419 research outputs found

    Inscripciones de Agudo (Baetica, conventus Cordubensis) y Alhambra (Hispania citerior, conventus Carthaginiensis)

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    El número de epígrafes romanos en la provincia de Ciudad Real, donde había muy pocos testimonios cuando comenzaron los trabajos de la nueva edición de CIL II, ha crecido mucho en los últimos años. Una gran parte de los nuevos descubrimientos fue mérito de Géza Alföldy, quien recorrió en muchas ocasiones este territorio y consiguió probar que había tenido una gran intensidad de hábito epigráfico, similar al de otras zonas de Hispania, y que gran parte de ese impulso correspondía al gobierno de Augusto. Presentamos aquí dos epígrafes de diferente naturaleza, procedentes de dos puntos situados en los extremos occidental y oriental de la provincia

    Inscripciones de Fuencaliente (addendum a ZPE 67, 1987) y Puebla de Don Rodrigo (Baetica, conventus Cordubensis)

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    La redacción de este trabajo se ha realizado en el marco del proyecto HUM-2006-07904, financiado por el Ministerio de Educación y Ciencia de España, y como complemento al proyecto HUM-2006-04596

    Los discursos demográficos como herramienta político-mediática: El caso de la prensa española

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    In this article, we analyse media information and opinion on demographics through a qualitative content analysis based on the conceptual coding and relational categorisation of a sample of press articles published by the Spanish newspapers ABC, El País, and eldiario.es between January 2017 and June 2021. The results show differences between conservative and progressive media in terms of the editorial policy of each newspaper, the type of experts consulted, the demographic discourse used, and the political intentionality of the news. There are also notable differences regarding the use of inappropriate or ethically questionable data.En este artículo proponemos el estudio de la información y opinión sobre demografía a partir de un análisis de contenido cualitativo basado en la codificación conceptual y categorización relacional de una muestra de artículos del ABC, El Mundo, El País y eldiario.es publicados en formato digital entre enero de 2017 y junio de 2021. Los resultados arrojan diferencias entre los medios conservadores y progresista en la línea editorial del medio, el tipo de expertos/as consultados/as, el discurso demográfico que utilizan y la intencionalidad política de la noticia. Asimismo, se aprecia otras diferencias notables respecto al uso de datos inadecuados o éticamente cuestionables

    Seasonal and Sexual Differences in the Microbiota of the Hoopoe Uropygial Secretion

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    The uropygial gland of hoopoe nestlings and nesting females hosts bacterial symbionts that cause changes in the characteristics of its secretion, including an increase of its antimicrobial activity. These changes occur only in nesting individuals during the breeding season, possibly associated with the high infection risk experienced during the stay in the hole-nests. However, the knowledge on hoopoes uropygial gland microbial community dynamics is quite limited and based so far on culture-dependent and molecular fingerprinting studies. In this work, we sampled wild and captive hoopoes of different sex, age, and reproductive status, and studied their microbiota using quantitative polymerase chain reaction (qPCR), fluorescence in situ hybridization (FISH) and pyrosequencing. Surprisingly, we found a complex bacterial community in all individuals (including non-nesting ones) during the breeding season. Nevertheless, dark secretions from nesting hoopoes harbored significantly higher bacterial density than white secretions from breeding males and both sexes in winter. We hypothesize that bacterial proliferation may be host-regulated in phases of high infection risk (i.e., nesting). We also highlight the importance of specific antimicrobial-producing bacteria present only in dark secretions that may be key in this defensive symbiosis. Finally, we discuss the possible role of environmental conditions in shaping the uropygial microbiota, based on differences found between wild and captive hoopoes.This work was supported by the Spanish Ministry of Economy and Competitiveness and European (FEDER) funds (CGL2013-48193-C3-1-P/BOS, CGL2013-48193-C3-2-P/BOS, CGL2017-83103-P), and the Junta de Andalucía (RNM 339, RNM 340). S. M. Rodríguez-Ruano received a grant from the Spanish Ministry of Science and Innovation (FPI program)

    The microbiome of the uropygial secretion in hoopoes is shaped along the nesting phase

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    Microbial symbiont acquisition by hosts may determine the effectiveness of the mutualistic relationships. A mix of vertical and horizontal transmission may be advantageous for hosts by allowing plastic changes of microbial communities depending on environmental conditions. Plasticity is well known for gut microbiota but is poorly understood for other symbionts of wild animals. We here explore the importance of environmental conditions experienced by nestling hoopoes (Upupa epops) during the late nesting phase determining microbiota in their uropygial gland. In cross-fostering experiments of 8 days old nestlings, “sibling-sibling” and “mother-offspring” comparisons were used to explore whether the bacterial community naturally established in the uropygial gland of nestlings could change depending on experimental environmental conditions (i.e., new nest environment). We found that the final microbiome of nestlings was mainly explained by nest of origin. Moreover, cross-fostered nestlings were more similar to their siblings and mothers than to their stepsiblings and stepmothers. We also detected a significant effect of nest of rearing, suggesting that nestling hoopoes acquire most bacterial symbionts during the first days of life but that the microbiome is dynamic and can be modified along the nestling period depending on environmental conditions. Estimated effects of nest of rearing, but also most of those of nest of origin are associated to environmental characteristics of nests, which are extended phenotypes of parents. Thus, natural selection may favor the acquisition of appropriated microbial symbionts for particular environmental conditions found in nests.Support by funding was provided by Spanish Ministerio de Economía y Competitividad, European funds (FEDER) (CGL2013-48193-C3-1-P, CGL2013-48193-C3-2-P), and Junta de Andalucía (P09-RNM-4557). AM-G had a predoctoral grant from the Junta de Andalucía (P09-RNM-4557).Peer reviewe

    An ontology-based secure design framework for graph-based databases

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    Graph-based databases are concerned with performance and flexibility. Most of the existing approaches used to design secure NoSQL databases are limited to the final implementation stage, and do not involve the design of security and access control issues at higher abstraction levels. Ensuring security and access control for Graph-based databases is difficult, as each approach differs significantly depending on the technology employed. In this paper, we propose the first technology-ascetic framework with which to design secure Graph-based databases. Our proposal raises the abstraction level by using ontologies to simultaneously model database and security requirements together. This is supported by the TITAN framework, which facilitates the way in which both aspects are dealt with. The great advantages of our approach are, therefore, that it: allows database designers to focus on the simultaneous protection of security and data while ignoring the implementation details; facilitates the secure design and rapid migration of security rules by deriving specific security measures for each underlying technology, and enables database designers to employ ontology reasoning in order to verify whether the security rules are consistent. We show the applicability of our proposal by applying it to a case study based on a hospital data access control.This work has been developed within the AETHER-UA (PID2020-112540RB-C43), AETHER-UMA (PID2020-112540RB-C41) and AETHER-UCLM (PID2020-112540RB-C42), ALBA (TED2021-130355B-C31, TED2021-130355B-C33), PRESECREL (PID2021-124502OB-C42) projects funded by the “Ministerio de Ciencia e Innovación”, Andalusian PAIDI program with grant (P18-RT-2799) and the BALLADER Project (PROMETEO/2021/088) funded by the “Consellería de Innovación, Universidades, Ciencia Sociedad Digital”, Generalitat Valenciana

    Article Lactiplantibacillus paraplantarum BPF2 and Pediococcus acidilactici ST6, Two Bacteriocinogenic Isolated Strains from Andalusian Spontaneous Fermented Sausages

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    Traditional spontaneously fermented foods are well known for their sensory and safety properties, which is mainly due to their indigenous microflora. Within this group of food, Mediterranean dry-cured sausages stand out as a significant source of lactic-acid bacterial strains (LAB) with biotechnological properties, such as their antimicrobial activity. The aim of this study was to investigate the biodiversity of antagonistic LAB strains from different Andalusian traditional sausages, such as salchichón and chorizo. First, a screening was carried out focusing on the antimicrobial activity against foodborne pathogens, such as Listeria monocytogenes, Escherichia coli, Clostridium perfringens, and Staphylococcus aureus, selecting two strains due to their higher antibiosis properties, both in agar and liquid media. These bacteria were identified as Lactiplantibacillus paraplantarum BPF2 and Pediococcus acidilactici ST6. In addition, genomic studies confirmed the presence of certain structural genes related to the production of bacteriocins. Finally, the culture supernatants of both strains were purified and analyzed by LC-MS/MS, obtaining the relative molecular mass and the amino acid sequence and identifying the peptides as the bacteriocins Pediocin-PA and Leucocin K. In conclusion, genomes and antimicrobial substances of P. acidilactici ST6, a Pediocin-PA producer, and Lpb. paraplantarum BPF2, a Leucocin K producer, isolated from Andalusian salchichón and chorizo, respectively, are presented in this work. Although further studies are required, these strains could be used alone or in combination as starters or protective cultures for the food industryPRIMA program, under BioProMedFood project (Reference Number: 2019-SECTION2-4; CUP: J34I19004820005)PRIMA program is supported by the European Union H2020 program and innovation progra

    Autophagy in Hematological Malignancies

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    Autophagy is a highly conserved metabolic pathway via which unwanted intracellular materials, such as unfolded proteins or damaged organelles, are digested. It is activated in response to conditions of oxidative stress or starvation, and is essential for the maintenance of cellular homeostasis and other vital functions, such as differentiation, cell death, and the cell cycle. Therefore, autophagy plays an important role in the initiation and progression of tumors, including hematological malignancies, where damaged autophagy during hematopoiesis can cause malignant transformation and increase cell proliferation. Over the last decade, the importance of autophagy in response to standard pharmacological treatment of hematological tumors has been observed, revealing completely opposite roles depending on the tumor type and stage. Thus, autophagy can promote tumor survival by attenuating the cellular damage caused by drugs and/or stabilizing oncogenic proteins, but can also have an antitumoral effect due to autophagic cell death. Therefore, autophagy-based strategies must depend on the context to create specific and safe combination therapies that could contribute to improved clinical outcomes. In this review, we describe the process of autophagy and its role on hematopoiesis, and we highlight recent research investigating its role as a potential therapeutic target in hematological malignancies. The findings suggest that genetic variants within autophagy-related genes modulate the risk of developing hemopathies, as well as patient survival

    Simuladores de Planificadores de Sistemas en Tiempo Real

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    En este artículo se presenta un simulador desarrollado que permite ejecutar diferentes planificadores de Tiempo Real, como el algoritmo de planificación cíclica, Algoritmo de la Razón Monótona (RMA) y EDF (Earliest Deadline First) para un conjunto de procesos con unos datos dados y muestra los resultados obtenidos. Mediante este simulador se facilita a los alumnos el aprendizaje de los algoritmos de planificación.This paper presents a simulator that has been developed to allow the execution of scheduling algorithms such as the Cyclic Non­preemptive Executive, Rate­monotonic scheduling (RMS) and Earliest Deadline First (EDF) for a given set of processes with different values and the simulator displays the results. With this simulator, students are able to learn about scheduling algorithms.Universidad de Granada: Departamento de Arquitectura y Tecnología de Computadores; Vicerrectorado para la Garantía de la Calidad
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