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See detailFluid-structure interaction effects in the dynamic response of free-standing plates to uniform shock loading
Kambouchev, Nayden; Radovitzky, Raúl; Noels, Ludovic ULg

in Journal of Applied Mechanics (2007), 74

The problem of uniform shocks interacting with free-standing plates is studied analytically and numerically for arbitrary shock intensity and plate mass. The analysis is of interest in the design and ... [more ▼]

The problem of uniform shocks interacting with free-standing plates is studied analytically and numerically for arbitrary shock intensity and plate mass. The analysis is of interest in the design and interpretation of fluid–structure interaction (FSI) experiments in shock tubes. In contrast to previous work corresponding to the case of incident blast profiles of exponential distribution, all asymptotic limits obtained here are exact. The contributions include the extension of Taylor’s FSI analysis for acoustic waves, the exact analysis of the asymptotic limits of very heavy and very light plates for arbitrary shock intensity, and a general formula for the transmitted impulse in the intermediate plate mass range. One of the implications is that the impulse transmitted to the plate can be expressed univocally in terms of a single nondimensional compressible FSI parameter. [less ▲]

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See detailLes mondes disparus
Jaminon, Martine ULg; Poty, Edouard ULg; Vercheval, Catherine

Learning material (2007)

Evolution géographique et de la biodiversité de la Grande Région du Cambrien au cénozoïque,en français et en allemand

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See detailCent ans d’instrumentalisation de Léopold II, symbole controversé de la présence belge en Afrique centrale.
Vandersmissen, Jan ULg

in Jahan, S.; Ruscio, A. (Eds.) Histoire de la colonisation: falsifications et instrumentalisations. (2007)

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See detailLibéralisations, privatisations, régulations. Aspects juridiques et économiques des régulations sectorielles. Marchés financiers - Télécoms - Médias - Santé
Thirion, Nicolas ULg

Book published by Larcier (2007)

Le présent ouvrage consiste à examiner de façon systématique la manière dont l’organisation et le fonctionnement de certains secteurs économiques ou quasi-économiques (marchés financiers, télécoms, médias ... [more ▼]

Le présent ouvrage consiste à examiner de façon systématique la manière dont l’organisation et le fonctionnement de certains secteurs économiques ou quasi-économiques (marchés financiers, télécoms, médias et santé) sont conçus au moyen de systèmes de régulation, par opposition, d’une part, à l’abandon de ces secteurs au seul jeu des forces du marché et, d’autre part, au dirigisme étatique pur et simple. Les secteurs privilégiés ont ceci en commun que les intérêts et les valeurs qui y sont en jeu peuvent être très divers, voire contradictoires. Il importe que certains de ces intérêts et valeurs ne soient pas sacrifiés au profit des autres et d’assurer dès lors un équilibre entre eux. L’instauration et le développement d’instances de régulation sont-ils susceptibles de garantir efficacement cet équilibre fondamental ? Telle est la question à laquelle tente de répondre le présent ouvrage, en dressant une présentation critique, aussi bien sous l’angle juridique que dans une perspective économique, des régulations sectorielles mises en place. Les auteurs, juristes et économistes issus des pôles universitaires de Rennes et de Liège, sont des spécialistes reconnus de la régulation comme nouveau mode d’organisation des rapports entre le marché et l’État. [less ▲]

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See detailLe marché et l'Etat à l'heure de la mondialisation
Thirion, Nicolas ULg

Book published by Larcier - Actes du 1er colloque David-Constant de la Faculté de droit de l'Université de Liège (2007)

Ouvrage collectif reprenant les actes du 1er Colloque David-Constant de la Faculté de droit de l'Université de Liège, consacré aux mutations juridiques relatives aux changements affectant les rapports ... [more ▼]

Ouvrage collectif reprenant les actes du 1er Colloque David-Constant de la Faculté de droit de l'Université de Liège, consacré aux mutations juridiques relatives aux changements affectant les rapports entre logique de marché et logique publique [less ▲]

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See detailNutrition index and soil nitrate residues in grazed pastures fertilised with mineral fertiliser, pig slurry or cattle compost
Dufrasne, Isabelle ULg; Meura, S.; Cabaraux, Jean-François ULg et al

in Proceedings of the British Society of Animal Science (2007)

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See detailPattern-learning and pattern-description : An integrated approach to proficiency and research for students of English
Brems, Lieselotte ULg; Olivier, Nele

in Corpora in the foreign language classroom. Selected papers from the Sixth International Conference on Teaching and Language Corpora (TaLC) (2007)

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See detailImpact of iron and steel industry and waste incinerators on human exposure to dioxins, PCBs, and heavy metals: results of a cross-sectional study in Belgium.
Fierens, Sebastien; Mairesse, Helene; Heilier, Jean-Francois et al

in Journal of Toxicology and Environmental Health. Part A (2007), 70(3-4), 222-6

We evaluated the impact of two iron and steel plants and two municipal solid waste incinerators (MSWI) in Wallonia (Belgium) on the exposure of residents to dioxins, polychlorinated biphenyls (PCBs), and ... [more ▼]

We evaluated the impact of two iron and steel plants and two municipal solid waste incinerators (MSWI) in Wallonia (Belgium) on the exposure of residents to dioxins, polychlorinated biphenyls (PCBs), and heavy metals. In total, 142 volunteers living around these facilities were recruited and compared with 63 referents from a rural area with no industrial source of pollution. Information about smoking habits, dietary habits, anthropometric characteristics, residential history, and health status was obtained from a self-administered questionnaire. The volunteers provided blood under fasting conditions in order to evaluate the body burden of dioxins (17 polychlorinated dibenzo-p-dioxins/dibenzofurans [PCDD/Fs] congeners) and PCBs. Samples of blood and urine were also taken for the determination of cadmium, mercury, and lead. After adjustment for covariates, concentrations of cadmium, mercury, and lead in urine or blood were not increased in subjects living in the vicinity of MSWIs or sinter plants by comparison with referents. Residents around the sinter plants and the MSWI located in the industrial area had concentrations of dioxins and PCBs in serum similar to that of referents. By contrast, subjects living in the vicinity of the MSWI in the rural area showed significantly higher serum levels of dioxins (geometric mean, 38 vs. 24 pg TEQ/g fat) and coplanar PCBs (geometric mean, 10.8 vs. 7.0 pg TEQ/g fat). Although age-adjusted dioxin levels in referents did not vary with local animal fat consumption, concentrations of dioxins in subjects living around the incinerators correlated positively with their intake of local animal fat, with almost a doubling in subjects with the highest fat intake. These results indicate that dioxins and coplanar PCBs emitted by MSWIs can indeed accumulate in the body of residents who regularly consume animal products of local origin. [less ▲]

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See detailMechanical based circular notch hinge design
Merken, Patrick; Smal, Olivier; Debongnie, Jean-François ULg et al

Report (2007)

At the microscale, classical bearings such as ball bearings, sliding bearings and other pivots may be difficult to manufacture. Among all possible solutions to replace them, the notch hinge seems to be ... [more ▼]

At the microscale, classical bearings such as ball bearings, sliding bearings and other pivots may be difficult to manufacture. Among all possible solutions to replace them, the notch hinge seems to be very attractive through its many advantages. The major limitation is on the rotation angle. This paper presents a new simplified analytical model for the prediction of the maximum angular displacement and the angular stiffness of a notch hinge. To validate our model, an experimental set-up has been developed. Finally, the results are compared to other theories. [less ▲]

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See detailPolymorphic miRNA-mediated gene regulation: contribution to phenotypic variation and disease.
Georges, Michel ULg; Coppieters, Wouter ULg; Charlier, Carole ULg

in Current opinion in genetics & development (2007), 17(3), 166-76

The expression of at least a third of mammalian genes is post-transcriptionally fine-tuned by approximately 1000 microRNAs (miRNAs), assisted by the RNA silencing machinery, comprising tens of components ... [more ▼]

The expression of at least a third of mammalian genes is post-transcriptionally fine-tuned by approximately 1000 microRNAs (miRNAs), assisted by the RNA silencing machinery, comprising tens of components. Polymorphisms and mutations in the corresponding sequence space (machinery, miRNA precursors and target sites) are likely to make a significant contribution to phenotypic variation, including disease susceptibility. Here we review basic miRNA biology in animals, survey the available evidence for DNA sequence polymorphisms affecting miRNA-mediated gene regulation and thus phenotype, and discuss their possible importance in the determination of complex traits. [less ▲]

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See detailUrban Ontologies for an improved communication in urban civil engineering projects
Teller, Jacques ULg; Keita, Abdelkader; Roussey, Catherine et al

in Cybergeo : Revue Européenne de Géographie = Cybergeo - European Journal of Geography (2007)

In this paper, we presented the Towntology project whose objective is to design an ontology in the urban field. This project is divided into several stages. Concerning the prime main objective of the ... [more ▼]

In this paper, we presented the Towntology project whose objective is to design an ontology in the urban field. This project is divided into several stages. Concerning the prime main objective of the Towntology project, i.e. to build an ontology for urban planning by integrating all urban objects with their descriptions and relations, we began to deal with some fields, such as street planning and mobility. We also developed a software tool making it possible to urban planners to work on a semantic network. Thus we built a visual browser and an ontology editor. An extension of XML is designed and used for the description of the ontology. [less ▲]

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See detailA Finite Volume Spatial Discretisation for taxis-diffusion-reaction systems with axi-symmetry: application to fracture healing
Gerisch, Alf; Geris, Liesbet ULg

in Deutsch, A.; Brusch, L.; Byrne, H. (Eds.) et al Advances in Mathematical Modeling of Biological Systems (2007)

We consider the numerical simulation of a time-dependent taxis-diffusion-reaction model of fracture healing in mice using the method of lines. The partial differential equation problem has an axi ... [more ▼]

We consider the numerical simulation of a time-dependent taxis-diffusion-reaction model of fracture healing in mice using the method of lines. The partial differential equation problem has an axi-symmetric structure and this is employed to properly reduce the model to an equivalent problem in two-dimensional (2D) space leading subsequently to an efficient spatial discretisation. Special care is given to respect conservation of mass and the non-negativity of the solution. The numerical simulation results are contrasted to those obtained from a simplistic reduction of the axi-symmetric model to 2D space (at the same computational cost).We observe quantitative and qualitative differences. [less ▲]

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See detailTime-optimal control of a 3-level quantum system and its generalization
Chang, Dong Eui; Sepulchre, Rodolphe ULg

in Dynamics of Continuous, Discrete and Impulsive Systems Series (2007), 14

We solve the problem of steering a three-level quantum system from one eigen- state to another in minimum time and study its possible extension to the time-optimal control problem for a general n-level ... [more ▼]

We solve the problem of steering a three-level quantum system from one eigen- state to another in minimum time and study its possible extension to the time-optimal control problem for a general n-level quantum system. For the three-level system we find all optimal controls by finding two types of symmetry in the problems: Z2 ×S3 discrete sym- metry and S1 continuous symmetry, and exploiting them to solve the problem through discrete reduction and symplectic reduction. We then study the geometry, in the same framework, which occurs in the time-optimal control of a general n-level quantum system. [less ▲]

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See detailThe murine gammaherpesvirus-68 gp150 acts as an immunogenic decoy to limit virion neutralization.
Gillet, Laurent ULg; May, Janet S; Colaco, Susanna et al

in PLoS ONE (2007), 2(1), 705

Herpesviruses maintain long-term infectivity without marked antigenic variation. They must therefore evade neutralization by other means. Immune sera block murine gammaherpesvirus-68 (MHV-68) infection of ... [more ▼]

Herpesviruses maintain long-term infectivity without marked antigenic variation. They must therefore evade neutralization by other means. Immune sera block murine gammaherpesvirus-68 (MHV-68) infection of fibroblasts, but fail to block and even enhance its infection of IgG Fc receptor-bearing cells, suggesting that the antibody response to infection is actually poor at ablating virion infectivity completely. Here we analyzed this effect further by quantitating the glycoprotein-specific antibody response of MHV-68 carrier mice. Gp150 was much the commonest glycoprotein target and played a predominant role in driving Fc receptor-dependent infection: when gp150-specific antibodies were boosted, Fc receptor-dependent infection increased; and when gp150-specific antibodies were removed, Fc receptor-dependent infection was largely lost. Neither gp150-specific monoclonal antibodies nor gp150-specific polyclonal sera gave significant virion neutralization. Gp150 therefore acts as an immunogenic decoy, distorting the MHV-68-specific antibody response to promote Fc receptor-dependent infection and so compromise virion neutralization. This immune evasion mechanism may be common to many non-essential herpesvirus glycoproteins. [less ▲]

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See detailGlobalisation
Geuens, Geoffrey ULg

in Quaderni : la Revue de la Communication (2007), 63 ("Nouveaux mots du pouvoir. Fragments d'un abécédaire")(printemps), 51-53

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See detailRaman and infrared spectra of multiferroic bismuth ferrite from first principles
Hermet, Patrick ULg; Goffinet, Marco ULg; Kreisel, J. et al

in Physical Review. B, Condensed Matter and Materials Physics (2007), 75

The entire zone-center phonon spectrum of the R3c ferroelectric antiferromagnetic phase of bismuth ferrite is computed using a first-principles approach based on density functional theory. Two phonon ... [more ▼]

The entire zone-center phonon spectrum of the R3c ferroelectric antiferromagnetic phase of bismuth ferrite is computed using a first-principles approach based on density functional theory. Two phonon modes exhibiting eigendisplacement vectors that strongly overlap with the atomic distortions taking place at the ferroelectric structural phase transition are identified and give support to a transition with displacive character. Both Raman and infrared reflectivity spectra are also computed, providing benchmark theoretical results for the assignment of experimental spectra. [less ▲]

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See detailNeuropsychiatric syndromes in dementia - Results from the European Alzheimer Disease Consortium: Part I
Aalten, Pauline; Verhey, Frans R. J.; Boziki, Marina et al

in Dementia & Geriatric Cognitive Disorders (2007), 24(6), 457-463

Background/Aims: The aim of this study was to identify neuropsychiatric subsyndromes of the Neuropsychiatric Inventory in a large sample of outpatients with Alzheimer's disease (AD). Methods: Cross ... [more ▼]

Background/Aims: The aim of this study was to identify neuropsychiatric subsyndromes of the Neuropsychiatric Inventory in a large sample of outpatients with Alzheimer's disease (AD). Methods: Cross-sectional data of 2,354 patients with AD from 12 centres from the European Alzheimer's Disease Consortium were collected. Principal component analysis was used for factor analysis. Results: The results showed the presence of 4 neuropsychiatric subsyndromes: hyperactivity, psychosis, affective symptoms and apathy. The subsyndrome apathy was the most common, occurring in almost 65% of the patients. Conclusion: This large study has provided additional robust evidence for the existence of neuropsychiatric subsyndromes in AD. Copyright (c) 2007 S. Karger AG, Basel. [less ▲]

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