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Université de Neuchâtel

Does the Rayleigh equation apply to evaluate field isotope data in contaminant hydrogeology?

Abe, Yumiko ; Hunkeler, Daniel

In: Environmental science & technology, 2006, vol. 40, no. 5, p. 1588-1596

Stable isotope data have been increasingly used to assess in situ biodegradation of organic contaminants in groundwater. The data are usually evaluated using the Rayleigh equation to evaluate whether isotope data follow a Rayleigh trend, to calculate the extent of contaminant biodegradation, or to estimate first-order rate constants. However, the Rayleigh equation was developed for homogeneous...

Université de Neuchâtel

Evaluating the fate of chlorinated ethenes in streambed sediments by combining stable isotope, geochemical and microbial methods

Abe, Yumiko ; Aravena, Ramon ; Zopfi, Jakob ; Parker, Beth ; Hunkeler, Daniel

In: Journal of Contaminant Hydrology, 2009, vol. 107, no. 1-2, p. 10-21

The occurrence of chlorinated ethene transformation in a streambed was investigated using concentration and carbon isotope data from water samples taken at different locations and depths within a 15×25 ms tudy area across which a tetrachloroethene (PCE) plume discharges. Furthermore, it was evaluated how the degree of transformation is related to groundwater discharge rates, redox conditions,...

Université de Neuchâtel

Aniquilar la Ilustración o el canon cristiano de la lectura en el siglo XVIII

Rodríguez Sánchez de León, María José

In: Arte Nuevo, 2017, vol. 4, p. 955-986

En este trabajo se estudia la teoría de la lectura y la propuesta de interpretación literaria que llevó a cabo, como complemento de la labor censora institucional, parte del clero en el último cuarto del siglo XVIII. A partir del análisis de un texto paradigmático francés de Nicolas Jamin, el Tratado de la lectura cristiana (1774) y de su traducción española (1784), se examina la...