References of "2003"
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See detailLes engagements des catholiques pour la paix
Jadoulle, Jean-Louis ULg

in J. PIROTTE et G. ZELIS (Ed.) Pour une histoire du monde catholique au 20e siècle. Wallonie - Bruxelles. Guide du chercheur (2003)

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See detailHygro-thermal application conditions and adhesion
Courard, Luc ULg; Darimont, Anne ULg; Degeimbre, Robert ULg et al

in Seidler, Peter (Ed.) Industrial Floors 03 (2003)

Coatings are designed to protect concrete against environmental aggression. Water is one of the aggressive parameters able to deteriorate the concrete structure. The objectives of this paper are to ... [more ▼]

Coatings are designed to protect concrete against environmental aggression. Water is one of the aggressive parameters able to deteriorate the concrete structure. The objectives of this paper are to present the effects of water (i) during application of coating on the concrete substrate and (ii) pull-off test. Semi-permanent moisty state produced by absorption from the uncoated face, total immersion or diffusion of water from the back face of the substrate are analysed. Water vapour diffusion and influence of hydrophobic treatment are also investigated. A classification based on increasing influence of the tests and application conditions on adhesion is proposed and clearly points out the negative effect of capillary action from the uncoated face. [less ▲]

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See detailUn incunable de l'archevêque François Buisseret (1549-1615) : Réserve Précieuse de la Bibliothèque royale à Bruxelles, Inc B 1277
Adam, Renaud ULg

in Annales de la Société Archéologique de Namur (2003), 77

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See detailHow do paedomorphic newts cope with lake drying?
Denoël, Mathieu ULg

in Ecography (2003), 26(4), 405-410

Paedomorphosis, in which adult individuals retain larval traits, is widespread in newts and salamanders. Most evolutionary models predict the maintenance of this life-history trait in favourable aquatic ... [more ▼]

Paedomorphosis, in which adult individuals retain larval traits, is widespread in newts and salamanders. Most evolutionary models predict the maintenance of this life-history trait in favourable aquatic habitats surrounded by hostile terrestrial environments. Nevertheless, numerous ponds inhabited by paedomorphic individuals are unpredictable and temporary. In an experimental framework, I showed that paedomorphic newts were able to metamorphose and thus survive in the absence of water. However, the mere decrease of water level or the life space do not seem to induce metamorphosis in paedomorphs. On the contrary, drying up induces almost all individuals to move on land and after that to colonize other aquatic sites located nearby. Such terrestrial migrations allow survival in drying conditions without metamorphosis as long as the distances of terrestrial migration are short. These results are consistent with the presence of paedomorphs in drying ponds and are in favor of classic optimality models predicting metamorphosis in unfavorable environments. [less ▲]

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See detailLa transformation et l'utilisation du bois de peuplier
Leclercq, André; Jourez, Benoît ULg

in Le Peuplier en Wallonie (2003)

The poplar wood has been largely used (frame – carpentry packing – paper pulp – sabot manufacture – furniture – rotary peeling for panels and packaging). Some uses of the past were progressively abandoned ... [more ▼]

The poplar wood has been largely used (frame – carpentry packing – paper pulp – sabot manufacture – furniture – rotary peeling for panels and packaging). Some uses of the past were progressively abandoned for tropical species or softwood. But the poplar is now largely used for the rotary peeling process, where its characteristics are appropriated and appreciated. The products not suitable for rotary peeling are used for packaging and ships for panel industry. In the past inside the important wooded areas was never considered as an valuable species while it was used in areas of small forests. Indeed for products with little added value the transportation costs become paramount and in such a case the production of poplars outside large forests become an advantage. A better knowledge of its capabilities during the various stages of its transformation and of its behaviour under various treatments has made it possible to look for new markets so as to enlarge the possibility of use. [less ▲]

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See detailProbing the tacticity of ring-opened metathesis polymers of norbornene and norbornadiene diesters by NMR spectroscopy
Delaude, Lionel ULg; Demonceau, Albert ULg; Noels, Alfred ULg

in Bencze, Laszlo; Imamoglu, Yavuz (Eds.) Novel metathesis chemistry: designing well-defined initiator systems for specialty chemical synthesis, tailored polymers and advanced material application (2003)

This chapter summarizes the various NMR experiments that were applied to probe the main stereochemical features of polymers prepared by ring-opening metathesis polymerization (ROMP) of 2,3 ... [more ▼]

This chapter summarizes the various NMR experiments that were applied to probe the main stereochemical features of polymers prepared by ring-opening metathesis polymerization (ROMP) of 2,3-dicarboalkoxynorbornadienes and 2,3-dicarboalkoxynorbornenes catalyzed by the dichloro ruthenium arene dimer (RuCl2(p-cymene))2 in the presence of trimethylsilyldiazomethane (TMSD). Direct spectroscopic methods based on the examination of cross-coupling peaks in polymers derived from optically active monomers (1H COSY NMR) and indirect methods based on the analysis of the hydrogenated derivatives of unsaturated parent polyolefins (1H and 13C NMR) led to the same conclusion. They both showed that high trans, highly isotactic polymers were formed using the ruthenium-arene catalyst precursor. [less ▲]

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See detailEffect of hemicellulase preparations on performance parameters, intestinal viscosity and apparent nutrient digestibility of male broilers fed a wheat-based diet
Vandeplas, Sabrina ULg; Beckers, Yves ULg; Thewis, André ULg

Poster (2003)

Three experiments were conducted to investigate the mode of action of 5 hemicellulases supplemented to wheat-based broiler diets. Performances parameters and digesta viscosity were measured during growth ... [more ▼]

Three experiments were conducted to investigate the mode of action of 5 hemicellulases supplemented to wheat-based broiler diets. Performances parameters and digesta viscosity were measured during growth period. Total collection of excreta was carried out for determination of AMEn content of the diets and of apparent crude fat, Kjeldahl-nitrogen and crude cellulose digestibilities. Addition of xylanase improve daily body gain by 1 to 6% and feed conversion ration by 1,5 to 4%, as the apparent nutrient digestibility and the content of AMEn in the diets supplemented with enzymes. Although viscosity values seemed not correled to improved performances, Grindazym G shows an increase in the digesta viscosity for all the period of measurement. It can be concluded that the beneficial action of xylanases is more due to the improved release of the nutrients entrapped by the NSP, following degradation of these structures, than to the generally accepted decrease in digesta viscosity. [less ▲]

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See detailOptimisation Of Expression And Immobilized Metal Ion Affinity Chromatographic Purification Of Recombinant (His)(6)-Tagged Cytochrome P450 Hydroperoxide Lyase In Escherichia Coli
Delcarte, J.; Fauconnier, Marie-Laure ULg; Jacques, Philippe ULg et al

in Journal of Chromatography B-Analytical Technologies In the Biomedicaland Life Sciences (2003), 786(1-2),

Fatty acid hydroperoxide lyase (HPL) is a cytochrome P450 acting on fatty acid’s hydroperoxides in many plants. The optimisation of the expression of recombinant (His) -tagged HPL in Escherichia coli is ... [more ▼]

Fatty acid hydroperoxide lyase (HPL) is a cytochrome P450 acting on fatty acid’s hydroperoxides in many plants. The optimisation of the expression of recombinant (His) -tagged HPL in Escherichia coli is described: the highest HPL 6 production yield were obtained with TB medium supplemented with 2.5 mM d-aminolevulinic acid and 0.5 mM IPTG. For the first time, the time course expression of a plant P450 in a bench-scale fermentor is detailed and the amount of recombinant HPL production is 16.3 mg/ l. The UV–Visible spectrum of the recombinant (His) -tagged HPL have been recorded after a Ni -based affinity chromatography (IMAC). [less ▲]

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See detailUne correspondance entre Liège et Utrecht. Les activités épistolaires d’un cistercien janséniste de la fin du 18e siècle
Henneau, Marie-Elisabeth ULg

in Hurel, Odon (Ed.) Érudition et commerce épistolaire. Jean Mabillon et la tradition monastique (2003)

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See detailBelgian Report to the IAG-subcommission “EUREF”
Bruyninx, Carine; Defraigne, Pascale; Ducarme, Bernard et al

in Proceedings of EUREF 2002 Symposium (2003)

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See detailPresent day and geologic deformation rates in the Ardenne and the lower Rhine embayment (North-western Europe)
Van Camp, Michel; Camelbeeck, Thierry; Vanneste, K. et al

Conference (2003)

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See detailRegulation of training system for adults in educational technology
Denis, Brigitte ULg; Piette, Sylvie-Anne ULg

in Davies, Gordon; Stacey, Elisabeth (Eds.) Quality education @ a distance (2003)

This chapter reports the characteristics of a post graduate diploma on educational technologies based on a combination of face-to-face and distance activities and assesses its quality. We first define the ... [more ▼]

This chapter reports the characteristics of a post graduate diploma on educational technologies based on a combination of face-to-face and distance activities and assesses its quality. We first define the bases of the training program and present several tools (logbook, portfolio and questionnaires) which have been used to evaluate and regulate both training and individual learning process. Our observations indicate an increase and better regulation of the quality of the educational and learning processes. On the basis of the results we achieved, we propose that our original design could be extended to similar adult training programs. The way this innovative system is integrated in the universities shows an evolution due to its success that implies a certain kind of return on investment due to the demand of such kinds of device. [less ▲]

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See detailEffets de la nicotine et du cannabis sur le systeme nerveux central.
Seutin, Vincent ULg

in Revue Médicale de Liège (2003), 58(1), 19-21

We describe the molecular mechanisms of action of nicotine and delta 9-tetrahydrocannabinol, the most potent component of cannabis. Like other drugs of abuse, these compounds enhance dopamine release in a ... [more ▼]

We describe the molecular mechanisms of action of nicotine and delta 9-tetrahydrocannabinol, the most potent component of cannabis. Like other drugs of abuse, these compounds enhance dopamine release in a precise area of the limbic system when administered acutely. It has recently been shown that the cannabinoid receptors on which delta 9-tetrahydrocannabinol acts are also activated by endogenous ligands such as anandamide. This unconventional neurotransmitter appears to have important physiological effects in the central nervous system. Both preclinical and clinical evidence suggests that nicotine is more addictive than delta 9-tetrahydrocannabinol. However, the intimate interactions that exist between cannabinoid and opioid systems within the brain suggest that cannabinoids should not be considered as harmless drugs of abuse. [less ▲]

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See detailAdaptation du K-ABC ; vers une identification des dysharmonies développementales dans la trisomie 21
Frenkel, Stéphanie ULg; Bourdin, Béatrice; Vandromme, Luc

Conference (2003)

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See detailHerpèsvirus des ruminants
Thiry, Etienne ULg

in Lefèvre, P. C.; Blancou, Jean; Chermette, R. (Eds.) Principales maladies infectieuses et parasitaires du bétail, Europe et régions chaudes, généralités, maladies virales (2003)

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See detailEvaluation of false transrectal ultrasonographic pregnancy diagnoses in sheep by measuring the plasma level of pregnancy-associated glycoproteins
Karen, A.; Beckers, Jean-François ULg; Sulon, Joseph ULg et al

in Reproduction Nutrition Development (2003), 43(6, NOV-DEC), 577-586

The present study was undertaken to investigate to what extent pregnancy diagnoses made by transrectal ultrasonography could be confirmed by measurements of plasma concentration of ovine pregnancy ... [more ▼]

The present study was undertaken to investigate to what extent pregnancy diagnoses made by transrectal ultrasonography could be confirmed by measurements of plasma concentration of ovine pregnancy-associated glycoproteins (ovPAG). A total of 424 Awassi x Merino ewes were synchronized for estrus and examined by transrectal ultrasonography. In Experiment 1, the ewes (n = 156) were repeatedly scanned in a standing position on d 29, 36 and 50 of gestation. Similarly, the ewes (n = 268) in Experiment 2 were scanned on d 24, 29 and 34 of gestation, but these ewes were fasted for 12 h prior to the examination and the abdominal wall of each animal was lifted up by the hands of the assistant during the scanning. Blood samples were withdrawn after each transrectal ultrasonographic examination in both experiments. Ovine PAG concentrations were measured in plasma by a heterologous radioimmunoassay and the cut-off value for pregnancy was greater than or equal to 1 ng.mL(-1). Based on the lambing performance, in Experiment 1, altogether 47 false negative and 38 false positive diagnoses were made by transrectal ultrasonography in 24 and 33 ewes, respectively between d 29 and 50 of gestation. In Experiment 2, altogether 8 false negative and 13 false positive diagnoses both were made in 7 ewes between d 24 and 34 of gestation. In both experiments, all ewes with false negative diagnoses had ovPAG concentrations higher than the threshold level for pregnancy diagnosis and all ewes with false positive diagnoses had ovPAG concentrations lower than the threshold of pregnancy. Furthermore, by the PAG-RIA test all lambed or aborted ewes (n = 63) were correctly diagnosed as pregnant and with three exceptions, all non-lambed ewes (n = 361) were correctly diagnosed as non-pregnant during the examined periods of both experiments. [less ▲]

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See detailThymic IGF-2 and central self-tolerance of the insulin family: a basis for the development of a negative vaccine against type 1 diabetes
Geenen, Vincent ULg; Brilot, Fabienne; Hansenne, Isabelle et al

in Diabetologia (2003), 46 (Suppl. 2)

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See detailLes effets de la formation professionnelle continue : une enquête auprès des bénéficiaires des actions du Fonds social européen en Wallonie et à Bruxelles
Conter, Bernard; Maroy, Christian; Orianne, Jean-François ULg

in Politiques d'Education et de Formation : Analyses et Comparaisons Internationales (2003), 7

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