Search results for "ONTOLOGIA"
showing 10 items of 646 documents
150 años del descubrimiento del yacimiento cámbrico de Murero (Cadenas Ibéricas, NE España).
2013
The lower-middle Cambrian palaeontological site of Murero (Cadenas Ibéricas, NE Spain) is a classical locality of the Cambrian in Europe. The site was first reported by the French geologist Edouard de Verneuil in 1862, and now it achieves 150 years of geological works contributing to a better knowledge of the Cambrian Period. Murero is an exceptional Lagerstätte because the coexistence of both skeletal and soft-bodied groups along a continuous record of ca. 8 million years, which is subdivided into 14 trilobite zones. Murero was the first palaeontological site in Spain to obtain the highest protection figure (Bien de Interés Cultural, BIC) from the Spanish Administration in 1997. Since then…
Biostratigraphy of the Ribota and Huérmeda formations (Cambrian Series 2) in the Comarca del Aranda (Zaragoza province), Iberian Chains (NE Spain)
2022
This article presents a detailed biostratigraphic analysis of the Cambrian Series 2 Ribota and Huérmeda formations of four sections of the Iberian Chains (NE Spain), and a systematic study of their trilobite faunas. We identified four major assemblages: two in the middle part of the Ribota Formation, one at the base of the Huérmeda Formation and one at the top of the Huérmeda Formation. The studied species permit the assignment of these formations to the middle and upper Marianian and probably lower Bilbilian stages in the regional stratigraphic chart for the Iberian Peninsula, which correlates with an interval around the Cambrian Stage 3–4 boundary. The assemblages exhibit a great correlat…
The last of the large-sized tortoises of the Mediterranean islands
2022
Altres ajuts: CERCA Programme/Generalitat de Catalunya Altres ajuts: Operational Programme Research, Development and Education Project (CZ.02.2.69/0.0/0.0/16_027/0008360) Archaeological investigations carried out in the cave Zubbio di Cozzo San Pietro, Bagheria, Sicily, revealed the presence of a few skeletal elements of a large-sized tortoise in a funerary area dating to the Copper/Bronze Age. The tortoise has been AMS-dated revealing an age of 12.5 ± 0.5 kyr BP and therefore it pre-dates the funerary activities. The morphology of the retrieved skeletal elements differs from that of the only native tortoise currently living in Sicily, Testudo hermanni. The tortoise's size significantly exc…
Stratigraphic frame work of the type locality of Pirro Nord Mammal Faunal Unit (Late Villafranchian, Apricena south-eastern Italy)
2013
The fossiliferous karst deposits of the typical Pirro Nord Faunal Unit recently revived interest for the lithic tools documenting the human occurrence in southern Italy at Early Pleistocene. Therefore, a revision of the Pliocene to lowermost Pleistocene stratigraphic succession was needed. It was carried on with a twofold aim: to detail the stratigraphic architecture and the structural-depositional evolution of the “Apricena horst”, and to verify the chronostratigraphic constraints for the Pirro Nord F.U. in the type area of Apricena. The stratigraphic record has been subdivided in four units bounded by ubiquitous unconformity surfaces, often associated to evidence of sub-aerial exposure. F…
The importance of the nuclear glutathione in the cell proliferation
2009
The present thesis offers an insight in the importance of nuclear GSH in cell proliferation. The research was performed in three different cellular models of diverse proliferating activity: immortalized mouse embryonic fibroblasts 3T3, mammary adenocarcinoma cell line MCF7 and primary embryonic neuralonal culture. The results presented here provide evidence that suggest that the relationship between GSH level and telomerase activity, previously described by our group for 3T3 fibroblasts is a common phenomenon in mammalian cells. Reduced glutathione emerged as a driving force of cell cycle progression; high level of GSH coincided with the peak of telomerase activity and preceded the exponent…
Fenómenos mitocondriales y nucleares relacionados con la resistencia a la apoptosis. Importancia del estrés oxidativo
2009
En el presente trabajo se ha estudiado la relación entre el núcleo y la mitocondria y la importancia de la compartimentación del GSH durante la resistencia a la apoptosis inducida por el tratamiento con cisplatino. Así mismo, se ha evaluado la implicancia de la proteína bcl-2 en la compartimentación del GSH como mecanismo de resistencia a la muerte por apoptosis. Para ello se ha utilizado la cepa celular MCF7 wild type y un homólogo que sobre-expresa la proteína bcl-2.Los resultados muestran que el tratamiento con cisplatino detiene las células en la fase de proliferación, lo que provocaría la detención del ciclo celular y la muerte celular por apoptosis. La proliferación celular se desarro…
La hidrología médica a través de las revistas médicas valencianas (1841-1939)
2010
La propuesta de esta tesis doctoral es contribuir a conocer el estado de desarrollo de la hidrología médica a través del estudio de once de las revistas médicas más relevantes de la época, publicadas en Valencia entre los años 1841 y 1939. El material recuperado procede de siete de las revistas, recogiéndose todo lo publicado sobre la especialidad. Para su análisis, las publicaciones se han ordenado en tres inventarios bibliográficos que aportan 61 artículos originales, 101 notas y reseñas y 42 noticias. Siguiendo las líneas de investigación del Departamento de Historia de la Ciencia y Documentación y el Instituto de Historia de la Medicina y de la Ciencia López Piñero (CSIC-Universidad de …
Estudio sobre parámetros mecánicos y autoeficacia física percibida en la patada "Dolio Chagui" de Taekwondo
2009
El taekwondo es un deporte de lucha con golpeo donde se pueden utilizar tanto puños (para golpear al pecho) como piernas (para golpear al pecho y a la cara). Sin embargo, las piernas se utilizan en mayor medida que los puños.Durante el combate, los deportistas mantienen una distancia, denominada distancia de combate o de ejecución, que es clave para el éxito deportivo.Entre las acciones a realizar, el Dolio Chagui o patada circular a la cara, ofrece una mayor posibilidad de puntuar que las patadas dirigidas al pecho.En el presente estudio se analizan diversos parámetros mecánicos en la patada Dolio Chagui de taekwondo. Por otro lado, hemos comenzado a estudiar un parámetro psicológico como …
Le Faune insulari delle “terre rosse” del Gargano: una panoramica
2009
L’interpretazione heideggeriana di Aristotele nella "Vorlesung" del "Sommersemester" 1922 (Prima Parte)
2020
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