University of Huelva
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Circular entrepreneurial ecosystems: a Quintuple Helix Model approach
Get PDFPurpose: The shift toward a circular economy (CE) represents a collaborative endeavor necessitating the presence of efficient frameworks, conducive contexts and a common comprehension. This research serves as a pivotal stride towards this goal, presenting an exclusive prospect for the investigation and fusion of these frameworks, with particular emphasis on the Quintuple Helix Model (5HM), into a unified theoretical framework that underscores the core principles of the CE. This study is centered on three pivotal questions aimed at decoding the CE transition in specific regional settings.
Design/methodology/approach: Adopting an abductive approach firmly anchored in a two-stage qualitative process, this study specifically merges the foundational principles from institutional theory, entrepreneurship literature and CE frameworks to provide insights into the dynamics of circular ecosystems, with a specific focus on the Huelva region in Spain.
Findings: The findings demonstrate significant potential in the CE, ranging from the integration of product and service systems to innovations in eco-industrial practices. Yet, a notable deficiency exists: the absence of institutional entrepreneurs, highlighting the essential role that universities can play. As recognized centers of innovation, universities are suggested to be key contributors to the transformation toward a CE, aligning with their societal and economic responsibilities.
Practical implications: This study highlights the importance of managing relationships with entities like SMEs and policymakers or academia for effective CE adoption. Policymakers can refine strategies based on the research’s insights, while the impact of university-driven circular ecosystems on sustainable societies is another crucial area for research.
Originality/value: The sustainability models cited in CE literature may not be comprehensive enough to prevent problem shifting, and it can be argued that they lack a sound theoretical and conceptual basis. Furthermore, the connections between sustainability objectives and the three levels of the CE operating system remain vague. Additionally, there is insufficient information on how regions foster the involvement of the environment in fivefold helix cooperation and how this impacts the CE.The authors thank the companies for their role as key partners in the production of primary data for
this paper. Special thanks to the interviewed. This research is supported by Nazarbayev University
Grants No. 11022021FD2913 and No. 11022021CRP1510Dirección de Empresas y Marketin
Mapping roadless areas in regions with contrasting human footprint
Get PDFIn an increasingly human- and road-dominated world, the preservation of functional ecosystems has become highly relevant. While the negative ecological impacts of roads on ecosystems are numerous and well documented, roadless areas have been proposed as proxy for functional ecosystems. However, their potential remains underexplored, partly due to the incomplete mapping of roads. We assessed the accuracy of roadless areas identification using freely available road-data in two regions with contrasting levels of anthropogenic influence: boreal Canada and temperate Central Europe (Poland, Slovakia, Czechia, and Hungary). Within randomly selected circular plots (per region and country), we visually examined the completeness of road mapping using OpenStreetMap 2020 and assessed whether human influences affect mapping quality using four variables. In boreal Canada, roads were completely mapped in 3% of the plots, compared to 40% in Central Europe. Lower Human Footprint Index and road density values were related to greater incompleteness in road mapping. Roadless areas, defined as areas at least 1 km away from any road, covered 85% of the surface in boreal Canada (mean size ± s.d. = 272 ± 12,197 km2), compared to only 0.4% in temperate Central Europe (mean size ± s.d. = 0.6 ± 3.1 km2). By visually interpreting and manually adding unmapped roads in 30 randomly selected roadless areas from each study country, we observed a similar reduction in roadless surface in both Canada and Central Europe (27% vs 28%) when all roads were included. This study highlights the urgent need for improved road mapping techniques to support research on roadless areas as conservation targets and surrogates of functional ecosystems.This research is financially supported by the National Science Centre Poland (NCN), project TRACE (No. 2018/29/B/ST10/02979). M.T.H. was financially supported by the Doctoral Study of Natural Sciences of the Polish Academy of Sciences in Kraków and by the statutory funds of the Institute of Nature Conservation, Polish Academy of Sciences.Departamento de Biología Ambiental y Salud Públic
Heteroatom-tagged proteomics of lung cancer and chronic obstructive pulmonary disease human serum reveal alterations in selenoproteins
Get PDFHeteroatom-tagged proteomics allows the absolute quantification of selenoproteins using the heteroatom as a “tag” into a selective and sensitive atomic detector instead of a molecular one. Using this analytical method, about 90% of total selenium in human serum/plasma can be measured as selenoproteins and total selenometabolites and thus, the status of selenium can be determined. Herein, we determined the absolute concentration of selenoproteins in human serum patients with lung cancer (LC) and chronic obstructive pulmonary disease (COPD), a competing cause of morbidity and mortality in smokers as well as an independent risk factor for LC. We conducted an observational study of 154 human serum samples obtained from LC and COPD patients with varying severity of disease, including COPD patients who developed LC during follow-up and healthy controls (HC). Using heteroatom-tagged proteomics, we determined extracellular glutathione peroxidase (eGPx), selenoprotein P (SELENOP), and selenoalbumin (SeAlb). Associations between selenoproteins were also studied as potential biomarkers of disease. The concentration of eGPx was significantly higher in the all-inclusive COPD cohort compared to HC, COPD patients with LC, or those with mild obstructive lung disease, while SELENOP concentration was significantly decreased in LC patients compared to HC and COPD. We found an inverse correlation between SELENOP and SeAlb in HC, but also in LC patients, and especially in patients with COPD and LC. Moreover, we found that eGPx and selenometabolite concentrations were positively associated with LC human serum. Selenoprotein concentrations were altered in COPD and LC when compared to healthy controls suggesting a potential role of the selenoproteome in the diagnosis and/or treatment of these tobacco-related diseases.This work has been supported by the project “Heteroatom-tagged
proteomics and metabolomics to study lung cancer. Influence of gut
microbiota” (Ref.: PY20_00366). Project of Excellence. Regional Ministry
of Economy, Knowledge, Business and University, Andalusia, Spain.
The authors also thank the grants Ref. 651/2018 and 115/2020 from the
Spanish Society of Pneumology and Surgery (SEPAR) and 08/2018 from
the Association of Pneumology and Thoracic Surgery (Neumosur) that
supported samples recruitment at the hospitals and biobank registration.
The authors also thank Instituto de Salud Carlos III (AES16/01783) and
unrestricted funding from Menarini Group and AstraZeneca“. Funding
for open access charge: Universidad de Huelva / CBUA.Química "Profesor José Carlos Vílchez Martín
Ciudad del Marisco
Get PDFSe trata de una aportación extraordinaria en el capítulo de obras profesionales de arquitectura. Sergio Gómez Melgar es Arquitecto firmante y coordinador del equipo redactor del Proyecto de arquitectura con alto nivel de innovación (incluye propuesta ganadora del concurso internacional de ideas, diseño arquitectónico, cálculo de la estructura, instalaciones, información constructiva y diseño y optimización energética).
También es Arquitecto director facultativo y coordinador del equipo responsable de la Dirección de obras (incluye supervisión y control de todo el proceso constructivo desde la firma del Acta de replanteo de las obras hasta la firma del Acta de recepción de las obras). Según Ley 38/99 de Ordenación de la Edificación.
Aspectos destacados de Ciudad del Marisco en relación a la eficiencia energética son:
5. La envolvente térmica sin puentes térmicos,resuelta mediante cubierta invertida con aislamiento exterior de XPS y un aislamiento continuo por el interior de LM en el trasdosado de panel preformado de calidad alimentaria y LM bajo solera flotante en contacto con el terreno.
6. La incorporación de la aerotermia como sistema de alta eficiencia en la producción de ACS.
Ciudad del Marisco de Huelva es el nuevo proyecto del Puerto de Huelva que sitúa a nuestra ciudad como epicentro de la industria del consumo y la transformación del pescado y el marisco en el sur de Europa. Servirá además de puerta de entrada a Huelva desde la costa occidental a través de los puentes del río Odiel, constituyéndose en icono fácilmente reconocible que sirva de polo de atracción al visitante.
Ciudad del Marisco es un edificio híbrido: industrial y comercial/gastronómico. Una misma infraestructura da cobertura a la actividad industrial desarrollada por los exportadores de pescado y marisco del Puerto de Huelva, y a la vez crea el entorno adecuado para constituirse en punto de encuentro gastronómico a todos los entusiastas de este producto. Unifica por tanto la actividad tradicional de los exportadores de pescado y marisco, con zonas para actividades terciarias y de esparcimiento para los ciudadanos de Huelva y sus visitantes.
Enmarcado en las actuaciones que en los últimos años está desarrollando el Puerto de Huelva para acercar Puerto y Ciudad, este edificio se conecta con su entorno urbano a través de pasarelas peatonales y carriles bici que dan acceso directo a su terraza mirador, extendiéndolo hasta las marismas del Odiel.
El proyecto de Ciudad del Marisco es el resultado del concurso de ideas de arquitectura convocado por el Puerto de Huelva del que resultó ganador el estudio LAR Arquitectura en colaboración con la ingeniería Arsenco, coordinados por el arquitecto onubense Sergio Gómez Melgar.
El edificio consta de dos plantas que se alinean en su totalidad al perímetro de la parcela cabecera del Polígono Pesquero Norte, dejando un gran vacío en su interior oculto desde el exterior, donde se producen las labores de carga y descarga de camiones ligadas a la logística.
El diseño del complejo rompe con la linealidad del polígono y construye una fachada que muestra su cara más amable al exterior, reservando el interior para un espacio industrial flexible y funcional. Esta solución se pretende hacer extensiva al resto del polígono, consiguiendo la completa regeneración urbana de la zona.
El edificio combina materiales tradicionales de la industria naval como la madera, el acero y la fundición, con otros más propios de la industria de la construcción como el hormigón prefabricado, la cerámica y el vidrio. Incorpora la vegetación autóctona integrada en el mismo ADN del edificio, en forma de grandes paños de jardines verticales, muros vegetales, terraplenes de tapizantes y macizos de plantas aromáticas y de flores.
Su imponente cubierta, de gran expresividad y presencia exterior; y cuya forma quebrada rinde homenaje a la mejor arquitectura industrial de nuestra ciudad, se retroilumina de noche y aspira a convertirse en icono del nuevo frente portuario de Huelva.
Como en todas las obras del estudio onubense LAR Arquitectura, cuya obra construida ha sido reconocida con varios premios internacionales en el ámbito de la eficiencia energética en edificios, el proyecto de Ciudad del Marisco incorpora soluciones innovadoras para una construcción más sostenible. Estas soluciones han sido desarrolladas en colaboración con la ETS de Ingeniería de la Universidad de Huelva
QCD anomalies in electromagnetic processes: A solution to the γ → 3 π puzzle
Get PDFIn this work, the
γ
→
3
π
form factor is calculated within the Dyson-Schwinger equations framework using a contact interaction model within the so-called modified rainbow ladder truncation. The present calculation takes into account the pseudovector component in the pion Bethe-Salpeter amplitude (BSA) and
π
−
π
scattering effects, producing a
γ
→
3
π
anomaly that is
1
+
6
R
2
π
larger than the low energy prediction. Here
R
π
is the relative ratio of the pseudovector and pseudoscalar components in the pion BSA; with our parameters’ input, this correction raises the
γ
→
3
π
anomaly by around 10%. The main outcome of this work is the unveiling of the origin of such a correction, which could be a possible explanation of the discrepancy between the existing experimental data and the low energy prediction. Moreover, it is highlighted how the magnitude of the anomaly is affected in effective theories that require an irremovable ultraviolet cutoff. We find that for both the anomalous processes
π
→
2
γ
and
γ
→
3
π
, the missing contribution to the anomaly can be compensated by the additional structures related with the quark anomalous magnetic moment.This work was supported by National Natural Science
Foundation of China (Grant No. 12135007). K. R. is
supported by the Spanish MICINN Grant No. PID2022-
140440NB-C22, and regional Andalusian Project No. P18-
FR-5057.Ciencias Integrada
Lithofacies and Sediment Sequences of a Microtidal, Wave-Dominated Tropical Estuary in Somone Lagoon (Senegal, West Africa)
Get PDFEstuary sedimentary sequences have been the focus of several papers in the last decades;
however, the majority these papers were centered in mesotidal and macrotidal estuaries of the
middle latitudes. This present paper studies, from a sedimentological point of view, the infilling of
a microtidal, wave-dominated tropical estuary, where wide tidal flats, mangroves and sabkhas are
developed. Somone Lagoon is a Senegalese protected environment, very rich from an ecological
point of view and with a definitive touristic vocation. For this work, 14 piston cores were studied.
Additionally, the grain size, calcium carbonate and organic matter contents of 61 sediment samples
vertically distributed in these cores were analyzed. The distribution of facies and the vertical
sequences of sediments show the influence of the tropical seasonal fluctuations of fluvial sediment
supply and evaporation processes. A high degree of bioturbation and an elevated organic content
can be interpreted as the result of a high capacity of retention of the organic material into the estuary
influenced by the weak tidal currents typical of a microtidal regime. These processes, acting since
the last Holocene invasion of sea level, caused an advanced state of infilling of this estuarine system
where both flood tidal deltas and bay head deltas prograde above the fine facies of the central domain
of the estuary.This research was funded by the Direction of Geology of the Ministry of Mines and Geology. Republic of Senegal, Project: Inventory, Evaluation and valorization of geosites throughout the territory of Senegal. Project number C_P2-MMG_059.Ciencias de la Tierr
Unlocking the Dual Helical Ribbon for rotational viscosity measurements of highly heterogeneous fluids
Get PDFRoad bituminous binders are becoming more complex since, to enhance properties and/or engineer circular
economy, the conventional binder is enriched with modifiers of different nature giving birth to a final-product
recognisable as highly heterogeneous fluid. The assessment of these materials relies on rheological measurements;
however, existing testing equipment are designed for homogeneous fluids, proving to be often inadequate.
In fact, rotational testing lacking mixing efficiency during measurements, can compromise sample stability,
resulting in non-representative results Lo Presti et al. (2014). To address these challenges, a dual helical ribbons
(DHR) was purposefully created and successfully employed in prior studies to measure the rotational viscosity of
highly heterogeneous asphalt materials Giancontieri et al. (2019). While the DHR effectiveness has been
extensively discussed in earlier investigations, this study aims to contribute to the scientific community at large
by providing: state-of-the-art on improving mixing efficiency of highly heterogeneous fluids, rationalizing the
choice of the DHR geometry comprehensive technical details for realising any DHR, verified through numerical
modelling Calibration with model input parameters achieved by adopting the Rieger and Novak method, and
finally design validation. The authors aim for the broader material science community to benefit from this
investigation, enabling technologists to independently develop DHR devices and explore new applications.Ingeniería Química, Química Física y Ciencias de los Materiale
Inclusive teaching materials of Business Economy for the University entrance exam
Get PDFBajo el amparo de los proyectos europeos Erasmus Plus KA201, INDIe e INDIe4All, la Universidad Politécnica de Cartagena (UPCT) ha desarrollado las plataformas INDIeOpen e INDIeAutor para fomentar una educación abierta y accesible a través de una herramienta que permite a los docentes generar materiales inclusivos. Con la colaboración de asociaciones representativas de estudiantes con discapacidad y necesidades especiales de apoyo educativo, se han elaborado y publicado Recursos Educativos Abiertos (REA) para la asignatura "Economía de la Empresa" de 2º de Bachillerato. Estos recursos han sido útiles para que los estudiantes preparen las pruebas EBAU para esta asignatura en 2022. La universidad apuesta por una educación más inclusiva y proporciona a los docentes los recursos necesarios para lograrlo, asumiendo el reto de una educación de calidad y cumpliendo con el Objetivo de Desarrollo Sostenible 4. El trabajo presenta los resultados del proyecto, estadísticas de uso y futuras líneas de investigación.The Universidad Politécnica de Cartagena (UPCT) has developed the INDIeOpen and INDIeAutor platforms under the guidance of the European Erasmus Plus KA201, INDIe, and INDIe4All projects to promote open and accessible education through a tool that enables teachers to create inclusive teaching materials. With the collaboration of associations that represent these groups of students with disabilities and who need extra educational support, some materials have been generated for the subject "Business Economics" in the last year of Highschool. These published openly materials have helped students to get ready for the examination in the university entrance exams in 2022. The university strives for a more inclusive education and gives teachers the tools they need to do so, taking on the challenge of a high-quality education and fulfilling the SDG 4. The results are shown in the paper, as well as the statistics of use and the future lines of research
The implementation of flamenco in Andalusian educational curriculum: between tradition and technological innovation
Get PDFEl artículo pone de manifiesto el valor del flamenco como herramienta pedagógica. Para ello, la metodología utilizada incluye encuestas a futuros docentes para medir sus percepciones acerca del efecto que tendría el flamenco en las habilidades de valoración del patrimonio: musicales, emocionales, educativas, sociales y de participación cultural del alumnado. Tras la consecución de los datos, mediante estadísticos descriptivos, se observa la alta valoración que los potenciales docentes dan al flamenco como herramienta pedagógica. Esto se contrapone con la falta de conocimiento específico y la escasa participación cultural en el flamenco de estos. Finalmente, se muestra una posible solución para la correcta implantación del flamenco en el currículo educativo a través de la creación de auxiliares de flamenco en las aulas y la utilización de recursos tecnológicos.The article highlights the value of flamenco as a pedagogical tool. For this, the methodology used includes surveys of future teachers to measure their perceptions about the effect that flamenco would have on the heritage appraisal, musical, emotional, educational, social and cultural participation skills of the students. After obtaining the data, through descriptive statistics, the high valuation that potential teachers give to flamenco as a pedagogical tool is observed. This contrasts with their low specific knowledge and their low cultural participation in flamenco. Finally, a possible solution is shown for the correct implementation of flamenco in the educational curriculum through the creation of flamenco aid in the classroom, and the use of technological resources
Segmentando a los residentes de un lugar minero español: cuando las actitudes hacia el turismo no están unidas a las percepciones
Get PDFThis study uses a segmentation framework to categorize the residents of Minas de Riotinto, a mining town in Andalusia, Spain, based on their perceptions of the personal and community effects of tourism. These segments were then classified according to their tourism attitudes, utilizing a three-dimensional approach encompassing affective, cognitive, and behavioral elements. For this purpose, a cluster analysis and the Kruskal-Wallis test were successively applied to the responses of 346 residents. The results revealed three main groups of residents: “interested and enthusiastic supporters”, “disinterested and moderate supporters” and “incongruous and impulsive residents”. Contrary to our expectations, all groups showed favorable affective attitudes towards tourism development in their region. However, significant differences emerged between groups concerning the cognitive and behavioral dimensions of their attitudes.Este artículo segmenta a los residentes de la localidad minera de Minas de Riotinto (Andalucía, España)
según sus percepciones sobre los efectos personales y comunitarios del turismo y clasifica los segmentos
resultantes de acuerdo con sus actitudes hacia el turismo, utilizando para ello un enfoque tridimensional
que diferencia tres componentes actitudinales: afectiva, cognitiva y conductual. Para ello, se aplica
sucesivamente un análisis de conglomerados y el test de Kruskal-Wallis a las respuestas de una muestra de
346 vecinos de la localidad. Los resultados obtenidos permiten identificar tres grandes grupos de residentes:
“partidarios interesados y entusiastas”, “partidarios desinteresados y moderados” y “residentes
incongruentes e impulsivos”. Contrariamente a lo esperado, todos los grupos tienen actitudes afectivas
favorables hacia el desarrollo turístico en su territorio. Sin embargo, existen diferencias significativas entre
grupos respecto a las dimensiones cognitivas y conductuales de la actitud.Dirección de Empresas y Marketin