Listar FAI - Artículos por título
Mostrando ítems 8-27 de 53
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CAELUS: Classification of sky conditions from 1-min time series of global solar irradiance using variability indices and dynamic thresholds
Ruiz-Arias, José Antonio
; Gueymard, Christian A. (Elsevier, 2023-08-12)
Precise sky classification as a function of cloudiness is desirable or necessary in a variety of applications. CAELUS, a novel classification algorithm that relies on various thresholds to separate all possible sky conditions ... -
Carbon and oxygen minibeam radiation therapy: An experimental dosimetric evaluation
Martínez Rovira, Immaculada; González-Infantes, Wilfredo; Brons, S.; Prezado, Yolanda (Wiley, 2017-05-29)
Abstract Purpose: To perform dosimetric characterization of a minibeam collimator in both carbon and oxygen ion beams to guide optimal set up geometry and irradiation for future radiobiological studies using these ... -
Chemical State of Nitrogen and Visible Surface and Schottky Barrier Driven Photoactivities of N-Doped TiO2 Thin Films.
Romero-Gómez, Pablo; Rico, Victor; Borrás, Ana; Barranco, Ángel; Espinós, Juan Pedro; Cotrino, José; González Elipe, Agustin[et al.] (ACS, 2009-07-07)
N-doped TiO2 thin films have been prepared by plasma enhanced chemical vapor deposition and by physical vapor deposition by adding nitrogen or ammonia to the gas phase. Different sets of N-doped TiO2 thin films have been ... -
Dynamic viscosity of colloidal silica suspensions at low and high volume fractions.
Samavat, Siamak; Carrique-Fernández, Félix; Ruiz-Reina, Emilio; Zhang, Wei; Williams, Paul Melvyn (Elsevier, 2018)
A comprehensive study was carried out on the dynamic viscosity of X30 silica dispersions at both high and low volume fractions of colloidal silica particles at various electrolyte ionic strength and pH values. Booth and ... -
Effects of finite counterion size and nonhomogeneous permittivity and viscosity of the solution on the electrokinetics of a concentrated salt-free colloid
Carrique-Fernández, Félix; Ruiz-Reina, Emilio; Arroyo Roldán, Francisco José; López García, José Juan; Delgado Mora, Ángel Vicente (American Physical Society (APS), 2024)
In the present work, a general model of the electrokinetics and dielectric response of a concentrated salt-free colloid is developed which includes consideration of the finite size of the counterions released by the particles ... -
Electrochemical characterization of charged membranes from different materials and structures by membrane potential analysis.
Romero Fernández, Virginia; Gelde, Lourdes; Benavente-Herrera, Juana (MDPI, 2023-08-17)
Electrochemical characterization of positively and negatively charged membranes is performed by analyzing membrane potential values on the basis of the Teorell–Meyer–Sievers (TMS) model. This analysis allows the separate ... -
Electrokinetic and dielectric response of a concentrated salt-free colloid: Different approaches to counterion finite size effects.
Carrique-Fernández, Félix; Ruiz-Reina, Emilio; Arroyo Roldán, Francisco José; Jiménez Olivares, María Luisa; Ahualli Yapur, Silvia; Delgado Mora, Ángel Vicente[et al.] (American Physical Society (APS), 2022)
In the present work, a general model is developed for the electrokinetics and di- electric response of a concentrated salt-free colloid that takes into account the finite size of the counterions released by the particles ... -
Electrokinetic detection of the salt-free condition in colloids. Application to polystyrene latexes.
Delgado, Ángel V.; Ahualli, Silvia; Arroyo Roldán, Francisco José; Jiménez, María Luisa; Carrique-Fernández, Félix (Elsevier, 2022)
Because of their singular phenomenology, the so-called salt-free colloids constitute a special family of dispersed systems. Their main characteristic is that the dispersion medium ideally contains only the solvent and the ... -
ENSO influence on the North Atlantic European climate: A non-linear and non-stationary approach
(Springer, 2015-12-29)ENSO impact on the North Atlantic European sector (NAE) is still under discussion. Recent studies have found a non stationary feature of this teleconnection, suggesting an effective modu- lating role of the ocean mean ... -
ENSO Influence on Western European Summer and Fall Temperatures.
(American Meteorological Society, 2021)In certain regions, such as Europe, the increase in global air temperatures in the world is translated into more frequent extreme events. Recent studies suggest that the increasing intensity in heatwaves seems to be related ... -
Evaluation of a Database of the Spanish Wind Energy Resources Derived from a Regional Reanalysis
Jiménez-Garrote, Antonio; Santos-Alamillos, Francisco Javier; Sánchez-Hernández, Guadalupe; López-Cuesta, Miguel; Ruiz-Arias, José Antonio; Pozo-Vázquez, David[et al.] (MDPI, 2024-03-22)
An enhanced database (RetroDB) of the Spanish wind energy resources, derived from a high spatial resolution integration with the WRF model, is proposed and evaluated. RetroDB provides hourly capacity factor (CF) values for ... -
Exploring the meteorological potential for planning a high performance European electricity super-grid: Optimal power capacity distribution among countries
Santos-Alamillos, Francisco Javier; Brayshaw, David; Methven, John; Thomaidis, Nikolaos; Ruiz-Arias, José Antonio; Pozo-Vázquez, David[et al.] (IOP, 2017-11-13)
The concept of a European super-grid for electricity presents clear advantages for a reliable and affordable renewable power production (photovoltaics and wind). Based on the mean-variance portfolio optimization analysis, ... -
Ferromagnetic frozen structures from the dipolar hard spheres fluid at moderate and small volume fractions
Russier, Vincent; Malherbe, Jean G.; Alonso-Pereda, Juan José (IOP Publishing, 2023)
We study the magnetic phase diagram of an ensemble of dipolar hard spheres (DHS) with or without uniaxial anisotropy and frozen in position on a disordered structure by tempered Monte Carlo simulations. The crucial point ... -
Field deployment of a man-portable stand-off laser-induced breakdown spectrometer: A preliminary report on the expedition to the Cumbre Vieja volcano (La Palma, Spain, 2021)
Palanco-López, Santiago; Pérez-López, Raúl; Galindo-Jiménez, Inés; Bernal, Alberto; Rodríguez-Aranda, Sergio Eliseo; López-Escalante, María Cruz; Leinen, Dietmar; Mediato, Jose F.; López-Gutiérrez, Julio; Ramos-Barrado, José Ramón[et al.] (Elsevier, 2022-04)
This paper reports on the expedition to the Cumbre Vieja volcano (Canary Islands, Spain) in November 2021 to assess stand-off laser-induced breakdown spectroscopy for real-time measurements of the lava streams from a safe ... -
GISPLIT: High-performance global solar irradiance component-separation model dynamically constrained by 1-min sky conditions
Ruiz-Arias, José Antonio; Gueymard, Christian A. (Elsevier, 2024-01-31)
The separation of global horizontal irradiance (GHI) into its direct and diffuse components is necessary in a variety of applications, most specially in solar energy utilization, where knowledge of direct normal irradiance ... -
Impact of increased resolution on the representation of the Canary upwelling system in climate models
(European Geosciences Union, 2022-11-17)We investigate the representation of the Canary upwelling system (CUS) in six global coupled climate models operated at high and standard resolution as part of the High Resolution Model Intercomparison Project (HighResMIP). ... -
Influence of ion size effects on the electrokinetics of aqueous salt-free colloids in alternating electric fields
Carrique-Fernández, Félix; Ruiz-Reina, Emilio; Arroyo Roldán, Francisco José; Delgado Mora, Ángel Vicente (American Physical Society (APS), 2020)
Electrokinetics is an important tool for the characterization of colloids because of its sensitivity to the electrical properties of particle-solution interfaces. Its rigorous description may require inclusion of the effects ... -
Intercomparison of WRF-chem aerosol schemes during a dry Saharan dust outbreak in Southern Iberian Peninsula
Pino-Carmona, Miguel; Ruiz-Arias, José Antonio; Fernández-Carvelo, Sol; Bravo-Aranda, Juan Antonio; Alados-Arboledas, Lucas (Elsevier, 2024-12-15)
The Iberian Peninsula (IP), where this study is conducted, has experienced an increase of the frequency and intensity of Saharan aerosol dust outbreaks over the latest decades, which may have an impact on its regional ... -
LaCrO3–CeO2-Based Nanocomposite Electrodes for Efficient Symmetrical Solid Oxide Fuel Cells
Zamudio-García, Javier; Porras-Vázquez, José Manuel; Ramírez-Losilla, Enrique; Marrero-López, David (2022-04-05)
La0.98Cr0.75Mn0.25O3−δ–Ce0.9Gd0.1O1.95 (LCM-CGO) nanocomposite layers with different LCM contents, between 40 and 60 wt %, are prepared in a single step by a spray-pyrolysis deposition method and evaluated as both air and ... -
Mean-preserving interpolation with splines for solar radiation modeling
Ruiz-Arias, José Antonio (Elsevier, 2022-11-17)
Interpolation is a fundamental process in solar resource assessment that glues consecutive components of the modeling chain. Most interpolation techniques assume that the interpolating function must go through the interpolation ...