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See detailCurrent-induced giant vortex and asymmetric vortex confinement in microstructured superconductors
Chao, X. H.; Zhu, B. Y.; Silhanek, Alejandro ULg et al

in Physical Review. B : Condensed Matter (2009), 80(5),

Based on the time-dependent Ginzburg-Landau equations, we study numerically current-driven vortices in a micrometer size square type-II superconductor. We demonstrate that the applied current ... [more ▼]

Based on the time-dependent Ginzburg-Landau equations, we study numerically current-driven vortices in a micrometer size square type-II superconductor. We demonstrate that the applied current significantly influences the dynamics of the vortices entering the sample. Strikingly, we find that a giant vortex can be created by the current-assisted collision of two singly quantized vortices. [less ▲]

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See detailDecline Of Endemic Oncocyclus Irises (Iridaceae) Of Lebanon: Survey And Conservation Needs
Saad, Layla ULg; Talhouk, Salma; Mahy, Grégory ULg

in Oryx (2009), 43(1), 91-96

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See detailBelgian consensus guidelines for follow-up of women with cervical cytological abnormalities.
Cuvelier, C. A.; Bogers, J. P.; Bourgain, C. et al

in Acta Clinica Belgica (2009), 64(2), 136-43

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See detailEfficacite anti-fracturaire de l'ibandronate administre par voie intraveineuse: de la complexite des etudes epidemiologiques interventionnelles a la pratique quotidienne.
Neuprez, A.; Hiligsmann, Mickaël ULg; Bruyère, Olivier ULg et al

in Revue Médicale de Liège (2009), 64(10), 525-9

Numerous epidemiological approaches are used to demonstrate the efficacy of a new chemical entity. In postmenopausal osteoporosis, anti-fracture efficacy can be assessed through prospective, randomized ... [more ▼]

Numerous epidemiological approaches are used to demonstrate the efficacy of a new chemical entity. In postmenopausal osteoporosis, anti-fracture efficacy can be assessed through prospective, randomized controlled trials, meta-analyses or real-life setting studies. Intravenous ibandronate was recently marketed, with the aim of optimizing drug absorption and adherence to treatment. Furthermore, this new formulation avoids gastrointestinal side effects and constrains linked to the oral intake of the medication. Spinal anti-fracture efficacy of IV ibandronate derives from a non-inferiority bridging study, using surrogate endpoints, i.e., bone mineral density and biochemical markers of bone turnover, compared to the oral daily formulation, previously registered for the treatment of osteoporosis in Europe. Coherent results from two separate meta-analyses have suggested that the non-vertebral anti-fracture efficacy of IV ibandronate is similar to that observed with oral, daily and weekly bisphosphonates. Similarly, a recent real-life setting study, based on claims from an US database, suggests that hip fractures are reduced, with IV ibandronate, to the same extend as they are with oral bisphosphonates. Notwithstanding, those results should probably be confirmed in an European setting, before being extrapolated, in daily practice, to the Belgian population. [less ▲]

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See detailLa Semois et son bassin, histoire d'un contrat de rivière
Rosillon, Françis ULg; Lobet, Jérôme ULg; Tassin, Mélanie ULg et al

in Au fil de la Semois (2009)

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See detailLes traitements biologiques en rhumatologie
Von Frenckell, Christian ULg; Malaise, Michel ULg

in Revue Médicale de Liège (2009), 64(5-6), 293-300

Biological therapies consisting of monoclonal antibodies and soluble receptors have revolutionized the care of rheumatologic patients. These therapies ensued from a better understanding of the ... [more ▼]

Biological therapies consisting of monoclonal antibodies and soluble receptors have revolutionized the care of rheumatologic patients. These therapies ensued from a better understanding of the physiopathology of rheumatologic disorders. Most of the latter have been concerned: rheumatoid arthritis (for about 10 years), psoriatic arthritis and ankylosing spondilitys (for more or less five years). Rheumatology was among the first disciplines to make use of these advances; it continues to benefit from the results of intense research efforts. These developments request from clinicians an increased expertise in immunology. [less ▲]

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See detailLes matières colorantes au début du Paléolithique supérieur : sources, transformations et fonctions
Salomon, Hélène ULg

Doctoral thesis (2009)

Abstract : Despite an increasing number of studies, colouring materials are still poorly understood among excavation remains. Their attraction lies in their capacity to bring to light diverse and complex ... [more ▼]

Abstract : Despite an increasing number of studies, colouring materials are still poorly understood among excavation remains. Their attraction lies in their capacity to bring to light diverse and complex skills, but also in their intense colouring power and their contrasting colours : red and black, which still possess a symbolic value. These highly symbolic materials may, therefore, highlight the “conceptual” practices of prehistoric men and give access to their symbolic world and thought. In such a particular context as the transition between the Middle and the Upper Palaeolithic, these remains, which are very abundant in most excavations, offer the possibility, through analysis, to get an exceptional insight into the way of life of the last Neanderthals. The Châtelperronian site of the “Grotte du Renne”, in Arcy-sur-Cure (Yonne), is a landmark. It was excavated beween 1949 and 1963 by André Leroi-Gourhan : Numerous colouring materials were discovered there, and Leroi-Gourhan developed theories about their transformation and uses which so far have not been tested, and have remained unchallenged.Since their discovery, the assumption is that those minerals were heated in a controlled way, in order to modify their colour. It is indeed well-known that heat transforms yellow materials (iron hydroxides) in orange, red or purple materials (iron oxides). From this hypothesis originates the theory according to which Neanderthals exploited colouring materials as pigments for symbolic or even aesthetic purposes. But the theory has so far never been proved true. Our study combines several sets of data, obtained from different methods. Physico-chemical and petrological analyses were carried out on the colouring materials. These data were related to their location on the site, in association with exceptionally well preserved “hut” structures. Furthermore, a series of experimentations, aimed to characterize powders obtained via different methods (grinding and crushing on the one hand, abrasion on the other hand). The comparison of all these data enabled us to identify the various technical choices which informed the supply in colouring minerals in all the Châtelperronian levels of the Grotte du Renne. It was thus possible to demonstrate that none of these materials, either red or black, was heated before being used, contrary to what had been assumed so far. The supply in colouring materials was as carefully organised as for other materials (flint, for example) ; they were collected in geological formations occasionally showing on the surface, at more than 10 km from the cave. The exploitation of these geological sites did not vary during the whole Châtelperronian period, and privileged materials which can easily be ground into powder. Part of their supply was ground coarsely in order to cover large surface areas (soils or hides) as preservative or to clean them up. The remaining materials were destined to more meticulous activities, which required a fine, regular, and highly-colouring powder. In this latter case, the Neanderthals of the Grotte du Renne used those products when working on bone materials (bone or mammoth ivory), and used them also for their sheer colour. The set of colouring minerals from the Grotte du Renne reveals Neanderthals’ in-depth knowledge of materials ; they understood perfectly well their properties and qualities, and used them extensively, so that the Châtelperronian site must have been a literally dazzling sight, all red and black. The “chaîne opératoire” which transpires from our analysis shows very sophisticated techniques, and an advanced “technological” knowledge. They are witness to surprising capacities and a highly-evolved pattern of thought. [less ▲]

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See detailTrophic niches of thirteen damselfishes (Pomacentridae) at the Grand Récif of Toliara, Madagascar
Frederich, Bruno ULg; Fabri, Grégory ULg; Lepoint, Gilles ULg et al

in Ichthyological Research (2009), 56

The damselfishes, with more than 340 species, constitute one of the most important families that live in the coral reef environment. Most of our knowledge of reef-fish ecology is based on this family, but ... [more ▼]

The damselfishes, with more than 340 species, constitute one of the most important families that live in the coral reef environment. Most of our knowledge of reef-fish ecology is based on this family, but their trophic ecology is poorly understood. The aim of the present study was to determine the trophic niches of 13 sympatric species of damselfishes by combining stable isotope (d15N and d13C) and stomach content analyses. Isotopic signatures reveal three main groups according to their foraging strategies: pelagic feeders (Abudefduf sexfasciatus, A. sparoides, A. vaigiensis, Chromis ternatensis, C. dimidiata, Dascyllus trimaculatus and Pomacentrus caeruleus), benthic feeders (Chrysiptera unimaculata, Plectroglyphidodon lacrymatus and Amphiprion akallopisos) and an intermediate group (D. aruanus, P. baenschi and P. trilineatus). Stomach contents reveal that planktonic copepods and filamentous algae mainly represent the diets of pelagic feeders and benthic feeders, respectively. The intermediate position of the third group resulted from a partitioning of small planktonic prey, small vagile invertebrates and filamentous algae. In this last feeding group, the presence of a wide range of d13C values in P. trilineatus suggests a larger trophic niche width, related to diet-switching over time. Some general considerations about the feeding habits of damselfishes reveal that their choice of habitat on the reef and their behavior appear to be good predictors of diet in this group. Benthic (algae and/or small invertebrates) feeders appear to be solitary and defend a small territory on the bottom; zooplankton feeders remain in groups just above the reef, in the water column. [less ▲]

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See detailPotential mechanism of sound production in Oreochromis niloticus (Cichlidae)
Longrie, Nicolas ULg; Van Wassenbergh, Sam; Mauguit, Quentin ULg et al

in Journal of Experimental Biology (2009), 212

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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 detailESC Forum on Drug Eluting Stents European Heart House, Nice, 27-28 September 2007.
Daemen, Joost; Simoons, Maarten L.; Wijns, William et al

in European heart journal (2009), 30(2), 152-61

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See detailNumerical post failure methods in multiphysical problems
Collin, Frédéric ULg; Levasseur, Séverine ULg; Chambon, René

in European Journal of Environmental and Civil Engineering [=EJECE] (2009), 7-8

Rupture in geomaterials is often preceded by a localization of the deformations within thin bands. The strain localization is thus an important process, which has been studied both experimentally and ... [more ▼]

Rupture in geomaterials is often preceded by a localization of the deformations within thin bands. The strain localization is thus an important process, which has been studied both experimentally and theoretically. This paper summaries main observations on localized phenomena and proposes theoretical and numerical tools to characterize localization processes. To deal with interactions occurring between the different phases of porous media, a regularization technique based on the second gradient model has been extended to multiphysic couplings. [less ▲]

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See detailMulti-physical processes in geomechanics – an introduction to constitutive modelling and coupling aspects
Charlier, Robert ULg; Dizier, Arnaud ULg; Laloui, Lyesse et al

in European Journal of Environmental and Civil Engineering [=EJECE] (2009), 7-8

This paper is the basis for a course dedicated to the geomechanics modelling, taking into account multiphysics couplings. A number of different coupling are discussed, with respectively the fluid flow ... [more ▼]

This paper is the basis for a course dedicated to the geomechanics modelling, taking into account multiphysics couplings. A number of different coupling are discussed, with respectively the fluid flow (saturated and unsaturated) and the thermal transfers in deformable porous media. Eventually some aspects on the numerical modelling with the finite element method are discussed. [less ▲]

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See detailLa CJCE refuse d’ériger la possibilité de récupération des pertes en condition nécessair e à la qualification de prix de prédation et confirme l’inexistence d’un dr oit absolu de s’aligner sur les prix des concurr ents
Sibony, Anne-Lise ULg

in Concurrences : Revue des Droits de la Concurrence (2009), 2

CJCE, 2 avril 2009, France Télécom c/ Commission, aff.C-202/07 P

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See detailLa CJCE confirme l’arrêt du TPICE et juge qu’il n’a jamais été demandé à un opérateur d’accor der obligatoir ement une licence sur sa mar que, mais seulement de ne pas factur er des services non r endus
Sibony, Anne-Lise ULg

in Concurrences : Revue des Droits de la Concurrence (2009), 4

ECJ, 16.07.09, Der Grüne Punkt v.Commission, case C-385/07P : The ECJ confirms CFI judgement in relation to excessive licencing fees by the operator of the major recycling scheme in Germany / ECJ, 09.09 ... [more ▼]

ECJ, 16.07.09, Der Grüne Punkt v.Commission, case C-385/07P : The ECJ confirms CFI judgement in relation to excessive licencing fees by the operator of the major recycling scheme in Germany / ECJ, 09.09.09, Clearstream v.Commission, caseT-301/04 : The CFI confirms an abuse of dominant position consisting in hindering access to an essential facility and adopting discriminatory pricing / EC. Comm., 13.05.09, Intel, case COMP/C-3 /37.990 : The EC Commission inflicts the highest ever fine for an abuse consisting in offering to manufacturers rebates conditional on exclusivity and engaging in naked restrictions aimed at stopping components manufactured by competitor from reaching the market / Fr. NCA, 16.09.09, Mobile Telephony, Réunion-Mayotte, 09-MC-02 : The French Competition Authority orders the incumbent operator of mobile telecommunication services in the islands of La Réunion and Mayotte to cease abusive pricing practices. [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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