Results 81 to 90 of about 27,059 (237)

Cervantes y la preceptiva literaria

open access: yesAnales Cervantinos, 2014
La historiografía de la cultura literaria relaciona frecuentemente El Quijote y, por extensión, la obra de Cervantes con la Preceptiva, materia que aparece perseverantemente en los planes de estudio desde finales del siglo XVII hasta la primera mitad del
Miguel Ángel Garrido Gallardo
doaj   +1 more source

Long-term chemical characterization of tropical and marine aerosols at the Cape Verde Atmospheric Observatory (CVAO) from 2007 to 2011 [PDF]

open access: yesAtmospheric Chemistry and Physics, 2014
The first long-term aerosol sampling and chemical characterization results from measurements at the Cape Verde Atmospheric Observatory (CVAO) on the island of São Vicente are presented and are discussed with respect to air mass origin and seasonal trends.
K. W. Fomba   +5 more
doaj   +1 more source

On the inability of existing security models to cope with data mobility in dynamic organizations [PDF]

open access: yes, 2008
Modeling tools play an important role in identifying threats in traditional\ud IT systems, where the physical infrastructure and roles are assumed\ud to be static.
Dimkov, Trajce   +2 more
core   +5 more sources

Evidence for Virtual Source‐Receiver Refractions in Cross Correlations of Infrasonic Ambient Noise

open access: yesGeophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Seasonal variability in source activity and atmospheric temperature were retrieved from 11 years of infrasonic ambient noise. Variable lag times between an array and single microbarometer were obtained from envelopes of cross‐correlation functions. Beamforming and one‐bit normalization significantly enhanced the stationary phase.
L. G. Evers, J. D. Assink, J. T. Fricke
wiley   +1 more source

Enantiodivergent asymmetric catalysis with the tropos BIPHEP ligand and a proline derivative as chiral selector

open access: yesChemical Science, 2015
Enantiomer on demand: tropos ligand BIPHEP and chiral selector (S)-proline methyl ester allow enantiodivergent Rh-catalysed hydrogenation and asymmetric styrene hydroboration.
Philipp Oczipka   +3 more
semanticscholar   +1 more source

A Re‐Examination of the Reversal in Vertical Velocity Profiles at 12 km Altitude Measured by the Middle and Upper Atmosphere Radar Over a 38‐Year Period (1987–2024)

open access: yesJournal of Geophysical Research: Atmospheres, Volume 130, Issue 23, 16 December 2025.
Abstract Vertical air motion is a key factor in many meteorological phenomena, yet measuring it remains challenging. VHF Stratosphere‐Troposphere radars, however, provide methods to measure vertical air velocities (W) $W)$ in the tropo‐stratosphere. From Middle and Upper (MU) atmosphere radar data spanning 38 years (1987–2024), we found that the well ...
Hubert Luce   +2 more
wiley   +1 more source

Using a situational method engineering approach to identify reusable method fragments from the secure TROPOS methodology [PDF]

open access: yes, 2010
Situational method engineering (SME) has as a focus a repository of method fragments, gleaned from extant methodologies and best practice. Using one such example, the OPF (OPEN Process Framework) repository, we identify deficiencies in the current SME ...
Henderson-Sellers, B   +2 more
core   +3 more sources

Antarctica's Unique Atmosphere: Really Low INP Concentrations

open access: yesGeophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract We present data on ice nucleating particles (INPs) from three Antarctic locations, a region for which INP measurements are still rare: the German Neumayer research station, contributing 2 years of data; the Belgian Princess Elisabeth station (PES) with samples from two austral summer seasons; and the region of the Antarctic Peninsula, adding ...
Heike Wex   +9 more
wiley   +1 more source

The sensitivity of the colour of dust in MSG-SEVIRI Desert Dust infrared composite imagery to surface and atmospheric conditions [PDF]

open access: yesAtmospheric Chemistry and Physics, 2019
Infrared “Desert Dust” composite imagery taken by the Spinning Enhanced Visible and InfraRed Imager (SEVIRI), onboard the Meteosat Second Generation (MSG) series of satellites above the equatorial East Atlantic, has been widely used for more than a ...
J. R. Banks   +5 more
doaj   +1 more source

La moda de los macro logos:

open access: yesGrafica: Documents de Disseny Gràfic
Entre los recursos de comunicación visual de las marcas de moda encontramos unos tropos que se han convertido en elementos estratégicos esenciales como herramientas de branding.
Andrea Bertola   +3 more
doaj   +1 more source

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