Search results for "Canis"

Els cobejats fruits de l'oblit

2009

Los codiciados frutos del olvido

2008

Turmoil at Turrialba Volcano (Costa Rica): Degassing and eruptive processes inferred from high-frequency gas monitoring.

2016

Abstract Eruptive activity at Turrialba Volcano (Costa Rica) has escalated significantly since 2014, causing airport and school closures in the capital city of San José. Whether or not new magma is involved in the current unrest seems probable but remains a matter of debate as ash deposits are dominated by hydrothermal material. Here we use high‐frequency gas monitoring to track the behavior of the volcano between 2014 and 2015 and to decipher magmatic versus hydrothermal contributions to the eruptions. Pulses of deeply derived CO2‐rich gas (CO2/Stotal > 4.5) precede explosive activity, providing a clear precursor to eruptive periods that occurs up to 2 weeks before eruptions, which are acc…

Temporal evolution of the Fogo Volcano magma storage system (Cape Verde Archipelago): a fluid inclusions perspective

2023

The architecture of the magma storage system underneath Fogo Volcano (Cape Verde Archipelago) is characterised using novel fluid inclusion results from fifteen basanites, spanning the last 120 thousand years of volcanic activity, and encompassing a major flank collapse event at -73 ka. Fluid inclusions, hosted in olivine and clinopyroxene, are made of pure CO2, and based on their textural characteristics, are distinguished in early (Type I) and late (Type II) stage. Inclusions homogenize to a liquid phase in the 2.8 to 30.8 degrees C temperature range. Densities values, recalculated assuming an original 10% H2O content at the time of trapping, range from 543 to 952 kg center dot m(-3), and …

Assessment of the Geochemical Potential in a Complex Tectonic Environment of South-East Sicily: New Insights From Hydrochemical Data

2019

We analyzed a large dataset (143 water sampling sites, 22 variables) of chemical parameters in local groundwaters from the south-east sector of Sicily, namely the Hyblean plateau, in order to set an original evaluation of its geothermal potential using applied geochemistry. The area was affected by volcanism until about 1.4 Ma. Today, though no active volcanism occurs, it is site of surface gas manifestations of focused degassing to which a mantle source has been attributed. We identified and thence selected the most promising sites (water springs and wells) based both on their main geochemical characteristics and on their calculated equilibrium temperature (resulting in the range between 5…

Geodynamic Setting of the Tertiary Hocheifel Volcanism (Germany), Part I: 40Ar/39Ar geochronology

2007

The Eifel volcanism is part of the Cenozoic Central European Volcanic Province and is located close to the Rhine Graben which has been formed by rifting and subsidence since the Eocene. Whereas the Quaternary volcanism of the Eifel appears to be genetically related to mantle plume activity, the cause of the Tertiary volcanism of the Hocheifel volcanic field is less clear. Here, we present geochronological evidence for the geotectonic setting of the Tertiary Eifel volcanism based on 40Ar/39Ar dating of 27 samples from 25 volcanic occurrences. Included are samples from the northern Upper Rhine Graben in order to evaluate a possible relationship between Hocheifel volcanism and Rhine Graben tap…

The use of tree-rings and foliage as an archive of volcanogenic cation deposition.

2007

Tree cores (Pinus nigra ssp. laricio) and leaves (Castanea sativa) from the flanks of Mount Etna, Sicily were analysed by ICP-MS to investigate whether volcanogenic cations within plant material provide an archive of a volcano's temporal and spatial depositional influence. There is significant compositional variability both within and between trees, but no systematic dendrochemical correlation with periods of effusive, explosive or increased degassing activity. Dendrochemistry does not provide a record of persistent but fluctuating volcanic activity. Foliar levels of bioaccumulated cations correspond to modelled plume transport patterns, and map short-term volcanic fumigation. Around the fl…

Neville, Henry

2021

A descendant of a noble English family, Henry Neville (1620–1694) was an influential political figure and a prominent intellectual in the tumultuous phase from the execution of Charles I in 1649 to the Glorious Revolution of 1688, that is to say, the period when England went through the crucial stages of the civil war by ending royal absolutism, followed by the republican interlude and the Restoration, and the laying of the foundations of European constitutionalism.

Péptidos antihipertensivos derivados de proteínas lácteas: producción mediante levaduras no convencionales y mecanismos de acción

2015

En esta Tesis Doctoral se ha estudiado el potencial de levaduras no convencionales, pertenecientes a las especies Debaryomyces hansenii, Kluyveromyces lactis y Kluyveromyces marxianus, para generar hidrolizados y péptidos antihipertensivos provenientes de caseína (CN) o lactoferrina (LF). Además, se ha profundizado en el mecanismo de acción responsable del efecto antihipertensivo. Para ello, se han utilizado diferentes aproximaciones experimentales que incluyen ensayos in vitro para determinar los efectos inhibitorios sobre la actividad de la enzima conversora de angiotensina (ECA) y ensayos in vivo en ratas espóntaneamente hipertensas (SHRs) para estudiar los efectos sobre la presión arter…

Jaque al rey, juego de héroe: Vicente Blasco Ibáñez desde París, entre la heroificación y la República

2020

espanolVicente Blasco Ibanez, fundador de uno de los movimientos republicanos mas importantes de la Espana del primer tercio del siglo XX, fue elevado en vida a la categoria de heroe y simbolo del republicanismo. El gran novelista, periodista y politico, utilizo ese carisma para lanzar un feroz ataque contra la monarquia de Alfonso XIII y contra la Dictadura de Primo de Rivera a partir de 1923. Lo hizo con la ayuda de su secretario Carlos Espla y a traves de la prensa y los folletos sarcasticos. La influencia de estos papeles contribuyo, a su vez, a la glorificacion republicana de Blasco tras la proclamacion de la Segunda Republica Espanola EnglishVicente Blasco Ibanez, founder of one of th…