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See detailSynthesis of peptide-modified pyoverdins by a fluorescent Pseudomonas strain grown in isoleucine-supplemented medium
Ongena, MARC ULg; Jacques, Philippe ULg; De Pauw, Edwin ULg et al

in Letters in Peptide Science (2002), 8(1), 21-27

The pattern of pyoverdin-type siderophores produced by Pseudomonas putida BTP16 in iron-limited succinate medium supplemented or not with isoleucine was characterized by electrospray ionization mass ... [more ▼]

The pattern of pyoverdin-type siderophores produced by Pseudomonas putida BTP16 in iron-limited succinate medium supplemented or not with isoleucine was characterized by electrospray ionization mass spectrometry. Two new compounds were observed in culture supernatants from BTP16 grown in the presence of isoleucine. For both molecules, mass differences with pyoverdins originally synthesized by the strain were only interpreted considering the incorporation of Ile into the peptide chain. Further evidence supporting this phenomenon was provided by radioactivity incorporation in pyoverdins produced in the presence of C-14-labeled Ile. Our results are discussed in relation to the non-ribosomal mechanism supposed to be involved in the synthesis of these molecules. [less ▲]

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See detailON THE INFLUENCE OF A NON-LOCAL ELECTRODYNAMICS IN THE IRREVERSIBLE MAGNETIZATION OF NON-MAGNETIC BOROCARBIDES
Silhanek, Alejandro ULg; Civale, L.; Thompson, J.R. et al

in Annett, James F.; Kruchinin, Sergei (Eds.) New Trends in Superconductivity (2002)

We present an overview of the temperature, field and angular dependence of the irreversible magnetization of non-magnetic borocarbides (Y;Lu)Ni2B2C.We show that nonlocal electrodynamics influences pinning ... [more ▼]

We present an overview of the temperature, field and angular dependence of the irreversible magnetization of non-magnetic borocarbides (Y;Lu)Ni2B2C.We show that nonlocal electrodynamics influences pinning via the unusual behavior of the shear modulus in non-hexagonal lattices. On top of that, we observe that the pinning force density Fp exhibits a rich anisotropic behavior that sharply contrasts with its small mass anisotropy. When H⊥c, Fp is much larger and has a quite different H dependence, indicating that other pinning mechanisms are present. [less ▲]

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See detailA qui appartient le ragondin ?
Roussel, Laurence; Mougenot, Catherine ULg

in Espaces et Sociétés (Paris, France) (2002), (110-111), 225-247

La lutte contre le ragondin, espèce importée d'Amérique du Sud en Europe, aujourd'hui classée parmi les espèces invasives, a été inscrite simultanément dans deux législations différentes. Dans le ... [more ▼]

La lutte contre le ragondin, espèce importée d'Amérique du Sud en Europe, aujourd'hui classée parmi les espèces invasives, a été inscrite simultanément dans deux législations différentes. Dans le mondeagricole, c'est une action qui s'inspire de la guerre contre les ravageurs des cultures. Elle s'organise collectivement à l'aide d'un poison, la bromadiolone. Dans le monde de la chasse, elle est principalement du domaine des piégeurs. Solitaires, ceux-ci pourchassent le ragondin en tant qu'espèce nuisible. Cette division est héritée du Moyen Âge, de ses usages de l'espace et des droits qui leur étaient associés (droit de destruction pour les agriculteurs). Actuellement, l'espace rural peut être vu comme une mosaïque, òu ces deux principaux types de lutte coexistent, alors que certains milieux restent libres de toute intervention. Mais ces actions sont aussi l'objet de critiques qui mettent en cause l'utilisation de la bromadiolone et certaines formes de piégeage. Et aujourd'hui, on observe que les modalités de lutte contre le ragondin se combinent aux nouveaux usages de l'espace. [less ▲]

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See detailL'industrie de la pierre et la technologie : entre tradition et innovation
Pirard, Eric ULg

in Vies de pierres : La pierre ornementale en Belgique. Etat de la Question (2002)

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See detailComposite structures optimization using sequential convex programming
Bruyneel, Michaël ULg; Fleury, Claude ULg

in Advances in Engineering Software (2002), 33(7-10), 697-711

The design of composite structures is considered here. The approximation concepts approach is used to solve the optimization problem. The convex approximations of the MMA family are briefly described ... [more ▼]

The design of composite structures is considered here. The approximation concepts approach is used to solve the optimization problem. The convex approximations of the MMA family are briefly described. Several modifications of these approximations are presented. They are now based on gradient information at two successive iterations, avoiding the use of the expensive second-order derivatives. A two-point fitting scheme is also described, where the function value at the preceding design point is used to improve the approximation. Numerical examples compare these new purely non-monotonous schemes to the existing ones for the selection of optimal fibers orientations in laminates. It is shown how these two-point based approximations are well adapted to the problem and can improve the optimization task, leading to reasonable computational efforts. A procedure is also derived for considering simultaneously monotonous and non-monotonous structural behaviors. The resulting generalized approximation scheme is well suited for the optimization of composite structures when both plies thickness and fibers orientations are considered as design variables. It is concluded that the newly developed approximation schemes of the MMA family are reliable for composite structures optimization. All the studied approximations are convex and separable: the optimization problem can then be solved using a dual approach. (C) 2002 Civil-Comp Ltd and Elsevier Science Ltd. All rights reserved. [less ▲]

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See detailMétabolisme des lipides chez la levure: catabolisme peroxysomal des acides gras et applications biotechnologiques
Waché, Y.; Aguedo, Mario ULg; Nicaud, J.M. et al

in Regard sur la Biochimie (2002), 4

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See detailCharacterization of the Metabolism of Osteoarthritic Chondrocytes Cultured in Alginate Beads
Sanchez, Christelle ULg; Mathy, Marianne ULg; Deberg, Michelle ULg et al

in Osteoarthritis and Cartilage (2002), 10(SA), 34

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See detailScalable adaptive hierarchical clustering
Mathy, Laurent ULg; Canonico, R.; Simpson, S. et al

in IEEE Communications Letters (2002), 6(3), 117--119

See detailGénéalogie de la peinture de paysage au XVIe siècle
Allart, Dominique ULg

in Toussaint, Jacques (Ed.) Autour de Henri Bles (2002)

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See detailAnalyse exploratoire de la phase pilote de l'enquête 'Adult literacy and lifeskills survey' : pratiques de formation professionnelle et développement des compétences
Baye, Ariane ULg; Demeuse, Marc ULg; Hindryckx, Geneviève ULg et al

in Capital humain et marchés du travail : perspectives régionales et européennes (2002)

Au-delà du diplôme obtenu, quelles sont les compétences de base des adultes wallons ? Jusqu'ici, et c'était l'un des constats du XIVe congrès des économistes belges de langue française, nous ne disposions ... [more ▼]

Au-delà du diplôme obtenu, quelles sont les compétences de base des adultes wallons ? Jusqu'ici, et c'était l'un des constats du XIVe congrès des économistes belges de langue française, nous ne disposions pas d'outils pour répondre à cette question essentielle pour les décideurs, les observateurs et les acteurs économiques, sociaux et éducatifs. Si elle se confirme, la participation de la Wallonie à l'enquête internationale Adult Literacy and Lifeskills Survey (ALL) permettra d'analyser les liens entre des caractéristiques individuelles et les compétences des Wallons en littératie (compétences en lecture) et en numéracie (compétences en mathématique) ainsi qu'en résolution de problèmes. [less ▲]

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See detailApplication of the Fast Multipole Method to Hybrid Finite Element--Boundary Element Models
V Sabariego, Ruth ULg; Gyselinck, J.; Geuzaine, Christophe ULg et al

in Proceedings of the 2nd international conference on advanced computational methods in engineering, ACOMEN 2002 (2002)

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See detailCrise de l’université nationale ou redéfinition de la production des elites : stratégies et représentations des étudiants de l’Université nationale du Bénin
Poncelet, Marc ULg

in Akam, Noble; Ducasse, Roland (Eds.) Quelle université pour l’Afrique ?, (2002)

Results of a sociological qualitative investigation among students in National university of Benin, West-Africa. The paper underlines the faculties, gender and social inequalities.

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See detailImputation for student non response in Educational survey
Monseur, Christian ULg; Wu, M.

Conference (2002)

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See detailMyoglobinurie atypique: nouveaux cas en Belgique et en France
Delguste, Catherine ULg; Amory, Hélène ULg

in Proceedings of the 19th annual meeting of the Belgian Equine Practitioners Society (BEPS) (2002)

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See detail5-HT1A dysfunction in borderline personality disorder.
Hansenne, Michel ULg; Pitchot, William ULg; Pinto, Emmanuel ULg et al

in Psychological Medicine (2002), 32(5), 935-41

BACKGROUND: A number of challenge studies have reported abnormalities of serotonergic function in borderline personality disorder (BPD). There are, however, problems with the pharmacological probes used ... [more ▼]

BACKGROUND: A number of challenge studies have reported abnormalities of serotonergic function in borderline personality disorder (BPD). There are, however, problems with the pharmacological probes used in these studies since fenfluramine and m-CPP are not only serotonergic agents but also induce release of catecholamines, particularly dopamine. Therefore, we tested whether subjects with BPD showed a blunted prolactin (PRL) response to flesinoxan, a highly potent and selective 5-HT1A agonist. METHODS: Flesinoxan challenge test was carried out in 20 BPD in-patients and 20 healthy controls matched for gender but not for age. Since 16 BPD in-patients exhibited major depressive co-morbidity, a group of 20 depressed in-patients matched for gender but not for age was also included. RESULTS: BPD in-patients exhibited blunted PRL responses as compared to controls, whereas depressed in-patients did not differ from controls. Moreover, PRL responses were lower among BPD in-patients than among depressed in-patients. Among the BPD in-patients, PRL responses to flesinoxan were lower in patients with past history of suicide attempts (N = 8) than in those with a negative history. CONCLUSIONS: The results show major involvement of serotonergic function in BPD and are consistent with previous studies linking lower serotonergic activity with impulsivity. More particularly, our data suggest that BPD is characterized by lower 5-HT1A receptor sensitivity. Moreover, the data support the involvement of 5-HT1A activity in suicidal behaviour. However, this conclusion is limited because other hormonal responses such as ACTH and cortisol were not assessed, and because BPD was assessed by a self-report questionnaire and not a structured clinical interview. [less ▲]

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See detailJustice-Assistance : des accords ou désaccords clairs ?
Maisse, L; Gosset, Christiane ULg; Noirfalise, A et al

Conference (2002)

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See detailInfluence of a water purification unit on the contamination level of salmonella in outcoming water and sludge
Jacob, Benoit; Korsak Koulagenko, Nicolas ULg; Grooven, Bénédicte et al

in Annales de Médecine Vétérinaire (2002), 146(5), 303-310

Foodborne pathogens occasionally harboured in the gastro-intestinal tract of some domestic animals may be retrieved in slaughterhouses waste water and in sludge of water purification units. Salmonella ... [more ▼]

Foodborne pathogens occasionally harboured in the gastro-intestinal tract of some domestic animals may be retrieved in slaughterhouses waste water and in sludge of water purification units. Salmonella, athogen common to man and Animals, is often used as a biological risk indicator. The aim of the present study was to assess effectiveness of a recent water purification unit by rapid and semi-quantitative detection of this micro-organism. The water purification unit collects waste water of seven food-processing industries, including a pig slaughterhouse. This latest was the main source of Salmonella contamination with a level of more 103 colony forming unit (CFU) per ml, that was very close to the average level of contamination of total incoming waste water. The unit, whose principle of action is based on biological purification, has permitted a 4 log10 reduction of Salmonella contamination, with a final contamination level of less than 1 CFU/ml. It was observed only a little decrease of contamination levels during the biological treatment steps, in contrast with the one observed during the clarification step. This was due to adsorption of bacteria by material in suspension. Fresh sludge were harboured an average of 102 CFU of Salmonella per gram. In the beginning of December 1999, two sludge piles were let on the ground along a field and sampled microbiologically every month. Seven month later, no Salmonella were recovered from the piles. 309 [less ▲]

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See detailRespiratory feedback in the generation of emotion
Philippot, P; Chapelle, G; Blairy, Sylvie ULg

in Cognition & Emotion (2002), 15(5), 605-627

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See detailPCDD/F and non-ortho PCB body burden of the general population in Wallonia, Belgium: impact of different sources of environmental pollution
Fierens, S.; Mairesse, Hélène; Focant, Jean-François ULg et al

in Organohalogen Compounds (2002), 55

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