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See detailUn témoignage des rapports entre Ambrosius Benson et l’atelier de Gérard David : la Descente de croix d’Ambrosius Benson conservée à Liège
Falque, Ingrid ULg

in Annales d'Histoire de l'Art et d'Archéologie (2010), 23

La Descente de croix attribuée à Ambrosius Benson fait partie des sept œuvres datées de ce peintre lombard qui s’établit à Bruges en 1518. Elle s’intègre, en outre, dans un groupe d’œuvres dont la ... [more ▼]

La Descente de croix attribuée à Ambrosius Benson fait partie des sept œuvres datées de ce peintre lombard qui s’établit à Bruges en 1518. Elle s’intègre, en outre, dans un groupe d’œuvres dont la composition découle d’un tableau célèbre de Gérard David conservé à la Frick Collection de New York. L’étude stylistique et l’analyse du dessin sous-jacent de la Descente de croix de Liège confirment l’attribution du tableau à Ambrosius Benson (avec une probable intervention de son atelier). Elles constituent ainsi un apport considérable pour l’étude de la production picturale de Benson. À ce jour, seules trois études approfondies de ce type ont été publiées sur les tableaux du Lombard. Par ailleurs, l’article s’attache à retracer le cheminement et la diffusion de la composition de la Descente de croix de Gérard David, de son atelier à celui de Benson. Il contribue ainsi à une meilleure connaissance des pratiques d’atelier brugeoises au XVIe siècle. [less ▲]

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See detailComponent-resolved diagnosis in peanut and hazelnut allergy.
Gadisseur, Romy ULg; Chapelle, Jean-Paul ULg; Cavalier, Etienne ULg et al

in Allergy (2010), 65(Suppl.92), 106

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See detailWykorzystanie impact-echo i radaru do wykrywania defektow ukladu naprawczego nie zawierajacych warstwy powietrza
Garbacz, Andrzej; Harassek, Piotr; Van der Wielen, Audrey ULg et al

in 39th Polish Conference on Non destructive Testing Methods, Szczyrk 26-28 October, Zeszyty Problemowe. Badania nieniszczące (2010)

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See detailDosage par GC/QQQ de huit pesticides organochlorés dans le sérum
Dubois, Nathalie ULg; Elbaz, A.; Charlier, Corinne ULg

in Acta Clinica Belgica (2010), 65(1), 58-64

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See detailMulti-Months Cycles Observed in Climatic Data
Nicolay, Samuel ULg; Mabille, Georges ULg; Fettweis, Xavier ULg et al

in Simard, Suzanne (Ed.) Climate Change and Variability (2010)

Climatic variations happen at all time scales and since the origins of these variations are usually of very complex nature, climatic signals are indeed chaotic data. The identification of the cycles ... [more ▼]

Climatic variations happen at all time scales and since the origins of these variations are usually of very complex nature, climatic signals are indeed chaotic data. The identification of the cycles induced by the natural climatic variability is therefore a knotty problem, yet the knowing of these cycles is crucial to better understand and explain the climate (with interests for weather forecasting and climate change projections). Due to the non-stationary nature of the climatic time series, the simplest Fourier-based methods are inefficient for such applications (see e.g. Titchmarsh (1948)). This maybe explains why so few systematic spectral studies have been performed on the numerous datasets allowing to describe some aspects of the climate variability (e.g. climatic indices, temperature data). However, some recent studies (e.g. Matyasovszky (2009); Paluš & Novotná (2006)) show the existence of multi-year cycles in some specific climatic data. This shows that the emergence of new tools issued from signal analysis allows to extract sharper information from time series. Here, we use a wavelet-based methodology to detect cycles in air-surface temperatures obtained from worldwide weather stations, NCEP/NCAR reanalysis data, climatic indices and some paleoclimatic data. This technique reveals the existence of universal rhythms associated with the periods of 30 and 43 months. However, these cycles do not affect the temperature of the globe uniformly. The regions under the influence of the AO/NAO indices are influenced by a 30 months period cycle, while the areas related to the ENSO index are affected by a 43 months period cycle; as expected, the corresponding indices display the same cycle. We next show that the observed periods are statistically relevant. Finally, we consider some mechanisms that could induce such cycles. This chapter is based on the results obtained in Mabille & Nicolay (2009); Nicolay et al. (2009; 2010). [less ▲]

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See detailHedge fund return specification with errors-in-variables
Coën, Alain; Hübner, Georges ULg; Desfleurs, Aurélie

in Journal of Derivatives and Hedge Funds (2010), 16(1), 22-52

In linear models for hedge fund returns, errors-in-variables may significantly alter the measurement of factor loadings and the estimation of abnormal performance. The higher moment estimator (HME ... [more ▼]

In linear models for hedge fund returns, errors-in-variables may significantly alter the measurement of factor loadings and the estimation of abnormal performance. The higher moment estimator (HME) introduced by Dagenais and Dagenais (1997) effectively deals with these issues. Results on individual funds show that the HME specification does not uncover systematic performance biases, but can modify estimated alphas in most cases and identifies relative persistence for directional funds in bearish market conditions. Overall, the risk premia calculated with HME remain relatively stable when compared to ordinary least squares specifications. [less ▲]

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See detailHet nieuwe echtscheidingsrecht: volgzaam en toch vooruitstrevend
Leleu, Yves-Henri ULg

in Verschelden, G. (Ed.) Echtscheiding (2010)

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See detailSelective epitaxial growth of III-V semiconductor on large-area Si substrate for advanced logic CMOS technologies
Nguyen, Ngoc Duy ULg; Brammertz, Guy; Wang, Gang et al

Conference (2010)

The continued downscaling of the metal-oxide semiconductor (MOS) transistor for sub-22 nm logic circuits with boosted performance will require the introduction of new channel materials with carrier ... [more ▼]

The continued downscaling of the metal-oxide semiconductor (MOS) transistor for sub-22 nm logic circuits with boosted performance will require the introduction of new channel materials with carrier mobility higher than that of Si, such as Ge for pMOS. The use of III-V compounds for nMOS devices poses however additional challenges related to the hetero-epitaxial growth of a polar semiconductor on a non-polar surface. Furthermore, these high-mobility materials have to be fabricated on large-area Si substrates, in the perspective of application in a standard low-cost very-large-scale integration scheme. In this work, we report on the successful growth of GaAs on 200 mm Si wafers by means of metal-organic vapor deposition using a modified Crius Close-Coupled Showerhead system from AIXTRON AG. We used Si (100) wafers with off-axis orientation (6° miscut towards <111>) in order to avoid the formation of anti-phase domains which lead to Ga-Ga and As-As bonds at their boundaries that have strong detrimental effects on the electrical conduction. In our approach, based on Ge virtual substrates with low threading dislocation (TD) density, the lattice mismatch between Si and GaAs is accommodated and, thus, no additional TD is introduced in the deposited III-V film. Our results show that smooth GaAs layers can be epitaxially grown on large-area Si substrates with high wafer-scale thickness uniformity. The excellent quality of the deposited GaAs was confirmed by photoluminescence and electron microscopy. Our process also demonstrates very high selectivity on patterned wafers with SiO2 mask and enabled the fabrication of capacitor structures using an integration process flow very similar to standard high volume Si manufacturing lines. The capacitance-voltage characteristics were similar to the ones obtained on a bulk GaAs substrate, and showed extremely tight within-wafer and wafer-to-wafer distributions as is standard to Si manufacturing. [less ▲]

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See detailControversy about the cardiovascular safety of sibutramine.
Scheen, André ULg

in Drug Safety : An International Journal of Medical Toxicology & Drug Experience (2010), 33(7), 615-8

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See detailMolecular requirements for ethanol differential allosteric modulation of glycine receptors based on selective Gbetagamma modulation.
Yevenes, Gonzalo E; Moraga-Cid, Gustavo; Avila, Ariel et al

in Journal of Biological Chemistry (2010), 285(39), 30203-13

It is now believed that the allosteric modulation produced by ethanol in glycine receptors (GlyRs) depends on alcohol binding to discrete sites within the protein structure. Thus, the differential ethanol ... [more ▼]

It is now believed that the allosteric modulation produced by ethanol in glycine receptors (GlyRs) depends on alcohol binding to discrete sites within the protein structure. Thus, the differential ethanol sensitivity of diverse GlyR isoforms and mutants was explained by the presence of specific residues in putative alcohol pockets. Here, we demonstrate that ethanol sensitivity in two ligand-gated ion receptor members, the GlyR adult alpha(1) and embryonic alpha(2) subunits, can be modified through selective mutations that rescued or impaired Gbetagamma modulation. Even though both isoforms were able to physically interact with Gbetagamma, only the alpha(1) GlyR was functionally modulated by Gbetagamma and pharmacological ethanol concentrations. Remarkably, the simultaneous switching of two transmembrane and a single extracellular residue in alpha(2) GlyRs was enough to generate GlyRs modulated by Gbetagamma and low ethanol concentrations. Interestingly, although we found that these TM residues were different to those in the alcohol binding site, the extracellular residue was recently implicated in conformational changes important to generate a pre-open-activated state that precedes ion channel gating. Thus, these results support the idea that the differential ethanol sensitivity of these two GlyR isoforms rests on conformational changes in transmembrane and extracellular residues within the ion channel structure rather than in differences in alcohol binding pockets. Our results describe the molecular basis for the differential ethanol sensitivity of two ligand-gated ion receptor members based on selective Gbetagamma modulation and provide a new mechanistic framework for allosteric modulations of abuse drugs. [less ▲]

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See detailBrainstem specific warping improves locus coeruleus functional imaging in humans
Balteau, Evelyne ULg; Schmidt, Christina ULg; Maquet, Pierre ULg et al

in Proceedings of the International Society for Magnetic Resonance in Medicine ... Scientific Meeting and Exhibition. International Society For Magnetic Resonance in Medicine. Scientific Meeting and Exhibition (2010)

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See detailEffect of macronutrient ratio of the pre-starter diet on broiler performance and intermediary metabolism.
Swennen, Q.; Everaert, Nadia ULg; Debonne, M. et al

in Journal of Animal Physiology & Animal Nutrition (2010), 94(3), 375-84

The aim of this study was to investigate the influence of isoenergetic substitution between the three energy delivering macronutrients in pre-starter diets on performance and intermediary nutrient ... [more ▼]

The aim of this study was to investigate the influence of isoenergetic substitution between the three energy delivering macronutrients in pre-starter diets on performance and intermediary nutrient metabolism in broiler chickens. From hatch until 5 days of age, 600 chicks, collected during peak of hatch, were fed one of the three experimental pre-starter diets with isoenergetic (13 MJ metabolisable energy/kg) substitutions between fat (43 vs. 108 g/kg), protein (126 vs. 240 g/kg) and carbohydrates (391 vs. 510 g/kg). After 5 days, commercial grower and finisher diets were provided. Pre-starter composition influenced body weight until slaughter age, although not statistically verifiable. Broilers fed the low protein (LP) pre-starter had the lowest body weight in relation to chickens on the low carbohydrate or low fat pre-starter diet. After hatch, chicks on the LP pre-starter diet were able to use the residual yolk sac more rapidly to fulfil their protein requirement, which is reflected in small intestine and liver development. Also, plasma metabolite levels were influenced mostly by the LP pre-starter, indicating that the main focus for the requirements of newly hatched chicks should be on proteins. Furthermore, optimal nutrition during the first day's post-hatch should take into account the contribution of the yolk. [less ▲]

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See detailIII-V Devices for Advanced CMOS
Waldron, Niamh; Nguyen, Ngoc Duy ULg; Lin, Dennis et al

in 217th ECS Meeting (2010)

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See detailSemi-solid metallic alloys modeling for the simulation of thixoforming processes
Koeune, Roxane ULg; Ponthot, Jean-Philippe ULg

in Vaz Jr., M.; de Souza Neto, E. A.; Munoz-Rojas, P. A. (Eds.) Computational Materials Modeling (2010)

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See detailPratique archéologique, esthétique picturale et temporalité historique chez Foucault
Bolmain, Thomas ULg

in Sens Public (2010)

Analysis of key texts of Michel Foucault devoted to the pictorial aesthetic during the sixties only makes sense if it is properly reported to the epistemological issues raised by archeology, i.e. the ... [more ▼]

Analysis of key texts of Michel Foucault devoted to the pictorial aesthetic during the sixties only makes sense if it is properly reported to the epistemological issues raised by archeology, i.e. the methodical description of speeches he was developing at the same time. The use of painting as an archive, on the first hand, and the outline of an archeology of painting, on the other hand, can highlight a tension between teachings of archeology of speeches and reflections inspired by painting. The symptom of this tension consists in the different meanings – archeological or pictural – of the notion of representation. This essential discontinuity between visibilities and discourses concerns the most basic premise of Foucaldian history of thought : instead of positing the continuity of one historical time, history of thought calls for a description of a crumbled temporality of history and for a complex interweaving of « various historicities ». The confrontation of Foucault’s archeology to his thought on painting thus shows one of the ways by which he finally came to propose an original philosophy of historical time. We would then hold the necessary preliminary to a possible reconstruction of the book, unfortunately lost, that Foucault devoted to the work of Manet, Le noir et la couleur. [less ▲]

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See detailL’édition pour la jeunesse en Belgique francophone : de la nécessité faite vertu à la mondialisation
Habrand, Tanguy ULg

in Pinhas, Luc; Foucault, Jean; Manson, Michel (Eds.) L'édition de jeunesse francophone face à la mondialisation (2010)

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See detailBasic Emotion Recognition and Psychopathology in Schizophrenia
Laroi, Frank ULg; Fonteneau, Benjamin; Mourad, Haitham et al

in Journal of Nervous & Mental Disease (2010), 198(1), 79-81

Detailed reference viewed: 52 (3 ULg)