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Dealing with the archaeological invisibility of the Iberian mints: A technological and contextual analysis of the first stone mould for blank coin production found in Hispania
Full text linkBetween the 2nd and 1st centuries BCE, a significant number of mints emerged in the Iberian Peninsula, producing coins either continuously or on an ad hoc basis. Despite the large number of workshops, we have little material evidence of their locations beyond the coins themselves. This leaves many gaps regarding where the mints were located in the topography of ancient towns, the chaîne opératoire, or the social organisation around the workshops. In this study, we present a stone mould for blank coin production found in excavations carried out in the Iberian oppidum of Obulco, modern-day Porcuna (Jaén, Spain). Petrographic analysis has documented the local origin of the raw material used. Use-wear analysis has shown technical marks associated with its use as a coin mould. µ-XRF analysis of the metallic imprints on its surface has confirmed that a binary Cu-Pb alloy was used. This observation fits previous elemental characterisation studies of Obulco coins. The metric analysis of the metallic impressions leads us to propose the production of bronze asses dated to the 2nd century BCE, more specifically between 189/165–146 BCE. Our study has a dual uniqueness: the blank coin mould presented in this paper is the only one found so far in the Iberian Peninsula, and it is one of the few coin production tools documented in archaeological context. This has implications for the understanding of coinage production processes and locative decisions of mints in ancient Hispania, which are traditionally defined by their archaeological invisibility
El origen de las Cortes (1188-1348)
Full text linkRESUMEN EN CASTELLANO
La presente tesis doctoral examina el origen y evolución de las Cortes medievales entre 1188 y 1348, con especial atención a su configuración jurídico-política y su transformación desde la Curia regis. El análisis se centra en los reinos de Castilla y León, incorporando también un enfoque comparado con las Cortes de la Corona de Aragón, destacando su carácter pactista, y con las instituciones representativas de los reinos de Inglaterra y Francia. Esta perspectiva permite identificar similitudes y diferencias entre los modelos asamblearios de representación estamental peninsulares y europeos, así como evidenciar la progresiva convocatoria y participación del estamento urbano en dichos modelos.
RESUMEN EN INGLÉS
This doctoral thesis examines the origin and evolution of the medieval Cortes between 1188 and 1348, with particular attention to their legal and political structure and their transformation from the Curia regis. The analysis focuses on the kingdoms of Castile and León, while also incorporating a comparative approach with the Cortes of the Crown of Aragon, emphasizing their pactist nature, and with the representative institutions of the kingdoms of England and France. This perspective allows for the identification of similarities and differences between Iberian and European models of estate-based representative assemblies, as well as highlighting the gradual summoning and participation of the urban estate within these models
Plan de datos para el proyecto titulado "Impacto de las ayudas visuales prosódicas para la mejora de la fluidez lectora en lectores con y sin dificultades (VIPROLEC)"
Full text link-This plan outlines the approach to process and manage the data following the 'FAIR' principles (Findable, Accessible, Interoperable, and Reusable) for the project: "Impact of prosodic visual aids on improving reading fluency in readers with and without difficulties".
Dataset for "Economic and comparative performance analysis of thin-film grid-connected PV systems in Southern Europe", Energy and Buildings, Volume 349, 2025, 116564, ISSN 0378-7788, https://doi.org/10.1016/j.enbuild.2025.116564
No full textThis dataset contains monitoring data (CSV files) from two thin-film grid-connected PV systems at the University of Jaén (Jaén, Spain) operating over the years 2014 and 2015, along with a readme.txt file explaining how to interpret the CSV files. These data underpin the experimental analysis presented in the following paper:
Fatima Tahri, Ghrissi Tahri, Ali Tahri, Santiago Silvestre, Giuliano Arns Rampinelli, Gustavo Nofuentes, Economic and comparative performance analysis of thin-film grid-connected PV systems in Southern Europe, Energy and Buildings, Volume 349, 2025, 116564, ISSN 0378-7788, https://doi.org/10.1016/j.enbuild.2025.116564Universidad de Jaé
FUNCIONALIZACIÓN DE MATERIALES DE BASE GRAFÉNICA CON RECEPTORES MOLECULARES POR VÍA NO-COVALENTE EN FASE LÍQUIDA: PROGRESOS Y NUEVAS PERSPECTIVAS
Full text linkRESUMEN EN CASTELLANO
Esta tesis aborda la limitada manejabilidad de materiales grafénicos, causada por su auto-agregación y carencia de grupos funcionales. Como alternativa, se propone su funcionalización no covalente mediante interacciones π-π. El objetivo principal ha sido desarrollar estrategias sostenibles para obtener materiales híbridos, compuestos por una matriz grafénica que adsorbe receptores orgánicos en fase líquida. La investigación se ha centrado en: (i)Evaluar la afinidad de diversos receptores moleculares por superficies grafénicas; (ii)Optimizar métodos sostenibles para la síntesis de perileno diimidas; (iii)Desarrollar estrategias de deposición molecular, como la “adsorción transformativa”, que permite generar híbridos
grafeno–perileno dianhidrido y convertirlos en perileno diimidas funcionalizadas mediante post-adsorción, facilitando la incorporación de nuevos grupos químicos. En conjunto, esta tesis propone soluciones eficientes, accesibles y sostenibles que mejoran la funcionalización de grafenos y amplían sus posibilidades de aplicación.
RESUMEN EN INGLÉS
This thesis addresses the limited manageability of graphenic materials, which stems from their self-aggregation and lack of functional groups. As an alternative, non-covalent functionalization via π-π interactions is proposed. The main objective has been to develop sustainable strategies for obtaining hybrid materials, composed of a graphenic matrix that adsorbs organic receptors in the liquid phase. The research has focused on: (i) Evaluating the affinity of diverse molecular receptors for graphenic surfaces; (ii) Optimizing sustainable methods for the synthesis of perylene diimides; (iii) Developing molecular deposition strategies, such as "transformative adsorption," which allows for the generation of graphene-perylene dianhydride hybrids and their conversion into functionalized perylene diimides through post- adsorption, thereby facilitating the incorporation of new chemical groups. Collectively, this thesis proposes efficient, accessible, and sustainable solutions that enhance graphene functionalization and expand its application possibilities
The influence of the environment’s tax morale on corporate tax avoidance
Full text linkWe explore the impact of a country’s tax morale —defined as the intrinsic motivation and social norms that promote tax compliance— on corporate tax avoidance for both domestic firms and multinational corporations (MNCs). Our findings reveal that a strong tax morale environment deters tax avoidance for domestic companies. Moreover, our results indicate that the negative relationship between tax morale and tax avoidance is driven primarily by managers’ own tax morale rather than reputational concerns. For MNCs, our results reveal a more complex relationship between tax morale and income-shifting practices: While strong tax morale in the subsidiaries’ countries is associated with less income-shifting practices, parent companies headquartered in high-tax-morale countries engage more in these practices, possibly to bypass stricter norms at home. This study contributes to the literature by showing that tax morale plays a critical role in shaping corporate tax behavior, offering insights for policymakers on the importance of cultural and social contexts in reducing tax avoidance.This work is supported by the Spanish Ministry of Science and Innovation under Grant PID2021-124494NB-I00
OrganoCat fractionation of vine shoots for coproduction of bioethanol, furfural, and lignin
Full text linkVine shoots were treated with the OrganoCat method. Water and 2-methyltetrahydrofuran (1:1) and oxalic acid (0.1 M) were used at 140 °C for three hours. Three components were obtained: an undissolved pulp, an aqueous solution, and a solid obtained by evaporating the organic phase. The pulp was enriched in cellulose with a higher crystallinity than the original material because the amorphous part had dissolved. This pulp was more readily enzymatically digested than the untreated raw material used with high solid loading conditions, resulting in a substantially higher glucose content of close to 70 g/L in the enzymatic medium. This solid was a suitable substrate for ethanol production with levels of 35 g/L in this study. Pure lignin was obtained from the organic phase, and the hemicellulose-derived sugars present in the aqueous phase were interesting sources of furfural formed from xylose in a microwave reactor (64% yield) and ethanol formed from glucose (98% yield) by fermentation. Overall, the OrganoCat process is a promising pretreatment method for fractionating vine shoots, and lignin and sugars were recovered from cellulose and hemicellulose and converted into valuable renewable products
A preliminary seismic hazard study terms of Arias Intensity in eastern Egypt: insights into its seismically-induced landslide potential
Full text linkArias intensity value is the best recognized parameter for dynamic slope stability studies and liquefaction potential. The reason is that the Arias intensity, an instrumental measure of the intensity, that is, based on acceleration records, is a real measure of the energy absorbed by the ground during an earthquake, including both the acceleration values, the shake duration and all frequencies included in the recorded motion. With this goal, specially the assessment of the seismically induced landslide potential, a preliminary probabilistic seismic hazard assessment in terms of this parameter is conducted for the first time in Egypt. Although Egypt is a country with a gentle topography, the Red Sea and Southern Sinai mountains, in its eastern part, stand out for their elevations, making them areas with a relatively high landslide potential. The computed probabilistic Arias intensity values are based on a previous used seismicity model. From available ground-motion prediction equations for this parameter, and using a logic-tree scheme in order to account for uncertainties, probabilistic Arias intensity values have been obtained for two different return periods. Results are quite in agreement with previous assessments in terms of mean peak ground acceleration, that is, areas with greater peak ground acceleration values agree with areas with greater Arias intensity values. For both return periods of 475 and 975 years, the areas that stand out for the Arias intensity values are the Aswan region and the Gulf of Aqaba. With lower hazard values they can also stand out the Gulf of Suez—Cairo region, and a nucleus in the western coast of the Red Sea, near the city of Marsa Alam. In all cases, significant earthquakes in the historical and instrumental periods are what generate the obtained hazard values. Consequently, these areas are shown as those in which the future probability of occurrence of ground instabilities is greater. Some of these areas could host disrupted landslides, coherent slides and even flows and lateral spreading instabilities under suitable weather conditions
Olive polyphenols as modulators of amyloid aggregation: mechanisms and implications for neurodegenerative diseases
Full text linkThe Mediterranean diet is well known for its role in promoting healthy aging and reducing the risk of chronic diseases, with extra virgin olive oil (EVOO) recognized as a key contributor to these benefits. Among EVOO's constituents, minor phenolic compounds have emerged as principal mediators of its biological activity. Given the pivotal role of amyloid aggregation in protein misfolding disorders (PMDs), considerable research over the past two decades has focused on amyloidogenic proteins and the discovery of natural compounds capable of modulating their aggregation. This review summarizes current evidence on the anti-amyloidogenic properties of olive-derived polyphenols, emphasizing their mechanisms of action and therapeutic relevance in two major neurodegenerative diseases, Alzheimer's and Parkinson's. Additionally, insights from molecular modeling studies are discussed to elucidate the structural basis of interactions between these polyphenols and amyloid proteins, shedding light on their influence on aggregation pathways
Least-Squares Linear Estimation for Multirate Uncertain Systems subject to DoS Attacks
Full text linkThis paper investigates the least-squares linear estimation problem for multirate systems with stochastic parameter matrices, under the influence of random denial-of-service (DoS) attacks. These attacks can severely impair the performance of estimation algorithms by causing intermittent loss of mea- surement data. To counteract the adverse effect of DoS attacks, two compensation strategies –hold-input and prediction compensation– are used. For each of these strategies, specific recursive filtering and smoothing algorithms are designed. A key advantage of the proposed methodology is its ability to oper- ate without requiring a detailed signal evolution model, relying only on the mean and covariance func- tions of the involved processes. The effectiveness of the proposed approaches is validated through numerical simulations, which highlight how common network-induced phenomena, such as missing observations, can be incorporated into the framework of systems with random parameter matrices and, additionally, they provide insights into estimation performance under different attack probabilities.Grant PID2021-124486NB-I00 funded by MICIU/AEI/10.13039/501100011033 and ERDF/EU