsed lasers continuous self mode locking, observing optical spectra with scanning Fabry-Perot interferometer
    Keywords: MASERS
    Type: ; ADEMIE DES SCIENCES
    Format: text
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  • 3
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    Variation in SEU sensitivity of dose-imprinted CMOS SRAMs (1989)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: The authors report on an experimental study of dose-induced changes in SEU (single-event-upset) sensitivity of CMOS static RAMs. Two time regimes were investigated following exposure of memories to cobalt-60 gamma rays: the near term, within a few hours after exposure, and the long term, after many days. Samples were irradiated both at room and at liquid nitrogen temperatures. The latter procedure was used in order to freeze in the damage state until SEU measurements could be made prior to annealing. Results show that memories damaged by dose are more sensitive to upsets by heavy ions. The induced changes are substantial: threshold linear energy transfer (LET) values decreased by as much as 46 percent and asymptotic cross sections increased by factors of two to four (unannealed samples).
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: IEEE Transactions on Nuclear Science (ISSN 0018-9499); 36; 2330-233
    Format: text
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  • 4
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    Macroscopic Lagrangian description of warm plasmas. II Nonlinear wave interactions (1983)
    In:  Other Sources
    Details
    Publication Date: 2011-08-18
    Description: A macroscopic Lagrangian is simplified to the adiabatic limit and expanded about equilibrium, to third order in perturbation, for three illustrative cases: one-dimensional compression parallel to the static magnetic field, two-dimensional compression perpendicular to the static magnetic field, and three-dimensional compression. As examples of the averaged-Lagrangian method applied to nonlinear wave interactions, coupling coefficients are derived for interactions between two electron plasma waves and an ion acoustic wave, and between an ordinary wave, an electron plasma wave, and an ion acoustic wave.
    Keywords: PLASMA PHYSICS
    Type: Radio Science (ISSN 0048-6604); 18; 1369-137
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  • 5
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    Early evaluation of Thematic Mapper data for coastal process studies (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: Two sets of TM data taken over the ocean off the coast of the Southeastern U.S. Bight were studied for the applicability of TM data to marine environments. First, the results of applying TM and TMS data to determine chlorophyll concentration in the ocean are presented. Chlorophyll quantification in the range of 0.5 to 2.0 mg/cu m was achieved by taking the ratio of TM band-1/band-2. Second, the results of applying TM band-6 data to monitor sea surface temperature are described. A comparison of TM data with AVHRR data shows TM readings coincide with AVHRR data within a scatter of 0.5 deg C in most of the areas studied. Lastly, the results of a technique to map the water depths of coral reefs in the Great Bahama Bank are demonstrated. Depths from 0 to 20 meters were delineated using TM band-1. The classification accuracy and origins of anomalous depth points are discussed.
    Keywords: OCEANOGRAPHY
    Type: Advances in Space Research (ISSN 0273-1177); 5; 5, 19
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  • 6
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    An evaluation of 685 nm fluorescence imagery of coastal waters (1985)
    In:  Other Sources
    Details
    Publication Date: 2011-08-19
    Description: To evaluate the possible application of sunlight-illuminated fluorescence at 685 nm for remote sensing of phytoplankton concentrations, an ocean-color scanner is flown on an aircraft. The results of an analysis of the scanner data, obtained from a series of test flights conducted along the Elbe River and its estuary in the North Sea, show that 685 nm fluorescence is a promising remote-sensing method. The observation of a strong correlation between the fluorescence yields and the chlorophyll concentrations determined by the absorption method which uses the reflectance ratio of blue/green channels, is discussed. The two methods are compared and it is shown that the fluorescence method has an edge over the other due to the data-processing algorithm and its applicability for surveying bio-resources in all types of water. Photographs of the chlorophyll patterns are presented.
    Keywords: OCEANOGRAPHY
    Type: ESA Journal (ISSN 0379-2285); 9; 1, 19
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  • 7
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    Effect of dissolved hydrogen on the fatigue behavior of an Al-Al sub 2 O sub 3 SAP- type alloy. (1966)
    In:  Other Sources
    Details
    Publication Date: 2011-08-11
    Description: Electron microscopy analysis of dissolved hydrogen induced fracture in room temperature cantilever bend fatigue testing of dispersion strengthened aluminum-aluminum oxide alloy
    Keywords: MATERIALS, METALLIC
    Type: ASM TRANSACTIONS QUARTERLY
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  • 8
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    A study of the neutral atomic iodine laser (1970)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: Laser action in 5d-6p electron transitions of neutral atomic iodine, measuring electron temperature and density
    Keywords: MASERS
    Type: ; ADEMIE DES SCIENCES
    Format: text
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  • 9
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    New algae mapping technique by the use of an airborne laser fluorosensor. (1973)
    In:  Other Sources
    Details
    Publication Date: 2011-08-16
    Description: An airborne laser fluorosensor for the detection of algae in the sea has been developed. The system transmits dye laser radiation at 590 nm and monitors the fluorescent emission at 685 nm from chlorophyll-a bearing microorganisms. The system was successfully flown over the test areas of Lake Ontario and Chesapeake Bay. The device is sensitive to a fraction of mg/cu-M chlorophyll-a density in the water from an altitude of 30 m.
    Keywords: GEOPHYSICS
    Type: Applied Optics; 12; July 197
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  • 10
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    Method of stretching polypropylene for use as soft X-ray detector windows. (1968)
    In:  Other Sources
    Details
    Publication Date: 2011-08-12
    Description: Polypropylene preparation and evaluation as soft X ray detector window material
    Keywords: MACHINE ELEMENTS AND PROCESSES
    Type: ; ADEMIE DES SCIENCES
    Format: text
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