Search results for "GAL"
showing 10 items of 9260 documents
Diseño de un sistema de indicadores, amparados en los 17 Objetivos del Desarrollo Sostenible (ONU), para la creación de un indicador sintético en des…
2020
Las transformaciones sociales, políticas y económicas de las tres últimas décadas, enmarcan el crecimiento y el desarrollo de la actividad turística. A partir de la década de los 50, los destinos turísticos de sol y playa empezaron a presentar importante destaque en el ámbito turístico internacional, con énfasis en la costa mediterránea española y en la costa algarvéa portuguesa, transformándose en un factor decisivo en el desarrollo de las economías (Meethan, 2001) en la península Ibérica. El crecimiento y el desarrollo de la actividad turística trajo importantes transformaciones y oportunidades, tanto dentro como fuera del sector (Jafari, 1994), transformando el turismo en una nueva e imp…
Dabisko zālāju indikatorsugu izplatība autoceļu un dzelzceļu nomalēs: Elejas piemērs
2015
Bakalaura darba nosaukums ir “Dabisko zālāju indikatorsugu izplatība autoceļu un dzelzceļu nomalēs: Elejas piemērs.” Darbā izvirzītie mērķi ir noskaidrot dabisko zālāju indikatorsugu izplatību ceļa un dzelzceļa nomalēs, salīdzināt abus transporta koridorus un noteikt, kuri faktori ir visnozīmīgākie indikatorsugu izplatībai. Darbā noteikto mērķu izpildei tika veikta dzelzceļa un ceļa nomaļu salīdzināšana, analizējot faktorus un sugu sastāvu. Zemgales reģionā lielākā daļa dabisko zālāju platības ir izzudušas vai degradētas intensīvas lauksaimniecības rezultātā. Dabiskajiem zālājiem raksturīgās sugas ir iespējams novērot ceļa un dzelzceļa transporta koridoru nomalēs. Nomales kalpo kā alternatī…
Broad-band Spectral Evolution of Scorpius X-1 along its Color-Color Diagram
2007
We analyze a large collection of RXTE archive data from April 1997 to August 2003 of the bright X-ray source Scorpius X-1 in order to study the broadband spectral evolution of the source for different values of the inferred mass accretion rate by studying energy spectra from selected regions in the Z-track of its Color-Color Diagram. A two-component model, consisting of a soft thermal component interpreted as thermal emission from an accretion disk and a thermal Comptonization component, is unable to fit the whole 3--200 keV energy spectrum at low accretion rates. Strong residuals in the highest energy band of the spectrum require the addition of a third component that can be fitted with a …
23 GHz VLBI observations of SN 2008ax (Research Note)
2009
We report on phase-referenced 23 GHz Very-Long-Baseline-Interferometry (VLBI) observations of the type IIb supernova SN 2008ax, made with the Very Long Baseline Array (VLBA) on 2 April 2008 (33 days after explosion). These observations resulted in a marginal detection of the supernova. The total flux density recovered from our VLBI image is 0.8 ± 0.3 mJy (one standard deviation). As it appears, the structure may be interpreted as either a core-jet or a double source. However, the supernova structure could be somewhat confused with a possible close by noise peak. In such a case, the recovered flux density would decrease to 0.48 ± 0.12 mJy, compatible with the flux densities measured with the…
An X-ray characterization of the central region of the supernova remnant G332.5-5.6
2015
Aims. We present an X-ray analysis of the central region of supernova remnant (SNR) G332.5-5.6 through an exhaustive analysis of XMM-Netwon observations with complementary infrared observations. We characterize and discuss the origin of the observed X-ray morphology, which presents a peculiar plane edge over the west side of the central region. Methods. The morphology and spectral properties of the X-ray SNR were studied using a single full frame XMM-Netwon observation in the 0.3 to 10.0 keV energy band. Archival infrared WISE observations at 8, 12 and 24 μm were also used to investigate the properties of the source and its surroundings at different wavelengths. Results. The results show th…
Sub-milliarcsecond imaging of a bright flare and ejection event in the extragalactic jet 3C 111
2020
Context. Flares in radio-loud active galactic nuclei are thought to be associated with the injection of fresh plasma into the compact jet base. Such flares are usually strongest and appear earlier at shorter radio wavelengths. Hence, very long baseline interferometry (VLBI) at millimeter(mm)-wavelengths is the best-suited technique for studying the earliest structural changes of compact jets associated with emission flares. Aims. We study the morphological changes of the parsec-scale jet in the nearby (z = 0.049) γ-ray bright radio galaxy 3C 111 following a flare that developed into a major radio outburst in 2007. Methods. We analyse three successive observations of 3C 111 at 86 GHz with th…
On the location of the supermassive black hole in CTA102
2015
Relativistic jets in active galactic nuclei represent one of the most powerful phenomena in the Universe. They form in the surroundings of the supermassive black holes as a by-product of accretion onto the central black hole in active galaxies. The flow in the jets propagates at velocities close to the speed of light. The distance between the first part of the jet that is visible in radio images (core) and the black hole is still a matter of debate. Only very-long-baseline interferometry observations resolve the innermost compact regions of the radio jet. Those can access the jet base, and combining data at different wavelenghts, address the physical parameters of the outflow from its emiss…
Jaulnes (Seine-et-Marne), "Les Graviers" : rapport de diagnostic
2010
Ce diagnostic a permis la mise au jour de structures du Néolithique récent/final dont une sépulture, ainsi que des monuments funéraires protohistoriques et des structures gallo-romaines.
A challenging case of chorioretinitis and skin lesions in a lung transplant recipient
2018
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L’INFORMAZIONE E LA FORMAZIONE DEL SANITARIO NELLE INFEZIONI NOSOCOMIALI: LA NOSTRA ESPERIENZA
2013
Gli Autori riportano i risultati ottenuti dalla somministrazione di un questionario, nel contesto siciliano dei Policlinici Universitari di Palermo e Messina, a sanitari operanti nel campo della terapia intensiva, selezionando e analizzando i quesiti maggiormente implicati nelle tematiche inerenti il clinical risk management delle IN, individuandone specifiche carenze a carico dei singoli professionisti e della struttura ospedaliera. È stato evidenziato che, sebbene siano già presenti specifici protocolli, nonché linee guida in materia, essi non trovano ancora un adeguato spazio nella realtà quotidiana di gestione del malato a causa di una generale inadeguatezza dell’informazione e della fo…