References of "Scientific congresses and symposiums"
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See detailLes expositions d'art sonore: désarçonnantes?
Eloy, Céline ULg

Conference (2009)

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See detailSeasonal variability of carbon dioxide and methane in the rivers and lagoons of Ivory Coast (West Africa)
Koné, Y. J. M.; Abril, G.; Delille, Bruno ULg et al

Poster (2009)

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See detailThe obese dog and its owner : a method to implement a weight loss program using a concept map
Diez, Marianne ULg; Picavet, Philippe; Istasse, Louis ULg et al

in Mussa, P. P.; Nery, J.; Sciavone, A. (Eds.) et al Congress Proceedings 13t h Congress of the ESVCN (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 detailInterstitial macrophages are essential for maintaining immune homeostasis in the lung
Bedoret, Denis; Wallemacq, Hugues ULg; Marichal, Thomas ULg et al

in Proceedings of The Allergy & Asthma Symposium: Bridging Innate and Adaptive Immunity (2009)

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See detailSTFT-based spectral analysis of urban waterworks leakage detection
Lay-Ekuakille, Aimé; Vendramin, Giuseppe; Trotta, Amerigo et al

in XIX IMEKO World Congress Proceedings (2009)

Water is an essential good for human being necessity. It must be protected against pollution and useless leakage. Urban waterworks is a strategic infrastructure to be managed with particular attention and ... [more ▼]

Water is an essential good for human being necessity. It must be protected against pollution and useless leakage. Urban waterworks is a strategic infrastructure to be managed with particular attention and care so that users must be satisfied. Different techniques are used to detect leaks from waterworks, specifically from pipelines carrying water. Among them, spectral analysis is very interesting to apply amid problems related to the pipeline section. This paper presents an application of STFT (short-term Fourier transform) technique for identifying urban waterworks leaks; STFT technique is usually used in processing speech. For the purposes of this research, a specific pipeline plant has been build in other to feature a real case. The pipeline section is almost one inch; the adopted section makes the research very interesting since spectral analysis, based essentially on FFT, is generally used for section greater than 20 cm. [less ▲]

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See detailUniversal applicability of Total Error for the validation of bioanalytical methods
Rozet, Eric ULg; Boulanger, Bruno ULg; Rudaz, S. et al

Conference (2009)

An innovative universal strategy using Total Error is thus proposed to decide about the method’s validity that controls the risk of accepting an unsuitable assay together with the ability to predict the ... [more ▼]

An innovative universal strategy using Total Error is thus proposed to decide about the method’s validity that controls the risk of accepting an unsuitable assay together with the ability to predict the reliability of future results. Several examples of applications of this validation methodology to various types of assays [LC-MS, ELISA, Bio-Assays] will be presented. [less ▲]

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See detailPenser les pratiques après C.Brandi. Vers une praxéologie et axiologie des restaurations en art contemporain.
Verbeeck, Muriel ULg

in Art d’aujourd’hui, patrimoine de demain, Actes du colloque SFIIC-INP (2009)

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See detailPlant and their soil environment
Delaplace, Pierre ULg

Conference (2009)

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See detailStability-activity relationships in natively unstable proteins
Feller, Georges ULg

Conference (2009)

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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 detailLe supériorat au féminin au temps de la Réforme catholique : conception et exercice du pouvoir dans quelques couvents de religieuses à vœux solennels
Henneau, Marie-Elisabeth ULg

in Santinelli, Emmanuelle; Dubois-Nayt, Armel (Eds.) Femmes de pouvoir et pouvoir de femmes dans l’Europe occidentale médiévale et moderne (2009)

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See detailMapping of soil-sediment systems contaminations around a metal-ore smelter : The example of Cu in Lubumbashi (R.D.Congo).
Mpundu, Michel; Mukobo, Robert-Prince; Kaya Muyumba, Donato ULg et al

Poster (2009)

The Katanga is famous for its high richness in metal ores, mainly Cu- and Co-minerals. The ore treatments activities lead to metal spreading in the environment which do endanger the viability of ... [more ▼]

The Katanga is famous for its high richness in metal ores, mainly Cu- and Co-minerals. The ore treatments activities lead to metal spreading in the environment which do endanger the viability of ecosystems and human health. The contaminations of soils and sediments around the Gecamines smelter in Lubumbashi have been evaluated through a multi-scale approach. In the first stage, a reference system about the natural contents in soils has been implemented. The main units of the detailed (1:20 000) soil map have been characterized through field observations and laboratory determinations : acido-basic and organic status, particle size distribution, cationic exchange capacity, total contents in Al, Fe, Mn, Cu, Co, Cd, Pb, Zn. An exploratory mapping of soil contaminations (Cu, Co, Cd, Pb, Zn) centered on the Gecamines cheminey was then conducted as a second stage of the approach. Detailed investigations were finally performed in the Gecamines district where signs of soil degradation were the highest. The spatial continuity and the differenciation (C : C0+C ratio) of the studied parameters appeared weak. No clear effect of the dominant wind direction on the spatial distribution of the contaminants could be identified despite a clear degradation of the ecosystem in the area under dominant wind. However the detailed approach showed evidences of (i) significant wind deposits in the Gecamines district, (ii) and local man-made deposits but also (ii) important processes of redistribution in the landscape through erosion/sedimentation or anthropic activities. Our results point out the difficulty to identify the sources of contaminations in an urban environment and stress the need to have approaches with complementary levels of details. [less ▲]

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See detailFilière sucrière et valorisation des ressources au Maroc
Redani, Latifa ULg; Doukkali, M. Rachid; Lebailly, Philippe ULg

in IAV Hassan II (Ed.) Symposium international AGDUMED 2009 Agriculture durable en Méditerranée " Gestion intégrée des ressources en eau et en sol et durabilité des systèmes de cultures en zones méditerranéennes" (2009)

Accusées de non compétitives et d'une mauvaise valorisation des ressources, les cultures sucrières risquaient de disparaître du Maroc à cause de la dite politique d'ajustement structurel et de ... [more ▼]

Accusées de non compétitives et d'une mauvaise valorisation des ressources, les cultures sucrières risquaient de disparaître du Maroc à cause de la dite politique d'ajustement structurel et de libéralisation du secteur agricole. Le présente article analyse ces deux arguments et démontre qu'en plus des importantes distorsions sur le marché international, le calcul du coût des ressources intérieures ainsi que des indicateurs de valorisation des ressources donnent raison à l'Etat de n'avoir pas libéralisé totalement ces cultures et, plus particulièrement celle de la betterave à sucre. [less ▲]

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See detailA-type granite of the ferrobasaltic Sept Iles layered intrusion: a product of large-scale silicate liquid immiscibility
Charlier, Bernard ULg; Namur, Olivier ULg; Schiano, P. et al

in EOS : Transactions, American Geophysical Union (2009), 90(52), 14-06

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See detailSurveying activity-travel behavior in Flanders: Assessing the impact of the survey design
Cools, Mario ULg; Moons, Elke; Bellemans, Tom et al

in Macharis, C.; Turcksin, L. (Eds.) Proceedings of the BIVEC-GIBET Transport Research Day 2009, Part II (2009)

Ever since car ownership and car use started to increase in Western Europe and the USA, transportation planners attempted to model people’s travel behavior. In the context of the Feathers project a ... [more ▼]

Ever since car ownership and car use started to increase in Western Europe and the USA, transportation planners attempted to model people’s travel behavior. In the context of the Feathers project a dynamic activity-based travel demand framework is developed for Flanders. In this paper, the complete survey design of the data collection effort required for such dynamic activity-based model is discussed. A mixed survey design of using a PDA application on the one hand, and using traditional paper and pencil diaries on the other hand, turns out to be a very suitable way of collecting detailed information about planned and executed activity-travel behavior of households. The results show that no attrition effects are present, not on the number of out-of-home activities reported, nor on the number of trips reported. Moreover the survey mode (PDA versus paper and pencil) has no direct impact on the quantities investigated. Notwithstanding, it is essential for further analysis on the Feathers data to explicitly take into account mode effects because of two reasons. First, the effect of explanatory variables can be influenced by the survey mode. Second, the variance in the estimation of the quantity investigated can differ significantly. Heteroscedatisc linear regression models provide the required framework to explicitly take into account these mode effects. [less ▲]

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See detailRésolution du problème de contact mécanique frottant : méthode du lagrangien augmenté adapté
Bussetta, Philippe ULg; Marceau, Daniel; Ponthot, Jean-Philippe ULg

in Proceedings of “9ème Colloque National en Calcul des Structures (2009)

Cet article présente une nouvelle méthode de résolution du problème de contact mécanique frottant, celle du lagrangien augmenté adapté. Contrairement aux méthodes les plus utilisées (pénalisation et ... [more ▼]

Cet article présente une nouvelle méthode de résolution du problème de contact mécanique frottant, celle du lagrangien augmenté adapté. Contrairement aux méthodes les plus utilisées (pénalisation et lagrangien augmenté), l’utilisateur ne doit pas déterminer les valeurs des coefficients de pénalisation. Cette méthode est performante aussi bien avec des matériaux élastiques qu’élasto-plastiques. Le problème de Hertz est présenté. Cette méthode est au si utilisée dans le contexte multi-physique. [less ▲]

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See detailMarket area of intermodal rail-road container terminals embedded in a hub-and-spoke network
Limbourg, Sabine ULg

Conference (2009)

This paper presents a methodology able to compare road and rail-road intermodal market areas that takes the network structures, the operation costs and the location of the rail-road terminals into account ... [more ▼]

This paper presents a methodology able to compare road and rail-road intermodal market areas that takes the network structures, the operation costs and the location of the rail-road terminals into account.Aparticular way to model rail-road transport on hub-and-spoke networks is outlined and illustrated on the trans-European networks. The market area of an optimal eight hubs network configuration is presented both for the p-hub median and the p-hub centre problem. This is followed by a discussion about the evolution of the market area according to the number and locations of the implemented hubs. [less ▲]

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See detailSpur Gear Vibration Mitigation by Means of Energy Pumping
Scagliarini, Giorgio; Viguié, Régis ULg; Kerschen, Gaëtan ULg et al

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

The dynamic behaviour of a spur gear pair can be studied in terms of transmission error considering a single degree of freedom system. Thus, a mechanical system exhibiting combined parametric excitation ... [more ▼]

The dynamic behaviour of a spur gear pair can be studied in terms of transmission error considering a single degree of freedom system. Thus, a mechanical system exhibiting combined parametric excitation and clearance type nonlinearity is examined by means of numerical integrations and continuation methods in an effort to explain its complex behaviour, as it is commonly observed in the steady state forced response of rotating machines. The specific case of a preloaded mechanical oscillator having a periodically time varying stiffness function and subject to a symmetric backlash condition is considered. Even if such an oscillator represents the simplest model able to analyze a single spur gear pair, it exhibits a complex dynamic scenario, namely jumps, superharmonics, subharmonics resonances and dynamic bifurcations. In order to reduce the vibration of the system, a nonlinear absorber is applied. Unlike common linear and weakly nonlinear systems, systems with strongly nonlinear elements are able to react efficiently on the amplitude characteristics of the external forcing in a wide range of frequencies. A strongly and essentially nonlinear, lightweight, with cubic stiffness oscillator is then attached to the main nonlinear system under periodic parametric forcing and the feasibility of a possible application of this nonlinear energy sink (NES) for vibration absorption and mitigation is checked. [less ▲]

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See detailL'impact des transmissions familiales et scolaires sur la délinquance juvénile
Gavray, Claire ULg

in Burnay, N. (Ed.) Figures contemporaines dela transmission (2009)

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See detailEvolution of the surface chemistry of carbon xerogels with very different textural properties by chemical activation and oxidation
Zubizaretta, Leire; Arenillas, A.; Pirard, Jean-Paul ULg et al

in Proceedings of the International Carbon Conference 2009 (2009)

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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

in In Dahdouh-Guebas, F (Ed.) Proceedings of the Symposium on African Botany in Brussels (2009)

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See detailA magnetic susceptibility curve for the Devonian limestone.
Boulvain, Frédéric ULg; Da Silva, Anne-Christine ULg

in 12e congrès français de sédimentologie, ASF Rennes, livre des résumés Publi.ASF 64 (2009)

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See detailMeasuring home-range quality in the frugivorous gibbon (Hylobates lar)
Hambuckers, Alain ULg; Huynen, Marie-Claude ULg; Savini, Tommaso

Conference (2009)

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See detailEffects of crops on solute transport in undisturbed soil
Garré, Sarah ULg; Javaux, Mathieu; Vanderborght, Jan

Poster (2009)

Models predicting movement of surface applied chemicals incorporate knowledge on the water velocity field and moisture content distribution. Although the influence of root water uptake on solute transport ... [more ▼]

Models predicting movement of surface applied chemicals incorporate knowledge on the water velocity field and moisture content distribution. Although the influence of root water uptake on solute transport is commonly recognized as important, it has been studied sparsely. Yet, plants may take up a large part of the infiltrating water, thereby influencing the water flow pattern in the soil and concurrently solute transport processes. For this reason, experiments are required to investigate the relationship between plant root water uptake and flow field variability. The role of root water uptake on solute transport will be elucidated in two undisturbed soil columns. During three consecutive experiments, the influence of growing barley on tracer movement through a silty soil in two lysimeters will be followed. At the first stage, an inert tracer is put on the two bare lysimeters and leached with constant irrigation. As steady-state flow can be assumed, it is possible to follow the tracer movement in the column by ERT and to identify regions of preferential flow and solute transport parameters. During the second experiment, the tracer will be applied to mature barley grown in the lysimeters. Combining the information about the water content obtained with TDR with the relation between water content, soil solution salinity and bulk electrical conductivity, the soil solution salinity distribution can be derived from images of bulk electrical conductivity obtained with ERT. Root growth will be monitored using a minirhizotron. By comparing the transport parameters obtained after these two experiments, the effect of root water on the transport process can be quantified. When the columns are washed out and the barley is harvested, the third phase will be carried out under the same steady state flow conditions as in the first experiment to investigate the effect of dead roots on soil structure. [less ▲]

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See detailTransformation identitaires en cours de formation initiale des enseignants: axes d'une grille de réflexivité sur le métier
Dejean, Karine ULg

Conference (2009)

Cette communication porte sur l’analyse des transformations identitaires exprimées dans les discours des enseignants en formation initiale. Cette analyse nous a permis de dégager des axes de ... [more ▼]

Cette communication porte sur l’analyse des transformations identitaires exprimées dans les discours des enseignants en formation initiale. Cette analyse nous a permis de dégager des axes de transformation qui pourront servir d’outils dans le cadre de séances de réflexivité collective et individuelle avec les futurs enseignants en leur offrant des éléments d’intelligibilité pour les aider à se situer par rapport à leur propre parcours de développement et par rapport aux différentes attentes institutionnelles à leur égard. [less ▲]

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See detailMathematical modeling of bone regeneration during fracture healing
Geris, Liesbet ULg; Vander Sloten, Hans; Van Oosterwyck, Hans

in proceedings of the National Conference on Theoretical and Applied Mechanics (2009)

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See detailInstruction-level countermeasures against stack-based buffer overflow attacks
Gadaleta, Francesco ULg; Younan, Yves; Jacobs, Bart et al

in VDTS '09 Proceedings of the 1st EuroSys Workshop on Virtualization Technology for Dependable Systems (2009)

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See detailPTX3: a new marker for local inflammation ?
Ramery, Eve ULg; Bureau, Fabrice ULg; Art, Tatiana ULg et al

in Proceedings of the 11th ECVCP congress, Thessaloniki, Grece (2009)

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See detailComparison of gene expression in canine sino-nasal aspergillosis and idiopathic lymphoplasmacytic rhinitis: a microarray study
Vanherberghen, Morgane ULg; Bureau, Fabrice ULg; Peters, IR et al

in Proceedings of the 19th Annual ECVIM-CA Congress (2009)

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See detailPopulations vulnérables en temps de conflit armé
Pierre, Alexia ULg

in Guedah, Mohamed (Ed.) Délinquance et changements sociaux – dialogue nord/sud (2009)

De nombreux textes conventionnels et internationaux prévoient des dispositions de protection des populations non combattantes en temps de conflit armé. Parmi ces populations civiles, certains groupes sont ... [more ▼]

De nombreux textes conventionnels et internationaux prévoient des dispositions de protection des populations non combattantes en temps de conflit armé. Parmi ces populations civiles, certains groupes sont considérés comme plus vulnérables, dont les femmes et les enfants, pour lesquels des protections spéciales sont prévues. Malgré ces dispositions particulières, ces populations continuent de subir des exactions en temps de guerre, par exemple le viol systématique et massif, ou l'utilisation d'enfants dans les combats. [less ▲]

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See detailPour une histoire du goût aux Temps modernes
Von Hoffmann, Viktoria ULg

in Boire et Manger: Pour une histoire de l'alimentation (2009)

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See detailAerosol administration of cefquinome in healthy horses – effect on pulmonary function and lung inflammation
Art, Tatiana ULg; Ramery, Eve ULg; Fraipont, Audrey ULg et al

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

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See detailMonitoring certain endocrine parameters for predicting stillbirth in dairy cows
Szenci, Otto; Bajcsy, A Cs; Brydl, E. et al

in Proceedings: XVII International congress of mediterranean federation of health and production of ruminants (2009)

Detailed reference viewed: 62 (11 ULg)
See detailDe la perte de repères à la conquête de sens
Herla, Anne ULg

in Luyckx, Charlotte (Ed.) Pourquoi philosopher ? (2009)

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See detailLa féminité des déesses à l’épreuve des épiclèses : le cas d’Héra
Pirenne-Delforge, Vinciane ULg; Pironti, Gabriella

in Bodiou, Lydie; Mehl, Véronique (Eds.) La religion des femmes en Grèce ancienne. Mythes, cultes, société (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 detailDevelopment of an RMS model based on colored object-oriented Petri nets with changeable structures
Zhang, Linda; Ittoo, Ashwin ULg

in IEEE Proceedings of the 16th International Conference on Industrial Engineering and Engineering Management (2009)

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See detailApports de la luminescence à la chronologie de la basilique Saint-Seurin de Bordeaux
Bouver, Armel; Guibert, Pierre; Sapin, Christian et al

in Apports de la luminescence à la chronologie de la basilique Saint-Seurin de Bordeaux (2009)

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See detailThe post-harvest quality of bananas is determined by pre-harvest factors
de Lapeyre de Bellaire, Luc; Chillet, Marc; Lassois, Ludivine ULg et al

Poster (2009)

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See detailBody dermatitis in a donkey caused by the Psoroptes ovis
Mignon, Bernard ULg; Lekimme, Mireille ULg; Huynen, K. et al

Conference (2009)

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See detailDesign Procedure of a Nonlinear Vibration Absorber Using Bifurcation Analysis
Viguié, Régis ULg; Kerschen, Gaëtan ULg

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

A nonlinear energy sink (NES) is characterized by its ability to passively realize targeted energy transfer as well as multimodal damping. This latter feature seems to make this device very well suited ... [more ▼]

A nonlinear energy sink (NES) is characterized by its ability to passively realize targeted energy transfer as well as multimodal damping. This latter feature seems to make this device very well suited for reducing the vibration level of MDOF linear structures. The perspective of dealing with MDOF linear primary structures requires the development of an efficient NES design procedure. This paper poses the basis of such a procedure based upon the bifurcation analysis of a system composed of a linear oscillator coupled to a NES, using the software MatCont. [less ▲]

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See detailSurfactin adsorption on microporous polyethersulfone membranes
Coutte, F.; Lecouturier, D.; Bechet, M. et al

Poster (2009)

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See detailArchitectural ceramics dating applied to medieval building archaeology: the case of the church Notre-Dame-sous-Terre (Mont-Saint-Michel, France)
Blain, Sophie ULg; Guibert, Pierre; Bouvier, Armel et al

in Moreau, Jean-François; Auger, Réginald; Chabot, Jacques (Eds.) et al 36th International Symposium of Archeometry 2-6 May 2006, Québec City, Canada (2009)

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See detailInvestigating the Variability in Daily Traffic Counts Trough the Use of ARIMAX and SARIMAX Models: Assessing the Effect of Holidays on two diverse site locations
Cools, Mario ULg; Moons, Elke; Wets, Geert

in Proceedings of the 88th Annual Meeting of the Transportation Research Board (DVD-ROM) (2009)

In this paper, daily traffic counts are explained and forecasted by different modeling philosophies, namely the ARIMAX and SARIMA(X) modeling approaches. Special emphasis is put on the investigation of ... [more ▼]

In this paper, daily traffic counts are explained and forecasted by different modeling philosophies, namely the ARIMAX and SARIMA(X) modeling approaches. Special emphasis is put on the investigation of the seasonality in the daily traffic data and on the identification and comparison of holiday effects at different site locations. To get prior insight in the cyclic patterns present in the daily traffic counts, spectral analysis provides the required framework to highlight periodicities in the data. Data originating from single inductive loop detectors, collected in 2003, 2004 and 2005, are used for the analyses. Four traffic count locations are investigated in this study, an upstream and downstream traffic count location on a highway that is excessively used by commuters and an upstream and downstream traffic count location on a highway that is typified by leisure traffic. The different modeling techniques pointed out that weekly cycles appear to determine the variation in daily traffic counts. The comparison between seasonal effects and holiday effects at different site locations revealed that both the ARIMAX and SARIMAX modeling approach are valid frameworks for the identification and quantification of possible influencing effects. The technique yielded the insight that holiday effects play a noticeable role on highways that are excessively used by commuters, while holiday effects have a more ambiguous effect on highways typified for their leisure traffic. Modeling of daily traffic counts on secondary roads, and simultaneous modeling of both the underlying reasons of travel and revealed traffic patterns, certainly are challenges for further research. [less ▲]

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See detailNormal MRI-anatomy of the foal foot.
Van Thielen, B.; Murray, R.; De Ridder, F. et al

in BEVA Proceedings (2009)

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See detailThe Upper Palaeolithic of Uzbekistan
Kolobova, Ksenia; Flas, Damien ULg

Conference (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 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 detailImplicit surface-based design of regular bone scaffolds
Moesen, Maarten; Kerckhofs, Greet ULg; Van Bael, Simon et al

in Proc. ECCOMAS - International Conference on Tissue Engineering 2009. . 2009, Bártolo, P. (Eds.) (2009)

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See detailReconstruction of missing data in satellite data sets using DINEOF with constraints to reduce spurious high-frequency variations in the temporal EOFs
Alvera Azcarate, Aïda ULg; Barth, Alexander ULg; Sirjacobs, Damien ULg et al

Conference (2009)

DINEOF (Data Interpolating Empirical Orthogonal Functions) is a method to reconstruct missing data in geophysical data sets, such as gaps originated by the presence of clouds in infrared satellite sensors ... [more ▼]

DINEOF (Data Interpolating Empirical Orthogonal Functions) is a method to reconstruct missing data in geophysical data sets, such as gaps originated by the presence of clouds in infrared satellite sensors. Based on Empirical Orthogonal Functions (EOFs), DINEOF uses an iterative procedure to calculate the missing values. DINEOF has been compared to Optimal Interpolation, showing that more accurate results are achieved, with up to 30 times less computational time (tests made with sea surface temperature of the Adriatic Sea, and validated with in situ data). Another advantage of this technology is that there is no need for a priori knowledge of the reconstructed data set statistics (such as covariance or correlation length). The technique can be applied to a broad range of data (physical, biological, chemical), and to a variety of platforms (satellite data, in situ data...). Given the nature of the EOFs, it is not necessary that data sets are regularly distributed in time. Irregularly distributed data sets, however, may lead to discontinuities in the temporal EOFs calculated from them, and these discontinuities can affect in turn the quality of the DINEOF reconstruction. In satellite data, some images can present a large amount of cloud cover, and only a few pixels with valid data. EOF projection to such images can also lead to discontinuities in the temporal modes, as there might be an over-fitting to the scarce information present in those images. After briefly describe DINEOF and its applications, we present a study aiming to reduce these discontinuities by including a time constraint to the covariance matrix used in the EOF decomposition. The approach is tested with sea surface temperature data of the Black Sea, and the results are compared to independent data. [less ▲]

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See detailUse of cDNA-AFLP to study the defence-related gene expression in bananas (Musa spp.), inoculated with Colletotrichum musae responsible of crown rot
Lassois, Ludivine ULg; de Lapeyre de Bellaire, Luc; Jijakli, Haissam ULg

Conference (2009)

Crown rot disease of bananas is widespread in producing countries and is considered as the most important post-harvest disease of exported bananas. Variations of susceptibility to the disease have been ... [more ▼]

Crown rot disease of bananas is widespread in producing countries and is considered as the most important post-harvest disease of exported bananas. Variations of susceptibility to the disease have been noted between bananas but the origins still unknown. The biological responses of the fruit, including physiological change and disease susceptibility are controlled and regulated by gene expression. One way to understanding the reactions involved in variation of banana susceptibility to the disease in relation to their physiological state, is to study the expression of genes involved in these processes. To this purpose, crown sample previously inoculated with C. musae and showing 2 levels of susceptibility (very high and very low) were collected to be compared. Crown sample of each susceptibility level was collected at two different maturity stages: at harvest and 13 days after harvest (3 days after ripening). Collected crowns were immediately freeze-dried, an original method to conserve gene expression. cDNA-AFLP was applied on these 4 cell populations in order to highlight the differential transcription of genes whose function is "a priori" unknown. The cDNA-AFLP result was confirmed using quantitative real-time reverse transcription PCR. Various defence-related genes were identified and will be presented. [less ▲]

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See detailFluctuation of sediment production during the last millennia in the Ardenne Massif (Belgium)
Houbrechts, Geoffrey ULg; Notebaert, Bastiaan; Petit, François ULg et al

Poster (2009)

In the Ardenne massif, floodplains have recorded fluctuations in the production of sediment and several periods of increased sediment deposition have been identified. Before the first deforestations ... [more ▼]

In the Ardenne massif, floodplains have recorded fluctuations in the production of sediment and several periods of increased sediment deposition have been identified. Before the first deforestations rivers developed multiple channels in alluvial forests. Floodplains were not well-developed and probably very humid, which explains the presence of peat layers within the alluvial sequences. In the Amblève catchment, the first increased sedimentary deposition of the Holocene occurred during the Bronze Age (3200 BP), in relation to deforestation and the first crop cultures in the area. An organic deposition has occurred around 2700 BP and could correspond with a period of climatic degradation. Several peat layers have also been dated to around 1000 BP and probably indicate very low anthropogenic pressure. From the 11th Century onwards, there was an increase in sedimentation and a greater concentration of charcoal is present in the alluvial deposits. In many catchments there is an important increase in the sedimentation at the end of the 14th century, which can be related to the development of many iron factories. Analyses of slag concentration produced in these former factories allow us to reconstruct the evolution of the floodplain topography since the inception of the iron industries, in relation to the periods of activity. Total sedimentation in the smaller valleys since the initiation of iron industries amounts 0.5 to 1.0 m, which is in most cases about 50% of the total sediment present in the floodplains and corresponds to a mean sedimentation rate ranging between 10 and 20 cm/century. Such values are explained by various former agricultural practices and forest clearings associated with the huge demand for charcoal by the iron industry. About 20 ha of forest were cleared for the yearly consumption of a refining forge or a blast furnace and more than three hundred iron factories existed in the Ardenne Massif between the 14th and the 19th century. [less ▲]

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See detailLancement d’un programme d’amélioration génétique de Jatropha curcas L. au Sénégal
Terren, Marieke ULg; Saverys, S.; Jacquet de Haverskercke, P et al

Poster (2009)

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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 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 detailRisks assessment of water pollution by pesticides at local scale (Pesteaux Project): study of polluting pressure
Noël, Stéphanie; Bah, Boubacar Billo ULg

in Communications in Agricultural and Applied Biological Sciences (2009), 74(1), 165-170

Pollution of water resources (surface waters and ground waters) by pesticide uses is one of the key point of the European policy with the imptementation of the Water Frame Work Directive (2000/60/EC) and ... [more ▼]

Pollution of water resources (surface waters and ground waters) by pesticide uses is one of the key point of the European policy with the imptementation of the Water Frame Work Directive (2000/60/EC) and the thematic Strategy on the Sustainable use of pesticides. According to this Legislation, the Member States must initiale measures to limit environmental and toxicologieal effects caused by pesticide uses. The Agricultural Research Centre of Wallonia (CRA-W) emphasized the need of a toot for spatial risk analysis and develops it within the framework of PESTEAUX project. The originality of the approach proposed by the CRA-W is to generate maps to identify the risk of pollution at locale scale (agricultural parcel). The risk will be assessed according to the study of different factors, grouped under 3 data's tayers: polluting pressure, vulnerability of the physical environment (soil) and meteorological data. This approach is directly based on the risk's definition which takes into account the polluting pressure, linked te the human activities, and the vulnerabitity of the soil, defined by factors of physical environment which characterize the water flow in the parcel. Moreover, meteorological data influence the intensity and likelihoad flow of water, and indirectly pesticide by leaching or runoff. The PESTEAUX's approach to study the pollution is based on the model "source-vector-target". The source is the polluting pressure, in other words, the pesticides which could reach the targets. The main vector is the water which vehicles the pesticide on and trough the soil until the target which are the surface waters or ground waters. ln this paper we introduce the factors contributing to the polluting pressure. These factors are linking to the human activities and more precisely, to the pesticide uses. The factors considered have an influence on pesticide's transport by water (in its solid state or in dissolved state by leaching, run-off, or erosion) but also on a set of process controlling pesticide behavior in the environment such as degradation, sorption, .... [less ▲]

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See detailDynamical Modeling of the Deep Impact Dust Ejecta Cloud
Bonev, T.; Ageorges, N.; Bagnulo, S. et al

in Käufl, H. U.; Sterken, C. (Eds.) Deep Impact as a World Observatory Event: Synergies in Space, Time, and Wavelength (2009)

The collision of Deep Impact with comet 9P/Tempel 1 generated a bright cloud of dust which dissipated during several days after the impact. The brightness variations of this cloud and the changes of its ... [more ▼]

The collision of Deep Impact with comet 9P/Tempel 1 generated a bright cloud of dust which dissipated during several days after the impact. The brightness variations of this cloud and the changes of its position and shape are governed by the physical properties of the dust grains. We use a Monte Carlo model to describe the evolution of the post-impact dust plume. The results of our dynamical simulations are compared to the data obtained with FORS2footnote{FORS stands for \underline{FO}cal Reducer and low dispersion Spectrograph for the Very Large Telescope (VLT) of the European Southern Observatory (ESO).} to derive the particle size distribution and the total amount of material contained in the dust ejecta cloud. [less ▲]

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See detailMerovingian pottery in the Mosan Valley: diffusion and consumption
Van Wersch, Line ULg; Coquinot, Yvan; Mathis, François ULg et al

Poster (2009)

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See detailExpression analysis of IL-22 and bioactivity of its recombinant protein in rainbow trout (Oncorhynchus mykiss).
Mira Monte, Milena ULg; Zou, Jun; Carrington, Allison et al

Poster (2009)

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See detailL'artiste entrepreneur
Bawin, Julie ULg

Conference (2009)

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See detailGlance on preliminary nutritional data ORISCAV-LUX Survey
Alkerwi; Guillaume, Michèle ULg

Conference (2009)

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See detailMitochondrial DNA haplogroups modulate the serum levels of biomarkers in patients with osteoarthritis
Rego, I; Fernandez, M; DEBERG, Michelle ULg et al

in Osteoarthritis and Cartilage (2009), 17(Suppl 1), 72

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See detailMeta-Analysis in Transcriptional Network Inference
Meyer, Patrick ULg; Haibe-Kains, Benjamin; Bontempi, Gianluca

in Recomb Satellite 09 (2009)

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See detailGe/Si ratios and Si isotopes tracing mechanisms controlling the release of dissolved silicon in forest soil solutions
Cornelis, Jean-Thomas ULg; Delvaux, Bruno; Cardinal, Damien et al

Conference (2009)

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

Conference (2009)

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See detailL'intégration sociale des immigrés en Espagne
Brey, Elisa ULg

Conference (2009)

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See detailDetection of High molecular mass for MALDI Imaging and Profiling
Franck, Julien; Longuespée, Rémi ULg; Bonnel, David et al

Conference (2009)

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See detailOnline assessment of the quality of care in elderly (Belgium)
Tancredi, A; Renard, Florence ULg; Degey, S et al

Conference (2009)

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See detailWind Turbines in my landscape
Schmitz, Serge ULg; Van Rompaey, Anton

in A new methodology to assess the landscape capacity and social attitude, Territorial intelligence and culture of development : Università de Salerno 4-7 November 2009 (2009)

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