47763 research outputs found

    Non-destructive evaluation and characterisation techniques for lithium-ion battery degradation mechanisms via novel in operando and ex-situ approaches

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    268 p.Non-destructive analytical techniques represent a key tool within the battery field, from fundamental research and development, through quality control and state-of-safety and state-of-health within proof-of-concept and commercial systems, to recycling and second life circular economy applications. While a range of analytical tools already exist, these often have limitations in the information they may provide or their applicability. Thus, expanding this toolkit through novel application methods represents an important step forward in the development of a comprehensive analysis of batteries and their constituent systems ¿ from first fabrication to end-of-life. Within this thesis, we examine the potential of non-destructive techniques when applied to hitherto unexplored area, from laboratory to cell level, providing an understanding of the advantages and limitations of these as tools for the battery community

    La educación para la salud en la universidad: una oportunidad para aprender a vivir de forma sostenible

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    La pandemia originada por el COVID-19 ha puesto de manifiesto que la sostenibilidad del planeta y nuestra supervivencia están en serio peligro. En este contexto, el objetivo general del estudio es analizar los comportamientos y hábitos de los estudiantes universitarios ecuatorianos en relación con la Educación para la Salud (EPS). MÉTODO. Se trata de una investigación exploratoria, descriptiva, a la vez que comparativa, correlacional y explicativa en la que se ha trabajado con una metodología cuantitativa. Se ha diseñado y validado un cuestionario y para ello se ha trabajado con una muestra, no aleatoria, de 1159 estudiantes correspondientes a 9 universidades ecuatorianas, de las que 3 pertenecen a la Red de Universidades Saludables. RESULTADOS. Los resultados recogen que los universitarios/as manifiestan tener una aceptable salud, están medianamente informados sobre este tema, la familia y la escuela son informantes clave en EPS y, paradójicamente, las universidades que pertenecen a la Red de Universidades Saludables obtienen puntuaciones inferiores en EPS que las no pertenecientes. Finalmente, se proponen alternativas para mejorar la EPS en la universidad. DISCUSIÓN. Una de las muchas enseñanzas de esta crisis sanitaria originada por el COVID-19 es que debemos vivir de una manera diferente. Hagamos de la universidad una institución referente a la hora de abordar el gran reto de reconstruir un planeta más justo, saludable y sostenible

    Il ricorso alla dote a Catania, Paternò e Randazzo dal principio del XV alla metà del XVI secolo

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    Bisogni economici, conformismo sociale, rapporti successori, forme di controllo familiare costituiscono le principali aspettative ed esigenze legate all’istituto della dote. Il passaggio dei beni era raramente eludibile nelle contrattazioni tra le famiglie nella Sicilia bassomedievale. Per il Quattrocento sino a metà del Cinquecento, i 105 contratti dotali qui esaminati riguardano tre comunità della Sicilia orientale, Catania, Paternò e Randazzo, tra loro vicine e legate da connessioni economiche e da medesime norme consuetudinarie o di diritto privato. Questo studio prende in esame l’organizzazione dei rapporti parentali e successori e le ragioni che spingevano a scegliere i beni e il luogo di residenza dei coniugi. La tipologia dei beni permette di approfondire l’importanza economica e simbolica della dote e il ruolo della donna sulla stessa. I limitati dati disponibili sulla residenza non consentono generalizzazioni ma offrono alcune informazioni significative. L’analisi proposta conferma la necessità di connettere teoria e prassi e che solo una precisa contestualizzazione rende possibile superare una lettura approssimativa

    La experiencia romana: arquitectos españoles en la Italia fascista

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    [ESP] El viaje a Italia siguió siendo una referencia para muchos arquitectos de la Europa de entreguerras, aunque otros destinos como Alemania, Francia o los Países Bajos cobraron mayor interés. Los arquitectos viajaron al país mediterráneo como complemento formativo, de conocimiento y de experiencia directa de un vasto panorama artístico y cultural que llegaba hasta la época más reciente. Italia ofrecía, como una mano abierta, los caminos de la antigüedad, el clasicismo, la importancia de la restauración. A todo ello se sumó la tradición popular, y diferentes lecturas sobre la modernidad de la mano de Giuseppe Terragni, Luigi Figini, Gino Pollini, Gio Ponti, Giuseppe Pagano, Aldaberto Libera, Luigi Moretti, Enrico del Debbio o Marcelo Piacentini, aunque su presencia fue secundaria en las publicaciones profesionales en España. Por lo que los arquitectos españoles estuvieron abiertos a una confluencia híbrida de múltiples matices: conformada por su formación, - donde Italia era un centro obligado -, la tradición arquitectónica de su lugar de origen y las experiencias de aquellos lugares que visitaron. Varios arquitectos acudieron a Italia durante los años que duró la dictadura de Mussolini, entre 1922 y 1944. Algunos de ellos estuvieron vinculados a la Academia de España en Roma, fundada en 1873, lo que les permitió realizar estancias prolongadas y, siguiendo la normativa de la Academia, visitar diferentes países, realizar proyectos arquitectónicos y de restauración. Así sucedió con Emilio Moya, Fernando García Mercadal, Adolfo Blanco, Marino Rodríguez Orgaz o José Ignacio Hervada. Mientras que otros arquitectos realizaron viajes más cortos, tal fue el caso de Víctor Eusa, Leopoldo Torres Balbás, Josep Torres Clavé, Sixte Illescas, Josep María Sert, José Manuel Aizpurua o Francisco de Asís Cabrero, entre otros, ya que ellas no tuvieron acceso a la profesión. El viaje a Italia fue, en suma, un complemento importante en su formación en un período convulso y repleto de cambios, que enfrentó a los arquitectos a una realidad repleta de pliegues y contribuyó a su desarrollo profesional en la arquitectura, la restauración o la docencia. [ENG] Italy remained a point of reference for many architects in interwar Europe, although other destinations such as Germany, France, or the Netherlands attracted increasing interest. Architects traveled to the Mediterranean country as a formative complement, seeking knowledge and first-hand experience of a vast artistic and cultural panorama that extended into the most recent period. Italy offered, like an open hand, the paths of antiquity, classicism, and the importance of restoration. Added to this were vernacular traditions and various interpretations of modernity associated with figures such as Giuseppe Terragni, Luigi Figini, Gino Pollini, Gio Ponti, Giuseppe Pagano, Adalberto Libera, Luigi Moretti, Enrico del Debbio, and Marcello Piacentini, although their presence in professional publications in Spain was secondary. Consequently, Spanish architects remained open to a hybrid confluence of multiple nuances shaped by their training, —where Italy constituted an essential centre—, the architectural traditions of their place of origin, and the experiences of the places they visited. Several architects travelled to Italy during the years of Mussolini’s dictatorship, between 1922 and 1944. Some were linked to the Spanish Academy in Rome, founded in 1873, which enabled them to undertake extended stays and, in accordance with the Academy’s regulations, to visit various countries and carry out architectural and restoration projects. This was the case for Emilio Moya, Fernando García Mercadal, Adolfo Blanco, Marino Rodríguez Orgaz, and José Ignacio Hervada. Meanwhile, other architects made shorter trips, such as Víctor Eusa, Leopoldo Torres Balbás, Josep Torres Clavé, Sixte Illescas, Josep Maria Sert, José Manuel Aizpurua, or Francisco de Asís Cabrero. The journey to Italy was, in sum, an important complement to their training during a turbulent period marked by profound change, one that confronted architects with a complex reality and contributed to their professional development in architecture, restoration, and teaching.Proyecto: “Aizpurua y Roma” (Real Academia de España en Roma. Ministerio de Asuntos Exteriores y Cooperación. AECID). Grupo de investigación: “Historia urbana. Población y patrimonio” (UPV/EHU. Eusko Jaurlartiza/Gobierno Vasco: IT1618-22)

    CO2 capture from water using a copper/chromium-adenine supramolecularly assembled porous metal-organic material

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    A supramolecular metal-organic porous material [CrCu6(μ-adeninato-kN3:kN9)6(μ-OH)6(μ-OH2)6](SO4)1.5 (Cu6Cr) has been tested for CO2 capture from water. The properties of this compound, insolubility in water, a flexible supramolecular structure, and protonable positions on the adeninato ligands, make it a potential candidate for this task. The experimental determination of CO2 capture from water was performed using two techniques: magnetic sustentation, for first time, and gravimetric measurements. Both techniques verified the CO2 capture providing complementary information. The magnetic sustentation technique measures the mass being incorporated into the porous material (which depends on the chemical form in which is being captured: physisorption, HCO3- or carbamate), whereas the gravimetric measurement quantifies the total mass of CO2 being captured in the aqueous suspension of the Cu6Cr particles regardless the chemical form in which this capture takes place. After 1 hour of CO2 bubbling (300 mL·min-1) into the aqueous suspension of Cu6Cr particles, capture mass values of 22.3 % and 17.1 % are measured by magnetic sustentation and gravimetric techniques, respectively. This difference is because the CO2 is captured as H2CO3 that reacts with the adeninato ligands to form adenine/HCO3- pairs. These values normalize to 5.9 HCO3- and 6.4 CO2 molecules per Cu6Cr entity, which are close to the theoretical value of 6, because of the six adeninato ligands per heptameric Cu6Cr entity. CO2 adsorption isotherms, adsorption/desorption kinetics and cycling stability are also reported. Kinetic studies provide a ΔHads = -19.4 kJ/mol, which is a significantly lower than other CO2 adsorbents. However, the cycling stability needs to be improvedAgencia Estatal de Investigación Spain Eusko Jaurlaritza Spain IT1722–22 Eusko Jaurlaritza Spain Ministerio de Ciencia e Innovación Spain PID2022–138968NB-C22 Ministerio de Ciencia e Innovación Spai

    Quantum electronic properties of low-dimensional transition-metal systems: modeling, simulation and characterization

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    229 p.Esta tesis doctoral aborda el estudio de sistemas de baja dimensionalidad formados por metales detransición mediante el cálculo de sus propiedades electrónicas. El trabajo se articula en torno a unaaplicación sistemática de la teoría del funcional de la densidad (DFT), complementada con técnicascomo el band unfolding, modelos de enlace fuerte y funciones de Wannier. Se estudian dos familiasprincipales de materiales: calcogenuros cuasi-unidimensionales y dicalcogenuros bidimensionales y susheteroestructuras. A partir del análisis ab initio de sus estructuras electrónicas, se identifican losparámetros estructurales y químicos clave que determinan sus propiedades electrónicas. Los resultadospermiten clarificar discrepancias experimentales, caracterizar nuevos compuestos y proporcionarherramientas teóricas que ayudan a interpretar observaciones experimentales relacionadas confenómenos fuertemente correlacionados, como ondas de densidad de carga, efectos Mott y Kondo osuperconductividad

    Heziketa Fisikoko irakasleen formakuntza hezkuntza emozionalean

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    [58] p. -- Bibliogr.: p. [32-33][EUS] Gaur egun, hezkuntza emozionala oraindik ere gutxi lantzen da sistematikoki eskola-eremuan, nahiz eta ikasleen garapen integralerako duen garrantzia gero eta nabarmenagoa izan. Gainera, profesional askok ez dute prestakuntza espezifikorik jaso arlo horretan, eta horrek zaildu egiten du ikasgelan benetan aplikatzea. Lan honetan Heziketa Fisikoko irakasleek graduan hezkuntza emozionalari buruz izandako formakuntza aztertuko da eta Heziketa Fisikoko lau irakasleri elkarrizketa bat egingo zaie hezkuntza emozionalari ematen dioten garrantzia eta egiten duten lanketa aztertzeko. Funtsean, lan honek dituen helburuak hurrengoak dira: alde batetik Lehen Hezkuntzako graduan hezkuntza emozionala lantzeko jasotako formazioa aztertzea, eta bestetik, Heziketa Fisikoko irakasleek hezkuntza emozionalari ematen dioten garrantzia eta egiten duten lanketa aztertzea

    Altered tubulin detyrosination due to SVBP malfunction induces cytokinesis failure and senescence, underlying a complex hereditary spastic paraplegia

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    Senescence, marked by permanent cell cycle arrest may contribute to the decline in regenerative potential and neuronal function, thereby promoting neurodegenerative disorders. In this study, we employed whole exome sequencing to identify a previously unreported biallelic missense variant in SVBP (p.Leu49Pro) in six patients from three unrelated families. These affected individuals present with a complex hereditary spastic paraplegia (HSP), peripheral neuropathy, verbal apraxia, and intellectual disability, exhibiting a milder phenotype compared to patients with nonsense SVBP mutations described previously. Consistent with SVBP's primary role as a chaperone necessary for VASH-mediated tubulin detyrosination, both patient fibroblasts with the p.Leu49Pro mutation, and HeLa cells harboring an SVBP knockdown exhibit microtubule dynamic instability and alterations in pericentriolar material (PCM) component trafficking and centrosome cohesion. In patient fibroblasts, structural abnormalities in the centrosome trigger mitotic errors and cellular senescence. Notably, premature senescence characterized by elevated levels of p16INK4, was also observed in patient peripheral blood mononuclear cells (PBMCs). Taken together, our findings underscore the critical role of SVBP in the development and maintenance of the central nervous system, providing novel insights associating cytokinesis failure with cortical motor neuron disease and intellectual disability.We are indebted to the families who participated in this study. We thank Karen Schindler (Rutgers University) for advice, Elisa Marti (IBMB, CSIC), and Murielle Saade (IBMB, CSIC) for technical help and discussion. We also thank Cristina Guilera and Juanjo Martínez for their excellent technical assistance. This study was supported by the Centre for Biomedical Research on Rare Diseases (CIBERER) (ACCI19-759), the URDCat programme (PERIS SLT002/16/00174), the IMPaCT Genómica program of ISCiii, “Fondo Europeo de Desarrollo Regional (FEDER), Unión Europea, una manera de hacer Europa” (FIS PI23/01090), “La Marató de TV3” Foundation (202006–30), the Hesperia Foundation, the Secretariat for Universities and Research of the Ministry of Business and Knowledge of the Government of Catalonia (2021SGR00899), the Association ASL-HSP and “La Marató de TV3” Foundation (202006–30) to AP. This study was also funded by the Spanish Institute for the Center for Biomedical Research on neurodegenerative Diseases (CIBERNED) to ALM, the Spanish Ministry of Economy and Competitiveness—MINECO PID2020-117284RB-100 cofunded by FEDER funds/European Regional Development Fund (ERDF)—Catalan government agency AGAUR 2021-SGR-01378 to AV. We thank the CERCA Programme/Generalitat de Catalunya and the Josep Carreras Foundation for institutional support (to AV). MM and PLA acknowledge financial support from the Spanish Ministry of Economy and Competitiveness through the “Severo Ochoa” program for Centres of Excellence in R&D (CEX2019-000910-S [MCIN/ AEI/10.13039/501100011033]), from Fundació Privada Cellex, Fundació Mir-Puig, and from Generalitat de Catalunya through the CERCA program. NL and MR are supported by the Center for Biomedical Research on Rare Diseases (CIBERER). EV was supported by Sara Borrell postdoctoral contract granted by Instituto de Salud Carlos III through the grant CD19/00221 (Cofunded by the European Social Fund. ESF investing in your future). M.E-A is a recipient of a FPI PhD studentship from MINECO (BES-2015-071251). SF was supported by The Spanish Institute for Health Carlos III [Miguel Servet program CP11/00080]

    Megaprojects as sites for resistance: the electoral effects of Mapuche attacks on highways

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    Megaprojects are electoral magnets due to their transformative power, but they also raise strong opposition. Using a Regression Discontinuity Design (RDD), this paper assesses the impact on presidential elections of Mapuche attacks and protests at two strategic road infrastructures. Mapuche use a repertoire of non-conventional actions in their struggle with the Chilean state seeking self-determination. Estimations reveal that attacks reduce the likelihood of victory for the governing coalition at nearby polling stations, while protests have no effect. We interpret these results as a contest in the symbolic sphere to oppose the narratives of modernity and unity that highways embody.Xabier Gainza would like to thank the support from the research group on Human Security, Local Human Development and International Cooperation of the Basque University System (IT1434-22)

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