References of "2003"
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See detailLe lérot: trois études en une enquête
Libois, Roland ULg

Learning material (2003)

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See detailLe décret relatif au permis d'environnement
Delnoy, Michel ULg

Book published by edi.pro (2003)

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See detailTrophic habits and aquatic microhabitat use in gilled immature, paedomorphic and metamorphic Alpine newts (Triturus alpestris apuanus) in a pond in central Italy
Denoël, Mathieu ULg; Andreone, F.

in Belgian Journal of Zoology (2003), 133(2), 95-102

Current evolutionary models suggest that the presence of heterogeneous habitats favours the evolution of polymorphisms. In such cases, alternative phenotypes can coexist because they use different ... [more ▼]

Current evolutionary models suggest that the presence of heterogeneous habitats favours the evolution of polymorphisms. In such cases, alternative phenotypes can coexist because they use different resources. Facultative paedomorphosis is a heterochronic polymorphism in which a morph - the paedomorph - retains larval traits during the adult stage while the other morph - the metamorph - is fully metamorphosed. The aim of this study was to determine the microhabitat use and the diet of Alpine newt paedomorphs, metamorphs and immatures (Triturus alpestris apuanus) coexisting in a small pond in Tuscany, central Italy, i.e. in a habitat where dimorphism is not expected. Although the two adult morphs do not use exactly the same resources, resource partitioning was weaker than in deep Alpine lakes. Nevertheless, the diet of immature gilled newts (larvae) differed from that of adults (metamorphs and paedomorphs). While the larvae eat a large number of planktonic organisms, the adults focus on insect larvae and newt eggs. The differences in resource use favour the coexistence of aquatic juveniles and adults. In the studied pond, facultative paedomorphosis was previously shown to be favoured by a precocious maturity of the paedomorphs. This study shows that the coexistence of paedomorphs and metamorphs may also be supported by some dietary and spatial segregation, although any advantages gained by this pattern are rather limited in the adult stage. [less ▲]

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See detailComparaison of three supplements high in linseeds or linseed oil in dairy cows
Cabaraux, Jean-François ULg; Marche, C.; Hornick, Jean-Luc ULg et al

in Book of absracts of the 54th Annual Meeting of the European Association for Animal Production (2003)

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See detailDes Fleurs de saints à l'odeur de sainteté. L'hagiographie en terres wallonnes,
George, Philippe ULg; Raschevitch, Sonia ULg

in Dumortier, Jean-Louis; George, Philippe (Eds.) Regards sur le XVIIe siècle. Feuillets de la Cathédrale de Liège. (2003)

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See detailHistoire de la littérature belge francophone (1830-2000)
Bertrand, Jean-Pierre ULg; Biron, Michel; Denis, Benoît ULg et al

Book published by Fayard (2003)

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See detailUn fantôme au XVIIe siècle
George, Philippe ULg

in Dumortier, Jean-Louis; George, Philippe (Eds.) Regards sur le XVIIe siècle. Feuillets de la Cathédrale de Liège (2003)

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See detailTrépas impériaux : une étude comparative de l'expression narrative chez Tacite et Suétone
Longrée, Dominique ULg

in Jacquin, Gérard (Ed.) Le récit de la mort, Écriture et Histoire (2003)

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See detailThéorie économique et marchandisation des services non marchands
Mertens de Wilmars, Sybille ULg; Lefebvre, Mathieu ULg

in Non Marchand : Management, Droit et Finance (2003), (11), 11-27

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See detailOne-pot surfactant assisted synthesis of aluminosilicate macrochannels with tunable micro- or mesoporous wall structure
Léonard, Alexandre ULg; Blin, J.-L.; Su, B.-L.

in Chemical Communications (2003), 9(20), 2568-2569

A one-step surfactant assisted synthesis pathway was developed leading to novel hierarchical macro-meso- (or micro-)porous aluminosilicates made of an assembly of macrochannels with openings between 0.5 ... [more ▼]

A one-step surfactant assisted synthesis pathway was developed leading to novel hierarchical macro-meso- (or micro-)porous aluminosilicates made of an assembly of macrochannels with openings between 0.5 and 2.0 μm and wormhole-like amorphous walls with tunable pore sizes. [less ▲]

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See detailSong activation by testosterone is associated with an increased catecholaminergic innervation of the song control system in female canaries
Appeltants, D.; Ball, G. F.; Balthazart, Jacques ULg

in Neuroscience (2003), 121(3), 801-814

In canaries, singing and a large number of morphological features of the neural system that mediates the learning, perception and production of song exhibit marked sex differences. Although these ... [more ▼]

In canaries, singing and a large number of morphological features of the neural system that mediates the learning, perception and production of song exhibit marked sex differences. Although these differences have been mainly attributed to sex-specific patterns of the action of testosterone and its metabolites, the mechanisms by which sex steroids regulate brain and behavior are far from being completely understood. Given that the density of immunoreactive catecholaminergic fibers that innervate telencephalic song nuclei in canaries is higher in males, which sing, than in females, which usually do not sing, we hypothesized that some of the effects induced by testosterone on song behavior are mediated through the action of the steroid on the catecholaminergic neurons which innervate the song control nuclei. Therefore, we investigated in female canaries the effects of a treatment with exogenous testosterone on song production, on the volume of song control nuclei, and on the catecholaminergic innervation of these nuclei as assessed by immunocytochemical visualization of tyrosine hydroxylase. Testosterone induced male-like singing in all females and increased by about 80% the volume of two telencephalic song control nuclei, the high vocal center (HVC) and the nucleus robustus archistriatalis (RA). Testosterone also significantly increased the fractional area covered by tyrosine hydroxylase-immunoreactive structures (fibers and varicosities) in most telencephalic song control nuclei (HVC, the lateral and medial parts of the magnocellular nucleus of the anterior neostriatum, the nucleus interfacialis, and to a lesser extent RA). By contrast, testosterone did not affect the catecholaminergic innervation of the telencephalic areas adjacent to HVC and RA. Together these data demonstrate that, in parallel to its effects on song behavior and on the morphology of the song control system, testosterone also regulates the catecholaminergic innervation of most telencephalic song control nuclei in canaries. The endocrine regulation of singing may thus involve the neuromodulatory action of specialized dopaminergic and/or noradrenergic projections onto several key parts of the song control system. (C) 2003 IBRO. Published by Elsevier Ltd. All rights reserved. [less ▲]

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See detailSpace-Time Adaptive Processing (STAP): an Overview
Verly, Jacques ULg

Scientific conference (2003)

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See detail2. “La Parure“ di Maupassant. Strategie conclusive ed echi flaubertiani
Benzoni, Pietro ULg

in Strumenti Critici (2003), 103(3), 417-438

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See detailL’herpèsvirose canine
Ronsse, V.; Poulet, H.; Verstegen, J. et al

in Annales de Médecine Vétérinaire (2003), 147(2, APR-MAY), 65

Canine herpesvirus is known to be a causal agent of reproduction disorders and diseases of the upper respiratory system. Subclinical infections are also frequently observed. The interest for the virus has ... [more ▼]

Canine herpesvirus is known to be a causal agent of reproduction disorders and diseases of the upper respiratory system. Subclinical infections are also frequently observed. The interest for the virus has risen in recent years especially since latency has been demonstrated and a new vaccine has been developed. In this review article we will successively deal with virus characteristics, epidemiology, pathogenesis, clinical signs, diagnosis as well as therapy and prevention. [less ▲]

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See detailCarbon and nitrogen isotopic ratios of the seagrass Posidonia oceanica: Depth-related variations
Lepoint, Gilles ULg; Dauby, Patrick ULg; Fontaine, Michael ULg et al

in Botanica Marina (2003), 46(6), 555-561

Nitrogen (delta(15)N) and carbon (delta(13)C) isotopic compositions of Posidonia oceanica were determined during three seasons along a bathymetric gradient (438 m depth).The delta(15)N values are low (2.2 ... [more ▼]

Nitrogen (delta(15)N) and carbon (delta(13)C) isotopic compositions of Posidonia oceanica were determined during three seasons along a bathymetric gradient (438 m depth).The delta(15)N values are low (2.2+/-0.9%) and variable.They do not show any relation to depth or sampling dates. There is a significant difference between the delta(15)N values of the youngest and the oldest leaves, probably as a result of N resorption and senescing during leaf ageing. The delta(13)C values of young Posidonia leaves vary with depth, showing the relationship between delta(13)C values and primary productivity rate, and the use of a bicarbonate/CO2 mixture as an inorganic carbon source. The delta(13)C values of the oldest P. oceanica leaves are depleted in C-13 compared to those of young leaves. This modification of the C-13 signatures in relation to leaf age is particularly important between 20 and 29 m depth. This modification could be related to photosynthetic rate change during ageing, but also to change in carbohydrate composition and content. [less ▲]

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