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  • 1
    Electronic Resource
    Electronic Resource
    Intercalation reaction kinetics: a TDPAC study of 2H-TaS2 intercalation (1983)
    Springer
    Il nuovo cimento della Società Italiana di Fisica 2 (1983), S. 1971-1976 
    Details
    ISSN: 0392-6737
    Keywords: Chemical kinetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Riassunto Si riportano le osservazioniin situ dell'interazione quadrupolare nucleare di181Ta durante l'elettrointercalazione di 2H-TaS2 con ioni di gadolinio idratati per mezzo di correlazioni angolari differenziali perturbate nel tempo (TDPAC).
    Abstract: Резюме Мы сообщаем о наблюдении181Ta ядерного квадрупольного взаимодействия во время электровключения 2H-TaS2 с гидратированными ионами гадолиния с помощью временных дифференциальных возмущенных угловых корреляций.
    Notes: Summary We report on thein situ observation of the181Ta nuclear quadrupole interaction during electrointercalation of 2H-TaS2 with hydrated gadolinium ions by means of time differential perturbed angular correlations (TDPAC).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02457896
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Variogram models for regional groundwater geochemical data (1982)
    Springer
    Mathematical geology 14 (1982), S. 629-644 
    Details
    ISSN: 1573-8868
    Keywords: variogram ; kriging ; interpolation ; contouring ; inverse distance weighting ; geochemical gradient
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Mathematics
    Notes: Abstract Four variogram models for regional groundwater geochemical data are presented. These models were developed from an empirical study of the sample variograms for more than 10 elements in groundwaters from two geologic regions in the Plainview quandrangle, Texas. A procedure is given for the estimation of the variogram in the isotropic and anisotropic case. The variograms were found useful for quantifying the differences in spatial variability for elements within a geologic unit and for elements in different geologic units. Additionally, the variogram analysis enables assessment of the assumption of statistical independence of regional samples which is commonly used in many statistical procedures. The estimated variograms are used in computation of kriged estimates for the Plainview quadrangle data. The results indicate that an inverse distance weighting model was superior for prediction than simple kriging with the particular variograms used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01033884
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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