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See detailTask 4.0 – Subsystem Optimization of the Structure Scantling
Rigo, Philippe ULiege; Yerna, Olivier ULiege; Amrane, Amirouche ULiege

Report (2012)

In the present report concerning Task 4.0 – Subsystem Optimization of the Structure Scantling, the structural optimization of the ship is carried out. This optimization is performed with regard to the ... [more ▼]

In the present report concerning Task 4.0 – Subsystem Optimization of the Structure Scantling, the structural optimization of the ship is carried out. This optimization is performed with regard to the objective functions and the constraints defined in Deliverables 2.0 & 3.0 [1]. Task 4.0 is divided into three parts: - The initial scantling - The load cases and loadings - The optimized scantling This report presents the results and benefits of optimization. Comments and analysis are provided throughout the report. [less ▲]

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See detailLogiques de la translation. Corps-mouvement et objets-personnages dans les films des studios Pixar
Tomasovic, Dick ULiege

in Vertigo : Revue semestrielle d'Esthétique et d'Histoire du Cinéma (2012), n°42(Printemps), 66-74

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See detailLes "Litterae annuae" de la Compagnie de Jésus entre compte rendu factuel et construction identitaire : l’exemple de Bruxelles
Delfosse, Annick ULiege

in Rousseaux, Xavier (Ed.) Quatre siècles de présence jésuite à Bruxelles (2012, March)

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See detailNewsletter n° 5 - DACEFI 2
Meunier, Quentin; Moumbogou, Carl; Angwé, A. et al

E-print/Working paper (2012)

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See detailRisk assessment of Belgian adults for furan contamination through the food chain
Scholl, Georges ULiege; Humblet, Marie-France ULiege; Scippo, Marie-Louise ULiege et al

in Food Additives & Contaminants (2012), 29(3), 345-353

Risk assessment is an interdisciplinary process used to quantify the risk linked to a hazard. In the present paper it is applied to quantify the risk linked to furan ingestion through the food chain for ... [more ▼]

Risk assessment is an interdisciplinary process used to quantify the risk linked to a hazard. In the present paper it is applied to quantify the risk linked to furan ingestion through the food chain for the Belgian adult population. Two approaches, deterministic and probabilistic, were carried out in parallel. The deterministic method relied on a case study, whereas the probabilistic approach involved statistical distributions of contamination and consumption data to calculate a statistical distribution of the daily intake. First, the deterministic method revealed a low estimated daily intake (EDI) for the average population (380 ng*(kgbw*day)–1) and a huge contribution of coffee consumption to the EDI (55%). Increasing or decreasing the daily coffee consumption by one cup can affect the EDI by about 22%. Afterwards, the probabilistic approach showed that the average population has a low EDI (494 ng*(kgbw*day) 1), and that high contamination levels were only registered in a small proportion of the population. Finally, a comparison of the RfDchronic oral showed that less than 10% of the Belgian population had an EDI above the reference dose proposed by the USEPA; the majority of the population had an EDI 20% below the reference dose. The margin of exposure (MoE) approach indicated that the level of risk related to furan intake through ingestion is low, with a MoE>10,000 for more than 10% of the population and no result < 100. [less ▲]

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See detailDu traumatisme obstétrical à la désinsertion trachéale.
Lecomte, Laurie; DEMEZ, Pierre ULiege; François, Anne et al

Poster (2012, March)

Les désinsertions trachéales traumatiques néonatales sont exceptionnelles. Elles sont généralement associées à une intubation compliquée, mais quelques descriptions ont été faites de ruptures trachéales ... [more ▼]

Les désinsertions trachéales traumatiques néonatales sont exceptionnelles. Elles sont généralement associées à une intubation compliquée, mais quelques descriptions ont été faites de ruptures trachéales partielles dans le décours d’un traumatisme obstétrical. Quelle que soit l’étiologie de la lésion trachéale, la prise en charge peut être conservatrice (par cicatrisation « simple » autour d’un tube entotrachéal) ou chirurgicale (par réparation des lésions). [less ▲]

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See detailParlons du temps !
Billen, Roland ULiege

Article for general public (2012)

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See detailSMALL SAMPLE SIZE CAPABILITY INDEX FOR ASSESSING VALIDITY OF ANALYTICAL METHODS
Rozet, Eric ULiege; Boulanger, B.; Ziemons, Eric ULiege et al

Poster (2012, March)

Analytical method’s capability evaluation can be a useful methodology to assess the fitness of purpose of these methods for their future routine application. However, care on how to compute the capability ... [more ▼]

Analytical method’s capability evaluation can be a useful methodology to assess the fitness of purpose of these methods for their future routine application. However, care on how to compute the capability indices has to be made. Indeed, the commonly used formulas to compute capability indices such as Cpk, will highly overestimate the true capability of the methods. Especially during methods validation or transfer, there are only few experiments performed and, using in these situations the commonly applied capability indices to declare a method as valid or as transferable to a receiving laboratory will conduct to inadequate decisions. In this work, an improved capability index, namely Cpk-tol and the corresponding estimator of proportion of non conforming results (tolCpk−π) is proposed. Through Monte-Carlo simulations, they have been shown to greatly increase the estimation of analytical methods capability in particular in low sample size situations as encountered during methods validation or transfer. Additionally, the usefulness of this capability index is illustrated through several case studies. [less ▲]

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See detailRelationship between sedimentary features and permeability at different scales in the Brussels Sands
Possemiers, Mathias; Huysmans, Marijke; Peeters, Luk et al

in Geologica Belgica (2012), 15(3), 156-164

The Brussels Sands display a complex three-dimensional subsurface architecture. This sedimentological heterogeneity induces a highly heterogeneous spatial distribution of hydrogeological parameters at ... [more ▼]

The Brussels Sands display a complex three-dimensional subsurface architecture. This sedimentological heterogeneity induces a highly heterogeneous spatial distribution of hydrogeological parameters at different scales and may consequently influence subsurface fluid flow and solute migration. This study aims at characterizing spatial variability of permeability at different scales in the Brussels Sands. Firstly, a literature review on the permeability distribution of the Brussels Sands was performed. Secondly, a field campaign was carried out consisting of field observations of the small-scale sedimentary structures and in situ measurements of air permeability. A total of 6550 cm-scale air permeability measurements were carried out in situ in three Brussels Sands quarries in the central part of Belgium: Bierbeek, Mont Saint Guibert and Chaumont Gistoux. On the large basin scale, substantial differences in permeability are observed. A literature data analysis shows that there is no clear correlation between hydraulic conductivity and sedimentary facies. At the small scale, results show that permeability heterogeneity and anisotropy are strongly influenced by sedimentary heterogeneity in all three quarries. Clay-rich sedimentary features such as bottomsets and distinct mud drapes exhibit a different statistical and geostatistical permeability distribution compared to the cross-bedded lithofacies, where the permeability anisotropy is dominated by the foreset lamination orientation. [less ▲]

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See detailPrematurity and Bone Health
SENTERRE, Thibault ULiege

in 1st International Conference on Nutrition and Growth (2012, March)

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See detailTechniques spectroscopiques pour comprendre les interactions entre des molécules biologiques et des modèles membranaires
Nasir, Mehmet Nail ULiege

Scientific conference (2012, March)

De nombreux processus biochimiques impliquent une interaction entre la membrane plasmique et une molécule agissant sur celle-ci. Les peptides antimicrobiens constituent un bel exemple pour les molécules ... [more ▼]

De nombreux processus biochimiques impliquent une interaction entre la membrane plasmique et une molécule agissant sur celle-ci. Les peptides antimicrobiens constituent un bel exemple pour les molécules actives sur la membrane. Notre but est de comprendre les interactions de ces peptides avec la membrane plasmique de leurs cellules cibles. En raison de la complexité de la membrane rendant difficile la compréhension de ces processus, nous avons recours à des systèmes plus simples appelée modèles membranaires. Les modèles membranaires sont donc analysés en absence et en présence des peptides antimicrobiens par différentes techniques spectroscopiques afin d’obtenir des informations à l’échelle moléculaire. La présentation revisite ces techniques d’analyse en mettant en évidence leurs potentialités [less ▲]

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See detailEt pourtant ils coopèrent. Regard des sciences sociales sur la coopération animale
Servais, Véronique ULiege

in Terrain : Revue d'Ethnologie de l'Europe (2012), 58

Behavioural bioloigists find it difficult to explain the evolution of cooperation among non kin from a strict natural selection point of view. Rather than questionning the paradigm itself, even though it ... [more ▼]

Behavioural bioloigists find it difficult to explain the evolution of cooperation among non kin from a strict natural selection point of view. Rather than questionning the paradigm itself, even though it only involves a part of the theroy of evolution, they add variables to the theory as, for example, the fact that cheaters will be found out and punished. By contrast, on the basis of the studies of cooperation among primates, and in terms of the resonses of monkeys in the tests to which they are subjected, I stress how difficult it is to study cooperation among primates outiside the social and emotional context which, in turn, it serves to define. Finally, I prpose that primatology should be open to social science approaches, so that it considers monkeys and apes as actors in interactions rather than as organisms simply carrying out strategis which have been inscribed in them by evolution. [less ▲]

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See detailStructure modifying effects of strontium ranelate in knee osteoarthritis
Reginster, Jean-Yves ULiege; Chapurlat, R; Christiaensen, C et al

in Osteoporosis International (2012, March), 23(S2), 58-59

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See detailNumerical and physical hydraulic modelling of Piano Key Weirs
Erpicum, Sébastien ULiege; Machiels, Olivier ULiege; Dewals, Benjamin ULiege et al

in Proceedings of the 4th Int. Conf. on Water Resources and Renewable Energy Development in Asia (2012, March)

During the last few years, several piano key weirs (PKWs) have been built in France by Electricité de France (EDF). Thanks to the reduced footprint and high release capacities of this new type of weir ... [more ▼]

During the last few years, several piano key weirs (PKWs) have been built in France by Electricité de France (EDF). Thanks to the reduced footprint and high release capacities of this new type of weir, making it particularly suited for concrete dams rehabilitation, lots of other projects in varied countries are under construction or study. The prototype use of PKW requires knowledge about its structural behaviour, hydraulic capacities as well as integration into dams’ environment. This paper aims at presenting numerical and physical modelling works performed at the University of Liege to address the last two points. In particular, large scale physical modelling and parametric scale models enabled to understand the hydraulic behaviour of the structure and to highlight its main geometric parameters as well as their best variation interval depending on various criteria related to the weir design (discharge efficiency, cost…). A 1D numerical model has also been developed based on these experimental investigations. It enables to predict in a few minutes, with 10% accuracy, the discharge capacity of a given PKW geometry on its usual operation head range. This model, available as a freeware on http://www.pk-weirs.ulg.ac.be, constitutes a key tool for the first design of such weirs. Finally, the scale model studies of major projects such as Raviège dam (France) for EDF and Ouldjet Mellegue Project (Algeria) for Coyne et Bellier – Tractebel Engineering enable to confront theoretical predictions with experimental results and to address the problem of PKW integration on dam crests. [less ▲]

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See detailDeterminants of sickness absence duration after an occupational back injury in the Belgian population
Mazina, Déogratias; Donneau, Anne-Françoise ULiege; Mairiaux, Philippe ULiege

in American Journal of Industrial Medicine (2012), 55(3), 270-280

Background This study aimed at assessing factors associated to the duration of sickness absence after a back injury in the Belgian working population, with a special emphasis on cultural factors. Methods ... [more ▼]

Background This study aimed at assessing factors associated to the duration of sickness absence after a back injury in the Belgian working population, with a special emphasis on cultural factors. Methods The data were retrieved from the Belgian Fund for Work Accidents database over a three-year period (2001-2003). The population source involved all Belgian workers under a job contract in the private sector registered as compensated cases for an accident that occurred at the workplace (n=558276). From that database, all back injury cases involving a complete data set and registered during the first 6 months of each year (n= 11262) were selected and eight factors (gender, age, seniority in the current job, job category, accident regional location, enterprise size, sector of activity and accident circumstances) were analyzed in relation to the outcome variable, sick leave duration recorded as ordered time intervals between 0 day and 183-366 days. Results Sick leave duration was strongly associated in a multivariate model to age (>= 40 years: OR=2.18), blue collar job (1.55), work in building industry (1.32) and enterprise size (>100 : 0.85), and to a less extent to seniority (>10y: 0.88), and circumstance of accident (falls: 1.26). Injuries occurring in the French-speaking part of the country were associated to a longer sick leave (1.07; p=0.034). Conclusions This study shows that besides well-known risk factors, subtle cultural language-linked factors and/or regional differences in economic climate may significantly influence the length of disability period after a back injury. [less ▲]

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See detailSpurious oscillations in generalized-alpha time integration methods
Arnold, Martin; Bruls, Olivier ULiege; Cardona, Alberto

Conference (2012, March)

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See detailThe usefulness of Ion Mobility-Mass Spectrometry for Small Molecules Analysis
Far, Johann ULiege; Goscinny, Séverine ULiege; Joly, Laure et al

Conference (2012, March)

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See detailDu laisser-faire au pilotage stratégique ?
Croché, Sarah; Fallon, Catherine ULiege

Article for general public (2012)

Présentée comme un instrument clé de la compétitivité régionale depuis la fi n des années nonante, la recherche est l’objet de nombreuses initiatives politiques nationales et européennes. Notamment ... [more ▼]

Présentée comme un instrument clé de la compétitivité régionale depuis la fi n des années nonante, la recherche est l’objet de nombreuses initiatives politiques nationales et européennes. Notamment produite au sein des universités, elle est censée contribuer à la compétitivité de l’Europe sur la scène mondiale et libérer le potentiel d’innovation européen. La note Marcourt propose un renouveau partiel des formes de gouvernance des politiques de recherche en Communauté française qui s’inscrit dans les réformes préconisées par les autorités européennes pour créer l’espace européen de la recherche avec le risque d’un découplage entre recherche et enseignement. Sans compter que ce projet ne dit rien sur le partage des ressources entre équipes universitaires. [less ▲]

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