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  • Artikel: DFG Deutsche Nationallizenzen  (2)
  • 1985-1989  (2)
  • 1975-1979
  • 1905-1909
  • 79.20R  (1)
  • Nitrogen  (1)
  • Soils  (1)
Datenquelle
  • Artikel: DFG Deutsche Nationallizenzen  (2)
Materialart
Erscheinungszeitraum
  • 1985-1989  (2)
  • 1975-1979
  • 1905-1909
Jahr
Schlagwörter
  • 1
    Digitale Medien
    Digitale Medien
    Extraction of nitrogen from soils (1989)
    Springer
    Biology and fertility of soils 8 (1989), S. 189-190 
    Details
    ISSN: 1432-0789
    Schlagwort(e): Nitrogen ; Ammonium ; Nitrate ; Nitrogen extraction ; Soils ; Nitrogen mineralization
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Geologie und Paläontologie , Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: 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.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00257765
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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  • 2
    Digitale Medien
    Digitale Medien
    Observation of transient adsorption or skipping motion in small angle ion-surface scattering (1988)
    Springer
    Applied physics 47 (1988), S. 83-85 
    Details
    ISSN: 1432-0630
    Schlagwort(e): 79.20R ; 34.50 ; 34.70 ; 79.80
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Maschinenbau , Physik
    Notizen: Abstract Transient adsorption or skipping motion of silicon ions scattered under specular conditions from a Cu(111) surface is reported. The phenomena is identified on the basis of the observation of discrete energy loss peaks in the scattered positive and negative ion kinetic energy distributions, together with their behaviour upon variation of the crystal azimuth, incidence angle of the beam to the surface, and scattering angular distributions. Up to five reflections in a binding potential were seen. We propose that the beam is trapped following an energy loss, by electron-hole pair or plasmon excitation, which exceeds the incident beam energy component normal to the surface. The results lend strong support to the thesis that ion beam techniques can probe the family of potential surfaces upon which adsorption and reaction, at thermal energies, proceed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00619702
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
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