Search results for "CAPE"
showing 10 items of 1938 documents
Eugène Ciceri (1813-1890) : Peindre, lithographier et enseigner le paysage au XIXe siècle
2020
The primary aim of the thesis is to expose the artist’s main biographical lines, which will appear as partly linked to his family background, involving him in the artistic world very early and influencing his life course, on a private but mostly on a professional level, and this throughout a long period covering three quarters of the 19th century.In the first part of the thesis the work of Eugène Ciceri as a painter will be explored - a work over which a certain amount of confusion has remained until now - in order to detect its main strengths and show how the artist develops his own grammar of landscaping. At first described as dense and diversified, his lithographic production will then b…
THE HOUSE THAT IS NOT THERE: THE HOME FEELING IN JONATHAN RABAN’S LANGUAGE IN FOREIGN LAND
2021
This work aims to analyse the novel of the journalist and novelist Jonathan Raban, Foreign Land, trying to highlight how, through the language used, the author manages to elaborate a personal, intimate and even dramatic vision of themes such as the relationship between man and the environment, the sense of uprooting and the love for the sea that are typical themes of travel literature within which this novel is enrolled. More specifically, the text, taken from a work of reading analysis and translation of the Rabanian work from English to Italian, aims to highlight the metaphorical dimension of the home feeling made particularly effective by the parallelism between the inner dimension of th…
The neuropeptide Pth2 modulates social behavior and anxiety in zebrafish
2021
SummaryAnimal behavior is strongly context-dependent and behavioral performance is often modulated by internal state. In particular, different social contexts can alter anxiety levels and modulate social behavior. The vertebrate-specific neuropeptide parathyroid hormone 2 (pth2) is directly regulated by the presence or absence of conspecifics in zebrafish. As its cognate receptor, the parathyroid hormone 2 receptor (pth2r), is widely expressed across the brain, we tested fish lacking the functional Pth2 peptide in several anxiety-related and social paradigms. Rodents lacking PTH2 display increased anxiety-related behavior. Here we show that the propensity to react to sudden stimuli with an …
Distribution and habitat selection of wintering birds in urban environments
1998
Habitat selection of wintering land-birds was studied in 31 human settlements in Finland. A total of 26 wintering bird species representing 5155 individuals were observed. Between-year variation (CVB%) and short-term fluctuation within one winter (CVW%) in species richness (CVB=10% CVW=15%) were low, as were total numbers of birds (CVB=22% CVW=24%) and populations of the most common bird species (CVB=20–40% CVW=15–47%). The most abundant bird species (e.g., Passer domesticus, Parus major and Pica pica) occurred in most of the study sites. The total densities of omnivorous birds, sedentary birds and bird species that commonly use feeding tables were higher in a heavily urbanized areas than i…
Patterns of nestling provisioning by a single‐prey loader bird, Great TitParus major
2009
Capsule Nestling provisioning rates depend on nestling age and number, and on time of season, but not on time of day. Aims To determine patterns of nestling provisioning, the effort made by the parents, and the factors which affect them. Methods Mechanical counters to determine food provisioning patterns in 229 Great Tit Parus major nests over 4 years. Results Feeding frequency per chick showed a linear increase with nestling age and total feeding frequency stabilized towards the end of the nestling period. The number of visits per nest increased linearly, while those per nestling decreased linearly with brood‐size. Feeding rates per nest declined throughout the breeding season parallel to …
Environmental DNA analysis indicates that migration barriers are decreasing the occurrence of European eel (Anguilla anguilla) in distance from the s…
2020
Abstract The European eel (Anguilla L.) is considered critically endangered by the IUCN Red List, and recruitment remains low. One of the challenges for the species today is migration barriers that limit their habitat. Along the Norwegian coast, like in other countries, the abundance of eels appears to decrease with distance from the sea. This pattern may be a result of factors like water temperature, water quality, competition, and habitat suitability and availability. This study aims to use environmental DNA (eDNA) analysis to investigate the potential relationship between migration barriers and the decreasing occurrence of eels in distance from the sea by the coast of southern Norway. Si…
Modulation of Hedgehog target gene expression by the Fused serine-threonine kinase in wing imaginal discs
1998
0925-4773 doi: DOI: 10.1016/S0925-4773(98)00130-0; The Fused (Fu) serine–threonine kinase and the Suppressor of fused (Su(fu)) product are part of the Hedgehog (Hh) signalling pathway both in embryos and in imaginal discs. In wing imaginal discs, the Hh signal induces Cubitus interruptus (Ci) accumulation and activates patched (ptc) and decapentaplegic (dpp) expression along the anterior/posterior (A/P) boundary. In this paper, we have examined the role of the Fu and Su(fu) proteins in the regulation of Hh target gene expression in wing imaginal discs, by using different classes of fu alleles and an amorphic Su(fu) mutation. We show that, at the A/P boundary, Fu kinase activity is involved …
Acquired IFNγ resistance impairs anti-tumor immunity and gives rise to T-cell-resistant melanoma lesions
2016
Melanoma treatment has been revolutionized by antibody-based immunotherapies. IFNγ secretion by CD8+ T cells is critical for therapy efficacy having anti-proliferative and pro-apoptotic effects on tumour cells. Our study demonstrates a genetic evolution of IFNγ resistance in different melanoma patient models. Chromosomal alterations and subsequent inactivating mutations in genes of the IFNγ signalling cascade, most often JAK1 or JAK2, protect melanoma cells from anti-tumour IFNγ activity. JAK1/2 mutants further evolve into T-cell-resistant HLA class I-negative lesions with genes involved in antigen presentation silenced and no longer inducible by IFNγ. Allelic JAK1/2 losses predisposing to …
Paysage & [et] infrastructures de transport : modélisation des impacts des infrastructures sur les réseaux écologiques
2013
The development of linear infrastructures leads to the fragmentation and the artificialisation of the landscape across scales. Landscape fragmentation is a spatial process that is accompanied by a progressive decrease of the connectivity between the elements needed to conduct ecological processes. Thus, maintaining a good level of connectivity between natural habitats, compatible with human activities, has become a major issue for the preservation of biodiversity.By mobilizing methods from graph theory and landscape ecology, the thesis seeks to demonstrate the value of landscape graphs to model ecological networks and analyze impacts of transportation infrastructures at regional scale.The m…
Transformation des milieux naturels et conscience environnementale à la fin du Moyen Âge : une esthétique du paysage manquante ?
2010
À partir du XIVe siècle, des exemples de plus en plus nombreux montrent que la société médiévale percevait les transformations environnementales opérées par l’action anthropique. Une réflexion, tendant à octroyer à l’aménagement humain du milieu naturel une part des responsabilités en cas de catastrophes, apparaît ainsi régulièrement dans un discours qui opposait la plupart du temps l’aspect négatif et dangereux de cette transformation du paysage à la nostalgie d’une nature « ancienne », marquée par la stabilité. Un souci environnemental important de préservation du milieu naturel, faisant plonger très loin les racines du discours écologique contemporain, se manifeste ainsi très tôt. Faisan…