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See detailEnzymatic interesterification of palm oil and fractions: monitoring the degree of interesterification using different methods.
De Clercq, Nathalie; Danthine, Sabine ULiege; Nguyen, Mai et al

Poster (2011, September)

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See detailCirculation atmosphérique simulée par les modèles de circulation générale en Europe de l'ouest : évaluation et projections futures
Belleflamme, Alexandre ULiege; Fettweis, Xavier ULiege; Erpicum, Michel ULiege

in Fazzini, Massimiliano; Beltrando, Gérard (Eds.) XXIVème colloque de l'Association Internationale de Climatologie - Climat montagnard et risques (2011, September)

Atmospheric circulation simulations from general circulation models are used as forcing for downscaling methods and for future projections. Thus, it is essential to evaluate them. An automatic circulation ... [more ▼]

Atmospheric circulation simulations from general circulation models are used as forcing for downscaling methods and for future projections. Thus, it is essential to evaluate them. An automatic circulation type classification is applied to daily 500 hPa geopotential height data. Firstly, the classification is done for the NCEP-NCAR 1 reanalysis, and then the main circulation types are imposed to the simulations of six general circulation models. For recent climate (20C3M scenario), it appears that most models are not able to simulate well the circulation over western Europe, due to biases in the mean geopotential height and an underestimation of the circulation variability. For future climate (A1B scenario), a general increase of the geopotential height is projected, leading to the emergence of new circulation types. [less ▲]

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See detailMeasured and computed solute transport behaviour in the saturated zone of a fractured and slightly karstified chalk aquifer
Dassargues, Alain ULiege; Goderniaux, Pascal ULiege; Daoudi, Moubarak et al

in Bertrand, C.; Carry, N.; Mudry, J. (Eds.) et al Proc. H2Karst, 9th Conference on Limestone Hydrogeology (2011, September)

Solute transport in the saturated zone of a micro-fissured, fractured and even locally slightly karstified aquifer has been studied by multi-tracer tests in groundwater convergent flow conditions to ... [more ▼]

Solute transport in the saturated zone of a micro-fissured, fractured and even locally slightly karstified aquifer has been studied by multi-tracer tests in groundwater convergent flow conditions to pumping wells or towards a collecting gallery. Different behaviour has been detected that can be described by three kinds of typical breakthrough curves: (a) transport with a dominant advective component, producing narrow and symmetrical observed breakthrough curves, characteristic of solute transport in open fractures or conduits; (b) transport with significant advective and dispersive components exhibiting more spread-out breakthrough curves, with also non-symmetrical trends caused by retardation effects; (c) transport with a dominant dispersive component, showing mostly a flat breakthrough curve where dispersion and possible immobile water effects are difficult to be separated. These results were synthesized from thirty-five injections of tracers, distributed between 11 sites. Groundwater flow and solute transport are simulated and illustrated here for one example, employing the finite element code HYDROGEOSPHERE, and using two ways for representing the fracture zones: highly contrasting hydraulic conductivity zones with a classical REV approach and discrete fractures combined with a porous medium by the use of a dual approach. Results are particularly illustrative to show that detailed parameterization and calibration of such a local situation remain difficult even on the basis of an extensive data sets from many tracer tests. [less ▲]

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See detailHow clinical nutrition helps pets suffering from acute and chronic diseases- practical examples and prospects
Diez, Marianne ULiege; Ricci, Rebecca

in TSAVA (Ed.) 17th FECAVA Eurocongress 6th TSAVA Congress Modern Veterinary Practices Congress Book (2011, September)

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See detailProduction of biodegradable polyesters from industrial and agricultural by-products
de Almeida, C.; Calvaheiro, J.; Raposo, R. et al

Conference (2011, September)

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See detailNEONATAL INVASIVE GROUP B STREPTOCOCCAL (GBS) INFECTIONS IN EUROPE
MELIN, Pierrette ULiege; Berner, Reinhard; Afshar, Baharak et al

Poster (2011, September)

Objectives: To describe clinical characteristics and capsular type of GBS isolates responsible of invasive infections in infants from Belgium, Bulgaria, Czech-Republic, Denmark, Germany, Italy, Spain and ... [more ▼]

Objectives: To describe clinical characteristics and capsular type of GBS isolates responsible of invasive infections in infants from Belgium, Bulgaria, Czech-Republic, Denmark, Germany, Italy, Spain and United Kingdom, representing one of the main objectives of the DEVANI (DEsign of a Vaccine Against Neonatal Infections) project. Methods: Surveillance of invasive GBS infections in infants was performed from mid-2008 through December 2010. For each case, a standardized case report form was filled. Samples from cases were processed using local procedures. GBS isolates were characterised in national central labs using standardised type-specific (Ia, Ib-IX) latex agglutination and molecular typing methods. Results: Data on 188 infants with invasive infection were analysed: 144 (60.6%) early onset diseases (EOD) and 74 (39.4%) late onset diseases (LOD). In EOD, mean/median ages at onset were 14/0 hours and the male:female ratio was 1.25. The predominant manifestation at onset was respiratory distress (42% cases); 83% cases were associated with sepsis/bacteremia, 15% with pneumonia and 6% with meningitis. Late-prenatal screening cultures were obtained from 51% of cases’ mothers and only half of these were positive for GBS. Non-elective C-section, intrapartum fever and rupture of membrane (>18h) were more frequent in EO-cases’ mothers versus healthy babies’ GBS-positive mothers. The major serotypes were III (43%), V (21%) and Ia (18%). In LOD, mean/median ages at onset were 42/34 days and the male:female ratio was 0.9. The predominant characteristic at onset was fever (62% cases); 70% cases were associated with sepsis and 30% with meningitis. Very rare manifestations were osteomyelitis and cellulitis. Serotype III was highly predominant (80.6%) followed mainly by Ia (12.5%). Death rates were 4.7/1.5% in EOD/LOD. Conclusions: Clinical presentations were associated with age at onset of infection. Serotype III predominated in neonatal infections. Prenatal screening was not universal neither sensitive. Study funded through the European Commission Seventh Framework. [less ▲]

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See detailThe effect of symmetric/asymmetric TAG ratio on the crystallization properties and storage stability of fat blends
De Graef, V.; Vereecken, J.; Danthine, Sabine ULiege et al

Conference (2011, September)

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See detailDetection of food antigens in dog foods used as elimination diets
Ricci, Rebecca; Granato, A; Palagiano, C et al

in Castrillo, Carlos (Ed.) Congress Proceedings 15th Congress ESVCN (2011, September)

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See detailPosidonia meadow: an ecosytem engineer from living plant to dead leaf accumlation
Gobert, Sylvie ULiege

Conference (2011, September)

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See detailA draft for a typology of urban observatories
Farah, Jihad ULiege

Conference (2011, September)

Urban observatories represent today a global phenomenon. In the last decades, public actors, universities and civil society actors have established hundreds of urban observatories all around the world ... [more ▼]

Urban observatories represent today a global phenomenon. In the last decades, public actors, universities and civil society actors have established hundreds of urban observatories all around the world. Some of these observatories actively contribute to the analysis of urban dynamics and affect urban policy making. However, urban observatories are still understudied; the scientific literature on urban observatories is rare and culturally fragmented. This article seeks to contribute to the development of a body of knowledge on urban observatories, by proposing a typology of urban observatories that stress the potential impacts and contributions of four different archetypes on urban and territorial planning and management. [less ▲]

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See detailDumping social au sein de l'Union européenne
Defossez, Alexandre ULiege

Conference (2011, September)

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See detailImpurity fingerprints for the identification of counterfeit medicines - a feasibility study
Sacré, Pierre-Yves ULiege; Deconinck, Eric; Daszykowski, Michal et al

Poster (2011, September)

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See detailSeagrass response to in situ trace element contaminations
Richir, Jonathan ULiege; Luy, Nicolas; Lepoint, Gilles ULiege et al

Poster (2011, September)

The Mediterranean seagrass Posidonia oceanica (L.) Delile has been widely used since the mid-seventies as bioindicator to monitor trace element (TE) coastal pollution. However, there is a lack of ... [more ▼]

The Mediterranean seagrass Posidonia oceanica (L.) Delile has been widely used since the mid-seventies as bioindicator to monitor trace element (TE) coastal pollution. However, there is a lack of knowledge regarding to that seagrass contamination and decontamination kinetics. For the first time, Posidonia were experimentally in situ contaminated in 2009, at 10m depth in Calvi Bay (Corsica), by a mix of 15 TE (Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Mo, Ag, Cd, Pb and Bi). Trace element concentrations were measured by DRC-ICP-MS in leaves, rhizomes and in overall shoots sampled at regular time intervals. P. oceanica immediately accumulated pollutants from the beginning of experiments; once contaminations ended, TE concentrations came back close to their original levels within 2 weeks, or at least showed a clear decrease. Posidonia leaves exhibited different uptake kinetics for many elements (Cr, Cu, Zn, Ag, Cd, Pb and Bi): the younger growing leaves incorporated chemicals more rapidly than the older ones. Rhizomes did not show any clear trend, except for Cu, Zn and Bi. These results demonstrate that Posidonia is a very sensitive sentinel to immediately delineate punctual pollutions similar to what might be measured in contaminated Mediterranean waters. The very good response of Posidonia leaves to pollutant short term expositions suggests their routine use in regularly scheduled monitoring programs. Nevertheless, to by-pass Posidonia leaves deciduous character and their capability to detoxify rapidly, long term accumulation recordings also necessitate below-ground tissues analyses. [less ▲]

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See detailMALDI Mass Spectrometry Imaging for the Screening of Epithelial Ovarian Cancer Biomarkers.
Boyon, Charlotte; Longuespée, Rémi ULiege; Kerdraon, Olivier et al

Poster (2011, September)

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See detailPalaeocological reconstruction of the dinosaur site of Vallazmorra (Burgos) based on palynological data
Villanueva-Amadoz, Uxue; Diez, José B.; Pérez-Arlucea, Marta et al

Conference (2011, September)

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See detailDetection of Defects in Concrete With Ground Penetrating Radar
Van der Wielen, Audrey ULiege; Courard, Luc ULiege; Nguyen, Frédéric ULiege

in ESPSC 2011: European Symposium on Polymers in Sustainable Construction (Czarnecki Symposium) (2011, September)

Ground Penetrating Radar (GPR) is a nondestructive technique particularly well adapted to the inspection of concrete structures and can help to determine the structure inner geometry or to detect damaged ... [more ▼]

Ground Penetrating Radar (GPR) is a nondestructive technique particularly well adapted to the inspection of concrete structures and can help to determine the structure inner geometry or to detect damaged areas. When the GPR is used on structures containing thin layers, for example the sealing layer of a bridge or the void into a masonry wall, it is important for the radar user to know the minimum thickness required to detect and estimate the thickness of those layers. The theory of thin layer detection is based on a sine wave but, in reality, the GPR emits a complicated pulse, which undergoes attenuation into the layer. To see the influence of those realistic conditions on the reflection coefficient of a thin layer, we combined experimental measurements and numerical FDTD simulations. The experimental results matched the numerical predictions well, presenting a fast attenuation compared to the theoretical predictions. Nevertheless, for thicknesses inferior to λ/11, the reflection coefficient could still be considered as linearly dependent of the thickness to wavelength ratio. [less ▲]

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See detailTotal fat content and essential fatty acids profile in 46 dry dog foods
Ricci, Rebecca; Paligot, Michele ULiege; Dequenne, Marjorie ULiege et al

in Castrillo, Carlos (Ed.) Congress Proceedings 15th Congress ESVCN (2011, September)

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See detailRural electrification through decentralized concentrating solar power: technological and socio-economic aspects
Quoilin, Sylvain ULiege; Orosz, Matthew

in Proceedings of the 6th Dubrovnik Conference on Sustainable Development of Energy, Water and Environment Systems (2011, September)

This paper presents the development of small-scale solar Organic Rankine Cycle for rural electrification in remote areas of Lesotho. It is subdivided in two parts. The first part deals with the success ... [more ▼]

This paper presents the development of small-scale solar Organic Rankine Cycle for rural electrification in remote areas of Lesotho. It is subdivided in two parts. The first part deals with the success conditions of decentralized rural electrification projects. Through a literature survey, different guiding principles and recommendations are formulated. The second part of the paper describes the proposed system. This system is designed in agreement with the above recommendations. [less ▲]

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See detailDescription of Fish Mobility and Habitat Use in a Large Regulated Fast Flowing River (the Rhône River, France) Using Fine Scale Acoustic Tracking
Bergé, Julien; Capra, Hervé; Pella, Hervé et al

Conference (2011, September)

Understanding fine scale behavioral responses of fish to changes in abiotic characteristics of streams (in term of flow and water temperature) is an interesting innovative issue to improve river ... [more ▼]

Understanding fine scale behavioral responses of fish to changes in abiotic characteristics of streams (in term of flow and water temperature) is an interesting innovative issue to improve river management of highly disturbed large rivers. Acoustic telemetry system have become an essential technology for such studies involving continuous (per second) and accurate tracking of fish movements. In the Rhône River (France), important hydrology and thermal contrasts are mainly explicated by the succession of dams and nuclear power plant from the Leman Lake (Switzerland). In this context, it is likely that fish are compelled to adapt their behaviour and their habitat selection in this changing environment. In order to test this hypothesis, a fixed acoustic telemetry survey was performed in the Rhône River during summer 2009 in front of the Bugey nuclear power plant which released warmed water within the river. A study site of 1.8 km long and 140 m wide was monitored using 32 hydrophones developed by HTI® (Hydroacoustic Technology Inc.). Sixty two fish mainly belonging to three species barbel (Barbus barbus), chub (Leuciscus cephalus) and wels catfish (Silurus glanis) were marked with acoustic tags (307 KHz; pulse rate ~ 3 sec.) and followed continuously during 89 days. Fish positions were coupled with a 2D hydraulic model to obtain main physical characteristics encountered by fish such as flow velocity, water depth, water temperature and substrate. The accuracy of the telemetry system was checked and a positional error less than 4 m was found in the channel (detection efficiency of 50 %) and less than 8 meters along the banks (detection efficiency of 20 %). Behavioral responses of fish were investigated through the individual mobility and activity during selected phases of flow (increase, decrease and stability) and water temperature changes (imposed by both warm water plumes and the rapid transition of deep cold waters from the Leman Lake discharged within the river). Mobility and activity of fish were particularly studied to determine the amount of movement associated with a change of abiotic conditions. The separate effects of each environmental factors on behavioral responses of fish were studied and interactions between factors were analyzed to highlight potential synergistic or antagonistic effects. Finally, movement rules (i.e. individual movement decisions in a particular surrounding environment) were analyzed to determine the role of perception of the environment by fish (i.e. how the fish feel the changes in physical habitat) in the use of space. [less ▲]

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See detailSpatial and temporal propagation of Cryptosporidium and Giardia at various scales in a drinking water reservoir
Burnet, Jean-Baptiste; Ogorzaly, Leslie; Penny, Christian et al

Conference (2011, September)

Cryptosporidium and Giardia are emergent protozoan parasites of faecal origin causing diarrhoeal diseases throughout the world. Their impact on public health is closely linked to the management of water ... [more ▼]

Cryptosporidium and Giardia are emergent protozoan parasites of faecal origin causing diarrhoeal diseases throughout the world. Their impact on public health is closely linked to the management of water resources and both pathogens are continuously released in the environment by punctual and diffuse faecal pollution sources. With the amendment of the Water Safety Plans published by the World Health Organization in 2005, the assessment of the public health risk associated with the presence of both parasites has extended to watershed scale. In Luxembourg, the Upper-Sûre reservoir provides 50% of the population of the country with drinking water. The presence of both Cryptosporidium and Giardia in surface water within the catchment area has been documented earlier. The aim of this study was therefore to understand the propagation of both protozoans within the catchment area over time and space. Integrated into a risk assessment-based approach, the results are intended for establishing an efficient monitoring strategy. Currently, no such strategy is available for water utilities. Though it is a crucial tool for improving the management of drinking water resources because it should alert responsible authorities in case of high contamination risk and prevent from possible waterborne outbreaks. [less ▲]

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See detailEvaluation of Eddy Losses Due to High Current Leads in Transformers Using a Subproblem Method
V.Ferreira da Luz, Mauricio; Dular, Patrick ULiege; Dang, Quoc Vuong ULiege et al

in ISEF 2011 - XV International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (ISEF2011 ) (2011, September)

A subproblem finite element method is developed for evaluating the eddy losses due to high current leads in transformers. The structural component of the transformer is modeled with classical volumetric ... [more ▼]

A subproblem finite element method is developed for evaluating the eddy losses due to high current leads in transformers. The structural component of the transformer is modeled with classical volumetric elements or more efficiently with a thin shell model (surface impedance technique). Tools are then developed to correct the inaccuracies near edges and corners inherent to thin shell models for magnetodynamic problems. Improvements of local fields make possible accurate calculations of eddy losses and of temperature rise. [less ▲]

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See detailSubproblem method with dual finite element formulations for accurate thin shell models
Dang, Quoc Vuong ULiege; Dular, Patrick ULiege; V Sabariego, Ruth ULiege et al

in Proceedings of the XV International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (ISEF2011) (2011, September)

A subproblem method with dual finite element magnetostatic and magnetodynamic formulations is developed to correct the inaccuracies near edges and corners coming from thin shell models, that replace thin ... [more ▼]

A subproblem method with dual finite element magnetostatic and magnetodynamic formulations is developed to correct the inaccuracies near edges and corners coming from thin shell models, that replace thin volume regions by surfaces. The surface-to-volume correction problem is defined as one of the multiple subproblems applied to a complete problem, considering successive additions of inductors and magnetic or conducting regions, some of these being thin regions. Each subproblem is independently solved on its own domain and mesh, which facilitates meshing and solving while controlling the importance and usefulness of each correction. Parameterized analyses of thin regions are efficiently performed. [less ▲]

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See detailDiversity and disparity of the Mesozoic plant fossil record
Cascales - Miñana, Borja ULiege; Sender, Luis Miguel; Villanueva-Amadoz, Uxue et al

Conference (2011, September)

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See detailEnzymatic Interesterificationof Palm oil and Fractions: A Calorimetric Study
Danthine, Sabine ULiege; De Clercq, Nathalie; Lefebure, Emilie ULiege et al

Poster (2011, September)

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See detailIon Mobility - Mass Spectrometry as a new approach for the screening of pesticide residues in food
Joly, Laure; Goscinny, Séverine ULiege; Touilloux, Romain et al

Conference (2011, September)

Detailed reference viewed: 47 (1 ULiège)
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See detailKinetics and diffusional limitations in nanostructured heterogeneous catalyst with controlled pore texture
Pirard, Sophie ULiege; Hermans, Sophie; Devillers, Michel et al

Poster (2011, September)

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See detailTetanus following castration in a buck
Lamain, Guillaume ULiege; Guyot, Hugues ULiege

Poster (2011, September)

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See detailSubproblem finite element method for magnetic model refinements
Dular, Patrick ULiege; Ferreira da Luz, Mauricio V.; Kuo-Peng, Patrick et al

in Proceedings of the XV International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering (ISEF2011) (2011, September)

Model refinements of magnetic circuits are performed via a subproblem finite element method. A complete problem is split into subproblems with overlapping meshes, to allow a progression from source to ... [more ▼]

Model refinements of magnetic circuits are performed via a subproblem finite element method. A complete problem is split into subproblems with overlapping meshes, to allow a progression from source to reaction fields, ideal to real flux tubes, 1-D to 2-D to 3-D models, perfect to real materials, with any coupling of these changes. Its solution is the sum of the subproblem solutions. The procedure simplifies both meshing and solving processes, and quantifies the gain given by each refinement on both local fields and global quantities. [less ▲]

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See detailSystematic expression profiling of Hox genes in the central nervous system of adult mouse
Theys, Nicolas; Doshishti-Agolli, Konstantin; Coste, Cécile ULiege et al

Poster (2011, September)

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See detailImpact of the mesh on the accuracy and efficiency of cardiovascular simulations
Sauvage, E.; Geuzaine, Christophe ULiege; Remacle, J.-F. et al

in Proceedings of the ECCOMAS Thematic International Conference on Simulation and Modeling of Biological Flows (SIMBIO 2011) (2011, September)

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See detailThe Hybrid Finite-Element Mixing-Cell method: a candidate for modelling groundwater flow and transport in karst systems
Brouyère, Serge ULiege; Wildemeersch, Samuel ULiege; Orban, Philippe ULiege et al

in Bertrand, C.; Carry, N.; Mudry, J. (Eds.) et al Proc. H2Karst, 9th Conference on Limestone Hydrogeology (2011, September)

Groundwater flow and contaminant transport modelling in karst systems remains a challenge because of the complexity of the geology made of caves, voids, conduits of various sizes and forms and interacting ... [more ▼]

Groundwater flow and contaminant transport modelling in karst systems remains a challenge because of the complexity of the geology made of caves, voids, conduits of various sizes and forms and interacting matrix. Such heterogeneous structures cause complex hydraulic conditions for groundwater flow and transport processes. Despite the progresses in field investigation techniques and experiments, detailed knowledge and characterization of the karst system geometry and connectivity remains inaccessible and pragmatic modelling approaches have to be used. Groundwater models of different complexities have been developed for karst systems, ranging from transfer functions and linear reservoir models to spatially distributed models. Here, a new flexible modelling approach, the Hybrid Finite-Element Mixing-Cell method (HFEMC), has been developed that allows combining in a single model, and in a fully interacting way, different mathematical approaches of various complexities for groundwater modelling in complex environments. This includes linear reservoirs, distributed reservoirs, groundwater flow in variably saturated equivalent porous media, with possibilities to consider by-pass flows along preferential flow paths, internal boundary conditions between the karstic features and the surrounding rock mass matrix background and drainage by surface waters. This method has been implemented in the groundwater flow and solute transport numerical code SUFT3D. The objective of this communication is to present the modelling concepts and to discuss the potentials and advantages of the HFEMC method for modelling groundwater flow in karst systems over existing more classical modelling approaches. The discussion is supported by illustrative “synthetic” examples representative of karst systems and a real modelling application to the case of groundwater rebound and water inrush in a closed underground coal mine which presents a very similar geometrical and hydrological context to a karst, with cavities, drains and interacting rock mass. [less ▲]

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See detailApport des ondes de choc dans le traitement kinésithérapeutique des fasciites plantaires chroniques
Lienard, Marie; Hasard, Anne; Crielaard, Jean-Michel ULiege et al

in 4ème Congrès commun SFMS & SFTS (2011, September)

INTRODUCTION : La littérature est encore assez contradictoire concernant les effets de la thérapie par ondes de choc radiales appliquées aux fasciites plantaires. L’objet de notre étude est d’évaluer ... [more ▼]

INTRODUCTION : La littérature est encore assez contradictoire concernant les effets de la thérapie par ondes de choc radiales appliquées aux fasciites plantaires. L’objet de notre étude est d’évaluer l’efficacité de la thérapie par ondes de choc ajoutée à un traitement de kinésithérapie classique dans la prise en charge des fasciites plantaires chroniques. MATERIEL ET METHODE : Au départ d’une population de 22 sujets, nous avons formé deux groupes de manière randomisée : le groupe E qui a bénéficié d’un traitement combiné d’ondes de choc radiales et de kinésithérapie et le groupe T qui a bénéficié d’une prise en charge kinésithérapeutique classique (standardisée pour les 2 groupes : US, MTP, étirements, renforcement du tibial antérieur, massage et cryothérapie). Les tests utilisés lors de l’évaluation comprenaient : l’échelle visuelle analogique, 2 questionnaires validés («Index de Fonctionnalité du Pied» et «Invalidité du Pied»). Les patients ont été évalués avant le traitement (pré-test), 2 semaines (tests intermédiaires) et 6 semaines (post-tests) après le début du traitement. RESULTATS : Nous observons de manière générale des améliorations dans les deux groupes. Le groupe E enregistre cependant une amélioration plus rapide des paramètres étudiés que le groupe T. Au niveau de la douleur et de l’invalidité, c’est le traitement par les ondes de choc qui induit l’évolution la plus positive. Pour la fonctionnalité, le traitement de kinésithérapie conventionnelle montre l’amélioration la plus grande. La comparaison des évolutions entre les 2 groupes entre-eux ne démontre aucune différence statistiquement significative, mais l’observation des valeurs chiffrées tend à montrer une amélioration plus rapide durable pour le groupe E. CONCLUSION : La combinaison thérapie du traitement kinésithérapeutique des fasciites plantaires chroniques au traitement par ondes de choc semble diminuer la douleur et l’invalidité ainsi qu’améliorer la fonctionnalité du pied plus rapidement. Le traitement de kinésithérapie seul, quant à lui, permettrait, de manière plus lente, d’améliorer également les paramètres douloureux et de la fonctionnalité, mais ce n’est qu’après la prise en charge kinésithérapeutique que les patients ressentent une amélioration de leur invalidité. Cependant, lorsque l’on compare les 2 groupes entre eux 6 semaines après l’initiation du traitement, nous n’observons pas de différence significative pour les 3 critères étudiés. [less ▲]

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See detailOptimization of Hull Structures for a 60 meters Mega Yacht
Motta, Dario; Caprace, Jean-David ULiege; Rigo, Philippe ULiege et al

in Proceeding of the 11th International Conference on Fast Sea Transportation (2011, September)

As well known already in earliest phases of a ship project many aspects and choices depend on the structural design which has been defined only at a preliminary level. This trend appears to be similar for ... [more ▼]

As well known already in earliest phases of a ship project many aspects and choices depend on the structural design which has been defined only at a preliminary level. This trend appears to be similar for merchant ships, passenger ships and motor yachts. Only in the final part of the project some shipyards begin to apply optimization processes, more or less sophisticated, in order to refine the structural design in view of reducing the weight and/or the construction cost. The weight in particular has a very important impact on pleasure vessels, both motor and sailing. Structural modifications suggested by such optimization procedures imply a number of second order changes in related items such as plant, outfitting and others. As a consequence the structural optimization could be particularly useful if it can be applied during the first stages of the project, this way avoiding very expensive time losses and changes caused by any structural modifications. In this paper the structural optimization of a 60 meters megayacht is presented, performed by LBR-5 code developed by the University of Liege. This code is an optimization tool specifically designed for structures composed by stiffened plates and stiffened cylindrical shells. The optimal solution is reached through an optimization algorithm based on convex linearization and a dual approach. The LBR-5 software has been successfully utilized to optimize hull structures of a 60 meters megayacht. Differently from large ships, the mega yacht has not a “cylindrical body” in the central part of the hull. So, a new module of the software has been used in order to analyze several sections of the ship and to perform an overall optimization. For this application the optimization analysis has been carried out by different approaches: assuming the weight as the objective function a gain of about 8% has been achieved, while a least cost optimization allowed a reduction of 15%. [less ▲]

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See detailPredictors of generic and specific quality of life among paediatric cancer patients
Fonseca, Marta; Missotten, Pierre ULiege; Etienne, Anne-Marie ULiege et al

in Psychology & Health (2011, September), 26(Sup2), 125

The present study aims to identify clinical predictors of paediatric cancer patients’ quality of life (QOL). Children with cancer, aged from 8 to 12 years old (n=40), completed the Quality of Life ... [more ▼]

The present study aims to identify clinical predictors of paediatric cancer patients’ quality of life (QOL). Children with cancer, aged from 8 to 12 years old (n=40), completed the Quality of Life Systemic Inventory – Module for Cancer - QLSI-C© (Etienne, Dupuis, Spitz, Lemétayer, & Missotten 2011; Fonseca, & Spitz, 2011; Missotten, Fonseca, Dupuis, Lemétayer, Spitz, & Etienne) and a socio-demographic questionnaire. Results show that diagnosis’ type, time after diagnosis and the fact of relapse or not accounts for 21,7% of generic QOL variance and 30,9% of specific QOL variance. Findings support that paediatric cancer patients with a diagnosis of solid tumour, a more recent diagnosis, and those who relapse are in a more vulnerable situation regarding their QOL and therefore need more attention by doctors and caregivers. [less ▲]

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See detailIntroduction to the session "Public action and/or steering"
Schoenaers, Frédéric ULiege

Conference (2011, September)

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See detailDevelopment of a scoring system to assess lameness status in dairy cattle farms
Frisee, Vincent ULiege; Guyot, Hugues ULiege

in Société Belge Francophone de Buiatrie & Vlaamse vereniging voor Buiatrie (Ed.) Proceeding of the 6th European Congress of Bovine Health Management (2011, September)

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See detailDiscrete Event Production Simulation in Shipyard Workshops
Caprace, Jean-David ULiege; Moreira Freire, Roberto; Assiss, Luiz Felipe et al

in Proceeding of the 21th COPINAVAL (2011, September)

Nowadays, shipyards are making huge effort to efficiently manage equipments and resources such as laborers, gantry cranes, transporters, steel and block stock yards, etc. Previously scheduling was ... [more ▼]

Nowadays, shipyards are making huge effort to efficiently manage equipments and resources such as laborers, gantry cranes, transporters, steel and block stock yards, etc. Previously scheduling was manually performed by an experienced manager of a shipyard. But such a scenario leads to undesirably long times for producing scheduling results. In addition, the quality of the scheduling results was usually not optimal. To improve the overall process, Discrete Event Simulations (DES) have been developed and recently use in shipbuilding industry. The use of simulation-based design and virtual reality technologies leads to higher efficiency in terms of work strategy planning, and offers, as a result, significant productivity gains. It gives computer-supported answers to the major questions: when and where to produce what and with which resources depending on the availability and restrictions of resources and materials. The first part of the paper presents a multi-criteria analysis to select the most appropriate DES software for shipyards. Then, the second part of the paper shows production simulation model focusing on block erection stage. Two different blocks splitting are compared and then the results are discussed. [less ▲]

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See detailSedimentology of a continuous Givetian-Frasnian carbonate succession in Sauerland (Germany) and MS comparison with the time-equivalent ones of Ardennes (Belgium) and Moravia (Czech Republic)
Pas, Damien ULiege; Da Silva, Anne-Christine ULiege; Boulvain, Frédéric ULiege et al

Poster (2011, September)

This study focuses on the continuous Givetian-Frasnian section of the abandoned Burgberg's quarry (Messinghausen Anticline, northern margin of the Rhenish Mountains). The exposed section (102 m thick ... [more ▼]

This study focuses on the continuous Givetian-Frasnian section of the abandoned Burgberg's quarry (Messinghausen Anticline, northern margin of the Rhenish Mountains). The exposed section (102 m thick) covers a well constraint stratigraphic interval starting at the base of the Givetian (Stritzke 1991;Aboussalam et al., 2003) and according to our new datations ending within the Lower Famennian. The Middle-Upper Devonian shelf-edge within the Rheinisches Schiefergebirge can be traced from the supposed position along the southern rim of the Dinant Syncline and the Eifel Synclines, northwards along a line connecting the southern margin of the Devonian reefal outcrops of Attendorn and Brilon (Krebs 1967, 1974). The depositional setting of the investigated section corresponds to complex slope and basinal environments where reworked material from the proximal Brilon platform (located to the north) and basin deposits coexist. Thus, this section allows to follow the evolution of the Givetian-Frasnian Brilon (e.g., Machel 1990; Stritze 1990, 1991) platform in a deeper setting. Petrographic analysis of more than 300 thin-sections leads to the identification of 9 microfacies which are integrated into a palaeoenvironmental model. Microfacies curve evolution shows two main trends. A shallowing upward trend ending within a typical proximal slope setting (dismantling of the platform) followed by a deepening upward trend which is characterized by several meter of pelagic mudstone within the upper part of the studied section. Magnetic susceptibility variations in sedimentary rocks, have commonly been interpreted as related to variations of detritic inputs through climatic or sea level changes (Crick et al., 1994). The magnetic susceptibility (MS) study of more than 330 samples from this long-time fore-reef carbonated succession is an opportunity to better constrain our sedimentological interpretations. To do so, we propose a comparison between general MS trends and some parameters such as microfacies and relative sea level fluctuations interpreted on the basis of the sedimentological study. The relatively long stratigraphic interval covered by the Burgberg section offers a good opportunity to compare our data with the time equivalent Devonian sections of the Ardennes (Belgium) and Moravian karst area (Czech Republic) (Boulvain et al., 2010). And thus to test the magnetic susceptibility tool for long distance correlation between stratigraphically well constraint sections. [less ▲]

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See detailL'analyse réflexive: un outil pour construire son métier de professeur de sciences au secondaire supérieur
Hindryckx, Marie-Noëlle ULiege; Poffé, Corentin ULiege; Laschet, Mélanie ULiege

Conference (2011, September)

L’analyse réflexive : un outil pour construire son métier de professeur de sciences au secondaire supérieur A l’Université de Liège, la formation en didactique spéciale de la biologie s’adresse à un ... [more ▼]

L’analyse réflexive : un outil pour construire son métier de professeur de sciences au secondaire supérieur A l’Université de Liège, la formation en didactique spéciale de la biologie s’adresse à un public diversifié, tant au niveau de la formation initiale (master ou licence en biologie, sciences biomédicales, médecine vétérinaire, sciences de la santé…) qu’au niveau de l’âge ou des motivations à l’entrée dans le métier. Tous ces étudiants veulent pourtant devenir des enseignants du secondaire supérieur en sciences. Outre les aspects techniques du métier en lien avec la gestion d’une classe, la prise en compte des prescrits légaux, la maîtrise même des contenus, nous tenons à mettre l’accent sur la réflexivité dans la formation initiale des enseignants. La présente communication montrera quelques exemples d’activités menées pour développer cette réflexivité dans différents aspects du métier : • Construire son identité de professeur de sciences (passer de l’autre côté de la barrière) ; • Entrer de façon concrète dans le métier en enseignant à ses pairs (micro-enseignements) ; • Assumer les stages : la réflexion avant, dans et sur l’action ; • Conceptualiser son action professionnelle par l’apport de l’expérience vécue et de la construction dans l’action (séminaires d’analyse des pratiques) ; • Conceptualiser son action professionnelle pour favoriser l’intégration des outils scientifiques à son service (activités de mise à distance) ; • Prendre de la distance et dépasser le caractère local de l’action. Ce dernier aspect sera plus particulièrement illustré par une expérience menée cette année scolaire 2010-2011 de travail en duos entre futurs enseignants du fondamental et du secondaire supérieur autour de la démarche scientifique. [less ▲]

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See detailProcessing of carbon fibers reinforced Mg matrix composites via pre-infiltration with Al
Mertens, Anne ULiege; Lecomte-Beckers, Jacqueline ULiege; Montrieux, Henri-Michel ULiege et al

Conference (2011, September)

Mg matrix composites appear as suitable competitors to Al alloys for a wide number of applications, as they allow for a significant weight reduction while exhibiting potentially comparable mechanical ... [more ▼]

Mg matrix composites appear as suitable competitors to Al alloys for a wide number of applications, as they allow for a significant weight reduction while exhibiting potentially comparable mechanical properties. And a large variety of processing routes have already been considered for their production, including 'liquid state' processes such as squeeze casting. These techniques necessitate a very careful control of the wetting behaviour and of the possible interfacial reactions between the reinforcements and the molten metal, along with the solidification process. And this is more particularly true in the case of Mg matrix composites with carbon fibers reinforcements, as Mg alloys are known to exhibit a poor wetting behaviour on carbon substrates. [less ▲]

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See detailThe Draft Regulations on Matrimonial Property : a Critical Appraisal
Wautelet, Patrick ULiege

Conference (2011, September)

This short presentation gives an overview of the twin Draft Regulations proposed by the EU Commission in March 2011 to create a European wide private international law framework for matrimonial assets.

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See detailÉtude de la qualité de vie entre enfants atteints de cancer et enfants tout-venant
Fonseca, Marta; Missotten, Pierre ULiege; Etienne, Anne-Marie ULiege et al

Conference (2011, September)

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See detailEnhancement of in-situ Transformation of M2C Eutectics Carbides during High Temperature Heat Treatment on a HSS and a Semi-HSS Grades
Tchuindjang, Jérôme Tchoufack ULiege; Sinnaeve, Mario; Lecomte-Beckers, Jacqueline ULiege

Poster (2011, September)

Alloys of the complex system Fe-Si-C-Cr-C-X, where X is a strong carbide forming-element are well known to exhibit interesting mechanical properties, including wear and abrasion resistances. Such a ... [more ▼]

Alloys of the complex system Fe-Si-C-Cr-C-X, where X is a strong carbide forming-element are well known to exhibit interesting mechanical properties, including wear and abrasion resistances. Such a tribological behavior is mainly due to the presence of carbides especially those obtained during the solidification route and that are known as primary or eutectic carbides. It may therefore be interesting to determine the relative stability of primary carbides when considering thermal and thermomechanical treatments performed at a temperature high enough to allow either the homogenization of the matrix or the occurrence of a desired grain size. This thermal stage is often required to produce tailored microstructures that can lead to improved mechanical properties. In this work a series of thermal treatments performed on samples originated form casting foundry parts were done. Raw materials are both HSS and semi-HSS grades used in application where wear resistance is needed. Thermo- Calc® (TC) simulations and Differential Thermal Analysis (DTA) were performed to determine the crystallization behavior and the subsequent solid state transformations of the studied alloys respectively in equilibrium and in non equilibrium conditions. Light and Scanning Electron Microscopies were done together with hardness measurements in order to enhance metallurgical features of the heat treated samples. Image analysis yielded the determination of carbides volume fractions. It appears from microstructural analyses and carbides quantification that Mo-rich eutectic carbides undergo in situ phase transformations during heat treatments. In fact Mo-rich M2C carbides transform themselves into MC, M6C and M3C, through a so-called budding phenomenon. Such a phenomenon is the evidence of a preferential migration of some atoms that escape from the parent M2C carbide to diffuse further away from their initial site with increasing time and temperature. The stable or metastable nature of eutectic carbides is also discussed from DTA and TC results, as M2C carbides found in both as-conditions and DTA samples were not predicted by equilibrium conditions. [less ▲]

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See detail“Due strumenti per la valutazione dell’attaccamento romantico a confronto: Ecr ed Ecr-r”
Calvo, Vincenzo; Messina, Roberta ULiege; Mania, Adriana et al

in XIII Congresso Nazionale della Sezione di Psicologia Clinica Dinamica, Catania, 16-18 settembre (2011, September)

L’obiettivo della ricerca era di mettere a confronto due strumenti ampiamente usati per la valutazione dell’attaccamento romantico, somministrandoli entrambi ad uno stesso gruppo di soggetti adulti. Il ... [more ▼]

L’obiettivo della ricerca era di mettere a confronto due strumenti ampiamente usati per la valutazione dell’attaccamento romantico, somministrandoli entrambi ad uno stesso gruppo di soggetti adulti. Il primo era il questionario Experiences in Close Relationships (ECR, Brennan, Clark & Shaker, 1998), uno degli strumenti più utilizzati e validati, anche in ambito italiano (Picardi et al., 2000, 2002; Agostoni & Manzoni, 2007). Il secondo strumento era la versione rivista dell’ECR, denominata Experiences in Close Relationships-Revised (ECR-R), sviluppata da Fraley, Waller e Brennan (2000) e che, secondo gli autori, ha permesso di migliorare la precisione di misurazione dello strumento di partenza. Alla ricerca hanno preso parte 180 soggetti adulti (età media 22,43 anni, ds = 2,56), ripartiti in tre sottogruppi, relativi allo status relazionale (single, fidanzati da meno di due anni e fidanzati da più di due anni) di uguale numerosità; metà erano femmine e metà maschi. La procedura ha comportato la somministrazione a tutti i soggetti della versione italiana dell’ECR (Picardi et al., 2000) e dell’ECR-R (nella nostra versione: Calvo, 2008) controbilanciando l’ordine di presentazione degli strumenti all’interno dei sottogruppi. In sintesi, i risultati hanno evidenziato come entrambi gli strumenti abbiano un’elevata consistenza interna, del tutto simile fra loro (Alfa di Cronbach: ECR evitamento = 0,93; ECR ansietà = 0,88; ECR-R evitamento = 0,92; ECR-R ansietà = 0,88) e un’alta correlazione fra le scale corrispondenti (Evitamento ECR e ECR-R, r = .92, Ansietà ECR e ECR-R, , r = .82). L’ECR presenta una maggiore indipendenza fra le due scale di evitamento e ansità (r = .18) rispetto all’ECR-R (r = .40). Per quanto concerne la distribuzione dei punteggi, non vi sono differenze significative fra i due strumenti nella media dell’evitamento (t[179]=-1.65, ns) mentre vi è una differenza significativa rispetto all’ansietà (t[179]=10.1, p = .001). In altre parole, uno stesso soggetto tenderà ad avere punteggi di ansietà più elevati se valuto con l’ECR rispetto all’ECR-R (da qui l’evidenza che non è possibile utilizzare in modo intercambiabile le distribuzioni normative dei due strumenti). [less ▲]

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See detailEffect of Deferoxamine Mesylate on Freezability of Blood Supplemented Canine Semen
Van Den Berghe, Femke ULiege; Rijsselaere, Tom; Van Soom, Ann et al

Poster (2011, September)

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See detailModelling European tree species distribution change over the Holocene
Dury, Marie ULiege; François, Louis ULiege; Warnant, Pierre et al

Conference (2011, September)

The postglacial re-colonization of Europe by temperate tree species from a few glacial refugia during the Holocene (10,000 BP) is a very interesting case to study the mechanisms of the vegetation dynamics ... [more ▼]

The postglacial re-colonization of Europe by temperate tree species from a few glacial refugia during the Holocene (10,000 BP) is a very interesting case to study the mechanisms of the vegetation dynamics. The relative roles that played the climate conditions, the species dispersal capacities and the inter-specific competition in the re-colonization rates remain controversial. We investigate these different aspects with the CARAIB dynamic vegetation model (CARAIB DVM). Transient runs were performed over the Holocene using the HadCM3 AOGCM-reconstructed climate. European-wide species migration at 0.5° x 0.5° is represented in the model using migration rates derived from a high resolution cellular automaton, CATS-UPSCALE. Individual tree species migration rates were pre-calculated with CATS-UPSCALE every 1000 years over each grid cell used by the DVM in the climatic conditions reconstructed by the AOGCM. The impacts of competition between species on plant dispersal are not taken into account by the automaton. Thus, in CARAIB, a function has been constructed to reduce the potential CATS migration rates in competition conditions. It is based on the species dispersal kernel and on the species net primary productivity. The migration of one species, from its 10,000 BP refugia, is studied within a landscape defined by a set of other species for which no dispersal limitations are assumed. Here, we illustrate the results obtained for two wind-dispersed (Abies alba and Picea abies) and for a no wind-dispersed (Fagus sylvatica) tree species. We compare the HadCM3 climate outputs with reconstructions of some climate variables from fossil dataset. The speeds and the paths of the postglacial spread obtained with the DVM are compared to the past distributions of the three species reconstructed from pollen and macrofossil data. The Holocene climate conditions simulated by the HadCM3 AOGCM do not constrain the European re-colonization of the studied species, except in Scandinavia at the beginning of the period for Picea abies. We observe that, during the past 10,000 years, species occupied regions where climate conditions were different from present observed species climate requirements, notably in the 10k species refugia. This result may imply that at present the species do not occupy their potential distribution area and thus that the postglacial re-colonization is not completed yet. We also show that species dispersal capacities cannot explain the observed species migration over the Holocene and that competition has played an important role. Indeed, when we use the potential migration rates (no competition), species migration rates are too fast. [less ▲]

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See detailSIRT1-deficient mice exhibit an altered cartilage phenotype and undergo increased cartilage breakdown and apoptosis
Gabay, Odile; Sanchez, Christelle ULiege; Dvir-Ginzberg, Mona et al

Conference (2011, September)

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See detailMULTICENTER BELGIAN SURVEY ON DONOR MORBIDITY AND MORTALITY IN ADULT-TO-ADULT LIVING DONOR LIVER TRANSPLANTATION
Troisi, Roberto I; Vogelaers, Dirk; Lerut, Jan et al

in Transplant International (2011, September), 24(2), 13-13

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See detailLIVER TRANSPLANTATION FROM DONATION AFTER CARDIOCIRCULATORY DEATH (DCD) DONORS: BELGIAN EXPERIENCE 2003-2009
DE ROOVER, Arnaud ULiege; Le Dinh, Hieu ULiege; Cicarelli, Olga et al

in Transplant International (2011, September), 24(2), 84-84

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See detailTail amputation in a Belgian blue bull
Lamain, Guillaume ULiege; Sartelet, Arnaud ULiege; Touati, Kamal ULiege

Poster (2011, September)

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See detailLe mythe des forêts intactes - Etat des lieux
Bourland, Nils ULiege; Federspiel, Michèle; Philippart, Julien ULiege et al

Conference (2011, September)

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See detailBELGIAN EXPERIENCE OF DCD KIDNEY TRANSPLANTATION
Darius, Tom; Jochmans, Ina; Ledinh, Hieu et al

in Transplant International (2011, September), 24(2), 43-44

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See detailPerinatal depression in adolescent mothers : a public health concern
Noirhomme-Renard, Florence ULiege; Tancredi, Annalisa; Gosset, Christiane ULiege

Poster (2011, September)

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See detailInfiltration de concentré plaquettaire dans le traitement des tendinopathies rotuliennes : résultats préliminaires
Kaux, Jean-François ULiege; Croisier, Jean-Louis ULiege; SIMONI, Paolo ULiege et al

in 4ème Congrès commun SFMS & SFTS (2011, September)

Introduction : L’évolution de certaines tendinopathies, et plus particulièrement, les tendinopathies rotuliennes aussi appelées Jumper’s knee demeurent relativement rebelles aux traitements ... [more ▼]

Introduction : L’évolution de certaines tendinopathies, et plus particulièrement, les tendinopathies rotuliennes aussi appelées Jumper’s knee demeurent relativement rebelles aux traitements «conservateurs». Divers travaux expérimentaux ont souligné les propriétés réparatrices des plaquettes et de divers facteurs de croissances libérés localement. Ceux-ci peuvent effectivement accélérer la cicatrisation de certains tissus : os, muscles et tendons. Ces recherches ont permis de comprendre l’action plaquettaire en qualité de médiateur et/ou activateur de la cicatrisation tissulaire. Depuis janvier 2010, ce traitement des lésions tendineuses n’est plus repris sur la liste des méthodes dopantes. Matériel et méthodes : Le but de l’étude est de réaliser une injection locale de concentré plaquettaire (PRP) chez des patients présentant une tendinopathie rotulienne supérieure rebelle, évoluant depuis plus de 3 mois, n’ayant plus bénéficié de traitement physique (programme excentrique, ondes de choc) depuis 4 semaines. Les patients bénéficient d’un bilan d’imagerie (échographie et IRM), un bilan fonctionnel ainsi qu’un test clinique algique palpatoire à l’aide d’un algomètre avant le traitement et à 6 semaines. Ils sont également invités à répondre à un questionnaire relatif à l’importance de la douleur et de la situation médico-sportive et fonctionnelle. Le PRP est prélevé à partir de sang autologue par l’intermédiaire d’un système d’aphérèse. L’injection de PRP (± 6 mL) est réalisée, sans anesthésie locale, de manière stérile au niveau de l’insertion proximale du tendon rotulien. Un repos relatif 48 heures après l’infiltration est préconisé. Une rééducation excentrique complémentaire est initiée 1 semaine après l’injection. Un repos sportif spécifique de 6 semaines est maintenu. En cas de douleur, le patient ne peut pas prendre d’anti-inflammatoire mais bien un antidouleur de classe I ou II. Notre protocole a été examiné et approuvé par le Comité d’Ethique Hospitalo-Facultaire Universitaire de Liège. Résultats et discussion : Dix patients présentant une tendinopathie rotulienne supérieure chronique sont actuellement inclus dans l’étude. Les tests et évaluation pré-injection révèlent une douleur persistante à la pointe de la rotule associée généralement à une perte de fonction. L’imagerie permet de confirmer le diagnostic. A 6 semaines de l’injection de PRP, l’évolution clinique est globalement favorable, avec une diminution significative des scores algo-fonctionnels (questionnaires et EVA lors des tests fonctionnels), mais sans amélioration significative des performances physiques. Il n’y a pas non plus de différence significative quant aux explorations d’imagerie médicale 6 semaines après l’injection de PRP. Conclusion: Une injection de PRP in situ semble améliorer cliniquement les patients atteints d’une tendinopathie rotulienne supérieure, à 6 semaines post-infiltration. Cependant, celle-ci ne semble pas avoir de répercussion sur les performances fonctionnelles ni sur l’imagerie médicale après 6 semaines. Un suivi sur une période plus importante est nécessaire pour en apprécier les effets à long terme. [less ▲]

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See detailMicrobiological and chemical characterisation of St Anne cave, Belgium
Carnol, Monique ULiege; Malchair, Sandrine ULiege

Poster (2011, September)

In Belgium, most drinking water is provided by calcareous karst aquifers. Chemical and microbiological characterisation of these systems focalises mainly on the transfer of pollutants and microbial ... [more ▼]

In Belgium, most drinking water is provided by calcareous karst aquifers. Chemical and microbiological characterisation of these systems focalises mainly on the transfer of pollutants and microbial contaminants, major sources of sanitary risks. These studies are generally based on bacterial cultures, representing however only 1% of bacterial species present in the environment. Molecular techniques allow the study of the global microbial diversity of an environment, as they are based on direct ADN extractions, without previous culturing steps. The objective of this research was the study of the microbial diversity in the ‘St Anne’ cave, Belgium. Chemical composition of the water, cultivable bacteria and the diversity of ammonia-oxydizing bacteria (AOB) were studied in waters and sediments of the ‘Chawresse’ (underground river in St Anne), on the cave’s wall and in soils aboveground. Bacterial counts revealed that most cultivable bacteria were associated with suspended particles and that their numbers decreased underground. Molecular analyses revealed the presence of AOB in the karst system. AOB are responsible for the first, acidifying step of the nitrification process. Further studies will specify and quantify their activity in this karst system. [less ▲]

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See detailChildren of teenage mothers : delayed psychomotor and language development
Noirhomme-Renard, Florence ULiege; Tancredi, Annalisa; Gosset, Christiane ULiege

Conference (2011, September)

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See detailAssessing the impacts of technical uncertainty on coupled surface/subsurface flow model predictions using a complex synthetic case
Wildemeersch, Samuel ULiege; Goderniaux, Pascal ULiege; Orban, Philippe ULiege et al

Poster (2011, September)

According to the EU Water Framework Directive, Member States have to manage surface water and groundwater at the water body scale and in an integrated way. Flow and transport models constitute useful ... [more ▼]

According to the EU Water Framework Directive, Member States have to manage surface water and groundwater at the water body scale and in an integrated way. Flow and transport models constitute useful management tools in this context since they can predict system responses to future stresses. However, numerical modelling at such a scale faces specific issues linked to (1) the representation of the geological and hydrogeological complexity, (2) the uneven level of characterisation knowledge, (3) the representativity of measured parameters and variables in the field, and (4) the CPU time needed for solving the numerical problem. Assumptions and simplifications made for dealing with these issues can lead to a series of models differing by their complexity and by the reliability of their predictions. Consequently, modellers have to find a compromise between complexity and reliability. The main objective of this research is to estimate the impacts of technical uncertainty, which is the uncertainty related to the numerical implementation, on groundwater flow model predictions. To reach that objective, the methodology consists in comparing reference predictions (hydraulic heads and flow rates) of a complex and close to reality synthetic case with the predictions provided by a series of simplified models (coarse spatial discretisation, coarse time discretisation, simplified law in the unsaturated zone). The synthetic case reflects the main characteristics found in groundwater bodies of South Belgium (Condroz region of Wallonia), characterised by a succession of limestone synclines and sandstone anticlines. The numerical model is developed with the fully-integrated surface/subsurface flow and transport code HydroGeoSphere using a mesh refined along the surface water network (153027 nodes and 269872 elements). A 5-year reference transient simulation, with daily stress factors is performed. The simulated hydraulic heads and flow rates constitute the reference observations and predictions for the comparison with the simplified models. The simplified models tested differ by their horizontal (500 m vs. 1000 m element size) and vertical (8 layers vs. 3 layers) spatial discretisations, their time discretisation (daily vs. monthly stress factors), and the type of constitutive law used for simulating the unsaturated flow (linear vs. van Genuchten). The models are run with the same parameter values than those used in the reference model to evaluate the deterioration in model predictions due to technical uncertainty. Additionally, some of the models are calibrated with the inverse modelling code PEST to distinguish how far a model calibration can possibly compensate for technical uncertainty. Then, predictions from each simplified model are compared with the reference predictions of the synthetic case. Then, the simplified models are ranked using several model performance criteria. Results of this research provide guidelines for the numerical implementation of groundwater flow models at the water body scale with respect to specific groundwater management objectives. [less ▲]

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See detailAccompagnement d'enseignants du fondamental par un groupe d'enseignants en recherche autour de questions de didactique des sciences - ASBL Hypothèse
Daro, Sabine; Hindryckx, Marie-Noëlle ULiege

Conference (2011, September)

La formation des enseignants du fondamental en sciences doit être prise en charge par des équipes pluridisciplinaire afin de favoriser l'appropriation des sciences et de leur didactique par les ... [more ▼]

La formation des enseignants du fondamental en sciences doit être prise en charge par des équipes pluridisciplinaire afin de favoriser l'appropriation des sciences et de leur didactique par les enseignants eux-mêmes. L'ASBL Hypothèse regroupe des enseignants -chercheurs de tous les réseaux et de tous les niveaux qui mettent au point des outils pour les enseignants, dans leurs classes. [less ▲]

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See detailAccuracy of inflammation field tests in cattle practice
Guyot, Hugues ULiege; Lamain, Guillaume ULiege; Detilleux, Johann ULiege et al

in Société Belge Francophone de Buiatrie & Vlaamse vereniging voor Buiatrie (Ed.) Proceedings of the 6th European Congress of Bovine Health Management (2011, September)

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See detailLa troponine T ultrasensible : un nouvel outil diagnostic pour le médecin sportif?
LE GOFF, Caroline ULiege; Kaux, Jean-François ULiege; GARWEG, Christophe ULiege et al

in 4ème Congrès commun SFMS & SFTS (2011, September)

Introduction : Le risque d’accidents cardiaques ou de mort subite après effort physique intense est bien connu. Ces évènements indésirables se produisent souvent chez des sujets présentant une maladie ... [more ▼]

Introduction : Le risque d’accidents cardiaques ou de mort subite après effort physique intense est bien connu. Ces évènements indésirables se produisent souvent chez des sujets présentant une maladie coronarienne asymptomatique et ignorée. Néanmoins, vu ce risque, l’American Heart Association recommande de réaliser un screening cardiovasculaire chez les athlètes de tout âge. Dans cette optique, le dosage de marqueurs cardiaques de nouvelle génération, plus sensibles, comme la troponine T ultrasensible (hsTnT) peut certainement apporter des informations très intéressantes par la détection de dommages myocardiques mêmes mineurs. Matériels et méthodes : Des 20 sujets masculins volontaires âgés de 22.36±2.02 années, sédentaires, 8 ont dû être exclus (abandon, malaise à l’effort...). La VO2max a été préalablement déterminée lors d’un test à l’effort sur cycloergomètre une semaine avant le test afin de ne pas interférer avec les résultats de l’effort physique intense (EPI) pour lequel les sujets ont couru sur tapis roulant durant 1 heure à 75% de la VO2max. Quatre échantillons sanguins de 5 ml (tube hépariné-lithium) ont été prélevés : juste avant (T1), directement après (T2), 4 heures après (T3) et 24 heures après l’EPI (T4). Le dosage de hsTnT (Modular de Roche Diagnostic®) est réalisé sur du plasma par une technique d’électrocheminiluminescence. Résultats : Une augmentation statistiquement significative des résultats à T3 (p<0.01) est observée. L’élévation de la hsTnT est progressive pour atteindre un pic maximum à T3 et revenir dans les normes à T4. Le seuil critique de 0.03 ng/mL a été retenu et 75% des sujets présentent un taux supérieur à ce dernier à T3 (moyenne : 0.053 ng/mL), alors que 100% des sujets se trouvent en dessous de ce seuil à T1 (0.0041 ng/mL). Discussion - Conclusions : Ces résultats, extrêmement intéressants, suggèrent que la libération de hsTnT serait due soit à un processus physiologique de remodelage, soit à un processus irréversible de lésions au niveau des cardiomyocytes (nécrose). Il est également possible que cette élévation des troponines soit due à une libération à partir du pool cytosolique mais aussi elle peut être la conséquence de dommages membranaires potentiellement induits par le stress oxydatif. A l’issue de cette étude, nous démontrons que la hsTnT peut être un nouvel outil diagnostic dans le domaine de la cardiologie du sport. [less ▲]

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See detailSuccessful reduction of cholelithiasis in a Holstein cow
Lamain, Guillaume ULiege; Frisee, Vincent ULiege; Ramery, Eve ULiege et al

Poster (2011, September)

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See detailMolecular histology for epithelial ovarian cancers biomarker hunting: new issues for biology and pharmacology.
Longuespée, Rémi ULiege; Boyon, Charlotte; Kerdraon, Olivier et al

Poster (2011, September)

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See detailImpact d'un exercice intense sur les marqueurs cardiaques et de stess oxydant lors de la course à pieds
LE GOFF, Caroline ULiege; Kaux, Jean-François ULiege; MELON, Pierre ULiege et al

in 4ème Congrès commun SFMS & SFTS (2011, September)

Introduction : Le risque d’évènements cardiaques ou de mort subite après effort physique intense a été décrit dans diverses études. Chez les personnes ne pratiquant pas régulièrement une activité physique ... [more ▼]

Introduction : Le risque d’évènements cardiaques ou de mort subite après effort physique intense a été décrit dans diverses études. Chez les personnes ne pratiquant pas régulièrement une activité physique, l’incidence de décès liée à un exercice physique est plus importante que chez les jeunes sportifs. Ces évènements indésirables se produisent chez des sujets présentant une maladie coronarienne qui leur était inconnue. L’American Heart Association recommande de réaliser un screening cardiovasculaire pour les athlètes de tout âge. Le but de notre étude était de doser des marqueurs cardiaques très sensibles chez des sujets sédentaires soumis à une course à pieds. Méthodes : Nous avons enrôlés 15 sujets sédentaires (<2heures de sport/ semaine) masculins (22.5±2.15ans) dans notre étude. Du sang EDTA et hépariné a été prélevé juste avant la course (T1), juste après (T2), 3 heures après (T3) et 24 heures après la fin de la course (T4). L’exercice consistait en une course d’une heure sur un tapis roulant à 75% de la VO2max. Un test à l’effort a été préalablement réalisé chez chaque participant deux semaines avant le test d’endurance. Des dosages de marqueurs cardiaques tels que la troponine untrasensible (hsTnT), le peptide natriurétique de type B (NT-proBNP), la myéloperoxydase (MPO) et des marqueurs du stress oxydant tels que le glutathion réduit (GSH), le glutathion oxydé (GOX) et les peroxydes lipidiques ont été dosés. Résultats : Après la course, le NT-proBNP, hsTnT, POXL et MPO augmentent durant les 3 heures qui suivent. Le NT-proBNP a augmenté de façon significative de T2 à T4 comparé au T1. Soixante-dix pourcent des sujets dépassent les valeurs de référence pour la hsTnT au T3 et ce, de façon statistiquement significative comparé aux autres temps. La MPO augment légèrement au T2 mais non significativement. Les peroxydes lipidiques montrent une augmentation au T4 mais non significative. Le GOX augmente de façon significative au T2. Il n’y pas de variation du GSH alors que le rapport GSH/GOX est significativement augmenté au T4. Conclusions : Cette étude a permis de mettre en évidence que ce type d’exercice chez des sujets sédentaires produit un stress oxydant quantifiable et continu durant les 24 heures qui suivent l’effort. Nous n’observons pas d’adaptations antixydantes. L’augmentation des marqueurs cardiaques reflètent l’existence d’un stress cardiaque liée à cet exercice. [less ▲]

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See detailUse of Fixed and Mobile Acoustic Telemetry Systems to Understand Fish Responses to Habitat Variability in a Large River (Rhône, France)
Capra, Hervé; Pella, Hervé; Ovidio, Michaël ULiege et al

Conference (2011, September)

The presentation would summarize the advantages and limitations of both fixed and mobile acoustic telemetry equipment deployed in a fast flowing large river : the Rhône river (France). The objectives were ... [more ▼]

The presentation would summarize the advantages and limitations of both fixed and mobile acoustic telemetry equipment deployed in a fast flowing large river : the Rhône river (France). The objectives were to describe fish behavior in term of fish movements as responses to habitat variability due to the production of peaking electricity and temperature heterogeneity (natural or due to a nuclear power plant release). At a local scale we used a fixed automatic acoustic telemetry system to record continuous movements of n=62 fish during short term (lower than day) habitat variability. The study was conducted in a 2 km long river stretch, from July to September 2009. In a 35 km long study site, we used a mobile acoustic telemetry system to record weekly position of n=108 fish over different seasons and different habitat conditions (low or high flows; low or high temperature...), from March to December 2010. Discharge and abiotic conditions (temperature, depth, velocity or substrate) were known (with an accuracy comparable with fish positioning accuracy) every where at any time (i.e. any discharge) using hydraulic 2D model calibrated and validated for the whole discharge range observed during telemetry studies. Fixed telemetry system (accuracy of few square meters) enabled to define individual habitat use during different short habitat variability configuration (flow increase, flow decrease, temperature increase....). Three main species were represented : two native cyprinids, chub (Leuciscus cephalus) and barbel (Barbus barbus), and an invasive species, wels catfish (Silurus glanis). We analyzed habitat used, habitat preference, fish movement patterns versus habitat variability. Mobile telemetry system (accuracy of few hundred square meters) enabled to evaluate space and time utilisation of fish (mainly the same species than for fixed telemetry study) at a larger scale and during different seasons encompassing the reproduction period, the summer or the winter periods. The different results obtained by both telemetry systems will be presented to illustrate the advantages and limitations of those systems in a large river to address fish displacement in response to discharge and temperature variability. This comparison also emphasized the contribution of a 2D hydrodynamic model to understand fish behaviour. [less ▲]

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See detailAnt-aphid mutualism - A question of microorganisms?
Fischer, Christophe ULiege; Patris, Geoffrey; Duriaux, Adrien ULiege et al

Poster (2011, September)

It is now long known that some ant and aphid species can present a mutualistic relationship, ants using aphid honeydew as sugar source and in exchange providing the aphid colony cleaning and protection ... [more ▼]

It is now long known that some ant and aphid species can present a mutualistic relationship, ants using aphid honeydew as sugar source and in exchange providing the aphid colony cleaning and protection. From a behavioral point of view, this phenomenon has been well studied, but its chemistry and semiochemical mechanisms are still largely unknown. This study aims to identify semiochemicals involved in the establishment of this relation and their sources, using both chemical and behavioral methods. Bioassays revealed that the greatest part of ant attraction toward aphid colonies is due to honeydew volatile compounds; enabling ant scouts to find more quickly aphid colonies and distantly recognize myrmecophilous species. Many of those VOCs seeming to have microbial origins, the main honeydew microorganisms have been isolated and their roles in VOCs production and ant attraction have been investigated. [less ▲]

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See detailMiospores from Ordovician-Silurian Argentinean basins: evolution and relationships with other South American basins
Rubinstein, C.; Muro, V.; Steemans, Philippe ULiege

Conference (2011, September)

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See detailEstimation du débit de filtration glomérulaire en transplantation rénale: étude multicentrique d'évaluation de la performance de la cystatine C
Masson, I.; Maillard, N.; Jaafar, A. et al

Poster (2011, September)

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See detailHigh serum transforming growth factor-beta 1 concentration in West Highland white terriers : a key to the breed predisposition in canine idiopathic pulmonary fibrosis
Krafft, Emilie ULiege; Heikkilä, H.P.; Jespers, P et al

in Proceedings of the 21st ECVIM-CA Congress (2011, September)

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See detailCONNECTIONS WITH FOUR BOLTS PER HORIZONTAL ROW - Application of Eurocode 3
Demonceau, Jean-François ULiege; Jaspart, Jean-Pierre ULiege; Weynand, Klaus et al

in Eurosteel 2011 - 6th European Conference on Steel and Composite Structures - Proceedings (2011, September)

Eurocode 3 Part 1-8 provides detailed application rules for the design of bolted end-plate connections. Although these rules apply to connections with any number of vertical bolt rows, most of them are ... [more ▼]

Eurocode 3 Part 1-8 provides detailed application rules for the design of bolted end-plate connections. Although these rules apply to connections with any number of vertical bolt rows, most of them are limited to configurations with two bolts only in each horizontal row, i.e. one bolt on each side of the beam or column web. However, it is sometimes more economic to place four bolts in one row, for instance when wide flange H-sections are used. This configuration is commonly met in different countries in Europe and, in particular, in Germany where this configuration is even standardized. The theoretical model on which the Eurocode 3 application rules are founded is general and can be potentially applied to connections with four bolts per horizontal row. However, specific design rules are not given in Eurocode 3 and need to be developed. Within the present article, easy-to-apply analytical design rules aimed at predicting the mechanical properties of connections with four bolts per row, being in full agreement with the Eurocode 3 approach, are presented. In particular, comparisons to less recent analytical procedures are given. [less ▲]

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See detailExtension of the Direct strength method to hot-rolled profiles cross-sections
Rossi, Barbara ULiege

Conference (2011, September)

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See detailHigh diversity in late Early Cretaceous ichthyosaurs part II: The Cambridge Greensand material
Fischer, Valentin ULiege

Conference (2011, September)

Recent and on-going work on Canadian and French Cretaceous ichthyosaurs has unveiled a high diversity of Albian ophthalmosaurids, suggesting the extinction of ichthyosaurs which occurs during the ... [more ▼]

Recent and on-going work on Canadian and French Cretaceous ichthyosaurs has unveiled a high diversity of Albian ophthalmosaurids, suggesting the extinction of ichthyosaurs which occurs during the Cenomanian was a much more severe event than previously supposed. Yet the ichthyosaur assemblages from other areas such as the USA and Australia are monospecific, suggesting that the diversity of ichthyosaurs was not universally high. The Cambridge Greensand ichthyosaur material, which has not been the subject of any thorough study since 1869, consists of about 900 specimens, the vast majority of which are isolated bones. Nevertheless, this abundant material offers a good opportunity to assess the diversity of the ichthyosaurs that roamed the western England Sea during the late Albian–Early Cenomanian interval. In order to assess this diversity, diagnostic bones such as basioccipitals, stapes, humeri and femora were compared to that of other ophthalmosaurids. Several morphotypes, some represented by 10+ specimens are recognized. Articulated specimens were used to unite cranial and appendicular bone morphotypes to a taxon. An extremely diverse assemblage of at least 5 distinct taxa is recognized in the Cambridge Greensand Formation: Platypterygius sp., two new genera that have representatives in southeastern France and Germany, a Brachypterygius/Aegirosaurus morphotype, and the long-forgotten but diagnostic Cetarthrosaurus walkeri, for which we found a second and better preserved specimen. The diversity of the ‘mid’ Cretaceous ichthyosaurs from Europe now matches that of the Early Jurassic, a period sometimes seen as the ‘Golden Age’ of post-Triassic ichthyosaurs. [less ▲]

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See detailEpidemiology of mastitis in 30 walloon dairy farms using a compilation of clinical and subclinical data in a new tool for Udder health assessment
Theron, Léonard ULiege; Reding, Edouard; Detilleux, Johann ULiege et al

in Proceedings of the 6th European congress of Bovine health management (2011, September)

Bovine mastitis has been assessed through somatic cells or clinical cases by farmers and vets but most of the time the perfect combination of both data remains unavailable. We tried to implement a new ... [more ▼]

Bovine mastitis has been assessed through somatic cells or clinical cases by farmers and vets but most of the time the perfect combination of both data remains unavailable. We tried to implement a new strategy of identification of mastitis-related costs, epidemiological impact and key periods of management. We built an online system for clinical data capture, including facilities for administrative management of veterinary drugs. Herd prevalence rate (HPR) is assessed through clinical and subclinical data. Lactation incidence rate (NIR) and cure rate (CR) were calculated for the period (depending on type of DHI control) using subclinical thresholds (primiparous > 150.000 cells/ml and multiparous >250.000 cells/ml) and clinical cases in susceptible animals (healthy or diseased). Dry-off period is studied through the Dry-off cure rate (DOCR) and new infection rate at first control (NIFC). The average number of cow-day-at-risk was 73.6 (StD=34.80). Mean HPR was 33 % (StD =11%); the average NIR was 16% and CR 35%. Mean DOCR was 62% with an NIFC of 23%. Regarding a mean loss for mastitis of 71€ per cow-year, the average difference was +40.7€ (StD=66.7€). It is explained partly by DOCR (R²=0.20; β=-131; p<0.0001). NIR is mainly influenced by HPR, but mainly by primiparous infection rate (R²=0.36; β= 0.33; p<0.0001). Those figures are coherent with subclinical data indicating that multiparous cows are becoming more and more infected, limiting efficacy of dry-off therapy. Communication has to be done around dry-off and preventive measures in primiparous cows. As CR had few significant impact on global udder health, cure at the herd level should more be regarded as cow ability to cure in its environment than by considerations on medication once infected. [less ▲]

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See detailA new longirostrine ichthyosaur (Reptilia) from the Toarcian of France broadens the ecological diversity of the genus Temnodontosaurus
Martin, Jeremy; Fischer, Valentin ULiege; Vincent, Peggy et al

Poster (2011, September)

The ichthyosaur genus Temnodontosaurus has always been viewed as a top predator of the Early Jurassic marine environments, while other contemporaneous ichthyosaurs such as leptonectids and stenopterygiids ... [more ▼]

The ichthyosaur genus Temnodontosaurus has always been viewed as a top predator of the Early Jurassic marine environments, while other contemporaneous ichthyosaurs such as leptonectids and stenopterygiids were occupying the lower trophic levels. We describe here an almost complete skeleton of this successful genus from the middle Toarcian (Lower Jurassic) of the Beaujolais foothills near Lyon, France, and assign it to a new species of Temnodontosaurus. This specimen exhibits cranial peculiarities such as a thin, elongated, and likely edentulous rostrum, as well as a reduced quadrate. Such morphological combination indicates dietary preferences that markedly differ from other species referred to as Temnodontosaurus. Despite a conservative postcranial skeleton, we propose that Temnodontosaurus is one of the most ecologically diverse genera of ichthyosaurs, including apex predators, small and soft prey longirostrine hunters, and generalized forms. Ammonites collected along the described specimen indicate that the new species is younger (bifrons ammonite zone) than most known Toarcian ichthyosaurs and therefore slightly postdates the severe environmental changes and marine invertebrate extinctions that occur during the Toarcian Oceanic Anoxic Event. The present study hence raises the question whether the speciation of Temnodontosaurus towards a new ecological niche, may have been a consequence of the post-crisis marine ecosystem reorganization. [less ▲]

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See detailAcquisition of a new motor skill in preschool- and school-aged children
Lejeune, Caroline ULiege; Merbah, Sarah ULiege; Catale, Corinne ULiege et al

in Books of Abstract: ASecond Meeting of The Federation of European Societies of Neuropsychology (2011, September)

It is generally admitted that procedural learning abilities are efficient early in childhood. However, few studies have been carried out in this area. The aim of this study was to explore, with a ... [more ▼]

It is generally admitted that procedural learning abilities are efficient early in childhood. However, few studies have been carried out in this area. The aim of this study was to explore, with a perceptivo-motor learning task, whether procedural learning abilities are present to the same extent in 4-, 7-, and 10-year-old children. Forty-five children were tested. The task included 4 blocks of 12 trials during which each subject had to “catch”, as quickly as possible, several toys presented successively on the screen with a computerized inverted mouse. Retention tests, composed of 2 blocks of 12 trials, were administered 15 minutes and 1 week later. The analyses showed an important difference between groups in the first block. This difference could be related to the low ability of young children to handle the mouse and to their less developed executive functioning. On the other hand, results showed a similar learning rate between 5- and 7-year-old children, supporting the idea that procedural learning abilities are efficient early in development. However, we observed no procedural learning in10-year-old children; this unexpected result is probably due to the fact that this task was too easy for this age group, which is confirmed by the ceiling effect already observed during the first learning blocks. So, this study confirms the early efficiency of procedural abilities in childhood, but also highlights the difficulty to develop procedural learning tasks adapted to children from a large age range. [less ▲]

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See detailExtension of the Direct strength method to hot-rolled profiles cross-sections
Li, Yongzhen ULiege; Rossi, Barbara ULiege; Jaspart, Jean-Pierre ULiege

in 6th European Conference on Steel and Composite Structures : Eurosteel 2011, Budapest 30 October - 2 September 2011 (2011, September)

Current metallic structural design codes use the concept of section classification for determining the section capacity of hot-rolled profiles. In this system, there exists a discontinuity between the ... [more ▼]

Current metallic structural design codes use the concept of section classification for determining the section capacity of hot-rolled profiles. In this system, there exists a discontinuity between the classes 2 and 3, while for the class 4, the effective width method (EWM) must be used to account for local buckling phenomenon. In order to overcome the complicate and time consuming EWM for evaluating the strength, the alternative Direct Strength Method (DSM) approach, developed only for cold-formed thin-walled members, has gained importance over the last few years. The DSM is premised on the assumption that the strength can be predicted from the yield strength to the elastic critical load ratio in conjunction with a strength curve. The DSM has been advanced for calculating the strength of compression members over the past decades and in this paper, the extension of DSM to hot-rolled profiles cross-sections is investigated. Firstly, the methods for calculating the cross-section resistance such as EWM, DSM, and the recent Continuous Strength Method (CSM) are reviewed; a short comparison is made and their domains of applicability are commented. Secondly, a numerical model carried out in the frame of this research is described. The model was built in ABAQUS and verified against test results of the “Semi-comp: Plastic member capacity of semi-compact steel sections - a more economic design” project, which was carried out earlier with the objective of improving the utilization of plasticity in rolled and welded sections with medium cross-section slenderness. On the basis of these premises, the final goal of the project is detailed: to derive a new formulation that would cover the whole field of section slenderness (present class 1 to class 4), which can be seen as an extension of the so-called DSM approach. [less ▲]

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See detailGroßer Lebensmittel-assoziierter Ausbruch durch rekombinante Noroviren GII.g/GII.1 in einem süddeutschen Krankenhaus
Hoffman, Dieter; Mauroy, Axel ULiege; Protzer, Ulrike et al

Poster (2011, September)

a) Einleitung Noroviren sind derzeit die häufigsten Gastroenteritiserreger. Durch ihre niedriger infektiöse Dosis und Umweltstabilität verursachen sie häufig Ausbrüche in Krankenhäusern und anderen ... [more ▼]

a) Einleitung Noroviren sind derzeit die häufigsten Gastroenteritiserreger. Durch ihre niedriger infektiöse Dosis und Umweltstabilität verursachen sie häufig Ausbrüche in Krankenhäusern und anderen Gemeinschaftseinrichtungen. Wir berichten über den größten Norovirusausbruch in einem Münchner Krankenhaus der vergangenen Jahre mit über hundert infizierten Patienten und insgesamt 28 betroffenen Mitarbeitern aus verschiedenen Bereichen. b) Material/Methoden Wir wiesen Noroviren GII durch real time Amplifikation eines 94 bp am 3´Ende des Nichtstruktur Polyprotein nach. Sieben positive Proben, aus verschiedenen Bereichen des Klinikums einschließlich zweier Außenstellen, sowie Proben von 2 Küchenmitarbeitern wurden sequenziert. Dabei untersuchten wir 1110 bp, bestehend aus Polymerase- und Capsidsequenzen. Das Ausbruchsmanagement bestand aus einer task force, die neben dem ärztlichen Direktor aus Ärzten, Pflegekräften, Hygieniker und Virologen Apotheke, Einkauf, und Küchenbereich bestand. Zu den Maßnahmen gehörten unter anderem Abfrage aller betroffenen Stationen mit mindestens täglicher Aktualisierung der line-list, Umstellen desinfizierender Maßnahmen, sehr eng kontrolliertes Patientenmanagement (Verlegungen nur nach Rücksprache mit der Hygiene), Begehung aller betroffenen Stationen und der Küche, Abfrage der Nahrungsmittelaufnahme durch Fragebögen, Fortbildung des Personals und enge Kooperation mit den zuständigen Behörden. c) Ergebnisse Am 15.06. traten bei Patienten erstmalig Übelkeit und Erbrechen auf, am Folgetag wurde bei den ersten Patienten Noroviren in Stuhlproben nachgewiesen. Die letzte Neuinfektion wurde am 23.06. registriert, so dass der Ausbruch bereits am 04.07. in Absprache mit dem RGU München für beendet erklärt wurde. Insgesamt wurde Norovirus RNA bei 116 Patienten auf 34 Stationen sowie 28 Mitarbeitern nachgewiesen. Zweiundzwanzig Mitarbeiter waren in der direkten Patientenversorgung tätig, eine Mitarbeiterin arbeitete im Laborbereich. Fünf der Mitarbeiter waren im Küchenbereich beschäftigt und sind damit die wahrscheinlichste Infektionsquelle. Sie gaben keine bzw. nur wenig ausgeprägte Symptome an, mit denen sie weiterarbeiteten. In den bisher untersuchten Lebensmittelrückstellproben konnten keine Noroviren detektiert werden. Alle untersuchten Sequenzen entsprachen einem rekombinanten GII.g/GII.I Stamm. Die ähnlichsten publizierten Sequenzen unterscheiden sich nur durch 17 Nukleinsäure-, und 3 Aminosäureaustausche d) Schlussfolgerungen Wir beschreiben hier den größten Norovirenausbruch in Münchener Kliniken der letzten Jahre. Er breitete sich rasch aus und trat außerhalb der üblichen Norovirussaison auf. Durch schnelle Einleitung strikter Hygienemaßnahmen und einer engen Überwachung der betroffenen Stationen fanden wir nach 10 Tagen keine Neuinfektionen und konnten den Ausbruch zeitnah für beendet erkären. Erstmalig wiesen wir den rekombinanten Stamm GII.g/II.1 in unserem Universitätsklinikum nach. Fehlende oder niedrige Immunität der exponierten Personen könnte die initial rasche Ausbreitung begünstig haben. Zusammenfassend zeigen unsere Daten, dass bei Gastroenteritisfällen auch in den Sommermonaten mit Noroviren gerechnet werden muss. Diese können auch von oligo- oder asymptomatischem Personal ausgehen. Schnelle Erregerdiagnose und entsprechende Hygienemaßnahmen sind wesentlich in der Bekämpfung der Infektion. [less ▲]

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See detailIs the seagrass Posidonia oceanica a reservoir of fecal indicator bacteria in the Mediterranean Sea
Polain, Stéphanie ULiege; Nezer, Carine; Lepoint, Gilles ULiege et al

Poster (2011, September)

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See detailSpatial Planning as a Driver for Change in Both Mobility and Residential Energy Consumptions
Dujardin, Sébastien ULiege; Marique, Anne-Françoise ULiege; Teller, Jacques ULiege

in Proceedings of the International Conference CISBAT 2011 - Clean Tech for sustainable buildings - From Nano to urban scale (2011) (2011, September)

This paper presents the results of the first part of an important two-year research dedicated to analysing the impact of territorial structures upon GHG emissions in the Walloon Region (Belgium). The ... [more ▼]

This paper presents the results of the first part of an important two-year research dedicated to analysing the impact of territorial structures upon GHG emissions in the Walloon Region (Belgium). The rationale of the research is to provide regional authorities with up-to-date figures about the long-term influence of land planning decisions upon energy consumptions and GHG emissions, both in the residential building stock as well as for home-to-work commuting. The analysis has been conducted at the regional scale (16.844 km2) and includes both urban, periurban and rural settlements. It appears that those sectors that perform well on mobility also tend to perform well in terms of building consumption. This opens an avenue towards a much more progressive approach in terms of spatial planning, where compact cities may be viewed as part of the solution, still not the whole solution. This is especially true when one considers the entire territorial structure of a region and its strong inertia over time. [less ▲]

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See detailThe Strange Case of the Jurassic Ichthyosaur
Liston, Jeff; Naish, Darren; Fischer, Valentin ULiege

Conference (2011, September)

A report is given on the four decades of unpublished research on a novel ichthyosaur taxon from Iraq. Found in 1952 by field workers for Iraq Oil, it was donated to the Natural History Museum (London ... [more ▼]

A report is given on the four decades of unpublished research on a novel ichthyosaur taxon from Iraq. Found in 1952 by field workers for Iraq Oil, it was donated to the Natural History Museum (London), then borrowed by the late Robert M. Appleby at University College, Cardiff. Appleby aimed to complete a full description of the specimen; his final manuscript also included an extensive discussion of the stratigraphic provenance of the specimen, its phylogenetic affinities, and speculations on its possible ecology. During his investigation, a broad collaboration ensued with members of the universities of Reading and Cambridge and HV Dunnington & Associates (exploration and resource appraisal consultants), as Appleby attempted to constrain the precise age of the specimen within the Jurassic Sargelu Formation. However, the manuscript resulting from this collaboration (submitted to the journal Palaeontology in 1979) was not deemed to have satisfactorily addressed that outstanding question. Although Appleby continued to work widely on ichthyosaurs up until his death in 2004, he was unable to resolve this problem. Subsequent work by the first two authors, incorporating archival research and a revisiting of earlier laboratory techniques, has led to a conclusive resolution of this issue, making it possible for a manuscript describing the specimen to finally be acceptable for publication. Resulting from one of several pieces of Appleby’s unpublished research, the new Iraq taxon has major implications for our understanding of ichthyosaurian diversity, phylogeny and distribution across time and space. [less ▲]

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Peer Reviewed
See detailThe impact of teacher's dysphonia on children's skills to treat the spoken language
Morsomme, Dominique ULiege; MINEL, Laura; Verduyckt, Ingrid

Conference (2011, August 31)

The high prevalence of voice disorders among teachers is known (Roy et al, 2004). Authors (Morton et al, 2001, Rogerson et al, 2005) have shown the impact of a hoarse voice in teachers on student ... [more ▼]

The high prevalence of voice disorders among teachers is known (Roy et al, 2004). Authors (Morton et al, 2001, Rogerson et al, 2005) have shown the impact of a hoarse voice in teachers on student performance. Our aim is to analyze how 68 students (mean age: 8 years 5 months) processes dysphonic speech on a language comprehension task (MCQ on a short story) and on a minimal pair discrimination task (alike/not alike). Our hypothesis is that student performance will change depending on the modality of the tasks: dysphonic versus normophonic voice. Our results: For both the comprehension and the discrimination tasks, the scores of the students were significantly lower in the dysphonic voice modality (F (1,67) = 11.83, p <0.05) regardless of gender, the order of voice presentation and type of school. Moreover, we observe a greater effect of the dysphonic voice modality in the discrimination task (F (1,67) = 9.52, p <0.05). Thus the dysphonic voice disturbs the students the most in the process of discriminating between two isolated words. recognition of isolated words. Finally, when children judge the dysphonic voices, their comments are mostly slighting (98.33%). To conclude, these results support the necessity to prevent voice disorders among teachers and to create specific voice care programmes. [less ▲]

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Full Text
See detailMid-infrared predictions of cheese yield from bovine milk
Vanlierde, Amélie ULiege; Soyeurt, Hélène ULiege; Anceau, Christine ULiege et al

Conference (2011, August 31)

Economically, cheese yield (CY) is very important. Todate, empirical or theoretical formulae allow estimating the theoretical CY from milk fat and casein or protein content of milk. It would be ... [more ▼]

Economically, cheese yield (CY) is very important. Todate, empirical or theoretical formulae allow estimating the theoretical CY from milk fat and casein or protein content of milk. It would be interesting to predict CY during milk recording directly without the need to estimate milk components. Through the BlueSel project, 157 milk samples were collected in Wallonia from individual cows and analyzed using a mid-infrared (MIR) MilkoScanFT6000 spectrometer. Individual laboratory cheese yields (ILCY) were determined for each sample and expressed as g of dry coagulum/100 g of milk dry matter. An equation to predict ILCY from MIR was developed using partial least squared regression (Winisi III). A first derivative pre-treatment of spectra was used to correct the baseline drift. To improve the repeatability of the spectral data, a file which contained the spectra of samples analyzed on 5 spectrometers was used during the calibration. During calibration, 23 outliers were detected a nd removed from the calibration set. The ILCY mean of the final calibration set was 63.9% with a SD of 11.2%. The calibration (C) coefficient of determination (R²) was equal to 0.76 with a standard error (SE) of calibration of 5.5%. A full cross-validation (CV) was preformed to assess the robustness. R²cv was 0.72 with a SECV of 6.0%. The similarity between R²c and R²cv as well as between SEC and SECV permits to consider robustness of the developed equation as good. Even if it is planned to improve the equation with additional samples, this first equation will permit to study ILCY in the Walloon dairy cattle. [less ▲]

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Full Text
See detailBiocontrol proteomics:Implication of the pentoses phosphates pathway in the antagonist effect of Pichia anomala against Botrytis cinerea on apple.
Kwasiborski, Anthony ULiege; renaut, Jenny; Delaplace, Pierre ULiege et al

Conference (2011, August 31)

Pichia anomala strain K was previously identified as an efficient biocontrol agent of the apple pathogen, Botrytis cinerea. Further study demonstrated the complexicity of the mode of action of P. anomala ... [more ▼]

Pichia anomala strain K was previously identified as an efficient biocontrol agent of the apple pathogen, Botrytis cinerea. Further study demonstrated the complexicity of the mode of action of P. anomala against B. cinerea. A molecular study revealed implication of exo-β-1,3-glucanases in the mode of action of P. anomala but suggested implication of other factors. The present study aims to increase our knowledge of the mode of action of P. anomala strain Kh6 against B. cinerea using an in situ approach allowing interactions between organisms, and the proteomic tool allowing to study the ultime expression of the genome. One wound per apple were covered by a membrane and inoculated by P. anomala then by B. cinerea or not. Samples were collected at different incubation times to identify the responses of P. anomala to the presence of B. cinerea. After extraction, proteins were separated on 2-D gels. Spots influenced were identified by MALDI-ToF. In exponential phase, P. anomala Kh6 orientates its energetic metabolism from the glycolysis to the oxidative phosphorylation and sets up the pentose phosphate pathway. Thanks to this new pathway, P. anomala probably obtains energy and nucleic acids allowing to colonize the wound as fast as in absence of B. cinerea. In stationary phase, no differences in the P. anomala energetic metabolism, in absence and in presence of B. cinerea were observed. During that phase, P. anomala seems to use the alcoholic fermentation in order to face the nutrients impoverishment of the substrate. [less ▲]

Detailed reference viewed: 69 (3 ULiège)
See detailJUDE: A Far-UV Imager for JUICE
Grodent, Denis ULiege; Bunce, Emma; Bannister, Nigel et al

Poster (2011, August 31)

Detailed reference viewed: 53 (6 ULiège)