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Breakup of 8B+natZr at the sub-barrier energy of 26.5 MeV
Get PDFIn our systematic research on reactions with weakly bound nuclei at sub- and near- barrier energies, we have studied the system 8B+natZr at the sub-barrier energy of 26.5 MeV. Our measurements, performed at the TriSol radioactive beam facility of the University of Notre Dame, include angular distributions of both elastic scattering and breakup, for the determination of the total reaction and breakup cross sections as well as the direct-to-total reaction cross section ratio. Preliminary results of the breakup analysis will be presented, supported by Continuum Discretized Coupling Channel calculationsK. Palli acknowledges the support by the Hellenic Foundation for Research and Innovation (HFRI) under the 4th Call for HFRI Ph.D. Fellowships, Grant No. 009194Ciencias de la Tierr
Advanced interpenetrating polymer networks for innovative gastroretentive formulations targeting Helicobacter pylori gastric colonization
Get PDFThe escalating challenges of Helicobacter pylori-induced gastric complications, driven by rising antibiotic resistance
and persistent cancer risks, underscore the demand for innovative therapeutic strategies. This study addresses
this urgency through the development of tailored semi-interpenetrating polymer networks (semi-IPN)
serving as gastroretentive matrices for amoxicillin (AMOX). They are biodegradable, absorb significant volume of
simulated gastric fluid (swelling index > 360 %) and exhibit superporous microstructures, remarkable
mucoadhesion, and buoyancy. The investigation includes assessment at pH 1.2 for comparative analysis with
prior studies and, notably, at pH 5.0, reflecting the acidic environment in H. pylori-infected stomachs. The semi-
IPN demonstrated gel-like structures, maintaining integrity throughout the 24-hour controlled release study, and
disintegrating upon completing their intended function. Evaluated in gastroretentive drug delivery system performance,
AMOX release at pH 1.2 and pH 5.0 over 24 h (10 %-100 %) employed experimental design methodology,
elucidating dominant release mechanisms. Their mucoadhesive, buoyant, three-dimensional scaffold
stability, and gastric biodegradability make them ideal for accommodating substantial AMOX quantities.
Furthermore, exploring the inclusion of the potassium-competitive acid blocker (P-CAB) vonoprazan (VONO) in
AMOX-loaded formulations shows promise for precise and effective drug delivery. This innovative approach has
the potential to combat H. pylori infections, thereby preventing the gastric cancer induced by this pathogen.This research was funded by MICIU/AEI/10.13039/501100011033, grant number PID2020-115916GB-I00.Ingeniería Química, Química Física y Ciencias de los Materiale
Podcast: uma experiência inovadora de ensino-aprendizagem para pessoas adolescentes do ensino médio de Antofagasta refletirem sobre suas vivências pós-COVID
Get PDFEste artículo presenta una experiencia docente de buenas prácticas e innovación que explora el uso
del pódcast como una estrategia pedagógica en el proceso de enseñanza-aprendizaje. La experiencia consistió
en la creación de varios pódcast por parte de las personas estudiantes de octavo año básico de la ciudad de
Antofagasta en Chile, permitiéndoles expresar sus experiencias y reflexiones tras el confinamiento por COVID-19.
La metodología se implementó a través de un taller extraescolar voluntario, realizado intensivamente del 7 al
11 de noviembre de 2022. Las personas estudiantes no solo debían conocer los elementos que componen el
lenguaje radial para crear pódcast, sino que también debían aprender a editar sus producciones radiofónicas,
escuchar y comentar en grupo sus pódcast, con la finalidad de que pudieran comprender la utilidad de este
formato en sus propios procesos. De ese modo, ellos se familiarizaron con el formato radial, crearon guiones,
grabaron, editaron y escucharon sus propias producciones, que resultaron en nueve pódcast. A pesar de que
los temas iniciales experimentaron variaciones, la actividad fue valorada positivamente por el estudiantado, lo
que confirmó su efectividad. Por tanto, esta experiencia se convirtió en un aporte significativo para el cambio
educativo, proporcionando a las personas estudiantes una nueva herramienta para producir sus propios contenidos.
Lo anterior permite concluir que esta herramienta puede ser utilizada como recurso tanto por docentes
como por el alumnado, a partir de un proceso de planificación didáctica. Sin embargo, es crucial tener en cuenta
que los pódcast deben ser impulsados por la motivación intrínseca de las personas estudiantes, evitando una
perspectiva externa y adultocéntricaThis article presents a teaching experience based on good practice and innovation that explores
the use of podcasts as a pedagogical strategy in the teaching-learning process. The experience consisted of a
series of podcasts created by eighth grade students from the city of Antofagasta, Chile, in which they shared
their experiences and reflections after the COVID-19 confinement. The methodology was implemented during
an intensive and voluntary extracurricular workshop that took place from 7 to 11 November 2022. The students
learned all the elements that make up the radio language to create podcasts. They also learned how to edit their
radio productions and listened to and commented on their podcasts in groups to understand the usefulness
of this format in their own processes. In this way, they became familiar with the radio format, created scripts,
recorded, edited and listened to their own productions. The result was nine podcasts. Although the initial topics
varied, the activity was positively evaluated by the students, confirming its effectiveness. It is therefore a significant
contribution to pedagogical change, providing students with a new tool to produce their own content.
From this experience it can be concluded that this tool can be useful for both teachers and students, provided
that it is based on a didactic planning process. It is crucial to bear in mind that the podcasts must be driven by
the students’ intrinsic motivation, avoiding an external and adult-centred perspectiveEste artigo apresenta uma experiência docente de boas práticas e inovação que explora o uso de
podcasts como estratégia pedagógica no processo de ensino-aprendizagem. A experiência consistiu na criação
de vários podcasts por pessoas estudantes do oitavo ano da cidade de Antofagasta, no Chile, permitindo-lhes
expressar as suas experiências e reflexões após o confinamento devido à COVID-19. A metodologia foi implementada
por meio de um workshop extracurricular voluntário, realizado de forma intensiva de 7 a 11 de novembro
de 2022. As pessoas estudantes não só tiveram que conhecer os elementos que compõem a linguagem radial
para criar podcasts, mas também aprender a editar as suas produções radiofônicas, ouvir e comentar seus podcasts
em grupo, para que pudessem compreender a utilidade desse formato em seus próprios processos. Dessa
forma, se familiarizaram com o formato radial, criaram roteiros, gravaram, editaram e ouviram as suas próprias
produções, que resultaram em nove podcasts. Embora os temas iniciais tenham sofrido variações, a atividade foi
valorizada positivamente pelo estudante, o que confirmou a sua eficácia. Portanto, esta experiência tornou-se
uma contribuição significativa para a mudança educativa, proporcionando às pessoas estudantes uma nova
ferramenta para produzir seus próprios conteúdos. O exposto permite concluir que esta ferramenta pode ser
utilizada como recurso tanto por docentes quanto pelo aluno, a partir de um processo de planejamento didático.
No entanto, é fundamental ter em mente que os podcasts devem ser movidos pela motivação intrínseca das
pessoas estudantes, evitando uma perspectiva externa e centrada no adultoPedagogíaG.I. Ágora, Grupo de Estudios e Investigaciones Educativas en Tecnologías de la Comunicación, Orientación e Intervención Sociocultural (HUM 648
Submission and autonomy: political commitment in the early days of journalism in Colombia and Ecuador
No full textEn el siglo XVIII, dos publicaciones en Santafé de Bogotá y Quito ejercieron el periodismo en procura del bien común y la prosperidad de dichos territorios, gobernados en ese entonces por España. Objetivos: El presente estudio examinó la construcción social de realidad en 84 artículos del Papel Periódico de Santafé de Bogotá y 19 de Primicias de la Cultura de Quito, entre diciembre de 1791 y marzo de 1792. Metodología: Se aplicaron conceptos asociados a la agenda-setting y el newsmaking para estudiar los temas tratados y las intencionalidades discursivas de los editores. Resultados: Se estableció que los dos periódicos tienen miradas distintas del entorno sociopolítico, pero coinciden en la necesidad de la cultura, la educación, la ciencia y la economía como factores de cambio. Discusión: El estudio reveló aspectos comunes a la prensa de todos los tiempos como la lectura de la realidad desde instancias de poder que definen sus posiciones ideológicas y editoriales. Conclusión: Mientras el Papel Periódico proyecta sus ideas desde la institucionalidad, Primicias de la Cultura de Quito lo hace desde el “orgullo quiteño” reflejando intenciones de autonomía política, económica y culturalIn the 18th century, two publications in Santafé de Bogotá and Quito exercised journalism in pursuit of the common good and prosperity of those territories ruled by Spain at the time. Objectives: The present study examined the social construction of reality in 84 articles of Papel Periódico de Santafé de Bogotá and 19 of Primicias de la Cultura de Quito between December 1791 and March 1792. Methodology: Concepts associated with agenda-setting and newsmaking were applied to study the topics covered and the discursive intentions of the editors. Results: It was established that the two newspapers have different views of the sociopolitical environment but coincide in the need for culture, education, science, and economy as factors of change. Discussion: The study revealed common aspects to the press throughout all times, such as interpreting reality from positions of power that define their ideological and editorial stances. Conclusion: While Papel Periódico projects its ideas from institutionalism, Primicias de la Cultura de Quito does it from “Quito pride”, reflecting intentions of political, economic, and cultural autonomyDidácticas IntegradasHistoria, Geografía y Antropologí
A Versatile Platform for PV System Integration into Microgrids
Get PDFAdvancing decarbonization critically depends on the integration of PV systems into microgrids.
However, this integration faces challenges, including the variability of photovoltaic solar
energy production, the demands of energy management, and the complexities of grid synchronization
and communication. To address these challenges, a PV emulator platform is an essential tool. This
paper presents a novel four-layer PV emulator platform that seamlessly integrates power systems,
control systems, measurement instrumentation, and communication processes. The proposed platform
enables the emulation of I-V curves and the dynamic adjustment of operating points—including
both the maximum power point (MPP) and power reserve point (PRP)—as well as temperature
and irradiance while providing sufficient power capacity for microgrid integration. To validate its
effectiveness, the platform was assessed for its capability to adjust operating points, such as MPPs
or PRPs, under varying irradiance and temperature conditions. The results show that the platform
effectively adjusts operating points with a deviation of less than 5% from theoretical values and
successfully tracks a sequence of operating points. This performance underscores the platform’s
potential in integrating and managing PV systems within microgrid environments, thereby advancing
the path to decarbonization.This paper is part of the project “Integral control system to optimize the microgrids energy demand”, grant number PID2020-117828RB-I00, funded by the Spanish Ministry of Science, Innovation and Universities. The author Gabriel Gómez-Ruiz is enjoying an FPU grant, number FPU21/00468, funded by the Spanish Ministry of Science, Innovation and Universities for the training of university teaching staff during his PhD period. The author Jesús Clavijo-Camacho has benefited from an INVESTIGO research fellowship funded by the European Union-NextGenerationEU.Ingeniería Eléctrica y Térmica, de Diseño y ProyectosIngeniería Electrónica, de Sistemas Informáticos y Automátic
Teachers' tolerance to ambiguity: A systematic review
Get PDFIntroducción: La globalización y la movilidad humana han enriquecido la diversidad en las
aulas, planteando desafíos para los educadores en contextos multiculturales y multilingües.
Este artículo explora el papel crucial de la tolerancia a la ambigüedad en la enseñanza de
idiomas, examinando la preparación de los maestros para manejar la incertidumbre
lingüística. Metodología: A través de una revisión documental sistemática, se investiga la
relación entre la tolerancia a la ambigüedad de los educadores y el éxito en el aprendizaje de
idiomas de los estudiantes. Se seleccionaron y analizaron detalladamente las fuentes
bibliográficas seleccionadas para identificar temas, enfoques metodológicos y hallazgos
relevantes. Resultados: Los resultados revelan una asociación positiva entre la tolerancia a la
ambigüedad de los maestros y el rendimiento lingüístico de los estudiantes. Se destaca la
importancia de integrar la tolerancia a la ambigüedad en la formación docente y en las
prácticas pedagógicas, subrayando su impacto en el desarrollo profesional y en la calidad del
proceso educativo. Discusión y Conclusión: De este modo, se enfatiza la necesidad de
promover un enfoque adaptativo y flexible en la enseñanza de idiomas, preparando a los
maestros para enfrentar los desafíos de la diversidad lingüística con confianza y eficacia.Introduction: Globalisation and human mobility have enriched diversity in classrooms, posing challenges for educators in multicultural and multilingual contexts. classrooms, posing challenges for educators in multicultural and multilingual contexts.
This article explores the crucial role of tolerance of ambiguity in language teaching, examining teachers' preparedness to handle ambiguity in the classroom. language teaching, examining teachers' preparedness to handle linguistic uncertainty.
linguistic uncertainty. Methodology: Through a systematic desk review, we investigate the relationship between educators‘ tolerance of ambiguity and students’ language learning success. language learning success of students. Selected literature sources were selected and analysed in detail to identify issues selected literature sources were selected and analysed in detail to identify relevant themes, methodological approaches and findings. findings. Results: The results reveal a positive association between teachers‘ tolerance of ambiguity and students’ language learning success. teachers‘ tolerance of ambiguity and students’ language performance. It highlights the importance of integrating tolerance of ambiguity into teacher training and pedagogical practices, highlighting the practices, underlining its impact on professional development and the quality of the educational process. the quality of the educational process. Discussion and Conclusion: Thus, the need to promote an adaptive and flexible approach to language teaching, preparing teachers to face the challenges of teachers to face the challenges of linguistic diversity confidently and effectively.Introduction : La mondialisation et la mobilité humaine ont enrichi la diversité dans les salles de classe, posant des défis aux éducateurs dans des contextes multiculturels et multilingues.
Cet article explore le rôle crucial de la tolérance à l'ambiguïté dans l'enseignement des langues, en examinant la préparation des enseignants à faire face à l'incertitude linguistique.
incertitude linguistique. Méthodologie : une analyse documentaire systématique a permis d'étudier la relation entre la tolérance à l'ambiguïté des éducateurs et la réussite de l'apprentissage des langues par les étudiants. Les sources documentaires sélectionnées ont été choisies et analysées en détail afin d'identifier les thèmes, les approches méthodologiques et les résultats pertinents. Résultats : les résultats révèlent une association positive entre la tolérance à l'ambiguïté des enseignants et la réussite linguistique des élèves. L'importance de l'intégration de la tolérance à l'ambiguïté dans la formation des enseignants et les pratiques pédagogiques est mise en évidence, soulignant son impact sur le développement professionnel et la qualité du processus éducatif. Discussion et conclusion : l'étude souligne donc la nécessité de
promouvoir une approche adaptative et flexible de l'enseignement des langues, en préparant les enseignants à relever les défis de la diversité linguistique avec confiance et efficacité.Esta publicación es parte del proyecto de I+D+i Multiliteracies for adult at-risk learners of additional languages (MultiLits), REF. PID2020-113460RB-I00, financiado por MCIN/ AEI/10.13039/501100011033/Filologí
Palynological analysis of the Roman city of Arucci Turobriga (SW Iberian Peninsula)
Get PDFUna de las aplicaciones más frecuentes de la Palinología es la reconstrucción paleoambiental de antiguos
asentamientos arqueológicos, basada a menudo en la comparación con análogos modernos. En este trabajo
se presenta un análisis de los registros de polen y esporas asociados al complejo termal de Arucci Turobriga,
una ciudad romana (siglos I BCE-III CE) situada en el suroeste de España. El registro polínico representa un
entorno constituido principalmente por encinares y alcornocales y fresnedas como vegetación de ribera, a los
que acompañan pinos y acebuches, así como matorrales de coscojares, lentiscares, jarales y retamares. Por
su abundancia durante el periodo de desarrollo de la ciudad, algunas especies podrían haber sido utilizadas
como recursos forestales, agrícolas u ornamentales, como sería el caso de las especies de Cupressaceae y
de Pinus, así como del olivo, el algarrobo y el avellano. El cortejo de especies herbáceas representa una flora
ruderal, probablemente asociada a enclaves antropizados, dado el gran número de especies nitrófilas que
incluye. El registro de esporas está dominado por hongos parásitos (principalmente tipo Ustilago y tipo Puccinia)
y hongos micorrícicos (principalmente Glomeromycota p.p. y tipo Glomus). Por otro lado, la presencia
de esporas de hongos coprófilos corrobora la identificación de una letrina en el sector norte de las termas
de la ciudadOne of the most frequent applications of palynology is the palaeoenvironmental reconstruction of ancient archaeological
settlements, often based on comparison with modern analogues. This paper presents an analysis
of the pollen and spore records associated with the thermal complex of Arucci Turobriga, a Roman city (1st
century BCE-3rd century CE) located in southwestern Spain. The pollen record represents an environment
consisting mainly of holm oak and cork oak groves and ash groves as riparian vegetation, accompanied by pine
and wild olive trees, as well as thickets of kermes oak, mastic, rockrose and broom. Due to their abundance
during the period of the town’s development, some species could have been used as forestry, agricultural or
ornamental resources, such as Cupressaceae and Pinus species, as well as olive, carob and hazel trees. The
group of herbaceous species represents a ruderal flora, probably associated with anthropised enclaves, given
the large number of nitrophilous species it includes. The spore record is dominated by parasitic fungi (mainly
Ustilago type and Puccinia type) and mycorrhizal fungi (mainly Glomeromycota p.p. and Glomus type). On
the other hand, the presence of spores of coprophilous fungi corroborates the identification of a latrine in
the northern sector of the city’s hot springsEste trabajo ha sido financiado por el Proyecto
“La ciudad de Arucci (Aroche, Huelva)” de
la Consejería de Cultura, Turismo y Deporte
de la Junta de Andalucía. Es una contribución
al Centro de Investigación en Patrimonio Histórico,
Cultural y Natural (CIPHCN) de la Universidad
de Huelva y al Campus de Excelencia
Internacional CEIMARCiencias de la TierraCiencias IntegradasFilologíaHistoria, Geografía y Antropologí
Valorisation of Metallurgical Waste for Inorganic Pigments Production
Get PDFFour industrial wastes, namely, tionite (T), iron grit (IG), electroplating sludge (ES), and mill scale (MS), are typically
disposed of in controlled hazardous landfills because of their toxic content, posing potential harm to human health and
to the environment. At the same time, the chemical composition of these wastes, specifically the nature and content of
transition metals, makes them potentially attractive for reuse in pigments manufacturing. This work details the study of
these residues for producing coloured perovskites to be tested as inorganic pigments. The residues were mixed, in different
proportions, and subsequently calcined to produce the required structures. The colouring potential was then assessed
in a ceramic paste and in a transparent glaze. Leaching tests were carried out to verify the effective immobilisation of
the hazardous species. Dark pigments were successfully obtained from the mixtures of T: ES: Co3O4, T: MS and T: IG.
The crystalline phases present in T: ES: Co3O4 are nickel–chromium iron oxide spinel–Fe1.5Cr0.5NiO4 (without Co) or
trevorite–Fe2NiO4 (with Co), titanium nickel oxide–TiNiO3 and titanite–CaTiSiO5. The mixtures T: MS and T: IG presented
hematite (Fe2O3) and pseudobrookite (Fe2TiO5). Leaching tests confirmed the non-hazardous or inert character of
the synthesized pigments. Products showed brownish or greyish hues, depending on the pigment added. T:75ES_1100,
T:73ES:2Co_1100, T:75MS_1000, T:75MS_1100 and T:75IG_1000 pigments can effectively and safely be used to colour
ceramic paste replacing partially or totally the commercial pigmentsThe authors gratefully acknowledge Huelva University for providing the waste and the collaboration with the Department of Materials Engineering of the University of Aveiro, Portugal.
João Carvalheiras (SFRH/BD/144562/2019) wish to thank Fundação
para a Ciência e Tecnologia (FCT) for supporting their work.
This work was developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020,
UIDP/50011/2020 & LA/P/0006/2020, financed by national funds
through the FCT/MCTES (PIDDAC) and it has been also funded by
the project ENFRIMA (UHU-202020).
Open access funding provided by FCT|FCCN (b-on)Ciencias Integrada
Associating with the Right Folk. Text and Strategies of Self-Promotion in Vida by Torres Villarroel
Get PDFLa edición de la Vida de Diego Torres Villarroel impresa en 1752 fue la última versión del Quinto trozo salida bajo su control. El autor aprovechó para hacer varias adiciones, entre las que se encuentra una «Lista segunda de las personas que por su piedad, su devoción o su curiosidad han concurrido a subscribirse en estas obras», que cierra esa quinta parte. Todas y cada una de las ediciones publicadas desde entonces han prescindido de esa «Lista», que, no obstante, forma parte esencial del texto y tiene una función determinante en su construcción literaria e ideológica.Diego Torres Villarroel’s 1752 edition of Vida was the last version of Quinto trozo that was published under his control. The author had the opportunity to make several additions, including a «Lista segunda de las personas que por su piedad, su devoción o su curiosidad han concurrido a subscribirse en estas obras», which closes this fifth part. All the editions published after the 1752 version disregarded the «Lista», which is an essential part of the text and plays a decisive role in its literary and ideological construction.Este trabajo forma parte del proyecto Vida y escritura II [PID2019-104069GB-I00].Filologí
Un paisaje para después de la pandemia. La perspectiva de la Infancia y la adolescencia
No full textPresentación registrada en el Seminario de investigación "La situación social de la infancia y la adolescencia en el escenario (pos)pandémico: diagnóstico, retos y propuestas de actuación" celebrado el 25 de junio de 2024 en la que se analizan algunos de los principales resultados de la Encuesta I NFAPOST, realizada en el contexto del proyecto de I+D+i del mismo nombre.Miniestrio de Ciencia, Innovación y UniversidadesSociología, Trabajo Social y Salud Públic