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See detailUn obstacle épistémologique comme trait d'union des travaux d'un laboratoire de didactique des mathématiques
Schneider-Gilot, Marguerite ULg

in Actes du séminaire national de didactique des mathématiques (2012)

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See detailDiabète et Ramadan : représentations et pratiques de santé des patients et des soignants et intérêts de l'éducation thérapeutique du patient
Smaoui, N; Böhme, P; Collin, JF et al

in Diabètes & Métabolism (2012), 38(2), 47-48

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See detailIsoform 111 of vascular endothelial growth factor (VEGF111) improves angiogenesis of ovarian tissue xenotransplantation
Labied, Soraya ULg; Delforge, Yves ULg; Blacher, Silvia ULg et al

in Journal of Assisted Reproduction & Genetics (2012), 28(11), 1009

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See detailLong-term series of tropospheric water vapour amounts and HDO/H2O ratio profiles above Jungfraujoch
Lejeune, Bernard ULg; Mahieu, Emmanuel ULg; Schneider, Matthias et al

in Geophysical Research Abstracts (2012), 14

Water vapour is a crucial climate variable involved in many processes which widely determine the energy budget of our planet. In particular, water vapour is the dominant greenhouse gas in the Earth’s ... [more ▼]

Water vapour is a crucial climate variable involved in many processes which widely determine the energy budget of our planet. In particular, water vapour is the dominant greenhouse gas in the Earth’s atmosphere and its radiative forcing is maximum in the middle and upper troposphere. Because of the extremely high variability of water vapour concentration in time and space, it is challenging for the available relevant measurement techniques to provide a consistent data set useful for trend analyses and climate studies. Schneider et al. (2006a) showed that ground-based Fourier Transform Infrared (FTIR) spectroscopy, performed from mountain observatories, allows for the detection of H2O variabilities up to the tropopause. Furthermore, the FTIR measurements allow the retrieval of HDO amounts and therefore the monitoring of HDO/H2O ratio profiles whose variations act as markers for the source and history of the atmospheric water vapour. In the framework of the MUSICA European project (Multi-platform remote Sensing of Isotopologues for investigating the Cycle of Atmospheric water, http://www.imk-asf.kit.edu/english/musica.php), a new approach has been developed and optimized by M. Schneider and F. Hase, using the PROFFIT algorithm, to consistently retrieve tropospheric water vapour profiles from high-resolution ground-based infrared solar spectra and so taking benefit from available long-term data sets of ground-based observations. The retrieval of the water isotopologues is performed on a logarithmic scale from 14 micro-windows located in the 2600-3100 cm-1 region. Other important features of this new retrieval strategy are: a speed dependant Voigt line shape model, a joint temperature profile retrieval and an interspecies constraint for the HDO/H2O profiles. In this contribution, we will combine the quality of the MUSICA strategy and of our observations, which are recorded on a regular basis with FTIR spectrometers, under clear-sky conditions, at the NDACC site (Network for the Detection of Atmospheric Composition Change, http://www.ndacc.org) of the Jungfraujoch International Scientific Station (Swiss Alps, 46.5°N, 8.0°E, 3580m asl). Information content analysis of the retrieved H2O products allows us to produce a long-term trend from 1996 to 2011 for different tropospheric levels. We will compare the annual cycle of tropospheric HDO/H2O ratio profiles with those already produced at other sites (Schneider et al., 2010). We will also focus on the diurnal variability of water vapour to determine a time limit in the inter-comparison of different water vapour measurement techniques. [less ▲]

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See detailBiomechanical Rupture Risk Assessment in Patients with Abdominal Aortic Aneurysms: Introducing Rupture Risk Equivalent Diameter.
Roy, J; Swedenborg, J; SakalihasanN, Natzi ULg et al

in Arteriosclerosis, Thrombosis, and Vascular Biology (2012), 32(A103),

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See detailRunoff inundation hazard cartography
Pineux, Nathalie ULg; Degré, Aurore ULg

in Geophysical Research Abstracts (2012), 14

Between 1998 and 2004, Europe suffered from more than hundred major inundations, responsible for some 700 deaths, for the moving of about half a million of people and the economic losses of at least 25 ... [more ▼]

Between 1998 and 2004, Europe suffered from more than hundred major inundations, responsible for some 700 deaths, for the moving of about half a million of people and the economic losses of at least 25 billions Euros covered by the insurance policies. Within this context, EU launched the 2007/60/CE directive. The inundations are natural phenomenon. They cannot be avoided. Nevertheless this directive permits to better evaluate the risks and to coordinate the management measures taken at member states level. In most countries, inundation maps only include rivers’ overflowing. In Wallonia, overland flows and mudflows also cause huge damages, and must be included in the flood hazard map. Indeed, the cleaning operations for a village can lead to an estimated cost of 11 000 C˙ Average construction cost of retention dams to control off-site damage caused by floods and muddy flows was valued at 380 000C and yearly dredging costs associated with these retention ponds at 15 000C˙ For a small city for which a study was done in a more specific way (Gembloux), the mean annual cost for the damages that can generate the runoff is about 20 000C˙ This cost consists of the physical damages caused to the real estate and movable properties of the residents as well as the emergency operations of the firemen and the city. On top of damages to public infrastructure (clogging of trenches, silting up of retention ponds) and to private property by muddy flows, runoff generates a significant loss of arable land. Yet, the soil resource is not an unlimited commodity. Moreover, sediments’ transfer to watercourses alters their physical and chemical quality. And that is not to mention the increased psychological stress for people. But to map overland flood and mud flow hazard is a real challenge. This poster will present the methodology used to in Wallonia. The methodology is based on 3 project rainfalls: 25, 50 and 100 years return period (consistency with the cartography of the overflowing hazard map), with a rain duration set at 1h. The arable lands are considered as bare, except for the permanent meadows. The worst situation is envisaged, the hydrologic effect of the soil cover in the farming area being variable from a year to another according to the vegetative development and to the cultural operations. The peak discharge is chosen as the more critic parameter because it synthesizes the watershed propensity to stream, its size, and its flow network. The cartographic representation is done in a linear way along the concentrated runoff axes. Whereas this first approach at regional scale includes uncertainties, the aim of this map is currently to prompt consideration of the runoff inundation hazard during the design of urban development projects. [less ▲]

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See detailEffect of raingage density, position and interpolation on rainfall-discharge modelling
Ly, Sarann ULg; Sohier, Catherine ULg; Charles, Catherine ULg et al

in Geophysical Research Abstracts (2012), 14(EGU2012), 2592

Precipitation traditionally observed using raingages or weather stations, is one of the main parameters that has direct impact on runoff production. This pPrecipitation data requires a preliminary spatial ... [more ▼]

Precipitation traditionally observed using raingages or weather stations, is one of the main parameters that has direct impact on runoff production. This pPrecipitation data requires a preliminary spatial interpolation prior to hydrological modeling. The accuracy of modelling result is determined bydepends on the accuracy of the interpolated spatial rainfall which differs according to different interpolation methods. The accuracy of the interpolated spatial rainfall is usually determined by cross-validation method. The objective of this study is to assess the different interpolation methods of daily rainfall at the watershed scale through hydrological modelling and to explore the best methods that provides a good long term simulation. Four versions of geostatistics: Ordinary Kriging (ORK), Universal Kriging (UNK), Kriging with External Dridft (KED) and Ordinary Cokriging (OCK) and two types of deterministic methods: Thiessen polygon (THI) and Inverse Distance Weighting (IDW) are used to produce 30-year daily rainfall inputs for a distributed physically-based hydrological model (EPIC-GRID). This work is conducted in the Ourthe and Ambleve nested catchments, located in the Ardennes hilly landscape in the Walloon region, Belgium. The total catchment area is 2908 km², lies between 67 and 693 m in elevation. The multivariate geostatistics (KED and OCK) are also used by incorporating elevation as external data to improve the rainfall prediction. This work also aims at analysing the effect of different raingage densities and position used for interpolation, on the stream flow modelled to get insight in terms of the capability and limitation of the geostatistical methods. The number of raingage varies from 70, 60, 50, 40, 30, 20, 8 to 4 stations located in and surrounding the catchment area. In the latter case, we try to use different positions: around the catchment and only a part of the catchment. The result shows that the simple method like THI fails to capture the rainfall and to produce good flow simulation when using 4 raingages. The KED and UNK are comparable to other methods for a raingage case that in which stations are located around the catchment area, especially in the high elevation catchment but the worst methods for other raingage position cases where the rainfall stations are located only at a part and mostly outside of the catchment area. However, three methods (IDW, ORK and OCK) can overcome this problem since they are more robust and can provide good performance of simulation in all raingage densities. When using 70, 60, 50, 40, 30, 20, 8 raingages in the catchment area (2908 km²), no substantial differences in model performance are observed. [less ▲]

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See detailImproving physical education teachers’ action with overweight students
Cloes, Marc ULg

in Revista Motricidade (2012), 8(S1), 3-4

Nowadays, overweight is one of the most important plagues and many authors believe that the fast increase of this phenomenon during the last decades can be considered as a global epidemic. School has been ... [more ▼]

Nowadays, overweight is one of the most important plagues and many authors believe that the fast increase of this phenomenon during the last decades can be considered as a global epidemic. School has been identified as one of the pillars of the necessary multisectorial approach that must be implemented to fight against this ineworable trend. ... [less ▲]

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See detailCFD-gestütztes Design von Drehscheibenextraktoren
Aksamija, E; Weinländer, C; Pfennig, Andreas ULg et al

in Chemie Ingenieur Technik (2012), 84(8), 1262

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See detailMagnetic properties of nanosized MgFe2O4 powders prepared by auto-combustion
Ghelev, Ch; Koutzarova, T.; Kolev, S. et al

in Journal of Physics: Conference Series (2012), 356(1), 012048

Targets were prepared to be used for magnetron sputtering and laser ablation and their microstructural and magnetic properties were investigated. The base material was nanosized MgFe2O4 powder produced by ... [more ▼]

Targets were prepared to be used for magnetron sputtering and laser ablation and their microstructural and magnetic properties were investigated. The base material was nanosized MgFe2O4 powder produced by citrate auto-combustion synthesis. The auto-combusted powders were annealed at temperatures in the range 600 - 1000°C in air to study the effect of temperature on thofe formation MgFe2O4. The saturation magnetization Ms was 24.30 emu/g at room temperature. © Published under licence by IOP Publishing Ltd. [less ▲]

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See detailImpact of noise correction on diffusion kurtosis estimation
André, Elodie ULg; Balteau, Evelyne ULg; Phillips, Christophe ULg et al

in Proceedings of the International Society for Magnetic Resonance in Medicine ... Scientific Meeting and Exhibition. International Society For Magnetic Resonance in Medicine. Scientific Meeting and Exhibition (2012), 20

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See detailLa contribution du Centre européen d'archéométrie (ULg) à la base de données internationale "Digital collaboratory for cultural-historiocal dendrochronology in the Low Countries (DCCD)
Hoffsummer, Patrick ULg; Lambert, Georges-Noël

in Archeologia Mediaevalis, archéologie du Moyen Âge et des Temps modernes dans les trois régions belges et les pays limitrophes (2012), 35

This paper is a description of the dendrochronological metadata data of University of Liège we can consult on the International Digital collaboratory for Cultural-historical Dendrochronology in the Low ... [more ▼]

This paper is a description of the dendrochronological metadata data of University of Liège we can consult on the International Digital collaboratory for Cultural-historical Dendrochronology in the Low-Countries (DCCD, on line). It also mention the process used to realise this project with the help of a new software "Dendron IV". [less ▲]

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See detailOptimizing nutrition after birth with a unique standardized parenteral nutrition solution may reduce electrolytes anomalies in <1250g infants
SENTERRE, Thibault ULg; rigo, jacques

in Archives of Disease in Childhood (2012), 97(S2), 394

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See detailDoes delay release the verbal overshadowing effect in child and adult eyewitnesses?
Vanootighem, Valentine ULg; Brédart, Serge ULg; Dehon, Hedwige ULg

in Perception (2012), 41(supplement), 194

The verbal overshadowing effect (VO) (eg, Schooler and Engstler-Schooler, 1990 Cognitive Psychology 22(1) 36–71) suggests that the fact of generating a verbal description of a previously seen face may ... [more ▼]

The verbal overshadowing effect (VO) (eg, Schooler and Engstler-Schooler, 1990 Cognitive Psychology 22(1) 36–71) suggests that the fact of generating a verbal description of a previously seen face may impair subsequent performance on a lineup identification task in adults. Previous research has examined whether descriptions also impaired children’s identification abilities but no evidence of VO was found (Memon and Rose, 2002 Psychology, Crime and Law 8(3), 229–242). However, the method might not have been appropriate to observe this effect as, for instance, a 24-hour delay between the description and the identification tasks (associated with a release of the VO effect in adults) was used. Hence, in this current experiment, groups of children (7–8, 10–11, 13–14 years old) and adults were presented with a short video and then assigned to a description or a no description condition before the identification task. Participants were also assigned either to a “no delay”, a “24-hour post encoding delay” or a “24-hour post description delay” condition to determine the influence of delay on the VO effect. Results indicated that, compared to the control condition, the description decreased correct identification performance in both children and adults and no release of VO was found with delay. [less ▲]

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See detailEcologie des tritons au Pays de Herve: influence des habitats à plusieurs échelles
Denoël, Mathieu ULg; Perez, Amélie; Ficetola, G. Francesco

in Echo des Rainettes (2012), 10

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See detailNucleon-to-Pion Transition Distribution Amplitudes and Backward Electroproduction of Pions.
Pire, Bernard; Semenov-Tyan-Shanskiy, Kirill ULg; Szymanowski, Lech

in PoS - Proceedings of Science (2012), QNP2012

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See detailMeasurement of PCB-153 and DDE in 20 μL dried-blood spots
L'Homme, Benjamin ULg; Focant, Jean-François ULg

in Organohalogen Compounds (2012), 74

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See detailSeeking for the optimum retrieval strategy of methanol (CH3OH) from ground-based high-resolution FTIR solar observations recorded at the high-altitude Jungfraujoch station (46.5ºN)
Mahieu, Emmanuel ULg; Bader, Whitney ULg; Lejeune, Bernard ULg et al

in Geophysical Research Abstracts (2012), 14

Methanol (CH3OH) is a key organic compound in the Earth’s troposphere, with reported concentrations of the order of a few ppbv. It is indeed the second most abundant organic atmospheric compound after ... [more ▼]

Methanol (CH3OH) is a key organic compound in the Earth’s troposphere, with reported concentrations of the order of a few ppbv. It is indeed the second most abundant organic atmospheric compound after methane (Jacob et al., 2005). The same authors have estimated its lifetime to a few days. Natural sources of CH3OH include plant growth, oceans, decomposition of plant matter, oxidation of methane,. . . They are complemented by anthropogenic (from vehicles, industry) and biomass burning emissions. Oxidation by the hydroxyl radical is the main sink, leading to the formation of carbon monoxide (CO) and formaldehyde (H2CO) (Rinsland et al., 2009; Stavrakou et al., 2011, and references therein). The first retrievals of methanol from ground-based Fourier Transform Infrared (FTIR) spectra have been reported by Rinsland et al. (2009), using spectra recorded at Kitt Peak (31.9ºN) and a microwindow extending from 992 to 999 cm-1. Soon after, Stavrakou et al. (2011) used another spectral interval from 1029 to 1037 cm-1, for methanol retrievals at Reunion Island (21ºS). In both cases, lines of the strong nu8 band of CH3OH were adjusted, accounting for interferences by several isotopologues of ozone and by water vapor. In this contribution, we will present first retrievals of CH3OH from observations recorded at the high-altitude station of the Jungfraujoch (46.5ºN, 8ºE, 3580 m asl), with a Bruker 120HR spectrometer, in the framework of the Network for the Detection of Atmospheric Composition Change (NDACC, visit http://www.ndacc.org). We will implement existing retrieval approaches –and possibly additional one(s)– to determine which strategy is the most appropriate for our dry high-altitude site. If successful, a long-term CH3OH total column time series will be produced using the Jungfraujoch observational database, and we will perform preliminary investigations to characterize the seasonal and inter-annual variations of this species at northern mid-latitudes. [less ▲]

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See detailHydrological behavior of a forested catena
Deraedt, Deborah ULg; Ridremont, François ULg; Claessens, Hugues ULg et al

in Geophysical Research Abstracts (2012), 14

At the time when the significance of water becomes more than obvious, we realize the utility of models that describe hydrological phenomena and that permit the optimization of water management. The soil ... [more ▼]

At the time when the significance of water becomes more than obvious, we realize the utility of models that describe hydrological phenomena and that permit the optimization of water management. The soil properties, as they have an influence both on hydrology and on plant development, are an element really essential in this type of model. But, as for tree characteristics, these properties are spatially and temporally variable. Therefore this research will specially focus on the case of forested slopes. The study will be divided into three parts. The first will characterize the vertical and the horizontal heterogeneity of the structural and hydrodynamic properties of soil. To do this, in addition to the analysis of the soil sampled along the slope, moisture sensors will be installed on different places on a slope and on different depths. For the greatest part it will be capacitive sensors whose values will be confirmed by TDR sensors. Each sensor will be inserted to cover the largest pedological and topographic variability. The second part of the study will permit to characterize the water flux repartition into the horizons down the slope. We will therefore apply a dye to surface on the top of the slope. The bottom of the slope will be equipped with an experimental system which collects water for each soil layer. The third parts will deal with the forest stand heterogeneity along the slope. We will measure characteristics such as tree height, roots repartition, stem circumference and also for different periods of the year, leaf area index (LAI). At the end of the research, we will measure tree rings for a dendrochronolocical study. The collected data will be analyzed to determine the slope effects on the soil properties, on the water flux distribution into the soil layer and on the tree characteristics. Afterwards the relations and the interactions can be conceptualized and introduced into a physical hydrological model. The studied slope is located on the Houille watershed in the West of the Belgian Ardenne. The site is situated under a Douglas fir cover (Pseudotsuga menziesii (MIRB.) FRANCO). It is about 170 meters long with an average slope of 25%. There are only few studies that attempt to connect physical models and the tree growth at the slope scale, leaving a vast untapped investigation area in the hydrological modelling. The study of this variability would afford possibility to improve hydrological models. From the point of view of the climate change, such a model would e.g. determine the best adapted species to each forest site. [less ▲]

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See detailA closed form solution of the two body problem in non-inertial reference frames
Condurache, Daniel; Martinusi, Vladimir ULg

in Advances in the Astronautical Sciences (2012), 143

A comprehensive analysis, together with the derivation of a closed form solution to the two-body problem in arbitrary non-inertial reference frames are made within the present work. By using an efficient ... [more ▼]

A comprehensive analysis, together with the derivation of a closed form solution to the two-body problem in arbitrary non-inertial reference frames are made within the present work. By using an efficient mathematical instrument, which is closely related to the attitude kinematics methods, the motion in the non-inertial reference frame is completely solved. The closed form solutions for the motion in the non-inertial frame, the motion of the mass center, and the relative motion are presented in the paper. Dynamical characteristics analogue to the linear momentum, angular momentum and total energy are introduced. In the general situation, these quantities may be determined as functions of time, and their derivation is presented within the paper. In the situation where the non-inertial frame has only a rotation motion, these quantities become first integrals in a larger sense, with respect to an adequately defined differentiation rule. [less ▲]

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See detailThe diagnostic value of equine rectal and duodenal biopsies.
Tossens, Morgane; Borde, Laura ULg; Amory, Hélène ULg et al

in Journal of Veterinary Internal Medicine (2012), 26(2), 430-431

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See detailThe elusiveness of multifragmentation footprints in 1-GeV proton-nucleus reactions
Mancusi, D; Boudard, A; Cugnon, Joseph ULg et al

in EPJ Web of Conferences (2012), 31

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See detailThinking about Ikhtilâf (“Difference”): The Political Construction of Difference in Islamic Context
Nachi, Mohamed ULg

in History of the Present (2012), 2(1/Spring), 52-70

A partir de l'idée d'Ikhtilâf (différence/divergence), fondamentale dans la culture et les sociétés islamiques, cette étude cherche àapporter des réponses nouvelles à la question de la légitimation des ... [more ▼]

A partir de l'idée d'Ikhtilâf (différence/divergence), fondamentale dans la culture et les sociétés islamiques, cette étude cherche àapporter des réponses nouvelles à la question de la légitimation des différences politique, religieuse, culturelle, etc. et, au-delà, de la légitimation du pouvoir et de la souverainté politique dans des sociétés islamiques en mutation. [less ▲]

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See detailEfficacy and safety of strontium ranelate in the treatment of knee osteoarthritis : a randomized, double-blind, placebo-controlled international trial
Cooper, C; Chapurlat, R; Christiansen, C et al

in Annals of the Rheumatic Diseases (2012), 71(3), 693

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See detailWissensbasierte Designmethode zur Auslegung von Feststoffextraktoren auf Basis von Laborversuchen
Bol, J B; Pfennig, Andreas ULg

in Chemie Ingenieur Technik (2012), 84(8), 1349

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See detailVariability of insulin sensitivity during the first 4 days of critical illness
Pretty, Christopher ULg; Le Compte, A; Chase, JG et al

in Critical Care (2012), 16 (Suppl 1)

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See detailRecycling von Metallen aus Lithiumionenbatterien
Noll, H; Pfennig, Andreas ULg; Siebenhofer, M

in Chemie Ingenieur Technik (2012), 84(8), 1381

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See detailMeasurement of urinary Coll2-1NO2 is predictif of joint space narrowing in knee osteoarthritis
Henrotin, Yves ULg; Kraus, V; Brandt, K et al

in Osteoarthritis and Cartilage (2012), 20(Suppl 1), 80

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See detailLes grottes d'Azé (Saône-et-Loire, France): de la roche altérée aux sédiments
Barriquand, Lionel; Barriquand, Johan; Baele, Jean-Marc et al

in Karstologia (2012), 59

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See detailNominal group technique to prioritize preferences for medication attributes from the patients’ perspective : the case of osteoporosis
Hiligsmann, Mickaël ULg; Van Durme, C; Geusens, P et al

in Annals of the Rheumatic Diseases (2012), 71(3), 597

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See detailRapamycin Prevents Experimental Sclerodermatous Chronic Graft-versus-Host Disease in mice
Belle, Ludovic ULg; Binsfeld, Marilène ULg; DUBOIS, Sophie ULg et al

in Belgian Journal of Hematology (2012), Abstracts book(Supplement of 27th General Meeting of the Belgian Hematological Society), 14

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See detailInfluence of the shielding currents lengthscale and anisotropy effects on the magnetic flux profiles of high-temperature superconductors
Vanderbemden, Philippe ULg; Lovchinov, Vassil

in Journal of Physics: Conference Series (2012), 398

The so-called "magnetic flux profile" AC inductive technique is a powerful method for determining the critical current density Jc of bulk superconductors. In this work we aim at reporting analytical ... [more ▼]

The so-called "magnetic flux profile" AC inductive technique is a powerful method for determining the critical current density Jc of bulk superconductors. In this work we aim at reporting analytical expressions for magnetic flux profiles of superconducting rectangular samples exhibiting a critical current density anisotropy. The results are used for examining the error resulting from approximating a rectangular cross-section by an "infinite cylinder" or "infinite slab" geometry. It is found that such approximations can lead to an artificial curvature of the flux profiles and errors of 10%–20% in the determination of Jc. Next, the effects of how planar defects (cracks, platelet boundaries,...) affect the magnetic flux profile signal are discussed. It is found that the magnetic flux profiles are much sensitive to the lengthscale of shielding currents, thereby providing means of investigation of the typical size of induced current loops in bulk superconductors. Finally some illustrative flux profile data measured on a bulk, large grain melt-processed YBCO single domain exhibiting Jc anisotropy are presented and discussed in relation with theoretical predictions. [less ▲]

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See detailAsphalt concrete with fly ashes of different sources as filler replacement
Stroeven, Piet; He, Huan ULg; Huu Hanh, Pham

in Key Engineering Materials [=KEM] (2012), 517

Paper presents and discusses data obtained in a testing program on the replacement of limestone powder in asphalt concretes by fly ashes. This would combine economic, environmental and technical benefits ... [more ▼]

Paper presents and discusses data obtained in a testing program on the replacement of limestone powder in asphalt concretes by fly ashes. This would combine economic, environmental and technical benefits. The finest fly ash of Vietnamese origin scored best. This is proposed due to the gap-graded design of the particulate mixture of coarse crushed rock fractions, fine fluvial sand and the mineral admixture. The test program encompassed Marshall tests, creep tests and splitting tensile tests. [less ▲]

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See detailPilot Trial of STAR in Medical ICU
Fisk, LM; Le Compte, A; Shaw, GM et al

in Critical Care (2012), 16 (Suppl 1)

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See detailDo all negative images similarly retain attention? Time course of attentional disengagement from disgust- and fear-evoking stimuli.
Devue, Christel ULg; Van Hooff, Johanna; Vieweg, Paula et al

in Perception (2012), 41(ECVP abstract suppl.), 133

While disgust and fear are both negative emotions, they are characterized by different physiology and action tendencies, which might in turn lead to different attentional biases. However, the potential ... [more ▼]

While disgust and fear are both negative emotions, they are characterized by different physiology and action tendencies, which might in turn lead to different attentional biases. However, the potential disgusting aspect of threatening stimuli has somehow been neglected which might contribute to discrepancies in the literature. The goal of this study was to examine whether fear- and disgust-evoking images produce different attentional disengagement patterns. We pre-selected IAPS images according to their disgusting, frightening, or neutral character and presented them as central cues while participants had to identify a target letter briefly appearing around them. To investigate the time course of disengagement from those central images, we used 4 different cue-target intervals (200, 500, 800 and 1100 ms). Reaction times were significantly longer with the disgust-evoking images than with neutral- and fear-evoking images at the 200 ms interval only. This suggests that only disgust- and not fear-related images hold participants'attention for longer. This might be related to the need to perform a more comprehensive risk-assessment of disgust-evoking pictures. These results have important implications for future emotion-attention research as they indicate that a more careful selection of stimulus materials that goes beyond the dimensions of valence and arousal is needed. [less ▲]

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See detailItem familiarity and controlled associative retrieval in Alzheimer’s disease: An fMRI study.
Genon, Sarah ULg; Collette, Fabienne ULg; Feyers, Dorothée ULg et al

in Frontiers in Human Neuroscience (2012)

Alzheimer’s disease (AD) is characterised by altered recollection function, with impaired controlled retrieval of associations. In contrast, familiarity-based memory for individual items may sometimes be ... [more ▼]

Alzheimer’s disease (AD) is characterised by altered recollection function, with impaired controlled retrieval of associations. In contrast, familiarity-based memory for individual items may sometimes be preserved in the early stages of the disease. This is the first study that directly examines whole brain regional activity during one core aspect of the recollection function: associative controlled episodic retrieval (CER), contrasted to item familiarity in AD patients. Cerebral activity related to associative CER and item familiarity in AD patients and healthy controls (HC) was measured with functional magnetic resonance imaging during a word-pair recognition task to which the process dissociation procedure was applied. Some patients had null CER estimates (AD–), whereas others did show some CER abilities (AD+), although significantly less than HC. In contrast, familiarity estimates were equivalent in the three groups. In AD+, as in controls, associative CER activated the inferior precuneus/posterior cingulate cortex (PCC). However, during associative CER, functional connection between this region and the hippocampus, the inferior parietal and dorsolateral prefrontal cortex (DLPFC) was significantly higher in HC than in AD+. In all three groups, item familiarity was related to activation along the intraparietal sulcus (IPS). In conclusion, whereas the preserved automatic detection of an old item (without retrieval of accurate word association) is related to parietal activation centred on the IPS, the inferior precuneus/PCC supports associative CER ability in AD patients, as in HC. However, AD patients have deficient functional connectivity during associative CER, suggesting that the residual recollection function in these patients might be impoverished by the lack of some recollection-related aspects such as autonoetic quality, episodic details and verification. [less ▲]

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See detailQuelles sont les caractéristiques des médicaments les plus importantes pour les patients ostéoporotiques ? Résultats d'une étude qualitative
Hiligsmann, Mickaël ULg; Van Durme, C; Geusens, P et al

in Revue du Rhumatisme (2012), 79(S1), 238

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See detailEffet structuro-modulateur du ranélate de strontium dans la gonarthrose : l'étude SEKOIA
Chevalier, X; Chapurlat, R; Cooper, C et al

in Revue du Rhumatisme (2012), 79(S1), 271

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See detailAssociation entre l'hypertrophie du chondrocyte et l'angiogenèse du cartilage dans l'arthrose
Pesesse, Laurence ULg; Sanchez, Christelle ULg; Delcour, Jean-Pierre et al

in Revue du Rhumatisme (2012), 79(S), 105-106

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See detailCompression test for metal characterization using digital image correlation and inverse modeling
Tuninetti Vásquez, Victor ULg; Gilles, Gaëtan ULg; Péron-Lührs, Vincent ULg et al

in Procedia IUTAM (2012)

In the case of sheet metal characterization, compression tests at normal direction of the sheet can be done by means of the layer compression test. Circular cylinder specimens are commonly used for ... [more ▼]

In the case of sheet metal characterization, compression tests at normal direction of the sheet can be done by means of the layer compression test. Circular cylinder specimens are commonly used for compression test but the complicated layer alignment is time consuming and may induce a wrong anisotropy characterization. This final goal explains the interest of working on elliptic shape. In this article, an elliptical cylinder specimen is proposed and tested for bulk Titanium alloy. Full-field optical technique (3D Digital Image Correlation) is used for displacement measurements by means of three camera systems (Limess), which allows out-of-plane displacement/strain fields on around 300° of the specimen. The use of this technique easily provides accurate barreling profile used to compute Coulomb friction coefficient by using inverse method. [less ▲]

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See detailAntioxidant and anti-inflammatory like properties of benzoic acid analogs on the oxidant response of neutrophils: structure/redox potential relationship study.
Franck, Thierry ULg; Mouithys-Mickalad, Ange ULg; Robert, Thierry ULg et al

in Free Radical Biology & Medicine (2012), 53(supplement 1),

We investigated the antioxidant capacity of phenolic acid derivatives by measuring their capacity to prevent ABTS oxidation and evaluating their anti-inflammatory like-properties on the oxidant response ... [more ▼]

We investigated the antioxidant capacity of phenolic acid derivatives by measuring their capacity to prevent ABTS oxidation and evaluating their anti-inflammatory like-properties on the oxidant response of neutrophils, especially on superoxide anion production and the activity of myeloperoxidase (MPO), an oxidant enzyme present and released by the primary granules of neutrophils. The superoxide anion production by PMA-stimulated neutrophils was measured by lucigenin-enhanced chimiluminescence (CL) and the activity of MPO by SIEFED to study the potential interaction of a molecule with the enzyme without interferences due to medium. The antioxidant and anti-inflammatory activities of the phenolic compounds were correlated to their redox potentials measured by voltammetry method, and discussed in relation to their molecular structure. The ability of the phenolic molecules to decrease ABTS oxidation and CL production was inversely correlated to their redox potential increasing as follows: propyl gallate > gallic acid > caffeic acid > 3,4-dihydroxybenzoic acid > ferulic acid > syringic acid > 2,6-dihydroxybenzoic acid > salicylic acid > benzoic acid. The number of hydroxyl groups (3) and their position (catechol) were essential for the efficacy of the molecules as stoichiometric antioxidants or scavengers. On MPO activity, the inhibitory capacity of the molecules was not really correlated with their redox potential and increased as follows: gallic acid > caffeic acid > 2,6-dihydroxybenzoic acid > propyl gallate > ferulic acid = syringic acid > 3,4-dihydroxybenzoic acid = salicylic acid > benzoic acid. The number of OH groups and the elongation of the carboxyl group were essential for the inhibition of MPO activity, probably by facilitating the interaction with the MPO active site or structure. The redox potential measurement seems to be a good technique to select stoichiometric antioxidants, but not anti-catalytic ones. [less ▲]

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See detailDiffusion of Ag dimer on Cu (110) by dissociation-reassociation and concerted jump processes
Sbiaai, K.; Boughaleb, Y.; Raty, Jean-Yves ULg et al

in International Conference on Transparent Optical Networks (2012)

In this work we investigate the diffusion of Ag dimer on Cu(110) surface by molecular dynamics simulation based on semi-empirical many-body potentials derived from the embedded atom method. The ... [more ▼]

In this work we investigate the diffusion of Ag dimer on Cu(110) surface by molecular dynamics simulation based on semi-empirical many-body potentials derived from the embedded atom method. The dissociation-reassociation process is predicted to be dominant in static regime and this is confirmed by the dynamic investigation. A good agreement is found between static activation barrier and dynamic potential barrier. © 2012 IEEE. [less ▲]

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See detailComputer-Aided Tissue Engineering of the Anterior Cruciate Ligament
Laurent, Cédric ULg

in Journal of Biomechanics (2012)

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See detailModellierung von Ersatztreibstoffen mit Realkomponenten
Mair-Zelenka, P; Wallek, T; Reiter, A et al

in Chemie Ingenieur Technik (2012), 84(8), 1392

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See detailLa bone sialoproteine: un facteur clé dans la pathogénie de l'arthrose
Pesesse, Laurence ULg; Sanchez, Christelle ULg; Delcour, Jean-Pierre et al

in Revue du Rhumatisme (2012), 79(S), 106

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See detailDo you sound or look as old as you are? A study of age estimation in young and older adults
Moyse, Evelyne ULg; Beaufort, Aline ULg; Brédart, Serge ULg

in Perception (2012), 41(supplement), 117

Studies on age estimation usually indicated that people are fairly accurate at estimating the age of a person from her/his face or from her/his voice (with an absolute difference of five and ten years ... [more ▼]

Studies on age estimation usually indicated that people are fairly accurate at estimating the age of a person from her/his face or from her/his voice (with an absolute difference of five and ten years respectively) [e.g. Amilon et al., 2000, in: Speaker Classification II. Lectures Notes in Artificial Intelligence, C Müller, Berlin, Springer-Verlag]. However studies showed also that performance depends on the age of participants and the age of stimuli [Rhodes, 2009, Applied Cognitive Psychology, 23, 1-12; Braun, 1996, Forensic Linguistics, 3, 65-73]. The aim of the present study is to compare age estimation performance from faces and voices by using an experimental design in which the age of participants (young vs older), the age of stimuli (young vs older) and the stimulus domain (face vs voice) were crossed. Overall, the age of faces was more accurately estimated than the age of voices. Moreover performance of age estimation was better for young stimuli than for older stimuli. Finally, young participants made smaller absolute errors than older participants. However there is no difference between young and older participants when estimating the age of older stimuli. [less ▲]

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See detailParathyroid hormone but not bisphosphonate therapy interferes with the local mechanoregulatory mechanism in trabecular bone
Schulte, F. A.; Weigt, C.; Ruffoni, Davide ULg et al

in BONE (2012), 50(1), 40-40

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See detailEstimation of genetic parameters for birth weight, pre-weaning mortality and hot carcass weight in a crossbred population of pigs
Dufrasne, Marie ULg; Misztal, Ignacy; Tsuruta, Shogo et al

in Journal of Animal Science (2012), 90(E-Suppl.3), 721

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See detailEffects of environmental factors on yield and milking number in dairy cows milked by an automatic system located in pasture
Dufrasne, Isabelle ULg; Robaye, Vincent ULg; Knapp, Emilie ULg et al

in Grassland Science (2012), 17

A herd of 45 Holstein dairy cows was milked with an automatic milking system (AMS) located on a permanent pasture. The cows grazed from 22.06.2010 until 20.10.2010 on a rotational system. They were ... [more ▼]

A herd of 45 Holstein dairy cows was milked with an automatic milking system (AMS) located on a permanent pasture. The cows grazed from 22.06.2010 until 20.10.2010 on a rotational system. They were fetched twice a day to the AMS but they could also reach it freely. The sward height was measured at the entry and exit of each paddock. Data about daily milk yield and milking number were analysed according to a GLM including the effect of animal, days in paddock, distance between AMS and paddock, rotation cycle number and complementation. [less ▲]

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See detailMemory impairments in dementia: Which memory and how does it fail?
Salmon, Eric ULg; Collette, Fabienne ULg; Genon, Sarah ULg et al

in Frontiers in Human Neuroscience (2012)

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See detailEtude de l'imprégnation d'une population générale belge en bisphénol A, triclosan et 4-nonylphénol
PIRARD, Catherine ULg; SAGOT, Clémence ULg; DEVILLE, Marine ULg et al

in Annales de Toxicologie Analytique (2012), 24(4),

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See detailMultiscale Computational Modeling of a New Scaffold for Anterior Cruciate Ligament Tissue Engineering
Laurent, Cédric ULg

in Computer Methods in Biomechanics & Biomedical Engineering (2012)

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See detailThe influence of cognitive reserve on inter-individual variability in resting-state cerebral metabolism in normal aging
Bastin, Christine ULg; Yakushev, Igor; Bahri, Mohamed Ali ULg et al

in Frontiers in Human Neuroscience (2012)

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See detailThe neural correlates of recollection and familiarity during aging
Angel, Lucie; Bastin, Christine ULg; Genon, Sarah ULg et al

in Frontiers in Human Neuroscience (2012)

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See detailAssessment of the risk of dermal exposure to pesticide during treatment with a back-pack sprayer in the presence and absence of vegetation
Kadri, Z.; Sylla, S.; Lebeau, Frédéric ULg et al

in Communications in Agricultural and Applied Biological Sciences (2012), 77(7), 415-422

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See detailEconomics in osteoporosis : how can we reconciliate the prescribers and the payer ?
Reginster, Jean-Yves ULg; Hiligsmann, Mickaël ULg

in Osteoporosis International (2012), 23(6), 655-661

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See detailThe influence of cognitive reserve on inter-individual variability in resting-state cerebral metabolism in normal aging
Bastin, Christine ULg; Salmon, Eric ULg; Bahri, Mohamed Ali ULg et al

in Alzheimer's & Dementia : The Journal of the Alzheimer's Association (2012), 8(4), 80-81

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See detailThe Strong Coupling Constant from Hadron Structure Phenomenology
Courtoy, Aurore ULg; Liuti, Simonetta

in International Journal of Modern Physics Conference Series (2012)

We present recent developments on the role of the running coupling constant at the intersection of perturbative and nonperturbative QCD. A number of experiments show a smooth transition from small to ... [more ▼]

We present recent developments on the role of the running coupling constant at the intersection of perturbative and nonperturbative QCD. A number of experiments show a smooth transition from small to large scales given by the four-momentum transfer in the reactions. This is at variance with perturbative QCD where the running coupling constant becomes infinite when the scale equals ΛQCD. Approaches using an effective coupling constant could help interpret the opposite trend of data as compared to standard perturbative QCD predictions. We give an overview of the role of the coupling constant in the procedure to match nonperturbative hadronic model to perturbative QCD and we propose an extraction of an effective coupling constant from inclusive electron proton scattering data at large Bjorken x. [less ▲]

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See detailRelationship between changes in bone mineral density and incidence of fracture with 6 years of Denosumab treatment
Bolognese, MA; Miller, PD; Reginster, Jean-Yves ULg et al

in Arthritis and Rheumatism (2012), 64(S10), 847

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See detailQuel(s) futur(s) pour la Forêt de Soignes ? Adéquation des essences à leurs stations face aux changements climatiques
Claessens, Hugues ULg

in Soignes - Bulletin trimestriel des Amis de la Forêt de Soignes (2012), (n° spécial), 80-85

Het Zoniënwoud straalt ongereptheid uit, heeft een respectabele ouderdom en staat op een moeilijke ondergrond : deze factoren geven de statige beukenkathedraal iets kwetsbaars. Het bos lijdt onder de wind ... [more ▼]

Het Zoniënwoud straalt ongereptheid uit, heeft een respectabele ouderdom en staat op een moeilijke ondergrond : deze factoren geven de statige beukenkathedraal iets kwetsbaars. Het bos lijdt onder de wind en is gevoelig voor hitte en droogte. Het evenwicht met zijn omgeving wordt hierdoor steeds wankeler en de bedreiging door de klimaatverandering gaat zwaarder wegen. Deze objectieve vaststelling kan verschillende reacties uitlokken : keuze voor een veel dynamischere bosbouw naargelang van de verjongingen, geleidelijke verrijking van het bos met soorten die beter gedijen in de toekomstige omstandigheden, zoals de wintereik, of evolutie naar een gemengd en ongelijkvormig hooghout dat beter bestand is tegen verstoring en dat het aanzicht van het Zoniënwoud drastisch zou wijzigen. De liefde voor de beukenkathedraal mag dan wel sterker zijn dan de rede, het is in elk geval nodig de aanplanting van beuken voor een tiental jaar op te schorten, minstens tot er meer zekerheid is over de wetenschappelijke voorspellingen. [less ▲]

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See detailTreatment of postmenopausal women with osteoporosis for six years with denosumab : three-year results from the freedom extension
Chapurlat, R; Papapoulos, S; Brown, JP et al

in Annals of the Rheumatic Diseases (2012), 71(3), 588

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See detailCorals of the Upper Viséan Microbial-Sponge-Bryozoan-Coral Bioherm of Kongul Yayla (Taurides, S Turkey), Palaeobiogeographic Relations
Denayer, Julien ULg

in Turkish Association of Petroleum Geologists, Special Publication (2012), 6

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See detailEffect of aerobic training on cardiorespiratory fitness, gait, quality of life and psychometric outcomes in Parkinson’s disease patients
Demonceau, Marie ULg; Rodriguez de la Cruz, Carlos; Robert, Fanny et al

in Movement Disorders : Official Journal of the Movement Disorder Society (2012), 27(Suppl. 1), 113

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See detailEffect of a fungal infection on the profile of volatile organic compounds emitted by plant roots
Fiers, Marie ULg; Lognay, Georges ULg; Wathelet, Jean-Paul ULg et al

in Communications in Agricultural and Applied Biological Sciences (2012), 77(3), 125-129

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See detailEffects of Strontium ranelate on knee osteoarthritis pain : a responder analysis
Reginster, Jean-Yves ULg; Chapurlat, R; Bellamy, N et al

in Arthritis and Rheumatism (2012), 64(S10), 110

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See detailLe ranélate de strontium diminue le nombre de progresseurs radiologiques ou radiocliniques chez les patients ayant une arthrose primaire du genou
Chevalier, X; Chapurlat, R; Cooper, C et al

in Revue du Rhumatisme (2012), 79(S1), 270

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See detailAdaptation of a Murine Chronic GVH Model to Study Graft versus Myeloma Effect after Allogeneic Transplantation
Binsfeld, Marilène ULg; Belle, Ludovic ULg; Hannon, Muriel ULg et al

in Belgian Journal of Hematology (2012), Abstracts book(Supplement of 27th General Meeting of the Belgian Hematological Society), 16

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See detailEvidence for Expansion of Host-derived CMV-specific CD8+ T cells after Allogeneic Transplantation with Non-Myeloablative Conditioning
MENTEN, Catherine ULg; Castermans, E.; Hannon, Muriel ULg et al

in Belgian Journal of Hematology (2012), Abstracts book(Supplement of 27th General Meeting of the Belgian Hematological Society), 16

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See detailConnectivity within the default mode network is related to working memory performance in young but not elderly healthy adults
Yakushev, Igor; Chételat, Gael; Fischer, Florian et al

in Alzheimer's & Dementia : The Journal of the Alzheimer's Association (2012), 8(4), 81

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See detailAppel au peuple/appel du public : décrire la réception comme une adresse
Servais, Christine ULg

in Questions de Communication (2012)

Par rapport à d'autres productions culturelles ou scientifiques, la particularité des médias de masse est qu'ils font quelque chose au peuple en faisant quelque chose du peuple, c'est-à-dire en le ... [more ▼]

Par rapport à d'autres productions culturelles ou scientifiques, la particularité des médias de masse est qu'ils font quelque chose au peuple en faisant quelque chose du peuple, c'est-à-dire en le représentant à lui-même. La construction mass-médiatique du "peuple" a donc une dimension pragmatique que les études de réception doivent intégrer. C'est à quoi s'attache cette communication, notamment à travers la notion d'adresse, issue du travail de J. Derrida, et celle de "partage du sensible" formalisée par Jacques Rancière. [less ▲]

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See detailUniversal functions in the study of the relative orbital dynamics
Condurache, Daniel; Martinusi, Vladimir ULg

in Advances in the Astronautical Sciences (2012), 145

The closed-form solution to the problem of the relative motion in gravitational fields is expressed with the help of the universal functions. The full nonlinear model of the relative motion is considered ... [more ▼]

The closed-form solution to the problem of the relative motion in gravitational fields is expressed with the help of the universal functions. The full nonlinear model of the relative motion is considered, and no linearization or approximation assumptions are made. The results are free of singularities and they hold for any reference and targeted orbits, as well as for any time scale. A unified way to propagate the relative orbit with respect to time is introduced, by making use of the solution to a generalized Kepler equation. [less ▲]

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See detailChemical control of Haplodiplosis marginata (Diptera: Cecidomyiidae)
Censier, Florence ULg; Chavalle, Sandrine; Wittouck, Daniël et al

in Communications in Agricultural and Applied Biological Sciences (2012), 77(4), 667-675

The saddle gall midge, Haplodiplosis marginata (von Roser), has been detected in Belgium since 2010, after several decades without any reporting. It had indeed caused serious damages between 1965 and 1970 ... [more ▼]

The saddle gall midge, Haplodiplosis marginata (von Roser), has been detected in Belgium since 2010, after several decades without any reporting. It had indeed caused serious damages between 1965 and 1970. This insect is a European cereal pest whose larvae feed on stems and engender saddle-shaped depressions, resulting in yield losses. Face with the resurgence of this pest, it was decided to study its spatial distribution and, because serious damages were observed in some regions, to develop effective curative control. To date, chemical protection seems to be the only immediate solution in case of heavy emergences. Experimentation was conducted in a highly infested field (Meetkerke, Belgian Polders), according to a randomized complete blocks arrangement with four replications. Foremost, a lambdacyhalothrin-based insecticide was used to evaluate efficiency of several protection schemes, ranging between one and four spray(s). The large spread of flights observed during the 2011 spring allowed to highlight the effect of treatment date on the attack intensity and also on the galls distribution along the stem, on the different internodes: the lower internodes were protected by the early sprayings, while last sprayings induced reduction of galls number on the upper internodes. Moreover, several insecticides already registrated in cereals against aphids were compared for their efficacy against saddle gall midge. Studied pyrethroids have shown a very good efficacy, ranging between 75 % and 87 %, when applied twice with a 2 weeks interval. To be efficient, insecticide applications must thus be synchronized with the flights and egg-laying periods. Monitoring the phenology of flights is thus essential as part of integrated pest management against saddle gall midge. [less ▲]

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See detailComparison of Immune Reconstitution after Hematopoietic Stem Cell Transplantation with Flu-TBI versus TLI-ATG Conditioning
Hannon, Muriel ULg; Humblet-Baron, S.; Graux, C. et al

in Haematologica (2012), 97(Supplement 1), 180

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See detailA short introduction to spallation reactions
Cugnon, Joseph ULg

in Few-Body Systems (2012), 53(1-2), 142-152

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See detailStrontium ranelate in knee osteoarthritis trial (SEKOIA) : a structural and symptomatic efficacy
Reginster, Jean-Yves ULg; Chapurlat, R; Christiansen, C et al

in Arthritis and Rheumatism (2012), 64(S10), 681

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See detailUS-guided versus blind lumbar puncture in dogs - A post- mortem study.
Etienne, Anne-Laure ULg; Massart, Laurent; Busoni, Valeria ULg

in Veterinary Radiology & Ultrasound (2012)

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See detailFrom Food Crisis to Analytical Strategies
Focant, Jean-François ULg

in Organohalogen Compounds (2012), 74

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See detailLight impact on cognitive brain function depends on circadian phase, sleep pressure and PER3 polymorphism
Vandewalle, Gilles ULg

in Journal of Sleep Research (2012), 21(Suppl. 1),

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See detailIntelligence Naturelle et Intelligence Artificielle
Dubois, Daniel ULg

in Acta Europeana Systemica (2011, December 07), 1

This article presents a systemic approach to the concept of natural intelligence with the aim of creating an artificial intelligence. Thus, the natural intelligence, human and nonhuman animals, is a ... [more ▼]

This article presents a systemic approach to the concept of natural intelligence with the aim of creating an artificial intelligence. Thus, the natural intelligence, human and nonhuman animals, is a function composed of faculties to know and understand. In addition, natural intelligence is inseparable from the structure, namely the organs of the brain and body. The temptation is to equip computer systems with artificial intelligence that should have a function composed of the same faculties as those encompassed in human intelligence. The artificial intelligence must also remain inseparable from the structure, namely the organs of an artificial brain and an artificial body. As a result, the artificial robot is the ideal structure to see the emergence of a strong artificial intelligence. Note that a weak artificial intelligence is developed on computer systems by a simulation program of intelligence. In this paper, neural programmable memories will be presented and simulated [less ▲]

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See detailComment programmer un système neuronal avec un langage et une conscience ?
Dubois, Daniel ULg

in Acta Europeana Systemica (2011, December 07), 1

This communication deals with the question to know if this is possible to program a neural system with a language and a consciousness. There are several levels and categories of language, by example ... [more ▼]

This communication deals with the question to know if this is possible to program a neural system with a language and a consciousness. There are several levels and categories of language, by example, verbal and non-verbal languages, signs language, etc. There are also several levels and categories of consciousness, by example, verbal consciousness, non-verbal selfconsciousness, and absence of consciousness with the a-consciousness. By a systemic approach, we extend the role of the brain to the whole neural ectoderm, including the nervous systems, the brainstem, the brain, and the skin that is the actual envelope of the brain to the environment. This paper will demonstrate that such a neural system can be programmed, on the basis of scientific research in experimental neurosciences and in artificial intelligence, extending de facto all the possibilities of learning of classical neural networks. [less ▲]

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See detailAssociation entre le contrôle de la pression artérielle et le rapport sodium/potassium urinaire chez les transplantés rénaux hypertendus
Saint-Remy, Annie ULg; SOMJA, Mélanie ULg; WEEKERS, Laurent ULg et al

in Archives des Maladies du Coeur et des Vaisseaux (2011, December), Hors série 3

Etude de la relation entre le contrôle de la pression artérielle (PA) mesurée en clinique et/ou à domicile chez des transplantés rénaux (Tr) hypertendus et l'excrétion urinaire du sodium (Na), potassium ... [more ▼]

Etude de la relation entre le contrôle de la pression artérielle (PA) mesurée en clinique et/ou à domicile chez des transplantés rénaux (Tr) hypertendus et l'excrétion urinaire du sodium (Na), potassium (K) et de leur rapport (Na/K urinaire et alimentaire) qui pourrait être un indice utile à prendre en compte dans la recherche d'un contrôle efficace de la PA chez les transplantés rénaux. [less ▲]

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See detailEvolution récente de l'incidence des fractures de hanche et de la consommation de médicaments anti-ostéoporotiques en Belgique
Hiligsmann, Mickaël ULg; Bruyère, Olivier ULg; Roberfroid, D. et al

in Revue du Rhumatisme (2011, December), 78(Suppl. 5), 43-44

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See detailEvaluation of organic dust components cytotoxicity on thp1 monocytes-derived-macrophages using high content analysis
Ramery, Eve ULg; O'Brien, Peter James

in Veterinary Clinical Pathology (2011, December), 40(4), 583

Background: Organic dust contains pathogen associated molecular patterns (PAMPs) which can induce, following chronic exposure, significant airway diseases. Mononuclear phagocytes are key protecting cells ... [more ▼]

Background: Organic dust contains pathogen associated molecular patterns (PAMPs) which can induce, following chronic exposure, significant airway diseases. Mononuclear phagocytes are key protecting cells of the respiratory tract. Several studies have investigated the effects of PAMPs, and mainly endotoxins, on cytokine production. However the sub-lethal cytotoxicity of organic dust components on macrophages has not been tested yet. The novel technology of high content analysis (HCA) is already used to assess subclinical drug-induced toxicity. It combines the capabilities of flow cytometry, intracellular fluorescence probes, and image analysis and enables to perform rapid multiple analysis in large numbers of samples. Objectives: The purpose of the present study was, by using HCA, to investigate the cytotoxicity of the 3 major PAMPs contained in organic dust, ie. endotoxin (LPS), peptidoglycan (PGN) and β-glucans (zymosan) on THP-1 monocyte-derived macrophages. Methods: LPS was used at concentrations of 0.005, 0.01, 0.02, 0.05, 0.1 and 1 μg/ml; PGN and zymosan were used at concentrations of 1, 5, 10, 50, 100 and 500 μg/ml. Cells were exposed to PAMPs for 24 hours. In addition, the oxidative burst and the phagocytic capabilities of the cells were tested. Results: An overlap between PGN intrinsic fluorescence and red/far-red fluorescent dyes occurred, rendering the evaluation of some parameters impossible for PGN. LPS induced sub-lethal cytotoxicity at the lowest dose (from 10 ng/ml). However, the most spectacular changes occurred with zymosan. In addition, zymosan, but not LPS, induced phagosome maturation and oxidative burst. Conclusions: Given the fact that β-glucans can be up to 100 fold more concentrated in organic dust than LPS, these results suggest that β-glucans could play a major role in macrophages impairment following heavy dust exposure and will deserve further investigation in the near future. [less ▲]

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See detailApproche par compétences et équité des apprentissages : un mariage impossible ? Etude de cas à propos de l'enseignement de l'histoire
Jadoulle, Jean-Louis ULg

in Puzzle (2011, December), n°30

L'objet de cette communication était de présenter les résultats d'une recherche exploratoire menée dans 5 classes de l'enseignement secondaire de transition en avril-mai 2011.

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See detailPreliminary insight into seed effectiveness of western lowland gorilla (Gorilla g.gorilla)
Petre, Charles-Albert ULg; Tagg, Nikki; Beudels-Jamar, Roseline et al

in Primate Tidings (2011, December), 25

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See detailContrôle de la pression artérielle (PA) et mesure de la rigidité artérielle (RA) chez des transplantés rénaux (TR) (étude EPARA)
Gellner, Karen; Saint-Remy, Annie ULg; BONVOISIN, Catherine ULg et al

in Archives des Maladies du Coeur et des Vaisseaux (2011, December), Hors série 3

EPARA a étudié le contrôle de la PA au cabinet de consultation et en dehors, et l'état de rigidité artérielle chez des transplantés rénaux stables, greffés depuis plus d'un an. Le contrôle de la PA est ... [more ▼]

EPARA a étudié le contrôle de la PA au cabinet de consultation et en dehors, et l'état de rigidité artérielle chez des transplantés rénaux stables, greffés depuis plus d'un an. Le contrôle de la PA est loin d‘être satisfaisant dans cette population de TR hypertendus, traîtés pour la plupart, particulièrement à domicile. L‘HTA masquée est fréquente, associée à un risque cardio-vasculaire élevé et une rigidité accrue des grosses artères. La PAS centrale est d‘autant plus élevée que la fonction rénale est mauvaise. Proposer de recourir systématiquement à des mesures ambulatoires de PA est hautement conseillé chez ce type de patients! [less ▲]

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See detailPure species of grass discrimination with the help of hyperspectral imaging NIR
Dale, Laura ULg; Rotar, Ioan; Bogdan, Anca Dorina et al

in Agronomy Series of Scientific Research = Lucrari Stiintifice Seria Agronomie (2011, December), 54(2), 23-27

The possibilities to discriminate with hyperspectral imaging system, SWIR ImSpector N25E in grass mixtures of the pure species Festuca rubra L., Trifolium repens L., Agrostis capillaris L., Hieracium ... [more ▼]

The possibilities to discriminate with hyperspectral imaging system, SWIR ImSpector N25E in grass mixtures of the pure species Festuca rubra L., Trifolium repens L., Agrostis capillaris L., Hieracium aurantiacum L., Arnica montana L.was the objective of this study. All the samples were collected from natural meadows, from the National Apuseni Park, Apuseni Mountains, from Gârda area. The samples were naturally dried then prepared using the protocol for NIRS analyze. The model built with PLS–DA, was used to demonstrate wether the classes discrimination between pure species is possible or not. The goal of this study was to see in other images if the pure species are or are not recognized according to the spectral data base. The potential of using the Hyperspectral Imaging NIR (Camera NIR) to discriminate or to identify pure species was confirmed. For this technique the MatLab program was used .A percentage of more than 96% correct prediction for species discrimination was obtained. This study should drive to a more important point, which is to verify whether the toxic species are or are not used as food for animals in the natural meadows. The floristic composition of a meadow can be determined only if we have in the data base, dates for each identified species, as being part of the mix. [less ▲]

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See detailImagerie motrice après fracture de l'extrémité distale du radius
BERNARD, Bénédicte ULg; LHOEST, C.; Foidart-Dessalle, Marguerite ULg et al

in Chirurgie de la Main (2011, December), 30(6), 477

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See detailOne-dimensional time-dependent model of cardiac pacemaker activity generated by mechano-electric feedback in a thermo-electro-mechanical context
Collet, Arnaud ULg; Dauby, Pierre ULg

in Archives des Maladies du Coeur et des Vaisseaux. Pratique (2011, December), (Hors-série 3), 20

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See detailEffets de la pression partielle en hydrogène sur la production anaérobie de bioH2 par une bactérie chimiotrophe du genre Clostridium dans un nouveau réacteur à cylindre horizontal rotatif.
Beckers, Laurent ULg; Hiligsmann, Serge ULg; Hamilton, Christopher ULg et al

in Récents Progrès en Génie des Procédés (2011, December), 101

Hydrogen is widely considered as the most promising energetic carrier. At an industrial scale, steam reforming of methane is currently the major hydrogen producing process. But it may also be produced ... [more ▼]

Hydrogen is widely considered as the most promising energetic carrier. At an industrial scale, steam reforming of methane is currently the major hydrogen producing process. But it may also be produced from renewable biomass. Indeed, the fermentative production of hydrogen from renewable biomass using anaerobic bacteria could at least partially reduce our dependence on fossil fuel, decrease the carbon dioxide emissions and produce “green” energy. It offers the potential production of usable hydrogen from a variety of renewable resources such as carbohydrates wastes from agriculture or agro-food industries. This technology is based on anaerobic fermentation, called dark fermentation, by chemotrophic bacteria. The investigations carried out at CWBI involve selection and characterization of bacteria strains able to produce biohydrogen efficiently and with a wide range of substrate. The selected strains at the laboratory has been characterised as Clostridium sp. In order to produce hydrogen at high yields and production rates, the biotechnological process needs to be further optimized and efficient bioreactors must be designed. At CWBI, a new reactor called “horizontal rotating cylinder bioreactor” allows the production of biohydrogen from glucose with our Clostridium sp. strain with a high yield and production rate. This reactor, working continuously, has an internal volume of 2.3l but a working volume (liquid phase) of 300ml. Firstly, it enhances the hydrogen production rate by partially fixing the bacteria on the porous cylinder and thus increasing the cell concentration in the bioreactor. Secondly, the rotative cylinder enables efficient gas transfer (mainly hydrogen) from the liquid phase where it is produced by the bacteria. This is an important way to enhance hydrogen production yield by allowing the bacteria metabolism to shift in a fermentation type that produces more hydrogen. This was confirmed by increasing or decreasing the total pressure in the bioreactor and observing the influence of hydrogen production. The liquid to gas hydrogen transfer is possibly an important factor to enhance the biogas production. Our investigation confirmed this by testing different liquid to gas transfer condition in BHP test (batch fermentation in 250ml serum bottles).This was made either by decreasing total and partial pressure or by increasing the mixing state of the media. Our work concludes the importance of providing good liquid to gas transfers in the biohydrogen producing reactors to enhance the hydrogen production and reach higher yields and production rates. [less ▲]

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See detailExercise and epinephrine affect equine leukocytes distribution and gene expression in a distinct but closely related pattern
Ramery, Eve ULg; Schoenecker, Julie; Art, Tatiana ULg et al

in Veterinary Clinical Pathology (2011, December), 40(4), 583-584

Background: In horses-athletes, exercise has been shown to be an important regulator of immune cells and their functions, and catecholamines to be essential components of the physiological response to ... [more ▼]

Background: In horses-athletes, exercise has been shown to be an important regulator of immune cells and their functions, and catecholamines to be essential components of the physiological response to exercise. Objectives: The purpose of the present study was to compare immunological reactions and molecular events during exercise and epinephrine infusion. Methods: Horses were submitted to exercise or epinephrine infusion for 10 min. Blood samples were collected at T0, T5, Tl0, T20 and T40 min for biochemistry and haematology at T0 and T20 min for RNA extraction and microarray analysis. Results: In both protocols, packed-cell-volume and neutrophils peaked at T5 and T10, and returned to baseline at T40. Lymphocytes increased at T5 with exercise and at T20 with epinephrine and then remained high until the end of the protocols. Between T0 and T20, 55 probes, coding for 25 genes, and 19 probes, coding for 11 genes, were differentially regulated with epinephrine and exercise respectively (P<0.001). Ten of the genes over-expressed with epinephrine were related to inflammatory response and leukocytes trafficking and activation. Among the genes with the highest significant fold changes following exercise were FOS, DUSP-1 and CXCL1. FOS was over-expressed in both conditions. Among genes differentially regulated, Ingenuity software identified 3 overlapping functional networks with epinephrine and 1 functional network with exercise that overlapped the 3 epinephrine networks. Conclusions: Circulating leukocytes distribution and gene expression are rapidly affected following exercise and epinephrine infusion. Distinct but closely-related sets of gene activities were shown to be altered with exercise and epinephrine, with lesser changes in the immunological pattern with physical stress than epinephrine alone, arguing for compensatory mechanisms in exercise. [less ▲]

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