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  • 1985-1989  (2)
  • 1975-1979
  • 42.55.Hq  (1)
  • Soils  (1)
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  • 1985-1989  (2)
  • 1975-1979
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Comparison of pulsed and continuous operation of the Cu II laser (1987)
    Springer
    Applied physics 43 (1987), S. 183-187 
    Details
    ISSN: 1432-0649
    Keywords: 42.55.Hq
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The peak output power of Cu II laser emission in the uv at 260 nm and in the ir at 780 nm was measured for different operating conditions in the pulsed and the cw mode. In contrast to the ir laser output the laser power in the uv is higher in the cw mode than in the quasi cw mode. This property depends on contaminations of the discharge gas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00695621
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Extraction of nitrogen from soils (1989)
    Springer
    Biology and fertility of soils 8 (1989), S. 189-190 
    Details
    ISSN: 1432-0789
    Keywords: Nitrogen ; Ammonium ; Nitrate ; Nitrogen extraction ; Soils ; Nitrogen mineralization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Summary A roller bed and rotary end-over-end shaker were compared for the extraction of mineral N from a variety of soil types; both were equally efficient with an optimum extraction time of 30 min. However, the roller bed permitted a greater operational capacity, a faster throughput of samples, and easier identification of sample bottles compared with the end-over-end shaker. More NH4 +-N and NO3 −-N (P〈0.001) was recovered from soil by 2 M KCl than by any other extractant, in a soil: extractant ratio of 1 to 5 (w:v), except water, which was equally efficient at removing NO3 −-N from soils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00257765
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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