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See detailA coupled two-scale computational approach for quasi-brittle out-of-plane structural failure
Mercatoris, Benoît ULg; Massart, Thierry J.

Conference (2009)

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

Conference (2009)

Detailed reference viewed: 52 (14 ULg)
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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 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 detailQuel dispositif de formation pour un CDS ? Réflexions à partir de l’expérience de l’Académie Wallonie-Europe
Merenne-Schoumaker, Bernadette ULg; Leduc, Laurent ULg

Conference (2009)

Through analysis and an attempt to assess the system developed at the level of the Wallonia-Europe Academy in the context of Center for Higher Didactics (Centre de Didactique Supérieure : CDS), the ... [more ▼]

Through analysis and an attempt to assess the system developed at the level of the Wallonia-Europe Academy in the context of Center for Higher Didactics (Centre de Didactique Supérieure : CDS), the purpose of this article is to reflect on the specificities and constraints of a training limited to teachers in charge of First Generation students, those specificities being especially constraining since the CDS training sessions take place in a larger context : the training of all the university teachers. The Liege experience enlightens some determinant factors : sensitizing first on the interest of such a training, centring the training on close coaching of students learning with a focus on their difficulties or deficiencies and with help given to teachers in resolving them, meeting the diversity of the situations lived by those teachers (notably in terms of students number and disciplines), taking into account their expectations in accordance with their profile, cleverly combining oral speeches, testimonies and debates, suggesting a diversity of concrete intervention trails… By the way, the joined organization of introduction sessions and close coaching seminars seems to be a relevant formula in order to meet such kind of objectives. [less ▲]

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See detailWerkt een muzikale opleiding de perceptie van prosodische prominentie in een vreemde taal in de hand?
Degrave, Pauline; Hiligsmann, Philippe; Rasier, Laurent ULg

Conference (2009)

Detailed reference viewed: 14 (0 ULg)
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See detailModerator : Prosthetic Session
Van Heusden, Alain ULg

Conference (2009)

Detailed reference viewed: 7 (1 ULg)
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See detailThe CORALS project: simulated Cosmic Radiations and Alternative Splicing.
Lambert, Charles ULg; Battout, S.; Van Oostveldt, P. et al

Conference (2009)

Detailed reference viewed: 8 (0 ULg)
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See detailImmunization and dermatophytes
Baldo, Aline ULg; Tabart, J.; Mathy, Anne ULg et al

Conference (2009)

Detailed reference viewed: 29 (8 ULg)
See detailSaturn Auroral Images and Movies from Cassini UVIS
Pryor, Wayne; Esposito, L.W.; Stewart, A.I.F. et al

Conference (2009)

Cassini’s Ultraviolet Imaging Spectrograph (UVIS) has completed five years of study of Saturn’s atmosphere and auroras. Two long slit spectral channels are used to obtain EUV data from 56.3-118.2 nm and ... [more ▼]

Cassini’s Ultraviolet Imaging Spectrograph (UVIS) has completed five years of study of Saturn’s atmosphere and auroras. Two long slit spectral channels are used to obtain EUV data from 56.3-118.2 nm and FUV data from 111.5-191.3 nm. 64 spatial pixels along each slit are combined with slit motion to construct spectral images of Saturn. Auroral emissions are seen from electron-excited molecular and atomic hydrogen. In 2008-2009 UVIS obtained data with the spacecraft well out of Saturn’s ring plane, permitting UVIS to obtain a number of short movies of the rotating auroral structures. In some movies a cusp-like feature is present near noon inside the oval. One movie from 2008 day 201 shows parallel linear features on the day side almost at right angles to the main auroral oval that appear, then lengthen, separate in the middle, and then fade away. The same movie also shows one bright "polar flare" inside the oval. A few of the most recent images were obtained at sufficiently close range that 2 spacecraft slews were needed to completely cover the oval. These images provide almost 100 pixels of information across the oval and clearly show multiple arcs of emission on the main oval and scattered emissions inside the oval. We will discuss these features, their locations, and possible interpretations. We also report on a search for an Enceladus auroral footprint on Saturn. [less ▲]

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See detailOperational Determination of Multiqubit Entanglement Classes
Bastin, Thierry ULg

Conference (2009)

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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 detailA web interface for griding arbitrarily distributed in situ data based on Data-Interpolating Variational Analysis (Diva)
Barth, Alexander ULg; Alvera Azcarate, Aïda ULg; Troupin, Charles ULg et al

Conference (2009)

Spatial interpolation of observations on a regular grid is a common task in many ceanographic disciplines (and geosciences in general). It is often used to create climatological maps for physical ... [more ▼]

Spatial interpolation of observations on a regular grid is a common task in many ceanographic disciplines (and geosciences in general). It is often used to create climatological maps for physical, biological or chemical parameters representing e.g. monthly or seasonally averaged fields. Since instantaneous observations can not be directly related to a field representing an average, simple spatial interpolation of observations is in general not acceptable. Diva (Data-Interpolating Variational Analysis) is an analysis tool which takes the error in the observations and the typical spatial scale of the underlying field into account. Barriers due to the coastline and the topography in general and also currents estimates (if available) are used to propagate the information of a given observation spatially. Diva is a command-line driven application written in Fortran and Shell Scripts. The observations and parameters are specified by the user using text files. The analyzed field and the expected error variance are returned as NetCDF files. This form of interaction with Diva is very similar to other high-performance codes and is a familiar approach for ocean modelers. However it represents a steep learning curve for oceanographers from other disciplines not familiar with command-line applications and programming. To make Diva easier to use, a web interface has been developed (http://gher-diva.phys.ulg.ac.be). Installation and compilation of Diva is therefore not required. The user can directly upload his/her data in ASCII format and enter several parameters for the analysis. The analyzed field, location of the observations, and the error mask are presented as different layers using the Web Map Service protocol. They are visualized in the browser using the Javascript library OpenLayers allowing the user to interact with layers (for example zooming and panning). Finally, the results can be downloaded as a NetCDF file, Matlab file (also readable in Octave, an open source program similar to Matlab) and Keyhole Markup Language (KML) file for visualisation in applications such as Google Earth. [less ▲]

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See detailInvolvement of the secreted serine protease Sub3 of Microsporum canis in adherence to feline epidermis
Mathy, Anne ULg; Tabart, J.; Vermout, S. et al

Conference (2009)

Detailed reference viewed: 30 (9 ULg)
See detailESCWA’s Social guide for Urban Observatories – presentation and discussion
Farah, Jihad ULg

Conference (2009)

In this paper we will make a brief presentation of ESCWA’s Social Guide for Urban Observatories (SGUO), then we will provide a commented example of application of its indicators’ framework. We will try to ... [more ▼]

In this paper we will make a brief presentation of ESCWA’s Social Guide for Urban Observatories (SGUO), then we will provide a commented example of application of its indicators’ framework. We will try to identify the essential determinants leading to the development of urban fragmentation. The SGUO indicators’ framework is a problem-based one. It aims to identify the determining conditions leading to the development of an urban “problem” and its impact on sustainable urban development. The author thinks of the SGUO indicators’ framework methodology as a building site in progress. On one hand, there’s still need to develop some of its theoretical framework components, mainly the concept of determinants. On the other, it should be revisited, in a participatory way. A primary application in a set of different urban observatories in the ESCWA region is needed in order to adapt it to the specificities of the region’s urban problems and local conceptions of sustainable development. [less ▲]

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See detailConséquences négatives de la présence d'antibiotiques dans les eaux usées lors de leur épuration par boues activées
Louvet, Jean-Noël ULg; Attik, Ghania; Dumas, Dominique et al

Conference (2009)

Detailed reference viewed: 10 (0 ULg)
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See detailPlant and their soil environment
Delaplace, Pierre ULg

Conference (2009)

Detailed reference viewed: 10 (3 ULg)
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See detailHandling range ambiguities in registration-based range-dependence compensation for conformal array STAP
Ries, Philippe; Verly, Jacques ULg; Lapierre, Fabian D.

Conference (2009)

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See detailApplications of 3D visualization in science and engineering
Burrus, Nicolas; Hoyoux, Thomas; Verly, Jacques ULg

Conference (2009)

Detailed reference viewed: 13 (2 ULg)
See detailFORMULATION OF PEPTIDE-LOADED LIPOSOMES FOR INTRAVENOUS DELIVERY: OPTIMIZATION OF THE ENCAPSULATION EFFICIENCY
Ducat, Emilie ULg; Brion, Michael; Evrard, Brigitte ULg et al

Conference (2009)

Purpose: Print 3G is a peptidic antagonist of oncoprotein involved in breast cancer, containing 25 amino acids. The purpose of this work is to study the peptide encapsulation into PEGylated liposomes ... [more ▼]

Purpose: Print 3G is a peptidic antagonist of oncoprotein involved in breast cancer, containing 25 amino acids. The purpose of this work is to study the peptide encapsulation into PEGylated liposomes composed of SPC:CHOL:mPEG-2000-DSPE (47:47:6). Methods: Loaded unilamellar vesicles were prepared by hydration of lipid film method. Unfortunately, a loss of Print 3G was observed during the different steps of this manufacturing technique giving rise to encapsulation efficiencies (EE) close to 0 %. Thus, the freeze-thawing method was used to enhance the amount of Print 3G encapsulated into blank liposomes prepared using the above procedure. Because many factors may influence the peptide entrapment into the vesicles (number of freeze-thawing cycles (NC), lipid concentration (LC), peptide concentration (PC) and mixing time (MT)), a design of experiment (DOE) was performed (for the screening, a Plackett and Burman plan; for the optimization, a central composite design). EE were calculated in terms of quantity of peptide loaded in liposomes as a function of quantity operated (EEp) or quantity of lipids (EEl). Results: The EE obtained by the freeze-thawing method in standard conditions (Katanasaka, Ida et al., 2008; Maeda, Bharate et al., 2008), amounted to 26.20 ± 7.98 %, n=3 (EEp) and to 0.26 ± 0.074 % (EEl). Among the different considered parameters, the screening permitted to identify two factors having a positive and significant influence on the EE: NC and LC. Concerning the PC and MT, no influence was revealed. For the second part of the DOE, the positive factors were optimized and obtained results revealed a theoretical optimum at 64.75 ± 3.55 % when 11 freeze-thawing cycles were applied (NC) and for the following LC: 36.1 mM SPC, 36.1 mM CHOL and 4mM mPEG-2000-DSPE. The experimental results showed an encapsulation efficiency of 62.68 ± 2.93 %. Photon correlation spectroscopy and freeze-fracture electron microscopy were also realized to examine the liposome integrity, before and after the freeze-thawing cycles. Conclusion: Changing the manufacturing technique permitted a significant encapsulation of Print 3G into liposomes. The DOE led to a significant improvement of encapsulation efficiencies. References: (1) Katanasaka,Y., Ida,T., Asai,T., Maeda,N., Oku,N., 2008. Effective delivery of an angiogenesis inhibitor by neovessel-targeted liposomes. International Journal of Pharmaceutics, 360, 219-224. (2) Maeda,H., Bharate,G.Y., Daruwalla,J., 2008. Polymeric drugs for efficient tumor-targeted drug delivery based on EPR effect. Eur. J Pharm Biopharm. Acknowledgements: This work was supported by the Ministry of the Walloon Region. [less ▲]

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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)

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See detailSearching for traces of life in ancient stromatolites down to the nanoscale.
Lepot, Kevin ULg; Philippot, Pascal; Benzerara, Karim et al

Conference (2009)

Detailed reference viewed: 26 (1 ULg)
See detailEffects of embryo thermal conditioning on thermotolerance, parameters of meat quality and muscle energy metabolism in a heavy line of chicken
Bedrani, L.; Berri, C.; Grasteau, S. et al

Conference (2009)

Detailed reference viewed: 16 (0 ULg)
See detailLes perturbateurs endocriniens et le monde agricole
Charlier, Corinne ULg

Conference (2009)

Detailed reference viewed: 16 (5 ULg)
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 detailSurvey of air-ice ocean carbon dioxyde exchange over arctic sea-ice
Heinesch, Bernard ULg; Aubinet, Marc ULg; Carnat, Gauthier et al

Conference (2009)

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See detailImportance de l'école dans le développement rural
Duquesne, Brigitte ULg

Conference (2009)

Detailed reference viewed: 21 (6 ULg)
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See detailNonribosomal peptides producing strains isolated from Bikalga and Soumbala fermented condiments of Burkina Faso
Savadogo, Aly; Chollet, Marlène; Tapi, Arthur et al

Conference (2009)

Detailed reference viewed: 7 (2 ULg)
See detailEarly land plant evolution: a tremendous success story.
Gerrienne, Philippe ULg

Conference (2009)

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See detailEtude épidémiologique des comportements alimentaires au service de la promotion de la santé
Lair, ML; Alkerwi, A; Couffignal, S et al

Conference (2009)

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See detaile-Demos, We'll Show You What We've Got !"
Lecomte, Béatrice ULg

Conference (2009)

Detailed reference viewed: 40 (17 ULg)
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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)

Detailed reference viewed: 54 (10 ULg)
See detailDevelopment of a quantitative method to detect trace amounts of hazelnut and soy allergens in food
Dobson, Rowan ULg; Fourdrilis, Séverine; Kirsch, Stéphanie ULg et al

Conference (2009)

Detailed reference viewed: 22 (3 ULg)
See detailLe Dévonien: des mousses à l'arbre.
Gerrienne, Philippe ULg

Conference (2009)

Detailed reference viewed: 4 (0 ULg)
See detailUncertainty of carbon dioxide fluxes introduced by different high-pass filtering methods
Ibrom, Andreas; Geißler, Simon; Laffineur, Quentin ULg et al

Conference (2009)

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See detailRythmes biologiques et comportement animal.
Poncin, Pascal ULg

Conference (2009)

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See detailLa vente de gré à gré
Kohl, Benoît ULg

Conference (2009)

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See detailIRF3 is required for induction of allergic airway inflammation by dendritic cells
Marichal, Thomas ULg; Bedoret, Denis; Goriely, M. et al

Conference (2009)

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See detailTerritorial reconversion and territorial knowledge: added-value of a territorial intelligence process in Flémalle (Belgium)
Breuer, Christophe ULg; Devillet, Guénaël ULg; Merenne-Schoumaker, Bernadette ULg

Conference (2009)

Our communication aims at spreading the participative approach implemented in Flémalle (“new governorship”), but also at discussing the contribution of the theorical and applied research undertaken within ... [more ▼]

Our communication aims at spreading the participative approach implemented in Flémalle (“new governorship”), but also at discussing the contribution of the theorical and applied research undertaken within the framework of the coordination action of the European Network of Territorial Intelligence for local projects (NTIC, participation, animation, analyzes….), the objective is to measure its added-value and transposability within territories of industrial tradition in a context of financial and temporal limitations. [less ▲]

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

Conference (2009)

Detailed reference viewed: 8 (4 ULg)
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 detailHyperfine Structure and Isotope Shifts in Iron Atoms
Krins, Stéphanie ULg; Oppel, S.; Huet, Nicolas ULg et al

Conference (2009)

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See detailLes premières plantes terrestres (Embryophytes) : origine et diversification - première partie.
Gonez, Paul ULg; Prestianni, Cyrille ULg; Strullu-Derrien, Marie-Christine et al

Conference (2009)

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See detailNarrative roles of the particle isT
Gillen, Todd Jonathan ULg

Conference (2009)

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See detailHet leerdercorpus Nederlands in theorie en in de praktijk
Perrez, Julien ULg; Degand, Liesbeth

Conference (2009)

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See detailNovel micro-CT based local strain mapping tool to characterize the failure modes of bone tissue engineering scaffolds
Kerckhofs, Greet ULg; Van Bael, Simon; Moesen, Maarten et al

Conference (2009)

Detailed reference viewed: 14 (1 ULg)
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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)

Detailed reference viewed: 7 (3 ULg)
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See detailAutonomous Learning of Object-specific Grasp Affordance Densities
Detry, Renaud ULg; Başeski, Emre; Krüger, Norbert et al

Conference (2009)

Detailed reference viewed: 25 (2 ULg)
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See detailRestauração dos campos rupestres: efeitos de espécies lenhosas sobre as comunidades adjacentes
Le Stradic, Soizig ULg; Buisson, Elise; Negreiros, Daniel et al

Conference (2009)

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See detailThe beta Cephei star HD180642: Seismic modelling
Thoul, Anne ULg

Conference (2009)

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See detailPerturbations endocriniennes liées aux polluants environnementaux
Charlier, Corinne ULg

Conference (2009)

Detailed reference viewed: 36 (10 ULg)
See detailSlope stability analyses in loess deposits in Fergana Valley (Kyrgyzstan)
Mamyrova, Raushan; Bourdeau, Céline; Havenith, Hans-Balder ULg et al

Conference (2009)

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See detailRéponse à Harm Pinkster: Relatieve bijzinnen in het Latijn
Longrée, Dominique ULg

Conference (2009)

Detailed reference viewed: 7 (1 ULg)
See detailTerritory knowledge (B1pc) - Discussion report
Breuer, Christophe ULg

Conference (2009)

Detailed reference viewed: 16 (0 ULg)
See detailIdentification, cartographie et gestion des Forêts à Haute Valeur de Conservation : cas de la concession Pallisco, Cameroun
Julve Larrubia, C.; Sépulchre, F.; Philippart, Julien ULg et al

Conference (2009)

Detailed reference viewed: 48 (11 ULg)
See detailFootball, nationalisme et gouvernance
Tuñón, Jorge; Brey, Elisa ULg

Conference (2009)

Detailed reference viewed: 14 (0 ULg)
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See detailLes huiles essentielles de menthe d’Algérie:« Mentha pulegium & Mentha rotundifolia ».
Brada, M.; Achour, D.; Wathelet, Jean-Paul ULg et al

Conference (2009)

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See detailL'agriculture familiale africaine au coeur des Objectifs du Millénaire pour le Développement (OMD)
Berti, Fabio ULg; Lebailly, Philippe ULg

Conference (2009)

L’agriculture familiale africaine est concernée directement par l’Objectif 1 du Millénaire pour le Développement, de réduire de moitié d’ici 2015 l’extrême pauvreté et la faim. En effet, selon la plupart ... [more ▼]

L’agriculture familiale africaine est concernée directement par l’Objectif 1 du Millénaire pour le Développement, de réduire de moitié d’ici 2015 l’extrême pauvreté et la faim. En effet, selon la plupart des observateurs, 70% des pauvres sont localisés dans les zones rurales et sont agriculteurs. Dans ce contexte, il importe de s’interroger sur l’avenir des exploitations agricoles familiales en Afrique. Après avoir présenté la problématique générale de l’exploitation agricole familiale dans le développement, les auteurs présentent une analyse au départ des constats qu’ils ont pu réaliser, respectivement pour les filières de rente de la zone forestière au Cameroun et pour le coton, dans plusieurs pays d’Afrique de l’Ouest. Les analyses sont réalisées à partir des observations effectuées au départ de différentes études financées essentiellement par la Commission européenne au cours de ces dernières années. Il en résulte que le terme « agriculture familiale » recouvre des réalités très différentes avec une différenciation de plus en plus poussée des exploitations agricoles. Dans le même temps, il subsiste de nombreuses exploitations familiales plus « traditionnelles » mêlant des logiques d’autoconsommation et de marché avec des dotations en facteurs plus inégales et donc plus vulnérables. L’enjeu primordial des politiques agricoles qui seront définies sera précisément de prendre en considération la dimension spécifique de ce type d’exploitation, cible prioritaire dans la lutte contre la pauvreté. L’orientation des politiques mises en œuvre autour du seul objectif de la production de biens agricoles ne permettra pas de réduire les disparités internes et souvent croissantes observées. Il convient donc d’intégrer les dimensions sociales et environnementales dans les objectifs des politiques agricoles à mettre en œuvre. [less ▲]

Detailed reference viewed: 129 (25 ULg)
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See detailGeneration of total angular momentum eigenstates in remote qubits
Maser, A.; Schilling, U.; Bastin, Thierry ULg et al

Conference (2009)

Detailed reference viewed: 6 (1 ULg)
Peer Reviewed
See detailLe temps des tribus et des ghettos?
Delruelle, Edouard ULg

Conference (2009)

Detailed reference viewed: 6 (0 ULg)
See detailLos retos de la inmigración a nivel local
Domínguez, Marta; Brey, Elisa ULg

Conference (2009)

Detailed reference viewed: 2 (0 ULg)
See detailImplants dans le secteur esthétique: choix du timing et de la technique chirurgicale.
LAMBERT, France ULg

Conference (2009)

Les résultats esthétiques en implantologie sont déterminés par une harmonie tissulaire et prothétique. Plusieurs techniques chirurgicales sont décrites et le choix de celle-ci est déterminant pour obtenir ... [more ▼]

Les résultats esthétiques en implantologie sont déterminés par une harmonie tissulaire et prothétique. Plusieurs techniques chirurgicales sont décrites et le choix de celle-ci est déterminant pour obtenir un résultat esthétique optimal. Cet exposé décrit des techniques chirurgicales telles que: extraction/implantation immédiate, gestion d'alvéoles ou encore régénération osseuse. L'objectif est, à partir d'une situation clinique initiale, de déterminer le choix de la technique idéale ainsi que le timing chirurgical . [less ▲]

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See detailVanadium oxide-based mesoporous films as positive electrode material in Li-ion batteries
Krins, Natacha ULg; Caes, Sébastien ULg; Arrebola, José-Carlos et al

Conference (2009)

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See detailLes expositions d'art sonore: désarçonnantes?
Eloy, Céline ULg

Conference (2009)

Detailed reference viewed: 15 (0 ULg)
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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 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 ▲]

Detailed reference viewed: 36 (9 ULg)
See detailQuantum State Construction of Matter Qubits via Projective Measurements
von Zanthier, J.; Maser, A.; Schilling, U. et al

Conference (2009)

Detailed reference viewed: 3 (0 ULg)
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See detailDust exposure exacerbates the expression of ptx3, a recently discovered acute phase protein, in horses’ airways
Ramery, Eve ULg; Bureau, Fabrice ULg; Lekeux, Pierre ULg

Conference (2009)

Heaves is a common cause of recurrent airway obstruction (R.A.O) that occurs in mature horses stabled in a dusty environment. The long pentraxin PTX3 play an important role in the host defence and over ... [more ▼]

Heaves is a common cause of recurrent airway obstruction (R.A.O) that occurs in mature horses stabled in a dusty environment. The long pentraxin PTX3 play an important role in the host defence and over-expression of PTX3 may contribute to airways injury. Therefore, we hypothesised that PTX3 may have relevance in the understanding of the pathogenesis of recurrent airway obstruction (R.A.O). In the present study, we first investigated the equine PTX3 (ePTX3) structure by cloning, sequencing and western-blotting. A 120pb deletion was found in the second exon of ePTX3 in comparison to human PTX3. Moreover, an alternative splicing occurs with complete deletion of the second exon, resulting in two forms of the protein, “spliced” (32 kD) and “full length” (42 kD). The pentraxin domain is very well conserved in the two forms with 94% of amino-acids conserved between equines and humans. These findings could have implications for the comprehension of the function of each domain of the protein. Then, we studied the effects of dust exposure and subsequent R.A.O crisis on ePTX3 expression in the broncho-alveolar lavage fluid (BALF) and the bronchial epithelial cells. PTX3 could be detected in BALF macrophages, neutrophils, eosinophils and bronchial epithelial cells. It was over-expressed in the BALF supernatant from RAO-affected horses in crisis. Dust exposure induced PTX3 in BALF macrophages either in healthy horses or in R.A.O-affected horses. Conversely, PTX3 was strongly over-expressed in the bronchial epithelial cells from R.A.O-affected horses in crisis. Considering epithelial cells as one of the major cell types in the airways, PTX3 produced at this level may play an important role in inflammatory process. Moreover, it suggests that dust-induced expression of PTX3 is differentially regulated in macrophages and bronchial-epithelial cells. A JNK-dependant, NFκB-independent regulatory pathway has been described in lung epithelial cells. A comparable mechanism could be involved in bronchial epithelial cells. If this is confirmed, PTX3 expression in respiratory epithelial cells could be therapeutically targeted. [less ▲]

Detailed reference viewed: 22 (1 ULg)