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  • EARTH RESOURCES AND REMOTE SENSING  (193)
  • Lunar and Planetary Science and Exploration  (99)
  • ASTROPHYSICS
  • Life and Medical Sciences
  • 2010-2014  (99)
  • 1975-1979  (283)
  • 1970-1974
  • 1950-1954
  • 2014  (99)
  • 1975  (283)
Collection
Keywords
Publisher
Years
  • 2010-2014  (99)
  • 1975-1979  (283)
  • 1970-1974
  • 1950-1954
Year
  • 11
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    A rapid method for the determination of microbial susceptibility using the firefly luciferase assay for adenosine triphosphate (ATP) (1975)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Luciferase assay for adenosine triphosphate (ATP) was optimized for pure bacteria in broth in order to evaluate if changes in bacterial ATP content could be used as a rapid measure of antibiotic effect on microorganisms. Broth cultures of log phase bacteria were incubated at 310 K (37 C) for 2.5 hours at antimicrobial concentrations which resulted in the best discrimination between sensitive and resistant strains. Eighty-seven strains of 11 bacterial species were studied for their susceptibility to 12 commonly used antimicrobial agents: ampicillin, Penicillin G, nafcillin, carbenicillin, cephalothin, tetracycline, erythromycin, clindamycin, gentamicin, nitrofurantoin, colistin, and chloramplenicol. The major advantage of the ATP system over existing methods of rapid microbial susceptibility testing is that the assay can be made specific for bacterial ATP.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Anal. Appl. of Bioluminescence and Chemiluminescence; p 43-44
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 12
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    Remote terminal system evaluation (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An Earth Resources Data Processing System was developed to evaluate the system for training, technology transfer, and data processing. In addition to the five sites included in this project two other sites were connected to the system under separate agreements. The experience of these two sites is discussed. The results of the remote terminal project are documented in seven reports: one from each of the five project sites, Purdue University, and an overview report summarizing the other six reports.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: NASA-CR-147402 , LARS-INFORM-NOTE-062775
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 13
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    Shortgrass prairie spectral measurements (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The spectral methods of vegetation analysis not only measure herbage biomass on a nondestructive basis but also can be adapted to aircraft and satellite devices to map the spatial distribution over an area in an efficient and economical fashion. This study reviews the ground-based in situ field spectrometry in the 0.350-0.800 micron region of the spectrum. A statistical analysis of in situ spectroreflectance data from sample plots of the shortgrass prairie shows that green biomass, chlorophyll concentration, and leaf water content are directly interrelated to that composite property of the plot which is called functioning green biomass. Spectrocorrelation data indicate the spectral regions of optimum sensitivity for a remote estimation of the green biomass, chlorophyll, and leaf water content. The near-infrared region of the spectrum shows a high positive spectrocorrelation to these three sample parameters, regardless of the amount of standing dead vegetation.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: Photogrammetric Engineering and Remote Sensing; 41; Sept
    Format: text
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    NASA TECHNICAL REPORTS
  • 14
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    Radio detection of interstellar sulfur dioxide (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Interstellar sulfur dioxide (SO2) has been detected in emission from the direction of the Orion Nebula molecular cloud and from Sgr B2. SO2 is the heaviest interstellar molecule detected to date, and the only nonlinear triatomic molecule which does not contain hydrogen. The remarkable Orion emission profiles suggest that two components are supporting the SO2 emission: a dense circumstellar-type envelope, which may be in maser emission, and a warm galactic cloud component.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; 198; June 1
    Format: text
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  • 15
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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
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    NASA TECHNICAL REPORTS
  • 16
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    LANDSAT digital data processing: A near real-time application (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: An application of rapid generation of classed digital images from LANDSAT-1 was demonstrated and its feasibility evaluated by NASA in conjunction with the Environmental Protection Agency (EPA), Texas A and M University (TAMU), and the Cousteau Society. The primary purpose was to show that satellite data could be processed and transmitted to the Calypso, which was used as a research vessel, in time for use in directing it to specific locations of possible plankton upwellings, sediment, or other anomalies in the coastal water areas along the Gulf of Mexico.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: M-9 , NASA Earth Resources Surv. Symp., Vol. 1-C; p 2063-2073
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    NASA TECHNICAL REPORTS
  • 17
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    Geological significance of features observed in Colorado from orbital altitudes (1975)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Three major investigations using LANDSAT and Skylab imagery concerned with analyses of color anomalies and linear features of central Colorado are discussed. The studies conducted are concerned with the geological significance of spectral and spatial features on the images. Color anomalies in Skylab photographs were analyzed and evaluated for locating indicators of mineralization. The relationships were determined of all linear features in a LANDSAT image to the rock joint systems and the detectable larger geologic structures; techniques for extracting that geologic information are indicated. Some anomalous megalinear features in LANDSAT and Skylab images are analyzed which transect major structures and, their associated geologic features are described.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: G-10 , NASA. Lyndon B. Johnson Space Center NASA Earth Resources Surv. Symp., Vol. 1-B; p 713-760
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  • 18
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    Automatic categorization of land-water cover types of the Green Swamp, Florida, using Skylab multispectral scanner (S-192) data (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: The techniques used and the results achieved in the successful application of Skylab Multispectral Scanner (EREP S-192) high-density digital tape data for the automatic categorizing and mapping of land-water cover types in the Green Swamp of Florida were summarized. Data was provided from Skylab pass number 10 on 13 June 1973. Significant results achieved included the automatic mapping of a nine-category and a three-category land-water cover map of the Green Swamp. The land-water cover map was used to make interpretations of a hydrologic condition in the Green Swamp. This type of use marks a significant breakthrough in the processing and utilization of EREP S-192 data.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E-15 , NASA. Lyndon B. Johnson Space Center. NASA Earth Reseources Survey Symp. Vol. 1-A: Agr., Environment; p 479-506
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    NASA TECHNICAL REPORTS
  • 19
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    Trophic status of inland lakes from LANDSAT (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: A first-cut assessment of the trophic status of inland lakes in Wisconsin was obtained from LANDSAT data. To satisfy the criteria of the project, a large and versatile computer program was developed to gain access to LANDSAT data. This analysis technique has proven to be a cost-effective method of classifying inland lakes in Wisconsin.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E-12 , NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp. Vol. 1-A: Agr., Environment; p 443-450
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  • 20
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    LANDSAT-1 data as it has been applied for land use and water quality data by the Virginia State Water Control Board. 1: The state project. 2: Monitoring water quality from LANDSAT (1975)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: LANDSAT-1 imagery has been used for water quality and land use monitoring in and around the Swift Creek and Lake Chesdin Reservoirs in Virginia. This has proved useful by (1) helping determine valid reservoir sampling stations, (2) monitoring areas not accessible by land or water, (3) giving the State a viable means of measuring Secchi depth readings in these inaccessible areas, (4) giving an overview of trends in changing sedimentation loadings over a given time period and classifying these waters into various categories, (5) enabling the State to inventory all major lakes and reservoirs and computing their acreage, (6) monitoring land use changes in any specific area, (7) evaluating possible long-term environmental effects of nearby developments, and (8) monitoring and predicting population shifts with possible impact on water quality problems. The main problems in the long-term use of such imagery appear to be cost and lack of consistency due to cloud cover limitations.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E-10 , NASA. Lyndon B. Johnson Space Center NASA Earth Resources Survey Symp. Vol. 1-A: Agr., Environment; p 371-418
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