Search results for "Islands"
showing 10 items of 373 documents
Men of Aran: Strangers on the Fringe of Europe
2015
International audience
Karst, acantilados y calas en el Migjorn de Menorca
2017
[spa]La costa sur de la isla de Menorca se caracteriza por la presencia, de forma más o menos continua, de acantilados verticales cortados en los depósitos carbonatados que constituyen una plataforma atribuida al Mioceno superior. Los acantilados se encuentran interrumpidos en la zona litoral por una marcada incisión producida por los barrancos que drenan toda la plataforma miocena del sur de la isla y que, en su desembocadura al mar, dan lugar a las denominadas calas. La forma de éstas viene controlada no tan sólo por la fracturación, que a su vez controla la red de drenaje, sino que también por la contribución de los procesos kársticos que están directamente relacionados con la …
Costuming in Seán Keating’s self-portraits: theatrical guise or political disguise?
2018
L’œuvre du peintre irlandais Seán Keating (1889–1977) a accompagné l’affirmation d’une irlandité mêlant tradition et modernité. Dans cette perspective, les nombreux autoportraits de l’artiste peuvent être considérés comme un moyen d’incarner un idéal politique. Le recours au costume dans ses autoportraits mérite attention. En effet, Keating reprend une tradition picturale bien établie en se représentant de manière ludique en costume mais utilise le dispositif de manière plus politique. En revêtant le costume traditionnel des habitants des îles d’Aran ou bien en se portraiturant en habit traditionnel dans des compositions aux accents nationalistes, Keating incarne des idées politiques et aff…
An Economic Approach to Size of a Renewable Energy Mix in Small Islands
2022
The importance of renewable energy exploitation reduces the energy dependence on fossil fuels. Despite technological progress, in several remote areas and small islands the energy production is nowadays dominated by the utilization of fossil fuels. With new, increasingly stringent laws on polluting emissions and the need to lower production costs, it is necessary to exploit as many renewable sources as possible. In order to implement these considerations, it was decided to study renewable energy production. The study was carried out by estimating the energy production on a monthly and annual basis considering a mix of three plants, namely marine, solar, and wind. Simulations on wave product…
The effect of high-In content capping layers on low-density bimodal-sized InAs quantum dots
2013
[EN] The structural and morphological features of bimodal-sized InAs/(In) GaAs quantum dots with density in the low 10(9) cm(-2) range were analyzed with transmission electron microscopy and atomic force microscopy and were related to their optical properties, investigated with photoluminescence and time-resolved photoluminescence. We show that only the family of small quantum dots (QDs) is able to emit narrow photoluminescence peaks characteristic of single-QD spectra; while the behavior of large QDs is attributed to large strain fields that may induce defects affecting their optical properties, decreasing the optical intensity and broadening the homogeneous linewidth. Then, by using a rat…
Phytochemical analysis ofAchillea ligusticaAll. from Lipari Island (Aeolian Islands)
2016
A complete chemical investigation of Achillea ligustica All. growing at Lipari (Aeolian Island, Sicily) has been carried out. Seventeen metabolites have been isolated and characterised from dichloromethane and methanol extracts of flowers and aerial parts, and GC/MS analyses of petroleum ether extracts was carried out, revealing a composition in sesquiterpenoids similar to those reported for populations from Greece, Sicily and Algeria, showing the presence of (3RS,6RS)-2,6-dimethyl-1,7-octadiene-3,6-diol (1), 2,6-dimethyl-octa-3(E),7-diene-2,6-diol (2), iso-seco-tanapartholide (3) from DCM fraction. In addition from the methanolic extract of the aerial parts, peculiar flavonoid glucuronides…
Italy's Island Systems: Competitiveness in the Mediterranean Context
2021
From ancient times, the Mediterranean basin has connected peoples from different countries, facilitating both commercial and cultural exchanges. Within the Mediterranean basin, both large and small islands have always been transit and temporary stopping places, thereby promoting trade and acting as sorting centers for goods and knowledge. Today, these territories, which differ in size, population and economic and cultural activities, are the core of new exchanges and activities, among which tourism stands out. The Mediterranean basin has more than 100 islands belonging to six states that are members of the European Union (EU). However, despite the diversity and uniqueness of each island, th…
Ecological specialization to fluctuating resources prevents long-distance migratory raptors from becoming sedentary on islands
2013
[Background]: The adaptive transition between behavioral strategies, such as the shift from migratoriness to sedentariness, remains an outstanding question in evolutionary ecology. Density-dependent variation in the age of first breeding has been proposed as a feasible mechanism through which long-lived migratory birds with deferred sexual maturity should become sedentary to persist on islands. Although this pattern seems to hold for most raptors and herons, a few exceptions have been identified. One of these exceptions is the Eleonora's falcon, a long-distance migratory bird, which shows one of the most peculiar adaptations in the timing of reproduction and food requirements among raptors.…
Females tend to prefer genetically similar mates in an island population of house sparrows.
2014
11 pages; International audience; BACKGROUND: It is often proposed that females should select genetically dissimilar mates to maximize offspring genetic diversity and avoid inbreeding. Several recent studies have provided mixed evidence, however, and in some instances females seem to prefer genetically similar males. A preference for genetically similar mates can be adaptive if outbreeding depression is more harmful than inbreeding depression or if females gain inclusive fitness benefits by mating with close kin. Here, we investigated genetic compatibility and mating patterns in an insular population of house sparrow (Passer domesticus), over a three-year period, using 12 microsatellite mar…
Longitudinal genome-wide DNA methylation analysis uncovers persistent early-life DNA methylation changes
2019
[Background] Early life is a period of drastic epigenetic remodeling in which the epigenome is especially sensitive to extrinsic and intrinsic influence. However, the epigenome-wide dynamics of the DNA methylation changes that occur during this period have not been sufficiently characterized in longitudinal studies.