Search results for " Planetary"
showing 10 items of 5408 documents
Asteroseismology and mass loss in Be stars. Study with CoRoT
2010
The interiors of the stars are among the most difficult parts of the Universe to observe. Essentially, asteroseismology tries to make use of the oscillations to prove the stellar interiors, which are not directly observable. The basic principles of asteroseismology are, to a certain extent, similar to those developed and employed by Earth seismologists. Asteroseismology relies on advanced mathematical descriptions of oscillations in a three-dimensional body and numerical modeling. It is therefore a prominent example of interdisciplinary science. The general aim of this work is the study of Be stars with the CoRoT space mission. Classical Be stars are B-type stars that exhibit line emission …
Long-term summer temperature variations in the Pyrenees from detrended stable carbon isotopes
2015
Abstract Substantial effort has recently been put into the development of climate reconstructions from tree-ring stable carbon isotopes, though the interpretation of long-term trends retained in such timeseries remains challenging. Here we use detrended δ13C measurements in Pinus uncinata tree-rings, from the Spanish Pyrenees, to reconstruct decadal variations in summer temperature back to the 13th century. The June-August temperature signal of this reconstruction is attributed using decadally as well as annually resolved, 20th century δ13C data. Results indicate that late 20th century warming has not been unique within the context of the past 750 years. Our reconstruction contains greater …
Dynamic pressure variations in the lower crust caused by localized fluid-induced weakening
2022
When continents collide, the Earth’s crust experiences structural and metamorphic transformations that control the geodynamic evolution of the orogen. Metamorphism of dry, lower crust requires fluid supply and produce mechanically weaker rocks. Metamorphism is often localized in shear-zones, which provide the available fluid pathways. Several field-based studies show that shear zone development is preceded by brittle faults, frequently portraying evidence for seismic slip rates and introduction of externally derived fluids. However, despite the extensive documentation of lower crustal metamorphism and associated deformation features, a unifying model coupling deformation to fluid …
Combining inorganic and organic carbon stable isotope signatures in the Schwalbenberg Loess-Palaeosol-Sequence near Remagen (Middle Rhine valley, Ger…
2020
Western Central European Loess-Palaeosol-Sequences (LPS) provide valuable terrestrial records of palaeoenvironmental conditions, which formed in response to variability in the North Atlantic climate systems. Over the last full glacial cycle (∼130 ka), climate oscillations within these systems are best documented in deep sea- and ice cores; the responses of terrestrial systems are not yet fully understood. A better understanding of metabolism governing input and output variables of organic- and inorganic C pools is, however, crucial for investigating landscape-atmospheric feedback processes and in particularly, for understanding the formation of calcareous LPS as environmental archives. Here…
The evolution of Military Health in Valencia during the Spanish Civil War (1936-1939)
2011
Antecedentes y objetivos: Tras la insurrección militar del 18 de julio de 1936 el Ejército de la República quedó parcialmente desarticulado, resultando afectada la Sanidad Militar. En el caso de Valencia, ésta fue asumida rápidamente por el Comité Sanitario Popular, un organismo revolucionario que lideró la respuesta sanitaria de Valencia a la Guerra Civil. Posteriormente, el Gobierno Republicano procedió a recuperar el poder a través de medidas de carácter centralizador, como fue la militarización de algunos hospitales. Fue entonces cuando volvió a articularse una auténtica Sanidad Militar. El objetivo de este trabajo es estudiar la evolución de la Sanidad Militar en Valencia, una de las z…
Health coverage for a retreating army: a Medical Captain’s action during the Maestrazgo campaign (April-July 1938).
2012
espanolAntecedentes y objetivos: Tras la entrada definitiva de las tropas del general Franco en la ciudad de Teruel en febrero de 1938 se inicio la retirada progresiva del Ejercito de Maniobra de la republica. El rapido avance de las fuerzas nacionales hacia el Mediterraneo marco las caracteristicas de la cobertura sanitaria militar. El objetivo de este trabajo es realizar una aproximacion a la Sanidad del Ejercito republicano durante su retirada por el Maestrazgo castellonense, que tuvo lugar entre abril y julio de 1938 en el contexto de la Guerra Civil Espanola (1936-1939). Material y metodos: Hemos utilizado una fuente de gran valor historico, como es el testimonio oral de un Capitan Med…
Existence de points fixes enlacés à une orbite périodique d'un homéomorphisme du plan
1992
Let f be an orientation-preserving homeomorphism of the plane such that f-Id is contracting. Under these hypotheses, we establish the existence, for every periodic orbit, of a fixed point which has nonzero linking number with this periodic orbit.
Sublimation of icy aggregates in the coma of comet 67P/Churyumov–Gerasimenko detected with the OSIRIS cameras on board Rosetta
2016
Beginning in 2014 March, the OSIRIS (Optical, Spectroscopic, and Infrared Remote Imaging System) cameras began capturing images of the nucleus and coma (gas and dust) of comet 67P/Churyumov¿Gerasimenko using both the wide angle camera (WAC) and the narrow angle camera (NAC). The many observations taken since July of 2014 have been used to study the morphology, location, and temporal variation of the comet's dust jets. We analysed the dust monitoring observations shortly after the southern vernal equinox on 2015 May 30 and 31 with the WAC at the heliocentric distance Rh = 1.53 AU, where it is possible to observe that the jet rotates with the nucleus. We found that the decline of brightness a…
"Table 12" of "High-$E_{\rm T}$ isolated-photon plus jets production in $pp$ collisions at $\sqrt s=$ 8 TeV with the ATLAS detector"
2018
Measured cross sections for isolated-photon plus 1jet production as a function of $|\cos\theta^{\star}|$ for the range $1.05 < m^{\gamma-\rm jet1} < 1.25$ TeV.
"Table 3" of "Measurements of the charge asymmetry in top-quark pair production in the dilepton final state at $\sqrt{s}=8$ TeV with the ATLAS detect…
2017
The leptonic inclusive asymmetry in the fiducial volume.