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  • Articles: DFG German National Licenses  (2)
  • 1995-1999  (2)
  • 07.60.Ly  (1)
  • Key words Slope failure  (1)
  • Anti-Fab Antibody
  • Chloride
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  • Articles: DFG German National Licenses  (2)
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Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of engineering geology and the environment 57 (1998), S. 51-58 
    ISSN: 1435-9537
    Keywords: Key words Slope failure ; Rainfall ; Resistivity ; Electric prospecting ; Pyroclastic deposits ; Japan
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Resumé Dans une région soumise à la mousson, l'infiltration des eaux de pluie dans un talus est l'un des facteurs déterminants de sa stabilité. Pour comprendre le processus d'infiltration, on a utilisé une méthode automatisée de prospection électrique pour mesurer les modifications de la résistivité apparente à l'intérieur d'un talus, situé dans le sud de Kyushu, au Japon. La formation concernée est constituée de débris pyroclastiques quaternaires faiblement consolidés et perméables. Les mesures de résistivité effectuées sur une durée de six mois on mis en évidence les variations dans le talus, et en particulier un décalage marqué entre la chute de pluie et la modification de résistivité. Près de la surface, la réponsc est rapide et importante. A des profondeurs plus grandes, elle est plus lente et plus faible, mais les effets peuvent être cumulatifs.
    Notes: Abstract  Rainfall and its infiltration into a slope is one of the most important factors affecting slope stability in a monsoon region. To understand the infiltration process, changes in the apparent resistivity within a slope in southern Kyushu, Japan, have been measured using automated electric prospecting. The slope studied is underlain by Quaternary weak and permeable pyroclastic flow deposits. Resistivity data obtained over a six month period indicate that the conditions within the slope vary and a distinct time lag is recognised between the rainfall event and the change in resistivity. At near surface depths the response is rapid and large. At lower depths it is slower and smaller, but the effects may be cumulative.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 63 (1996), S. 255-264 
    ISSN: 1432-0649
    Keywords: 07.60.Ly ; 42.65.Re ; 78.47. + p
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A femtosecond frequency-domain interferometer is applied to metal-free and vanadyl phthalocyanine (H2Pc and VOPc) thin films to measure time-resolved difference phase and transmission spectra simultaneously. For both samples, the phase-change dynamics is different from the transmission-change dynamics at 620 nm, reflecting that the phthalocyanines (Pc) cannot be modeled with a two-level system but by a multi-level or inhomogeneously broadened system, in which each level pair exhibits different relaxation dynamics. Because of this dynamical difference, a phase-change measurement is required to correct distortion of the transient spectra due to induced phase modulation of probe pulses. Near zero time delay, the phase and transmission changes show different growth behavior. This behavior is explained by antisymmetric amplitude and phase gratings which are produced by coherent coupling between frequency-chirped pump and probe pulses.
    Type of Medium: Electronic Resource
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