Search results for "SAS"

Comunicación electoral y formación de la opinión pública: las Elecciones Generales de 2000 en la prensa española

2002

Análisis del proceso de formación de la opinión pública a través de los medios de comunicación de masas. La mediación periodística en un proceso electoral: los políticos en la prensa y la política de los medios de comunicación. Representación de la opinión pública a través de los sondeos y la opinión publicada por la prensa. Influencia del discurso ideológico de los medios de comunicación de masas sobre los resultados electorales de Marzo de 2000. Condicionamientos en el proceso de formación de la opinión pública. Analysis of the formation of public opinion through mass media. Journalistic mediation in an election process: politicians in the press and politics of the media. Representation o…

Saskarnes dizaina lietojamības un estētisko kritēriju analīze

2020

Bakalaura darbā “Saskarnes dizaina lietojamības un estētisko kritēriju analīze” izpētīts, kā cilvēki, ņemot vērā dažādus kritērijus - dzimumu, vecumu, izglītības līmeni un hobijus, mēra saskarnes un saskarņu lietojamību. Mērķis noteikt, vai simetriskas saskarnes vērtētas pozitīvāk par asimetriskām saskarnēm. Noskaidrojot simetrijas un asimetrijas ietekmi mūsdienu dizainā. Darbā ir apskatītas metrikas un metriku izcelsme, pēc kurām iespējams veikt saskarņu novērtēšanu. Darba ietvaros aprakstīta dizaina vēsture un lietojamība, un nozīme mūsdienās. Izzināta estētikas un lietojamības nepieciešamība mūsdienu saskarnēs, izprastas mūsdienu saskarņu pozitīvās īpašības un trūkumi. Bakalaura darba ie…

Estudio de las bases de la resistencia a las proteínas insecticidas de bacillus thuringiensis en ostrinia nubilalis

2013

Ostrinia nubilalis (Hübner) es una de las plagas más devastadoras de los cultivos de maíz de Europa y Norte América, y a nivel económico la obtención de un control eficaz de esta plaga es un logro fundamental. En 1996, se permitió la comercialización de las plantas transgénicas que llevan insertado en el genoma un gen procedente de Bacillus thuringiensis (Berliner) (Bt) y que codifica para una proteína insecticida de las que esta bacteria produce en forma de cristales paraesporales (proteínas Cry). A partir de esta fecha, la adopción de los cultivos de maíz Bt que expresan en concreto la toxina Cry1Ab ha ido aumentando progresivamente en todo el mundo, con el resultado de que las pérdidas e…

Comparative analysis of corporate tax burden in the euro area during 2000-2013

2016

Traditionally, some countries have been using the Corporate Income Tax as a way of, starting from relatively high nominal tax rates, encourage certain economic activities through incentives or bonuses that allow considerably reduce actual business taxation. In contrast, other member states have chosen to directly lower the tax rate, regardless of other incentives, thus bringing the nominal taxation to effective.This research aims to analyze the discrepancies in the taxation of corporate income tax between different Eurozone countries for the period 2000-2013, noting the differences between the statutory (STR) and effective tax rates (ETR) of listed companies. In this way, this work locates …

2017

Abstract. Remote sensing of the gaseous composition of non-eruptive, passively degassing volcanic plumes can be a tool to gain insight into volcano interior processes. Here, we report on a field study in September 2015 that demonstrates the feasibility of remotely measuring the volcanic enhancements of carbon dioxide (CO2), hydrogen fluoride (HF), hydrogen chloride (HCl), sulfur dioxide (SO2), and bromine monoxide (BrO) in the downwind plume of Mt. Etna using portable and rugged spectroscopic instrumentation. To this end, we operated the Fourier transform spectrometer EM27/SUN for the shortwave-infrared (SWIR) spectral range together with a co-mounted UV spectrometer on a mobile platform in…

A multi-purpose, multi-rotor drone system for long-range and high-altitude volcanic gas plume measurements

2021

A multi-rotor drone has been adapted for studies of volcanic gas plumes. This adaptation includes improved capacity for high-altitude and long-range, real-time SO2 concentration monitoring, long-range manual control, remotely activated bag sampling and plume speed measurement capability. The drone is capable of acting as a stable platform for various instrument configurations, including multi-component gas analysis system (MultiGAS) instruments for in situ measurements of SO2, H2S, and CO2 concentrations in the gas plume and portable differential optical absorption spectrometer (MobileDOAS) instruments for spectroscopic measurement of total SO2 emission rate, remotely controlled gas samplin…

Unrest at the Nevados de Chillán volcanic complex: a failed or yet to unfold magmatic eruption?

2018

Resuming erupting activity at volcanoes that have been long quiescent poses a significant challenge to hazard assessment, as it require assessment of whether the change in activity is an isolated event or the beginning of a new eruptive sequence. Such inception is often poorly characterised as quiescent volcanoes tend to be poorly equipped and not extensively monitored, especially with respect to gas geochemistry. Here, we report gas composition and flux measurements from a newly opened vent at the very onset of eruptive activity at the Nevados de Chillán volcanic complex (Chile) in January-February 2016. The molar proportions of H2O, CO2, SO2, H2S and H2 gases are found to be 98.4, 0.97, 0…

Degassing of halogens from basaltic volcanism: Insights from volcanic gas observations

2009

Abstract The currently available data set of S–Cl–F abundances in volcanic gas plumes and high-temperature fumarolic gas samples from basaltic volcanism is reviewed here in the attempt to derive constraints on the modes of halogen degassing from mafic silicate melts. Apart from large volcano-to-volcano variations, reflecting remarkable differences in volatile abundances in the source magmas, each of the explored volcanoes displays large changes of SO2/HCl and SO2/HF ratios with the style of volcanic activity, with HCl/HF staying fairly constant. Halogen abundances are low and SO2/HCl and SO2/HF are high when fresh (volatile-rich) magmas sustain degassing, as during explosive eruptions, at t…

Total volatile flux from Mount Etna

2008

[1] The Total Volatile (TV) flux from Mount Etna volcano has been characterised for the first time, by summing the simultaneously-evaluated fluxes of the three main volcanogenic volatiles: H2O, CO2 and SO2. SO2 flux was determined by routine DOAS traverse measurements, while H2O and CO2 were evaluated by scaling MultiGAS-sensed H2O/SO2 and CO2/SO2 plume ratios to the UV-sensed SO2 flux. The time-averaged TV flux from Etna is evaluated at ∼21,000 t·day−1, with a large fraction accounted for by H2O (∼13,000 t·day−1). H2O dominates (≥70%) the volatile budget during syn-eruptive degassing, while CO2 and H2O contribute equally to the TV flux during passive degassing. The CO2 flux was observed to…

The fumarolic CO2 output from Pico do Fogo volcano (Cape Verde)

2020

The Pico do Fogo volcano, in the Cape Verde Archipelago off the western coasts of Africa, has been the most active volcano in the Macaronesia region in the Central Atlantic, with at least 27 eruptions during the last 500 years. Between eruptions fumarolic activity has been persisting in its summit crater, but limited information exists for the chemistry and output of these gas emissions. Here, we use the results acquired during a field survey in February 2019 to quantify the quiescent summit fumaroles' volatile output for the first time. By combining measurements of the fumarole compositions (using both a portable Multi-GAS and direct sampling of the hottest fumarole) and of the SO2 flux (u…