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See detailTime-domain homogenization of windings in 2-D finite element models
Gyselinck, Johan; V Sabariego, Ruth ULiege; Dular, Patrick ULiege

in IEEE Transactions on Magnetics (2007), 43(4), 1297-1300

In this paper, the authors propose an original time-domain extension of the frequency-domain homogenization of multiturn windings in finite element (FE) models. For the winding type in hand (e.g., round ... [more ▼]

In this paper, the authors propose an original time-domain extension of the frequency-domain homogenization of multiturn windings in finite element (FE) models. For the winding type in hand (e.g., round conductor with hexagonal packing), an elementary FE model is used for determining dimensionless frequency and time-domain coefficients regarding skin and proximity effect. These coefficients are readily utilized for homogenizing the winding in the FE model of the complete device. The method is successfully applied to an axisymmetric 103-turn inductor. The results agree very well with those obtained by an accurate but very expensive FE model in which all turns are finely discretized. [less ▲]

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See detailEchec du référendum
Durand, Pascal ULiege

in Durand, Pascal (Ed.) Les Nouveaux Mots du Pouvoir. Abécédaire critique (2007)

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See detailActivation de l'information morphologique au cours de la reconnaissance des mots chez les apprentis lecteurs et les dyslexiques
Casalis, Séverine; Quemart, Pauline ULiege; Colé, Pascale

in Hathout; Montermini, Fabio (Eds.) Morphologie à Toulouse. Actes du colloque international de morphologie 4èmes Décembrettes (2007)

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See detailForming limit predictions for single-point incremental sheet metal forming
Van Bael, A.; Eyckens, P.; He, S. et al

in Cueto, Elías; Chinesta, Francisco (Eds.) Proceedings of the 10th International ESAFORM Conference on Material Forming (2007)

A characteristic of incremental sheet metal forming is that much higher deformations can be achieved than conventional forming limits. In this paper it is investigated to which extent the highly non ... [more ▼]

A characteristic of incremental sheet metal forming is that much higher deformations can be achieved than conventional forming limits. In this paper it is investigated to which extent the highly non-monotonic strain paths during such a process may be responsible for this high formability. A Marciniak-Kuczynski (MK) model is used to predict the onset of necking of a sheet subjected to the strain paths obtained by finite-element simulations. The predicted forming limits are considerably higher than for monotonic loading, but still lower than the experimental ones. This discrepancy is attributed to the strain gradient over the sheet thickness, which is not taken into account in the currently used MK model. [less ▲]

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See detailKarsts in sandstones and quatrzites of Minas Gerais, Brazil
Willems, Luc ULiege; Rodet, J.; Pouclet, A. et al

Poster (2007)

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See detailFunctional, inflammatory and morphological characterisation of a cat model of allergic airway inflammation
Kirschvink, N.; Leemans, Jérôme ULiege; Delvaux, François et al

in Veterinary Journal (2007), 174(3), 541-553

The aims of this study were to characterise a model of feline allergic airway inflammation and to test through a longitudinal investigation whether five repeated allergen exposures would lead to signs of ... [more ▼]

The aims of this study were to characterise a model of feline allergic airway inflammation and to test through a longitudinal investigation whether five repeated allergen exposures would lead to signs of airway remodelling that would be detectable in vivo. Eight healthy control cats and eight cats sensitised with Ascaris suum allergens were investigated. Barometric whole body plethysmography (BWBP) was used for the assessment of respiratory variables and airway responsiveness (AR). Bronchoalveolar lavage fluid (BALF) was sampled for cytology and determination of F-2-isoprostane concentration and matrix metalloproteinase type 9 (MMP-9) activity. Thoracic radiography and bronchoscopy scores were also established. Cats were investigated prior to sensitisation and after inhalation of placebo or allergen challenge 1. BWBP measurements revealed a significant increase of enhanced pause (Penh), an index of bronchoconstriction, and AR in sensitised cats in response to allergen challenge 1. A significant increase in BALF neutrophil and eosinophil %, F-2-isoprostane concentration and MMP-9 activity, and increased radiography and bronchoscopy scores were recorded. After a recovery period of 6 weeks, all variables except BALF MMP-9 returned to baseline values. Four further allergen challenges induced similar changes to those seen in challenge I and no signs of persistent changes suggestive of bronchial remodelling were detectable. The model provides an in vivo approach to functional, inflammatory and morphological changes occurring in response to single and repeated allergen exposure. [less ▲]

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See detailA new interpretation of the Io UV footprint morphology
Bonfond, Bertrand ULiege; Grodent, Denis ULiege; Gérard, Jean-Claude ULiege et al

Conference (2007)

The electromagnetic interaction between Io and the jovian magnetic field leads to an auroral UV footprint consisting of single or multiple UV spots in both jovian hemi- spheres. According to current ... [more ▼]

The electromagnetic interaction between Io and the jovian magnetic field leads to an auroral UV footprint consisting of single or multiple UV spots in both jovian hemi- spheres. According to current theories, the perturbation induced by the motion of Io in the plasma torus propagates along the field lines in the form of Alfvén waves and finally causes electron precipitation in the jovian ionosphere. The occurrence and mul- tiplicity of the secondary spots appear to be related to the position of Io in the plasma torus and have been attributed to partial reflections of the Alfvén waves on the torus boundaries. Nevertheless, the discrepancies between the predicted inter-spot distances and the measurements were found difficult to explain. Additionally, some crucial con- figurations of Io in the torus had never been observed. Our recent HST/ACS observations of the footprint in so far unexplored Io-plasma torus configurations lead to the finding of a new feature in the footprint: a faint spot upstream of the main spot. The observations of this precursor emission, together with the inconsistencies related to the inter-spot distances, suggest a new interpretation of the footprint morphology. We propose that the precursor and the first secondary spot stem from the same mechanism and we interpret them as the counterparts of the main spot occurring in the opposite hemisphere. [less ▲]

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See detailLe tétras lyre dans les Hautes-Fagnes : quarante ans de suivis - dix ans d'actions.
Poncin, Pascal ULiege; Keulen, Christine; Loneux, Michèle ULiege et al

Conference (2007)

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See detailAnalysis of the support provided to student-athletes in Wallonia. The case of higher education
Cloes, Marc ULiege; Lenzen, Benoit; Polis, Ariane

in Diniz, J. A.; Carreiro da Costa, F.; Onofre, M. (Eds.) Active lifestyles: The impact of education and sport. Proceedings of the AIESEP 2005 World Congress (2007)

In this paper, the first aspect to keep in mind deals with the student-athletes’status. Indeed, the European culture is rather different than the North America’s one. US students, for example, have many ... [more ▼]

In this paper, the first aspect to keep in mind deals with the student-athletes’status. Indeed, the European culture is rather different than the North America’s one. US students, for example, have many advantages to become top athletes. Those who are selected in school, college or university teams are well supported by their institution. The NCCA (National Collegiate Athletic Association) is trying to limit the participation of the freshmen to the university competitions in order to provide them a better teaching context. An overview of the situation of studentathletes in 12 European countries revealed that not all of them have developed a positive climate in favour of their student-athletes. [less ▲]

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See detailDevelopment of a radioimmunoassay for bovine chymosin B
Idrissa-Sidikou, Djibo; Remy, Benoit; Dufrasne, Isabelle ULiege et al

in Tropicultura (2007), 25(3), 134-139

The present study was conducted to develop and validate a specific radioimmunoassay system for measurement of bovine chymosin B (bChyB) concentrations in plasma samples. Bovine ChyB was used for ... [more ▼]

The present study was conducted to develop and validate a specific radioimmunoassay system for measurement of bovine chymosin B (bChyB) concentrations in plasma samples. Bovine ChyB was used for immunization of rabbits and as standard and tracer. Chymosin B concentrations were measured in plasma samples from two groups of calves (Group 1: calves sampled from birth to 24 hours; Group 2: calves sampled from Day 1 to 21 after birth) and from one cow during the peri-partum period. Detection limit of the assay was 9.0 ng/mL. Recovery was higher than 89.3%. Repeatability and reproducibility ranged from 1.52% to 5.23% and from 1.52% to 12.57% respectively. No cross-reaction was found with pepsinogen A from bovine, porcine or human origins. In Group 1, bChyB concentrations increased from 47.3±45.1 ng/mL (5 min after birth) to 325.5±161.2 ng/mL (12 hours after birth), then it decreased till 293.0±161.5 ng/mL (24 hours after birth). In Group 2, concentrations decreased from Day 1 (455.3±191.1 ng/mL) to Day 21 (117.9±85.1 ng/mL). In adult cow, mean concentration was 136.0±32.3 ng/mL. In conclusion, bChyB is able to cross the stomach basal membrane and to reach the blood circulation at detectable levels in both young calves and adult cows. [less ▲]

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See detailWhat do you mean by eczema craquele?
Pierard, Gérald ULiege; Quatresooz, Pascale ULiege

in Dermatology : International Journal for Clinical & Investigative Dermatology (2007), 215(1), 3-4

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See detailSuccessful therapy of verrucous carcinoma by photodynamic therapy
NIKKELS, Arjen ULiege; thirion, L.; QUATRESOOZ, Pascale ULiege et al

Poster (2007)

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See detailMaximum-likelihood Based Range-dependence Compensation for Coherent Multistatic STAP-based Radar
Neyt, Xavier; Acheroy, Marc; Verly, Jacques ULiege

Conference (2007)

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See detailAcne iatrogene paroxystique et les inhibiteurs du recepteur du facteur de croissance epidermique (EGFR).
Pierard, Claudine ULiege; Blaise, G.; Paquet, Philippe ULiege et al

in Revue Médicale de Liège (2007), 62(1), 11-4

Paroxysmal drug-induced acne is a peculiar condition recognized for decades in dermatology. It can be induced by a variety of drugs. In recent years, the epidermal growth factor receptor inhibitors used ... [more ▼]

Paroxysmal drug-induced acne is a peculiar condition recognized for decades in dermatology. It can be induced by a variety of drugs. In recent years, the epidermal growth factor receptor inhibitors used in oncology have shown this type of adverse effects. The pathogenic mechanism is likely related to the EGF implication in the rupture of the microcomedo wall resulting in the perifollicular inflammatory reaction typical for acne. Other cutaneous adverse effects have been reported with anti-EGFR drugs including paronychia and xerosis. The dermatological treatments of these drug-induced disorders must be adequately targeted. [less ▲]

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See detailNew methodology for generating realistic data for evaluation of performance of radar STAP algorithms
Ries, Philippe; Tey, Shuwen; Verly, Jacques ULiege et al

Conference (2007)

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See detailA perturbation method for computing field distortions due to conductive regions with h-conform magnetodynamic finite element formulations
Dular, Patrick ULiege; V Sabariego, Ruth ULiege

in IEEE Transactions on Magnetics (2007), 43(4), 1293-1296

A method for solving eddy current problems in two separate steps is developed for global-local analyses with h-conform finite element formulations. An unperturbed problem is first solved in a global mesh ... [more ▼]

A method for solving eddy current problems in two separate steps is developed for global-local analyses with h-conform finite element formulations. An unperturbed problem is first solved in a global mesh excluding additional conductive regions. Its solution gives the sources for a sequence of other problems, perturbed by adding conductive regions. Each problem only requires a new adapted mesh of a local region. The way the local problems and their sources are defined leads to a significant speedup of parameterized analyses, e.g., in optimization and sensitivity analyses. [less ▲]

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See detailContribution of dendrochronology to the study of droughts in northwestern France (late XIX-XXth century)
Planchon, Olivier; Dubreuil, Vincent; Bernard, Vincent et al

in Geophysical Research Abstracts (2007)

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