Changes in hydrodynamic, structural and geochemical properties in carbonate rock samples due to reactive transport

Reactive transport plays an important role in the development of a wide range of both anthropic and natural processes affecting geological media. To predict the consequences of reactive transport processes on structural and hydrodynamic properties of a porous media at large time and spatial scales, numerical modeling is a powerful tool. Nevertheless, such models, to be realistic, need geochemical, structural and hydrodynamic data inputs representative of the studied reservoir or material. Here, we present an experimental study coupling traditional laboratory measurements and percolation experiments in order to obtain the parameters that define rock heterogeneity, which can be altered during the percolation of a reactive fluid. In order to validate the experimental methodology and identify the role of the initial heterogeneities on the localization of the reactive transport processes, we used three different limestones with different petrophysical characteristics. We tracked the changes of geochemical, structural and hydrodynamic parameters in these samples induced by the percolation of an acid fluid by measuring, before and after the percolation experiment, petrophysical and hydrodynamic properties of the rocks.Peer ReviewedPostprint (published version

Adsorción de bajas concentraciones de uranio en granito

Este trabajo contiene los resultados de la reelaboración de datos experimentales emergentes de la adsorción de uranio en granito. Partiendo de una isoterma de Freundlich, se consideró que ciertas hipótesis experimentales no eran enteramente correctas y se obtuvo una nueva isoterma. Puesto que ambas isotermas sugieren una adsorción de uranio mayor a lo esperable y que no son lineales, se efectuó la consideración del efecto del contenido natural de uranio del agua que albergaba el granito. Fue así posible comprobar que la adsorción no constituía un fenómeno relevante con bajas concentraciones de uranio en solución, y que era factible considerar que el modelo de adsorción era lo suficientemente lineal como para poderlo incluir en la instancia oosterior de modelación del mecanismo de flujo de agua y transporte de uranio.Publicado en Serie Correlación geológica ; no. 11

El problema inverso de la hidrología subterránea: estado del arte y método de solución

El problema inverso de la hidrología subterránea, que consiste en la obtención de los parámetros hidraúlicos de un acuífero a partir de datos de niveles piezométricos, ha sido objeto de un intenso proceso de investigación en los últimos años. En la primera parte de este artículo, se pasa revista a los trabajos más relevantes de dicho proceso. Ello da pie, en la segunda parte, a proponer un método, basado en la teoría máxima verosimilitud, que permite obtener transmisividades, coeficientes de almacenamiento y goteo en recarga y caudales y niveles en los contornos, con datos en régimen transitorio y/o estacionario en dominios bi- o cuasitri-dimensionales. El metodo se basa en la teoría del estado adjunto, lo cual se traduce en un ahorro considerable de memoria y tiempo de ordenador. La eficacia del algoritmo se muestra con un ejemplo.Peer Reviewe

Estimation of hydraulic parameters for heterogeneous coastal aquifer systems from pumping test analysis and tidal response

Postprint (published version

La antropologización del patrimonio y la patrimonialización de la cultura. documentar el patrimonio etnológico en el IAPH

Se pretende contextualizar la aparición de profesionales de la antropología en el IAPH paralelamente a una serie de cambios sociales, académicos y políticos que se dieron en Andalucía al principio de los años 90 y que se plasman en una ampliación del concepto de patrimonio cultural. Se reflexionará acerca de la evolución de la antropología en esta institución, la situación actual de la profesión y la gestión patrimonial en el IAPH.The article seeks to contextualize the hiring of professional anthropologists by the IAPH (Instituto Andaluz del Patrimonio Histórico, in Spanish) within a set of social, academic and political changes in Andalusia at the beginning of the nineties of the last century. Those changes led to an enlargement of the concept of cultural heritage. It reflects about the evolution of anthropology within the IAPH, the current situation of the profession, and the heritage management by this institution

Self-regulation in family foster children

This poster presents research on foster children’s capacities for self-regulation and its relation to adversity history. Children in family foster care are a vulnerable population due to their experiences of maltreatment and separation from primary caregivers. Research has shown high rates of behavioral problems and impulsivity in these children, as well as other difficulties such as poor academic adjustment. Recent theory and research advances suggest some of these problems are due to deficits in self-regulatory capacities, such as executive functions or emotion regulation. Early adversity in key developmental stages, like that suffered by many foster children, can undermine the normative development of these capacities and, consequently, their psychosocial adjustment. This study explores this topic in a sample of foster children between 4 and 8 years old who were living in non-relative foster families for at least six months in Southern Spain. We used the Behavior Rating Inventory of Executive Function (BRIEF; Gioia, Isquith, Guy, & Kenworthy, 2000), a widely used parent-reported questionnaire, to assess self-regulation in the foster children. The BRIEF was answered by the primary foster caregiver during a home visit. The information regarding adverse events and trajectory in the child protection services was obtained through case records in collaboration with caseworkers. The results of this study show us information about the capacities of self-regulation of children in family foster care. Due to the centrality of self-regulation in development and the fact that it remains responsive to well-designed interventions beyond early childhood, interventions for foster children and families should consider targeting this dimension to improve their outcomes