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See detailLe théorème de Lagrange en mathématiques et en économie : une étude didactique du savoir enseigné
Henry, Valérie ULg; Xhonneux, Sebastian

in Actes du Colloque EMF 2012 (2012)

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See detailRecommandations Europeennes 2011 pour le diagnostic et le traitement des arteriopathies peripheriques.
Brogneaux, C.; Sprynger, M.; Magnee, M. et al

in Revue Médicale de Liège (2012), 67(11), 560-5

In this article, we present the 2011 guidelines on the diagnosis and treatment of peripheral artery diseases. The document covers the diagnostic modalities and therapeutic strategies for the ... [more ▼]

In this article, we present the 2011 guidelines on the diagnosis and treatment of peripheral artery diseases. The document covers the diagnostic modalities and therapeutic strategies for the atherosclerotic disease of the extra-cranial carotid, mesenteric, renal, upper and lower extremity arteries indicating the class and level of evidence of the recommendations. [less ▲]

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See detailLinear magnetoelectric effect by orbital magnetism
Scaramucci, A.; Bousquet, Eric ULg; Fechner, M. et al

in Physical Review Letters (2012), 109(19),

We use symmetry analysis and first-principles calculations to show that the linear magnetoelectric effect can originate from the response of orbital magnetic moments to the polar distortions induced by an ... [more ▼]

We use symmetry analysis and first-principles calculations to show that the linear magnetoelectric effect can originate from the response of orbital magnetic moments to the polar distortions induced by an applied electric field. Using LiFePO 4 as a model compound we show that spin-orbit coupling partially lifts the quenching of the 3d orbitals and causes small orbital magnetic moments (μ (L)≈0.3μ B) parallel to the spins of the Fe2 + ions. An applied electric field E modifies the size of these orbital magnetic moments inducing a net magnetization linear in E. © 2012 American Physical Society. [less ▲]

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See detailBioindicator of Genotoxicity: the Allium cepa test
Tedesco, S; Laughinghouse IV, Haywood ULg

in Srivastava, J.K. (Ed.) Environmental Contamination (2012)

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See detailInfluence of sodium hypochlorite on Er:YAG Laser-irradiated dentin and its effect on the quality of adaptation of the composite restoration margins
LAHMOUZI, Jamila ULg; Farache, M.; Umana, M. et al

in Photomedicine and Laser Surgery (2012), 30(11), 655-662

Objective: The aims of this in vitro study were to evaluate: (1) the influence of 5% NaOCl application on Er:YAG-irradiated dentin; and (2) its effect on the quality of adaptation of the composite ... [more ▼]

Objective: The aims of this in vitro study were to evaluate: (1) the influence of 5% NaOCl application on Er:YAG-irradiated dentin; and (2) its effect on the quality of adaptation of the composite restoration margins. Background data: Previous research has shown that Er:YAG dentin irradiation produces a thermally affected tissue layer that results in lower bond strength than that of nonirradiated dentin. The removal of this thermally-affected layer may enhance the quality of dentin bonding Materials and methods: Forty-nine caries-free extracted human molars were transversely sectioned in order to totally expose the dentin. Four standardized cavities were created on the dentinal surface of each molar. First, two cavities were irradiated with Er:YAG laser (2.94 nm): 150 mJ, 10 Hz, variable square pulse (VSP) mode (100 μsec), beam diameter=0.9 mm, speed of irradiation=1 mm/sec, 20% air and 20% water. Then, one of irradiated cavities and one of nonirradiated cavities were treated for 30 sec with 5% NaOCl solution. Finally, they went through a standard bonding treatment for composite restoration, etching, bonding, and composite filling. We obtained four groups of cavities: (1) one control group of nonirradiated cavities not pretreated with NaOCl; (2) one group of nonirradiated cavities, pretreated with NaOCl; (3) one group of irradiated cavities, not pretreated with NaOCl; and (4) one group of irradiated cavities, pretreated with NaOCl. All samples were subjected to thermocycling. Every cavity was immersed into a 0.5% solution of methylene blue. The percentage of dye penetration (microleakage) in the composite-dentin interface was evaluated. Six molars were analyzed by scanning electron microscope. Results: Dye infiltration depth was significantly reduced in irradiated cavities treated with 5% NaOCl solution. Conclusions: The application of a 5% NaOCl solution on Er:YAG irradiated cavities can significantly improve the marginal quality of composite bonding. © Copyright 2012, Mary Ann Liebert, Inc. 2012. [less ▲]

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See detailInternationaal privaatrecht geannoteerd
Wautelet, Patrick ULg; Kruger, Thalia; Verhellen, Jinske et al

Book published by La Charte (2012)

This collection presents the most important statutory materials useful for the practice in Belgium of private international law. Each instrument (Belgian Acts, European Regulations and International ... [more ▼]

This collection presents the most important statutory materials useful for the practice in Belgium of private international law. Each instrument (Belgian Acts, European Regulations and International Conventions in force in Belgium) is reproduced together with comments highlighting the most important case law in relation to the provisions studied. [less ▲]

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See detailCommunity assembly along a soil depth gradient: contrasting patterns of plant trait convergence and divergence in a Mediterranean rangeland
Bernard-Verdier, Maud; Navas, Marie-Laure; Vellend, Mark et al

in Journal of Ecology (2012), (100), 1422-1433

1. Understanding how environmental factors drive plant community assembly remains a major challenge in community ecology. The strength of different assembly processes along environmental gradients, such ... [more ▼]

1. Understanding how environmental factors drive plant community assembly remains a major challenge in community ecology. The strength of different assembly processes along environmental gradients, such as environmental filtering and functional niche differentiation, can be quantified by analysing trait distributions in communities. While environmental filtering affects species occurrence among communities, functional divergence or convergence is strongly related to species abundances within communities, which few studies have taken into account. We examine the trait-mediated effect of these two processes along a stress-resource gradient. 2. We measured species abundances and the distributions of eight traits related to vegetative and regenerative phases in plant communities along a gradient of soil depth and resource availability in Mediterranean rangelands. We quantified environmental filtering, defined as a local restriction of trait range, and trait divergence, based on abundance-weighted trait variance, using a two-step approach with specifically designed null models. 3. Communities presented a clear functional response to the soil gradient, as evidenced by strong trends in community-weighted trait means. We detected environmental filtering of different traits at both ends of the gradient, suggesting that, contrary to widespread expectations, trait filtering may not necessarily be the result of abiotic filtering under harsh conditions but could likely also result from biotic interactions in productive habitats. 4. We found marked shifts in trait abundance distributions within communities along the gradient. Vegetative traits (e.g. leaf dry matter content) diverged on shallow soils, reflecting the coexistence of distinct water- and nutrient-use strategies in these constrained habitats and converged with increasing soil resource availability. By contrast, regenerative traits (e.g. seed mass) tended to diverge towards deeper soils, while plant reproductive heights diverged all along the gradient. 5. Synthesis: Our study highlights how the combination of abundance data with traits capturing different functional niches is critical to the detection of complex functional responses of plant communities to environmental gradients. We demonstrate that patterns of trait divergence and filtering are strongly contingent on both trait and environment such that there can be no expectation of a simple trend of increasing or decreasing functional divergence along a gradient of resource availability. [less ▲]

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See detailMétaphores conceptuelles dans les discours citoyens en Belgique
Reuchamps, Min ULg; Perrez, Julien ULg

in Perrez, Julien; Reuchamps, Min (Eds.) Les relations communautaires en Belgique: Approches politiques et linguistiques (2012)

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See detailA Review of Known and Hypothetical Transmission Routes for Noroviruses
Mathijs, E.; Stals, A.; Baert, L. et al

in Food and Environmental Virology (2012), 4(4), 131-152

Human noroviruses (NoVs) are considered a worldwide leading cause of acute non-bacterial gastroenteritis. Due to a combination of prolonged shedding of high virus levels in feces, virus particle shedding ... [more ▼]

Human noroviruses (NoVs) are considered a worldwide leading cause of acute non-bacterial gastroenteritis. Due to a combination of prolonged shedding of high virus levels in feces, virus particle shedding during asymptomatic infections, and a high environmental persistence, NoVs are easily transmitted pathogens. Norovirus (NoV) outbreaks have often been reported and tend to affect a lot of people. NoV is spread via feces and vomit, but this NoV spread can occur through several transmission routes. While person-to-person transmission is without a doubt the dominant transmission route, human infective NoV outbreaks are often initiated by contaminated food or water. Zoonotic transmission of NoV has been investigated, but has thus far not been demonstrated. The presented review aims to give an overview of these NoV transmission routes. Regarding NoV person-to-person transmission, the NoV GII. 4 genotype is discussed in the current review as it has been very successful for several decades but reasons for its success have only recently been suggested. Both pre-harvest and post-harvest contamination of food products can lead to NoV food borne illness. Pre-harvest contamination of food products mainly occurs via contact with polluted irrigation water in case of fresh produce or with contaminated harvesting water in case of bivalve molluscan shellfish. On the other hand, an infected food handler is considered as a major cause of post-harvest contamination of food products. Both transmission routes are reviewed by a summary of described NoV food borne outbreaks between 2000 and 2010. A third NoV transmission route occurs via water and the spread of NoV via river water, ground water, and surface water is reviewed. Finally, although zoonotic transmission remains hypothetical, a summary on the bovine and porcine NoV presence observed in animals is given and the presence of human infective NoV in animals is discussed. © 2012 Springer Science+Business Media New York. [less ▲]

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See detailLe cloisonnement des interbuttes en culture de pommes de terre : essai réalisé en collaboration avec Bayer CropScience (Huldenberg 2011)
Olivier, C.; Goffart, J.P.; Baets, D. et al

in FIWAP : Brochure du CCP 2012, partie 9.5 (2012)

Dans le sillage du projet « Contrôle du ruissellement et de ses impacts en culture de pomme de terre en Région wallonne 2009-2010 », un essai a été mis en place à Huldenberg sur demande de l’entreprise ... [more ▼]

Dans le sillage du projet « Contrôle du ruissellement et de ses impacts en culture de pomme de terre en Région wallonne 2009-2010 », un essai a été mis en place à Huldenberg sur demande de l’entreprise Bayer CropScience et financé par celle-ci. Pour rappel, le cloisonnement des interbuttes est la mise en place de diguettes entre les buttes de pomme de terre afin de favoriser l’infiltration de l’eau plutôt que son ruissellement. Les résultats de cette nouvelle année d’essai confirment l’efficacité de cette technique quant à la réduction du ruissellement et de l’érosion ainsi qu’une tendance à la hausse des rendements en tubercules. [less ▲]

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See detailImproving Generalization for 3D Object Categorization with Global Structure Histograms
Madry, Marianna; Ek, Carl Henrik; Detry, Renaud ULg et al

in IEEE/RSJ International Conference on Intelligent Robots and Systems (2012)

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See detailMieux comprendre et évaluer la réserve en eau des sols forestiers
Ridremont, François ULg; Degré, Aurore ULg; Claessens, Hugues ULg

in Forêt Wallonne (2012), 116

La ressource en eau constitue un des facteurs déterminants de l’adaptation de nos écosystèmes forestiers aux bouleversements climatiques annoncés. L’évaluation de la réserve en eau des sols devrait amener ... [more ▼]

La ressource en eau constitue un des facteurs déterminants de l’adaptation de nos écosystèmes forestiers aux bouleversements climatiques annoncés. L’évaluation de la réserve en eau des sols devrait amener à une meilleure perception de la vulnérabilité des stations forestières au stress hydrique et à des recommandations de gestion plus précises quant au choix des essences à implanter et aux techniques de sylviculture. Cet article introductif rappelle quelques fondamentaux concernant l’économie en eau d’un sol et la capacité des arbres à puiser l’eau stockée. [less ▲]

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See detailEnseigner la co-conception à distance : Retour sur cinq années d’expérience
Safin, Stéphane ULg; Kubicki, Sylvain; Hanser, Damien et al

in Guéna, François; Lecourtois, Caroline (Eds.) Complexité(s) des modèles de l'architecture numérique (2012)

Le LUCID-ULg et l’ENSA de Nancy organisent depuis cinq années le Studio Digital Collaboratif. Il s’agit d’un atelier de conception architecturale collaboratif à distance. Plusieurs groupes réunissant ... [more ▼]

Le LUCID-ULg et l’ENSA de Nancy organisent depuis cinq années le Studio Digital Collaboratif. Il s’agit d’un atelier de conception architecturale collaboratif à distance. Plusieurs groupes réunissant entre quatre et six étu- diants liégeois et nancéiens, conçoivent un projet architectural d’une certaine ampleur dans un délai de trois mois. Ce papier propose un retour sur cette ex- périence, dans ses aspects pédagogiques, organisationnels et technologiques. [less ▲]

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See detailPredicting the phenomenology of episodic future thoughts
D'Argembeau, Arnaud ULg; Van der Linden, Martial ULg

in Consciousness & Cognition (2012), 21

Recent findings suggest that multiple event properties contribute to shape the phenomenology of episodic future thoughts, but the specific role of each property is not yet fully understood. This study ... [more ▼]

Recent findings suggest that multiple event properties contribute to shape the phenomenology of episodic future thoughts, but the specific role of each property is not yet fully understood. This study shows that different phenomenological features are predicted by distinct event properties. The vividness of an episodic future thought largely depends on the familiarity of its constitutive elements (i.e., the envisioned location, persons and objects), while the visual perspective adopted is instead related to the temporal distance of the imagined event. Cognitive feelings such as the sense of pre-experiencing the future depend on sensory-perceptual qualities, and are further modulated by the personal importance attributed to the event. These findings suggest that the essence of episodic future thought—the sensation of mentally visiting one’s personal future—lies, in part, in the relevance of imagined events with respect to personal goals. [less ▲]

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See detailReview of Françoise Kral's 'Critical Identities in Contemporary Anglophone Diasporic Literature'
Dony, Christophe ULg

in South Asian Diaspora (2012), 4(1), 117-119

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See detailNuclear export of histone deacetylase 7 during thymic selection is required for immune self-tolerance.
Kasler, Herbert G.; Lim, Hyung W.; Mottet, Denis ULg et al

in EMBO Journal (2012)

Histone deacetylase 7 (HDAC7) is a T-cell receptor (TCR) signal-dependent regulator of differentiation that is highly expressed in CD4/CD8 double-positive (DP) thymocytes. Here, we examine the effect of ... [more ▼]

Histone deacetylase 7 (HDAC7) is a T-cell receptor (TCR) signal-dependent regulator of differentiation that is highly expressed in CD4/CD8 double-positive (DP) thymocytes. Here, we examine the effect of blocking TCR-dependent nuclear export of HDAC7 during thymic selection, through expression of a signal-resistant mutant of HDAC7 (HDAC7-DeltaP) in thymocytes. We find that HDAC7-DeltaP transgenic thymocytes exhibit a profound block in negative thymic selection, but can still undergo positive selection, resulting in the escape of autoreactive T cells into the periphery. Gene expression profiling reveals a comprehensive suppression of the negative selection-associated gene expression programme in DP thymocytes, associated with a defect in the activation of MAP kinase pathways by TCR signals. The consequence of this block in vivo is a lethal autoimmune syndrome involving the exocrine pancreas and other abdominal organs. These experiments establish a novel molecular model of autoimmunity and cast new light on the relationship between thymic selection and immune self-tolerance. [less ▲]

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See detailFP6 PROHITECH project: Volume 4: Seismic Protection of historical buildings: numerical analysis
Aleksovska, Marija; Altay Askar, Gülay; Aras, Fuat et al

Book published by Polimetrica (2012)

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See detailSpatial variability of leaf area index in homogeneous forests relates to local variation in tree characteristics
Bequet, R; Campioli, M; Kint, V et al

in Forest Science (2012), 58(6), 633-640

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