Search results for "Heron"
showing 10 items of 13 documents
La tomba di Terone ad Agrigento nei disegni degli allievi dell’École des Beaux-Arts
2016
I futuri architetti dell’École des Beaux-Arts di Parigi venivano indirizzati allo studio dell’architettura classica, che si perfezionava poi in Italia a contatto con monumenti e siti archeologici, grazie al Grand Prix, che permetteva loro di soggiornare presso l’Accademia di Francia a Roma. Molti di essi, sulla scia di celebri viaggiatori quali Dufourny, Hittorff e Schinkel, giunsero in Sicilia nella prima metà dell’Ottocento alla scoperta delle antichità e dei multiformi aspetti del paesaggio. Guillaume-Abel Blouet, Pierre-Joseph Garrez, Charles-Auguste Questel, Jean-Jacques Clerget, Louis-Clémentin Bruyerre - per citarne alcuni - si soffermarono a lungo sulle rovine classiche, rilevando e…
Breeding success of a colony of Boat-billed Herons Cochlearius cochlearius (Ciconiiformes: Ardeidae) in pasturelands of Costa Rica
2014
The breeding success of a double-brooding colony of Boat-billed Herons Cochlearius cochlearius was studied in pasturelands of Costa Rica. Mean clutch size in the first clutches (2.9 eggs/nest) was higher than in second and repeat clutches (2.3 eggs/nest). Breeding success was similar in the first attempt and second attempts(20.7 % and 21.7 %, respectively). In both attempts earlier nests enjoyed a higher breeding success. Starvation of the youngest chicks within the nest and destruction of nests by bad weather conditions were the main factors related to nestling death. No effects of human activity on the reproduction of the breeding colony were observed. Rev. Biol. Trop. 54 (4): 1131-1134. …
MR imaging of bilateral paramedian thalamic and mesencephalic infarcts: A case report
2010
We describe MR imaging of bilateral infarction of the paramedian portion of the mesencephalus and thalamus due to an occlusion of the Percheron artery. This entity is due to one of the anatomic variants of the perforating arteries supplying the thalamus and mesenchephalus. Clinically this kind of infarction presents with neurologic impairment as a disorder of consciousness, memory dysfunctions, various types of vertical gaze palsy and psychic changes, which need to be differentiated from delirium and coma. At MRI evaluation infarction of the paramedian portion of thalami and midbrain, with a “butterfly wings” pattern, was demonstrated as high signal intensity areas on FLAIR and FSE-T2W ima…
Atypical posterior circulation strokes: a case-based review of rare anatomical variations involved
2021
The circle of Willis is a very important vascular mechanism of protecting against cerebral ischemia, especially when circulation within the main arteries irrigating the brain is somehow impeded. As result of congenital malformation arising early in embryonic development, the fetal-type posterior circle of Willis remains as such during the rest of one's life. Consequently, the posterior cerebral artery (PCA) becomes a branch of the internal carotid artery (ICA), rather than of the basilar artery (BA). Furthermore, the rest of collateral circulation, between the anterior and the posterior regions of the brain, is also negatively affected (e.g., leptomeningeal vessels). The anatomical variant …
Effects of Rice Field Phenology on Breeding Parameters of Heron Colonies in the East of the Iberian Peninsula
2021
Morphological and attachment changes of Lamellodiscus theroni (Monogenea: Diplectanidae) during its post-larval development on fish.
2014
Species of the genus Lamellodiscus Johnston et Tiegs, 1922 (Monogenea: Diplectanidae) are characterised by a complex haptor bearing many different attachment elements: two pairs of main hooks joined by medial bars, 14 peripheral marginal hooks and one or two lamellodiscs, formed by several overlapping sclerotised plates (lamellae). These haptoral structures appear gradually during parasite development and, therefore, attachment strategies vary with developmental stage. The main aim of this work was to study the developmental changes of Lamellodiscus theroni Amine, Euzet et Kechemir-Issad, 2007 under experimental conditions, with special attention to the gradual variations in attachment stra…
Grey Heron Ardea cinerea (N. 5); Little Egret Egretta garzetta (N. 6); Little Ringed Plover Charadrius dubius (N. 7); Temminck’s Stint Calidris temmi…
2019
Grey Heron Ardea cinerea; Little Egret Egretta garzetta; Little Ringed Plover Charadrius dubius; Temminck’s Stint Calidris temminckii; Barn Owl Tyto alba.
Matter and Form in Sixteenth-Century Spain: Some Case Studies
2012
In the last few decades, scholars have rethought the history of matter theories in important ways, particularly with respect to the sources, origins and antecedents of atomism and corpuscularianism in the seventeenth century. In particular, recent commentators have shown that the supposed opposition between atomism and Aristotelianism is insufficient for understanding the historical development of matter theories and their conceptual plurality. Along with corpuscular doctrines dating back to Antiquity, such as those of Heron or Asclepiades, well treated in Lasswitz’s classic work, certain aspects of the Aristotelian corpus and tradition have contributed in important ways to subsequent corpu…
Helminth communities of herons (Aves: Ardeidae) in southern Italy
2016
The helminth communities of nine species of herons from southern Italy were studied and compared. Of 24 taxa found including seven digeneans, seven nematodes, six cestodes and four acanthocephalans, only five taxa were found in more than one heron species, and five of the 21 taxa that could be identified to species level were classified as 'heron specialists'. The total number of helminth species per heron species ranged from 1 in Botaurus stellaris to 9 in Ixobrychus minutus with infection levels generally low. A statistical comparison was carried out for herons with a sample size >. 5. At the infracommunity level, only I. minutus clearly differed from other heron species. Diversity parame…
Maschere di Pietra e di Teatro nel Tardobarocco degli Iblei
2008
Il saggio analizza le peculiarità figurative e le valenze simboliche dei mascheroni tardobarocchi iblei. Il repertorio tematico e i caratteri formali delle sculture sono messi in relazione alle maschere funerarie, ai reperti degli Antiquaria di Ragusa e Camarina e agli esiti scultorei del gotico mediterraneo, che nello spazio comitale visse una virtuosa stagione in massima parte cancellata dal terremoto del 1693. Le forme marcate e iperrealistiche, simboliche, a tratti seriali, messe in scena dai mascheroni tardobarocchi sono invenzioni nel senso etimologico del termine, in quanto memoria della continuità di una cultura figurativa e artigianale che trae fondamento dalla tradizione locale, d…