Geochemical Anomalies in Soils and Surface Waters in an Area Adjacent to a Long-Used Controlled Municipal Landfill

Municipal landfills, even when controlled, are potential sources of soil and water pollution in surrounding areas, due to the migration of pollutants through water and air. This research assesses geochemical anomalies of heavy elements and rare earth elements in soils and surface waters in an adjacent area to a controlled municipal landfill near Madrid (Central Spain), under long-term operation. Twenty soil and eighteen water samples were collected in 2017 and 2018 and analyzed for this purpose. Spatial distribution and concentrations of heavy elements (Ag, Cd, Cu, Mn, Ni, Pb, Tl, and Zn) and rare Earth elements (La, Ce, and Gd) are heterogeneous and significantly higher than soil background levels, but below the legal limits to consider intervention. Accumulation of heavy and rare Earth elements in soil nearest the landfill is attributed to occur via wind and wind-driven rain transport, while their accumulation in sediments is attributed to water transport through the creeks. Surface waters show large contamination by organic and inorganic compounds and influence geochemical anomalies in sediments. The water quality is below allowable concentrations for drinking water. The combined evaluation of the soil and water samples performed in the present work is proposed as a pilot study that may be applicable to similar surrounding landfill areas worldwideThe work has been partially financed by the Faculty of Sciences of the Autonomous University of Madrid

Efecto de las estelas en los parques eólicos

Para el diseño de parques eólicos es de interés conocer la producción de energía eléctrica de las turbinas eólicas, o aeroturbinas, así como las cargas que pueden sufrir las mismas limitando su vida útil. La producción de energía está ligada a la intensidad del viento incidente, y la vida útil de las aeroturbinas al grado de agitación turbulenta del viento. El grupo de Mecánica de Fluidos Aplicado a la Ingeniería Industrial de la UPM, ha desarrollado programas informáticos para estimar la magnitud del viento y la intensidad de la turbulencia, en función de las características del terreno y de la distribución de las turbinas en el parque eólico, utilizando para ello modelos numéricos que simulan el movimiento turbulento de los fluidos

Efectos topográficos en el recurso eólico.

Para el diseño de parques eólicos es de interés conocer la producción de energía eléctrica de las turbinas eólicas, o aeroturbinas, así como las cargas que pueden sufrir las mismas limitando su vida útil. La producción de energía está ligada a la intensidad del viento incidente, y la vida útil de las aeroturbinas al grado de agitación turbulenta del viento. El grupo de Mecánica de Fluidos Aplicado a la Ingeniería Industrial de la UPM, ha desarrollado programas informáticos para estimar la magnitud del viento y la intensidad de la turbulencia, en función de las características del terreno y de la distribución de las turbinas en el parque eólico, utilizando para ello modelos numéricos que simulan el movimiento turbulento de los fluido

Pulsatile flow in coronary bifurcations for different stenting techniques

The objective of this work is to analyze the local hem odynamic changes caused in a coronary bifurcation by three different stenting techniques: simple stenting of the main vessel, simple stenting of the main vessel with kissing balloon in the side branch and culotte. To carry out this study an idealized geometry of a coronary bifurcation is used, and two bifurcation angles, 45º and 90º, are chosen as representative of the wide variety of re al configurations. In order to quantify the influence of the stenting technique on the local blood flow, both numeri- cal simulations and experimental measurements are performed. First, steady simulations are carried out with the commercial code ANSYS-Fluent, and then, experimental measurements with PIV (Particle Image Velocimetry) obtained in the laboratory are used to validate the numerical simulation. The steady computational simulations show a good overall agreement with the experimental data. Second, pulsatile flow is considered to take into account the tran- sient effects. The time averaged wall shear stress, scillatory shear index and pressure drop obtained numerically are used to compare the behavior of the stenting techniques

Hemodynamic performance of different stent strategies for coronary bifurcations. Evaluation with a mathematical model

Purpose: Best percutaneous treatment strategy for lesions in coronary bifurcations is an ongoing subject of debate. There is limited data that analyses the effect of the different bifurcation strategies on coronary flow. Our aim is to evaluate the influence of different bifurcation stenting strategies on hemodynamic parameters, both in the main vessel (MV) and side branch (SB)

Sensibilización y formación en la accesibilidad e inclusión de las personas con discapacidad visual al proceso de Enseñanza-Aprendizaje. SENSIVISUAL-UCM

El objetivo general de este proyecto viene definido por la necesidad de inclusión de las personas con discapacidad visual, parcial o absoluta, en el mundo académico, así como la de favorecer su incorporación al mundo laboral con unas condiciones formalizadas y estables. A través de las acciones realizadas en este proyecto de innovación y mejora de la calidad docente se podrá mejorar la accesibilidad en los diferentes Grados de la Universidad Complutense de Madrid, ayudando en la generación de material didáctico y composición de grupos de trabajo que fomenten el trabajo colaborativo permitiendo el re-fuerzo académico

Measurement of the cosmic ray spectrum above 4×10184{\times}10^{18} eV using inclined events detected with the Pierre Auger Observatory

A measurement of the cosmic-ray spectrum for energies exceeding $4{\times}10^{18}$ eV is presented, which is based on the analysis of showers with zenith angles greater than $60^{\circ}$ detected with the Pierre Auger Observatory between 1 January 2004 and 31 December 2013. The measured spectrum confirms a flux suppression at the highest energies. Above $5.3{\times}10^{18}$ eV, the "ankle", the flux can be described by a power law $E^{-\gamma}$ with index $\gamma=2.70 \pm 0.02 \,\text{(stat)} \pm 0.1\,\text{(sys)}$ followed by a smooth suppression region. For the energy ($E_\text{s}$) at which the spectral flux has fallen to one-half of its extrapolated value in the absence of suppression, we find $E_\text{s}=(5.12\pm0.25\,\text{(stat)}^{+1.0}_{-1.2}\,\text{(sys)}){\times}10^{19}$ eV.Comment: Replaced with published version. Added journal reference and DO

Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory

The Auger Engineering Radio Array (AERA) is part of the Pierre Auger Observatory and is used to detect the radio emission of cosmic-ray air showers. These observations are compared to the data of the surface detector stations of the Observatory, which provide well-calibrated information on the cosmic-ray energies and arrival directions. The response of the radio stations in the 30 to 80 MHz regime has been thoroughly calibrated to enable the reconstruction of the incoming electric field. For the latter, the energy deposit per area is determined from the radio pulses at each observer position and is interpolated using a two-dimensional function that takes into account signal asymmetries due to interference between the geomagnetic and charge-excess emission components. The spatial integral over the signal distribution gives a direct measurement of the energy transferred from the primary cosmic ray into radio emission in the AERA frequency range. We measure 15.8 MeV of radiation energy for a 1 EeV air shower arriving perpendicularly to the geomagnetic field. This radiation energy -- corrected for geometrical effects -- is used as a cosmic-ray energy estimator. Performing an absolute energy calibration against the surface-detector information, we observe that this radio-energy estimator scales quadratically with the cosmic-ray energy as expected for coherent emission. We find an energy resolution of the radio reconstruction of 22% for the data set and 17% for a high-quality subset containing only events with at least five radio stations with signal.Comment: Replaced with published version. Added journal reference and DO