References of "Scientific congresses and symposiums"
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See detailIntentional patina of metal archaeological artefacts; a non-destructive investigation of Egyptian and Roman museum treasures
Mathis, François ULg; Aucouturier, Marc; Robcis, Dominique et al

Conference (2009)

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See detailUnified Freezing of Gait Rating Scale (UFOGS)
Cremers, Julien ULg; Garraux, Gaëtan ULg

in Movement Disorders : Official Journal of the Movement Disorder Society (2009), 24(Suppl. 1), 432-433

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See detailMCF-7/BOS cells membrane proteome: comparison of two isolation methods using mass spectrometry
Bertrand, Virginie ULg; Massart, Anne-Cécile ULg; De Pauw-Gillet, Marie-Claire ULg et al

Poster (2009)

Membrane proteins play an important role in biological processes but their isolation and quantification using classical techniques is often limited due to their poor solubility and relatively low ... [more ▼]

Membrane proteins play an important role in biological processes but their isolation and quantification using classical techniques is often limited due to their poor solubility and relatively low abundance. These membrane markers have to be accessible to antibodies and should be potential therapeutic targets. The tests were conducted on MCF-7 / BOS cell line, immortal and easier to cultivate. The goal of this work is to obtain a pure membrane fraction to facilitate the analysis of the sample. To isolate transmembrane proteins, we compared two methods. The first one used different extraction cycles characterized by different buffers to isolate membrane proteins. The second method labelled accessible extracellular domains at the surface of MCF-7 cells with biotin prior to differential centrifugation. [less ▲]

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See detailCe que causer veut dire
Durand, Pascal ULg

in Durand, Pascal (Ed.) Entre presse et littérature. Le Mousquetaire, journal de M. Alexandre Dumas (1853-1857) (2009)

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See detailInfluences de l'environnement sur la fonction endocrinienne
Charlier, Corinne ULg

Conference (2009)

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See detailFonctions attentionnelles et exécutives dans la dyspraxie développementale
Lejeune, Caroline ULg; Catale, Corinne ULg; Meulemans, Thierry ULg

Conference (2009)

La dyspraxie développementale se manifeste principalement par des difficultés motrices qui interfèrent avec différentes situations de la vie quotidienne (écriture, dessin, habillage, …). Ces troubles du ... [more ▼]

La dyspraxie développementale se manifeste principalement par des difficultés motrices qui interfèrent avec différentes situations de la vie quotidienne (écriture, dessin, habillage, …). Ces troubles du geste, qui touchent environ 6 % des enfants de 5 à 11 ans, entraînent de lourdes conséquences sur les plans familial, scolaire et social. Plusieurs études ont montré qu’un déficit des capacités d’inhibition, de planification et de mémoire de travail était fréquemment observé chez les enfants souffrant de dyspraxie. Toutefois, en raison des nombreux problèmes méthodologiques rencontrés dans ces recherches (et plus particulièrement liés à l’absence de contrôle de la présence ou non du trouble de l’attention avec/sans hyperactivité – TDA/H - chez la population d’enfants dyspraxiques), les relations entre les troubles attentionnels et les troubles moteurs restent encore à l’heure actuelle mal comprises. L’objectif de cette étude vise à dégager, au travers d’une évaluation du fonctionnement attentionnel et exécutif, le profil neuropsychologique d’enfants diagnostiqués dyspraxiques, et ce en contrôlant la présence d’un TDA/H. Nous avons administré à 23 enfants dyspraxiques âgés de 6 à 12 ans et 23 enfants de contrôle (appariés sur base de l’âge, du sexe et du niveau d’études des parents) des tâches attentionnelles (alerte, attention sélective et divisée) de la batterie TEA et des épreuves exécutives (inhibition [Stroop et Go/No Go], flexibilité cognitive [TEA], mémoire de travail [BTT et mise à jour de TEA] et planification [Tour de Londres]). Les analyses de comparaison de moyennes indiquent que les enfants dyspraxiques présentent des performances inférieures à celles des enfants de contrôle pour l’essentiel des tests neuropsychologiques administrés. Toutefois, deux tiers des enfants dyspraxiques de notre échantillon présentent un trouble de l’attention (critères du DSM-IV). L’analyse des résultats au sein du groupe « dyspraxique sans TDA », permet de montrer que les difficultés de planification, d’attention sélective visuelle, d’inhibition motrice, de mémoire à court terme (BTT et mise à jour) sont spécifiques à la dyspraxie et donc indépendant de la présence d’un trouble de l’attention. En conclusion, cette étude préliminaire montre qu’une grande proportion d’enfants qui présentent une dyspraxie souffre également d’un trouble de l’attention. L’analyse du profil des enfants dyspraxiques montre des difficultés qui touchent l’ensemble des fonctions attentionnelles et exécutives. Toutefois, les difficultés d’analyse visuelle, de planification et de mémoire de travail semblent, quant à elles, spécifiques à la dyspraxie développementale. Des études futures réalisées sur un plus grand nombre de participants permettraient de confirmer cette hypothèse. [less ▲]

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See detailNumerical Evaluation of Load induced Thermal Strain in restraint Structures compared with an Experimental Study on reinforced Concrete Columns
Schneider, Ulrich; Schneider, Martin; Franssen, Jean-Marc ULg

in Conference Proceedings Fire and Materials 2009 (2009)

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See detailModelling and Simulation of Rat Swimming in a Water Maze Experiment
Fey, D.; Commins, Séan; Bullinger, Eric ULg

Poster (2009)

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See detailViscoelastic Modeling of Brain Tissue: A Fractional Calculus-Based Approach
Libertiaux, Vincent ULg; Pascon, Frédéric ULg

in Ganghoffer, Jean-François; Pastrone, Franco (Eds.) Mechanics of Microstructured Solids Cellular Materials, Fibre Reinforced Solids and Soft Tissues (2009)

In recent years, the mechanical study of the brain has become a major topic in the field of biomechanics. A global biomechanical model of the brain could find applications in neurosurgery and haptic ... [more ▼]

In recent years, the mechanical study of the brain has become a major topic in the field of biomechanics. A global biomechanical model of the brain could find applications in neurosurgery and haptic device design. It would also be useful for car makers, who could then evaluate the possible trauma due to impact. Such a model requires the design of suitable constitutive laws for the different tissues that compose the brain (i.e. for white and for gray matters, among others). Numerous constitutive equations have already been proposed, based on linear elasticity, hyperelasticity, viscoelasticity and poroelasticity. Regarding the strong strain-rate dependence of the brain’s mechanical behaviour, we decided to describe the brain as a viscoelastic medium. The design of the constitutive law was based on the Caputo fractional derivation operator. By definition, it is a suitable tool for modeling hereditary materials. Indeed, unlike integer order derivatives, fractional (or real order) operators are non-local, which means they take the whole history of the function into account when computing the derivative at current time t. The model was calibrated using experimental data on simple compression tests performed by Miller and Chinzei. A simulated annealing algorithm was used to ensure that the global optimum was found. The fractional calculus-based model shows a significant improvement compared to existing models. This model fits the experimental curves almost perfectly for natural strains up to − 0.3 and for strain-rates from 0.64s − 1 to 0.64 10− 2 s − 1. [less ▲]

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See detailEvaluation of the effect of load eccentricity on pull-off strength
Moczulski, Grzegorj; Garbacz, Andrzej; Courard, Luc ULg

in Alexander, M. G.; Beushausen, H.-D.; Dehn, F. (Eds.) et al Concrete Repair, Rehabilitation and Retrofitting II (2009)

The efficiency of the composite repair system is usually evaluated through semi-destructive test: pull-off test. But some difficulties can also be induced by the eccentricity of the load application, due ... [more ▼]

The efficiency of the composite repair system is usually evaluated through semi-destructive test: pull-off test. But some difficulties can also be induced by the eccentricity of the load application, due to incorrect placement of the test device. The paper presents the results of a research project and the impact of incorrect design on tensile strength values. According to results of laboratory experiments and modelling, it can be observed that, if there is an influence of 2o and 4o angle of inclination on pull-off bond strength, it is however not statistically significant: the decrease of pull-off strength is usually no larger than 8% for 2o [less ▲]

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See detailBiodiversité végétale et pressions anthropiques dans la forêt marécageuse de Lokoli (Bénin).
Mama, A; Adomou, A; Dan, C et al

Poster (2009)

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See detailModal analysis of a nonlinear structure with cyclic symmetry
Peeters, Maxime ULg; Viguié, Régis ULg; Kerschen, Gaëtan ULg et al

in 27th International Modal Analysis Conference, Orlando, 2009 (2009)

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See detailNetwork organisation : the impact of dominant paradigms ?
Absil, Gaëtan ULg; Demarteau, Michel

in Archives of Public Health (2009), 67(Supplement 2), 66-67

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See detailLes clauses exonératoires ou limitatives de responsabilité insérées dans les conditions générales: leurre ou évidence?
Kohl, Benoît ULg; Grisard, Delphine ULg

in Les conditions générales - Questions particulières (2009)

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See detailEvaluation of elbow biomechanical models using data fusion: Application to elbow flexion
Leboucher, Julien; Schwartz, Cédric ULg; Brochard, Sylvain et al

in Gait & Posture (2009), 30(2009), 60-61

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See detailBiomaterial Surface Characteristics Modulate the Outcome of Bone Regeneration around Endosseous Oral Implants: In Silico Modeling
Amor, Nadya; Geris, Liesbet ULg; Vander Sloten, Jos et al

in Miller, Karol; Nielsen, Poul M.F. (Eds.) MICCAI 2009 Workshop Proceedings (2009)

Experimental investigations have demonstrated the importance of platelets and their activation for bone regeneration around oral implants. This study aimed to numerically demonstrate the key role of ... [more ▼]

Experimental investigations have demonstrated the importance of platelets and their activation for bone regeneration around oral implants. This study aimed to numerically demonstrate the key role of activated platelets which is controlled by implant surface characteristics. The cellular activities involved in the process of peri-implant endosseous healing can be represented by migration, proliferation, differentiation, removal, extracellular matrix synthesis and degradation, and growth factor production/release and decay. These activities are described by a system of highly coupled non-linear partial differential equations of taxis–diffusion–reaction type. Moreover, cell–biomaterial interactions were treated by including surface-specific model parameters. A well-designed in vivo model that looked at healing around oral implants with different surface properties was selected from literature to validate the results. Numerical simulations agreed well with the experimentally observed healing response and demonstrated that platelet-related model parameters, which were dependent on implant surface characteristics, modulate the pattern of healing. [less ▲]

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See detailRisk factors for major joints heterotopic ossification after thermal injury
REMY, Christophe ULg; COLMAN, David ULg; LEDOUX, Didier ULg et al

in Burns : Journal of the International Society for Burn Injuries (2009)

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See detailWave-particle duality in a two atom interferometer
Schilling, U.; Thiel, C.; Bastin, Thierry ULg et al

Poster (2009)

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See detailRythmes biologiques et comportement animal.
Poncin, Pascal ULg

Conference (2009)

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See detailPervichnoe rastcheplenie v verkhnepaleoliticheskoï industrii stoyanki Kulbulak (Uzbekistan)
Kolobova, K.A.; Flas, Damien ULg; Krivoshapkin, A.I. et al

in Derevianko, A.P.; Shunkov, M.V. (Eds.) The earliest human migrations in Eurasia (2009)

Detailed reference viewed: 18 (2 ULg)
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See detailPlant defense reactions stimulated following perception of Bacillus lipopeptides
Ongena, Marc ULg; Henry, G.; Jourdan, E. et al

Conference (2009)

Detailed reference viewed: 9 (1 ULg)
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See detailMorphodynamic incidences of the trepanning of the endokarst by solution pipes. Examples of chalk caves in Western Europe (France and Belgium)
Rodet, Joël; Willems, Luc ULg; Brown, Joël et al

in Contributed Papers Proceedings 15th International Congress of Speleology (2009)

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See detailEtude comparative des modèles sédimentaires et diagénétiques entre les versants nord et sud des Pyrénéens de la plate-forme carbonatée du Paléocène moyen.
Loisy, Corinne; Cerepi, Adrian; Da Silva, Anne-Christine ULg et al

in 12e Congrès Français de Sédimentologie – Rennes 2009 – Livre des résumés, Publ. ASF, n°64 (2009)

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See detailHigh-throughput methodology applied to screening of carbohydrate-based surfactant interfacial properties for colloidal system formulations
Razafindralambo, Hary ULg; Blecker, Christophe ULg; Deroanne et al

Poster (2009)

Carbohydrate-based surfactants (CBS) constitute an attractive class of amphiphilic molecules owing to their structural diversity generating a wide range of properties which could be developed in food and ... [more ▼]

Carbohydrate-based surfactants (CBS) constitute an attractive class of amphiphilic molecules owing to their structural diversity generating a wide range of properties which could be developed in food and non-food applications. Based on many functional groups of the carbohydrate part, it is possible to design multiple amphiphilic structures of CBS varying in the hydrophilic head groups (mono-, oligo-, or polysaccharides), hydrophobic tail (mono-, di-, tricatenar) but also in the linker/spacer between them. The main structures of CBS include mono- and bicatenar glycolipids, bolaforms, and gemini. Moreover, CBS compounds can be produced from the most abundant renewable materials allowing large product concept possibilities. Among general properties of surfactants, interfacial properties molecules occupy a fundamental key role for colloidal system formulations since they control most of technological aptitudes required for forming and stabilizing food, cosmetic, agrochemical, detergent, and pharmaceutical products. High-throughput methodology applied to screening of CBS interfacial properties appears crucial for achieving optimum formulations of colloidal systems like foams and emulsions for which small amounts of single or mix surface-active agents are often needed and numerous physical and chemical parameters are involved. This general approach may be applied to any amphiphilic molecules produced from other renewable resources of surface-active compounds like micro-organisms and by direct extraction from vegetable materials. One of the key factors for the development of this methodology is the use of automated instrument systems in laboratory scale which are still lacking in this field compared to those existing in the analytical chemistry and biochemistry areas. [less ▲]

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See detailIntérêt du suivi sportif à la piste des chevaux d’endurance dans la détection des problèmes subcliniques
Fraipont, Audrey ULg; Van Erck, Emmanuelle; Art, Tatiana ULg et al

in 35ème Journée de la Recherche équine (2009)

The aim of this study was to evaluate a field exercise test specifically designed for endurance horses and to determine the relevant parameters allowing discrimination between healthy horses (H) and ... [more ▼]

The aim of this study was to evaluate a field exercise test specifically designed for endurance horses and to determine the relevant parameters allowing discrimination between healthy horses (H) and horses presenting subclinical disorders (SP). Twenty four endurance horses underwent blood analyses, general examination and special exams to define a posteriori 2 groups: group H composed of healthy horses (n=12) and group SP included horses presenting subclinical disorders (n=12). The exercise test consisted of a warm-up followed by 3 gallop steps (27 km, 1.5km, 1.5km) at incremental speed. Lactates were measured after each step, an ECG was recorded during effort and recovery, speed was monitored by a GPS. Significant differences were observed between H and SP groups for VLA4, V160 and heart rate during recovery with better values for H horses. These results demonstrate the pertinence of a medical athletic follow-up in endurance horses: this field exercise test is easily achievable and allows the detection of subclinical disorders which would otherwise remain unsuspected by the riders. [less ▲]

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See detailLocalization of Nopp140 within mammalian cells during interphase and mitosis
Thiry, Marc ULg; Cheutin, Thierry; Lamaye, Françoise et al

Poster (2009)

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See detailDéfense et illustration de l'analyse des discours universitaires
Defays, Jean-Marc ULg

in Defays, Jean-Marc; Englebert, Annick; Pollet, Marie-Christine (Eds.) et al Principes et typologie des discours universitaires (2009)

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See detailA comparison of the physical activity promotion strategies adopted by selected secondary schools in three European regions
Van Hoye, Aurélie ULg; Motter, Pascale ULg; Cloes, Marc ULg

in Rossi, T.; Hay, P.; McCuaig, L. (Eds.) et al Proceedings of the 2008 AIESEP World Congress «Sport pedagogy research, policy and practice: International perspectives in physical education and sports coaching. North meets South, East meets West» (2009)

The concept of the ‘active school’ emerged a decade ago as the role with increasing recognition of the role of schools in the promotion of physical activity. The purpose of this paper is to present the ... [more ▼]

The concept of the ‘active school’ emerged a decade ago as the role with increasing recognition of the role of schools in the promotion of physical activity. The purpose of this paper is to present the findings of a study which, drawing on Cale’s ‘Active School’ model, aimed to compare the nature and extent of physical activity promotion in secondary schools in three European regions. In so doing, it aimed to establish whether there were cultural differences in the strategies and approaches adopted by schools. [less ▲]

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See detailExperimental investigation of flow and deposit patterns in rectangular shallow reservoirs: preliminary analysis
Dufresne, Matthieu ULg; Dewals, Benjamin ULg; Erpicum, Sébastien ULg et al

in Proceedings International Workshop on Environmental Hydraulics: Theoretical, Experimental and Computational Solutions (2009)

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See detailPreliminary studies of development of oral pharmaceutical dosage forms contained extracts of Artemisia annua cultivated in Benin
Zime Diawara, Hermine; Gbaguidi, Fernand; Gbenou, Joachim et al

in Proceedings of 2nd PharmSci Fair (2009)

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See detailSensitivity analysis of a 3D diffusive drying model
Janas, Sébastien ULg; Deroanne Claude; Bera, François ULg

Poster (2009)

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See detailOne step closer to a cook book method for dioxin analysis part 2: Analysis of food samples
Focant, Jean-François ULg; Shirkhan, H.; Patterson, Donald G. et al

in Organohalogen Compounds (2009), 71

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See detailNormalizing speech transcriptions for Natural Language Processing
Dister, Anne; Constant, Matthieu; Purnelle, Gérald ULg

in Proceedings of the 3rd International Conference on Spoken Communication (GSCP'09) (2009)

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See detailEffect of breed on Doppler echocardiographic measurements in equids
Al Haidar, A; Sandersen, Charlotte ULg; Van Erck, Emmanuelle et al

in Proceedings of the 3rd Annual Congress of the European College of Equine Internal Medicine (ECEIM) (2009)

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See detailLe Dévonien: des mousses à l'arbre.
Gerrienne, Philippe ULg

Conference (2009)

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See detailImpact de l’action anthropique sur la diversité floristique et structurale de la forêt de Rumonge au Burundi
Hakizimana, P; Lejoly, J; Habonimana, B et al

Poster (2009)

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See detailYlang-ylang (Cananga odorata (Lam.) Hook. & Thoms. var. genuina) essential oils from Comoros Islands: characterization and variability
Benini, Céline ULg; Wathelet, Jean-Paul ULg; du Jardin, Patrick ULg et al

Poster (2009)

The Union of the Comoros is the world’s biggest producer of ylang-ylang essential oils. Comorian ylang-ylang also provides the most valuable essential oil that can be found on international market. This ... [more ▼]

The Union of the Comoros is the world’s biggest producer of ylang-ylang essential oils. Comorian ylang-ylang also provides the most valuable essential oil that can be found on international market. This product represents a high percentage of Comoros’ annual currency. Ylang-ylang essential oil is obtained by fractionned hydrodistillation or steam distillation of Cananga odorata fresh flowers. This oil is commercialized in five different quality grades (extra S; extra; I; II; III) which possess their own physicochemical properties. [less ▲]

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See detailThe contribution of macroalgae to the assessment of the ecological quality of the rivers in Wallonia based on macrophytes indicator values in the British and French approaches.
Sossey Alaoui, Khadija ULg; Galoux, Daniel; Rosillon, Françis ULg

Poster (2009)

In accordance with the water Framework Directive (WFD, European Parliament & The Council of the European Union, 2000) defining the overall ecological status of rivers, many hundred sites were analysed in ... [more ▼]

In accordance with the water Framework Directive (WFD, European Parliament & The Council of the European Union, 2000) defining the overall ecological status of rivers, many hundred sites were analysed in the Walloon network. Within each sample, macroalgae data were gathered at species/or at genus level and the main water quality parameters were collected several times per year from 2005 to 2009. <br /><br />Seventeen species and genera cited in the French and English lists of macrophyte methods used to assess the ecological quality of rivers were considered. Within these sites, the ratio of the macroalgae among the contributory species was examined and the impact of these on the final scores of the River Macrophytes Nutrient index (United Kingdom, Wilby et al.,2006) and the biological macrophytic index in rivers (France, Haury et al., 2006) was analysed.At the same time, a ranking of these macroalgae along a trophy gradient has been established thanks to a principal component analysis of the physico-chemical parameters and a weighting of the species presence in a given waterbody by its abundance.The relationships between macroalgae scores and those found in France and in United Kingdom were studied using the Spearman rank correlation coefficient. <br /><br />Literature: <br /><br />European Parliament & The Council of the European Union, 2000. Directive 2000/60/EC of the European Parliament and of the Council establishing a framework for the Community action in the field of water policy. Official Journal of the European Communities 327: 1-72.Haury, J., M.-C. Peltre, M. Trémolières, J. Barbe, G. Thiébaut, I. Bernez, H. Daniel, P. Chatenet, G. Haan-Archipof, S. Muller, A. Dutartre, C. Laplace-Treyture, A. Cazaubon & E. Lambert-Servien, 2006. A new method to assess water trophy and organic pollution – the Macrophyte Biological Index for Rivers (IBMR): its application to different types of river and pollution. Hydrobiologia 570: 153-158. Willby, N., J. Pitt & G. Phillips, 2006. Summary of approach used in LEAFPACS for defining ecological quality of rivers and lakes using macrophyte composition. Draft Report January 2006. [less ▲]

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See detailLa problématique des méduses sur le plateau continental Ouest Corse, série de données et modélisation
Hecq, Jean-Henri ULg; Goffart, Anne ULg; Collignon, Amandine ULg et al

Conference (2009)

Depuis une dizaine d’années, les eaux côtières corses sont envahies les méduses et en particulier par les Pelagia noctiluca qui présentent une nuisance pour les eaux de baignade, les installations ... [more ▼]

Depuis une dizaine d’années, les eaux côtières corses sont envahies les méduses et en particulier par les Pelagia noctiluca qui présentent une nuisance pour les eaux de baignade, les installations aquacoles et hydrauliques côtières, interfèrent avec la pêche, colmatent les filets et entrent en compétition avec les poissons pour la nourriture. Leurs apparitions dans les eaux côtières sont généralement fortuites, discontinues dans les temps et dans l’espace et souvent sous forme d’essaims. Dans le cadre du programme MEDUSES, subsidié par l’Agence de l’Eau RMC, des observations visuelles directes et des comptages de Pelagia effectués depuis 2003 à partir du quai du port de STARESO montrent une augmentation graduelle de leur abondance de 2004 à 2005 suivie par une augmentation dramatique en 2006 puis une diminution significative les étés 2007 et 2008. La prolifération de Pelagia en 2006 succède à des biomasses particulièrement élevées de mésozooplancton en 2005. On peut émettre l’hypothèse que l’abondance exceptionnelle des proies planctoniques est une des causes de la prolifération. Les Pelagia vivent en essaims dont deux types sont observés en Baie de Calvi: des essaims passifs et des essaims actifs. Les essaims passifs observés dans le port de STARESO contiennent des individus généralement dégradés (perte des tentacules, du manubrium,..), voire moribonds mais qui restent urticants. Parfois réduits à la seule ombrelle, ils se déplacent peu et s’accumulent en grand nombre (parfois plus de 200 par m2), bord à bord, en essaims passifs limités aux trois premiers mètres de la surface. Ces essaims subissent une prédation active par de nombreux poissons sparidés (bogues, sars,...). Ils disparaissent en quelques heures du fait de cette prédation ou par sédimentation massive des animaux morts. Par contre, dans les eaux plus au large, nos mesures in situ de la distribution spatiale de Pelagia noctiluca montrent que durant les pics de 2006, de nombreux organismes sont présents à distance de la côte où ils forment des essaims actifs de 200 m de long et 50 m de large situés entre 10 à 60 m. Dans ces essaims actifs, on observe de 5 à 10 individus par m3. Ceux-ci sont équidistants et nagent activement avec les tentacules étendus, capturant la nourriture. Dans certains cas, des individus moribonds partiellement détruits ou à la fin de leur cycle biologique échappent des essaims actifs et dérivent passivement à la surface, sous l’action du vent et des mouvements de l’eau, vers les zones côtières. Entre ces deux types extrêmes d’essaims, divers cas intermédiaires existent. [less ▲]

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See detailPhysicochemical characterization of fat blends related to margarine formulation
Danthine, Sabine ULg; Fernando Munoz, J; Cavillot, V et al

Poster (2009)

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See detailA comparison between pulse contour analysis and Doppler echocardiographic measurements of cardiac output in awake horses
Guidi, E; Amory, Hélène ULg; Borde, Laura ULg et al

in In Proceedings of the 3rd Annual Congress of the European College of Equine Internal Medicine (ECEIM) (2009)

Detailed reference viewed: 9 (3 ULg)
See detailExtraktion in hochviskosen Systemen
Kröckel, J; Adinata, D; Pfennig, Andreas ULg

Conference (2009)

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See detailDevelopment of an original approach to evaluate effects of surfactants, biomass and pollutants on the scaling-up of a two-phase partitioning bioreactor
Aldric, Jean-Marc ULg

(2009)

BACKGROUND: Two-phase partitioning bioreactors (TPPBs) are considered as a new technology for xenobiotic degradation in gaseous effluents. However, there is still a need for more knowledge on how to ... [more ▼]

BACKGROUND: Two-phase partitioning bioreactors (TPPBs) are considered as a new technology for xenobiotic degradation in gaseous effluents. However, there is still a need for more knowledge on how to design and scale-up TPPBs. The partitioning of the two phases remains a misunderstood way of research. In particular, the impact of pollutant (isopropylbenzene), biomass and surfactant extract needs to be better evaluated. RESULTS:. An adaptated scale-down apparatus has been developed in order to quantify the speed of phase partitioning (SPP) into a plug flow section. Firstly, it was shown that isopropylbenzene (IPB) doesn’t destabilize more significantly the system. Secondly, respectively 0.5 g.L-1 and 0.05 g.L-1 of biomass and surfactant extract, separately or in mixture, were sufficient to ensure the stability of the two-phase system. Finally, a 100 m3 limit of scaling-up was suggested on the basis of the circulation time comparison. CONCLUSION: The scaling-up of an aqueous/silicone-oil TPPB was found to be definitely conceivable when the presence of biotic compounds were considered. However, further considerations are needed to verify our assumptions, in particular by taking into account the velocity field pattern in full-scale bioreactors and reproduce it in lab-scale apparatus. [less ▲]

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See detailResemantisation in varieties of Dutch
De Vos, Lien ULg

Conference (2009)

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See detailEthik materieller Lebensgrundlagen
Fayyaz, Sara; Hillerbrand, Rafaela; Pfennig, Andreas ULg

Conference (2009)

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See detailÀ propos de la propagation des formes léonardesques dans les aires septentrionales de l’Europe. La diffusion de la "Cène" de Léonard de Vinci dans la peinture flamande du XVIe siècle
Fagnart, Laure ULg

in Costa, Sandra; Poullain, Christine; Tarpin, Michel (Eds.) et al L’appel de l’Italie. Les échanges artistiques en Europe à l’époque moderne. Les Français et les Flamands en Italie (2009)

Contribution à l’histoire de la diffusion des œuvres de Léonard de Vinci dans les anciens Pays-Bas à la Renaissance, cet article analyse quelques œuvres flamandes du XVIe siècle qui présentent des ... [more ▼]

Contribution à l’histoire de la diffusion des œuvres de Léonard de Vinci dans les anciens Pays-Bas à la Renaissance, cet article analyse quelques œuvres flamandes du XVIe siècle qui présentent des citations à la "Cène" de Santa Maria delle Grazie, à savoir l’une des miniatures des "Heures de Hennessy", le polyptyque de Joos van Cleve, qui autrefois rehaussait l’autel de la chapelle Sainte-Anne de l’église Santa Maria della Pace à Gênes, et qui, aujourd’hui, est conservé au Musée du Louvre et les versions de la "Cène" de Pieter Coeck van Aelst. D’une part, nous montrons ce qui, dans cette grandiose peinture murale, a retenu l’attention des Flamands, d’autre part, nous nous interrogeons sur les intermédiaires qui ont permis aux artistes actifs dans le nord de l’Europe de découvrir le chef-d’œuvre milanais. [less ▲]

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See detailVascularisation of the equine menisci
De Busscher, V.; Maitre, D.; Busoni, Valeria ULg et al

Poster (2009)

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See detailGrain boundary effects in bulk colossal magneto resistive (CMR) manganites and manganite/insulator composites: electrical and magnetic properties
Vanderbemden, Philippe ULg; Vertruyen, Bénédicte ULg; Ausloos, Marcel ULg et al

in Journal of Optoelectronics and Advanced Materials [= JOAM] (2009), 11(9), 1115-1121

In the first part of this paper, we discuss the effects of grain boundaries on the properties of bulk colossal magnetoresistive (CMR) manganites We compare the electrical resistivity and AC magnetic ... [more ▼]

In the first part of this paper, we discuss the effects of grain boundaries on the properties of bulk colossal magnetoresistive (CMR) manganites We compare the electrical resistivity and AC magnetic susceptibility of perovskite La-Ca-Mn-O samples with the same nominal stoichiometry but differing in their microstructure (i) a single grain sample, (ii) a sample containing two grains and (iii) a polycrystalline sample Emphasis is placed on information that can be deduced from the measurements in each case In the second part of the paper, we report the data measured on composite samples containing a CMR phase (La-Ca-Mn-O) and an insulating phase (Mn3O4) The results are discussed in the framework of percolation theory We show how the grain boundaries affect the electrical properties of these materials, and we highlight the crucial role of geometric (demagnetization) effects on the resistance vs magnetic field measurements [less ▲]

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See detailEvolution of livelihood strategy and income of the households in the Coastal Sandy Area of Thua Thien Hue Province during the 2003-2008 period
Nguyen Dang, Hao; Lebailly, Philippe ULg; Pham Khanh, Tu

in Improving food crop productivity in the coastal sandy area of the Thua Thien Hue Province Central Vietnam : Vietnam-Belgium interuniversity project 2004-2009 (2009)

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See detailActive Learning using Mean Shift Optimization for Robot Grasping
Kroemer, Oliver; Detry, Renaud ULg; Piater, Justus ULg et al

in IEEE/RSJ International Conference on Intelligent Robots and Systems (2009)

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See detailAssociation between inflammatory airway disease, tracheal inflammation and respiratory function evaluated by impulse oscillometry
Richard, Eric ULg; Fortier, G.; Dupuis, Marie-Capucine ULg et al

in Tessier, Caroline; Gerber, Vincent (Eds.) Abstract book: 4th World Equine Airways Symposium (WEAS) (2009)

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See detailDo spiders capture attention in a bottom-up fashion and does fear have an impact?
Devue, Christel ULg; Belopolsky, Artem; Theeuwes, Jan

Conference (2009)

Fear-related stimuli (e.g. spiders) seem to be prioritized during visual selection when they are actively searched for. This is especially true if the observers fear them. It remains unclear whether such ... [more ▼]

Fear-related stimuli (e.g. spiders) seem to be prioritized during visual selection when they are actively searched for. This is especially true if the observers fear them. It remains unclear whether such stimuli capture attention automatically when they are task-irrelevant. To answer that question, we used the additional singleton paradigm (Theeuwes, 1992) in which participants searched for a shape singleton (a circle among diamonds) while a fear-related stimulus (a spider) or a fear-unrelated stimulus (a butterfly) was also present in the display. To assess whether fear affects the extent of a possible bottom-up capture, we compared performance of participants that scored high or low on the Fear of Spiders Questionnaire (Szymanski & O'Donohue, 1995). Results showed that both types of task-irrelevant animals captured covert attention. Importantly, both types of animals produced larger interference in high-fear than in low-fear participants. This study suggests that fear as an individual characteristic influences bottom-up capture. [less ▲]

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See detailThermal manipulations of broiler embryos during late incubation and their immediate and long-lasting effects
Willemsen, H.; Everaert, Nadia ULg; Tona, K. et al

Conference (2009)

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See detailOn the use of posture verbs by French-speaking learners of Dutch : a corpus-based study.
Lemmens, Maarten; Perrez, Julien ULg

Conference (2009)

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See detailLa négociation immobilière après l'arrêt de la cour d'appel de Mons du 15 juin 2009
Kohl, Benoît ULg

in Leleu, Yves-Henri (Ed.) Chroniques Notariales (2009)

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See detailLong Term Stability Of Metal Oxide-Based Gas Sensors For E-nose Environmental Applications: an overview
Romain, Anne-Claude ULg; Nicolas, Jacques ULg

in Pardo, Matteo; Sberveglieri, Giorgio (Eds.) OLFACTION AND ELECTRONIC NOSE: Proceedings of the 13th International Symposium on Olfaction and Electronic Nose (2009)

The e-nose technology has enormous potentialities for in site monitoring of malodors. However a number of limitations are associated with the properties of chemical sensors, the performances of the signal ... [more ▼]

The e-nose technology has enormous potentialities for in site monitoring of malodors. However a number of limitations are associated with the properties of chemical sensors, the performances of the signal processing and the realistic operation conditions of environmental field. From the experience of the research group in the field, the metal oxide based gas sensors (Figaro type) are until now the best chemical sensors for long term application, more than one year of continuous working in the field. To be usable for malodors measurement in the field, the e-nose has to deal with the lack of long term stability of these sensors. The drift and the sensors replacement have to be considered. In order to appraise the time evolution of the sensors and the effect on the results of an electronic nose, experimentation has been performed during three years on two identical sensor arrays. The two arrays contain the same six Figaro sensors and are in the same sensor chamber of the e-nose system. Both arrays have worked continuously during three years without break. [less ▲]

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See detailMacrophyte biological index for rivers (MBIR) application for an ecological assessment of walloon rivers, prelilminary investigations.
Sossey Alaoui, Khadija ULg; Galoux, D.; Rosillon, Françis ULg

Conference (2009)

Samples were collected from 45 sites along the Walloon river network in 2007, in accordance with the Water Framework Directive (WFD, European Union, 2000), used to define the overall ecological status of ... [more ▼]

Samples were collected from 45 sites along the Walloon river network in 2007, in accordance with the Water Framework Directive (WFD, European Union, 2000), used to define the overall ecological status of rivers. Within each collected sample, macrophyte data were gathered at species level and the main water quality parameters were analyzed. This involved the use of two approaches: firstly, methods of ordination and classification (Principal Component Analysis and Multiple Factorial Analysis) and secondly, aquatic macrophyte community indexes. The Macrophyte Biological Index for Rivers (MBIR) was used to define the ecological status of the macrophyte community in response to eutrophication pressure. Four trophic qualities were detected in all the monitored stations: 56% of the sites showed a good trophic quality, with the Ardennes region in the leading position and only 2% of the sites showed a poor trophic quality. A Multiple Factorial Analysis (MFA) made it possible to regroup the species according to their ecological affinities and to specify their indicator values in relation to some abiotic parameters. As a result, a rivers typology was outlined based on this analysis. The dendrogram of the Hierarchical Cluster Analysis (HCA) gave three clusters determined by active variables of each compartment that defined functional parts of the Walloon network: Chiloscyphus polyanthos (L.) Corda, Rhynchostegium riparioides(Hedw.)C.Jens., Fontinalis squamosa(Hedw) and Ranunculus penicillatus (Dum.)Bb. showed an oligotrophic status and low mineralization in the Ardennes (GI), while P. pectinatus(Linne), Cladophora glomerata(Linnaeus)proved to be found more often in eutrophicated waters in the Region limoneuse (GIII). Pellia endvifolia (Dicks.)Dum, Fissidens crassipes(Br.Eur);Cinclidotus riparius (Web. & Mohr.) appeared in the Condroz and Famenne, rivers characterized by a high concentration of nitrogen (N-35. NO3-) (GII). [less ▲]

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See detailEtude sur modèle physique des capacités hydrauliques de l’évacuateur de crues du barrage de la Petite Rhue (Cantal - 15)
Erpicum, Sébastien ULg; Dewals, Benjamin ULg; Pirotton, Michel ULg et al

in Actes du Colloque Dimensionnement et Fonctionnement des Evacuateurs de crues (2009)

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See detailFigure della violenza nella tradizione arturiana in prosa
Morato, Nicola ULg

in Praloran, Marco; Romano, Serena; Bucchi, Gabriele (Eds.) et al Figura e racconto. Narrazione letteraria e narrazione figurativa in Italia dall'antichità al Primo Rinascimento. Atti del convegno di studi (Lausanne 8-10 novembre 2005) (2009)

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See detailPotentiel d'utilisation de régime à valeur OEB negative : essai croissance-finition de taurillons BBB.
Decruyenaere, Virginie; Bonnet, M.; Poncelet, Céline ULg et al

in Les filières aniales dans la tourmente : produire plus et mieux avec moins (2009)

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See detailGerminal centre innervation of bovine and human tonsils related to prion diseases.
Defaweux, Valérie ULg; Dorban, Gauthier; Antoine, Nadine ULg et al

in Brain, Behavior & Immunity (2009), 23(1), 10

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See detailPatient specific model of the cardiovascular system during septic shock
Desaive, Thomas ULg; Chase, J. G.; Lambermont, Bernard ULg et al

in Intensive Care Medicine (2009), 35(suppl. 1), 80

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See detailReaching the schools
Nazé, Yaël ULg

Poster (2009)

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See detailSmall Scale Solar ORC system for distributed power
Orosz, Matthew; Mueller, Amy; Quoilin, Sylvain ULg et al

(2009)

A solar thermal organic Rankine cycle (ORC) can provide affordable energy supplies in remote regions. The advent of low-cost medium temperature parabolic trough collectors and ORC technology taking ... [more ▼]

A solar thermal organic Rankine cycle (ORC) can provide affordable energy supplies in remote regions. The advent of low-cost medium temperature parabolic trough collectors and ORC technology taking advantage of mass produced fluid machinery from HVAC industries are enabling developments for the production of small scale autonomous power generation units. Construction and testing of this type of system is discussed, including benchmarking of scrolls expanders (up to 75% isentropic effieiency) and the field testing of solar collectors (50% thermal efficiency at 150°C operating temperatures) with a nominal cost of $80 m-2. These results have led to the construction of a full-scale 3kW solar ORC power system designed to support a rural health clinic in Lesotho in southern Africa. [less ▲]

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See detailLe cortisol salivaire comme indicateur du bien-être chez la truie gestante lors de regroupement.
Wavreille, José; Planchon, V.; Remience, Virginie et al

in 41èmes Journées de la Recherche porcine (2009)

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See detailOrigin and early evolution of life
Javaux, Emmanuelle ULg

Conference (2009)

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See detailLa place de la délinquance dans le style de vie de consommateurs de drogue
Born, Michel ULg; Pirenne, Chantal

(2009)

Detailed reference viewed: 51 (9 ULg)
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See detailSmart Sensors and MEMS for all over Industrial Application Niches
Saint-Mard, Michel ULg; Heusdens, Bruno ULg; Haudry, Fabrice ULg et al

in Smart Systems Integration (2009)

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See detailOn the Recognizability of Self-Generating Sets
Kärki, Tomi ULg; Lacroix, Anne ULg; Rigo, Michel ULg

in Lecture Notes in Computer Science (2009), 5734

Let I be a finite set of integers and F be a finite set of maps of the form n->k_i n + l_i with integer coefficients. For an integer base k>=2, we study the k-recognizability of the minimal set X of ... [more ▼]

Let I be a finite set of integers and F be a finite set of maps of the form n->k_i n + l_i with integer coefficients. For an integer base k>=2, we study the k-recognizability of the minimal set X of integers containing I and satisfying f(X)\subseteq X for all f in F. In particular, solving a conjecture of Allouche, Shallit and Skordev, we show under some technical conditions that if two of the constants k_i are multiplicatively independent, then X is not k-recognizable for any k>=2. [less ▲]

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See detailAn analysis of the random error affecting CO2 fluxes measured by eddy covariance
Laffineur, Quentin ULg; Heinesch, Bernard ULg; Aubinet, Marc ULg

Poster (2009)

This study focuses on random errors associated with eddy covariance flux measurements. This error is heteroscedastic, increases linearly with the flux magnitude and the error on CO2 flux decreases with ... [more ▼]

This study focuses on random errors associated with eddy covariance flux measurements. This error is heteroscedastic, increases linearly with the flux magnitude and the error on CO2 flux decreases with increasing wind speed. As random errors accumulate in quadrature, they are less critical than systematic errors as far as flux sums are concerned. On the other hand it may affect significantly half-hour data and pose problem for modelling or analysis of flux response to environmental parameters. It is therefore useful to characterize the site and the specific conditions under which the random error is the most important. The random error on CO2 flux was computed at two sites, one cropland and one forested site, by using the daily differencing approach (DDA, Hollinger and Richardson 2005). Relationships with flux and wind speed were compared between different periods (day vs. night, growing season vs. rest of the year) and for different flux computation methods. First, an increase of random error with decreasing wind speed was observed at low speed. This effect was not observed during the rest period at the cropland site and disappears when a high-pass filtering is applied to the data. It may be explained by two processes: on one hand, the below canopy air layer is less efficiently mixed which can create large flux variations when CO2 sources and sinks are separated. On the other hand, mesoscale motions may exceed small-scale turbulence at low wind speed. At similar wind speeds, the random error was lower at the cropland than at the forested site, which can be due to either process: indeed, at the cropland site, the distance between CO2 sources and sinks is smaller which reduce the low mixing effect but the site is also more flat and homogeneous which reduce the impact of mesoscale movements. The possibility of mesoscale movement impact is supported by the fact that the effect disappears when applying a high pass filtering. The random error was also found sensitive to the computational method: in particular it is larger when the flux is computed using the block average rather than the running mean, it increases when storage is taken into account and decreases when data are filtered by applying stationarity screening or u* filtering. [less ▲]

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See detailEvaluation of the endorcine disrupting chemicals contamination in the North Sea porpoise population using in vitro assays
Didimo Imazaki, Pedro Henrique ULg; Brose, François ULg; Van Der Heiden, Edwige ULg et al

Poster (2009)

During the last decades, the production endocrine disrupting chemicals reached such levels that they are now spread all over nature. They are known to be very slowly degraded, decreasing the environmental ... [more ▼]

During the last decades, the production endocrine disrupting chemicals reached such levels that they are now spread all over nature. They are known to be very slowly degraded, decreasing the environmental quality and posing ecological risks. Marine mammals inhabiting polluted environments accumulate high levels of these chemicals, so they can be considered good indicators of marine pollution. Thirteen major organochloride pollutants were chosen to make subject of this study: o,p’-DDD; p,p’-DDD; p,p’-DDE; o,p’-DDT; p,p’-DDT; HCB; α-HCH; β-HCH; γ-HCH; δ-HCH; PCB 138; PCB 153 and PCB 180. All these chemicals will have their endocrine disrupting effects characterized individually and collectively by report gene expression assays. The MCF7-ERE cells used in these assays were produced in the Molecular Biology and Genetic Engineering Laboratory of the University of Liège and are originated from a human mammary carcinoma. They carry a gene expressing the synthesis of luciferase and controlled by oestrogen receptors. Then, the thirteen chemicals will be searched in the blubber tissues of porpoises by the use of gas chromatography-mass spectrometry. The blubber samples will also have their endocrine disrupting effect characterized. For the moment, the estrogenic effects of the HCH isomers were put in evidence. The next steps of this work must be soon accomplished. It is expected a great level of these compounds to be found in the samples. On the other hand, their endocrine disrupting effects and how they act in agonist, antagonist and synergist ways are subject that still needs to be cleared. [less ▲]

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See detailIdentification and Quantification of Metabolites in a Human Plasma Standard Reference Material by Multiple Mass Spectrometry Methods
Dodder, Nathan; Barak, Ruth; Eppe, Gauthier ULg et al

in ASMS Conference on Mass Spectrometry and Allied topics (2009)

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See detailISEIA, a Belgian non-native species assessment protocol
Branquart, Etienne; Verreyken, Hugo; Vanderhoeven, Sonia ULg et al

in Seghers; Branquart (Eds.) Science Facing Aliens Proceedings of a Scientific Meeting onInvasive Alien Species (2009)

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See detailAdjoint Equations and Error Measure in Radiative Heat Transfer with Diffuse Reflection
Vueghs, Pierre ULg; Rochus, Pierre ULg

in Proceedings of the ASME 2009 Heat Transfer Summer Conference HT2009 (2009)

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See detailTowards a system of territorial intelligence: geographical indicators and data for European actors
Breuer, Christophe ULg; Devillet, Guénaël ULg

in International Conference of Territorial Information. Papers on Tools and Methods of Territorial Intelligence. (2009)

This article deals with the realization of a territorial information gate for the European actors. It defines the sources of territorial information and the files allowing the cartography of the ... [more ▼]

This article deals with the realization of a territorial information gate for the European actors. It defines the sources of territorial information and the files allowing the cartography of the administrative and statistical cuttings. The acquisition cost of information is also putted forward. It establishes the link between the technical realization of an interactive interface of webmapping and the problem of the data and metadata management. [less ▲]

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