References of "Scientific congresses and symposiums"
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See detailTemps des bailleurs, temps de la gestion communautaire ? Genèse difficile d’une Zone d’Intérêt Cynégétique à Gestion Communautaire dans l’Est Cameroun
Vermeulen, Cédric ULg; Julve Larrubia, C.

in CIRAD (Ed.) Actes de l'Atelier d’échange d’expériences panafricaines sur les approches communautaires de conservation des ressources naturelles, la Tapoa (Niger) Mars 2008 (2008)

De 2002 à 2004 le projet UE « Réseau de partenariat » a étudié la faisabilité de la mise en place d’une Zone d’Intérêt Cynégétique à gestion communautaire (ZICGC) superposée à l’Unité Forestière ... [more ▼]

De 2002 à 2004 le projet UE « Réseau de partenariat » a étudié la faisabilité de la mise en place d’une Zone d’Intérêt Cynégétique à gestion communautaire (ZICGC) superposée à l’Unité Forestière d’Aménagement 10039 au Cameroun, puis a entamé les premières étapes d’information/sensibilisation auprès des communautés locales. Les premières études techniques, relatives au suivi de la pression de chasse ont également été lancées. Techniquement séduisante et novatrice dans son principe, cette initiative a avorté faute de temps, le projet UE financé sur trois années n’ayant pas été prolongé. A l’examen, le manque de pertinence temporelle de cette action est flagrant, la mise en place d’une ZICGC requérant au strict minimum cinq années complètes. Il s’avère que, outre la complexité sociale et technique du concept, ce sont les contraintes de l’appel d’offre UE (niveau de cofinancement notamment) qui ont, dès le départ, conditionné des temps courts dans l’exécution du projet. Ces temps ont ensuite été encore amputés par la mise en place lente des équipes et du matériel sur le terrain, en raison notamment des procédures d’appel d’offre. Il semble donc que les contraintes mises en place par le bailleur de fonds à l’origine pourraient grever l’efficacité immédiate du projet et participent en partie à l’échec de certaines initiatives à fondement social. [less ▲]

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See detailHolocene records of regional dust deposition using peat bogs
Le Roux, G.; De Vleeschouwer, F.; Cheburkin, A. et al

Poster (2008)

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See detailVolatile blends and oxylipins profiles in potato leaves (Solanum tuberosum L.) exposed to insects infestations and mechanical wounding.
Gosset, V.; Göbel, Cornelia; Harmel, N. et al

Conference (2008)

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See detailDetailed 2D flow simulations as an onset for evaluating socio-economic impacts of floods
Dewals, Benjamin ULg; Detrembleur, Sylvain ULg; Archambeau, Pierre ULg et al

in Proceedings of the European Conference on Flood Risk Management - FloodRisk 2008 (2008)

A 2D hydraulic numerical model is presented. It is based on the fully dynamic shallow-water equations, solved by means of a finite volume scheme on multiblock structured grids. The model handles highly ... [more ▼]

A 2D hydraulic numerical model is presented. It is based on the fully dynamic shallow-water equations, solved by means of a finite volume scheme on multiblock structured grids. The model handles highly accurate DSM derived from airborne laser altimetry for the floodplains and sonar detection for the bathymetry of the main channel. The flow simulations are performed with a typical grid spacing of 2m, comparable to the resolution of the DSM and fine enough to represent reliably the flows at the scale of each building. Consequently, the model succeeds in predicting accurately the pattern of flood depth even in densely urbanized floodplains, as confirmed by several validation examples, which also demonstrate the ability of the model to reproduce depth measurements for a wide range of flood discharges without the need for recalibration of the roughness coefficient. Finally, the hydraulic model is exploited as a component of a complete flood risk modelling chain, accounting for socio-economic and ecological impacts of floods and dedicated to the assessment of flood protection measures in the context of climate change. [less ▲]

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See detailPrimary seed dispersal by tamarins into a secondary forest
Culot, Laurence ULg; Muñoz Lazo, Fernando J. J.; Huynen, Marie-Claude ULg et al

in Primate Eye (2008), 96

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See detailOptiVal: Vers de nouveaux outils de gestion pour les éleveurs laitiers wallons, Prédire la réussite à l’insémination
Laloux, Laurent; Bastin, Catherine ULg; Glorieux, Géry et al

in 13ième Carrefour des Productions animales: L'Elevage des ruminants en question: vérités et contre-vérités: Gembloux, le 23 janvier 2008 (2008)

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See detail3D fully coupled multiphase modelling of Ekofisk reservoir
Ringlet, Clémence; Charlier, Robert ULg; Schroeder, Christian ULg et al

in Shao, Jian-Fu; Burlion, Nicolas (Eds.) Thermo-hydromechanical and chemical Coupling in Geomaterials and Applications (2008)

During reservoir production, the depletion usually induces a compaction of the reservoir layers. To enhance oil recovery, waterflooding operations are generally performed but, in the North Sea chalk ... [more ▼]

During reservoir production, the depletion usually induces a compaction of the reservoir layers. To enhance oil recovery, waterflooding operations are generally performed but, in the North Sea chalk reservoir, they have also induced an additional compaction. This latter phenomenon has a positive impact (improve the ‘Compaction drive’ oil recovery) but endangers the offshore platforms and causes huge extra costs. The coupling effects between mechanical behaviour and fluids flow are thus a key issue in petroleum engineering. Pasachalk program I & II have proposed a constitutive model (referred as Pasachalk model), where the suction is the key parameter to explain the water weakening effect. This model has been used for the modelling of waterflooding experiment on chalk plug and bi-dimensional reservoir. However, as the reservoir modelling is actually a 3D model, the purpose of this paper is to present 3D fully coupled modelling of a simplified Ekofisk reservoir during production and waterflooding phases. In order to exhibit the influence of the constitutive mechanical model, different studies are performed: increasing the complexity of the mechanical model (from an elastic model up to the Pasachalk one with suction effect). The numerical results show the influence of the mechanical law on the oil production and exhibit that only an elasto-plastic law with suction effects succeeds to reproduce compactions during both production and waterflooding. [less ▲]

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See detailDevelopment of Procedural Learning in Children : The “Toy Task”
Lejeune, Caroline ULg; Meulemans, Thierry ULg

Poster (2008)

The authors generally agree that procedural learning abilities play an important role in the child development and that they are present early in childhood. However, few studies have been carried out in ... [more ▼]

The authors generally agree that procedural learning abilities play an important role in the child development and that they are present early in childhood. However, few studies have been carried out in this area because of the difficulty to develop tests specifically designed for the evaluation of these capacities in young children. In this study, we presented a new task aimed to evaluate visuo-motor skill learning in the young child. The purpose of the present study was to explore whether procedural learning abilities are present in the same extent in 4-year as 7- and 10-year-old children. Our sample is composed of 60 children divided into 3 age-groups. The task is composed of 5 blocks of 12 trials during which each subject has to use a reversed mouse of a computer in order to “catch” different toys appearing on the screen; 2 blocks of 12 trials was administered after a 15 minutes delay. Our results show an important difference between the groups for the first block; on the other hand, for the next blocks, the results show an absence of age-related difference between participants in our perceptive-motor skill learning task, confirming the idea according to which procedural learning abilities are efficient early in development (the difference observed during the first block being probably due to the intervention of executive mechanisms). [less ▲]

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See detailOrganic-walled microfossils in Mesoarchean shallow-water siliciclastic deposits.
Javaux, Emmanuelle ULg; Marshall, Craig; Bekker, Andrey

Conference (2008)

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See detailNumerical modelling of transient flows with high sediment concentrations
Dewals, Benjamin ULg; Erpicum, Sébastien ULg; Pirotton, Michel ULg

in DE WRACHIEN, D. (Ed.) Monitoring, Simulation, Prevention and Remediation of Dense Debris Flows II (2008)

The main purpose of the present paper is to describe and discuss the development, validation and application of a numerical model designed to handle transient flows with high sediment transport rates. The ... [more ▼]

The main purpose of the present paper is to describe and discuss the development, validation and application of a numerical model designed to handle transient flows with high sediment transport rates. The model considers non-equilibrium transport (i.e. accounting for loading / unloading delay) and is numerically as well as physically totally coupled. The closure relations needed to evaluate the exchange fluxes between the fixed bottom and the flowing mixture (erosion and deposition rates) are also detailed in the paper. Finally, the model is validated against experimental data collected in the framework of the European project IMPACT. [less ▲]

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See detailInvestigation of the geomechanical aspects of a large landslide by means of a finite-element method: a case study
François, Bertrand ULg; Bonnard, Christophe; Laloui, Lyesse

in 12th IACMAG Conference (2008)

Using advanced geomechanical finite element modelling, it has been possible to simulate the mechanical behaviour of a large slope movement, namely the Triesenberg landslide. This slope is located along ... [more ▼]

Using advanced geomechanical finite element modelling, it has been possible to simulate the mechanical behaviour of a large slope movement, namely the Triesenberg landslide. This slope is located along the Rhine valley in the Principality of Liechtenstein, covering an area of around 5 km2 which includes two villages. Pore water pressure fields calculated by a separated hydrogeological model were used as an input for the geomechanical model. The results obtained through 2- and 3-dimension numerical simulations agree fairly well with field measurements of peak velocity, spatial and temporal distribution of velocity and total displacements. Such results were obtained using a Modified Cam-Clay elasto-plastic constitutive model. In addition, a parametric study has been carried out to evaluate the effect of the selected friction angle and of the range of water pressure variation on the movements during a crisis period. [less ▲]

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See detailEvaluation de la condition physique chez le cheval d’endurance : comparaison d’un test de terrain adapté et d’un test sur tapis roulant
Fraipont, Audrey ULg; Van Erck, Emmanuelle; Toussaint, Marie et al

in 36èmes Journées AVEF (2008)

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See detailAperture imaging beyond the classical resolution limit by using incoherent photons
Thiel, C.; Bastin, Thierry ULg; von Zanthier et al

Conference (2008)

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See detailAnalysis of perforated magnetic shields for electric power applications
Sergeant, Peter; V Sabariego, Ruth ULg; Crevecoeur, Guillaume et al

in Proceedings of the 13th Biennial IEEE Conference on Electromagnetic Field Computation (CEFC2008) (2008)

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See detailFuzzy partition optimization for approximate fuzzy Q-iteration
Busoniu, Lucian; Ernst, Damien ULg; Babuska, Robert et al

in Proceedings of the 17th IFAC World Congress (IFAC-08) (2008)

Reinforcement learning (RL) is a widely used learning paradigm for adaptive agents. Because exact RL can only be applied to very simple problems, approximate algorithms are usually necessary in practice ... [more ▼]

Reinforcement learning (RL) is a widely used learning paradigm for adaptive agents. Because exact RL can only be applied to very simple problems, approximate algorithms are usually necessary in practice. Many algorithms for approximate RL rely on basis-function representations of the value function (or of the Q-function). Designing a good set of basis functions without any prior knowledge of the value function (or of the Q-function) can be a difficult task. In this paper, we propose instead a technique to optimize the shape of a constant number of basis functions for the approximate, fuzzy Q-iteration algorithm. In contrast to other approaches to adapt basis functions for RL, our optimization criterion measures the actual performance of the computed policies in the task, using simulation from a representative set of initial states. A complete algorithm, using cross-entropy optimization of triangular fuzzy membership functions, is given and applied to the car-on-the-hill example. [less ▲]

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See detailConsideration of nonlinear creep strain of siliceous concrete on calculation of mechanical strain under transient temperatures as a function of load history
Schneider, U.; Schneider, M.; Franssen, Jean-Marc ULg

in Kodur, Venkatesh; Tan, Kang Hai (Eds.) Proceedings of the Fifth International Conference Structures in Fire (2008)

The paper is given of an extended model for concrete in compression at elevated temperature that incorporates elastic, plastic and creep strain as a function of temperature and stress history. The ... [more ▼]

The paper is given of an extended model for concrete in compression at elevated temperature that incorporates elastic, plastic and creep strain as a function of temperature and stress history. The mechanical strain calculated as a function of elastic strain, plastic strain and thermal induced strain. The thermal induced strain is relative independent compared to dependence of Young’s Modulus by load history. Actually the term comprises elastic, plastic and (pure) transient creep strains as we will show. A comparison is given between experimental results with cylindrical specimens and calculated results. [less ▲]

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See detailThe Mehler reaction in Chlamydomonas during photosynthetic induction and steady-state photosynthesis in wild-type and in a mitochondrial mutant
Franck, Fabrice ULg; Houyoux, Pierre-Alain

in Allen, J. F.; Gantt, E.; Golbeck, J. H. (Eds.) et al Photosynthesis: Energy from the Sun (2008)

The effects of fast O2-removal on electron transport rate (ETR), measured by chlorophyll fluorescence, were investigated in C. reinhardtii. In wild-type, O2-removal caused a strong decrease in ETR during ... [more ▼]

The effects of fast O2-removal on electron transport rate (ETR), measured by chlorophyll fluorescence, were investigated in C. reinhardtii. In wild-type, O2-removal caused a strong decrease in ETR during photosynthetic induction due to the absence of Mehler reaction. Light-saturation curves of the O2-dependent electron flow were established in different conditions. O2-dependent electron flow was triggered within a few seconds and amounted to up to 80 % of total electron flow during photosynthetic induction in algae grown on minimal medium, while it represented less than 15 % at steady-state. It was significantly weaker in the presence of acetate and in a mutant devoided of mitochondrial complexes I and III. Measurements of the light-induced changes of 820nm transmission in the s time-range show that in wild-type the O2-dependent electron flow leads to complete re-oxidation of PSI donor side in saturating light. [less ▲]

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See detailSecond sound and shock waves in rigid crystals: an extended thermodynamic analysis
Lebon, Georgy ULg; Dauby, Pierre ULg; Desaive, Thomas ULg et al

in Proceedings of CHT-08 ICHMT International Symposium on Advances in Computational Heat Transfer (2008)

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See detailThe economic, social and ecologic impact of the tourism in the Vatra Dornei area
Petrescu, Iustinian; Burny, Philippe ULg

in Bran, Florina; Radulescu, Carmen Valentina; Ioan, Ildiko (Eds.) et al International Conference "Ecological Performance in a Competitive Economy", Bucharest 20-21 November 2008 : proceedings, volume II (2008)

The tourism can hold a decisional role in the development of an area that does not have access to remarkable economic resources and has the capacity to contribute decisively to the exploitation of ... [more ▼]

The tourism can hold a decisional role in the development of an area that does not have access to remarkable economic resources and has the capacity to contribute decisively to the exploitation of specific natural and antropic resources (mineral water, sediment, proper areals for sport or recreative activities, etc.) wich atract the touristic fluxes and lead to the apparition and development of the locality as a trousitic resort. In this context, the work aims to highlight the contribution and impact of the touristic activities to the socio-économic development of the Vatrea Dornei area [less ▲]

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See detailFollow-up of Coll2-1, Coll2-1 NO2 and myeloperoxidase in dog after transection of the cruciate ligament of the knee
Henrotin, Yves ULg; Pelletier, JP; Martel-Pelletier, J et al

in Annals of the Rheumatic Diseases (2008), 67(Suppl.2), 593

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See detailContribution de l’inactivation épigénétique des gènes BRCA1 et BRCA2 dans les cancers du sein sporadiques en Tunisie
Trimeche, Mounir; Ziadi, Sonia; Hachana, Mohamed Ridha ULg et al

in Bulletin du Cancer (2008)

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See detailMathematical modeling of fracture healing: coupling between mechanics, angiogenesis and osteogenesis
Geris, Liesbet ULg; Vander Sloten, Jos; VanOosterwyck, Hans

in IFMBE Proceedings 22 (2008)

Both mechanical and biological factors play an important role in normal as well as impaired fracture healing. This study aims to provide a mathematical framework in which both regulatory mechanisms are ... [more ▼]

Both mechanical and biological factors play an important role in normal as well as impaired fracture healing. This study aims to provide a mathematical framework in which both regulatory mechanisms are included and angiogenesis is explicitly incorporated. To illustrate the added value of such a framework, a coupled mechanobioregulatory model was proposed. This model was based on a previously developed bioregulatory model [1], using a simple coupling between mechanics and biology whereby certain parameters of the bioregulatory model were made dependent on local mechanical stimuli. As a first example, in this study, the proliferation of osteoblasts and endothelial cells were made dependent on the local fluid flow [2]. Various loading situations, ranging from non-loading to overloading, were simulated. Simulations of adverse mechanical circumstances predicted the formation of avascular nonunions, a result that was corroborated by various experimental observations. This model allows testing various hypotheses concerning the nature of the mechanical stimulus influencing the healing process, as well as the most important cellular processes influenced by mechanical loading. It is one of the first models that provides an explicit coupling between mechanical and angiogenic factors. As both factors have been identified to play a key role in the occurrence of delayed and nonunions, the model allows to further explore their etiology and treatment. [less ▲]

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See detailA mathematical model of bone regeneration including angiogenesis: relevance for tissue engineering strategies
Van Oosterwyck, Hans; Vander Sloten, Jos; Geris, Liesbet ULg

in European Cells and Materials (2008), Vol. 14(Suppl. 1,), 29

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See detailMathematical modelling of bone regeneration including angiogenesis: design of treatment strategies for atrophic non-unions
Geris, Liesbet ULg; Vander Sloten, Jos; Van Oosterwyck, Hans

in Proceedings of the 54th Annual Meeting of the Orthopaedic Research Society (2008)

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See detailIdentification and characterization of new blood-accessible colorectal cancer biomarkers
Conrotto, Paolo; Roesli, Christoph; Rybak, J. et al

Conference (2008)

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See detailLes hyperconflits en organisation
Faulx, Daniel ULg; Delvaux, Sophie

in Actes du 15ème Congrès de Psychologie du Travail et des Organisation de Langue Française. CD-rom. Québec.. (2008)

La description et la compréhension des conflits extrêmes ou « hyperconflits » constituent de nouvelles préoccupations en Psychologie du Travail et des Organisations. A partir de l’analyse des résultats de ... [more ▼]

La description et la compréhension des conflits extrêmes ou « hyperconflits » constituent de nouvelles préoccupations en Psychologie du Travail et des Organisations. A partir de l’analyse des résultats de huit focus groups composés de professionnels du traitement des conflits, nous dégageons 24 indicateurs des hyperconflits. Plus généralement, il ressort de notre étude que ces situations sont liées à une réduction de la complexité du système organisationnel couplée à une généralisation de la dynamique conflictuelle du point de vue de l’espace-temps, des processus et des conséquences. Les implications en termes d’interventions sont également discutées. [less ▲]

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See detailComment diviser huit en trois parts égales ? De l'anecdote au récit à énigme dans la tradition arabe
Bauden, Frédéric ULg

in Bauden, Frédéric; Chraïbi, Aboubakr; Ghersetti, Antonella (Eds.) Le Répertoire narratif arabe médiéval: transmission et ouverture. Actes du colloque international (Université de Liège, 15-17 septembre 2005) (2008)

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See detailSpécificités et contraintes de la mesure des odeurs dans l'environnement par réseaux de capteurs
Nicolas, Jacques ULg

Conference (2008)

L'estimation de la nuisance olfactive dans l'environnement est une tâche rendue particulièrement difficile par la multiplicité des sources, leur grande variabilité, leur caractère parfois très diffus et ... [more ▼]

L'estimation de la nuisance olfactive dans l'environnement est une tâche rendue particulièrement difficile par la multiplicité des sources, leur grande variabilité, leur caractère parfois très diffus et fugitif et surtout par la subjectivité de l'appréciation de la gêne. Aussi faut-il mettre en œuvre plusieurs méthodes complémentaires qui vont de l'analyse chimique (GCMS) aux enquêtes de riverains, en passant par l'olfactométrie dynamique impliquant un panel de personnes reniflant différentes dilutions d'un échantillon prélevé sur le terrain. Or, aucune de ces méthodes ne permet un suivi continu des odeurs qui viserait, par exemple, à détecter l'émergence d'une émission particulière dans une ambiance. A ce niveau, la technologie des nez électroniques semble très prometteuse et particulièrement attractive. Basée sur la réponse globale d'un réseau de capteurs non spécifiques, elle permet non seulement d'identifier qualitativement une source particulière, mais également de la suivre en continu. L'unité "Surveillance de l'Environnement" de l'ULg applique cette technique pour suivre les odeurs en périphérie de sites émetteurs et notamment un centre de compostage. Les appareils développés sont basés sur des capteurs commerciaux à oxydes métalliques. La méthode exige une calibration préalable afin de créer et de valider le modèle de reconnaissance et la loi qui relie les signaux des capteurs à une variable quantitative comme la concentration d'odeur. Bien que testée avec succès autour d'installations en vraie grandeur, la technique des "nez électroniques" reste soumise à de nombreuses limitations et contraintes. Parmi ces contraintes, il faut citer la dérive des capteurs, l'influence de l'humidité et de la température, la difficulté de trouver un gaz étalon représentatif des odeurs environnementales ou encore celle de calculer un indicateur global qui serait l'image "électronique" de la nuisance olfactive. En général, la méthode du nez électronique peut être envisagée pour le suivi d'odeurs ponctuelles à la source, par exemple dans un hall de compostage ou dans un bâtiment d'élevage, pour autant que l'ambiance ne soit pas trop agressive. L'unité de recherche teste actuellement le principe de réseaux de nez électroniques placés tout autour d'un site. En ajoutant l'information en provenance d'une station météorologique, un tel système permet la prédiction en temps réel de zones de nuisance olfactive dans l'environnement. Cependant, dès que l'on s'éloigne de l'émission et que l'on s'intéresse à la mesure de l'ambiance olfactive à proximité des habitations des riverains, la technique des nez électroniques présente une limitation sévère due au seuil de détection des capteurs. En effet, le nez humain est parfois sensible à de très faibles concentrations de composés volatils qui ne sont pas détectées par les capteurs. Il devient alors indispensable de piéger ces composés dans des dispositifs de pré-concentration en ligne. De tels dispositifs, actuellement en développement, autoriseraient un élargissement du champ d'application des nez électroniques, notamment vers le domaine très vaste de l'environnement intérieur. [less ▲]

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See detailImprovements of image processing for wheat ear counting
Cointault, Frédéric; Journaux, Ludovic; Miteran, Joel et al

in Agricultural and biosystems engineering for a sustainable world (2008)

One of the most important activity of agricultural research insititutes concerns the agronomical experiments done under different conditions needing many land observations and valuations to quantify ... [more ▼]

One of the most important activity of agricultural research insititutes concerns the agronomical experiments done under different conditions needing many land observations and valuations to quantify several variables. These observations, although generally accurate, are visually done by the agriculturist technicians and present numerous drawbacks: penibility, weak productivity, numerous labor force, limited sampling … Two feasibility studies lead in our laboratory recently have shown that some of the previous observations, and particularly the counting of the number of wheat ear per m², can be done by color and/or texture image processing for images taken directly in the field with a specific acquisition system. This paper describes the improvements of the previous studies concerning the image acquisition system, and especially the illumination control, and the justification of different hypothesis on the number of classes to detect in an image. The use of a cluster validity index has allowed to prove that 3 classes to determine all the objects in a wheat ear image are not sufficient. A correlation with a study based on the size of the analysis window is currently under investigation to improve the ear detection, which is now of 6%, compared to manual counting done by agriculturist technicians. [less ▲]

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See detailPCDD, PCDF AND PCB DETERMINATION IN DOLPHINS REVEALS A WORLD HOTSPOT FOR PCBS IN GUANABARA BAY, BRAZIL
Dorneles, Paulo; Lailson-Brito, José; Eppe, Gauthier ULg et al

in Organohalogen Compounds (2008), 70

The main objective of the present study was to determine the current concentrations of PCDDs, PCDFs and PCBs in dolphins from a region of high industrialization and urbanization in the Southern Hemisphere ... [more ▼]

The main objective of the present study was to determine the current concentrations of PCDDs, PCDFs and PCBs in dolphins from a region of high industrialization and urbanization in the Southern Hemisphere. Since most of these compounds biomagnify in food chains and changes in ratios of stable isotopes of nitrogen (15N/14N) have been used to elucidate trophic relationships 7, measurements of these isotopes have been carried out in marine tucuxi dolphins and their prey in Guanabara Bay. Stable isotopes were measured, firstly, to quantitatively assess the trophic level of the dolphin, and, secondly, to provide information for future human risk assessment investigations related to fish consumption [less ▲]

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See detailRecognition of homopyrimidine mismatches by distance-constrained macrocyclic bisintercalators
Bahr, Matthias; Gabelica, Valérie ULg; Granzhan, Anton et al

in Nucleic Acids Symposium Series (2008), 52

Binding of three macrocyclic bisintercalators to mismatch-containing duplexes was analyzed by thermal denaturation experiments, electrospray mass spectrometry studies (ESI-MS) and fluorescent intercalator ... [more ▼]

Binding of three macrocyclic bisintercalators to mismatch-containing duplexes was analyzed by thermal denaturation experiments, electrospray mass spectrometry studies (ESI-MS) and fluorescent intercalator displacement (FID) titrations. The macrocyclic bisintercalators bind to duplexes containing mismatched thymine bases with high selectivity over the fully matched one and affinity in the submicromolar range (Kd). The FID results also demonstrate that the macrocyclic naphthalene derivative BisNP preferentially binds to pyrimidine-pyrimidine mismatches compared to all other possible base mismatches. This ligand also efficiently competes with a DNA enzyme (M.TaqI) for binding to a duplex with a TT-mismatch [less ▲]

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See detailWhat muscle performance assessment in high level young soccer players ?
Delvaux, François ULg; Herrbach, Nicolas; Namurois, Guy et al

in Abstract book du Premier Congrès Olympique Belge de Médecine et des Sciences du Sport (2008)

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See detailL’Imaginaire des Pays-Bas au XIXe siècle. Regards croisés français et allemands
Andringa, Kim ULg

in L'Idée et le texte (2008)

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See detailLes mises en situation dans le cadre de la sélection du personnel et la gestion des carrières
Bertrand, Françoise ULg; Hansez, Isabelle ULg

in Salengros, P.; Kridis, N.; Lemoine, C. (Eds.) et al Valeurs du travail, normativité et recrutement. Actes du 14ème congrès de Psychologie du Travail et des Organisations de Langue Française (2008)

Notre objectif est de présenter une méthodologie rigoureuse pouvant répondre aux besoins de sélection et d’évaluation du personnel. Pour illustrer cette approche, deux contextes différents seront décrits ... [more ▼]

Notre objectif est de présenter une méthodologie rigoureuse pouvant répondre aux besoins de sélection et d’évaluation du personnel. Pour illustrer cette approche, deux contextes différents seront décrits : la création d’épreuves dans le cadre de la sélection et la création d’épreuves d’accession dans le cadre de la gestion des carrières. Ces épreuves sont constituées de mises en situation individuelles écrites ou de mises en situation collectives. L’identification des compétences à évaluer, la création des épreuves et leur validation sont les trois étapes méthodologiques qui seront exposées dans ce document. [less ▲]

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See detailAttenuation and scatter correction accuracy of the microPET Focus 120 assessed with the NEMA NU-4 2008 phantom.
Bahri, Mohamed Ali ULg; Plenevaux, Alain ULg; Seret, Alain ULg

in European Journal of Nuclear Medicine and Molecular Imaging (2008), 35(S2), 193

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See detailFast mapping between grammatical constructions and meaning Two experiments in French children aged 3 to 4
Maillart, Christelle ULg; Parisse, Christophe; Dupont, Fanny et al

Poster (2008)

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See detailAn International, Collaborative Study of the Disease Characteristics and Response to Therapy in 60 Pituitary Adenoma Patients with Aryl Hydrocarbon Receptor Interacting Protein (AIP) Gene Mutations
Daly, Adrian ULg; Tichomirowa, M. A.; Ebeling, T. M. L. et al

in ENDO 2008: 90th Annual Meeting of the Endocrine Society - Abstract book (2008)

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See detailLes pouvoirs locaux et le droit dérivé des marchés publics
Durviaux, Ann-Lawrence ULg

in Les pouvoirs locaux et le droit communautaire (2008)

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See detailOptimizing active avoidance conditioning for high-throughput behavioral and cognitive screening in fish. Proceedings of Measuring behaviour
Ylieff, Marc ULg; Ferrara, André ULg; Fagniart, C. et al

in A.J. Spink et al. (Ed.) Proceedings of Measuring Behaviour (2008)

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See detailDix ans d’isocinétisme et lésions musculaires.
Croisier, Jean-Louis ULg; Crielaard, Jean-Michel ULg; Forthomme, Bénédicte ULg

in Abstract book des 10èmes Rencontres de Médimex (2008)

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See detailBehavioral effects of acetaldehyde in mice and rats: From reinforcement to amnesia
Quertemont, Etienne ULg; Didone, Vincent ULg; Closon, Catherine ULg

in Alcoholism, Clinical & Experimental Research (2008), 32(6), 289-289

Whereas human studies keep reporting evidence that acetaldehyde accumulation prevents alcohol drinking and alcoholism, animal studies support a rewarding rather than aversive role for acetaldehyde. In ... [more ▼]

Whereas human studies keep reporting evidence that acetaldehyde accumulation prevents alcohol drinking and alcoholism, animal studies support a rewarding rather than aversive role for acetaldehyde. In recent years, the reinforcing properties of acetaldehyde were demonstrated in various rodent strains and using different experimental methods. These results led to the hypothesis that acetaldehyde might be involved in the addictive properties of alcohol. In addition to its possible role in the reinforcing properties of alcohol, there is also evidence that acetaldehyde is involved in many other behavioral effects of ethanol. Using various behavioral procedures with both mice and rats, we have studied the behavioral effects of direct acetaldehyde injections. Additionally, in independent experiments we have compared the effects of ethanol in mice with or without a pre-treatment with the aldehyde dehydrogenase inhibitor cyanamide, which produces acetaldehyde accumulation. The results of these studies show that acetaldehyde produces a wide spectrum of behavioral effects, including reinforcement, aversion, sedation, ataxia and amnesia. These effects were mainly dependent upon acetaldehyde doses, with some of them showing an inverted U shape dose-response curve. These results also suggest that acetaldehyde might mediate or contribute to many of the behavioral effects of ethanol and especially to alcohol abuse and alcoholism. [less ▲]

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See detailModel-based diagnosis of acute pulmonary embolism - results from a porcine model
Desaive, Thomas ULg; Ghuysen, Alexandre ULg; Kolh, Philippe ULg et al

in Intensive Care Medicine (2008), 34(suppl. 1), 78

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See detailRecent climatic instability in Poland and effect of Little Ice Age on human activities
De Vleeschouwer, F.; Lamentovicz, M.; Piotrowska, N. et al

Poster (2008)

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See detailNumerical Simulation of a Scroll Expander for Use in a Rankine Cycle
Lemort, Vincent ULg; Quoilin, Sylvain ULg; Lebrun, Jean ULg

(2008)

This paper presents two simulation models of scroll expanders for use in heat recovery Rankine cycle applications: a detailed reference model and a simplified model. The reference model associates a ... [more ▼]

This paper presents two simulation models of scroll expanders for use in heat recovery Rankine cycle applications: a detailed reference model and a simplified model. The reference model associates a detailed geometrical description of the expander to a thermodynamic modeling of the expansion process in the machine. Due to large computational effort, the reference model is not appropriate for simulation of the entire Rankine cycle system. The paper shows how a simplified model can be built from the reference model. This model involves a limited number of parameters, which describe the main features of the machine. An experimental study is carried out on a prototype of Rankine cycle working with HCFC-123. Based on detailed measurements, the validation of both models is conducted. It is found that both models are able to predict the mass flow rate, the delivered shaft power and the discharge temperature with a good accuracy. [less ▲]

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See detailComparative study of analytical formulae for the fire resistance of steel beam-columns
Talamona, D.; Castagne, S.; Lopes, N. et al

in Kodur; Tan (Eds.) Proceedings of the Fifth International Conference Structures in Fire (2008)

This paper investigates the difference between the buckling formulae published in the Eurocode 3 part 1.2 and the recommendations made in the final report of the Buckling Curves in Case of Fire (BCCF ... [more ▼]

This paper investigates the difference between the buckling formulae published in the Eurocode 3 part 1.2 and the recommendations made in the final report of the Buckling Curves in Case of Fire (BCCF) research project. This study compares the critical temperatures obtained with both formulations to assess the impact on the fire endurance of steel columns subjected to axial compression and bending. An extensive comparison of the ultimate temperatures obtained with both formulations has been performed (382 profiles, buckling about the strong and weak axis, 12 column lengths, 6 M/N ratios and uniform and triangular bending moment distributions). Failure temperatures between 400°C and 860°C have been considered. The formulations are also compared with Finite Elements (F.E.) calculations performed for a S235 HEA 200 at 600ºC. This analysis shows that for buckling about the strong axis the BCCF method is better than the EC3 but for buckling about the weak axis the EC3 predicts failure temperatures closer to the F.E. model than the BCCF formulation. Finally, the ultimate temperatures predicted by the two formulations have also been compared with experimental results from the database SCOFIDAT. This comparison shows that there is no major difference between the two formulations for small and large bending moments. This study concludes that the EC3 and BCCF formulations are generally equivalent and that either formulation can be used. [less ▲]

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See detailJacques Derrida et l'analyse spectrale de l'oeuvre d'art
Steinmetz, Rudy ULg

Conference (2008)

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See detailInvestigation on retained delta ferrite occurrence and its influence on HSS and Semi HSS Strengthening after thermomecanical routes
Tchuindjang, Jérôme Tchoufack ULg; Lecomte-Beckers, Jacqueline ULg

in Proceedings of Abrasion 2008 (2008)

The present work deals with use of DTA tests in order to understand the crystallisation behaviour of semi-HSS and HSS alloys, and to enhance their solid state transformations. Emphasis is laid on the ... [more ▼]

The present work deals with use of DTA tests in order to understand the crystallisation behaviour of semi-HSS and HSS alloys, and to enhance their solid state transformations. Emphasis is laid on the decomposition of the unexpected retained delta ferrite during thermal and thermomechanical treatment. [less ▲]

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See detailParameter estimation in kinetic reaction models using nonlinear observers is facilitated by model extensions
Fey, Dirk ULg; Findeisen, Rolf; Bullinger, Eric ULg

in 17th IFAC World Congress, Seoul, Korea (2008)

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See detailFinite element modelling of thermo-elasto-plastic water saturated porous materials
Luison, Loris; François, Bertrand ULg; Bortolotto, Roberto et al

Poster (2008)

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See detailCocaïne and metabolites in waste and surface water across Belgium - a monitoring study
Van Nuijs, Alexander; Pecceu, Bert; Gheorghe, A. et al

Poster (2008)

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See detailLNCaP prostate cancer imaging with biologically functionalized gold nanoparticles in 2D and 3D cell culture
Schol, Daureen ULg; Fleron, Maximilien ULg; Greisch, Jean - François et al

in Anticancer Research (2008), 28

One of the main objectives of this project is to realize and validate a versatile lab system composed of functionalized nanoparticles for diagnosis of different superficial and accessible cancers, e.g ... [more ▼]

One of the main objectives of this project is to realize and validate a versatile lab system composed of functionalized nanoparticles for diagnosis of different superficial and accessible cancers, e.g. prostate cancer. Gold nanorods have been synthesized and functionalized with antibodies targeting specific antigens on cancer cell lines. [less ▲]

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See detailMicrolensing to probe the quasar structure: spectrophotometry of Q2237+0305 and of J1131-1231
Sluse, Dominique ULg; Eigenbrod, A.; Courbin, F. et al

in Kerins, E.; Mao, S.; Rattenbury, N. (Eds.) et al Proceedings of the Manchester Microlensing Conference: The 12th International Conference and ANGLES Microlensing Workshop. Proceedings of Science, PoS (GMC8)020 (2008)

We present the main results of the first long-term spectrophotometric monitoring of the ``Einstein cross'' Q2237+0305 and of the single-epoch spectra of the lensed quasar J1131-1231. From October 2004 to ... [more ▼]

We present the main results of the first long-term spectrophotometric monitoring of the ``Einstein cross'' Q2237+0305 and of the single-epoch spectra of the lensed quasar J1131-1231. From October 2004 to December 2006, we find that two prominent microlensing events affect images A & B in Q2237+0305 while images C & D remain grossly unaffected by microlensing on a time scale of a few months. Microlensing in A & B goes with chromatic variations of the quasar continuum. We observe stronger micro-amplification in the blue than in the red part of the spectrum, as expected for continuum emission arising from a standard accretion disk. Microlensing induced variations of the CIII] emission are observed both in the integrated line intensity and profile. Finally, we also find that images C & D are about 0.1-0.3 mag redder than images A & B. The spectra of images A-B-C in J1131-1231 reveal that, in April 2003, microlensing was at work in images A and C. We find that microlensing de-amplifies the continuum emission and the Broad Line Region (BLR) in these images. Contrary to the case of Q2237+0305, we do not find evidence for chromatic microlensing of the continuum emission. On the other hand, we observe that the Balmer and MgII broad line profiles are deformed by microlensing. These deformations imply an anti-correlation between the width of the emission line and the size of the corresponding emitting region. Finally, the differential microlensing of the FeII emission suggests that the bulk of FeII is emitted in the outer parts of the BLR while another fraction of FeII is produced in a compact region. [less ▲]

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See detailModelling the Fringing of the FORS2 CCD
Walsh, J. R.; Kuntschner, H.; Jehin, Emmanuel ULg et al

in Kaufer, A. (Ed.) The 2007 ESO Instrument Calibration Workshop (2008)

Thinned CCD detectors display fringing which arises from the interference of multiply reflected light in the layers of the CCD. If the layer construction - the thicknesses and refractive indexes of the ... [more ▼]

Thinned CCD detectors display fringing which arises from the interference of multiply reflected light in the layers of the CCD. If the layer construction - the thicknesses and refractive indexes of the layers - is known, then the observed fringing can be accurately modelled and used to correct imaging and spectroscopic data for its effects. In practice the specifications on the actual deposited layer thicknesses may not be known to sufficient accuracy to predict the fringe behaviour. Thus calibration data, in the form of monochromatic flat fields, is required and can be modelled using the technique outlined by Malamuth et al. 2003, which has been applied to ACS CCDs. [less ▲]

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See detailHolocene instabilities in GIN sea overflows based on mineralogical and Nd/Pb isotopic sedimentary records
Simon, Q.; Fagel, Nathalie ULg; Jennings, A. et al

Poster (2008)

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See detailClinical and functional responses to inhaled albuterol, ipratropium bromide and combination of both in ascaris suum-sensitized cats with allergen-induced bronchospasm
Leemans, Jérôme ULg; Kirschvink, N.; Cambier, Carole ULg et al

in Proceedings: 26th Annual Symposium of the Veterinary and Comparative Respiratory Society (2008)

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See detailCooperative Digital Studio IT-supported cooperation for AEC students
Kubicki, S.; Bignon, J.-C.; Leclercq, Pierre ULg

in Rishmoller, L. (Ed.) Improving the Management of Construction Projects through IT Adoption (2008)

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See detailEmpirical Mode Decomposition in the Reduced-Order Modeling of Aeroelastic Systems
Lee, Young S; McFarland, D. Michael; Vakakis, Alexander F. et al

in 49th AIAA Structural Dynamics and Materials Conference, Shaumberg, 2008 (2008)

A relationship between IntrinsicMode Functions (IMFs), derived from the Empirical Mode Decomposition (EMD), and the slow-flow model of a nonlinear dynamical system has been exploited in the development of ... [more ▼]

A relationship between IntrinsicMode Functions (IMFs), derived from the Empirical Mode Decomposition (EMD), and the slow-flow model of a nonlinear dynamical system has been exploited in the development of the Slow Flow Model Identification (SFMI) method for strongly nonlinear systems, in which the physical parameters of such systems are identified from experimental data. Both the slow flows and IMFs provide the means to expand a general multicomponent signal in terms of a series of simpler, dominant, monocomponent signals. The slow flows are obtained analytically, for example through application of the method of complexification and averaging (CxA), which transforms the equations of motion into a set of approximate equations in amplitude and phase for each modeled frequency component. In contrast, the EMD characterizes a signal through the envelope and phase of its elemental components, the IMFs. Thus, between nonlinear transitions, the equations derived using the CxA method govern the amplitude and phase of the modeled IMFs. Application of SFMI has, until now, been limited to low-dimensional systems subjected to impulsive excitation. Herein, the method is extended to identification of a planar rigid airfoil [less ▲]

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See detailGround-based CO observations at the Jungfraujoch: Comparison between FTIR and NDIR measurements
Dils, Bart; Mahieu, Emmanuel ULg; Demoulin, Philippe ULg et al

in Geophysical Research Abstracts (2008), 10

Measurements of CO have been performed at the Swiss Alpine Jungfraujoch station (46.5º N, 8.0° E, 3580m a.s.l.) on a regular basis since the mid-1980’s, using Fourier Transform Infrared solar absorption ... [more ▼]

Measurements of CO have been performed at the Swiss Alpine Jungfraujoch station (46.5º N, 8.0° E, 3580m a.s.l.) on a regular basis since the mid-1980’s, using Fourier Transform Infrared solar absorption spectrometry (FTIR), and since 1996 using an in situ Nondispersive Infrared technique (NDIR). While the in situ measurements detect local CO concentrations at the site, the FTIR technique provides integrated measurements along the line-of-sight. Nevertheless, the pressure broadening of the spectral absorption lines recorded at high resolution enables retrieving information on the vertical distribution of CO, mainly in the troposphere, including its concentration near the surface. Considering the inherent capabilities of the two independent measurement techniques, substantial differences between both data sets for surface level CO could potentially arise. Here we present a comparison of both data sets for the 1997 -2004 time period. Both data sets have been analysed by using successive Kolmogorov-Zurbenko filters. It appears that the long-term trend over the given time period is significantly different for both datasets. Possible causes for this difference will be critically discussed. [less ▲]

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See detailAnti-inflammatory properties of stigmasterol in cartilage: new insights
Gabay, Odile; Sanchez, Christelle ULg; Chevy, F. et al

in Osteoarthritis and Cartilage (2008), 16(Suppl 4), 79

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See detailNew pyridinic analogues of nimesulide as potent COXs inhibitors.
Renard, Jean-François ULg; Garbacki, Nancy ULg; de Leval, Xavier et al

Poster (2008)

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See detailLe stress oxydant est modifié en fonction du statut clinique chez les trotteurs à l’entraînement
Van Erck, Emmanuelle; Lekeux, Pierre ULg; Kirschvink, N.

in 36èmes Journées AVEF (2008)

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See detailLes papyrus iatromagiques grecs et la région thébaine
de Haro Sanchez, Magali ULg

in Delattre, Alain (Ed.) « Et maintenant ce ne sont plus que des villages … »: Thèbes et sa région aux époques hellénistique, romaine et byzantine. Actes du colloque tenu à Bruxelles les 2 et 3 décembre 2005 (2008)

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See detailHigh-resolution clutter-power estimation for range-dependence compensation in conformal-array STAP
Ries, Philippe; Lapierre, Fabian D.; Lesturgie, Marc et al

Conference (2008)

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See detailReproduction Performances and Risk Factors in dairy and beef cattle in Belgium.
Hanzen, Christian ULg; Theron, Léonard ULg; Sterkendries, José et al

in Proceedings of the XXVth World Buiatric Congress. (2008)

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See detailA short C-rich PNA fragment capable to form novel G-quadruplex-PNA complexes
Amato, Jussara; Gabelica, Valérie ULg; Borbone, Nicola et al

in Nucleic Acids Symposium Series (2008), 52

In this work we investigated the interaction between the short ac(4)a C-rich peptide nucleic acid (PNA) probe and two intramolecular G-quadruplex targets having the same G-tetrad core, but different ... [more ▼]

In this work we investigated the interaction between the short ac(4)a C-rich peptide nucleic acid (PNA) probe and two intramolecular G-quadruplex targets having the same G-tetrad core, but different folding topologies. The T(G(4)T)(3)G(4)T and the recently reported tetra-end-linked-(TG(4)T)(4) G-rich oligonucleotides (GROs) were chosen and synthesized for this study. UV, CD, and MS experiments revealed the formation of novel 1:1 G-quadruplex-PNA complexes besides the expected DNA-PNA heteroduplexes [less ▲]

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See detailComputation of Nonlinear Normal Modes using Numerical Continuation Techniques
Peeters, Maxime ULg; Viguié, Régis ULg; Serandour, Guillaume et al

in International Confernce on Advanced Computational Methods in Engineering, Liège, 2008 (2008)

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See detailIl sacro approssimato: la fotografia artistica e devozionale
Dondero, Maria Giulia ULg

in Marrone, Gianfranco; Dusi, Nicola (Eds.) Destini del sacro. Discorso religioso e semiotica della cultura (2008)

Cet article porte sur les pratiques de la photographie qui ont visé à capturer et représenter l’invisible sur la plaque photographique. Il prend en considération la photographie médicale de Charcot, la ... [more ▼]

Cet article porte sur les pratiques de la photographie qui ont visé à capturer et représenter l’invisible sur la plaque photographique. Il prend en considération la photographie médicale de Charcot, la photographie spirite, la photographie des fluides, la photographie en tant qu’ex-voto, la photographie-relique et enfin la photographie dévotionnelle. Cette dernière est mise en relation avec la tradition iconographique et interprétative des images pieuses et des icones byzantines. Il s’est agi en ce dernier cas de prendre en compte la relation entre indicialité et attestation d’un au-delà tout en considérant les pratiques dévotionnelles comme des pratiques itératives d’accessibilité à une dimension sacrée de l’existence humaine. L’analyse a été consacrée à l’étude des configurations textuelles des photos ainsi qu’à leurs pratiques de réception. [less ▲]

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See detailGrowth and demise of a carbonate platform (Middle Devonian, Belgium) : sedimentary environments, magnetic susceptibility and stratigraphic evolution.
Mabille, Cedric; Da Silva, Anne-Christine ULg; Poulain, Geoffrey et al

in SDGG, Heft 58 – Abstract Volume – 26th IAS Regional Meeting/SEPM-CES SEDIMENT 2008 – Bochum (2008)

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See detailAnalytic properties of different unitarization schemes
Selyugin, O. V.; Cudell, Jean-René ULg; Predazzi, E.

in Eur. Phys. J. ST (2008), 162

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See detailThe practical challenges of the Biosafety officer : interacting with the user
Grignet, Christine ULg

in The Biosafety Professional: roles and interactions in a complex network (2008)

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See detailEmission of alarm pheromone in aphids: A contagious phenomenon?
Verheggen, François ULg; Mescher, Mark; Francis, Frédéric ULg et al

Poster (2008)

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See detailGmsh: a three-dimensional finite element mesh generator with built-in pre- and post-processing facilities
Geuzaine, Christophe ULg; Remacle, J.-F.

in Proceedings of the 9th International Workshop on Finite Elements for Microwave Engineering (2008)

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See detailA decision problem for ultimately periodic sets in non-standard numeration systems
Charlier, Emilie ULg; Rigo, Michel ULg

in Actes des Journées Montoises d'Informatique Théorique (2008)

Consider a non-standard numeration system like the one built over the Fibonacci sequence where nonnegative integers are represented by words over {0, 1} without two consecutive 1. Given a set X of ... [more ▼]

Consider a non-standard numeration system like the one built over the Fibonacci sequence where nonnegative integers are represented by words over {0, 1} without two consecutive 1. Given a set X of integers such that the language of their greedy representations in this system is accepted by a finite automaton, we consider the problem of deciding whether or not X is a finite union of arithmetic progressions. We obtain a decision procedure under some hypothesis about the considered numeration system. In a second part, we obtain an analogous decision result for a particular class of abstract numeration systems built on an infinite regular language. [less ▲]

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