References of "2003"
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See detailMemory processing during human sleep as assessed by functional neuroimaging.
Maquet, Pierre ULg; Peigneux, Philippe ULg; Laureys, Steven ULg et al

in Revue Neurologique (2003), 159(11 Suppl), 627-9

Sleep is believed to participate in memory consolidation, possibly through off-line processing of recent memory traces. In this paper, we summarize functional neuroimaging data testing this hypothesis ... [more ▼]

Sleep is believed to participate in memory consolidation, possibly through off-line processing of recent memory traces. In this paper, we summarize functional neuroimaging data testing this hypothesis. First, sleep deprivation disrupts the processing of recent memory traces and hampers the changes in functional segregation and connectivity which underpin the gain in performance usually observed in subjects allowed to sleep on the first post-training night. Second, experience-dependent changes in regional brain activity occur during post-training sleep. These changes are shown to be related to the processing of high-level material and to be modulated by the amount of learning achieved during the training session. These changes do not involve isolated brain areas but entire macroscopic cerebral networks. These data suggest a role for sleep in the processing of recent memory traces. [less ▲]

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See detailDes lumières et ombres I. La liberté dans les lettres, de la Renaissance à nos jours
Dumortier, Jean-Louis ULg; Liemans, Michel; Marion, Claude ULg

Book published by Van In (2003)

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See detailOptimal design of outdoor lighting systems by genetic algorithms - Discussion
Embrechts, Jean-Jacques ULg

in Lighting Research & Technology (2003), 35(3), 278-280

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See detailCAPRINE ARTHRITIS ENCEPHALITIS VIRUS (CAEV) EXPRESSING THE SIV VPR/VPX GENES INDUCES PROPERTIES SIMILAR TO ANTI-CANCER DRUGS
Bouzar, Amel ULg; Villet, Stéphanie; Morin, Thierry et al

in Bulletin of the Veterinary Institute in Pulawy =Biuletyn Instytutu Weterynarii w Puławach (2003)

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See detailEffect of nutrient enrichments on the bacterial assemblage of Antarctic soils contaminated by diesel or crude oil
Delille, Daniel; Pelletier, Emilien; Delille, Bruno ULg et al

in Polar Record (2003), 39(4), 309-318

There is an urgent need to develop new technologies to address the problem of soil remediation in high-latitude regions. A field study was initiated in January 1997 in two contaminated soils in Terre ... [more ▼]

There is an urgent need to develop new technologies to address the problem of soil remediation in high-latitude regions. A field study was initiated in January 1997 in two contaminated soils in Terre Adélie (Antarctica) with the objective of determining the long-term effectiveness of two bioremediation agents on total and hydrocarbon-degrading microbial assemblages under severe Antarctic conditions. This study was conducted in two steps, from January to July 1997 and from February to November 1999 in the Géologie Archipelago (Terre Adélie, 66°40′S, 140°01′E). Changes in bacterial communities were monitored in situ after crude oil or diesel addition in a series of 600 cm2 soil sectors (20×30 cm). Four contaminated sectors were used for each experiment: diesel oil (10 ml), diesel oil (10 ml) + fertilizer (1 ml), Arabian light crude oil (10 ml), and crude oil (10 ml) + fertilizer (1 ml). Two different bioremediation agents were used: a slow release fertilizer Inipol EAP-22 (Elf Atochem) in 1997 and a fish compost in 1999. Plots were sampled on a regular basis during a three-year period. All samples were analysed for total, saprophytic psychrophilic, and hydrocarbon-utilising bacteria. A one order of magnitude increase of saprophytic and hydrocarbon-utilising micro-organisms occurred during the first month of the experiment in most of the contaminated enclosures, but no clear differences appeared between fertilized and unfertilized plots. Diesel-oil contamination induced a significant increase of all bacterial parameters in all contaminated soils. Crude-oil contamination had no clear effects on microbial assemblages. It was clear that the microbial response could be rapid and efficient in spite of the severe weather conditions. However, microbial growth was not clearly improved in the presence of bioremediation agents. [less ▲]

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See detailA new Mars ionosphere/airglow Model between 60 and 500 km altitude
Witasse, Oliver; Blelly, P.; Lilensten, Jean et al

in Proceedings of the Workshop “Mars Atmosphere Modelling and Observations” (2003)

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See detailEffet de la durée d’application d’un stimulus gravitationnel sur la formation de bois de tension et de bois opposé dans de jeunes pousses de peuplier (Populus euramericana cv ‘Ghoy’)
Jourez, Benoît ULg; Avella-Shaw, Thomas

in Annals of Forest Science : a Multidisciplinary and International Journal (2003), 60

De jeunes pousses de Peuplier Ghoy ont été maintenues artificiellement inclinées pendant des durées croissantes, afin d’induire la formation de tissus de bois de tension et de bois opposé en réaction au ... [more ▼]

De jeunes pousses de Peuplier Ghoy ont été maintenues artificiellement inclinées pendant des durées croissantes, afin d’induire la formation de tissus de bois de tension et de bois opposé en réaction au stimulus gravitationnel. Il apparaît que ces pousses sont susceptibles de percevoir et de réagir à un stimulus extrêmement bref à l’échelle d’une période de végétation. Après un temps de présentation de 6 heures, l’ensemble des pousses ont formé un arc de bois opposé. Toutefois, sur la face supérieure, un temps compris entre 24 et 48 heures est nécessaire pour qu’elles perçoivent la modification de leur état d’équilibre et se mettent à former du bois de tension. Après un temps de latence de 48 heures, la formation de fibres gélatineuses est déjà observée sur la face supérieure des tiges. L’augmentation de la durée du stimulus a des répercussions sur le nombre de fibres gélatineuses et sur l’angle d’ouverture de l’arc de bois de tension. Sur la face inférieure, les fibres de bois opposé se forment à un rythme moins soutenu, conduisant à une excentricité de la moelle dans la section de la tige. Le redressement des pousses est effectif après une durée de stimulus comprise entre 4 et 8 jours. [less ▲]

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See detailWP7: Construction of a prototype environmental chamber, final report
Andre, Philippe ULg

Report (2003)

Rapport du WP7 du projet européen "Improvement of Transport Safety by control of fog production in a chamber", qui s'est déroulé entre 2000 et 2003, financé par l'Union Européenne

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See detailLa commercialisation des produits éthiques: études de cas dans les secteurs de l'alimentation bio et équitable
Mouchamps, Hugues ULg

Master's dissertation (2003)

Social enterprises commercializing ethical products present shortcomings in their marketing strategies, especially in the place and promotion dimensions.

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See detailApproximation algorithms for the design of SDH/SONET networks
Brauner, Nadia; Crama, Yves ULg; Finke, Gerd et al

in RAIRO : Operations Research = Recherche Opérationnelle (2003), 37(4, OCT-DEC), 235-247

In this paper, a graph partitioning problem that arises in the design of SONET/SDH networks is defined and formalized. Approximation algorithms with performance guarantees are presented. To solve this ... [more ▼]

In this paper, a graph partitioning problem that arises in the design of SONET/SDH networks is defined and formalized. Approximation algorithms with performance guarantees are presented. To solve this problem efficiently in practice, fast greedy algorithms and a tabu-search method are proposed and analyzed by means of an experimental study. [less ▲]

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See detailLe Musée en Piconrue de Bastogne
Donneau, Olivier ULg

in Invitation au musée : Courrier du patrimoine culturel de la Communauté française (2003), 4

Courte présentation des activités du Musée en Piconrue de Bastogne.

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See detailLes contradictions de la violence légitime
Verjans, Pierre ULg

in Beaufays, Jean (Ed.) La démocratie après le 11 septembre (2003)

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See detailEffect of somatic growth, strain and sex on double-chamber plethymosgraphic respiratory function values in healthy mice
Flandre, Th.; Leroy, Pascal ULg; Desmecht, Daniel ULg

in Journal of Applied Physiology (2003), 94(3), 1129-1136

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See detailFungal lectin, XCL, is internalized via clathrin-dependent endocytosis and facilitates uptake of other molecules.
Francis, Frédéric ULg; Marty-Detraves, Claire; Poincloux, Renaud et al

in European Journal of Cell Biology (2003), 82(10), 515-22

The lectin isolated from Xerocomus chrysenteron (XCL) displays a toxic activity towards insects. In order to assess its possible mode of action and to gather useful data for its potential use in insect ... [more ▼]

The lectin isolated from Xerocomus chrysenteron (XCL) displays a toxic activity towards insects. In order to assess its possible mode of action and to gather useful data for its potential use in insect-resistant transgenic plants, we investigated the effects of XCL at the cellular level. Immunofluorescence microscopy studies revealed that XCL is rapidly internalized into small endocytic vesicles that further coalesce in the perinuclear region. We show that XCL is endocytosed by the clathrin-dependent pathway, and is delivered to late endosome/lysosome compartments. The internalization of XCL seems to be general since it occurs in different cell types such as insect (SF9) or mammalian (NIH-3T3 and Hela) cell lines. In the presence of XCL, the uptake of GFP and BSA is greatly enhanced, demonstrating that XCL facilitates endocytosis. Thus, XCL could serve as a delivery agent to facilitate the endocytosis of proteins that do not enter the cell alone. [less ▲]

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See detailAge, sex, and weight at weaning influence organ weight and gastrointestinal development of weanling pigs
Pluske, J. R.; Kerton, D. J.; Cranwell, P. D. et al

in Australian Journal of Agricultural Research (2003), 54(5), 515-527

The present study was designed to determine the interrelationships between sex, weaning age, and weaning weight on aspects of physiological and gastrointestinal development in pigs. Forty-eight Large ... [more ▼]

The present study was designed to determine the interrelationships between sex, weaning age, and weaning weight on aspects of physiological and gastrointestinal development in pigs. Forty-eight Large White x Landrace pigs were used in a factorial arrangement with the respective factors being: age at weaning ( 14 or 28 days), weight at weaning ( heavy or light), sex ( boar or gilt), and time after weaning ( 1, 7, and 14 days). At weaning, 48 pigs were removed from the sow; 16 pigs were then fasted for 24 h before euthanasia for determination of organ weights, gut histology, and enzymology, and 32 pigs were offered a high quality pelleted weaner diet ad libitum for subsequent assessment of organ weights, histology, and enzymology at 7 and 14 days after weaning. On Day 6 and 13 after weaning, 2 pigs from each group had their feed removed, and 24 h later were euthanased and similar measurements were taken. In general, the data highlighted the overall gastrointestinal underdevelopment of pigs weaned at 2 weeks of age and of pigs weaned light-for-age at either 2 or 4 weeks. Heavier body organs, gastrointestinal organs, and accessory digestive organs observed after weaning, except for the spleen, presumably reflected the increase in substrates available for cellular growth as feed intake increased after weaning, and the development of organs required to process this feed. Interestingly, the relative weights (% of liveweight) of the stomach and small intestine and, to a lesser extent, the caecum and colon, were greater in the light, 14-day-old weaned pigs, but these differences diminished with increasing time after weaning. Consistent effects due to age, weight, and sex were not observed for villous height and crypt depth, or for the specific activities of the brush-border and pancreatic enzymes measured. However, increases (P < 0.001) in the activities of maltase (P < 0.001), glucoamylase ( P < 0.001), and sucrase (P = 0.020) ( all expressed per gram of mucosa), and that of trypsin ( per gram of pancreas), occurred by 14 days after weaning. This most likely reflected the inducible nature of these enzymes in response to the increasing intake of substrates provided in the diet. In contrast, the specific activity of lactase declined (P = 0.012) in the first 14 days after weaning. These data suggest that pigs weaned at 2 weeks of age and pigs weaned light-for-age at either 2 or 4 weeks have a less developed gastrointestinal tract, and that its development after weaning might proceed differently to that of pigs weaned older and heavier. [less ▲]

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See detailApproche expérimentale des comportements d'anti-prédation chez le tilapia du Nil (Oreochromis niloticus): détection and évaluation des risques de prédation par les juvéniles
Delcourt, Johann ULg

Master of advanced studies dissertation (2003)

Les juvéniles de tilapia du Nil, issus de génération successives élevées en pisciculture depuis 70 ans, sont toujours capables de reconnaitre une menace prédatrice. Ils s'avèrent capables d'adapter leurs ... [more ▼]

Les juvéniles de tilapia du Nil, issus de génération successives élevées en pisciculture depuis 70 ans, sont toujours capables de reconnaitre une menace prédatrice. Ils s'avèrent capables d'adapter leurs comportements face à différents niveau de risques de prédations (absence de prédateur, prédateur passif, prédateur actif). Les jeunes adoptent des comportements d'inspection de type "tit-for-tat" lorsque le prédateur est actif. Les effets de l'alimentation et de la taille du banc sont explorés. [less ▲]

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