165 research outputs found
Nota sobre la utilización de hidrocarburos saturados como indicadores paleo-ambientales en rocas sedimentarias
Se han utilizado las series de n-alcanos e isoprenóides acÃclicos para caracterizar los paleoambientes deposicionales de diferentes sedimentos eocenos del borde oriental de la Depresión del Ebro.Nuestros resultados concuerdan con las interpretaciones paleoambientales establecidas en base a criterios paleontológicos y sedimentológicos. Se observa una clara predominancia de los n-alcanos con número par de átomos de carbono en el intervalo C20-C30, en todas las muestras marinas estudiadas, lo que es evidencia de actividad bacteriana sedimentaria
Nota sobre la utilización de hidrocarburos saturados como indicadores paleo-ambientales en rocas sedimentarias
Se han utilizado las series de n-alcanos e isoprenóides acÃclicos para caracterizar los paleoambientes deposicionales de diferentes sedimentos eocenos del borde oriental de la Depresión del Ebro.Nuestros resultados concuerdan con las interpretaciones paleoambientales establecidas en base a criterios paleontológicos y sedimentológicos. Se observa una clara predominancia de los n-alcanos con número par de átomos de carbono en el intervalo C20-C30, en todas las muestras marinas estudiadas, lo que es evidencia de actividad bacteriana sedimentaria
Miocarditis aguda: diagnóstico mediante resonancia magnética cardiaca
Cardiomyopathies are a common cause of morbidity
and mortality. Myocarditis, which is included
among specific cardiomyopathies, frequently presents
non-specific clinical manifestations and thus may be
difficult to diagnose, or even be misdiagnosed. Traditionally
employed diagnostic techniques, including
endomyocardial biopsy, have been shown to be of limited
value. Following its overall implantation in clinical
practice, cardiac magnetic resonance imaging (MRI) is
nowadays widely considered to be the best non-invasive
diagnostic tool available for diagnosing myocarditi
Kinetics and thermodynamics of the binding of riboflavin, riboflavin 5′-phosphate and riboflavin 3′,5′-bisphosphate by apoflavodoxins
Macrofossils in Raraku Lake (Easter Island) integrated with sedimentary and geochemical records: Towards a palaeoecological synthesis for the last 34,000 years
Macrofossil analysis of a composite 19m long sediment core from Rano Raraku Lake (Easter Island) wasrelated to litho-sedimentary and geochemical features of the sediment. Strong stratigraphical patterns are shown by indirect gradient analyses of the data. The good correspondence between the stratigraphical patterns derived from macrofossil (Correspondence Analysis) and sedimentary and geochemical data (Principal Component Analysis) shows that macrofossil associations provide sound palaeolimnological information in conjunction with sedimentary data. The main taphonomic factors influencing the macrofossil assemblages are run-off from the catchment, the littoral plant belt, and the depositional environment within the basin. Five main stages during the last 34,000 calibrated years BP (calyrBP) are characterised from the lithological, geochemical, and macrofossil data. From 34 to 14.6calkyrBP (last glacial period) the sediments were largely derived from the catchment, indicating a high energy lake environment with much erosion and run-off bringing abundant plant trichomes, lichens, and mosses into the centre of Raraku Lake. During the early Holocene the infilling of the lake basin and warmer conditions favoured the growth of a littoral plant belt that obstructed terrigenous input. Cladoceran remains and Solanaceae seeds are indicative of reduced run-off and higher values of N and organic C indicate increased aquatic and catchment productivity. From 8.7 to 4.5calkyrBP a swamp occupied the entire basin. The increase of Cyperaceae seeds reflects this swamp development and, with oribatid mites and coleopteran remains, indicates a peaty environment and more anoxic conditions in Raraku. At around 4.5calkyrBP dry conditions prevented peat growth and there is a sedimentary hiatus. About 800calyrBP, peat deposition resumed. Finally, in the last few centuries, a small lake formed within the surrounding swamp. Evidence of human activity is recorded in these uppermost sediments. © 2011 Elsevier Ltd.This research was funded by the Spanish Ministry of Science and Education through the projects LAVOLTER (CGL2004-00683/BTE), GEOBILA (CGL2007-60932/BTE) and CONSOLIDER GRACCIE (CSD2007-00067) and an undergraduate grant (BES-2008-002938 to N. Cañellas-Boltà ).Peer Reviewe
Chronic bovine besnoitiosis: histopathological findings and parasite distribution and load in subclinical cases [abstract]
PublishedPoster 50, Apicowplexa 201
Iberfault 2022. IV Reunión Ibérica sobre Fallas Activas y PaleosismologÃa. Volumen de resúmenes, Teruel, 7 al 10 de septiembre de 2022
SESIÓN 1: Tectónica activa y paleosismologÃa de las Cordilleras Béticas (I) SESIÓN 2: Tectónica activa y paleosismologÃa del resto de la PenÃnsula Ibérica SESIÓN 3: SismologÃa y sismicidad inducida SESIÓN 4: ArqueosismologÃa SESIÓN 5: Tectónica activa y paleosismologÃa de las Cordilleras Béticas (II) SESIÓN 6: Tectónica activa en el medio marino SESIÓN 7: Geodesia aplicada a tectónica activa SESIÓN 8: Modelización sismotectónic
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