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  • ISM: jets and outflows  (3)
  • biological management  (3)
  • Springer  (6)
  • American Geophysical Union
  • American Geophysical Union (AGU)
  • BioMed Central
  • Molecular Diversity Preservation International
  • Public Library of Science
  • 2020-2022
  • 1995-1999  (6)
Collection
Keywords
Publisher
  • Springer  (6)
  • American Geophysical Union
  • American Geophysical Union (AGU)
  • BioMed Central
  • Molecular Diversity Preservation International
    • +
Years
  • 2020-2022
  • 1995-1999  (6)
Year
  • 1
    Electronic Resource
    Electronic Resource
    Near-infrared imaging of H2 in molecular outflows from young stars (1995)
    Springer
    Astrophysics and space science 224 (1995), S. 121-124 
    Details
    ISSN: 1572-946X
    Keywords: Shock waves ; ISM: jets and outflows ; ISM: molecules ; Infrared
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In an attempt to identify the molecular shocks associated with the entrainment of ambient gas by collimated stellar winds from young stars, we have imaged a number of known molecular outflows in H2 v=1-0 S(1) and wide-band K. In each flow, the observed H2 features are closely associated with peaks in the CO outflow maps. We therefore suggest that the H2 results from shocks associated with the acceleration or entrainment of ambient, molecular gas. This molecular material may be accelerated either in a bow shock at the head of the flow, or along the length of the flow through a turbulent mixing layer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00667834
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Biological and physical events involved in the origin, effects, and control of organic matter in solar saltworks (1995)
    Springer
    International journal of salt lake research 4 (1995), S. 335-347 
    Details
    ISSN: 1573-8590
    Keywords: Aphanothece halophytica ; Artemia ; biological management ; Dunaliella ; halobacteria ; hypersalinity ; Myxobaktron salinum ; organic release ; sodium chloride ; solar saltworks ; Synechococcus sp
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract Aspects of communities and events in the concentrating ponds (S.G. 1.130 to 1.214) and salt crystallizing ponds (S.G. 1.215 to 1.264) of solar saltworks pertinent to salt manufacture are described. Communities that aid salt manufacture enable continuous and efficient production of high quality salt at a saltworks' design capacity, and they provide important controls on levels of organic matter in the brine. Fluctuating salinities, high concentrations of nutrients, and petroleum products are disturbances that causeAphanothece halophytica andDunaliella salina to release excessive quantities of organic matter, and that suppress or cause death to nutrient stripping organisms. Disturbances result in decreased quality and quantity of salt and increased costs for salt harvest, washing, and pond upkeep. Organic matter can be controlled by management techniques that keep nutrient stripping communities at proper levels and maintain a narrow and unchanging range of salinities in each pond, by constructing pond dikes able to withstand wind and water erosion, and by preventing spills of petroleum products in the ponds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01999117
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  • 3
    Electronic Resource
    Electronic Resource
    Observations on a solar saltworks near Burgas, Bulgaria (1998)
    Springer
    International journal of salt lake research 7 (1998), S. 357-368 
    Details
    ISSN: 1573-8590
    Keywords: Aphanothece ; Artemia ; cyanobacteria ; biological management ; Dunaliella ; hypersalinity ; sodium chloride ; solar saltworks
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract Data on biota and nutrients in solar ponds of a saltworks near Burgas, Bulgaria, were obtained. Surveys of the biota were undertaken, and records from management officials gave information on biological and physical conditions related to salt production. The decrease in the quality and quantity of sodium chloride harvested that began 10 to 15 years before the study, may be related to the high levels of plankton, combined nitrogen and phosphate, and the large accretion of bottom sediments and density of benthic communities. Biological management can improve the quality and quantity of the sodium chloride produced by the saltworks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009034431619
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  • 4
    Electronic Resource
    Electronic Resource
    Observations on a solar saltworks near Burgas, Bulgaria (1998)
    Springer
    International journal of salt lake research 7 (1998), S. 357-368 
    Details
    ISSN: 1573-8590
    Keywords: Aphanothece ; Artemia ; cyanobacteria ; biological management ; Dunaliella ; hypersalinity ; sodium chloride ; solar saltworks
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geography
    Notes: Abstract Data on biota and nutrients in solar ponds of a saltworks near Burgas, Bulgaria, were obtained. Surveys of the biota were undertaken, and records from management officials gave information on biological and physical conditions related to salt production. The decrease in the quality and quantity of sodium chloride harvested that began 10 to 15 years before the study, may be related to the high levels of plankton, combined nitrogen and phosphate, and the large accretion of bottom sediments and density of benthic communities. Biological management can improve the quality and quantity of the sodium chloride produced by the saltworks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02442144
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  • 5
    Electronic Resource
    Electronic Resource
    Shocks in the L 1551-IRS 5 outflow optical and near-infrared imaging (1995)
    Springer
    Astrophysics and space science 233 (1995), S. 51-54 
    Details
    ISSN: 1572-946X
    Keywords: Shock Waves ; ISM: jets and outflows ; ISM: kinematics and dynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present new images of the well-known molecular outflow and Herbig-Haro complex L 1551-IRS 5. Deep, high-resolution images of the central region of the flow in [SII] λλ 6716,6731 and Hα (6565 Å) are complemented by a mosaic of much of the CO outflow in H2 v=1-0 S(1). While the optical data trace the intermediate-to-high excitation shocks in the flow (v shock 〉 30 – 50 km s−1), the near-IR data reveal the lower-excitation, molecular shocks (v shock ∼ 10–50 km s−1). In particular, the H2 data highlight the regions where the flow impacts and shocks ambient molecular gas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00627330
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  • 6
    Electronic Resource
    Electronic Resource
    Near-infrared imaging in H2 of molecular (CO) outflows from young stars (1995)
    Springer
    Astrophysics and space science 233 (1995), S. 59-62 
    Details
    ISSN: 1572-946X
    Keywords: Shock Waves ; ISM: jets and outflows ; ISM: kinematics and dynamics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We have imaged several known molecular (CO) outflows in H2 v=1-0 S(1) and wide-band K in order to identify the molecular shocks associated with the acceleration of ambient gas by outflows from young stars. We detected H2 line emission in all the flows we observed: L 1157, VLA 1623, NGC 6334I, NGC 2264G, L 1641N and Haro 4-255. A comparison of the H2 data with CO outflow maps strongly suggests that “prompt entrainment” near the head of a collimated jet probably is the dominant mechanism for producing the CO outflows in these sources.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00627332
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