5922 research outputs found
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Fray Luis de Carvajal, antierasmista y teólogo
Full text linkSe ofrece una visión de la labor e importancia como teólogo y humanista del franciscano Luis de Carvajal (Ludovicus Carvaiaulus), centrada en sus propios textos, que se editan, por primera vez, en versión bilingüe (latín y español), con comentarios sobre las diversas cuestiones tratadas (lingüísticas, exegéticas, teológicas, polémica religiosa, escolástica, Artes liberales, gramática, retórica)
A novel method for modeling renewable power production using ERA5: Spanish solar PV energy
No full textThere is a associte freely available dataset resulting from this work: SHIRENDA-PV:
A novel method for modeling renewable power production using ERA5: Spanish solar PV energy. https://doi.org/10.1016/j.renene.2024.122120. DATASET.
https://hdl.handle.net/10953/6725
https://github.com/matrasujaen/SHIRENDAIn this study, a novel methodology for the estimation of solar PV resources at different regional levels was assessed. The method consists of using a machine
learning model over a virtual power plant at the center of the region, having as input ERA5-derived meteorological variables and real installed capacities and generation data. For solar PV capacity factors (CFs) estimates in Spain, the methodology showed a high level of accuracy, with MBE 0.87 for all the analyzed regions. As an application of the proposed methodology, an enhanced open access database of Spanish solar PV energy resources (SHIRENDA PV) was built. This database consists of hourly values of solar PV CFs for the Spanish NUTS 3 regions covering the period of 1990–2020. The analysis of the solar PV energy resources from SHIRENDA PV revealed a mean diurnal CF of 0.467 for the entire period and a notable spatial and interannual variability in the study region, especially during winter. These changes were found mainly driven by the interannual changes in the winter NAO phases and intensities, that can produce changes in CFs of up to +16%/−10% under extreme phases.This study was conducted in the framework the MET4LOWCAR research project (reference PID2019-107455RB-C21/AEI/10.13039/ 501100011033 and PID2019-107455RB-C22/AEI/10.13039/5011 00011033), financed by the Spanish Research Agency. Guadalupe Sánchez-Hernández also thanks the support from UE-Junta de Andalucía co-funded postdoctoral fellowship PAIDI2020-DOC_01110. The authors acknowledge the Spanish TSO Red Eléctrica for yielding actual wind and solar PV generation data
Contribution to probabilistic seismic hazard assessment and its uncertainty for northeastern Algeria
Full text linkThis contribution uses two distinct gridded seismicity models to present a probabilistic seismic hazard assessment for Northeastern Algeria. Both local regional models and the next generation of attenuation (NGA) equations supplied the ground-motion prediction equations (GMPEs) that have been used. A logic-tree approach is applied to depict the epistemic uncertainty, or the uncertainty in the evaluation caused by the lack of knowledge about the model used. Expert judgment associated with the available acceleration recorded data was used to evaluate the weights assigned to each of the distinct GMPEs. In the final stage, the study offers estimated ground-motion parameters for soil classes B, B/C and C (National Earthquake Hazards Reduction Program) with return periods of 475 and 975 years. Along with uniform hazards spectra for the examined soil conditions and return periods, seismic hazard curves for the main cities are also included. Among the computed ground-motion characteristics, the mean horizontal peak ground acceleration values for the B/C soil types in Setif have been estimated to be 0.30 ± 0.05 g and 0.44 ± 0.05 g for the two considered return periods (475 and 975 years), respectively. Using the exceedance and occurrence deaggregation methodologies, for some locations, a deaggregation investigation was also performed in terms of three parameters (magnitude, distance and azimuth) in order to look at how specific sources influenced the hazard level. This has made it possible to identify the earthquake that contributes most in terms of the considered parameters in the specified locations, known as the "control" or "modal" earthquake.J.A.P. acknowledges support for his research from the Spanish Ministry of Science and Innovation under grant number PID2022-136678NB-I00AEI/FEDER,UE
Procesos de formación de arcillas magnésicas y carbonatos en humedales hipersalinos implicados en la fijación ambiental de carbono
No full textEl presente proyecto pretende evaluar los mecanismos de fijación del carbono orgánico en humedales hipersalinos afectados por prácticas agrícolas poco sostenibles a través de la formación y transformación sucesiva de arcillas magnésicas y carbonatos inertes autigénicos. Con este fin, se examinarán aguas, sedimentos y costras formadas sobre tapetes de algas del humedal hipersalino de Laguna Honda situado en un entorno agrícola de olivar mediterráneo andaluz. La evaluación de las variables mineralógicas, geoquímicas, hidroquímicas y geomicrobiológicas que controlan la formación y estabilidad de las fases autigénicas inertes que evitan la emisión de gases de efecto invernader
Educación Digital Crítica en Adolescentes: Impacto de los sesgos en el uso de herramientas digitales (EDICA)
No full textEl proyecto se centra en analizar cómo los adolescentes perciben los sesgos presentes en la inteligencia artificial (IA) y las redes sociales (RRSS), y en desarrollar un programa educativo que los capacite para identificar y mitigar dichos sesgos. El objetivo es fomentar una ciudadanía digital crítica, inclusiva y responsable, abordando problemáticas como la polarización, la perpetuación de estereotipos de género y la desinformación. Se prioriza la educación digital crítica para adolescentes, quienes son especialmente vulnerables a los efectos negativos de estos sesgos.Proyecto presentado a Convocatoria Ministeri
Plan de Gestión de Datos - BIES
No full textPlan de gestión de datos y datasets del Proyecto denominado "Producción de bioenergía a partir de residuos forestales y agrícolas: prevención de incendios y desarrollo sostenible en zonas rurales"Agencia Estatal de Investigación (por conceder
Informe Semanal de Emprendimiento Societario Mercantil en Andalucía, 3(3), 13 - 17 enero 2025
No full textDisponible en formato de revista electrónica en: https://online.fliphtml5.com/ticck/ocjd/El Informe Semanal de Emprendimiento Societario Mercantil en Andalucía surge de la actividad investigadora del Prof. Dr. Alfonso Miguel Márquez García, miembro del Grupo de Investigación UJA “Dirección y Organización para la Competitividad” (SEJ 232) de la Universidad de Jaén, secretario del Observatorio del Ecosistema Emprendedor de Andalucía (OEEA) y socio de la Delegación de SECOT en Jaén con la intención de promover el emprendimiento a través de la difusión semanal de los datos de creación de sociedades mercantiles publicados en el Boletín Oficial del Registro Mercantil (BORME). El Informe Semanal de Emprendimiento Societario Mercantil en Andalucía presenta de forma gráfica y sencilla los datos semanales y acumulados de creación de sociedades mercantiles publicados en el BORME hasta la fecha, desagregados a nivel provincial. El Informe Semanal de Emprendimiento Societario Mercantil en Andalucía pretende ser una herramienta útil para la difusión de la actividad emprendedora societaria en Andalucía y en cada provincia. La publicación semanal en un formato fácil de interpretar de la creación de sociedades mercantiles desarrollada en Andalucía y desagregada a nivel provincial, ofrece a los medios de comunicación y a los responsables de las actividades de promoción del emprendimiento una oportunidad de conocer en tiempo real la actividad emprendedora societaria en su provincia y comunidad, y su evolución, comparada también con el resto de territorios. Los datos aquí ofrecidos no tienen carácter oficial, aunque proceden de una fuente oficial, el Boletín Oficial del Registro Mercantil (https://www.boe.es/diario_borme/). El Registro Mercantil publica datos mensuales de acuerdo a la fecha de inscripción de las empresas. La fecha de publicación en el BORME es siempre posterior, por lo que pueden existir discrepancias dado que en este trabajo se analiza la información publicada diariamente, agregada de forma semanal. Se permite la utilización de los datos, tablas y gráficos citando la procedencia de los mismos. Puede citarlo así: Márquez-García, Alfonso Miguel (2025). Informe Semanal de Emprendimiento Societario Mercantil en Andalucía, 3(3), 13 - 17 enero: 1-5. ISSN: 3020-6502
Performance evaluation of photovoltaic self-consumption systems on industrial rooftops under continental Mediterranean climate conditions with multi-string inverter topology
No full textThis study analyses the performance and grid integration of seven photovoltaic self-consumption systems installed on industrial rooftops under real operating conditions. The analysed systems feature different orientations and peak power capacities, allowing to evaluate their behaviour through different indices and metrics proposed in the IEC 61724 and the literature, such as the Performance Ratio (PR), Final Yield (Yf) or Capacity Utilisation Factor (CUF), among others. Additionally, the interaction of these systems with the load and the electrical grid is examined and proposed, providing a better view of their operation. The results reveal that, although most systems operate close to expectations, with PR, Yf and CUF annual averages of 0.81, 1555.51 h/y and 0.19 respectively, factors such as partial shading, capture losses, and inverter configurations without grid injection affect their efficiency. The proposed Equivalent Capacity Utilisation Yield (YL), Load Ratio Yield (YGL), Load Ratio To Grid Yield (YGL,TG) and Load Ratio From Grid Yield (YGL,FG) are introduced to characterise the interaction between local demand and electrical grid constraints, providing a comprehensive assessment of system performance and grid use. A reduction in the full-load equivalent hours during which the interconnection node operates at its nominal capacity is observed following the integration of rooftop photovoltaic systems, as the values of YGL are consistently lower than those of YL. The results also indicate that the indices and metrics proposed in the literature, together with real data monitoring, are effective tools for evaluating the performance of photovoltaic systems and optimising their integration into electrical grids.The work was supported by the projects oriented towards the ecological transition and the digital transition. (Grant No. TED2021–131137B-I00 (“Aportación a la Transición Ecológica en el sector Industrial a través del Autoconsumo Fotovoltaico”) and “Centro para el Desarrollo Tecnológico Industrial (CDTI)” and “Corporación Tecnológica de Andalucía (CTA)” under the project: “SolAGRO+ . Análisis funcional avanzado predictivo para la mejora de la gestión del mantenimiento de sistemas de autoconsumo solar fotovoltaico en sector de la industria agroalimentaria. The authors also acknowledge the support provided by the Thematic Network 723RT0150 “Red para la integración a gran escala de energías renovables en sistemas electricos (RIBIERSE-CYTED)” financed by the call for Thematic Networks of the CYTED (Ibero American Program of Science and Technology for Development) for 2022. The authors would like to thank the University of Jaén for its support by the programme: “Acción 2. Doctorados en entidades externas comprendida en la “Línea de Actuación: Fomento y divulgación de la transferencia”, enmarcada en el Objetivo 1: “Apoyo a las actividades de trasferencia del conocimiento”, del Plan de Apoyo a la Transferencia del Conocimiento, el Emprendimiento y la Empleabilidad año 2023, para la contratación de doctorandos industriales”
Improved extraction yield in olive oil mill using talc and kaolinitic clay
No full textIn the virgin olive oil industry, the use of physical coadjuvants is sometimes required during the malaxation stage to improve oil separation from the olive paste, thereby increasing the industrial extraction yield. Kaolinitic clay and talc are the only coadjuvants authorized in Spain. In order to prove their effect on the olive paste, the extraction efficiency and the composition of the olive oil, an evaluation of both coadjuvants was carried out in oil mill.
Micronized talc is slightly more effective than kaolinitic clay in improving the virgin olive oil extraction process. Talc has a technological action 130 % higher than clay, although its oil retention capacity is also higher, 37.24 % vs. 16.96 %. To obtain maximum extraction efficiency, the ideal dose of coadjuvant added during malaxation should be low, between 0.5 and 1 %. It should also be noted that the use of coadjuvants does not have a significant effect on the composition of volatile and phenolic compounds, as well as on the quality characteristics of the olive oils obtained like acidity, peroxide index and K270.Department of Economy, Innovation and Science of the Andalusian Regional Government by the financial help provided through Research Project of Excellence PI11- AGR-7726
Next Generation EU funds through “Programa Investigo”
Noticias de emprendimiento societario mercantil en España 20 septiembre 2025
No full textDisponible en Youtube en: https://youtu.be/MMOMmBXC6PsDifusión en formato vídeo del nº 38 del Informe Semanal de Emprendimiento Societario Mercantil en España de 19 de septiembre de 2025