References of "Scientific congresses and symposiums"
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See detailDetermination of the optimal forging conditions of a Cr-Mo-V high alloy steel through a microstructural, thermophysical and mechanical study
Bouffioux, Chantal ULg; Carton, Marc ULg; Lecomte-Beckers, Jacqueline ULg et al

in Banabic, D. (Ed.) Proceedings of the 8th ESAFORM Conference on Material Forming (Vol. 1) (2005)

The forging process of cylinders requires the knowledge of material recrystallisation conditions to prevent crack appearance. Due to the continuous recrystallisation during forging, very large ... [more ▼]

The forging process of cylinders requires the knowledge of material recrystallisation conditions to prevent crack appearance. Due to the continuous recrystallisation during forging, very large deformations can be applied as the generated dislocations do not yield to hardening but to recrystallisation phenomenon. This paper summarizes the data identification of a FEM recrystallisation model and defines the optimal forging process for one roll. [less ▲]

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See detailThe SIDC GPS-Space Weather Service
Warnant, René ULg

Conference (2005)

Detailed reference viewed: 9 (0 ULg)
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See detailIn vitro activity of Beauveria bassiana against Psoroptes ovis
Lekimme, M.; Mignon, Bernard ULg; Focant, C. et al

Poster (2005)

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See detailNumerical tools for the optimization of hydroelectric power stations in cascade
Erpicum, Sébastien ULg; Archambeau, Pierre ULg; Dewals, Benjamin ULg et al

in Dick, Erik; Hogge, Michel; Van Keer, Roger (Eds.) Proceedings of the 3rd Internationale Conference on Advanced Computational Methods in Engineering (2005)

The numerical optimization process of the system of hydroelectric power stations installed on a 60 km long section of the rivers Amblève and Warche in Belgium is presented in detail. The river network is ... [more ▼]

The numerical optimization process of the system of hydroelectric power stations installed on a 60 km long section of the rivers Amblève and Warche in Belgium is presented in detail. The river network is modelled in quasi-2D using real natural topographic data on almost 1,100 finite volumes. In a first step, the hydrological balance is closed using a numerical solver and roughness coefficients are calibrated from water level and discharge field measurements. Secondly, the hydroelectric production is maximised by an automatic calibration of the parameters of the hydrograph released in the network at the upstream dam. This approach leads to a substantial gain in hydroelectric production, brings significant financial benefits and deals with all management and security criteria of the river network. [less ▲]

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See detailModel identification and FE simulations: effect of different yield loci and hardening laws in sheet forming
Flores, Paulo; Duchene, Laurent ULg; Lelotte, Thomas et al

in Smith, L. M.; Pourboghrat, F.; Yoon, J. W. (Eds.) et al On the Cutting Edge of Technology NUMISHEET 2005, Proceedings of the 6th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes (2005)

The bi-axial experimental equipment [1] developed by Flores enables to perform Baushinger shear tests and successive or simultaneous simple shear tests and plane-strain tests. Such experiments and ... [more ▼]

The bi-axial experimental equipment [1] developed by Flores enables to perform Baushinger shear tests and successive or simultaneous simple shear tests and plane-strain tests. Such experiments and classical tensile tests investigate the material behavior in order to identify the yield locus and the hardening models. With tests performed on two steel grades, the methods applied to identify classical yield surfaces such as Hill or Hosford ones as well as isotropic Swift type hardening or kinematic Armstrong–Frederick hardening models are explained. Comparison with the Taylor-Bishop-Hill yield locus is also provided. The effect of both yield locus and hardening model choice will be presented for two applications: Single Point Incremental Forming (SPIF) and a cup deep drawing. [less ▲]

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See detailLes difficultés rencontrées en matière sociale
Kefer, Fabienne ULg

in La loi du 4 mai 1999 instituant la responsabilité pénale des personnes morales (2005)

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See detailNote su alcuni mosaici ostiensi di nuova e remota acquisizione.
Morard, Thomas ULg

in X Congresso dell'Associazione Italiana per lo Studio e la Conservazione del Mosaico (AISCOM) : Lecce 18-21 février 2004 (2005)

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See detailConservation and Sustainable Use of Non Timber Forests Products in Favour of Local Communities in Integrated Forest Management Plans in Central Africa
Vermeulen, Cédric ULg; Doucet, Jean-Louis ULg

in De Dapper, M. (Ed.) Tropical Forests in a Changing Global Context (2005)

Recently adopted reforms of forest legislation in Central African countries take into account the interests of local communities. As organizations of different kinds have been promoting this aspect, all ... [more ▼]

Recently adopted reforms of forest legislation in Central African countries take into account the interests of local communities. As organizations of different kinds have been promoting this aspect, all stakeholders of the timber sector are compelled to consider it. However, the practical implementation of this aspect often remains undefined. For vegetal NTFPs, the existing studies are typified by either a purely descriptive (ethno)botanical approach (lists of species used by an ethnic group) or by processing studies (transformation, conservation, economic value and commercialization of products) or by inventories defining the densities of certain species. Only a few studies examine the productivity of certain species. Within this context, one can conclude that there is a lack of studies that monitor the pressure exerted by local communities on the available products. The forest manager remains destitute while trying to monitor the level of exploitation of the ecosystem, while implementing a sustainable exploitation of the available resources or when he tries to set up conservation measures. This study aims at solving this problem. At first, a quantitative follow-up of the pressure exerted on vegetal NTFPs by a local Badjoué community living at the border of the Dja Reserve (Cameroon) is presented. This community of hunters and farmers (317 inhabitants) can be considered as representative of the way of life of many ethnic groups in rain forests. Pressure exerted is defined in terms of consumed quantities of each product and during several seasons. The consumed quantities are then converted into numbers of fructifying trees. Main results are twofold: on the one hand, the consumption of major exploited NTFPs can be expressed in terms of consumed quantities per habitant and per day during a certain period. On the other hand, we were able to calculate the number of tree stands that should be available to cope with the demands of the local community (with about 300 members). We could conclude that it is necessary — for our Badjoué community — to have 26 fructifying Irvingia gabonensis trees, 17 Baillonella toxisperma trees, 7 Ricinodendron heudelotii trees and 71 Trichoscypha spp. trees. Such research allows forest managers to consider the needs of local communities. Finally, the example of the Moabi (Baillonnella toxisperma Pierre) is chosen to illustrate the usefulness of this kind of approach for forest management planning. [less ▲]

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See detailBedusted, yet not beheaded: The role of be-’s constructional semantics in its conservation
Petré, Peter ULg; Cuyckens, Hubert

Conference (2005)

Detailed reference viewed: 9 (0 ULg)
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See detailNumerical simulation and experimental validation of murine fracture healing
Geris, Liesbet ULg; Gerisch, A.; Maes, C. et al

in Proceedings of the fifth national day on biomedical engineering (2005)

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See detailNorepinephrine induces multiple 2nd degree atrio-ventricular blocks in healthy conscious horses
Sandersen, Charlotte ULg; Peters, F; Pequito, M et al

in Pflügers Archives - European journal of Physiology (2005)

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See detailModelling suspended load with moment equations and linear concentration profiles
Khuat Duy, Bruno ULg; Dewals, Benjamin ULg; Archambeau, Pierre ULg et al

in Raghay, S.; Ouazar, D.; Benkhaldoun, F. (Eds.) Finite volumes for complex applications (2005)

In numerical simulations, it is always necessary to find an optimum between the simplicity of the model and a good representation of real phenomena. In the field of hydraulic flows simulations, the models ... [more ▼]

In numerical simulations, it is always necessary to find an optimum between the simplicity of the model and a good representation of real phenomena. In the field of hydraulic flows simulations, the models using depth-averaged and moment equations are an interesting compromise between full 3D and simple depth-averaged models. This paper presents the use of a moment equation for suspended load transport. A simple but representative model for the sediment concentration profiles is developed. This original bi-linear concentration profile is compared to the traditional Rouse-profiles and shows a good correspondence despite its great simplicity. Advective and diffusive sediment fluxes are developed analytically and lead to a concise formulation, which is an asset for practical use. A differential equation for the sediment concentration moment is also fully developed, and a special attention is cast to the source term. The finite volume scheme has been chosen to implement the model, because it is particularly well suited for highly advective transport equations, it is conservative and it makes the choice of the upwinding easier. 1D simulations show the capacity of the model to reproduce laboratory experiments described in the literature. [less ▲]

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See detailSecondary metabolites in roots and implications for nematode resistance in banana (Musa spp.)
Wuyts, Nathalie; Lognay, Georges ULg; Sagi, Laszlo et al

in Turner, David W.; Rosales, Franklin E. (Eds.) Banana Root System: towards a better understanding for its productive management (2005)

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See detailDissociation between recall and recognition memory in amnesia: The case of a patient with hippocampal damage following carbon monoxide poisoning
Bastin, Christine ULg; Van der Linden, Martial ULg; Charnallet, Annik et al

in Proceedings of the Joint Mid-year meeting of the International Neuropsychological Society, the Division of Neuropsychology of the British Psychological Society and the British Neuropsychological Society (2005)

There is currently a debate regarding the status of recall and recognition memory in amnesic patients with focal hippocampal damage. Proportionate deficits of recall and recognition memory have been ... [more ▼]

There is currently a debate regarding the status of recall and recognition memory in amnesic patients with focal hippocampal damage. Proportionate deficits of recall and recognition memory have been observed in some patients with selective hippocampal damage. In addition, these patients showed an impairment of both the recollection and familiarity aspects of recognition memory. In contrast, other amnesic patients with selective hippocampal lesions demonstrated relatively preserved recognition memory, despite severely impaired recall abilities. In some of them, familiarity processes were found to be intact. The resolution of this controversy has important implications for theories of episodic memory. In the present study, we examined the recall and recognition performance of an amnesic patient, MR, who suffered from bilateral hippocampal damage and temporoparietal cortical atrophy following carbon monoxide poisoning. Verbal and nonverbal recall and recognition memory were measured by tasks matched for difficulty. On these tasks, MR’s recall performance was more severely impaired than his recognition memory. In addition, MR’s recognition performance was normal on most of the tasks. In order to determine on which processes MR based his recognition decisions, we administered to the patient and to matched controls the process dissociation procedure. This evaluates the contribution of recollection and familiarity within a recognition task. The results indicated that, in this patient, familiarity was preserved, but recollection was impaired. This study thus supports the idea that amnesic patients with hippocampal damage can show preserved familiarity-based recognition memory, despite poor recall and recollection. [less ▲]

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See detailSelecting concise sets of samples for a reinforcement learning agent
Ernst, Damien ULg

in Proceedings of the 3rd International Conference on Computational Intelligence, Robotics and Autonomous Systems (CIRAS 2005) (2005)

We derive an algorithm for selecting from the set of samples gathered by a reinforcement learning agent interacting with a deterministic environment, a concise set from which the agent can extract a good ... [more ▼]

We derive an algorithm for selecting from the set of samples gathered by a reinforcement learning agent interacting with a deterministic environment, a concise set from which the agent can extract a good policy. The reinforcement learning agent is assumed to extract policies from sets of samples by solving a sequence of standard supervised learning regression problems. To identify concise sets, we adopt a criterion based on an error function defined from the sequence of models produced by the supervised learning algorithm. We evaluate our approach on two-dimensional maze problems and show its good performances when problems are continuous. [less ▲]

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See detailA case of sylvatic dermatophytosis due to Trichophyton mentagrophytes in a cat
Carlotti, D.-N.; De Barbeyrac, P.; Mignon, Bernard ULg et al

Poster (2005)

Detailed reference viewed: 10 (0 ULg)
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See detailLa consommation de pommes de terre en Belgique
Duquesne, Brigitte ULg; Matendo, Sadrac; Burny, Philippe et al

Conference (2005)

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See detailAccuracy assessment of an IKONOS derived DSM over urban and suburban area
Devriendt, D.; Goossens, R.; Binard, Marc ULg et al

in Jacobsen, K.; Goossens, Rudi; Winkler, P. (Eds.) Proceding of the EARSeL Workshop 3D-Remote Sensing: Porto, June 10 - 11, 2005 (2005)

Detailed reference viewed: 34 (9 ULg)
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See detailIn vivo m-RNA expression analysis of Microsporum canis secreted subtilisin-like serine proteases in feline dermatophytosis
Mignon, Bernard ULg; Vermout, Sandy; Brouta, F. et al

in Advances in Veterinary Dermatology (2005)

Detailed reference viewed: 23 (6 ULg)
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See detailAnalysis of tapered steel frames using beam elements and comparison with shell elements
Boissonnade, N.; Degée, Hervé ULg

in Proceedings of the 4th European Conference on Steel Structures (2005)

This paper deals with the consequences of modelling a tapered steel frame with beam elements rather than shell elements. It starts by presenting a specific beam element accounting for the tapering that ... [more ▼]

This paper deals with the consequences of modelling a tapered steel frame with beam elements rather than shell elements. It starts by presenting a specific beam element accounting for the tapering that allows performing geometrically as well as materially non-linear analysis. Then, several kinds of analyses are carried out on two different frames and the results obtained using shell elements, tapered beam elements and prismatic beam elements are compared. This comparison shows that the use of tapered elements leads to results in close agreement with those obtained by shell elements, unlike the prismatic ones. The paper aims at showing that resorting to a so-called segmentation technique should be decided carefully. It also intends at showing the accuracy and convenience of tapered elements when compared to shell models: the total number of degrees of freedom is indeed significantly reduced, leading to easier meshing, shorter computation time and easier interpretation of results. [less ▲]

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See detailRemoval of PCDD/Fs and DL-PCBs from fish oil by activated carbon: Compliance with European Legislation
Eppe, Gauthier ULg; Carbonnelle, Sophie; Hellebosch, Laeticia et al

in Organohalogen Compounds (2005), 67

Detailed reference viewed: 14 (1 ULg)
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See detailProcessus de paternalité
Naziri, Despina ULg

Conference (2005)

Detailed reference viewed: 30 (4 ULg)
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See detailPourquoi SHARE?
Perelman, Sergio ULg; Pestieau, Pierre ULg

in Les Finances publiques: Défis à moyen et long termes (2005)

SHARE, l’acronyme de Survey on Health, Ageing and Retirement in Europe, est sans nul doute une des plus grandes enquêtes jamais réalisées au niveau européen. Elle s'adresse à la population de 50 ans et ... [more ▼]

SHARE, l’acronyme de Survey on Health, Ageing and Retirement in Europe, est sans nul doute une des plus grandes enquêtes jamais réalisées au niveau européen. Elle s'adresse à la population de 50 ans et plus, et a l'originalité d'être internationale, multidisciplinaire et longitudinale. Ces caractéristiques font de SHARE l'instrument indispensable pour mieux comprendre la réalité du vieillissement, ses implications sociales et économiques. Il devrait à terme permettre développer des politiques économiques à la fois plus efficaces et équitables tant à l’échelon national qu’européen. [less ▲]

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See detailSpecific virulence properties of avian pathogenic Escherichia coli (APEC)
Mainil, Jacques ULg; Stordeur, P.; Moulin-Schouleur, M.

Conference (2005)

Detailed reference viewed: 2 (0 ULg)
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See detailRange-dependence compensation in bistatic radar STAP
Lapierre, Fabian D.; Verly, Jacques ULg

Conference (2005)

Detailed reference viewed: 1 (0 ULg)
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See detailModelling suspended load transport with linear concentration profiles
Khuat Duy, Bruno ULg; Dewals, Benjamin ULg; Archambeau, Pierre ULg et al

in Proceedings of the 8th International Conference on Fluvial Sedimentology (2005)

In numerical simulations, it is always necessary to find an optimum between the simplicity of the model and a good representation of real phenomena. In the field of hydraulic flows simulations, the models ... [more ▼]

In numerical simulations, it is always necessary to find an optimum between the simplicity of the model and a good representation of real phenomena. In the field of hydraulic flows simulations, the models using depth-averaged and moment equations are an interesting compromise between full 3D and simple depth-averaged models. This paper presents the use of a moment equation for suspended load transport. A simple but representative model for the sediment concentration profiles is developed. This original bi-linear concentration profile is compared to the traditional Rouse-profiles and shows a good correspondence despite its great simplicity. Advective and diffusive sediment fluxes are developed analytically and lead to a concise formulation, which is an asset for practical use. A differential equation for the sediment concentration moment is also fully developed, and a special attention is cast to the source term. The finite volume scheme has been chosen to implement the model, because it is particularly well suited for highly advective transport equations, it is conservative and it makes the choice of the upwinding easier. 1D simulations show the capacity of the model to reproduce laboratory experiments described in the literature. [less ▲]

Detailed reference viewed: 39 (3 ULg)
See detailTracking the early record of life
Javaux, Emmanuelle ULg

Conference (2005)

Detailed reference viewed: 3 (0 ULg)
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See detailSynthesis of SiO2 xerogels and Pd/SiO2 cogelled xerogel catalysts from silylated acetylacetonate ligands
Lambert, Stéphanie ULg; Sacco, Luigi; Ferauche, Fabrice et al

Conference (2005)

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See detailImpact of saturation on spin effects in proton-proton scattering
Selyugin, Oleg Viktorovich; Cudell, Jean-René ULg

in Czechoslovak Journal of Physics (2005), 55(Suppl. A), 235-242

For pomerons described by a sum of two simple-pole terms, a soft and a hard pomeron, the unitarity bounds from saturation in impact-parameter space are examined. We consider the effect of these bounds on ... [more ▼]

For pomerons described by a sum of two simple-pole terms, a soft and a hard pomeron, the unitarity bounds from saturation in impact-parameter space are examined. We consider the effect of these bounds on observables linked with polarisation, such as the analyzing power A(N) in elastic proton-proton scattering, for LHC energies. We obtain the s and t dependence of the Coulomb-nuclear interference at small momentum transfer, and show that the effect of the hard pomeron may be observed at the LHC. [less ▲]

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See detailMonachisme féminin au pays de Liège à la fin du XVIIe siècle : une vie sub clausura perpetua ?
Henneau, Marie-Elisabeth ULg

in Histoire, Economie et Société (2005), 3

Detailed reference viewed: 13 (1 ULg)
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See detailSelenium status around peripartum in beef cows and claves offered grass silage and barley produced with selenium enriched fertilizers
Cabaraux, Jean-François ULg; Hornick, Jean-Luc ULg; Schoonheere, Nicolas ULg et al

in Book of absracts of the 56th Annual Meeting of the European Association for Animal Production (2005)

Detailed reference viewed: 7 (0 ULg)
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See detailSurface quality of Self-Compacting Concrete and Raw Materials Properties
Dieryck, Vinciane; Desmyter, Jan; Michel, Frédéric ULg et al

in Shah, S. P. (Ed.) Self-Consolidating Concrete (2005)

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See detailInterleukin-6 mediates subchondral osteoblasts-induced cartilage degradation
Henrotin, Yves ULg; Kaut, Elisabeth; Deberg, Michelle ULg et al

Poster (2005)

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See detailRadiochemical Synthesis of OCH2F-[18F]MPPF a New Analogue of p-[18F]MPPF for the Study of 5-HT1A Receptors.
Defraiteur, C.; Lemaire, Christian ULg; Luxen, André ULg et al

in Journal of Labelled Compounds & Radiopharmaceuticals (2005), 48

Detailed reference viewed: 21 (1 ULg)
See detailCatalytic applications of transition metal N-heterocyclic carbene complexes bearing nitrogen-containing substituents
Sauvage, Xavier ULg; Tudose, Adriana; Delfosse, Sébastien et al

Poster (2005)

Detailed reference viewed: 28 (3 ULg)
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See detailGrey level intercepts distributions and grain size estimation
Lebichot, Sophie; Dislaire, Godefroid; Pirard, Eric ULg et al

in Proceedings 8th European Congress for Stereology and Image Analysis (2005)

Detailed reference viewed: 31 (7 ULg)
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See detailIntégrité structurale sous actions exceptionnelles
Demonceau, Jean-François ULg; Luu, H.; Jaspart, Jean-Pierre ULg

in Actes du Colloque International: L'acier dans la construction 2ème édition (2005)

Detailed reference viewed: 32 (8 ULg)
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See detailWhich peridialysis blood pressure best predicts interdialytic level?
Bataille, Yoann ULg; Saint-Remy, Annie ULg; Godon, Eric et al

in Journal of Hypertension (Supplement) (2005), 23(suppl 2), 34

Detailed reference viewed: 15 (0 ULg)
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See detailIn vitro and in vivo effects of salbutamol acetonide on cat airways
Leemans, Jérôme ULg; Kirschvink, Nathalie; Delvaux, F. et al

in Proceedings: Société Belge de Physiologie et de Pharmacologie Fondamentales et Cliniques (2005)

Detailed reference viewed: 17 (3 ULg)
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See detailFeelings of Justice at School : Results of a Survey Among 8th Graders in Europe
Baye, Ariane ULg; Gorard, S.; Smith, E.

Conference (2005)

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See detailFDG-PET imaging for diagnosing bone infection.
LETESSON, G.; FOIDART-WILLEMS, Jacqueline ULg; HUSTINX, Roland ULg

in Journal of Nuclear Medicine (The) (2005), 46(SUPPL), 323

Detailed reference viewed: 11 (0 ULg)
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See detailRepeatability of allergen challenges in a feline model of asthma : effect on airway reactivity and airway inflammation
Kirschvink, Nathalie; Leemans, Jérôme ULg; Delvaux, F. et al

in Proceedings of the American Thoracic Society, San Diego, California (2005)

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See detailStable isotopes and mercury in blood of harbour seals (Phoca vitulina) caught on a German sandbank
Di-Poi, C.; Siebert, Ursula; Drouguet, Olivier et al

Poster (2005)

More than 21 500 harbour seals were killed by Phocine Distempter Virus in the North Sea and adjacent waters in 2002. After the second seal die-off had ceased, seals were captured alive (and then released ... [more ▼]

More than 21 500 harbour seals were killed by Phocine Distempter Virus in the North Sea and adjacent waters in 2002. After the second seal die-off had ceased, seals were captured alive (and then released) on a sandbank (Schleswig-Holstein, Germany) for health and ecotoxicological investigations. Stable carbon and nitrogen ratios (δ13C and δ15N) were measured by mass spectrometry in clotted blood cells of 24 harbour seals captured between 2002 and 2003. Total mercury (Hg) concentrations were determined by spectrometric absorption in the whole blood of 8 harbour seals and compared to the Hg level measured in blood from 8 seals found stranded along the southern North Sea coast. The average isotopic composition measured in the blood cells was –15.6 ± 0.3 0/00 and 18.7 ± 0.6 0/00 for δ13C and δ15N respectively, similar to that obtained previously in muscle of stranded individuals, confirming the high position of the harbour seal in the trophic food chain. δ13C and δ15N values did not differ significantly between seals caught in November 2002, April 2003 and September 2003 suggesting similar diet throughout these 3 periods. The average concentration of mercury in whole blood of living and stranded harbour seals did not differ significantly (94 ± 41 vs 146 ± 71 µg.l-1 respectively). No biological parameters (weight, length, age status and stable isotopes ratios) seemed to influence these concentrations. Blood is known to reflect recent exposure to mercury through the diet. These preliminary results suggest that blood is an interesting substrate for both trophic studies and pollutant long-term monitoring of the harbour seal in the North Sea. [less ▲]

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See detailConnexion implants - prothèse
Van Heusden, Alain ULg

Conference (2005)

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See detailPharmacokinetic study of a new testosteron in-Adhesive Matrix patch applied every two days to hypogonadal men
Raynaud, J. P.; Aumonier, C.; Gualano, V. et al

in The Endocrine society ENDO 2005 - Abstract book (2005)

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See detailEvaluation de liquides ioniques chiraux comme sélecteurs pour des séparations électrocinétiques d'énantiomères en veine liquide capillaire
François, Yannis; Juillerat, E.; Villemin, Didier et al

Poster (2005)

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See detailOptimal location of inter-modal terminals
Jourquin, Bart; Limbourg, Sabine ULg

Conference (2005)

The optimal location of a facility is a rather complex task that was already studied many times. Several optimal location problems and solution exists, but only a few can be applied to the location of ... [more ▼]

The optimal location of a facility is a rather complex task that was already studied many times. Several optimal location problems and solution exists, but only a few can be applied to the location of multimodal freight terminals. Among the possible approaches, if theoretical solutions can be found in the literature, the computational complexity of the proposed methods make them impossible to be applied to real world large geographical networks. Indeed, many of them are based on linear programming, for which the number of constraints drastically increases with the number of terminals to take into account. This paper identifies the possible existing theoretical exact solutions and the framework of a new approach, in which the initial set of potential terminals is computed by means of the results obtained by the assignment of the flows of commodities on the trans-European network. [less ▲]

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See detailTemporal variability of settlement in Carapidae larvae (Teleostei) at Rangiroa atoll
Colleye, Orphal ULg; Brié, Christophe; Vandewalle, Pierre ULg et al

Poster (2005)

Carapidae (or pearlfish) are eel-like fishes living inside different invertebrates, such as holothurians, sea stars or bivalves. In some Polynesian areas where they live in sympatry, several species ... [more ▼]

Carapidae (or pearlfish) are eel-like fishes living inside different invertebrates, such as holothurians, sea stars or bivalves. In some Polynesian areas where they live in sympatry, several species (Carapus homei, Carapus mourlani, Carapus boraborensis and Encheliophis gracilis) are able to inhabit the same host species. The heterospecific infestation rate is very rare, suggesting that the four species can compete for their hosts. Some differences in settlement period, breeding period and in pelagic larval duration (PLD) could allow better characterisation of the life history of each species. More than 700 larvae were collected during an entire year on the Rangiroa atoll (French Polynesia). Each species was identified; their settlement pattern was examined and their PLD was deduced from otolith (sagittae) increments. In the four collected species, the settlement pattern differed: C. homei and C. mourlani settle on the reef during the entire year, and show an asynchronous and diffuse breeding cycle. C. boraborensis and E. gracilis have a shorter settlement period which could be compatible with breeding synchronisation. As most reef fishes, Carapidae larvae mainly settle during moonless nights. Moreover, each species presents some plasticity, allowing it to settle on the reef under suitable conditions. [less ▲]

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See detailFast 2D model-to-image registration using vanishing points for sports video analysis
Hayet, Jean-Bernard; Piater, Justus ULg; Verly, Jacques ULg

Conference (2005)

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See detailBiomedical image classification with random subwindows and decision trees
Marée, Raphaël ULg; Geurts, Pierre ULg; Piater, Justus ULg et al

in Computer Vision for Biomedical Image Applications (2005)

In this paper, we address a problem of biomedical image classification that involves the automatic classification of x-ray images in 57 predefined classes with large intra-class variability. To achieve ... [more ▼]

In this paper, we address a problem of biomedical image classification that involves the automatic classification of x-ray images in 57 predefined classes with large intra-class variability. To achieve that goal, we apply and slightly adapt a recent generic method for image classification based on ensemble of decision trees and random subwindows. We obtain classification results close to the state of the art on a publicly available database of 10000 x-ray images. We also provide some clues to interpret the classification of each image in terms of subwindow relevance. [less ▲]

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See detailPregnancy-associated glycoprotein (PAG) profiles during the peri-implantation period in recipients carrying bovine somatic clones: preliminary results
Heyman, Yvan; Chavatte-Palmer, P.; Melo de Sousa, Noelita ULg et al

in Reproduction, Fertility and Development (2005), 17(1-2), 168

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See detailAfrican rainforest : Evolution and Threats
Doucet, Jean-Louis ULg

in De Dapper, M. (Ed.) Tropical Forest in a Changing Global Context (2005)

According to recent data (GLC2000 map), African dense forests cover c. 236 million ha, that is 7.9 % of the total continent area. The Central African forest is the last contiguous block of tropical forest ... [more ▼]

According to recent data (GLC2000 map), African dense forests cover c. 236 million ha, that is 7.9 % of the total continent area. The Central African forest is the last contiguous block of tropical forest in Africa; it covers an area of c. 203 million ha, whereas the forest cover of West Africa (c. 10 million ha) is highly fragmented. At the fringes of the Congo Basin, forests are replaced by woodlands and shrublands, mixed in some places with croplands. Woodlands and shrublands together cover 27 % of the continent, while grasslands represent 15 % of the land. The largest desert in the world is the Sahara desert that covers an area of c. 900 million ha or 33 % of the African continent. Agricultural activities extend over 12 % of the continent. The area of cropland is more important in West Africa than in Central Africa, respectively 16 % and 7 %. Closely related to agriculture, the deforestation rate is higher in West Africa (1.7 % versus 0.4 %). The other causes of deforestation are logging, mining activities, infrastructure development and fires. The most forested countries of the continent are: Central African Republic (c. 8 million ha), Gabon (c. 21 million ha), Cameroon (c. 21 million ha), Congo (c. 26 million ha) and D. R. Congo (c. 125 million ha). These five countries account for 85 % of the African dense forest. In Central Africa, 45 % of the total forest area is under a logging concession status. As a consequence, logging activities play a major role in the Central African rainforest’s future. According to the ITTO (International Tropical Timber Organization) figures, in 2003 the estimated productions of the five previously mentioned countries were: c. 7.4 million m3 of logs; c. 1.1 million m3 of sawn wood; c. 380,000 m3 of plywood and veneer, that is less than 1 % of the world production. Logging in Central Africa is characterized by its high selectivity. For economic reasons, only a few species are commercialized. Usually only one to two trees are felled per hectare and the cover disturbance is about 10 %. The most felled species can be grouped in two categories: hygrophilous evergreen rain forest species and moist semi-evergreen rain forest species. The first category is mainly composed of azobe Lophira alata, beli Julbernardia pellegriniana, douka Tieghemella africana, kevazingo Guibourtia spp., okoume Aucoumea klaineana, pachyloba Afzelia pachyloba, tali Erythrophleum ivorense. The second category is made up of afromosia Pericopsis elata, agba Prioria balsamifera, ayous Triplochyton scleroxylon, dibetou Lovoa trichiloides, frake Terminalia superba, iroko Milicia excelsa, kossipo Entandrophragma candollei, moabi Baillonella toxisperma, movingui Distemonanthus benthamianus, padouk Pterocarpus soyauxii, sapelli Entandrophragma cylindricum, sipo Entandrophragma utile. The major forest companies in the region are mostly subsidiaries of larger European firms (French, German, etc.) although Asian business is becoming more and more important. Obliged by the recent evolution of the Central African forestry laws, some of these logging companies are conceiving forest management plans. The management methods currently implemented were developed as normative regulations issued under the forest laws in the region. The basis of these methods is a statistical inventory of the resources which allows the determination of the population structures, i.e. the number of stems per diameter class. Considering increment and mortality, rotation and/or minimum felling diameters are adapted to reach a satisfactory reconstitution rate. Unfortunately, undamental knowledge about the species population dynamic parameters is still lacking and finally the precision on the rate of reconstitution after a cutting cycle is jeopardized. Moreover, these methods do not pay any attention to long-term preservation of the logged species, since species could have a satisfactory level of reconstitution after one rotation, but could disappear after a second cycle. For such species specific interventions are needed to improve their natural regeneration capacities. In this paper, examples are given for a 176,000 ha management unit in Cameroon for flagship species: assamela Pericopsis elata, ayous Triplochyton scleroxylon, iroko Milicia excelsa, moabi Baillonella toxisperma, sapelli Entandrophragma cylindricum and tali Erythrophleum ivorense. The obtained results attest the need to implement sylvicultural techniques in order to maintain the production capacity of the African rain forests, this production capacity being the best guarantee for the preservation of their integrity. [less ▲]

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See detailSubstance 101333-3 reduces pulmonary oxidative stress in cadmium-exposed rats
Kirschvink, Nathalie; Fievez, Laurence ULg; Marlin, D. et al

in European Respiratory Journal (2005), 104s

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See detailAnalyse inverse d’une courbe pressiométrique par algorithme génétique
Levasseur, Séverine ULg; Malécot, Yann; Boulon, Marc et al

in Gambin, Michel; Magnan, Jean-Pierre; Mestat, Philippe (Eds.) ISP5 - Pressio 2005 - Volume 1 (2005)

Cet article est consacré à l’identification des paramètres constitutifs d’un modèle de Mohr-Coulomb à partir d’un essai pressiométrique. Pour minimiser l’écart entre le résultat de l’essai et sa ... [more ▼]

Cet article est consacré à l’identification des paramètres constitutifs d’un modèle de Mohr-Coulomb à partir d’un essai pressiométrique. Pour minimiser l’écart entre le résultat de l’essai et sa simulation numérique, une optimisation par algorithme génétique est proposée. On montre qu’il semble difficile d’identifier simultanément un module de déformation et un angle de frottement à partir d’une seule courbe pressiométrique [less ▲]

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See detailAre cannibalistic morphs of the tiger salamander obligatory cannibals?
Denoël, Mathieu ULg; Whiteman, Howard; Wissinger, Scott

Conference (2005)

Tiger salamanders exhibit alternative trophic morphologies, with cannibals developing a larger head and longer teeth than typical larvae. Resource partitioning is known between morphs, with cannibal ... [more ▼]

Tiger salamanders exhibit alternative trophic morphologies, with cannibals developing a larger head and longer teeth than typical larvae. Resource partitioning is known between morphs, with cannibal morphs usually foraging on conspecifics and rarely on small organisms. Our aim was to determine whether the cannibal and typical morphs shift their diets across time and particularly whether conspecifics are necessarily the main prey of cannibals and plankton the primary prey of typicals. We found that only the cannibal morph foraged on conspecifics, but not all the time. Cannibalism typically occurred only early after the ontogenetic divergence between morphs. Cannibals shifted their diet later in the summer to plankton, and this ontogenetic shift led to dietary overlap with the typical morph. In contrast to other studies, our findings suggest that the cannibal morphology actually allows the consumption of a larger variety of prey, rather than specialization on specific resources (i.e., conspecifics). The outcomes of the cannibalistic ontogenetic pathway include a higher biomass intake from food and a larger size than typicals. From a foraging perspective, the cannibalism pathway is clearly advantageous over the typical morphology. However, the increased diet breadth of cannibal morphs found in this study suggests that the maintenance of the polyphenism is more complex than has previously been suggested. [less ▲]

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See detailApplication of space-time adaptive processing (STAP) to conformal arrays
Ries, Philippe; Lapierre, Fabian D.; Verly, Jacques ULg

Conference (2005)

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See detailSimulation of radionuclide mass fluxes in a heterogeneous clay formation locally disturbed by excavation
Huysmans, Marijke; Berckmans, Arne; Dassargues, Alain ULg

in Renard, Philippe; Demougeot-Renard, H.; Froidevaux, R. (Eds.) Geostatistics for Environmental Applications (Proc. of GEOENV’2004) (2005)

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See detailPlongée et barotraumatisme chez les cétacés
Jauniaux, Thierry ULg

in annual proceeding (2005)

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See detailProcessus de qualification du produit « viande bovine » veillant à valoriser les multiples fonctions de l’élevage
Stilmant, Didier; Stassart, Pierre M ULg; Jamar, Daniel

in Actes des Journées de Fourrage Actualité (2005)

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See detailMetabolic profiling in pea seeds
Vigeolas, Hélène ULg

Conference (2005)

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See detailEcological and pathological factors related to trace metal concentrations in harbour seal Phoca vitulina in the North Sea
Drouguet, Olivier; Siebert, Ursula; Jauniaux, Thierry ULg et al

Poster (2005)

During the last decade, recurrent epizootics have affected harbour seal (Phoca vitulina) populations in the North Sea. Recent data on their trophic habits and pollutant levels are of primary importance ... [more ▼]

During the last decade, recurrent epizootics have affected harbour seal (Phoca vitulina) populations in the North Sea. Recent data on their trophic habits and pollutant levels are of primary importance for their conservation. As isotopic composition of an animal is related to that of its prey, δ13C and δ15N were measured by mass spectrometry in the muscles of 66 harbour seals beached along the coasts of France (n = 10), Belgium (n = 30) and Netherlands (n = 26) between 1994 and 2004. Trace metals concentrations (Zn, Cu, Fe, Cd, Hg and Se) were also determined in liver, kidney and muscles by Inducted Plasma Spectrometry. δ13C and δ15N values remained similar between harbour seals from France (-15.7 0/00; 18.7 0/00, respectively), Belgium (-15.7 0/00; 19.0 0/00, respectively) and Netherlands (-14.7 0/00; 18.7 0/00, respectively). These data are in good agreement with their coastal and piscivorous life style. Isotopic value remained similar between males and females and between body conditions. Hg levels were significantly higher in seals from the southern North Sea when compared to previously published data from seals collected in Norway, probably due some geographical differential exposure. Hepatic Hg was positively correlated to hepatic Se, both increasing with the length of the seals. Such a relationship reflected an age accumulation process coupled to a detoxication mechanism involving antagonism between Hg and Se in the liver. No relationship between stable isotopes and Hg and Cd levels was observed. Increasing Zn and Hg hepatic levels were observed with degrading body condition of the harbour seals, which is reflected by decreasing blubber thickness and high hepatic to total body mass ratio. These observations tend to indicate a global redistribution of trace metals from muscle and blubber to liver, as a result of protein and lipid catabolism linked to disease and starvation. [less ▲]

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See detailAxes rotation during simple shear test: Measurement and predictions
Lelotte, Thomas; Gerday, Anne-Françoise ULg; Flores, Paulo et al

in Oñate, E.; Owen, D. R. J. (Eds.) Proceedings of the VIII International Conference on Computational Plasticity (COMPLAS VIII) (2005)

For a simple shear test, the finite element (FE) local frame, that stays orthogonal, does not follow the anisotropic material frame. To study this effect, FE simulations have been compared with ... [more ▼]

For a simple shear test, the finite element (FE) local frame, that stays orthogonal, does not follow the anisotropic material frame. To study this effect, FE simulations have been compared with experimental results (optical and texture measurements) and it was shown that it is necessary to take into account the effect of texture updating for local axes rotation. [less ▲]

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See detailSound-producing apparatus of the snake-blenny Ophidion barbatum
Fontenelle, Nicolas; Henrist, Catherine ULg; Cloots, Rudi ULg et al

Poster (2005)

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See detailSeismic assessment of an S-shape building with expansion joints
Plumier, André ULg; Denoël, Vincent ULg; Sanchez, Luiz et al

(2005)

An elastic analysis of an existing 20-storey reinforced concrete moment resisting frame divided in 3 blocks shows that beams supported on corbels of the adjacent block at the expansion joint loose their ... [more ▼]

An elastic analysis of an existing 20-storey reinforced concrete moment resisting frame divided in 3 blocks shows that beams supported on corbels of the adjacent block at the expansion joint loose their support when each independent block vibrate on its own under earthquake. Different reconnection hypothesis were considered, ranging from fixing totally each block to the adjacent one to more flexible options leaving some free relative move between blocks. An elastic modal superposition followed by a pushover analysis considering the final reconnection principle were made. The degrees of freedom of the joint reconnections were observed to be an important parameter. The solution found leaves a free relative rotational move between blocks and a flexible translational movement, so that forces at the connection do not become uselessly high. The springs used (long tie rods) work essentially elastically so that no permanent relative displacement exists between blocks after an earthquake. [less ▲]

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See detailNeural correlates of fast and slow ocular sequence learning
Albouy, Geneviève ULg; Ruby, Perrine; Balteau, Evelyne ULg et al

in NeuroImage (2005), 26(Suppl. 1),

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See detailSTAT5 promotes granulocyte survival during inflammation
Fievez, Laurence ULg; Desmet, Christophe ULg; Seumois, G. et al

in Proceedings: The American Thoracic Society (2005)

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See detailDémarche d’investigation des situations de harcèlement moral dans une perspective d’aide et de diagnostic. .
Faulx, Daniel ULg

in Actes du 13ème Congrès de Psychologie du Travail et des Organisation de Langue Française. CD-rom. Bologna : CLUEB. (2005)

Le but de cette communication est d’introduire un modèle clinique de diagnostic de situations de souffrance relationnelles au travail, y compris le harcèlement moral. Ce modèle vise à offrir aux ... [more ▼]

Le but de cette communication est d’introduire un modèle clinique de diagnostic de situations de souffrance relationnelles au travail, y compris le harcèlement moral. Ce modèle vise à offrir aux professionnels une grille d’analyse utilisable dans le cadre d’entretiens avec des personnes se sentant victimes de harcèlement moral ou de violence au travail. Les corpus théoriques de référence sont principalement la littérature clinique et organisationnelle sur le harcèlement moral, celle sur la violence au travail, l’analyse systémique des phénomènes d’abus et de conflit en organisation et le coping en situation de stress. Ce modèle a été construit à partir d’un programme de recherche-action comprenant d’une part la rencontre de personnes s’estimant victimes de harcèlement moral, et d’autre part l'analyse d’interventions en organisations à des fins de gestion de conflits. Une méthode d’analyse de cas a été appliquée afin d’identifier dans les témoignages de victimes quels étaient les éléments déterminants d’une situation de harcèlement moral. Plus précisément, nous avons inventorié pour chacun des entretiens les comportements de harcèlement décrits par les personnes, les conséquences qu’elles rapportaient, leurs stratégies pour y faire face, la durée et le contexte organisationnel de la situation. Les interventions en organisations ont été également analysées afin d’investiguer la manière dont les personnes définissaient et décrivaient les situations de souffrance relationnelles au travail. Dans ce cas, c’est l’ensemble des protagonistes que nous avons interrogés sur les sujets étudiés dans les analyses de cas. Ce modèle propose de distinguer cinq phénomènes : la souffrance aiguë au travail, la violence au travail, l’hyperconflit au travail, l’abus sur le lieu de travail et le harcèlement moral. Afin de mener le diagnostic, des critères discriminants sont proposés : l’observation des conséquences sur le bien-être, l’analyse des comportements hostiles, l’observation des dynamiques cognitives entre les parties, la complémentarité de la relation et l’échec du coping. [less ▲]

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See detailEtude du processus constitutif de la parentification
Haxhe, Stéphanie ULg

Poster (2005)

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See detailProteomic approach to investigate plant – aphid interactions
Francis, Frédéric ULg; Gerkens, Pascal; De Pauw, Edwin ULg et al

Conference (2005)

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See detailMitigation of soft storey failures of RC structures under earthquake by encased steel profiles
Plumier, André ULg; Doneux, Catherine; Stoychev, Lyubomir et al

in Proceedings of the ICASS'05 Conference (2005)

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See detailHeat generation due to friction and plastic dissipation – a coupled thermomechanical approach for impact and metal forming simulation
Adam, L.; Ponthot, Jean-Philippe ULg

in Proceedings of Int. Conf. on Computational Methods for Coupled Problems in Science and Engineering – COUPLED PROBLEMS 2005 (2005)

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See detailInefficiency of magma mixing and source heterogeneity in the genesis of granitoids: the example of the Farsund body (southern Norway)
Dupont, Alain; Vander Auwera, Jacqueline ULg; Paquette, Jean-Louis et al

in Geophysical Research Abstracts (2005), 7

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See detailImpacts des choix alimentaires sur la production agricole
Duquesne, Brigitte ULg

Conference (2005)

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See detailVariability of cotton diploid species SSR amplification in interspecific hybrids
Konan, N.O; Baudoin, Jean-Pierre ULg; Ben Bouza, H et al

in Proceedings of the plant & Animal Genome Conference XIII (2005)

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See detailThe Middle-Devonian proto-ovule Runcaria heinzelinii Stockmans 1968
Gerrienne, Philippe ULg; Meyer-Berthaud, B.; Fairon-Demaret, Muriel ULg et al

Conference (2005)

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See detailLe concept d'esquisse augmentée
Leclercq, Pierre ULg

in Proceedings of SCAN 2005 (2005)

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