Search results for "Tales"
showing 10 items of 928 documents
Killer toxin of Hanseniaspora uvarum
1990
The yeast Hanseniaspora uvarum liberates a killer toxin lethal to sensitive strains of the species Saccharomyces cerevisiae. Secretion of this killer toxin was inhibited by tunicamycin, an inhibitor of N-glycosylation, although the mature killer protein did not show any detectable carbohydrate structures. Culture supernatants of the killer strain were concentrated by ultrafiltration and the extracellular killer toxin was precipitated with ethanol and purified by ion exchange chromatography. SDS-PAGE of the electrophoretically homogenous killer protein indicated an apparent molecular mass of 18,000. Additional investigations of the primary toxin binding sites within the cell wall of sensitiv…
Flowers and inflorescences of the seagrassPosidonia(Posidoniaceae, Alismatales)
2012
Premise of the study: The predominantly aquatic order Alismatales displays a highly variable fl ower groundplan associated with a diverse range of developmental patterns. We present the fi rst detailed description of fl ower anatomy and development in Posidonia , the sole genus of the seagrass family Posidoniaceae. Existing accounts provide confl icting interpretations of fl oral and infl orescence structure, so this investigation is important in clarifying morphological evolution within this early-divergent monocot order. • Methods: We investigated two species of Posidonia using light microscopy and scanning electron microscopy. Our observations are interpreted in the framework of a recent…
La transparencia y la rendición de cuentas en redes sociales. Un caso de conflictos mineros en Latinoamérica
2021
Diversos estudios muestran un creciente uso del Internet y las redes por parte de grandes empresas para divulgar información social y medioambiental, ampliando la rendición de cuentas y la transparencia. No obstante, aún no existe claridad sobre los pros y contras de dicho proceso. Este trabajo plantea la necesidad de una reinterpretación crítica de la transparencia y la rendición de cuentas sociales y medioambientales a través de las redes sociales. Para ello, retoma algunos argumentos de la perspectiva dialógica de la rendición de cuentas, así como planteamientos del filósofo coreano Byung-Chul Han. Se estudia el caso de la compañía minera Vale, caracterizando la forma en qu…
La "Hermenéutica del sí" de Paul Ricoeur. Entre Descartes y Nietzsche
2006
This paper analyses P. Ricoeur's proposal about personal identity, entitled hermeneutics of the self, which aims to fill a halfway philosophical place between Descartes and Nietzsche. The author of Soimême comme un autre offers a narrative solution that will be critically considered according to the relation that the hermeneutics of the self establishes between philosophy and literature.
Síntesis de los estudios sobre moluscos continentales neógenos del sector septentrional de la Depresión de Teruel: período 1775-1998
2006
Se recopila y analiza la información que se considera más relevante y se encuentra contenida en los estudios realizados sobre el registro fósil de los moluscos neógenos del sector septentrional de la Depresión de Teruel en el período comprendido entre los años 1775 y 1998. Se contabilizan, por una parte, el número total de taxones diferentes mencionados en cada trabajo y, por otra, sólo el número de citas efectuadas a nivel de especie en cada uno de ellos. Estas últimas se organizan en tres categorías que reciben el nombre de citas nuevas, especies nuevas y citas repetidas. Se propone, a partir de la información contenida en cada trabajo, el número de taxones contemplados, y la tipología de…
Creença i realitat en William James
2008
This paper is devoted to analyse both the epistemology and ontology of James's pragmatism and his metaphysical proposals. The conclusions are: first, that James did not defend a metaphysical realism, but a antirealist realism; and secondly that this position was what he needed to defend the possibility of human freedom and religious experience.
Isolation and characterisation of Nocardioides sp. SP12, an atrazine-degrading bacterial strain possessing the gene trzN from bulk- and maize rhizosp…
2003
International audience; We report the characterisation of Nocardioides sp. SP12, an atrazine-degrading bacteria isolated from atrazine-treated bulk- and maize rhizosphere soil. Based on 16S rDNA alignment, strain SP12 showed close phylogenic relationships with Nocardioides sp. C157 and Nocardioides simplex. Internal transcribed spacer (ITS) sequences of strain SP12 were longer than those of other Nocardioides sp. and present Ala- and Ile-tRNA unlike Actinomycetales. Nocardioides sp. SP12 presents a novel atrazine catabolic pathway combining trzN with atzB and atzC. Atrazine biodegradation ends in a metabolite that co-eluted in HPLC with cyanuric acid. This metabolite shows an absorption spe…
Parroquia del Santísimo Cristo de la Providencia: Estudio de las variaciones artístico-estructurales producidas a lo largo de su historia
2000
La Iglesia Parroquial y Casa-Abadía de Fuente la Higuera
1996
Understand and optimize mental strategies during motor learning
2022
Motor imagery-based motor learning, also known as mental practice, can improve motor performance. However, questions remain concerning the mechanisms involved in mental practice, at the neurophysiological and behavioral levels. In a first study, we show an increase of short-interval intracortical inhibition during motor imagery, supporting the hypothesis that motor imagery induces the generation of an inhibited motor command. In a second study, we show modulations in functional connectivity between the cerebellum and the primary motor cortex following a mental practice session, corroborating at the neurophysiological level the hypothesis of the involvement and updating of internal models af…