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See detailImpact of trade liberalization on Indonesian food crops-General discussion
Burny, Philippe ULg

in Greenshields, Bruce; Bellamy, Margot (Eds.) Government intervention in agriculture : causes and effect (1989)

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See detailImpact of training and exercise intensity on blood antioxidant markers in healthy Standardbred horses
De Moffarts, Brieuc; Kirschvink, Nathalie; Art, Tatiana ULg et al

in Equine & Comparative Exercise Physiology (2004), 1(3), 211-220

This study investigated the effect of training and exercise intensity on blood antioxidant markers in six healthy Standardbred horses. Markers studied were uric acid (UA), ascorbic acid (AA), α-tocopherol ... [more ▼]

This study investigated the effect of training and exercise intensity on blood antioxidant markers in six healthy Standardbred horses. Markers studied were uric acid (UA), ascorbic acid (AA), α-tocopherol, vitamin A (Vit A), superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione – reduced (GSH) and oxidized (GSSG), glutathione redox ratio (GRR), copper (Cu), zinc (Zn) and selenium (Se). The horses performed a standardized exercise test (SET) when they were untrained (T0), after 4 weeks of light training (T4) and after 8 weeks of interval training (T12). Forty-eight hours after SET T4 and SET T12, a SET with run up to fatigue (TTF4 and TTF12) was performed. Maximal oxygen consumption (V˙O2max) was determined within 3–5 days after TTF4 and TTF12. At each test (SET T(i) and TTF(i)), venous blood was sampled at rest (R), peak-exercise (Emax), 15 (E15) and 60 (E60) min after the test. UA, AA and GRR were increased significantly by the exercise, whereas GSH and Vit A were decreased significantly (P<0.05). Training-related increases (T0 vs. T4 vs. T12) were observed for UA, SOD, GPx and Se, whereas GSH, α-tocopherol and Zn decreased (P<0.05). Exercise intensity (TTF(i) vs. T(i)) increased UA and AA significantly and decreased GSH significantly (P<0.05). A significant correlation between ΔSOD and ΔV˙O2max (r=0.86, p<0.05) determined at SET T4 and SET T12 was found. Taken together, these results indicate that training and exercise intensity significantly influence blood antioxidant markers in healthy Standardbred horses [less ▲]

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See detailThe impact of trait emotional intelligence on nursing team performance and cohesiveness.
Quoidbach, Jordi ULg; Hansenne, Michel ULg

in Journal of Professional Nursing (2009), 25(1), 23-9

Claims about the positive influence of emotional intelligence (EI) on work team performance are very numerous, both in commercial and scientific literature. However, despite the huge interest that media ... [more ▼]

Claims about the positive influence of emotional intelligence (EI) on work team performance are very numerous, both in commercial and scientific literature. However, despite the huge interest that media and business consultants put in EI and its fast-growing use in organizations, there is very little empirical evidence to support these claims. In this study, we investigated the relationships between EI, performance, and cohesiveness in 23 nursing teams. EI was assessed using the modified version of the Schutte Emotional Intelligence Scale and cohesiveness with the Group Cohesiveness Scale. Finally, nursing team performance was measured at four different levels: job satisfaction, chief nursing executives' rating, turnover rate, and health care quality. Results showed that health care quality was positively correlated with emotion regulation. Emotion regulation was also positively correlated with group cohesiveness. Surprisingly, it also appears that emotion appraisal was negatively correlated with the health care quality provided by teams. These results suggest that EI and, more specifically, Emotional Regulation may provide an interesting new way of enhancing nursing teams' cohesion and patient/client outcomes. [less ▲]

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See detailThe impact of translated tests on student' performances
Baye, Ariane ULg; Lafontaine, Dominique ULg

Conference (2006, July)

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See detailImpact of Transport and Dynamical Processes Upon Stellar Oscillation Frequencies
Goupil, M. J.; Dupret, Marc-Antoine ULg

in EAS Publications Series (2007)

In order to prepare the theoretical interpretation of the oscillation frequencies detected by CoRoT, comparisons of results from standard stellar models by the ESTA group have proven to be very useful ... [more ▼]

In order to prepare the theoretical interpretation of the oscillation frequencies detected by CoRoT, comparisons of results from standard stellar models by the ESTA group have proven to be very useful. The next issue which is briefly addressed here is ``what are the additional physical processes that must be included in stellar models computed with different evolutionary codes for the next comparison exercises?'' We therefore discuss the impact on oscillation frequencies of several physical processes which are still poorly understood and/or poorly modelled but cannot be fully discarded. [less ▲]

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See detailThe impact of transport policies on railroad intermodal freight competitiveness – The case of Belgium
Santos, Bruno F.; Limbourg, Sabine ULg; Carreira, Joana Silva

in Transportation Research. Part D : Transport and Environment (2015), 34

This paper discusses the impact of three freight transport policies aiming to promote railroad intermodal transport in Europe, and examines the case of Belgium as a testing ground. These policies consist ... [more ▼]

This paper discusses the impact of three freight transport policies aiming to promote railroad intermodal transport in Europe, and examines the case of Belgium as a testing ground. These policies consist in subsidizing intermodal transport operations (such as in Belgium, to stimulate rail transport), internalizing external costs (as recommended by the European Union in order to foster cleaner modes), and adopting a system perspective when optimizing the location of inland intermodal terminals. The study proposes an innovative mixed integer intermodal freight location-allocation model based on hub-location theory and deals with non-linear transport costs in order to replicate economies of distance. Our analysis suggests that subsidizing has a significant impact on the volumes transported by intermodal transport, and, to a lesser extent, that optimizing terminal location increases the competitiveness of intermodal transport. On the other hand, according to our assumptions, internalizing external costs can negatively impact the promotion of intermodality. This finding indicates that innovative last-mile transports are needed in order to reduce the external impacts of drayage operations. [less ▲]

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See detailImpact of traps on the electrical characteristics of GeSn/Ge diodes
Baert, Bruno ULg; Gupta, Somya; Gencarelli, Federica et al

Poster (2014, September 15)

Germanium-tin alloys are currently receiving a lot of attention as materials for high performance MOSFET devices. Much interest is focused on the direct band gap for Sn concentrations above 8-10% and the ... [more ▼]

Germanium-tin alloys are currently receiving a lot of attention as materials for high performance MOSFET devices. Much interest is focused on the direct band gap for Sn concentrations above 8-10% and the achievement of high mobility values, which can be further increased by the strain due to the lattice mismatch with Ge or Si. GeSn is therefore expected to play a key role in the development of either source and drain stressors for Ge p-MOSFETs or for GeSn channel MOSFETs. However, despite recent tremendous progress in the growth of such materials, the impact of defects at the interface between Ge and GeSn has not been completely characterized. As the processing of diodes contains many of the steps necessary to the fabrication of MOSFET devices, we have investigated the effect of traps on the electrical characteristics of p-GeSn/n-Ge diodes, made from GeSn layers grown by CVD on Ge and in-situ doped with Boron. Using temperature-dependent current-voltage (I-V) and capacitance- voltage (C-V) measurements, we have calculated the ideality factor of the diodes, the activation energy of the reverse saturation current and the carrier concentration of the Ge substrate. In this work, based on the comparison with results obtained from numerical simulations, we discuss these characteristics in view of assessing the extent to which electronic trap states in these heterostructures affect their electrical properties. [less ▲]

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See detailImpact of tree species on the distribution of alkaliextractable Si in a Cambisol
Cornelis, Jean-Thomas ULg; Ranger, Jacques; Delvaux, Bruno

Poster (2010)

Abstract : In terrestrial ecosystems, silicon (Si) uptake by higher plants induces biogenic silica (BSi) deposits in leaves, which contribute to the amorphous silica (ASi) pool in soil through litter-fall ... [more ▼]

Abstract : In terrestrial ecosystems, silicon (Si) uptake by higher plants induces biogenic silica (BSi) deposits in leaves, which contribute to the amorphous silica (ASi) pool in soil through litter-fall. In forests, the ASi pool, including BSi, is ubiquitous and a substantial component of soils, which might influence the Si mass-balance at watershed scale. Here, we examined the distribution of ASi pool, estimated by alkaline dissolution (alkali-extractable Si), in an acid brown soil under three common European tree species in identical soil and climate conditions in order (i) to study how the Si recycling by tree species impacts the ASi pool in soil, and (ii) to identify the different constituents of the alkali-extractable Si pool in soil. We therefore quantified the ASi concentration with alkaline extraction (Na2CO3, 0.1M), the Si adsorbed onto poorly crystalline Fe oxides by oxalate extraction and the “plant-available Si” by CaCl2 extraction. In humus layer, the alkali-extractable Si concentration (mg SiO2 g-1) significantly decreases in the sequence: Douglas fir (14.5±0.65) > European beech (11.8±0.30) > Black pine (5.4±0.31). Below 15 cm soil depth, the alkali-extractable Si concentration is not significantly different between tree species. For each tree species, the alkali-extractable Si concentration in soil decreases from the humus layer to 15 cm depth and then slightly increases from 15 to 75 cm depth. Our data clearly show that tree species can impact the ASi content in topsoil (humus layer - 15 cm) through different Si uptake rates. Indeed, various Si recycling by forest vegetation imply different rates of BSi accumulation in leaves and then, different rates of BSi restitution on topsoil. In mineral layers, pedogenic processes play an important role in the ASi distribution given the alkali-extractable Si pool is mostly influenced by BSi dissolution, stable BSi preservation/translocation and secondarily by Si adsorption onto active amorphous Fe oxide surface. [less ▲]

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See detailImpact of tree species on the distribution of amorphous silica in an acid brown soil
Cornelis, Jean-Thomas ULg; Ranger, Jacques; Delvaux, Bruno

Conference (2009)

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See detailImpact of triclosan on behaviour and neural development of Cyprinodon variegatus
Benichou, Farida; Rahmouni, Chahrazed; Denoël, Mathieu ULg et al

Poster (2014, December)

The study focussed on the effects of triclosan (TCS) exposure on mobility and hearing capacities of Cyprinodon variegatus larvae. TCS is an omnipresent antimicrobial and contaminant of aquatic ecosystems ... [more ▼]

The study focussed on the effects of triclosan (TCS) exposure on mobility and hearing capacities of Cyprinodon variegatus larvae. TCS is an omnipresent antimicrobial and contaminant of aquatic ecosystems, which can act as endocrine disruptor, mainly by modifying thyroid functioning. Larval stages are particularly vulnerable to deleterious effects of endocrine disrupters because of potential impairment of fish development and behaviour. Exposure to TCS was conducted at fertilization of eggs at concentrations likely to be found in the environment: 20, 50 and 100 μg.l-1. The analysis of growth parameters of C. variegatus showed no effect of TCS on the fertility of eggs, survival and larval weight. Subsequently, THs concentrations were measured on 15 days post hatching larvae. THs are initially produced as T4 (thyroxine) cells and then converted in the bioactive form of T3 (triiodothyronine) cells. The observed increase of T4 and T3 cells in larvae exposed to 50 and 100 μg.l-1 suggests an increase in THs synthesis as a consequence of TCS exposure. Auditory thresholds of larvae were determined using ABR (Auditory Brainstem Response) technique, and finally larval mobility was measured. For both parameters no significant differences were observed among the three different treatments. Audiograms showed that the auditory system is not yet completely established at 30 days post hatching. However, these results allowed us to consider C. variegatus as an “hearing generalist” because this species have a hearing sensitivity lower than 2000 Hz. Regarding locomotion, our result summarized short time experiences targeting only swimming speed, distance and degree of mobility. It would be interesting to expand the behavioural aspects on other parameters of locomotion and integrate Cyprinodon reaction to different stress (light or touch). In conclusion, our results require an extensive long-term study on the full life cycle of C. variegatus, in order to evaluate the impact of triclosan on neural function and behaviour through several generations. [less ▲]

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See detailImpact of two novel mutations of calcium sensing receptor (CaSR) gene on calcium metabolism : two clinical case reports
Livadariu, E.; Auriemma, R. S.; Rydlewski, C. et al

in Endocrine Abstracts - 13th European Congress of Endocrinology (2011)

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See detailImpact of uncertainty in climate forcing on projections of the West Antarctic ice sheet over the 21st and 22nd centuries
Payne, A.J.; Cornford, S.L.; Martin, D.F. et al

E-print/Working paper (2013)

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See detailImpact of uranium mining and processing on the environment of mountainous areas of Kyrgyzstan
Torgoev, Isakbek; Aleshyn, U; Havenith, Hans-Balder ULg

in Uranium in the Aquatic Environment (2002)

Abstract: In this report the results of analysis of modern geo-ecological situation in areas of uranium mining and milling in the territory of Kyrgyzstan are presented. Major threats for the mountain ... [more ▼]

Abstract: In this report the results of analysis of modern geo-ecological situation in areas of uranium mining and milling in the territory of Kyrgyzstan are presented. Major threats for the mountain environment and citizens which are connected to mining and processing of the uranium are due to the contamination of the hydrosphere by radio nuclides, and due to the stimulation of dangerous natural and technological processes (landslides, mudflows, destruction of the tailings and dumps) with unfavorable ecological consequences. [less ▲]

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See detailImpact of urban form on daily travel: a comparative analysis
Cools, Mario ULg; Laterrasse, Jean; Le Néchet, Florent

Conference (2013)

Along with the emergence of Mega City Regions (MCRs) in Europe, mobility patterns have become increasingly polycentric. Since urban planning issues are especially difficult at this scale, it is important ... [more ▼]

Along with the emergence of Mega City Regions (MCRs) in Europe, mobility patterns have become increasingly polycentric. Since urban planning issues are especially difficult at this scale, it is important to assess the impact of the different evolutions in Mega City Region on important indicators such as daily travel times and daily travel distances. Therefore, in this study the differences between monocentric and polycentric MCRs in terms of travel distances and travel times for constraint and unconstraint mobility are investigated. To this end, four different MCRs were selected for the study: the Paris and Rhine-Ruhr metropolitan areas and the Randstad and Belgian Mega-City Region. For these MCRs regions, the travel times and distances were derived from the national travel surveys. Special attention was paid to the harmonization exercise based, calculating the daily travel distances for 7 different purposes and 9 different transport modes. With respect to the socio-demographics, the least common denominator was used to define comparable socio-demographics. Results indicate clear differences between the monocentric and polycentric regions, especially with respect to shopping and leisure trips. In addition, some policy interventions could be defined based upon the results of the disaggregation based on the socio-demographics. [less ▲]

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See detailThe impact of visual complexity on visual short-term memory in children with specific language impairment
Leclercq, Anne-Lise ULg; Maillart, Christelle ULg; Pauquay, Sarah et al

in Journal of the International Neuropsychological Society (2012), 18

Many studies have assessed visual short-term memory (VSTM) abilities in children with specific language impairment (SLI), with contrasting results: some studies observed preserved VSTM capacities while ... [more ▼]

Many studies have assessed visual short-term memory (VSTM) abilities in children with specific language impairment (SLI), with contrasting results: some studies observed preserved VSTM capacities while others reported impaired VSTM. The present study explores the hypothesis that the complexity of the visual information to be encoded and stored might underlie these discrepancies. Four VSTM conditions were administered to a group of 15 children with SLI, as well as to two groups of typically developing children, matched for chronological age and for VSTM capacity for visually simple stimuli, respectively. The stimuli to be remembered varied in their visual similarity and in the number of their visual features. Across the four VSTM conditions, children with SLI showed significantly reduced performance relative to an age-matched control group, and they were more strongly affected by visual similarity and number of features when compared to a control group matched for VSTM capacity for visually simple stimuli. The present results support the hypothesis that stimulus complexity is a determining factor of the poor VSTM performances in children with SLI. [less ▲]

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See detailImpact of visual modality on acoustic assessment of rooms
Defays, Aurore ULg; Safin, Stéphane ULg; Billon, Alexis ULg et al

Poster (2011, May 27)

In the context of the conception of a multimodal immersive environment aimed to support the task of assessing the acoustical quality of rooms based on numerical simulations, we study the relationship ... [more ▼]

In the context of the conception of a multimodal immersive environment aimed to support the task of assessing the acoustical quality of rooms based on numerical simulations, we study the relationship between image and sound. Auralias project aims to develop an immersive environment for a collaborative work between architects and acousticians combining 3D sound rendering and 3D view of the room model. In this study, we analyzed the impact of a room picture on the acoustic assessment. We chose reverberation as acoustic parameter. First, we confronted 70 subjects with a sound clip and asked them to assess the reverberation degree (control condition). Then, we divided the subjects into three groups and repeated the same judgment task. However, in the first group, subjects listening the sound clip were confronted with a room picture consistent with the sound. In the second group, they were confronted with a « distractor » room picture (no link with the sound). In the last group, they listened the sound clip without any room picture. Our results showed a positive impact of consistent pictures on reverberation assessment but we found no effect of distractor pictures. [less ▲]

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See detailThe impact of visual perceptual learning on sleep and local slow wave initiation
Mascetti, Laura ULg; Muto, Vincenzo ULg; Matarazzo, Luca et al

in Journal of Neuroscience (2013)

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See detailImpact of vocal load during a prolonged reading task with specific emphasis on the output level
Remacle, Angélique ULg; Roche, Anne ULg; Finck, Camille ULg et al

Conference (2010, October 18)

La charge vocale se définit comme la quantité d'utilisation vocale en termes de durée et d'intensité vocale. Dans cette étude, nous tentons d'étudier la charge vocale selon ces deux aspects. Pour ce faire ... [more ▼]

La charge vocale se définit comme la quantité d'utilisation vocale en termes de durée et d'intensité vocale. Dans cette étude, nous tentons d'étudier la charge vocale selon ces deux aspects. Pour ce faire, nous avons proposé une tâche de lecture à 50 femmes non fumeuses, âgées de 22 à 47 ans, chez qui l'examen phoniatrique a exclu la présence de toute pathologie vocale. L'impact de la durée de l'utilisation vocale a été étudié à l'aide de récoltes de mesures toutes les 30 minutes, au cours d'une lecture de deux heures. Nous avons réalisé des mesures objectives (Fréquence fondamentale, Jitter %, Shimmer %, Noise-to-Harmonic Ratio, étendue fréquentielle, dynamique d'intensité, temps maximum de phonation) ainsi qu'une auto évaluation sur une échelle visuelle analogique (qualité vocale, sensation d'effort, de fatigue et d'inconfort laryngé au cours de la lecture). Afin de mettre en évidence l'effet de l'intensité, chaque participante a réalisé deux fois la tâche de deux heures de lecture, à minimum trois jours d'intervalle afin de permettre la récupération entre les deux conditions de test. Une première fois à intensité conversationnelle (entre 60 et 65 dB), une seconde fois à intensité élevée (entre 70 et 75 dB). L'objectif était d'étudier les modifications liées à la durée et à l'intensité de l'utilisation vocale ainsi que l'impact de l'échauffement et de la fatigue vocale sur les paramètres étudiés. [less ▲]

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