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Efecto del choque térmico en el comportamiento de hormigón con triturado de pala de aerogenerador
No full textResumen de la comunicación presentada en: XVII Congreso Nacional de Materiales CNMAT 2024, durante los días 25-28 de julio en Málaga (España).En el campo de la energía eólica se están experimentando grandes problemas de sostenibilidad, debido a que gran parte del parque de aerogeneradores actual está llegando al límite su vida útil. Para poder subsanar esta disyuntiva, se propone desmantelar las palas de las turbinas de los aerogeneradores, las cuales son de difícil reciclaje, y convertirlas en Triturado de Pala de Aerogenerador (TPA) a través de su corte y machaqueo no selectivo. El TPA está compuesto por materiales reforzados con fibras de vidrio o carbono, resinas poliméricas, poliuretano y madera de balsa, de tal forma que se pretende incorporar este residuo al hormigón y estudiar así su comportamiento frente a altas temperaturas.This research work was supported by the Spanish Ministry of Universities, MICINN, AEI, EU, ERDF and NextGenerationEU/PRTR [grant numbers PID2023-146642OB-I00; 719 10.13039/501100011033; TED2021-129715 B–I00]; the Junta de Castilla y León (Regional Government) and ERDF [grant number UIC-231; BU033P23
New screen-printed electrodes for Raman spectroelectrochemistry. Determination of p-aminosalicylic acid
No full textThe availability of new surface enhanced Raman scattering (SERS) substrates is essential to develop
quantitative analytical methods. Electrochemistry is an easy, fast and reproducible methodology to prepare SERS
substrates on screen-printed electrodes (SPEs).
Results: This work proposes new SPEs based on a three-electrode system all made of silver. Using the same ink for
the whole electrode system facilitates the fabrication process, reduces production costs, and leads to excellent
analytical performance. The results showed that Raman enhancement depends strongly on the type of silver ink.
To demonstrate the capabilities of the new electrodes developed, 4-aminosalicylic acid was determined in
complex matrices and in the presence of strong interfering compounds such as salicylic acid and acetylsalicylic
acid. The proposed analytical method is based on the electrochemical surface oxidation enhanced Raman scat
tering (EC-SOERS) strategy. AgCl nanocrystals are generated on the working electrode surface, which amplify the Raman signal of 4-aminosalicylic acid. Good figures of merit were obtained both in the absence and in the
presence of the interfering compounds, achieving a correct estimation of a 4-aminosalicylic test sample in
complex matrices.
Significance: The new SPEs have been demonstrated to be very sensitive and reproducible which, together to the
high specificity of the Raman signal, makes this methodology very attractive for chemical analysis.Ministerio de Ciencia e Innovacion ´ and Agencia Estatal de Inves tigacion ´ (MCIN/AEI/10.13039/501100011033, PID2020-113154RBC21, PID2020-113154RB-C22), Junta de Castilla y Leon ´ and European Regional Development Fund (Grant number: BU036P23), Ministerio de Ciencia, Innovacion ´ y Universidades (RED2022-134120-T) are grate fully acknowledged for funding this work. L.R. acknowledges Ministerio de Ciencia e Innovacion ´ and Agencia Estatal de Investigacion ´ (MCIN/ AEI/10.13039/501100011033, PIS2020-113154 GB-C21) for the pre doctoral contract
The use of Escape Room as an alternative teaching strategy for sustainable mobility
No full textComunicación presentada en: 25th Euro Working Group on Transportation Meeting (EWGT) 2023, durante los días 6-8 de septiembre en Santander (Cantabria)Gamification and Escape Rooms (ER) are becoming useful tools to encourage attitudinal and behavioural changes and increase learning. In the field of sustainable mobility their use is not widespread and is, in most cases, related to digital games and mobile applications aimed largely at an adult audience. In this study, we explore the potential of this tool to encourage the learning of sustainable mobility concepts in children between the ages of 10 and 13. The experience created, through the resolution of tests and puzzles, has led the 105 students involved to experience, in a playful environment, the formation and learning of sustainable mobility concepts. To measure learning, a pre- and post-experience questionnaire has been provided and the results have been classified with some characteristics of the students such as gender and mobility habits. The analysis of the questionnaire data using multinomial logit models has allowed us to determine which variables affect the probability of answering correctly before and after the experience. In the results obtained we can observe that gender, bicycle use, public transport or the presence of many cars in the family are relevant variables when it comes to having knowledge about mobility issues and that the ER experience has favored a change, although minimal, in the acquisition of sustainable mobility concepts.This research has been made possible thanks to the Margarita Salas Fellowship funded by the European Union's NextGenerationEU funds through the "Recovery, Transformation and Resilience Plan"
Dataset of the work “Determination of ofloxacin in urine using UV/Vis absorption spectroelectrochemistry”
No full textUV–Vis absorption spectroelectrochemistry has been selected as a suitable multiresponse technique to determine the fluoroquinolone ofloxacin in urine samples without any previous pretreatment. Due to the modification of the working electrode surface during the oxidation of this antibiotic, the electrode has to be replaced or polished between measurements. A new spectroelectrochemistry cell has been developed, which allows in a simple way to perform reproducible experiments with different screen-printed electrodes. The new cell has been used to perform analysis in a complex matrix such as urine. Due to the trilinear character of the spectroelectrochemical data, PARAFAC has been used to determine ofloxacin with very good figures of merit, demonstrating the capability of trilinear methods to avoid the influence of some interfering compounds.Ministerio de Ciencia e Innovación and Agencia Estatal de Investigación (Grant numbers: MCIN/AEI/10.13039/501100011033, PID2020-113154RB-C21), Ministerio de Ciencia, Innovación y Universidades (Grant number: RED2022-134120-T), Junta de Castilla y León and European Regional Development Fund (Grant number: BU036P23) are gratefully acknowledged for funding this work. F.O. acknowledges Junta de Castilla y León and European Social Found for his predoctoral contract
Finite element method for sustainable and resilient structures made with bar and fiber -reinforced EAFS concrete
No full textStructural engineers have to address the climate change challenge by designing sustainable and resilient structures. At this juncture, Electric Arc Furnace Slags (EAFS), a steel-industry waste, are used in replacement of natural aggregates to enhance concrete properties. Moreover, steel and synthetic fibers are added to improve the postcracking behavior while the traditional bar reinforcement enhances the tensile performance. This makes EAFS concrete substantially ductile compared to normal concrete, which contributes to a higher structural resiliency, and hence minimizes functionality disruptions. However the use of fiber and bar -reinforced EAFS concrete in structures is still limited due to the uncertainties introduced by EAFS and fibers. This justify the development of advanced modeling techniques (ie. Finite element Analysis, FEA), which can be used to predict the behavior of EAFS concrete structures at the designing stage. This work build up from the extensive work of the coauthors in the testing of EAFS concrete and, more recently, in the developed FEA of fiber-reinforced EAFS concrete. In this paper the modeling of bar reinforcement is added to the FEA to study the behavior of structural elements made with fiber-reinforced EAFS concrete. The presented FEA is validated through full-scale experiments (four-point flexural test), which shows that the presented FEA is appropriate. The presented numerical model enables to study phenomena difficult to study from experiments or in-situ such as the cracking. It is worth noting that the addition of steel fibers reduced the crack mouth opening displacement in 29.3% and the depth of the cracks in 12.7% in the presented EAFS concrete.The authors wish to express their gratitude to the following entities for having funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”, by the “European Union” [PID2020–113837RB-I00; PID2021–124203OB-100; RTI2018–097079- B-C31, PID2021–124203OB-100]; the Junta de Castilla y Leon ´ (Regional Government) and ERDF [BU119P17, UIC-231]; the University of Burgos [Y135.GI]; the Basque Government [IT1619–22 SAREN research group]. This work has been partially supported by a Maria Zambrano research fellowship at Universitat Politecnica de Catalunya funded by Ministerio de Universidades
Symmetry-resolved measures in quantum field theory: A short review
No full textIn this short review, we present the key definitions, ideas and techniques involved in the study of symmetry resolved entanglement measures, with a focus on the symmetry resolved entanglement entropy. In order to be able to define such entanglement measures, it is essential that the theory under study possess an internal symmetry. Then, symmetry-resolved entanglement measures quantify the contribution to a particular entanglement measure that can be associated to a chosen symmetry sector. Our review focuses on conformal (gapless/massless/critical) and integrable (gapped/massive) quantum field theories, where the leading computational technique employs symmetry fields known as (composite) branch point twist fields.Olalla is grateful to EPSRC for financial support under a Small Grant EP/W007045/1. Luc´ıa is grateful to the Regional Government of Castilla y Le´on (Junta de Castilla y Le´on), and the Spanish Ministry of Science and Innovation MICIN for the financial support received through the “Q-CAYLE: Secure Quantum Communications in Castilla y León” project, also co-funded by the European Union NextGenerationEU (PRTR C17.I1)
Análisis observacional de la construcción de las secuencias que acaban en lanzamiento en baloncesto Sub-14 en función de la demarcación de los jugadores
No full textUsing observational methodology, a study was carried
out on the offensive sequences that end in a shot—both
effective and ineffective—for FC Barcelona’s elite U14 team,
champions of the Minicopa Endesa 2020. An observation
instrument was adapted from one with proven validity.
The data was recorded using the free software Lince. The
observational sample is composed of all the sequences
that end in a shot. The reliability of the recordings was
guaranteed by inter-observer agreement using Cohen’s
kappa coefficient. Complementary use of the decision tree
analysis technique and the detection of T-patterns —using
the software Theme— made it possible to characterise
the construction of the sequences that end in shots that
were both effective and ineffective. It may be concluded
that in the elite U14 category, ineffective sequences still
predominate over effective ones, except for the inside shots
of players in a point guard position.En el seno de la metodología observacional se ha realizado un estudio de las secuencias ofensivas que acaban en lanzamiento -eficaces e ineficaces- de un equipo de élite de la categoría sub-14: el FC Barcelona, campeón de la “Minicopa Endesa 2020”. Se ha realizado una adaptación de un instrumento de observación que cuenta con probadas evidencias de validez. El registro de los datos se ha realizado mediante el programa libre Lince. El muestreo observacional está compuesto por la totalidad de las secuencias que finalizan en lanzamiento. Se ha garantizado la fiabilidad de los registros, mediante concordancia inter-observadores, a través del coeficiente Kappa de Cohen. La utilización de forma complementaria de la técnica de análisis de árboles de decisión y de la detección de T-patterns -mediante el software Theme- han permitido caracterizar la construcción de las secuencias que acaban en lanzamiento -eficaces e ineficaces-. Se concluye que en la élite de la categoría sub 14 todavía predominan las secuencias ineficaces sobre las eficaces, salvo en los lanzamientos interiores del jugador con demarcación base.The authors gratefully acknowledge the support of a Spanish government project “Integración entre datos observacionales y datos provenientes de sensores externos: Evolución del software LINCE PLUS y desarrollo de la aplicación móvil para la optimización del deporte y la actividad física beneficiosa para la salud” [EXP_74847] (2023). Ministerio de Cultura y Deporte, Consejo Superior de Deporte and European Union. In addition, authors thank the support of the Generalitat de Catalunya Research Group, GRUP DE RECERCA I INNOVACIÓ EN DISSENYS (GRID). Tecnología i aplicació multimedia i digital als dissenys observacionals [2021 SGR 00718] (2022-2024). Also, this study was funded by grants from the University of La Rioja
Thinking outside the box in education
No full textLibro de actas del I Congreso Internacional de experiencias educativas STEAM celebrado en Burgos (España) durante los días 12 al 15 de abril de 2023La educación STEAM (Science, Technology, Engineering, Arts and Mathematics) juega un papel cada vez más relevante en las políticas educativas. Este libro reúne las comunicaciones presentadas en el I Congreso Internacional de Experiencias Educativas STEAM, organizado por la Universidad de Burgos, celebrado del 12 al 15 de abril de 2023. En él se abordan diversas líneas temáticas: estrategias didácticas innovadoras para la enseñanza STEAM, experiencias educativas STEAM en distintas etapas educativas (Infantil, Primaria, Secundaria y Universidad) y el desarrollo profesional docente en el ámbito STEAM. Los contenidos incluyen contribuciones de profesionales de todas las etapas educativas, así como de personas e instituciones interesadas en la educación STEAM, incluyendo a quienes inician su carrera docente o investigadora en este campo
Respiratory system
No full textInfografía de educación en salud sobre el sistema respiratorio, dirigido a niños y niñas de diferentes colegios ugandeses del distrito de Wakiso. Está en inglés (idioma oficial del país) y forma parte de un proyecto Aprendizaje Servicio del Grado en Enfermería de la Universidad de Burgos
The Use of Integrated Multichannel Records in Learning Studies in Higher Education: A Systematic Review of the Last 10 Years
No full textNeurophysiological measures have been used in the field of education to improve our knowledge about the cognitive processes underlying learning. Furthermore, the combined use of different neuropsychological measures has deepened our understanding of these processes. The main objective of this systematic review is to provide a comprehensive picture of the use of integrated multichannel records in higher education. The bibliographic sources for the review were Web of Science, PsycINFO, Scopus, and Psicodoc databases. After a screening process by two independent reviewers, 10 articles were included according to prespecified inclusion criteria. In general, integrated recording of eye tracking and electroencephalograms were the most commonly used metrics, followed by integrated recording of eye tracking and electrodermal activity. Cognitive load was the most widely investigated learning-related cognitive process using integrated multichannel records. To date, most research has focused only on one neurophysiological measure. Furthermore, to our knowledge, no study has systematically investigated the use of integrated multichannel records in higher education. This systematic review provides a comprehensive picture of the current use of integrated multichannel records in higher education. Its findings may help design innovative educational programs, particularly in the online context. The findings provide a basis for future research and decision making regarding the use of integrated multichannel records in higher education.This research was funded by the Ministry of Science and Innovation (Spain) [POD2020-117111RB-I00]