References of "2003"
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See detailLes logements vides et les permis d’urbanisme
Halleux, Jean-Marie ULg; Kessler, L.; Lambotte, Jean-Marc ULg et al

Poster (2003, November 19)

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See detailMicroscopy and Particle Characterization
Grandfils, Christian ULg

Conference (2003, November 18)

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See detailOptimisation de la spécificité de l'encodage pour le diagnostic précoce de la maladie d'Alzheimer
Adam, Stéphane ULg

Scientific conference (2003, November 18)

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See detailPregnancy diagnosis in sheep by means of ultrasound and ovine pregnancy-associated glycoprotein (ovPAGs)
Verberckmoes, S; Vandaele, L; De Cat, S et al

in Proceeding of pregnancy diagnosis in sheep by means of ultrasound and ovine pregnancy-associated glycoprotein (2003, November 17)

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See detailPharmacological evaluation of BM-573, a dual thromboxane A(2) receptor antagonist and thromboxane synthase inhibitor, as potential anti-metastatic agent
de Leval, X. J.; Dassesse, T.; Benoit, V. et al

in Blood (2003, November 16), 102(11, Part 2), 72

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See detailTraffic Effects of Driver Assistance Systems – The Approach within INVENT
Benz, T.; Christen, Fréderic ULg; Lerner, G. et al

(2003, November 16)

Within the German Research Initiative INVENT, the partial project „Verkehrliche Wirkung, Recht und Akzeptanz (VRA)“ deals with traffic effects, legal aspects, acceptance and economics of driver assistance ... [more ▼]

Within the German Research Initiative INVENT, the partial project „Verkehrliche Wirkung, Recht und Akzeptanz (VRA)“ deals with traffic effects, legal aspects, acceptance and economics of driver assistance systems. This presentation gives examples for the consulting services of VRA as well as for the early simulations of a driver assistance system. Such simulations vary in scale from basic functions over driving situations and traffic situations to traffic scenarios. Results are presented for the basic functions and driving situations for a stop-and-go extension of adaptive cruise control. [less ▲]

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See detailPalladium-silver sol-gel catalysts for selective hydrodechlorination of 1,2-dichloroethane into ethylene - IV. Deactivation mechanism and regeneration
Heinrichs, Benoît ULg; Noville, Francis ULg; Schoebrechts, Jean-Paul ULg et al

in Journal of Catalysis (2003), 220(1), 215-225

The activity and selectivity of a 1.9% Pd-3.7% Ag/SiO2 catalyst during selective hydrodechlorination of 1,2-dichloroethane into ethylene have been followed in the course of time. The deactivation curves ... [more ▼]

The activity and selectivity of a 1.9% Pd-3.7% Ag/SiO2 catalyst during selective hydrodechlorination of 1,2-dichloroethane into ethylene have been followed in the course of time. The deactivation curves show two distinct periods: an initial period at the very beginning of catalyst operation, that is, during the first 20 operating hours, characterized by a sharp decrease of the rates of both reactions involved in the process (1,2-dichloroethane hydrodechlorination and undesired ethylene hydrogenation) and a second period, after the first 20 operating hours and investigated for more than 600 h, characterized by a clearly slower deactivation. During the initial period, the hydrodechlorination rate decreases less quickly than the hydrogenation rate and this results in a fast increase of ethylene selectivity which reaches a maximum at the end of this period. After the initial period, the hydrodechlorination rate decreases faster than the hydrogenation rate and this results in a slow decrease of ethylene selectivity. A comparison between the physico-chemical properties of the fresh catalyst and of the deactivated one suggests a deactivation mechanism by poisoning or coking of silver sites at the surface of the active Pd-Ag alloy particles whereas palladium sites would remain intact. The selectivity evolution during the second period, that is, after the very first operating hours, is in agreement with such a mechanism. However, the sharp ethylene selectivity increase during the initial operating hours suggests, in addition to the deactivation by silver sites disappearance, the presence of a further nonidentified phenomenon. The characterization of the catalyst after a regeneration treatment including an oxidation step followed by a reduction step shows that this treatment allows restoration near to the physico-chemical properties of the fresh catalyst. (C) 2003 Elsevier Inc. All rights reserved. [less ▲]

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See detailVagus nerve stimulation attenuates heat- and formalin-induced pain in rats
Bohotin, C.; Scholsem, M.; Bohotin, V. et al

in Neuroscience Letters (2003), 351(2), 79-82

The analgesic effect of vagus nerve stimulation (VNS) has not yet been demonstrated in animals with the devices used in the clinic. We studied in awake rats the effects of two VNS protocols on the hind ... [more ▼]

The analgesic effect of vagus nerve stimulation (VNS) has not yet been demonstrated in animals with the devices used in the clinic. We studied in awake rats the effects of two VNS protocols on the hind paw hot water test and compared the results with those previously obtained in the oro-facial formalin test. A stringent duty cycle (20 s on/18 s off) increased heat pain tolerance in both hind paws (average 188%) after 2 h of stimulation. VNS with parameters used in epilepsy (30 s on/5 min off) decreased heat tolerance after 2 h, but produced a significant antinociceptive effect after days of stimulation. VNS may thus be useful in pain disorders, even with the less stringent protocol. (C) 2003 Published by Elsevier Ireland Ltd. [less ▲]

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See detailInfluence de la methyl-b-cyclodextrine sur la cinetique de libération de l'inuline encapsulée dans des liposomes bioadhésifs
Piel, Géraldine ULg; Boulmedarat, Laila; Bochot, Amélie et al

Poster (2003, November 12)

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See detailCrystal structure of the sensor domain of the BlaR penicillin receptor from Bacillus licheniformis
Kerff, Frédéric ULg; Charlier, Paulette ULg; Colombo, Maria Louisa et al

in Biochemistry (2003), 42(44), 12835-12843

As in several staphylococci, the synthesis of the Bacillus licheniformis 749/I beta-lactamase is an inducible phenomenon regulated by a signal-transducing membrane protein BlaR. The C-terminal domain of ... [more ▼]

As in several staphylococci, the synthesis of the Bacillus licheniformis 749/I beta-lactamase is an inducible phenomenon regulated by a signal-transducing membrane protein BlaR. The C-terminal domain of this multimodular protein is an extracellular domain which specifically recognizes beta-lactam antibiotics. When it binds a beta-lactam, a signal is transmitted by the transmembrane region to the intracellular loops. In response, the hydrolytic activity of the BlaR large cytoplasmic L3 loop is induced, and a cascade of reactions is generated, leading to the transcription of the beta-lactamase gene. Here, we describe the crystal structure of the extracellular penicillin-receptor domain of BlaR (residues 346-601) at 2.5 Angstrom resolution in order to understand why this domain, whose folding is very similar to that of class D beta-lactamases, behaves as a highly sensitive penicillin-binding protein rather than a beta-lactamase. Two residues of the BlaR C-terminal domain, Thr452 and Thr542, modify the hydrophobic characteristic of the class D beta-lactamase active site. Both residues seem to be in part responsible for the lack of beta-lactamase activity of the BlaR protein due to the stability of the acyl-enzyme. Although further experimental data are needed to fully understand the transmembrane induction process, the comparison of the BlaR sensor domain structure with those of class D beta-lactamase complexes and penicillin-binding proteins provides interesting elements to hypothesize on possible signal transmission mechanisms. [less ▲]

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See detailSize heterogeneity, cannibalism and competition in cultured predatory fish larvae: biotic and abiotic influences
Kestemont, P.; Jourdan, S.; Houbart, M. et al

in Aquaculture (2003), 227(1-4), 333-356

Growth heterogeneity is a central problem in larviculture and especially in predatory species. It can be influenced by a wide range of intrinsic and environmental factors, of which the respective ... [more ▼]

Growth heterogeneity is a central problem in larviculture and especially in predatory species. It can be influenced by a wide range of intrinsic and environmental factors, of which the respective influences are largely unknown. The role of non-interactive (temperature, day length, light intensity, food availability and composition) and interactive factors (stocking density, initial size heterogeneity, hatching time) on growth, survival and size heterogeneity was measured in larvae and post-larvae of the European seabass Dicentrarchus labrax and Eurasian perch Perca fluviatilis. Embryos hatching later than others were found less competitive than those hatching earlier in both species, but to a greater extent in perch. By contrast, the final size heterogeneity in both species was independent from the initial size heterogeneity or recurrent size sorting. High stocking density had a positive effect on perch larvae, no effect on seabass larvae and a negative impact on the post-larvae of both species, owing principally to density-dependent access to food. Day length and light intensity produced contrasting results in larvae and post-larvae. Larvae of both species performed better under bright light and continuous day length. Post-larvae of seabass performed equally well at different light levels but did better under short day lengths, whereas post-larvae of perch were unaffected by day length but performed better under reduced light levels. Increasing food availability resulted in increasing performance of perch larvae, although cannibalism was higher for submaximal than for maintenance rations. The similarity between the two species at the larval stage, and differences at the post-larval stage can be accounted for by the increasing specialisation towards specific environments and niches. Regarding the impact of rearing factors on growth, survival and size heterogeneity, interactive variables impacted essentially on growth and survival, whereas size heterogeneity was chiefly influenced by non-interactive variables, either directly or indirectly via interactive mechanisms such as cannibalism and size-dependent mortality. (C) 2003 Elsevier B.V. All rights reserved. [less ▲]

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See detailTypologie floristique des cours d’eau luxembourgeois
Sossey Alaoui, Khadija ULg; Thoen, Daniel ULg; Bouxin, Guy et al

Poster (2003, November 08)

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See detailApplication of bioencapsulated proteinase and peptides for wound healing
Markvicheva, E; Dugina, T.; Grandfils, Christian ULg et al

Conference (2003, November 08)

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See detail« Immigration, Intégration et Citoyenneté au regard de la Communication du 3 juin 2003 »
Martiniello, Marco ULg

Scientific conference (2003, November 07)

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