Revistas UPO (Universidad Pablo de Olivade)
Not a member yet
6006 research outputs found
Sort by
Cantarero, Luis Futbología Zaragoza, Editorial Pregunta, 2024, 170 páginas.
Full text linkReview of the book Futbología, by the author Luis Cantarero, edited by Editorial Question, 2024, 170 pages.Recensión del libro Futbología, del autor Luis Cantarero, editado por Editorial Pregunta, 2024, 170 páginas
La nueva decisión vinculante del Comité Europeo de Derechos Sociales (CCOO c. España): su insoslayable asunción por el Tribunal Supremo
Full text linkThis paper aims to contribute to the understanding of the new binding decision of the European Committee of Social Rights (adopted on 3 December 2024 in the case CCOO v. Spain, collective complaint no. 218/2022). Indeed, the author analyses the reaffirmation of the Committee's case law on protection in the event of unfair dismissal already established in relation to other countries (Finland, France and Italy) and with regard to Spain (in the previous decision UGT v. Spain of 20 March 2024, collective complaint no. 207/2022), as well as some elements that provide added value (reinstatement as an appropriate remedy for unfair dismissal, or effective compensation in the event of temporary contracts concluded in fraud of law). These new elements, highlighted in the concurring opinion, are accompanied by a consolidation of the control of conventionality. Finally, the author concludes by putting forward numerous reasons according to which the Committee's decisions on the merits must be implemented by means of the relevant legislative reform in Spain, as well as through unavoidable compliance by the Supreme Court (by respecting the constitutional mandate, by overcoming obsolete arguments and by having honest positive judicial willingness).El presente ensayo tiene como objeto contribuir a la comprensión de la nueva decisión vinculante del Comité Europeo de Derechos Sociales (adoptada el 3 de diciembre de 2024 en el caso CCOO c. España, reclamación colectiva n.º 218/2022). En efecto, el autor analiza la reafirmación de la jurisprudencia del Comité sobre protección en caso de despido improcedente ya sentada en relación con otros países (Finlandia, Francia e Italia) y con respecto a España (en la previa decisión UGT c. España de 20 de marzo de 2024, reclamación colectiva n.º 207/2022), así como algunos elementos que aportan un valor añadido (readmisión como reparación apropiada en caso de despido injustificado, o indemnización efectiva en caso de contratos temporales concluidos en fraude de ley). Estos elementos novedosos, realzados en el voto particular concurrente, van acompañados de una consolidación del control de convencionalidad. Por último, el autor concluye esgrimiendo numerosas razones de acuerdo con las cuales las decisiones de fondo del Comité han de ser implementadas mediante la pertinente reforma legislativa en España, así como a través del insoslayable cumplimiento por parte del Tribunal Supremo (por mandato constitucional, por superación de argumentos obsoletos y por honesta voluntad jurisdiccional positiva)
El muro di spina del Pecile de Villa Adriana: Aportaciones histórico-artísticas
Full text linkThese observations have come about during the study of historical restorations that took place on this archaeological site, and which brought us closer to both the modern and contemporary history of Hadrian's residence. During the process, which sought to understand and chronologically assign the numerous additions to the structures; the practical reuse of the remains; the "un"-restorations or the traditional paths, we took into account the analysis of the stratigraphy of the walls, texts and illustrated documents: all of which might illuminate substantial activities, which are poorly understood. Here, we propose to clear up the sources of incorrect attribution that have formed part of educational itineraries over several decades at the villa. Indeed, this search has brought about the opportunity to discern the possible presence some time ago, of structures that were seldom studied, and that have disappeared today.Estas notas surgen durante el estudio de las restauraciones históricas realizadas en este yacimiento, tema que nos ha acercado a la historia moderna y contemporánea de la residencia de Adriano. En el proceso de comprender y adscribir cronológicamente los numerosos añadidos, las reutilizaciones funcionales de los restos, las de-restauraciones o los recorridos tradicionales, hemos ido acompasando el análisis de la estratigrafía muraria al de los textos y documentos gráficos que pudiesen arrojar luz sobre estas intervenciones. Aquí, nos propusimos esclarecer el origen de una errónea atribución que formaba parte desde hacía varias décadas de los itinerarios pedagógicos de la villa, si bien esta búsqueda nos ha llevado a detectar la posible presencia, tiempo atrás, de estructuras hoy desaparecidas
Gobernanza e internacionalización en los resultados de las empresas: Un estudio de caso en Indonesia y Malasia
No full textObjective: This study aims to determine the effect of governance practices and the degree of internationalization on companies in Indonesia and Malaysia. Research on governance in Indonesia is interesting because of its inconsistent law enforcement and the existence of dominant family ownership that can expropriate external shareholders. Research Design & Methods: This study uses a sample of manufacturing companies located in Indonesia and Malaysia. The study uses panel data using independent governance variables and degree of internationalization. Findings: The results showed that governance variables using the proxy of independent commissioners, the board size, and the presence of female commissioners influence financial performance. At the same time, governance as of a proxy for the frequency of board meetings does not affect financial performance. The degree of internationalization found results that also affect financial performance. Companies that enter the international market also need good governance. Implications & Recommendations: Practical implications, Investors are expected to consider corporate governance and internationalization aspects when investing. As the research results presented previously show, several variables, such as independent commissioners, commissioner size, and export ratio, also affect company performance. Investors, especially in Indonesia, are advised to invest in companies with the optimal number of independent commissioners to get maximum returns. In addition, investors are advised to choose companies with the optimal number of boards of commissioners to maximize company performance. Contribution & Value Added: The research contributes by using a combination of corporate governance and internationalization issues that can benefit the company and the national economy.Objetivo: Este estudio pretende determinar el efecto de las prácticas de gobernanza y el grado de internacionalización en las empresas de Indonesia y Malasia. Diseño y métodos de investigación: Este estudio utiliza una muestra de empresas manufactureras ubicadas en Indonesia y Malasia. El estudio utiliza datos de panel con variables independientes de gobernanza y grado de internacionalización. Resultados: Los resultados muestran que las variables de gobernanza que utilizan el proxy de comisarios independientes, el tamaño del consejo y la presencia de comisarias influyen en los resultados financieros. El grado de internacionalización arrojó resultados que también afectan a los resultados financieros. Las empresas que entran en el mercado internacional también necesitan una buena gobernanza. Implicaciones y recomendaciones: Implicaciones prácticas, Se espera que los inversores tengan en cuenta los aspectos de gobierno corporativo e internacionalización a la hora de invertir. Como muestran los resultados de la investigación presentados anteriormente, diversas variables, como los comisarios independientes, el tamaño del comisario y el coeficiente de exportación, también afectan a los resultados de la empresa. Se aconseja a los inversores, especialmente en Indonesia, que inviertan en empresas con el número óptimo de comisarios independientes para obtener el máximo rendimiento. Además, se aconseja a los inversores que elijan empresas con el número óptimo de consejos de comisarios para maximizar el rendimiento de la empresa. Contribución y valor añadido: La investigación contribuye utilizando una combinación de cuestiones de gobierno corporativo e internacionalización que pueden beneficiar a la empresa y a la economía nacional
Molecular analysis of the symbiosis between Nostoc punctiforme and Oryza sativa.
Full text linkNostoc punctiforme is a filamentous, diazotrophic cyanobacteria capable of forming symbiotic relationships with diverse plant species (Álvarez et al., 2020; Álvarez et al., 2023). Given the widespread use of synthetic nitrogen fertilizers in rice cultivation and their associated environmental issues, biological nitrogen fixation (BNF) by cyanobacteria presents a promising alternative (Álvarez et al., 2023). However, the molecular mechanisms underpinning the symbiotic association between N. punctiforme and rice remain poorly understood. In well-characterized symbiotic interactions, such as those occurring between legumes and nitrogen-fixing rhizobial bacteria, the common symbiotic signalling pathway (CSSP) is activated. This process begins with Rhizobium secreting Nod factors in response to flavonoids released by compatible plants. Álvarez et al. (2022) demonstrated for the first time the expression of Nod-like proteins in N. punctiforme and the participation of the CSSP pathway in rice during symbiosis.
Based on these previous results, this study aims to elucidate the genetic basis of this interaction by characterizing orthologous genes in Nostoc related to the nodD regulatory gene in Rhizobium leguminosarum, which play a pivotal role in symbiosis by regulating the expresion of the genes involved in the generation of nod factors. Bioinformatic analyses were conducted to identify homologous sequences of nodD from R. leguminosarum in N. punctiforme, and structural modelling compared their potential functional roles. Three key nodD homologs with conserved DNA-binding and inducer recognition domains were found in N. punctiforme, called nodD1, nodD2 and nodD3. Using homologous recombination, loss-of-function nodD gene mutants were generated in N. punctiforme and characterized. Genetic characterization revealed the maintenance of wild type copies of genesnodD1 and nodD3 in their respective mutants, suggesting that those genes may be essential.
Preliminary symbiosis analysis results with different symbiotic plant species seem to indicate reduced root adherence, highlighting their possible involvement in stablishing symbiosis. Further symbiosis assays with rice are needed to evaluate endophytic colonization efficiency. These insights contribute to understanding microbial symbiosis and support the development of cyanobacteria-based biofertilizers for sustainable agriculture
Pharmaceutical contaminated water treatment with inmobilized bacteria in zeolite.
Full text linkPollution is one of the top three global challenges, along with biodiversity loss and climate change. Among the
pollutants, emerging contaminants are attracting more attention. These are natural or synthetic products that have
either recently appeared in the environment and there are concerns about their effects.
Pharmaceuticals can be found in these contaminants because they have increased in use over the last few decades, with
more than 3000 active ingredients.
These products can reach receiving waters and contaminate them, causing adverse effects in aquatic ecosystems. The
low efficiency of their treatment in wastewater treatment plants leads to the investigation of new methods to deal with
this pollutant. One of them is absorption by absorbents such as zeolite and another is biodegradation by living
organisms such as bacteria.
In this study, we aimed to combine both approaches. To do this, we extracted silicate from rice husk ash under different
conditions to find the best one. With this silicate, zeolite is synthesised under different parameters to determine the most
suitable ones. This is verified by X-ray difraction to see if the synthesised zeolite contains only zeolite X. Three different
treatments are then used to attach the zeolite to a polycarbonate substrate so that bacteria can form a biofilm on it. The
successful attachment of the zeolite to the polycarbonate is expected to promote bacterial growth and biodegradation
studies will then be carried out under these conditions
Valorization of Seaweed and Seagrass Waste in Flocculant Synthesis.
Full text linkMotivation: The accumulation of tide waste generates serious environmental and economic impacts on coastlines around the world. Among the most negative effects are the emission of greenhouse gases and the death of various marine species, caused by the creation of anoxic habitats due to eutrophication. In this context, there is growing interest in exploring the potential of tide waste as a source of cellulose materials for the production of flocculants, which would be used in wastewater treatment, aligning with the principles of the circular economy. [1] This approach also enables the production of new functionalized products, including flocculants synthesized from the extracted cellulose, in order to reduce dependence on petrochemical flocculants such as polyacrylamide.[2]Methods: The collected tide waste was subjected to a water washing process, followed by detailed chemical characterization. Experiments were then designed to investigate the morphological properties of the tide waste, specifically the ones derived from Halopteris scoparia, using various cooking conditions and the soda-anthraquinone process to extract cellulose. Lignin removal was carried out using hydrogen peroxide, and the morphological characterization of the product was performed with specialized equipment, the Morfi Lab (Techpap).[3]Results: The results showed key properties in the extracted cellulose fibers, through statistical analysis that helped identify the most suitable samples for achieving efficient flocculation. These findings highlight the use of tide waste as a sustainable alternative to traditional chemical flocculants, suggesting a promising path towards reducing the environmental impact derived from the use of chemicals in water treatment. Additionally, the utilization of these waste materials as resources in the circulareconomy helps mitigate the accumulation of marine debris, transforming it into a valuable material for industrial applications
Viver e conviver: As competências sociais como motor de mudança
No full textLearning to live and coexist with others is the fundamental purpose of education in our country. Social skills are the first door for people to function correctly in society. This involves learning what is right and wrong, as well as the skill of how to put it into practice. The objective of the following article is to justify the importance of training in social skills for students. A review of updated literature on bullying, coexistence, prevalence in our country and social skills has been developed. It is vitally important to work on issues like this, since in Spain, 7.2% of the students in the classrooms have felt like victims of bullying at some point. Thus, working on social skills with students is committed to improving self-knowledge, self-esteem and respect for others, thus promoting tolerance and civility among students, reducing, therefore, situations of exclusion and bullying in the classrooms.Aprender a vivir y convivir con los demás supone la finalidad fundamental de la educación de nuestro país. Las habilidades sociales son la primera puerta para que las personas puedan desenvolverse en la sociedad correctamente. Esto pasa por aprender qué es lo que está bien y mal, así como la destreza de cómo ponerlo en práctica. El objetivo del siguiente artículo es justificar la importancia de la formación en habilidades sociales en el alumnado. Se ha desarrollado una revisión de literatura actualizada en materia de acoso escolar, convivencia, prevalencia en nuestro país y habilidades sociales. Es de vital importancia que se trabaje en temáticas como esta, ya que España, el 7,2% del alumnado que hay en las aulas, se ha sentido víctima de acoso escolar en algún momento. Así pues, trabajar las habilidades sociales con el alumnado es apostar por la mejora del autoconocimiento, autoestima y respeto a los demás, favoreciendo así la tolerancia y el civismo entre el alumnado; disminuyendo, por ende, las situaciones de exclusión y acoso escolar de las aulas.Imparare a vivere e a convivere con gli altri è l'obiettivo fondamentale dell'istruzione nel nostro Paese. Le abilità sociali sono il primo passo per essere in grado di funzionare bene nella società. Ciò implica l'apprendimento di ciò che è giusto e sbagliato, nonché l'abilità di metterlo in pratica. Lo scopo del seguente articolo è quello di giustificare l'importanza della formazione sulle abilità sociali per gli studenti. È stata sviluppata una rassegna aggiornata della letteratura sul bullismo, la convivenza, la diffusione nel nostro Paese e le abilità sociali. È di vitale importanza lavorare su temi come questo, dal momento che in Spagna il 7,2% degli studenti in classe è stato prima o poi vittima di bullismo. Pertanto, lavorare sulle abilità sociali con gli alunni è un impegno per migliorare la conoscenza di sé, l'autostima e il rispetto per gli altri, favorendo così la tolleranza e il senso civico tra gli alunni, riducendo così le situazioni di esclusione e bullismo in classe.Aprender a viver e a conviver com os outros é o objetivo fundamental da educação no nosso país. As competências sociais são o primeiro passo para que as pessoas sejam capazes de funcionar bem na sociedade. Trata-se de aprender o que é certo e errado, bem como a capacidade de o pôr em prática. O objetivo do artigo que se segue é justificar a importância do treino de competências sociais para os alunos. Foi elaborada uma revisão bibliográfica actualizada sobre o bullying, a convivência, a prevalência no nosso país e as competências sociais. É de vital importância trabalhar questões como esta, uma vez que, em Espanha, 7,2% dos alunos na sala de aula foram vítimas de bullying em algum momento. Por conseguinte, trabalhar as competências sociais com os alunos é um compromisso para melhorar o auto-conhecimento, a autoestima e o respeito pelos outros, favorecendo assim a tolerância e o civismo entre os alunos, reduzindo assim as situações de exclusão e de bullying na sala de aula
Las Redes migratorias chinas en Europa y el equilibrio comercial
Full text linkThe aim of this paper is to estimate the Chinese migration networks effect on its commercial balance. We have measured the impact of Chinese emigration to European countries on the exportation and compared it with the effects on importation through a gravity model estimation in which, emigration was included as an explicative variable as well as GDP/Capita, distance and other dummy variables. Our analyses, based on a panel GLS regression of 32 trade European partners of China in 1960, 1970, 1980, 1990 and 2000, have revealed that the effect of emigration on the import is slightly more important than the exportation effect. The main important finding of the study is that a ten percent increase in the emigration from China to European countries decreases the real value of the commercial balance by 0.18 %.El objetivo de este trabajo es estimar el efecto de las redes migratorias chinas sobre su balanza comercial. Hemos medido el impacto sobre la exportación de la emigración china a los países europeos y lo hemos comparado con los efectos sobre la importación mediante la estimación de un modelo de gravedad en el que, además del PIB/Cápita, la distancia y otras variables ficticias, se incluyó la emigración como variable explicativa. Nuestros análisis, basados en una regresión GLS de panel de 32 socios comerciales europeos de China en 1960, 1970, 1980, 1990 y 2000, han revelado que el efecto de la emigración sobre la importación es ligeramente más importante que el efecto sobre la exportación. La principal conclusión del estudio es que un aumento del diez por ciento en la emigración de China a los países europeos disminuye el valor real de la balanza comercial en un 0,18 %
Condor dei Caraibi: Appunti per l'analisi iconografica degli amuleti bimorfi Huecoidi
No full textAmong the many ancestral Caribbean vestiges in Puerto Rican artistic heritage, the Huecoid legacy remains largely unexplored. Since its revolutionary discovery, several interdisciplinary efforts have been invested in studying Huecoid culture and its material remains. However, as customary in the study of pre-Hispanic objects, a predominantly archeological approach completely overshadows the art historical perspective. This paper analyzes the raptorial bird or “condor” motif in Huecoid art, exploring its symbolic purpose and establishing possible ties with the culture’s place of origin within the American continent. By assessing parallelisms between related cultures, this study suggests notable pointers to craft a preliminary iconographic analysis of the most distinctive artworks in Huecoid visual repertoire: ignored treasures of Puerto Rican art.Entre los vestigios artísticos del Caribe ancestral, el legado artístico de la cultura huecoide en el patrimonio puertorriqueño permanece a grandes rasgos inexplorado. Desde su revolucionario hallazgo, se han invertido varios esfuerzos interdisciplinarios en estudiar los restos materiales huecoides. Sin embargo, la perspectiva histórico-artística se ve considerablemente opacada por la mirada arqueológica que suele predominar sobre los objetos prehispánicos. El presente artículo pretende analizar el motivo del ave rapaz o «cóndor» en la producción plástica de la cultura huecoide, en aras de indagar su función simbólica y establecer posibles vínculos con su lugar de procedencia en el continente americano. Identificando paralelismos entre culturas afines, se proponen indicios para realizar un análisis iconográfico preliminar de la manifestación artística más distintiva del repertorio visual huecoide: tesoro ignorado del arte puertorriqueño.Tra le vestigia artistiche dei Caraibi ancestrali, l'eredità artistica della cultura Huecoide nel patrimonio portoricano rimane in gran parte inesplorata. Dalla sua scoperta rivoluzionaria, sono stati investiti numerosi sforzi interdisciplinari nello studio dei resti materiali Huecoidi. Tuttavia, la prospettiva storico-artistica è notevolmente messa in ombra dall'ottica archeologica, che predomina sugli oggetti precolombiani. Questo articolo si propone di analizzare il motivo iconografico dell'uccello rapace, o "condor," nella produzione plastica della cultura Huecoide, per indagare la sua funzione simbolica e stabilire possibili collegamenti con il suo luogo di origine nel continente americano. Individuando parallelismi tra culture affini, si propongono indizi per effettuare un'analisi iconografica preliminare della manifestazione artistica più distintiva del repertorio visivo Huecoide: un tesoro ignorato dell'arte portoricana