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Adolescent rhetoric on migration in the province of Huelva
No full textPartiendo de una investigación previa sobre disponibilidad léxica llevada a cabo con alumnado adolescente de un instituto de educación secundaria de la provincia de Huelva, este artículo
analiza los componentes retóricos de los vocablos sobre cuestiones migratorias generados mediante dicha investigación, así como las percepciones sociales y los discursos sobre la alteridad
subyacentes. Para ello, se ha recogido todo el léxico, que constituye un corpus superior a las 200
palabras, y se han realizado varias clasificaciones, tanto retóricas como de frecuencia de aparición.
Del análisis de estas clasificaciones se desprende que el estudiantado concibe la migración como
un proceso estereotipado, debido a una situación socioeconómica precaria en el país de origen,
que sitúan en el entorno africano. Esto se ha relacionado con la construcción de identidades colectivas y de imaginarios en torno al «otro» a la par que se proponen mecanismos que, desde las
mismas instituciones educativas, permitan construir discursos alejados de visiones prejuiciosas y
estereotípicasBased on previous research on lexical availability conducted with secondary education students in
the province of Huelva, this paper analyses the rhetorical components of the vocabulary related to
migration issues produced through that previous research, as well as underlying social perceptions
and discourses on alterity. For that purpose, all the lexicon has been collected, which constitutes a
corpus of over 200 words, and several classifications have been made, both rhetorical and frequency-based. The analysis of these classifications reveals that students perceive migration as a stereotyped process due to a precarious socioeconomic situation in the country of origin, which they
associate with the African context. This has been related to the construction of collective identities and imagination around the “other” while proposing mechanisms that, from within educational
institutions, allow for the construction of discourses free from prejudiced and stereotypical viewsFilologí
Temporal dynamics of contaminants in an estuarine system affected by acid mine drainage discharges
No full textThe estuary of Huelva is constituted by the common mouth of the Odiel and Tinto rivers, which are extreme cases of acid mine drainage contamination due to the Iberian Pyrite Belt, the world’s largest sulfide mineral province. The drained acidic waters are subjected to seawater mixing and thus, to dilution and precipitation processes that drive the load of contaminants entering the oceanic environment. This research reports the distribution of major metal(loid)s present in the highly acidic waters across the entire Tinto and Odiel estuarine systems as they are subjected to acid mine drainage neutralization, until reaching the ocean. The datasets presented are divided in low- and high-flow periods, corresponding to dry/warm and wet/cold seasons, respectively. Iron and Al were
almost entirely removed from solution with pH increase at both periods due to their precipitation as schwertmannite and basaluminite, respectively. These mineral phases also, controlled the behavior of As, Cu and Pb, which were removed from solution, with >90 % of their concentration ending up in the particulate phase due to sorption processes. However, at pH >7, As returned entirely to the dissolved phase at both sampled seasons because of desorption, similarly to Cu at the low-flow period. On the other hand, concentrations of Zn, Cd, Mn, Co and Ni in solution decreased only by dilution with seawater, with null partitioning to any sorption processes during estuarine mixing until reaching the Atlantic Ocean.This work was supported by the research project TRAMPA (PID2020-119196RBC21) funded by MCIN/AEI/10.13039/501100011033. Dr. M. Giampouras acknowledges the ‘Juan de la Cierva e Formacion’ (FJC2021-048014-I) Fellowship funded by MCIN/AEI/10.13039/501100011033. L. Sánchez-López acknowledges the “Formación de Personal Investigador” grant (PRE2021-097651) funded by MCIN/AEI/10.13039/501100011033. M. D. Basallote thanks the Regional Government of Andalusia for the EMERGIA grant (EMC21_00363) and MCIN for the RYC2022-035326-I grant funded by MCIN/AEI/10.13039/501100011033 and FSE+. C.R Cánovas thanks the Spanish Ministry of Science and Innovation for the Postdoctoral Fellowship granted under application reference RYC2019-027949-I funded by MCIN/AEI/10.13039/501100011033. Universidad de Huelva/CBUA is acknowledged for funding the open access charge.Ciencias de la Tierr
Weighing hierarchical power and active contribution in cooperative games with authorization structure
No full textCooperative games model situations in which a group of players work together to
make a profit. Frequently, in cooperative situations there are dependency or hierarchical
relationships between the players, which must be taken into account when
allocating the common profit obtained by the grand coalition. Multiple structures
have been used in the literature to model those relationships, and several values have
been proposed, but there is something in common in all of them: if a player can veto
the participation of another in any coalition, then both players will receive the same
share of the profit derived from the active cooperation of the vetoed player. In other
words, actively cooperating and giving permission to cooperate are equally valued.
In many situations this is neither fair nor realistic. In this paper we introduce a family
of allocation rules for cooperative games with authorization structure, which
reward positional power less than active cooperation.Funding for open access publishing: Universidad de Sevilla/CBUA.
Support of the Ministerio de Ciencia, Innovación y Universidades, grant PID2022-138956NB-I00.Ciencias Integrada
Los curas del mar en el tardofranquismo y la transición política: su participación en los conflictos del sector pesquero en la costa de Huelva
No full textEste artículo se aproxima al papel desempeñado por un grupo de curas vinculados al Apostolado del Mar de Huelva en el proceso de cambio político durante el tardofranquismo y la transición, sus acciones de lucha por la democracia y su influencia en la concienciación política y sindical de los trabajadores del mar en la costa onubense. Hilvanando métodos y técnicas etnográficas e historiográficas como las entrevistas, la historia de vida y la labor de documentación archivística, analizamos cómo un grupo de sacerdotes fueron testigos y protagonistas de la lucha sindical y por la democracia en una de las zonas más empobrecidas del Estado español. Su lucha por las condiciones de vida digna y la defensa de los intereses de clase de marineros y pescadores fue su manera de vivir el mensaje evangélico en el seno de una Iglesia dividida y su forma de enfrentar las estructuras políticas y sindicales del régimen franquista.Historia, Geografía y Antropologí
Clima motivacional e intención de seguir siendo activo en estudiantes de grado medio de actividades físico-deportivas
No full textDidácticas Integrada
The role of pristine carbon nanotubes as nanocarriers of 7,8-dihydroxyflavone
No full textFlavonoids are secondary plant metabolites with a wide range of pharmacological effects. Among others, their antioxidant, anti-inflammatory and vasoprotective actions are noteworthy. However, the low bioavailability of flavonoids limits their direct clinical use. Nanoencapsulation of flavonoids is an effective tool to improve their biopharmaceutical characteristics, as the drug is protected inside the nanocarrier and specifically released into the therapeutic target. Bearing this in mind, pristine single- and multi-walled carbon nanotubes have been studied in this work as nanocarriers of 7,8-dihydroxyflavone, 7,8-DHF. Flavone encapsulation is optimized according to the influence of pH, the type of CNTs and their concentration on the association process. The equilibrium binding constants of 7,8-DHF to the CNTs are determined by measuring the variation observed in the flavone absorbance when the concentration of carbon nanotubes increases. CNTs/flavone complexes are characterized by particle size distribution and Z-potential measurements, as well as Transmission Electron Microscopy. The antioxidant capacity of free 7,8-DHF and the CNTs/7,8-DHF complexes are estimated by using the DPPH⋅, 2,2-diphenyl-1-picrylhydrazyl radical scavenging method. The results show that the encapsulation of the flavone in the CNTs results in a preservation of its pharmacological properties and provides stability to the encapsulated drug.This research was funded by the Consejería de Educaci´ on y Ciencia de la Junta de Andalucía (FQM-206 and FQM-274), the European Union (Feder Funds), and the Project PAIDI P20-01234.
Funding for open access charge: Universidad de Huelva / CBUAIngeniería Química, Química Física y Ciencias de los Materiale
Tectónica activa en formaciones marinas cuaternarias en la región de Tánger (Noroeste de Marruecos): Contribución de la técnica PSInSAR
No full textThis study investigates recent tectonic activity in Tangier, Morocco, using PSInSAR data and microtectonic field observations.
The exploration of marine deposits in the Achakar basin during the
Plio-Quaternary period holds significance for tracking the recent
geodynamic changes in the study area. Microtectonic analysis revealed a shift from a NE-SW compressive regime in the Late Pliocene
to a Quaternary regime dominated by a NE-SW extension regime
and a NW-SE compressive regime. PSInSAR detected ground displacement rates ranging from subsidence (-4.9 mm/yr) to uplift (4.9
mm/yr) during the study period (2018-2021)Este estudio investiga la actividad tectónica reciente en Tánger,
Marruecos, utilizando datos de PSInSAR y observaciones de campo
microtectónicas. La exploración de depósitos marinos en la cuenca
de Ashokan durante el período Plio-Cuaternario tiene importancia para rastrear los cambios geodinámicos recientes en el área de
estudio. El análisis microtectónico reveló un cambio de un régimen
de compresión NE-SO en el Plioceno tardío a un régimen cuaternario dominado por un régimen de extensión NE-SO y un régimen
de compresión NW-SE. PSInSAR detectó tasas de desplazamiento
del suelo que oscilaron entre hundimiento (-4,9 mm/año) y levantamiento (4,9 mm/año) durante el período de estudio (2018-2021
Masculinity and Ethnocentrism: Hernán Cortés
No full textLa conquista de América significó el inicio del periodo histórico conocido como modernidad, generando jerarquías sociales y raciales. Se generaron nuevas identidades de género: una pretendida masculinidad hegemónica europea enfrentada a masculinidades inferiorizadas indígenas y afrodescendientes. Además de conformarse una jerarquía social basada en la figura del conquistador.The conquest of America meant the beginning of the historical period known as modernity, social and racial hierarchies. New gender identities were generated: an alleged European hegemonic masculinity faced with inferiorized indigenous and Afro-descendant masculinities. In addition to conforming a social hierarchy based on the figure of the conqueror.Filología Ingles
The accounting as a means of evidence to prove the prescription of the presumed income derived from the recording of a non-existent debt
No full textEn el presente trabajo se analizan las consecuencias de la aplicación de la presunción que permite derivar una renta del descubrimiento del registro contable de una deuda inexistente. En particular, se analiza la reciente jurisprudencia que ha considerado que la contabilización no controvertida de dicha deuda en un periodo prescrito es un medio de prueba válido para que el contribuyente pueda demostrar que la renta presunta se debe imputar también a dicho periodo prescrito.This paper analyses the consequences of applying the presumption that allows to derive income from the discovery of an inexistent debt in accounting records. In particular, we examine recent case law that has deemed that the uncontested recording of such debt in a prescribed period is a valid means of evidence for the taxpayer to demonstrate that the presumed income must also be attributed to that prescribed period.Derecho Público y del Trabaj