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See detailHet vrij verkeer van beslissingen binnen de Europese Unie : toepassing op het arbeidsrechtelijk contentieux
Wautelet, Patrick ULg

in de Leval, Georges (Ed.) Espace judiciaire et social européen (2003)

In this paper, written with Prof. Marta Pertegás Sender, we give an overview of the achievements made within the EU in securing the mutual recognition and enforcement of court decisions issued in ... [more ▼]

In this paper, written with Prof. Marta Pertegás Sender, we give an overview of the achievements made within the EU in securing the mutual recognition and enforcement of court decisions issued in employment disputes. Particular attention is given to the special regime of employment disputes under the 1968 Brussels Convention and the Regulation 44/2001. [less ▲]

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See detailLe trésor de reliques du Neufmoustier près de Huy. Une part de Terre sainte en pays mosan
George, Philippe ULg

in Bulletin de la Commission Royale d'Histoire (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 detailGuided vortex motion in superconductors with a square antidot array
Silhanek, Alejandro ULg; Van Look, L.; Raedts, S. et al

in Physical Review. B : Condensed Matter (2003), 68(21),

We have measured the in-plane anisotropy of the vortex mobility in a thin Pb film with a square array of antidots. The Lorentz force, acting on the vortices, was rotated by adding two perpendicular ... [more ▼]

We have measured the in-plane anisotropy of the vortex mobility in a thin Pb film with a square array of antidots. The Lorentz force, acting on the vortices, was rotated by adding two perpendicular currents and keeping the amplitude of the net current constant. One set of voltage probes was used to detect the vortex motion. We show that the pinning landscape provided by the square antidot lattice influences the vortex motion in two different ways. First, the modulus of the vortex velocity becomes angular dependent with a lower mobility along the diagonals of the pinning array. Second, the vortex displacement is preferentially parallel to the principal axes of the underlying pinning lattice, giving rise to a misalignment between the vortex velocity and the applied Lorentz force. We show that this anisotropic vortex motion is temperature dependent and progressively fades out when approaching the normal state. [less ▲]

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See detailCultures maraîchères et insectes utiles
Francis, Frédéric ULg; Colignon, Pierre; Haubruge, Eric ULg

in Le Canard déchaîné du Kauwberg (2003), 46

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See detailQuelle formation andragogique pour les enseignants universitaires demain ?
Schmitz, Serge ULg

in Actes du Geoforum (2003), 27

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See detailProduits Fermiers : entre Qualification et Identité
Stassart, Pierre M ULg

Book published by Presses Interuniversitaires Européennes (2003)

Cet ouvrage propose une première «écologie» de la qualité alimentaire. Dans ce domaine, la qualité implique l'intervention de multiples agents naturels, techniques et humains. Comment construisent-ils une ... [more ▼]

Cet ouvrage propose une première «écologie» de la qualité alimentaire. Dans ce domaine, la qualité implique l'intervention de multiples agents naturels, techniques et humains. Comment construisent-ils une définition stable et crédible de la qualité? Cette question est traitée à travers l'analyse d'un projet paysan de type coopératif. Son évolution suite à la rencontre des consommateurs et des transformateurs permet de comprendre pourquoi il s'organise et se différencie autour d'un produit critique: la viande. L'analyse ne se limite pas ici aux produits fermiers. Elle se confronte au secteur de la viande pour éclairer ainsi les processus de formation des «intermédiaires» dans l'allongement de la filière. La question de la crédibilité nous force à déplacer le regard de la qualification du produit vers ceux qui le produisent, vers leurs engagements face aux consommateurs. Ce sont ces engagements qui permettent de gérer le risque alimentaire. [less ▲]

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See detailDevelopment Of A Scar Marker And A Semi-Selective Medium For Specific Quantification Of Pichia Anomala Strain K On Apple Fruit Surfaces
De Clercq, Deborah; Cognet, Stephane; Pujol, Marta et al

in Postharvest Biology & Technology (2003), 29(3), 237-247

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See detailUse of atropine to inhibit vagally mediated baroreceptor reflex in horses undergoing dobutamine stress test
Sandersen, Charlotte ULg; Detilleux, Johann ULg; Delguste, Catherine ULg et al

in Pflügers Archiv : European Journal of Physiology (2003), 446(5), 4

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See detailLa Vie de saint Lambert du chanoine Nicolas (ca 1145) et l’élection du prince-évêque Henri de Leez (1145-1162)
Adam, Renaud ULg

in Bulletin de l'Institut Archéologique Liégeois (2003), 111

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See detailLes mycoplasmes respiratoires bovins: prévalence et propriétés de cyto-adhésion
Thomas, A.; Dizier, Isabelle ULg; SACHSE, K. et al

in Annales de Médecine Vétérinaire (2003), 147(4), 267-272

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See detailCharacterization of UDP-glucose : protein transglucosylase genes from potato.
Wald, F. A.; Kissen, R.; du Jardin, Patrick ULg et al

in Plant Molecular Biology (2003), 52

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See detailInduction of potato (Solanum tuberosum L.) tuber sprouting by hydrogen peroxide.
Bajji, M.; M'Hamdi, M.; Gastiny, F. et al

in Free Radical Research (2003), 37

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See detailLa figure de la Vierge Marie dans l’histoire des femmes et du féminisme
Delfosse, Annick ULg

in Hieros : Bulletin Annuel de la Société Belgo-luxembourgeoise d'Histoire des Religions (2003), 8

The A. offers to study the place of the Marian figure in the women story. She proves to show various points of view: the masculine cleric authorities’ use of the Virgin as an identification norm imposed ... [more ▼]

The A. offers to study the place of the Marian figure in the women story. She proves to show various points of view: the masculine cleric authorities’ use of the Virgin as an identification norm imposed to the women as well as the claim of these latter to define the Virgin also as an emancipation tool. [less ▲]

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See detailOptimisation de la transformation génétique de la pomme de terre par Agrobacterium tumefaciens. Utilisation de la résistance à l'hygromycine comme marqueur sélectif.
M'Hamdi, M.; Rouvière, C.; Rojas-Beltran J et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2003), 7

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See detailEvaluation de la présence des Syrphidae en cultures maraîchères et relation avec les populations aphidiennes.
Francis, Frédéric ULg; Colignon, Pierre; Gaspar, Charles et al

in Abstract book (2003)

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See detailSexual interactions in triadic encounters involving paedomorphic and metamorphic Alpine newts Triturus alpestris
Denoël, Mathieu ULg

Poster (2003)

Sexual selection theories suppose that morphologically-contrasting alternative morphs may exhibit different mating tactics. Facultative paedomorphosis in newts is a suitable process to explore this ... [more ▼]

Sexual selection theories suppose that morphologically-contrasting alternative morphs may exhibit different mating tactics. Facultative paedomorphosis in newts is a suitable process to explore this question because it implies the coexistence of two morphs differing by the presence of gills and epigamic traits. The aim of this study was to find out whether paedomorphs (i.e. adult retaining larval traits) and metamorphs use similar behavioural patterns to attract mates in the presence of a rival and whether there are differences in sexual activity and success between alternative morphs. Sexual interactions in triadic encounters were staged and analysed in a standardised experimental design. The two kinds of males did not differ in terms of sexual activity, spermatophore deposition or female responsiveness. Both rival paedomorphic and metamorphic males exhibited sexual interference, but in most encounters, intruders just disturbed the courting pair. Sperm transfer success was lower in triadic encounters than in dyadic encounters. These results illustrate that inter-morph breeding also occurs in the presence of competitors, but that the success rate of the newts is considerably decreased in such competitive situations. Moreover, newts do not use alternative reproductive tactics depending of their status (i.e. paedomorph or metamorph). [less ▲]

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See detailFeeding habits in a dimorphic metapopulation of the tiger salamander Ambystoma tigrinum nebulosum
Denoël, Mathieu ULg; Wissinger, Scott; Whiteman, Howard

Conference (2003)

Facultative paedomorphosis in salamanders refers to the presence of two ontogenetic pathways in natural populations – paedomorphosis, in which individuals retain gills at the adult stage, and ... [more ▼]

Facultative paedomorphosis in salamanders refers to the presence of two ontogenetic pathways in natural populations – paedomorphosis, in which individuals retain gills at the adult stage, and metamorphosis, in which larvae metamorphose. The Mexican Cut Nature Preserve (Colorado, USA) is composed of numerous ponds which are inhabited by paedomorphic and metamorphic tiger salamanders. While paedomorphs usually stay in the same aquatic habitat all their life, metamorphs may leave water and colonize other ponds. The aim of this study was to determine the feeding habits of the two morphs from this metapopulation. To this end, adults were caught by dip-netting, stomach-flushed, measured and marked. Paedomorphs were only found in permanent waters. Metamorphs were present in all habitats, but particularly in the temporary ponds. Diet differed between ponds – reflecting their invertebrate composition – with a preponderance of either microcrustaceans, fairy shrimp or insect larvae. In ponds inhabited by the two morphs, paedomorphs consumed more prey items. Because dry mass and energy content varied between invertebrates, feeding on some of them, such as fairy shrimp in the temporary ponds where they are abundant, gave high energy intake to the predators. Because such resources are only available to the dispersive morph, metamorphs are at the advantage in being able to avoid competition with paedomorphs in permanent ponds and in using transient resources from the productive temporary waters. [less ▲]

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