References of "Scientific congresses and symposiums"
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See detailPilot scale biotransformation of vegetal oil into natural green note flavor using sugar beet leaves as sources of hydroperoxide lyase
Gigot, Cédric ULg; Ongena, Marc ULg; Fauconnier, Marie-Laure ULg et al

Poster (2009, June 02)

Natural green note aromas (GLVs) are highly attractive flavors commonly used in the food industry. These are produced in extremely low levels upon physiological stress in plant organs of any sort. This ... [more ▼]

Natural green note aromas (GLVs) are highly attractive flavors commonly used in the food industry. These are produced in extremely low levels upon physiological stress in plant organs of any sort. This weak sporadic presence entails a very expensive extraction step to obtain pure GLVs. Therefore catalytic biotransformations of fatty acid sources, the initial substrate for GLVs, have been developed. Enzymatic defense pathways and particularly the LOX pathway produce the major part of GLVs. Unlike GLV molecules that are emitted in the atmosphere, the enzymes are extractible from the plant material. Thus, a combination of plant enzyme extracts and substrate preparations provides all the ingredients for GLV production. Besides, sugar beet leaves present high levels of hydroperoxide lyase among plant sources and are available in large amounts during three months. In this enzymatic pathway, fatty acids are successively transformed by lipase, lipoxygenase and hydroperoxide lyase into aldehydes and alcohols, final compounds of GLVs pathway. Limiting and problematic steps occur with the action of hydroperoxide lyase, when enzymatic catalysis is followed by an enzyme destabilization. Alternative substrates bind irreversibly to the heme group of the enzyme and end the reaction. This poster briefly describes the development of a complete bioprocess for natural GLV production, from hydrolysis to purification. A high level of biotransformation could be achieved using optimum experimental conditions and a cheap source of plant materials. [less ▲]

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See detailEco-efficiency methodology of Hybrid Electric Vehicle based on multidisciplinary multi-objective optimization
Nzisabira, Jonathan; Louvigny, Yannick ULg; Christiaens, Sébastien et al

in Proceeding of the 8th World Congress on Structural and Multidisciplinary Optimization (2009, June 01)

The eco-efficiency concept of clean propulsion vehicles aims at is simultaneously reducing the fuel consumption and environment pollutants impact (Eco-score) without decreasing the vehicle performances ... [more ▼]

The eco-efficiency concept of clean propulsion vehicles aims at is simultaneously reducing the fuel consumption and environment pollutants impact (Eco-score) without decreasing the vehicle performances and other user satisfaction criteria. Based on a simulation model in ADVISOR, one can evaluate the performances, the emissions and then the Ecoscore and the User Satisfaction for different driving scenarios. To establish a rationale methodology for conducting the eco-efficiency design of electric and hybrid vehicles, we adopt a multidisciplinary optimization approach while minimizing / maximizing both Ecoscore and User satisfaction objective functions. The proposed approach is then illustrated on the case study of the comparison of different mild parallel hybrid buses (hybrid electric vehicle (HEV) and hybrid hydraulic vehicle (HHV) by highlighting the effect of different energy storage systems (batteries, ultra capacitors, hydraulic system), mechanical and electric components sizes upon the optimized hybrid design. The optimization results show that the hybrid electric buses using ultra capacitors have almost the same performances as those using batteries, while the HHV technology can compete with HEV because of the hydraulic components low cost and recyclability if possibly using of water as motor/pump fluid. [less ▲]

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See detailRelative serum protein quantification based upon ICPL and 2D-LC-MS identifies potential frailty biomarkers in elderly patients
Turtoi, Andrei ULg; Mazzucchelli, Gabriel ULg; Dobson, Rowan ULg et al

Poster (2009, June 01)

This study shows the ability of the ICPL and nano-HPLC-MS/MS to perform relative quantification and identification of serum protein biomarkers. Frailty is a geriatric syndrome that is commonly associated ... [more ▼]

This study shows the ability of the ICPL and nano-HPLC-MS/MS to perform relative quantification and identification of serum protein biomarkers. Frailty is a geriatric syndrome that is commonly associated with the decline in multisystemic reserve, cognition and sensory capabilities. It is negatively influencing the outcome of a disease prolonging the patient’s recovery. The discrepancy between the actual and the biological age brings the uncertainty of predicting frailty in a given individual. This study is addressing the problem of finding suitable biomarkers that bear the ability to objectively predict frailty in elderly patients. It furthermore provides a robust method for reliable relative quantification of serumproteins. Serum samples used in this study were divided into six groups regarding the patient’s disease (hip-fracture, infection and cardiac decompensation) and frailty status (frail or robust). The individual sera were pooled and a volume of 20 µL was depleted of high abundantproteins. After labeling with ICPL (isotope coded protein label), serum proteins were fractionated according to their respective pI (0-3, 4-7 and 8-12). The samples were further subjected to tryptic digestion followed by the treatment with the Glu-C enzyme. The peptides were analyzed on the 2D-nano-HPLC system (Ulimate 3000®) using four different concentrations of salt injections (45, 75, 150 and 500 mM ammonium acetate). The HPLC system was connected on-line with the electrospray ion-trap mass spectrometer Esquire HCT ultra®. The relative protein quantification using ICPL and mass spectrometry allowed for comparison of six patient groups with respect to a standard sample. The latter represented a group of healthy old subjects. This technique allowed for the detection of approx. 200 proteins, whereas about 50 % of those contained the ICPL label and could therefore be quantified. The identified proteins covered 3 – 4 orders of magnitude ofprotein concentration in human serum. Several proteins displayed a significant modulation allowing for some preliminary conclusions to be drawn. At this point it can be stated that significantly elevated levels of C-reactive protein (factor 12) and alpha-1-antichimotrypsin (f. 4) proved to be potentially good indicators of frailty. Increased concentrations of alpha-1-microglobulin (f. 4) and alpha-2HS-glycoprotein (f. 2) have been found in the robust patients, whereas no significant concentration alteration could be detected in the frail groups. These results refer to the acute phase response since the samples were collected immediately after patient hospitalization. Current investigations addressing the later sampling times should shed more light on the suitability of these markers to predict frailty in elderly patients. At this stage it is obvious that although several markers are found to be in common for all the frail or robust patients, the disease status additionally complicates the biomarker signature. Therefore a more individualized approach should also be considered, where depending on the age and clinical findings a more defined group of markers should be selected to address the problem of frailty. [less ▲]

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See detailHigh-resolution respirometry to assess muscle mitochondrial respiratory function in horses: potential applications in sport and myopathic horses
Votion, Dominique ULg; Gnaiger, Erich; Lemieux, Hélène et al

in In Proceedings: 3rd MiPsummer School, Baton Rouge, USA (2009, June)

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See detailA new diagnostic tool for in vitro allergy
Gadisseur, Romy ULg; Chapelle, Jean-Paul ULg; Cavalier, Etienne ULg

in Allergy (2009, June), 64

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See detailIs there an interest to determine the gait’s profile of MCI subjects to predict the risk of Alzheimer disease?
Gillain, Sophie ULg; Lekeu, Françoise ULg; Wojtasik, Vinciane ULg et al

in Journal of Nutrition, Health & Aging (The) (2009, June), 13(Supp 1),

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See detail3D Shape Optimization with X-FEM and a Level Set Constructive Geometry Approach
Van Miegroet, Laurent ULg; Duysinx, Pierre ULg

in Proceeding of the 8th World Congress on Structural and Multidisciplinary Optimization (2009, June)

This paper extends previous work on structural optimization with the eXtended Finite Element Method (X-FEM) and the Level Set description of the geometry. The proposed method takes advantage of fixed mesh ... [more ▼]

This paper extends previous work on structural optimization with the eXtended Finite Element Method (X-FEM) and the Level Set description of the geometry. The proposed method takes advantage of fixed mesh approach by using an X-FEM structural analysis method and from the geometrical shape representation of the Level Set description. In order to allow the optimization of complex geometries represented with a Level Set description, we apply here a Constructive Solid Geometry (CSG) approach with the Level Set geometrical representation. Hence, this extension allows to optimize any boundary of the structure that is defined with a coumpound Level Set. Design variables are the parameters of basic geometric primitives which are described with a Level Set representation and/or the control points of the NURBS curves that act as the definition of an advanced Level Set primitive. The number of design variables of this formulation remains small whereas global (i.e. compliance or eigenfrequency) and local constraints (i.e. stresses) can be considered. Our results illustrate that fixed grid optimization with X-FEM coupled to a Level Set geometrical description is a promising technique to achieve structural shape optimization. [less ▲]

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See detailValidity of bench models in the learning of minimal invasive surgery
Blavier, Adelaïde ULg

Conference (2009, June)

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See detailDoes electrical stimulation of knee extensor and flexor muscles induce DOMS?
Vanderthommen, Marc ULg; Triffaux, Mylène; Demoulin, Christophe ULg et al

in Loland, S.; Fasting, K.; Hallen, J. (Eds.) et al Book of Abstracts of 14th annual Congress of the European College of Sport Science (2009, June)

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See detailInterest of Locometrix to assess gait’s profile in specific old populations
Gillain, Sophie ULg; Warzee, Emmanuelle ULg; Lekeu, Françoise ULg et al

in Journal of Nutrition, Health & Aging (The) (2009, June), 13(Supp 1),

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See detailFactors Influencing Responsiveness and Interpretability of the Roland-Morris Disability Questionnaire
Demoulin, Christophe ULg; Smeets, Rob; Ostelo, Raymond et al

in Abstract book of the Boston International Forum X - Primary Care Research on low back pain (2009, June)

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See detailOn the use of a truly–mixed formulation in topology optimization with global stress–constraints
Bruggi, Matteo; Duysinx, Pierre ULg

in Proceeding of the 8th World Congress on Structural and Multidisciplinary Optimization (2009, June)

The work refers to the field of topology optimization for bidimensional structures and addresses the case in which global stress–constraints are considered to improve final designs. Most of the previous ... [more ▼]

The work refers to the field of topology optimization for bidimensional structures and addresses the case in which global stress–constraints are considered to improve final designs. Most of the previous research tackles this topic relying on classical displacement–based finite elements where stresses are recovered via post–processing techniques. The work conversely investigates the use of a truly–mixed formulation where stresses are independent variables of the problem while displacements play the secondary role of Lagrangian multiplier. The implemented discretization is based on a composite triangular element whose features may be advantageously exploited in stress–constrained topology optimization. The discretization is checkerboard–free and allows to tackle topology optimization with element–based constraints without introducing any additional filtering technique. The high accuracy in the evaluation of the average stresses is expected to improve the efficiency of the numerical procedure, especially in the case of a single global constraint that has to govern the whole domain. The adopted discretization also passes the robustness condition even in the case of incompressible materials and this allows to menage strength constraints also for rubber–like components. Basing on these ideas, numerical investigations are carried out to test preliminary applications of the truly–mixed technique coupled with topology optimization and global stress–constraints. To handle the well–known singularity problem, that affects the constraints imposition, an alternative scheme is herein adopted instead of a classical "–relaxation. An example where a homogenous stress distribution is expected is firstly tested, having the aim of pointing out the main features of the proposed procedure. Afterwards, numerical simulations address a classical L–shaped specimen, pointing out pros and cons of the approach. [less ▲]

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See detailTransfer of communication skills training to workplace : impact of a program for residents
Liénard, A.; Merckaert, I.; Libert, Y. et al

in Psycho-oncology (2009, June), 18 (Suppl. 2)

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See detailA system-level model reduction technique for efficient simulation of flexible multibody dynamics
Heirman, Gert H.K; Bruls, Olivier ULg; Desmet, Wim

in Proceedings of the Multibody Dynamics ECCOMAS Conference (2009, June)

In flexible multibody dynamics, body-level model reduction is typically used to decrease the computational load of a simulation. Body-level model reduction is generally performed by means of Component ... [more ▼]

In flexible multibody dynamics, body-level model reduction is typically used to decrease the computational load of a simulation. Body-level model reduction is generally performed by means of Component Mode Synthesis. This offers an acceptable solution for many applications, but does not result in significant model reduction for systems with moving connection points, e.g. due to a flexible sliding joint. In this research, Global Modal Parametrization, a model reduction technique initially proposed for real-time control of flexible mechanisms, is further developed to speed up simulation of multibody systems. The reduction is achieved by a system-level modal description, as opposed to the classic body-level modal description. As the dynamics is configuration-dependent, the system-level modal description is chosen configuration-dependent in such a way that the system dynamics are optimally described with a minimal number of degrees of freedom. Moving connection points do not pose a problem to the proposed model reduction methodology. The complexity of simulation of the reduced model equations is estimated. The applicability to systems with moving connection points is highlighted. In a numerical experiment, simulation results for the original model equations are compared with simulation results for the model equations obtained after model reduction, showing a good match. The approximation errors resulting from the model reduction techniques are investigated by comparing results for different mode sets. The mode set affects the approximation error similarly as it does in linear modal synthesis. [less ▲]

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See detailEEG/fMRI correlates of K-complexes and Auditory processing during Non-REM Sleep.
Dang-Vu, T. T.; Schabus, M.; Bonjean, M. et al

Poster (2009, June)

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See detailImpact of the presence of a clinical pharmacist in university hospital wards on the elderly or polymedicated patients care
Van Hees, Thierry ULg; Delporte, Jean-Pierre ULg; Petermans, Jean ULg

in Journal of Nutrition, Health & Aging (The) (2009, June), 13(Supplement 1), 465

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See detailNumerical Simulation of 1D Mixed Flow with Air/Water Interaction
Kerger, François ULg; Erpicum, Sébastien ULg; Archambeau, Pierre ULg et al

in Transaction: Engineering Sciences, volume 1, Computational Methods in Multiphase Flow V (2009, June)

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See detailExperimental and Numerical Investigation of Mixed Flow in a Gallery
Erpicum, Sébastien ULg; Kerger, François ULg; Archambeau, Pierre ULg et al

in Transaction: Engineering Sciences, volume 1, Computational Methods in Multiphase Flow V (2009, June)

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See detailExperiments on a 3-D Flapping and Pitching Mechanical Model
Norizham, Abdul Razak ULg; Rothkegel Ide, José Ignacio ULg; Dimitriadis, Grigorios ULg

in Proceedings of the 2009 International Forum on Aeroelasticity and Structural Dynamics (2009, June)

The motivation for this paper is to focus on the better understanding of flapping wing flight, including flapping flight involving high pitching amplitudes. The investigation will be primarily ... [more ▼]

The motivation for this paper is to focus on the better understanding of flapping wing flight, including flapping flight involving high pitching amplitudes. The investigation will be primarily experimental. The experiment will utilize a mechanical flapping and pitching wind tunnel model, which is modeled on large migrating birds. The 3-D rectangular wings are forced to flap and pitch sinusoidally in a low speed wind tunnel. The unsteady aerodynamic forces generated are measured using a three-component force balance. The main objective of this work is to investigate the effect that varying the oscillation parameters has on the aerodynamic forces acting on the 3-D wing undergoing flapping and pitching. The parameters in question are reduced frequency, flapping ampli- tude and pitching amplitude. Comparisons are made with aerodynamic force predictions obtained from unsteady vortex lattice calculations. [less ▲]

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See detailEvaluation of the dynamic adsorption of gas on active carbon beds using in situ X-ray µ-tomography coupled with 3D image analysis
Almazan, Maria del Carmen; Léonard, Angélique ULg; Lodewyckx, Peter et al

Poster (2009, June)

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See detailDynamic holographic interferometry for dilatation measurements in vacuum-thermal conditions
Thizy, Cédric ULg; Barbier, Christian ULg; Barzin, Pascal ULg et al

in Lehmann, Peter (Ed.) Proc. SPIE Vol 7398 on Optical Measurement Systems for Industrial Inspection VI (2009, June)

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See detailFirst-Principles Study of the Mechanism for B4-to-B1 Phase Transformation in AlN
Xu, Bin ULg; Dong, Jianjun; Stokes, Harold et al

Poster (2009, June)

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See detailcontroversies of inter-organizational ambidexterity
Degré, Julie ULg; Antoine, Mélanie ULg

Conference (2009, June)

Generally conceptualized at an intra-organizational level, ambidexterity can also appear at an inter-organizational level when organizations decide to collaborate and distribute activities of exploration ... [more ▼]

Generally conceptualized at an intra-organizational level, ambidexterity can also appear at an inter-organizational level when organizations decide to collaborate and distribute activities of exploration and activities of exploitation according to their specialty. In this paper, we investigate these collaborations, often presented as win-win solutions. On the basis of two case studies of R&D partnerships benefiting from regional subsidies, we show the tensions which cross these alliances and the controversies which divide the partners. Our analysis, based on actor-network theory, indicates that the conditions of a successful inter-organizational ambidexterity do not exist a priori. The success of the partnership rather rests on a continuous translation process creating the convergence between the stakeholders. [less ▲]

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See detailTheoretical Study of Transformation Mechanism for the Corundum-to-Rh2O3(II) Transition in Al2O3
Xu, Bin ULg; Dong, Jianjun; Stokes, Harold et al

Poster (2009, June)

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See detailActualités en impôts directs
Richelle, Isabelle ULg

Conference (2009, June)

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See detailEvidence for a role of sleep in forgetting of irrelevant information
Collette, Fabienne ULg; Rauchs, Géraldine; Landeau, Brigitte et al

in NeuroImage (2009, June), 47(Suppl 1), 328-

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See detailProfessionalisation and Innovation: Friends or Ennemies?
Poumay, Marianne ULg

Conference (2009, June)

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See detailAsteroseismic probing of internal rotation in hot B subdwarf stars: Testing spin-orbit synchronism in two close binary systems
Van Grootel, Valérie ULg; Charpinet, Stéphane; Fontaine, Gilles et al

in Journal of Physics: Conference Series (2009, June), 172

We present internal rotation profiles derived from asteroseismology for the hot pulsating B subdwarf stars PG 1336-018 and Feige 48. These two pulsators are primaries of close binary systems of known ... [more ▼]

We present internal rotation profiles derived from asteroseismology for the hot pulsating B subdwarf stars PG 1336-018 and Feige 48. These two pulsators are primaries of close binary systems of known orbital period and, therefore, provide laboratories to test, for the first time, spin-orbit synchronization as a function of depth. We show that PG 1336-018 and Feige 48 clearly rotate as solid bodies with periods equal to their orbital periods from the surface down to at least ~ 0.5 and ~ 0.3 their radius, respectively. Deep tidal locking has therefore developed within the relatively short lifetime of these stars (~ 10^8 yr). [less ▲]

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See detailVibration Assessment of Ship Structures
Constantinescu, A.; Neme, A.; Rigo, Philippe ULg

in ISOPE 2009, The 19th Intern. Offshore and Polar Engg. Conf., Osaka, Japan, 21-26 June 2009 (2009, June)

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See detailPlanning flood risk reducing measures based on combined hydraulic and socio-economic impact modelling at a micro-scale
Ernst, Julien ULg; Coninx, Ingrid; Dewals, Benjamin ULg et al

in Christodoulou, S. E. (Ed.) Proc. 7th Int. Conf. on Water Resources Conservancy and Risk Reduction Under Climatic Uncertainty (2009, June)

Risk management is currently shifting from the full protection against flooding towards the management of the consequences of flooding. To reduce these consequences, micro-scale analysis is compelled. In ... [more ▼]

Risk management is currently shifting from the full protection against flooding towards the management of the consequences of flooding. To reduce these consequences, micro-scale analysis is compelled. In addition to the hydraulic modelling of the inundation flow, nearby land use and vulnerability of elements-at-risk are taken into consideration. This new approach requests an interdisciplinary collaboration of scientists from hydraulic and social science, as is the case for this paper. The research teams have developed a methodology to evaluate socio-economic consequences of flooding based on the analysis at the micro-scale of the flood characteristics, the exposure and the vulnerability of elements-at-risk and the adaptive capacity of society. The hydrodynamic simulations are conducted by means of 2D flow modelling run on a highly accurate Digital Surface Model - DSM with a resolution of 2 by 2 meters. The two-dimensional modelling provides high resolution flood maps detailing the distribution of water depth and flow velocity field in the floodplains, which constitute key inputs for the subsequent flood risk analysis. The methodology will be illustrated for a case study along River Ourthe, which is the main tributary of River Meuse in Belgium, for selecting and designing flood protection measure. The geographic data in this area are available at a resolution consistent with the conducted micro-scale risk analysis. They include data on social vulnerability coming from the most recent socio-economic national survey (NIS). [less ▲]

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See detailThe genome of a gut strain of Bacillus subtilis
Schyns, G.; Pereira-Leal, J.; Serra, C. et al

Conference (2009, June)

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See detailImpacts of Climate Change on Tropical and Subtropical Ecosystems
François, Louis ULg; Favre, E.; Henrot, Alexandra-Jane ULg et al

Conference (2009, June)

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See detailOriginal cromakalim analogues as KATP channel openers
Florence, X.; De Tullio, Pascal ULg; Pirotte, Bernard ULg et al

Conference (2009, June)

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See detailImmunopathogenesis of canine eosinophilic bronchopneumopathy
Peeters, Dominique ULg

in Proceedings of the 2009 ACVIM Forum (2009, June)

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See detailDoes Time Influence Reproducibility of the Roland-Morris Disability Questionnaire?
Smeets, Rob; Demoulin, Christophe ULg; Knottnerus, André

in Abstract book of the Boston International Forum X - Primary Care Research on low back pain (2009, June)

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See detailA Comparative Study of Path Performance Metrics Predictors
Narino Mendoza, Juan Pablo; Donnet, Benoît ULg; Dupont, Pierre

in Advanced Learning for Networking Workshop (2009, June)

Using quality-of-service (QoS) metrics for Internet traffic is expected to improve greatly the performance of many network enabled applications, such as Voice-over-IP (VoIP) and video conferencing ... [more ▼]

Using quality-of-service (QoS) metrics for Internet traffic is expected to improve greatly the performance of many network enabled applications, such as Voice-over-IP (VoIP) and video conferencing. However, it is not possible to constantly measure path performance metrics (PPMs) such as delay and throughput without interfering with the network. In this work, we focus on PPMs measurement scalability by considering machine learning techniques to estimate predictive models from past PPMs observations. Using real data collected from PlanetLab, we provide a comparison between three different predictors: AR(MA) models, Kalman filters and support vector machines (SVMs). Some predic- tors use delay and throughput jointly to take advantage of the possible relationship between PPMs, while other predictors consider PPMs individually. Our current results illustrate that the best performing model is an individual SVM specific to each time series. Overall, delay can be predicted with very good accuracy while accurate forecasting of throughput remains an open problem. [less ▲]

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See detailLa validité de construit des épreuves physiques qui mesurent l’aptitude physique générale sportive des candidats pour une formation en sport au Maroc et en Algérie
Alem, Jaouad; Dadouchi; Kerfes, Nabil et al

Poster (2009, June)

A l’instar de certains chercheurs en sciences de l’éducation qui ont tenté de démontrer l’existence d’un facteur unique d’intelligence générale G, certains kinésiologues ont, eux aussi, longtemps cru en ... [more ▼]

A l’instar de certains chercheurs en sciences de l’éducation qui ont tenté de démontrer l’existence d’un facteur unique d’intelligence générale G, certains kinésiologues ont, eux aussi, longtemps cru en l’existence d’un facteur unique d’aptitude physique générale sportive (Thomas, 1989). Cette recherche analyse la validité de construit des épreuves physiques censées mesurer l’aptitude physique générale des candidats pour une formation supérieure en sport au Maroc (7 épreuves) et en Algérie (4 épreuves). La base de données est composée de 990 candidats masculins du Maroc et 491 de l’Algérie, âgés en moyenne de 20 ans. Les analyses factorielles en composantes principales avec rotation varimax des performances à ces épreuves aussi bien selon le genre des candidats que selon leur spécialité sportive révèlent systématiquement une solution factorielle en deux composantes qui se distinguent selon la durée du travail pour produire de l’énergie et qui prédisent plus de 50% de la variance du construit mesuré. La 1ière composante correspond à la puissance musculaire phosphagénique ou encore à la capacité de produire en moins de sept secondes du phosphate déjà présent dans les muscles, elle est définie par les autres épreuves physiques. La 2ième composante correspond à la puissance musculaire glycolytique ou encore à la capacité de produire du lactate en plus de 12 secondes, elle est définie par la course de vitesse et la course de résistance. Nos analyses n’ont pas démontré la validité de construit de 7 ou 4 dimensions différentes d’aptitude physique sportive mais plutôt l’existence de deux composantes différentes de la puissance musculaire. [less ▲]

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See detailDes techniques pour saisir les usages des parcours de formation
Faulx, Daniel ULg; Petit, Lucie; Leclercq, Gilles

in CD Rom : 2ème colloque international francophone sur les méthodes qualitatives, Enjeux et Stratégies (2009, June)

Cette contribution regroupe trois contributions liées entre elles et visant un même objectif : mettre au point des techniques d’enquête capables de répondre à cette question : comment les usagers d’un ... [more ▼]

Cette contribution regroupe trois contributions liées entre elles et visant un même objectif : mettre au point des techniques d’enquête capables de répondre à cette question : comment les usagers d’un dispositif de formation s’en servent-ils ? Ces trois techniques sont en cours de stabilisation. Elles prennent appui sur des cadres de références éprouvés méthodologiquement, épistémologiquement et axiologiquement. Les expérimentations et les résultats produits portent sur des « dispositifs de formation professionnalisés », régis par le monde académique (universitaire dans notre cas) dans lesquels l’exercice simultané d’une activité professionnelle (ou tout au moins quasi-professionnelle) est requis. En préalable, nous avons posé quelques jalons concernant l’expression « dispositif ». Nous développons notamment l’idée selon laquelle la conception d’un dispositif se poursuit dans l’usage. [less ▲]

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See detailMaturation of toxins in the venom duct of conustextile
Dobson, Rowan ULg; Collodoro, Mike; Gilles, Nicolas et al

Poster (2009, June)

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See detailOPTIMAL ELECTRODES SETTING FOR TRANSCUTANEOUS ELECTRICAL STIMULATION OF THE QUADRICEPS
Vanderthommen, Marc ULg; Troka, Sylvie; Demoulin, Christophe ULg

in Loland, S.; Fasting, K.; Ommundsen, Y. (Eds.) et al Book of Abstracts of 14th annual Congress of the European College of Sport Science (2009, June)

Introduction Treatment or training sessions with neuromuscular electrical stimulations (NMES) are generally performed in a transcutaneous manner with the aid of surface electrodes. Several investigators ... [more ▼]

Introduction Treatment or training sessions with neuromuscular electrical stimulations (NMES) are generally performed in a transcutaneous manner with the aid of surface electrodes. Several investigators have highlighted the benefits of quadriceps stimulation during rehabilitation following traumatic injury or surgery of the knee and during physical preparation of athletes (Kramer and Mendryyk, 1982). However, the practical modalities of quadriceps stimulation (number, size and localization of electrodes) remain controversial (Vanderthommen and Duchateau, 2007). The present work aimed to determine the optimal electrodes setting for NMES applied to the quadriceps. Methods Twenty physically active men (23 ± 2 years, 180 ± 8 cm, 75 ± 12 Kg) underwent first an evaluation of left quadriceps maximal isometric voluntary torque (QMIVT). The exact localization of the motor points of vastus medialis (MPVM) and vastus lateralis (MPVL) was also determined. Then, we tested unilaterally, isometrically and consecutively five electrodes settings (ES) including rectangular (10 x 5 cm) (RE) or square (5 x 5 cm) (SE) electrodes, with identical stimulation parameters (biphasic symmetric rectangular pulses, 80 Hz, pulse duration 0.35 ms, constant current intensity (42 ± 11 mA)): ES1= 1 channel, 2 RE transversally on the thigh (with the distal electrode placed on MPVM and MPVL); ES2= 1 channel, 2 RE longitudinally on MPVM and MPVL; ES3= 1 channel, 2 SE on MPVM and MPVL; ES4= 2 channels, 4 SE (with 2 SE placed on MPVM and MPVL); ES5= 2 channels, channel 1= 1 SE on MPVM and 1 RE transversally on the proximal part of the thigh, channel 2= 1 SE on MPVL and 1 RE transversally on the proximal part of the thigh. For each ES we measured the electrostimulated torque. Results The mean QMIVT reached 200 ± 51 Nm. The MPVM and MPVL were situated 10 ± 2 cm and 14 ± 3 from the patellar base, respectively. The stimulated contractions reached 9.2 ± 7.4 Nm (4.6% of QMIVT) for ES1, 8 ± 4.8 Nm (4% of QMIVT) for ES2, 15 ± 8.3 Nm (7.5% of QMIVT) for ES3, 16.3 ± 7.7 Nm (8.2% of QMIVT) for ES4 and 40.4 ± 11.3 Nm (20.2% of QMIVT) for ES5 (p<0.05). Discussion During NMES programs it appears crucial to use a proper electrode setting ensuring efficient muscle recruitment and therefore optimized training effects. However, physiotherapists and trainers often place electrodes empirically especially for NMES applied to the quadriceps. This study demonstrated the relevance of using two channels for quadriceps NMES and of setting, for each channel, one small “excitative” electrode exactly on the motor point of vastus medialis or lateralis and one bigger “dispersive” electrode transversally on the proximal part of the thigh (in order to close the circuit). References Kramer JF, Mendryyk SW. (1982). Phys Ther, 4, 1657-1667. Vanderthommen M, Duchateau J. (2007). Exerc Sport Sci Rev, 35, 180-185. [less ▲]

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See detailHow good are we at extracting personal information from voices?
Dehon, Hedwige ULg; Lambert, Florence

Poster (2009, June)

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See detailAbnormal neural filtering of irrelevant information in depressed patients.
Desseilles, Martin ULg; Muselle, A.; Devue, Christel ULg et al

Poster (2009, June)

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See detailTxXIIIA, an atypical homodimeric conotoxin found in the Conus textilevenom
Quinton, Loïc ULg; Gilles, Nicolas; De Pauw, Edwin ULg

Poster (2009, June)

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See detailA Sparse Estimation Approach to Fault Isolation
Borguet, Sébastien ULg; Léonard, Olivier ULg

in Proceedings of the ASME Turbo Expo 2009 (2009, June)

Least-squares-based methods are very popular in the jet engine community for health monitoring purpose. In most practical situations, the number of health parameters exceeds the number of measurements ... [more ▼]

Least-squares-based methods are very popular in the jet engine community for health monitoring purpose. In most practical situations, the number of health parameters exceeds the number of measurements, making the estimation problem underdetermined. To address this issue, regularisation adds a penalty term on the deviations of the health parameters. Generally, this term imposes a quadratic penalisation on these deviations. A side-effect of this technique is a relatively poor isolation capability. The latter feature can be improved by recognizing that abrupt faults impact at most one or two component(s) simultaneously. This translates mathematically into the search for a sparse solution. The present contribution reports the development of a fault isolation tool favouring sparse solutions. It is very efficiently implemented in the form of a quadratic program. As a validation procedure, the resulting algorithm is applied to a variety of fault conditions simulated with a generic commercial turbofan model. [less ▲]

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See detailPredictors and correlates of changes in residents' burnout level: Influence of person- and work-related variables
Bragard, Isabelle ULg; Etienne, Anne-Marie ULg; Libert, Yves et al

in Psycho-oncology (2009, June), 18 (Suppl. 2)

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See detailFirst-Principles Study of Phase Transitions in Silicon Nitride at High Pressure
Xu, Bin ULg; Dong, Jianjun; Shebanova, Olga et al

Poster (2009, June)

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See detailMALDI-Top-Down of Proteins: Overview and Applications
Quinton, Loïc ULg; Demeure, Kevin ULg; Resemann, Anja et al

Conference (2009, June)

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See detailMarginal bone resorption and marginal bone level around implants in the posterior mandible: A 4-year retrospective study.
LAMBERT, France ULg; Geron, Caroline; LECLOUX, Geoffrey ULg et al

Poster (2009, June)

Long-term bone remodelling of implant placed in the posterior mandibule: a radiological study. France Lambert, Kim Vincent, Caroline Geron, Geoffrey Lecloux, Eric Rompen. Purpose: The aim of this study ... [more ▼]

Long-term bone remodelling of implant placed in the posterior mandibule: a radiological study. France Lambert, Kim Vincent, Caroline Geron, Geoffrey Lecloux, Eric Rompen. Purpose: The aim of this study was to analyse direct and long-term (4 years) marginal bone remodelling of various implant systems placed in the posterior mandibule with a single stage approach. Materials and methods: 50 partially edentulous patients received a total of 114 implants in the posterior mandibule (TE implant, Straumann®, Switzerland; Replace® Select Straight, Nobel Biocare, Sweden; Branemark System® MKIV, Nobel Biocare, Sweden). All implants were non-submerged, and loaded 8 to 12 weeks post surgery. X-rays were taken at baseline, 6 weeks, after loading and at long-term. Using a image processing program (Image J), bone losses were measured at each time point. Bone levels were also recorded using the first thread as reference point. Results: The mean bone loss reached 0.506±0.498 mm at 6 weeks, 0.798±0.599 after loading and 1.037±0.799 after 4 years. Bone losses were significatively higher on smokers and on patients displaying signs of bruxism. No statistical difference was found between the different implant types. Conclusion: 50% of the bone loss had already occurred within the 6 weeks post surgery with all implant types. Higher bone losses were often associated to risk factors such as tabacco addiction and bruxism. [less ▲]

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See detailSymptom attribution and radiation thérapy for breast cancer : changes over time and associated psychological factors
Bonamis, O.; Liénard, A.; Coucke, Philippe ULg et al

in Psycho-oncology (2009, June), 18 (Suppl. 2)

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See detailCommunication skills training: A study of residents' psychosocial and physiological variables which facilitate or inhibit the learning of assessment skills
Hasoppe, Jennifer; Merckaert, Isabelle; Libert, Yves et al

in Psycho-oncology (2009, June)

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See detailThe timed 100-meter walk test: an easy-t-use, sensitive tool to detect and evaluate restricted walking capacities in multiple sclerosis.
Belachew, Shibeshih ULg; CALAY, Philippe ULg; DELVAUX, Valérie ULg et al

Conference (2009, June)

Objectives: The primary aim of this study was to develop a quantitative ambulation test that correlates with the maximal walking distance in multiple sclerosis (MS) patients. Background: The timed 25-foot ... [more ▼]

Objectives: The primary aim of this study was to develop a quantitative ambulation test that correlates with the maximal walking distance in multiple sclerosis (MS) patients. Background: The timed 25-foot walk (T25FW) weakly correlates with overall walking capacities of MS patients. We developed the timed 100-meter walk test (T100T), which besides reflecting speed may be more sensitive to other walking parameters such as gait and spasticity-related fatigue. Methods: In the T100T, the patient is instructed to walk as fast as possible on a distance of 100 meters. Eighty-eight MS patients with an EDSS score from 0 to 5.5 and 60 normal controls performed the T100T and the T25FW. In addition, 30 normal controls and 30 patients performed the tests twice. Results: T25FW (R2= 0.79) and T100T (R2 = 0.89) correlated with the nonlinear distribution of EDSS scores. The correlation between T100T and T25FW values was high (r2 = 0.81) for the low (0 to 3.0) and high (3.5-5.5) scores of EDSS. The intra-class correlations were excellent and similar for both tests. The range of T100T values in MS patients (40.4 to 114.7 seconds) was 10-fold wider than that of the T25FW (3.0 to 9.1 seconds). The univariate distribution analyses demonstrated that abnormal T100T values appear to be more sensitive than T25FW to predict walking limitations. Finally, the correlation with the reported and/or actual maximal walking distance without aid and rest was significantly better for T100T. Conclusions : The T100T proves to be superior to the T25FW in terms of discriminatory power for the detection and evaluation of restricted walking capacities in MS. The T100T should be of interest for clinical trials studying disability worsening and improvement across the spectrum of EDSS. It may provide more sensitive measure for ambulation change in quantifying progressive MS pathology. [less ▲]

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See detailEvidence for distinct roles for basal ganglia and SMA in automatic and unconscious inhibition of voluntary actions
D'Ostilio, Kevin ULg; Garraux, Gaëtan ULg

Poster (2009, June)

Introduction: Although previous research highlighted the importance of automatic and unconscious inhibition in motor control, the neural correlates of such processes remain unclear. Basal ganglia ... [more ▼]

Introduction: Although previous research highlighted the importance of automatic and unconscious inhibition in motor control, the neural correlates of such processes remain unclear. Basal ganglia dysfunctions have long been associated with impairment in automatic motor control. In addition, Sumner & al. (2007) suggested a key role of the medial frontal cortex by administrating a masked priming task (e.g., Eimer & Schlaghecken 2003) to a patient with a small lesion restricted to the supplementary motor area (SMA)., Here, we used fMRI in normal subjects to better delineate the respective roles of SMA and basal ganglia in automatic and unconscious motor inhibition. Methods: We used event-related BOLD fMRI at 3T to record brain activity in 26 healthy volunteers (22 ± 2 years) as they performed the subliminal masked priming task. In this visuomotor task, participants are asked to make speeded button presses with the left or right hand following leftward or rightward pointing arrows, which are preceded by masked prime arrows. Here, two experimental variables were manipulated: the interval between the mask and the target (SOA: 0,100,150,200 or 250 ms) and the prime/target direction (compatible or incompatible). Imaging data processing and analysis were performed using SPM8b. Results: using Repeated Measures ANOVA of behavioral data (global interaction SOA*compatibility, p<0.0000001), we replicated the masked priming effects showing faster reaction times (i.e., motor response facilitation) in compatible than incompatible trials at 0-SOA (positive compatibility effect: diff = 21 ms, linear contrast : p<0.0000001) and the reverse (negative compatibility effect) at 100 (diff = -12 ms, p= 0.01) and 150-SOA (diff= -12 ms, p= 0.008) suggesting motor response inhibition. At 200 & 250 SOA, we no longer found significant compatibility effects (p>0.05) By applying a similar statistical model to imaging data, we observed a stronger activity in the in several regions, the SMA (p<0.001, uncorrected), caudate (p=0.002, uncorrected) and thalamus (p<0.001, uncorrected) showing stronger activity in compatible than incompatible trials at 100 and 150-SOA, as compared with 0-SOA. Moreover, the differential activity in the SMA was correlated with the negative compatibility effect (p= 0.01). When testing for a main effect of SOAs we didn’t find a differential activation of the SMA, but a stronger deactivation of the caudate (p=0.009, uncorrected) and the thalamus (p=0.007, uncorrected) at 100-150 SOA (inhibition conditions) compared to 0-SOA (facilitation condition). In a prime identification task administered after the fMRI experiment, subjects’ performance was at chance levels for primes displayed for 17 ms as in the main study, suggesting that the prime was not consciously perceived. Conclusions: These new findings suggest that automatic and unconscious inhibition of an activated motor response is mediated by the basal ganglia whereas medial frontal regions seem to be more implicated in the control of response conflict related to inhibition. [less ▲]

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See detailIdentification of biomarkers to estrogen exposure using MCF-7/BOS cell line exposed to 17β-estradiol and phytoestrogens
Collodoro, Mike ULg; Bertrand, Virginie ULg; Lemaire, Pascale ULg et al

Poster (2009, June)

Use of an estrogen responsive cell line and proteomic for biomarker discovery and the screening of xenoestrogen

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See detailTheoretical Study of Transformation Mechanism for the Corundum-to-Rh2O3(II) Transition in Al2O3
Xu, Bin ULg; Dong, Jianjun; Stokes, Harold et al

Conference (2009, June)

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See detailGreen Roofs in Cairo: A Holistic Approach for Healthy Productive Cities
Attia, Shady ULg; Mahmoud, A.

in Proceedings of 7th Annual Greening Rooftops for Sustainable Communities (2009, June)

In Cairo, the amount of green space per inhabitant is roughly equivalent to 0.33 square meters per person (3.5 square feet), one of the lowest proportions in the world. Green roofs are presented in this ... [more ▼]

In Cairo, the amount of green space per inhabitant is roughly equivalent to 0.33 square meters per person (3.5 square feet), one of the lowest proportions in the world. Green roofs are presented in this study mainly as an urban landscape for healthy and productive cities. This paper describes the idea of green roofs as platform for urban faming that is considered as a holistic approach to solve environmental, spatial, social and economic problems in large cities in the developing countries. The first part of the study, presents the theoretical framework for roof farming. Potentials and problems of green roofs are analyzed and mapped in a multilayered method. The goal is to find out what the maximum potentials of productive green rooftops and determine the best techniques for maintaining them. As a result, the research presents a set of design principles, guidelines and tools that can assist in transforming existing roofs into productive roof farms. The second part of the study examines successful case studies in Cairo, including schools and residential units and introduces a broader function of roof gardens, as well as the barriers for successful implementation. The final result, point to the importance of considering green roofs as creative development opportunity for urban open spaces, responsive support for bio and food security, in addition to the climatic, environmental and aesthetical benefits. Finally, the paper presents the more interesting results and explains why this approach is successful and how the results can be extended to other cities. [less ▲]

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See detailPreparation and application of permeabilized muscle fibers for respiration studies
Votion, Dominique ULg; Pesta, Dominik; Gnaiger, Erich et al

in In Proceedings: 3rd MiPsummer School (2009, June)

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See detailShort-term temperature impacts on soil respiration.
Buysse, Pauline ULg; Goffin, Stéphanie ULg; Carnol, Monique ULg et al

Poster (2009, June)

Despite considerable recent work on soil heterotrophic respiration, a mechanistic understanding of this process is still missing. Temperature is one of the most important driving factors. It can influence ... [more ▼]

Despite considerable recent work on soil heterotrophic respiration, a mechanistic understanding of this process is still missing. Temperature is one of the most important driving factors. It can influence the mechanism through multiple ways, whose importance may vary with time. An incubation experiment is set up to study short-term temperature influences on soil microbial respiration and its evolution through time. Soil samples are taken in spring from the surface layer (0-25cm) of a bare agricultural loamy soil situated in Lonzée in Belgium (Hesbaye region) and are homogenized before being placed into incubators at three different temperatures, namely 5, 15 and 25°C. Temperature is regulated by Peltier systems that warm up or cool down a sand bath containing jars with soil samples. Once a week, incubation temperatures are increased and decreased by 5°C-steps, starting from each incubator temperature, to achieve a one-day temperature cycle between 5 and 35°C. CO2 flux measurements are performed at each temperature step by a closed dynamic chamber system, after the temperature has stabilized in the samples. Microbial biomass (C and N) is determined four times during the temperature cycle by the fumigation-extraction technique and soil labile carbon is measured at the beginning of each cycle by the hot-water extraction method. Moisture levels in soil samples are regularly checked and adjusted to keep optimal soil moisture content. Between CO2 flux measurements, jars are left open to ensure that anaerobic conditions do not occur. Further investigations could include an assessment of the importance of substrate availability and depletion on microbial activity, and a model development related to the results provided by this experiment. [less ▲]

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See detailThe efficacy of a communication skills training program on successive sequences of breaking bad news simulated consultation : A randomized controlled study
Gibon, A.-S.; Merckaert, I.; Libert, Y. et al

in Psycho-oncology (2009, June), 18 (Suppl. 2)

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See detailImmunopathogenesis of canine sino-nasal aspergillosis
Peeters, Dominique ULg

in Proceedings of the 2009 ACVIM Forum (2009, June)

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See detailNatalizumab induced freedom from disease activity after failure to previous therapy in relapsing remitting multiple sclerosis.
Belachew, Shibeshih ULg; Bartholome E.; DELVAUX, Valérie ULg et al

Conference (2009, June)

Objectives: To analyze the efficacy of natalizumab after switching relapsing-remitting multiple sclerosis (RRMS) patients from other disease modifying treaments (DMTs). Background: Natalizumab (Tysabri ... [more ▼]

Objectives: To analyze the efficacy of natalizumab after switching relapsing-remitting multiple sclerosis (RRMS) patients from other disease modifying treaments (DMTs). Background: Natalizumab (Tysabri) is a monoclonal antibody directed against VLA4 that was recently approved for the treatment of RRMS. Due to safety concerns, the use should be restricted to highly active patients and/or patients with insufficient response to other DMTs. The pivotal trials were not designed to examine the effect of natalizumab as an escalation monotherapy. Methods: Prospective, open label, observational study. All patients initiating natalizumab had experienced at least 1 relapse in the previous year under DMTs and had at least 1 Gd-enhancing lesion on their brain MRI. Previous treatment with interferon-beta (IFN-beta) or glatiramer acetate (GA) were stopped at least one week and azathioprine or mitoxantrone at least 3 months before switching. The minimum therapy duration with natalizumab was 6 months for all patients. 21 RRMS patients were included in this analysis. The mean age of the patients was 25,5 yo with mean disease duration of 6,8 years. All patients were under IFN-beta (17) or GA (4) during at least the previous year before starting natalizumab therapy. Four patients had also received azathioprine and 1 patient mitoxantrone. Results: The mean relapse rate in the previous year was 2.15 (1-4), the mean EDSS at baseline was 3.3 (1,0-6.0), the mean number of Gd+ lesions at baseline 2,58 (1-6). Under tysabri treatment the annualized relapse rate dropped to 0,20. Eleven patients improved their EDSS (0,5 to 1,5 steps down), others remained stable at 6 months. The mean number of Gd+ T1 lesions dropped to 0,23 and the mean number of new T2 lesions was 0.25 on the control MRI at 6 months. 55% of patients were free from disease activity, i.e. had no relapses, no EDSS progression, no new T2 lesion and no Gd+ T1 lesions after 6 months of Tysabri. 5 patients experienced minor adverse events (1 zona, 2 flu-like symptoms, 1 gastroenteritis, 1 allergic reaction). Conclusion: Natalizumab was well tolerated and safe as escalation therapy when previous DMTs had failed to control disease progression in this group of highly active RRMS patients. These results suggest comparable efficacy to the phase III AFFIRM trial of natalizumab when the drug is used in a context of breakthrough disease. Although data from preliminary analyses are promising, long term investigations are warranted. [less ▲]

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See detailDesigning the Malqaf for summer cooling in low-rise housing an experimental study
Attia, Shady ULg; De Herde, André

in Proceedings of Passive and Low Energy Architecture (PLEA) 2009 (2009, June)

The malqaf or windcatcher is Egyptian vernacular archetypal device that traps the wind into the building. For centuries, the malqaf has been used as a viable solution to ensure natural ventilation ... [more ▼]

The malqaf or windcatcher is Egyptian vernacular archetypal device that traps the wind into the building. For centuries, the malqaf has been used as a viable solution to ensure natural ventilation. However, for the last 50 years, Egyptian practice has failed in combining traditional architectural devices into new techniques that could lead to sustainable and energy aware buildings. In Egypt, more than half of the urban peak load of energy consumption in the mean time is used to satisfy air conditioning demands alone. Therefore, the objective of the research is to develop a viable passive alternative to active cooling by exploring the potentials and design parameters of windcatchers as solution for passive cooling and natural ventilation during the summer season for low-rise housing. Experimental wind tunnel and smoke visualisation testing were conducted to compare the air flow in a scale model room with and without windcatcher on top of the roof with different orientations. The final result shows that the performance of the windcatcher depends greatly on the position, orientation and size of the inlet and outlet opening in relation to the wall ratio. The study developed a comparative matrix for examined parameters to support architects with the basic principles for windcatchers design. [less ▲]

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See detailFuture CCD and CSH variations: Deep-sea impact of ocean acidification
Munhoven, Guy ULg

Poster (2009, June)

The evolutions of atmospheric CO2 partial pressure (pCO2) and of the carbonate compensation depth and the calcite and aragonite saturation horizons (CSH and ASH, respectively) have been studied with the ... [more ▼]

The evolutions of atmospheric CO2 partial pressure (pCO2) and of the carbonate compensation depth and the calcite and aragonite saturation horizons (CSH and ASH, respectively) have been studied with the coupled oceansediment model MBM-MEDUSA [1], over the next 50,000 years. MBM-MEDUSA includes a full description of sedimentary exchange processes, taking into account chemical carbonate erosion in a consistent way. The adopted emission scenarios were based upon logistic functions [2], considering total emissions of 500, 1000, 2000 and 4240 GtC); the adopted stabilisation scenarios were the S350, S450, S550, S650 and S750 from the IPCC [3]. While the evolutions of atmospheric pCO2 and pH have got a great deal of attention so far (e.g., [4, 5]), only a few studies have considered the saturation horizons [5, 6], and, to our best knowledge, this is the first study also focusing on compensation depth variations. Simulation experiments were started with a 50,000 year spin-up to 1750 A.D. (at steady state). This state was characterised by an atmospheric pCO2 of 277 ppm, a CSH depth of 3350 m and a CCD of 4300 m (in the Indo-Pacific, which can be considered the most representative reservoir for the global ocean). In all experiments, we found that CCD variations were considerably greater than CSH variations. The 500 GtC emission scenario yielded CSH and CCD maximum shoalings of 450 and 800 m, respectively, in the year 3400 A.D. about; with the 4240 GtC emission scenario, both CSH and CCD became shallower than 500 m in 2650 A.D. With the highly optimistic S350 stabilisation scenario, CSH and CCD become even shallower than with the 500 GtC emission scenario (650 m and 1000 m shoaling, respectively), although in the year 5000 A.D. only. For the close-to-CO2-doubling scenario S550, CSH and CCD shoaled by about 1950 and 2450 m (to depths of 1400 and 1900 m, respectively). As a result, most of the sea-floor environment bathed in water that was highly corrosive to carbonate material. In the S650 and S750 scenarios experiments, the CCD becomes shallower than 500 m, leaving little space for benthic carbonate producers to survive. [1] Munhoven (2007) Deep-Sea Res. II 54, 722-746. [2] Bacastow and Dewey (1996) Energy Convers. Mgmt. 37, 1079-1086. [3] IPCC (1994) Climate Change 1994, Cambridge University Press. [4] Caldeira and Wickett (2003) Nature 425, 325-325. [5] Orr et al. (2005) Nature 437, 681-686. [6] Cao and Caldeira (2008) Geophys. Res. Lett. 35, L19609. [less ▲]

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See detailWhich variables are related to residents' ability to detect patients' distress
Meunier, J.; Libert, Y.; Merckaert, I. et al

in Psycho-oncology (2009, June), 18 (Suppl. 2)

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See detail“ARCHITECT FRIENDLY”: A COMPARISON OF TEN DIFFERENT BUILDING PERFORMANCE SIMULATION TOOLS
Attia, Shady ULg; Beltrán, Liliana; De Herde, André et al

in Proceedings of 11th International Building Performance Simulation Association Conference and Exhibition (2009, June)

A wide range of scientifically validated Building Performance Simulation tools BPS is available internationally. The users of those tools are mainly researchers, physicists and experts who value empirical ... [more ▼]

A wide range of scientifically validated Building Performance Simulation tools BPS is available internationally. The users of those tools are mainly researchers, physicists and experts who value empirical validation, analytical verification and calibration of uncertainty as defined by e.g. BESTEST. However, literature and comparative surveys indicate that most architects who use BPS tools in design practice are much more concerned with the (1) Usability and Information Management (UIM) of interface and (2) the Integration of Intelligent design Knowledge-Base (IIKB). Those two issues are the main factors for identifying a building simulation program as “Architect Friendly”. Now, with the advancement of BPS tools and the recent announcements of direct links between BIM or non-BIM modeling tools and BPS tools it is important to compare the existing programs. Based on an online survey, this paper presents the results of comparing ten major BPS tools. The following programs are compared: ECOTECT, HEED, Energy 10, Design Builder, eQUEST, DOE-2, Green Building Studio, IES VE, Energy Plus and Energy Plus-SketchUp Plugin (OpenStudio). With 249 valid responses, the survey ranked the tools in three classes and revealed that architects seek the IIKB above the UIM of the interface. Finally, the paper summarizes the key findings and underlines the major requirements for future improvement and development of BPS tools, mainly from an architectural perspective. [less ▲]

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See detailUse of Borg Scale in Patients with Chronic Low Back Pain Attending a Physical Training
Verbunt, Jeanine; Demoulin, Christophe ULg; Winkens, Bjorn et al

in Abstract book of the Boston International Forum X - Primary Care Research on low back pain (2009, June)

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See detailAnalyse comparée de la formation des éducateurs sportifs en Algérie et en Communauté française de Belgique
Kerfes, Nabil; Boudaoud, Abdelyamine; Alem, Jaouad et al

Poster (2009, June)

Toute formation supérieure a ses principes et ses particularités visant à développer des compétences en relation avec les finalités professionnelles disponibles. La formation des éducateurs sportifs est l ... [more ▼]

Toute formation supérieure a ses principes et ses particularités visant à développer des compétences en relation avec les finalités professionnelles disponibles. La formation des éducateurs sportifs est l'une des préoccupation majeurs de toutes les sociétés cherchant le progrès et le développement, il existe de nombreuses raisons pour lesquelles les nouveaux étudiants choisissent leur avenir universitaire ou professionnel, ils abordent l'enseignement supérieur avec des dispositions diverses à l'égard du contenu de la formation et des professions sur lesquelles elle débouche. Ce travail se situe dans le champ de l’éducation comparée. Il propose une lecture compréhensive de deux systèmes de formation dans un esprit d’ouverture et d’élargissement des connaissances. En nous inspirant de deux études effectuées dans le domaine de la formation des éducateurs physiques dans des contextes culturels très différents (Groupe de recherche de MJS, 1983, pour l’Algérie – Groupe de recherche interuniversitaire, 2003, pour la Belgique francophone). L’objectif de cette recherche a dès lors consisté à déterminer les motifs qui incitent les étudiants à s'inscrirent aux études de diverses formations sportives, qu’ils soient universitaires ou non. Notre recherche s’est basée, d’une part, sur l’analyse des textes officiels relatifs à l’organisation des études supérieures dans le domaine sportif et, d’autre part, sur des données collectées auprès des acteurs impliqués dans quatre institutions de formation, deux de la région d’Alger et deux de la région liégeoise. Il convient de retenir que, dans chaque contexte culturel, une institution universitaire et une non universitaire ont été analysées. Nos résultats portent ainsi sur un échantillon total de 290 sujets (40 membres des staffs pédagogiques, 108 étudiants et 142 diplômés). Les formateurs ont été interviewés tandis que les sujets des deux autres groupes ont répondu à des questionnaires. La version arabe de chaque instrument a été traduite à partir des outils en français. Un expert en a assuré le contrôle de validité. Dans cet article, nous porterons notre attention sur l’analyse des réponses fournies par les trois types d’acteurs à deux questions fermées consistant à identifier le degré d’importance accordé par les sujets à des motifs d'inscription aux études en éducation physique et sportive, par l’intermédiaire d’échelles de Lickert à quatre niveaux. Les réponses ont été encodées dans une base de données informatique et traitées au moyen du logiciel Statistica (Stat Soft, 2006). Aucune différence significative n’est enregistrée dans la comparaison des réponses des sujets interrogés. Nous constatons toutefois que, d'une part, l'amour du sport et la volonté de pratiquer du sport sont parmi les plus importants des motifs de suivre cette formation, et d'autre part, dans les deux institutions belges, une importance plus grande est donnée à l'entraînement sportif, le contexte culturel ne semble pas non plus beaucoup influencer les avis des sujets interrogés. [less ▲]

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See detailPost-training improvements in residents breaking bad news are related to an Upregulation of their physiological Arousal
Meunier, J.; Libert, Y.; Merckaert, I. et al

in Psycho-oncology (2009, June), 18 (Suppl. 2)

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See detailObjets Rebondissants Non Investigues
Dorbolo, Stéphane ULg; Terwagne, Denis ULg

Conference (2009, June)

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See detailQuantifying hand cross contamination in food.
Rodrigues, Ana; Dure, Rémi ULg; Delhalle, Laurent ULg et al

Poster (2009, June)

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See detailImpact and potential of community scale low-energy retrofit: case study in Cairo
Attia, Shady ULg; De Herde, André

in Proceedings of the 3rd CIB International Conference on Smart and Sustainable Built Environment (2009, June)

There are extraordinary opportunities to reduce the consumption of fossil energy as a result of retrofitting the existing buildings in Egypt. For instance, Cairo falls in the arid climate zone with an ... [more ▼]

There are extraordinary opportunities to reduce the consumption of fossil energy as a result of retrofitting the existing buildings in Egypt. For instance, Cairo falls in the arid climate zone with an annual total radiation above 2409 bankable kWh/m2 per annum with approximately 3300 hours of full sunshine. However, the poorly insulated fabric of most buildings shows relatively high demand for cooling and heating energy. To overcome this problem and to examine these opportunities, this study evaluates the retrofit of a middle-income urban residential case in Cairo. The aim of the study is to investigate the potential and impact of retrofits on two different scales. The first is on the building scale, intending to reach a low-energy performance. The second is on a community scale, intending to increase the dependence on renewable sources. The case study employed TRNSYS to evaluate the performance and energy/carbon emissions savings. The research took in consideration passive and active design strategies such as envelope retrofit, internal loads reduction, and natural ventilation; in addition to domestic water heating, photovoltaic panels and solar thermal air conditioning. The results were evaluated to assess the suitability of each strategy based on energy performance. The final result of this study shows the feasibility of improving the envelope performance and installing solar hot water collectors and solar thermal air conditioning. The low-energy retrofit for old residential buildings leads to significant savings in energy consumption when applied on community scale rather than building scale. However, it is urgent to set energy conservation and code-enforced retrofit measures to start a national retrofit process. [less ▲]

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See detailStructure cordale, phonotraumatisme et lésions cordales
FINCK, Camille ULg

Conference (2009, June)

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See detailBioclimatic landscape design strategy: Bioclimatic-zone Concept for site planning in arid climates
Attia, Shady ULg

in Proceedings of the 3rd CIB International Conference on Smart and Sustainable Built Environment (2009, June)

One of the primary objectives of landscape architecture in hot areas is to improve the micro-climate passively by modifying the extremes of particular environmental conditions through increasing or ... [more ▼]

One of the primary objectives of landscape architecture in hot areas is to improve the micro-climate passively by modifying the extremes of particular environmental conditions through increasing or decreasing the effect of prevailing conditions. In hot arid climates, we wish to make the outdoor environment cooler, breezier and more humid. This happens through planting vegetation as different design elements, e.g. shelterbelts, wind barriers, wind filter or water elements. This paper attempts to endorse the Bioclimatic-Zones Concept, as a passive landscape design strategy for site planning, in hot arid climates. In essence, we are attempting to create bioclimatic zones. Each zone should specifically fulfill certain desired climatic improvements through a group of design decisions. This happens through the intensive or extensive use of plants materials and water elements. Helwan University Campus was employed as a case study to assess and verify this design strategy. Some methodologies such as field measurements and computer simulations (ENVI-MET) were employed. This paper presents the more interesting result and explains why this concept was successful and how the Bioclimatic-Zones Concept improved the micro-climate. [less ▲]

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See detailprésentation des travaux de recherche en lutte biologique
Jijakli, Haissam ULg

Conference (2009, June)

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See detailFading of Modern Prussian Blue Pigments : Preliminary Study
Samain, Louise ULg; Sougrati, Moulay T.; Hatert, Frédéric ULg et al

Poster (2009, June)

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See detailThe clinical and economic burden of nonadherence with oral bisphosphonates in osteoporotic patients
Hiligsmann, Mickaël ULg; Rabenda, Véronique ULg; Reginster, Jean-Yves ULg

in Annals of the Rheumatic Diseases (2009, June), 68(S3), 667

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