117,790 research outputs found
DU SOLEIL A MINUIT AVEC CASTEL ET CASTI / CASTEL et CASTI avec orchestre Jack LEDRU
No full textComprend : LES SANTONS / L. CASTEL et E. CASTI - MONSIEUR LA NEIGE / Steve NELSON - CASTEL - CASTI et Jack ROLLINS - DU SOLEIL A MINUIT - conte de Noël / Paroles de L. CASTEL - fond musical de E. CASTIBnF-Partenariats, Collection sonore - BelieveContient une table des matière
Ricerche geobotaniche e loro applicazioni in habitat minerari della Sardegna sud-occidentale
No full textIntegration of vegetational and multitemporal analysis: a case study in the abandoned mine district of Montevecchio (South-western Sardinia)
No full textIn this paper the authors analyse the land cover transformation in the mine district of Montevecchio,
through the integration of vegetational and multitemporal landscape analysis. For this
purpose, three important dates (1955, 1977, 2000) of the district history have been considered and
two different periods are analysed (1955-1977 and 1977-2000). Multitemporal analysis was carried
out through the study of aerial photographs which resulted in the production of three 1:10.000
land cover maps. Vegetational data were obtained through the phytosociological study of the area.
The results show the evolution of the natural vegetation as general trend in the territory. Particular
analysis was carried out on the mining areas (mining dumps, surface mines and tailing dams) to
understand how much and how have been re-colonized by the native vegetation. For the mining
dumps the main transformations are towards the mediterranean maquis, the garrigue and the corkoak
woods. The surface mines was stable in the first period for 73.6% and the main changes are
due to the diffusion of natural vegetation (e.g. to mediterranean maquis 14.7%). With regard to the
tailing dams we observed an increase of stability (from 81.6% to 96.1%) together with a global
increase of surface from 1955 to 2000. Therefore, the integration of the multitemporal and the
vegetational analysis made possible to register a significant evolution of the vegetation cover on
incoherent and polluted materials in relatively short times
Analisi della vegetazione del distretto minerario di Montevecchio (Sardegna sud-occidentale)
No full textThe results of a phytosociological research on the mining habitats of
Montevecchio (SW-Sardinia) are presented. The statistic analysis of the relevés let to recognize 14 plant communities. The hygrophilous communities
have been ascribed to the class Phragmito-Magnocaricetea, the hemicryptophytic mesohygrophilous ones to Juncetea maritimi, the therophytic to
Tuberarietea guttatae and the hemicryptophytic mesoxerophilous to Lygeo-Stipetea.
The most interesting vegetation types turned out to be the chamaephytic and nanophanerophytic ones, both kinds are belonging to sardo-corsican
endemic alliances: Ptilostemono casabonae-Euphorbion cupanii and Teucrion mari, respectively. The first alliance comprises pebble vegetation with
distinctive ecological preferences, as they are able to colonize substrata polluted by heavy metal, with low pH values. Within this alliance, 4 new
associations have been recognized: Scrophularietum bicoloris, Dactylo hispanicae-Helichrysetum tyrrhenici, Mercurialido corsicae-Euphorbietum
cupanii and Dauco maritimi-Dittrichietum viscosae, the latter with two subassociations (typicum and rumicetosum glaucescentis). As to the Teucrion
mari, 1 new association and 1 subassociation have been described (Helichryso tyrrhenici-Genistetum sulcitanae and Stachydi glutinosae-Genistetum
corsicae euphorbietosum cupanii), found on aged mining dumps, where the long abandonment made possible the beginning of the pedogenetic
processes.
The present study let to reconstruct the vegetation dynamics, that in the mining areas are clearly differing from the surrounding territory. It was
possible to identify two special series, strictly related to these habitats and verging to the establishment of plant communities pertaining to the
climatophilous series: the first is developing on coarse, hard-sloping debris, with very low water retention; the second is developing on fine-grained
and coherent materials, found on flattened or gently-sloping sites, with high edaphic humidity. In wetlands, it was also possible to identify an
edaphohygrophilous series and a geoseries of endoreic water bodies, not exclusive of the mining habitats
L’empire vilipendé ou les ingratitudes de l’Abbé Casti, poète impérial indigne
No full textGiambattista Casti, que les histoires de la littérature italienne se sont longtemps obstinées à appeler « l’abbé Casti », est une de ces figures délicieusement sulfureuses — d’un soufre bien évaporé désormais — qui ont eu certainement le tort de ne pas brosser la sensibilité critique dans le sens du poil historique. On a du mal à imaginer aujourd’hui le fiel que ce malheureux a pu se voir déverser par les Aristarques de l’Italie patriotique et risorgimentale, nationaliste puis fasciste qui l’..
La flora del distretto minerario di Montevecchio (Sardegna sud-occidentale)
No full textA contribution to the knowledge of the flora of the mining
district of Montevecchio is reported, focussing on the plants colonizing highly polluted substrata, produced or altered by
the mining activity.
In the present survey, 373 taxonomic units have been recorded, ranking as follows: 332 species, 36 subspecies, 3 varieties,
2 hybrids. On old racking basins and dumps, 192 taxa have been recorded: 170 species, 20 subspecies, 1 variety, 1 hybrid.
Further 181 taxa (162 species, 16 subspecies, 2 varieties, and 1 hybrid) are missing on racking basins and dumps, but grow,
however, in the nearby areas.
The surveyed taxa belong to 73 families and 252 genera, but only 53 families and 146 genera are represented on racking
basins and mining dumps. The top three families are: Asteraceae (42 taxa, 11,3% of the total), Fabaceae (36 taxa, 9.7%)
and Poaceae (28 taxa, 7.5%). The top three genera are: Trifolium and Ophrys (8 taxa), followed by Euphorbia (6 taxa).
The biological spectrum highlights the remarkable Mediterranean connotation of the investigated district, being the therophytes
42,1% of the whole flora, followed by the hemicryptophytes (22,5%).
The chorologic spectrum is dominated by the Mediterranean chorotype (56.6%), including circum-Mediterranean
(39.4%), W-Mediterranean (8.0%) and endemic taxa (7.2%). Further 22.3% of the surveyed taxa have a wider distribution
range, but centered, however, in the Mediterranean region.
As concerns the endemics, 26 taxa have been found, of which 21 species and 5 subspecies. Asteraceae and Scrophulariaceae
resulted the richest in endemic taxa (3 units each). Most of the recorded endemics have a Tyrrhenian-insular distribution;
with reference to the biogeographic units of the Mediterranean region, they belong to the Italo-Tyrrhenian superprovince
Blockade of neurotensin receptors affects differently hypo-locomotion and catalepsy induced by haloperidol in mice
No full textAntipsychotic drug treatment increases neurotensin (NT) neurotransmission, and the exogenous administration of NT produces antipsychotic-like effects in rodents. In order to investigate whether "endogenous" NT may act as a natural occurring antipsychotic or may mediate antipsychotic drug activity, the effects of the selective NT receptor antagonists SR 48692 and SR 142948A were analyzed in different behavioural tests of locomotor activity using vehicle, amphetamine, or haloperidol in mice. SR 48692 (0.1-1 mg/kg, i.p.) and SR 142948A (0.03-0.1 mg/kg, i.p.) failed to affect mouse spontaneous locomotor activity and amphetamine-induced (2.5 mg/kg, i.p.) hyper-locomotion. However, SR 48692 (0.1 and 0.3 mg/kg, i.p.) and SR 142948A (0.03 and 0.05 mg/kg, i.p.) significantly alleviated the reduction of locomotor activity elicited by haloperidol (0.01 and 0.04 mg/kg, s.c.) in vehicle- or amphetamine-treated mice. Finally, SR 48692 (0.3 mg/kg, i.p.) and SR 142948A (0.05 and 0.1 mg/kg, i.p.) increased mouse catalepsy produced by haloperidol (0.3 mg/kg, s.c.). The present results indicate that while endogenous NT is not involved in the modulation of either mouse spontaneous locomotor activity or amphetamine-induced hyper-locomotion, it might act by enhancing the therapeutic effects of haloperidol and by attenuating the extrapyramidal side effects elicited by this antipsychotic. © 2004 Elsevier Ltd. All rights reserved
Life-cycle structural reliability of RC bridge piers under corrosion in a changing climate
No full textAging and deterioration processes of structures and infrastructure systems can be severely affected by the long-term evolution of environmental conditions expected in a changing climate. This paper aims at investigating the interaction between climate change and environmental aggressiveness on the probabilistic life-cycle performance of concrete structures under corrosion. A simulation-based framework is proposed for life-cycle structural reliability analysis under climate change scenarios. The framework is applied to a bridge pier with hollow core cross-section exposed to chloride-induced corrosion. The results allow to quantify the impact of climate change on long-term probabilistic structural response and highlight the need for proper modeling of the environmental parameters and climate evolution over the entire lifespan of aging structures for optimal life-cycle maintenance and management of structural and infrastructural facilities
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