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  • 1
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    Integrated steam systems for electric power generation from waste heat (1977)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA. Washington Proc. of Conf. on Waste Heat Management and Util., Vol. 3; 15 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Social aspects of regulating waste heat (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA, Washington Proc. of the Conf. on Waste Heat Management and Util., Volume 1; 17 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    A study of the chemical degradation of ClONO2 in the stratosphere (1977)
    In:  Other Sources
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    Publication Date: 2011-08-17
    Description: The flash photolysis-resonance fluorescence system described by Davis et al. (1974) is used to measure the rate constants for the reactions of chlorine nitrate (ClONO2) with stratospheric O(3-P) and OH. Both reactions are examined in a pyrex cell with an internal volume of about 150 cu cm, where the reaction mixture was maintained at 245 K by circulating methanol from a thermostated circulation bath through the outer jacket of the reaction cell. The relative chemical degradation rates as a function of altitude for both reactions are tabulated, which shows that the chemical degradation pathways contribute less than 10% to the total rate of ClONO2 destruction at altitudes less than 30 km. Since the concentration of ClONO2 is calculated to be near its maximum around 25 km and drops off very significantly at higher altitudes, it is concluded that the photochemical decomposition of ClONO2 in the stratosphere is by far the most important degradation path for this molecule.
    Keywords: ENVIRONMENT POLLUTION
    Type: Geophysical Research Letters; 4; Jan. 197
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Boundary layer measurements of the OH radical in the vicinity of an isolated power plant plume - SO2 and NO2 chemical conversion times (1979)
    In:  Other Sources
    Details
    Publication Date: 2011-08-17
    Description: Direct measurements of the OH radical in the vicinity of an isolated power plant plume are reported. These measurements were used to estimate the conversion time of SO2 to H2SO4-sulfate aerosol via the initiating step OH + SO2 + M yields HSO3. Using the near-high-noon measured value of OH (9.5 million per cu cm), resulted in a 1/e conversion time of 1.4 days. The latter lifetime would correspond to a conversion rate of about 2%/hr. When the lifetime calculation was modified to take into consideration the OH diurnal cycle, the 1/e conversion time for SO2 was found to be 4.4 days, giving an apparent overall rate of conversion of about 0.7%/hr. Similar calculations carried out for the conversion of NO2 to NHO3 resulted in 1/e lifetimes for NO2 of 2-3 h for midday time periods.
    Keywords: ENVIRONMENT POLLUTION
    Type: Atmospheric Environment; 13; 8, 19; 1979
    Format: text
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    NASA TECHNICAL REPORTS
  • 5
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    Adsorption bed models used in simulation of atmospheric control systems (1978)
    In:  CASI
    Details
    Publication Date: 2019-06-27
    Description: Two separate techniques were used to obtain important basic data for the adsorption of seven liquid and eight gaseous trace contaminants. A columetric system used in previous HSC studies was modified to determine the HSC capacity of all the contaminants. A second study of six of the liquids was performed in a gas chromatorgraph. The results of these two studies are reported in two parts. First, a brief summary of the chromatographic results are given. Second, a thesis is given which reports in some detail the results of the volumetric studies. Comparison of the data that are common to both studies are also included.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-CR-151875
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 6
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    Satellite, aircraft, and drogue studies of coastal currents and pollutants (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The mounting interest in extracting oil and other resources from the continental shelf and continuing use of shelf and estuarine waters for waste disposal is creating a need for synoptic means of determining currents and monitoring pollutants in this area. A satellite-aircraft-drogue approach is described which employs remotely tracked expendable drogues together with satellite and aircraft observations of waste plumes and current tracers such as dyes or suspended sediment. Tests conducted on the continental shelf and in Delaware Bay indicate that the approach provides a cost-effective means of studying current circulation, oil-slick movement, and ocean waste dispersion under a wide range of environmental conditions.
    Keywords: ENVIRONMENT POLLUTION
    Type: IEEE Transactions on Geoscience Electronics; GE-15; Apr. 197
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  • 7
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    Ambient Atmospheric Hydrocarbon Content as Determined by Gas Chromatographic Techniques from Rural Tidewater Virginia in Late Spring 1974 (1975)
    In:  CASI
    Details
    Publication Date: 2019-08-14
    Description: In an attempt to ascertain the naturally generated hydrocarbon contribution to the air quality of the Hampton Roads region of Tidewater Virginia, a series of 27 air samples was obtained in two rural locations during late spring of 1974. These samples were analyzed for their hydrocarbon content (carbon number range C5 to C10) using gas chromatographic techniques. The thirty different hydrocarbon species were identified and monitored in the experiment. Preliminary analysis of the data indicates an average concentration of 397 parts per billion by weight (carbon) for the total non-methane hydrocarbon loading for C5 to C10 during the experiment. This value exceeds the National Primary Air Quality Standards as set by the Environmental Protection Agency.
    Keywords: ENVIRONMENT POLLUTION
    Type: NASA-CR-147922 , PGSTR-AP75-14
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 8
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    Monitoring estuarine circulation and ocean waste dispersion using an integrated satellite-aircraft-drogue approach (1976)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: The mounting economic pressure to extract oil and other resources from the Continental Shelf and to continue using the Shelf for waste disposal is creating a need for cost-effective synoptic means of determining currents in this area. An integrated satellite-aircraft-drogue approach has been developed which employs remotely tracked expendable drogues together with satellite and aircraft observations of waste plumes and tracers, such as dyes or suspended sediment. Tests conducted on the Continental Shelf and in Delaware Bay indicate that the system provides a cost-effective means of studying current circulation, oil slick movement, and ocean waste dispersion even under severe environmental conditions.
    Keywords: ENVIRONMENT POLLUTION
    Type: International Conference on Environmental Sensing and Assessment; Sep 14, 1975 - Sep 19, 1975; Las Vegas, NV
    Format: text
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    NASA TECHNICAL REPORTS
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