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See detailLa compatibilité du métier de secrétaire communal avec d’autres fonctions : aperçu de lege lata, de lege peractura et de lege ferenda
Donnay, Luc ULg

in L'indépendance du secrétaire communal : utopie ou réalité? (2012)

Il s'agit d'un examen de la compatibilité du métier de secrétaire communal avec d'autres fonctions au regard de la situation législative actuelle et des projets de réformes en cours.

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See detailThe response to copper stress in Streptomyces lividans extends beyond genes under the direct control of a Copper sensitive operon Repressor protein (CsoR)
Dwarakanath, S; Chaplin, AK; Hough, MA et al

in Journal of Biological Chemistry (2012)

A Copper sensitive operon Repressor protein has been identified in Streptomyces livdians (CsoRSl) and found to regulate copper homeostasis with attomolar affinity for Cu(I). Solution studies reveal apo ... [more ▼]

A Copper sensitive operon Repressor protein has been identified in Streptomyces livdians (CsoRSl) and found to regulate copper homeostasis with attomolar affinity for Cu(I). Solution studies reveal apo- and CuI-CsoRSl to be a tetramer assembly and a 1.7 Å resolution crystal structure of apo-CsoRSl reveals that a significant conformational change is necessary to enable Cu(I) binding. In silico prediction of the CsoR regulon was confirmed in vitro (EMSA) and in vivo (RNA-seq) which highlighted that next to the csoR gene itself, the regulon consists of two Cu(I) efflux systems involving a CopZ-like copper metallochaperone protein and a CopA P1-type ATPase. While deletion of csoR has only minor effects on S. lividans development when grown under high copper concentrations, mutations of the Cu(I) ligands decrease tolerance to copper as a result of the Cu(I)-CsoR mutants failing to disengage from the DNA targets, thus inhibiting the derepression of the regulon. RNA-seq experiments carried out on samples incubated with exogenous copper and a ΔcsoR strain showed that the set of genes responding to copper stress is much wider than anticipated and largely extends beyond genes targeted by CsoR. This suggests more control levels are operating and directing other regulons in copper homeostasis beside the CsoR regulon [less ▲]

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See detailComparison of different approaches to evaluate External Quality Assessment Data.
Coucke, Wim; China, Bernard; Delattre, Isabelle et al

in Clinica Chimica Acta (2012), 413(5-6), 582-6

In EQA programs, Z-scores are used to evaluate laboratory performance. They should indicate poorly performing laboratories, regardless of the presence of outliers. For this, two different types of ... [more ▼]

In EQA programs, Z-scores are used to evaluate laboratory performance. They should indicate poorly performing laboratories, regardless of the presence of outliers. For this, two different types of approaches exist. The first type are "outlier-based" approaches, which first exclude outlying values, calculate the average and standard deviation on the remaining data and obtain Z-scores for all values (e.g., Grubbs and Dixon). The second type includes the "robust" approaches (e.g., Tukey and Qn or the algorithm recommended by ISO). The different approaches were assessed by randomly generated samples from the Normal and Student t distributions. Part of the sample data were contaminated with outliers. The number of false and true outliers was recorded and subsequently, Positive and Negative Predictive Values were derived. Also, the sampling mean and variability were calculated for location and scale estimators. The various approaches performed similarly for sample sizes above 10 and when outliers were at good distance from the centre. For smaller sample sizes and closer outliers, however, the approaches performed quite differently. Tukey's method was characterised by a high true and a high false outlier rate, while the ISO and Qn approaches demonstrated weak performance. Grubbs test yielded overall the best results. [less ▲]

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See detailHITUBES PROJECT DESIGN AND INTEGRITY ASSESSMENT OF HIGH STRENGTH TUBULAR STRUCTURES FOR EXTREME LOADING CONDITIONS - D8
Bursi, Oreste S.; Kumar, Anil; Demonceau, Jean-François ULg

Report (2012)

D8.1: Evaluation of the results of the SWOT analysis. D8.2: Evaluation of the results of the monitoring activity.

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See detailImpact of an anxious social situation on emotional facial expressions (EFEs) recognition in children
Dethier, Marie ULg; Taskin, Aslihan Serap; Blairy, Sylvie ULg

in Revue Francophone de Clinique Comportementale et Cognitive (2012), 17(2), 2-9

This study addresses the relationship between the capacity of emotional facial expressions (EFEs) recognition and self-esteem in children placed in an anxious social situation. Seventy children (8 – 12 ... [more ▼]

This study addresses the relationship between the capacity of emotional facial expressions (EFEs) recognition and self-esteem in children placed in an anxious social situation. Seventy children (8 – 12 years) were placed in an anxious social situation of performance in which they were instructed to count aloud backwards, beginning at 200 in decrements of 13. After that, children were assessed on a decoding test of 16 photographs depicting EFE. For each photograph, they evaluated the presence of nine types of emotions. They also completed the Self-Perception Profile for Children (Pierrehumbert et al., 1987). No correlations emerged between the accuracy of EFE recognition and an increase of anxious feelings after the anxious social situation. However, self-esteem was correlated with performance on the EFE recognition test. Moreover, the lower the child’s level of self-esteem was, the more he/she perceived negative emotions in EFEs. In conclusion, social anxiety doesn’t seem to interfere with EFEs recognition performance in an anxious social situation. However, low level of self-esteem in children appears to be associated with deficits and interpretative bias in EFEs recognition in an anxious social situation. [less ▲]

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See detailStudies van de van de Belgische Kring voor Linguïstiek - Travaux du du Cercle Belge de Linguistique - Papers of the Linguistic Society of Belgium
Polis, Stéphane ULg; De Brabanter, Philippe; Cougnon, Louise-Amélie et al

in Studies van de BKL - Travaux du CBL - Papers of the LSB (2012), 7

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See detailGas Migration through Clay Barriers in the Context of Radioactive Waste Disposal: Numerical Modeling of an InSitu Gas Injection Test
Gerard, Pierre ULg; Radu, Jean-Pol ULg; Talandier, Jean et al

in Pijaudier-Cabot, Gilles; Pereira (Eds.) Geomechanics in CO2 Storage Facilities (2012)

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See detailUne nouvelle cité pour les seniors
Squelard, Gilles ULg

in Garcet, Marc (Ed.) Mixité sociale et progrès humain (2012)

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See detailPaléontologie - partim. Paléozoologie (Notes de travaux pratiques - 2012)
Denayer, Julien ULg

Learning material (2012)

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See detailDe la conservation à la restauration écologique: démarche méthodologique
Bangirinama, F; Hakizimana, P; Bogaert, Jan ULg

in Bulletin Scientifique de l'Institut National pour l'Environnement et la Conservation de la Nature (INECN) (2012), 10

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See detailBooks and reading, from the earliest times to the eighteenth century
Opsomer, Carmélia ULg

in Demoulin, Bruno (Ed.) A Cultural History of Wallonia (2012)

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See detailLes relations communautaires en Belgique: approches politiques et linguistiques
Perrez, Julien ULg; Reuchamps, Min ULg

Book published by L’Harmattan / Academia s.a. (2012)

La Belgique connaît depuis de nombreuses années des tensions ou des conflits, qui sont généralement qualifiés de communautaires. Au cœur de ces relations s’entrechoquent une multitude de représentations ... [more ▼]

La Belgique connaît depuis de nombreuses années des tensions ou des conflits, qui sont généralement qualifiés de communautaires. Au cœur de ces relations s’entrechoquent une multitude de représentations au sein et entre les deux grandes communautés. Ces représentations sont véhiculées mais aussi façonnées et contestées par les discours qu’ils soient politiques, médiatiques ou même citoyens. Alliant science politique et linguistique, l’objectif de ce livre est d’explorer ce qui se cache derrière les mots pour mieux comprendre les tensions et les conflits communautaires. Augmenté de regards croisés du Royaume-Uni, de la Suisse et du Canada, cet ouvrage constitue ainsi un point de rencontre entre linguistes et politologues où chacun tente, à partir de sa discipline, de décrypter les images et métaphores qui révèlent nos représentations politiques. Il offre ainsi un éclairage interdisciplinaire original des relations communautaires en Belgique. [less ▲]

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See detailPredictive regulatory models in Drosophila melanogaster by integrative inference of transcriptional networks
Marbach, Daniel; Roy, Sushmita; Ay, Ferhat et al

in Genome research (2012), 22(7), 1334--1349

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See detailA longirostrine Temnodontosaurus (Ichthyosauria) with comments on Early Jurassic ichthyosaur niche partitioning and disparity
Martin, Jeremy; Fischer, Valentin ULg; Vincent, Peggy et al

in Palaeontology (2012), 55(1), 9951005

We describe an almost complete ichthyosaur skeleton from the middle Toarcian (Lower Jurassic) of the Beaujolais foothills near Lyon, France, and assign it to Temnodontosaurus azerguensis sp. nov. This new ... [more ▼]

We describe an almost complete ichthyosaur skeleton from the middle Toarcian (Lower Jurassic) of the Beaujolais foothills near Lyon, France, and assign it to Temnodontosaurus azerguensis sp. nov. This new species exhibits cranial peculiarities such as a thin, elongated and possibly edentulous rostrum, as well as a reduced quadrate. These characters indicate dietary preferences that markedly differ from other species referred to Temnodontosaurus, a genus previously considered as the top predator of the Early Jurassic seas. Despite a conservative postcranial skeleton, we propose that Temnodontosaurus is one of the most ecologically disparate genera of ichthyosaurs, including apex predators and now a soft prey longirostrine hunter. Ammonites collected from the same stratigraphic level as the described specimen indicate that the new species is somewhat younger (bifrons ammonite zone) than the most known Toarcian ichthyosaurs and therefore slightly postdates the interval of severe environmental changes and marine invertebrate extinctions known as the Toarcian Oceanic Anoxic Event. The present study therefore raises the question of whether postcrisis recovery of vertebrate faunas, including the radiation of Temnodontosaurus into a new ecological niche, may have been a consequence of marine ecosystem reorganization across this event. [less ▲]

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See detailEffect of CO2 activation of carbon xerogels on the adsorption of methylene blue
Páez Martínez, Carlos ULg; Contreras, M. S.; Léonard, Angélique ULg et al

in Adsorption (2012), 18(3-4), 199-211

The effect of physical activation with CO2 of carbon xerogels, synthesized by pyrolysis of a resorcinolformaldehyde aqueous gel, on the adsorption capacities of Methylene Blue (MB) was studied. The ... [more ▼]

The effect of physical activation with CO2 of carbon xerogels, synthesized by pyrolysis of a resorcinolformaldehyde aqueous gel, on the adsorption capacities of Methylene Blue (MB) was studied. The activation with CO2 lead to carbon materials with micropore volumes ranging from 0.28 to 0.98 cm³/g -1 C. MB-adsorption isotherm studies showed that the increase of micropore volume and corresponding surface area led to: (i) a significant improvement in the capacity of MB-adsorption at monolayer coverage, from 212 to 714 mgg -1 C, and (ii) an increase of the binding energy related to Langmuir isotherm constant up to 45 times greater than those of commercial microporous activated carbons used as reference (NORIT R2030, CALGON BPL and CALGON NC35). It is proposed that the increase of the binding energy results from chemical cleaning of the O-groups onto carbon surface as a consequence of CO2-activation, increasing the π-π interaction between MB and graphene layers of the carbon xerogels. Finally, a series of batch kinetics were performed to investigate the effect of CO2-activation conditions on the mechanism of MB-adsorption. Experimental data were fitted using pseudo-first-order, pseudo-second-order and intraparticle diffusion kinetic models. From pseudo-second-order kinetic model, one observes an increase in the initial rate of MB-adsorption from 0.019 to 0.0565 min -1, by increasing the specific surface area from 630 to 2180 m²/g -1 C via CO2-activation. Depending on the activation degree of the carbons, two different mechanisms control the MB-adsorption rate: (i) at low activation degree, the intraparticle diffusion is the rate-limiting phenomenon, whereas (ii) at high activation degree, the reactions occurring at the solid/liquid interface are the rate-limiting steps. © 2012 Springer Science+Business Media, LLC. [less ▲]

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See detailEstimation of a general parametric location in censored regression
Heuchenne, Cédric ULg; Van Keilegom, Ingrid

in Exploring research frontiers in contemporary statistics and econometrics - A Festschrift for Léopold Simar (2012)

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See detailThe Essential Oils of Origanum majorana L. and Origanum floribundum Munby in Algeria
Brada, Moussa; Saadi, Abdelkader; Wathelet, Jean-Paul ULg et al

in Journal of Essential Oil-Bearing Plants [=JEOBP] (2012), 15(3), 497-502

The constituents of essential oils isolated by hydrodistillation of the overground parts of Origanum majorana and Origanum floribundum from Algeria were examined by GC and GC-MS. A total of thirty eight ... [more ▼]

The constituents of essential oils isolated by hydrodistillation of the overground parts of Origanum majorana and Origanum floribundum from Algeria were examined by GC and GC-MS. A total of thirty eight and thirty seven components were identified accounting for 93.3 % and 88.9 %, respectively, of the oils of O. majorana and O. floribundum. The oil of O. majorana (yield: 1.2 %) contained, as main components, β-caryophyllene (26.0 %), α-terpinolene (14.7 %), γ-terpinene (10.9 %) and sabinene (9.5 %). Major compounds in the volatile oil of O. floribundum (yield: 1.6 %) were γ-terpinene (34.1 %), p-cymene(27.6 %) and carvacrol (9.6 %). [less ▲]

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See detailSelf-appraisal and medial prefrontal activation in early stage Alzheimer’s disease.
Genon, Sarah ULg; Collette, Fabienne ULg; Angel, Lucie et al

Conference (2012)

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See detailEfficient synthesis of 2,5-diketopiperazines by Staudinger-mediated cyclization
Beagle, Lucas; Hansen, Finn; Monbaliu, Jean-Christophe ULg et al

in Synlett (2012), 23(16), 2337-2340

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See detailIntérêt du broutage des haies et bandes boisées pour les bovins sur parcours en Wallonie
Vandermeulen, Sophie ULg

Master's dissertation (2012)

The establishment of agri-environmental measures in Wallonia promotes hedges and woody strips planting in the agricultural landscape. This study aimed at evaluating the influence of trees and shrubs ... [more ▼]

The establishment of agri-environmental measures in Wallonia promotes hedges and woody strips planting in the agricultural landscape. This study aimed at evaluating the influence of trees and shrubs access on the feeding behaviour of grazing heifers and determining the feeding value of woody species. The second objective was to assess the anti-parasitical effect of these ligneous forages. For 4 consecutive weeks from April to May 2012, 12 dairy heifers were equally distributed among two different groups: one with an open access to a woody hedge (experimental group) and the other not (control group). The feeding behavior of heifers was recorded during days of 10 hours, in relation to the available herbaceous biomass. At the end of the experiment, a faeces analysis was used to assess the presence and the number of parasites infesting heifers. The leaves of 12 woody species harvested in late May 2012 were analyzed for their chemical composition and their in vitro ruminal fermentability using a gas test. The results were compared to those obtained for white clover and ryegrass. The feeding behavior of heifers was influenced by their access to woody species. Indeed, grazing time of control animals (59.8%) was superior to animals that could browse the hedge (54.8%). The experimental animals browsed the ligneous when the pasture herbaceous biomass was the lowest (0.22 kg DM/kgBW*ha), namely the second week of the experiment only. During this week, browsing time represented 3.72% of the time spent on pasture. Faeces parasites analysis showed a significantly lower infestation of trichostrongyles in experimental animals. The chemical composition and kinetic parameters of in vitro ruminal fermentation varied significantly among woody species. The CP content ranged from 14.3% in Viburnum opulus to 31.9% in Sambucus nigra. Fraxinus excelsior had a CP content of 24.5% and a maximum gas production of 120ml/gDM. These values were similar to the values obtained for ryegrass (26.4% CP and 132.2 ml /gDM). The highest maximum gas volume produced was reached for Populus nigra (135.5 ml /gDM) and was equivalent to ryegrass. In conclusion, in the grazing conditions in Wallonia, browsing can be considered as complementary feeding for cattle on pasture with hedges. Indeed, some woody species appear promising for livestock nutrition such as Sambucus nigra, Fraxinus excelsior or Populus nigra. This work is a preliminary study in the sylvopastoral area. Future studies should be explored to confirm the results obtained in this study and to deepen knowledge of this area. [less ▲]

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