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See detailA subcritical damage model for clay as a two-scale material
François, Bertrand ULg; Dascalu, Cristian

in CLAYS IN NATURAL & ENGINEERED BARRIERS FOR RADIOACTIVE WASTE CONFINEMENT (2010)

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See detailFirst man in the eastern Finland : an Early Mesolithic inland site with a red-ochre grave in Joensuu Rahakangas
Pesonen, Petro; Hertell, Esa; Nyholm, Mikael et al

Poster (2010)

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See detailMeasurement uncertainty for the analysis of serum 25-hydroxyvitamin D: response to Stepman and Thienpont
Cavalier, Etienne ULg; Delanaye, Pierre ULg; Cormier, Catherine et al

in Osteoporosis International (2010), 21

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See detailStéréotypes prescriptifs et avantages des groupes dominants
Delacollette, Nathalie ULg; Dardenne, Benoît ULg; Dumont, Muriel ULg

in Année Psychologique (L') (2010), 110

The prescriptive component of stereotypes is defined as a set of beliefs about the characteristics group members should possess. It has mainly been studied regarding gender stereotypes. We believe that ... [more ▼]

The prescriptive component of stereotypes is defined as a set of beliefs about the characteristics group members should possess. It has mainly been studied regarding gender stereotypes. We believe that the main function of this prescriptive component is to allow dominant group members to maintain subordinate group members in an advantageous position for themselves. To illustrate our proposal, we present several theoretical and empirical papers, showing that the relative status of social groups is a determinant of which characteristics are prescribed to the members of these groups; that subordinates who fail to conform to the prescription are sanctioned; and that dominants prescribe to subordinates characteristics they see as beneficial to their own group. [less ▲]

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See detailIn vitro simulation of oxic/suboxic diagenesis in an estuarine fluid mud subjected to redox oscillations
Abril, Gwenael; Commarieu, Marc-Vincent ULg; Etcheber, Henri et al

in Estuarine Coastal And Shelf Science (2010), 88(2), 279-291

Estuarine turbidity maxima (ETMs) are sites of intense mineralisation of land-derived particulate organic matter (OM), which occurs under oxic/suboxic oscillating conditions owing to repetitive ... [more ▼]

Estuarine turbidity maxima (ETMs) are sites of intense mineralisation of land-derived particulate organic matter (OM), which occurs under oxic/suboxic oscillating conditions owing to repetitive sedimentation and resuspension cycles at tidal and neap-spring time scales. To investigate the biogeochemical processes involved in OM mineralisation in ETMs, an experimental set up was developed to simulate in vitro oxic/anoxic oscillations in turbid waters and to follow the short timescale changes in oxygen, carbon, nitrogen, and manganese concentration and speciation. We present here the results of a 27-day experiment (three oxic periods and two anoxic periods) with an estuarine fluid mud from the Gironde estuary. Time courses of chemical species throughout the experiment evidenced the occurrence of four distinct characteristic periods with very different properties. Steady oxic conditions were characterised by oxygen consumption rates between 10 and 40 mu mol L-1 h(-1), dissolved inorganic carbon (DIC) production of 9-12 mu mol L-1 h(-1), very low NE4+ and Mn2+ concentrations, and constant NO3 production rates (0.4 - 0.7 mu mol L-1 h(-1)) due to coupled ammonification and nitrification. The beginning of anoxic periods (24 h following oxic to anoxic switches) showed DIC production rates of 2.5-8.6 mu mol L-1 h(-1) and very fast NO consumption (5.6-6.3 mu mol L-1 h(-1)) and NH4+ production (1.4-1.5 mu mol L-1 h(-1)). The latter rates were positively correlated to NO concentration and were apparently caused by the predominance of denitrification and dissimilatory nitrate reduction to ammonia. Steady anoxic periods were characterised by constant and low NO3- concentrations and DIG and NH4+ productions of less than 1.3 and 0.1 mu mol L-1 h(-1), respectively. Mn2+ and CH4 were produced at constant rates (respectively 0.3 and 0.015 mu mol L-1 h(-1)) throughout the whole anoxic periods and in the presence of nitrate. Finally, reoxidation periods (24-36 h following anoxic to oxic switches) showed rapid NH4+ and Mn2+ decreases to zero (1.6 and 0.8-2 mu mol L-1 h(-1), respectively) and very fast NO production (3 mu mol L-1 h(-1)). This NO3- production, together with marked transient peaks of dissolved organic carbon a few hours after anoxic to oxic switches, suggested that particulate OM mineralisation was enhanced during these transient reoxidation periods. An analysis based on C and N mass balance suggested that redox oscillation on short time scales (day to week) enhanced OM mineralisation relative to both steady oxic and steady anoxic conditions, making ETMs efficient biogeochemical reactors for the mineralisation of refractory terrestrial OM at the land-sea interface. (C) 2010 Elsevier Ltd. All rights reserved. [less ▲]

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See detailEvaluation of sinks and sources of CO2 in the global coastal ocean using a spatially-explicit typology of estuaries and continental shelves
Laruelle, Goulven G; Durr, Hans H; Slomp, Caroline P et al

in Geophysical Research Letters (2010), 37

The exchange of CO2 between the atmosphere and the global coastal ocean was evaluated from a compilation of air-water CO2 fluxes scaled using a spatially-explicit global typology of inner estuaries ... [more ▼]

The exchange of CO2 between the atmosphere and the global coastal ocean was evaluated from a compilation of air-water CO2 fluxes scaled using a spatially-explicit global typology of inner estuaries (excluding outer estuaries such as large river deltas) and continental shelves. The computed emission of CO2 to the atmosphere from estuaries (+0.27 +/- 0.23 PgC yr(-1)) is similar to 26% to similar to 55% lower than previous estimates while the sink of atmospheric CO2 over continental shelf seas (-0.21 +/- 0.36 PgC yr(-1)) is at the low end of the range of previous estimates (-0.22 to -1.00 PgC yr(-1)). The air-sea CO2 flux per surface area over continental shelf seas (-0.7 +/- 1.2 molC m(-2) yr(-1)) is the double of the value in the open ocean based on the most recent CO2 climatology. The largest uncertainty of scaling approaches remains in the availability of CO2 data to describe the spatial variability, and to capture relevant temporal scales of variability. Citation: Laruelle, G. G., H. H. Durr, C. P. Slomp, and A. V. Borges (2010), Evaluation of sinks and sources of CO2 in the global coastal ocean using a spatially-explicit typology of estuaries and continental shelves, Geophys. Res. Lett., 37, L15607, doi:10.1029/2010GL043691. [less ▲]

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See detailDevelopment and characterization of SSR markers for pomegranate (Punica granatum L.) using an enriched library
Hasnaoui, Nejib ULg; Buonamici, Anna; Sebastiani, Federico et al

in Conservation Genetics Resources (2010), 2

In the present work, we report the development of 11 microstallite markers (SSR) for Punica granatum. Evaluated on a set of 27 pomegranate accessions sampled in Tunisia, they displayed 25 alleles, with ... [more ▼]

In the present work, we report the development of 11 microstallite markers (SSR) for Punica granatum. Evaluated on a set of 27 pomegranate accessions sampled in Tunisia, they displayed 25 alleles, with number of alleles per locus ranging between 1 and 4, and an observed heterozygosity from 0.037 and 0.592. This set of SSR markers can be very useful for studies dealing with genetic diversity assessment of germplasm, with cultivars/varieties fingerprinting and pedigree analysis of this economically important fruit species. [less ▲]

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See detailLa bande dessinée est-elle un art mineur ? Le laboratoire expérimental de Chris Ware
Hagelstein, Maud ULg

in Flux News (2010)

En regard du développement exponentiel des Cultural studies dans les pays anglo-saxons, il faut reconnaître que les intellectuels du Continent se sont toujours montrés frileux face aux produits de la ... [more ▼]

En regard du développement exponentiel des Cultural studies dans les pays anglo-saxons, il faut reconnaître que les intellectuels du Continent se sont toujours montrés frileux face aux produits de la culture populaire. Mises à part quelques sorties récentes sur Matrix (pour prendre l’exemple le plus criant), l’engouement reste modéré. On sait que le monde de l’art n’est pas privé de zones obscures, « mineures », peu fréquentées par les théoriciens qui font autorité. Dans le domaine des études théoriques, les aspects populaires de notre culture passent facilement à la trappe. Mais qu’entend-on exactement par populaire ? Question immense, réponse souvent stéréotypée : ces choses qui plaisent directement, qui se consomment sans grand effort, qui sont accessibles à tous. La bande dessinée, bien entendu. On peut sans se tromper déposer au pied du sapin les classiques indémodables. Au mieux, la bande dessinée est associée au divertissement, au pire, elle est un « art » de digestion. L'exemple de Chris Ware servira ici à déjouer le débat stérile autour de la valeur culturelle de la bande dessinée pour se concentrer sur les innovations tout droit sorties de son laboratoire expérimental. [less ▲]

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See detailContribution of positron emission tomography in pleural disease.
Duysinx, Bernard ULg; Corhay, Jean-Louis ULg; Larock, Marie-Paule ULg et al

in Revue des Maladies Respiratoires (2010), 27(8), 47-53

INTRODUCTION: Positron emission tomography (PET) now plays a clear role in oncology, especially in chest tumours. We discuss the value of metabolic imaging in characterising pleural pathology in the light ... [more ▼]

INTRODUCTION: Positron emission tomography (PET) now plays a clear role in oncology, especially in chest tumours. We discuss the value of metabolic imaging in characterising pleural pathology in the light of our own experience and review the literature. BACKGROUND: PET is particularly useful in characterising malignant pleural pathologies and is a factor of prognosis in mesothelioma. Metabolic imaging also provides clinical information for staging lung cancer, in researching the primary tumour in metastatic pleurisy and in monitoring chronic or recurrent pleural pathologies. CONCLUSIONS: PET should therefore be considered as a useful tool in the diagnosis of liquid or solid pleural pathologies. [less ▲]

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See detailIdentification d’une nouvelle molécule d’intérêt chez le cheval atteint d’obstruction récurrente des voies respiratoires: La Pentraxine 3
Ramery, Eve ULg

Doctoral thesis (2010)

L’ORVR ou obstruction récurrente des voies respiratoires (ORVR) est la cause la plus fréquente de maladie pulmonaire chronique chez le cheval adulte. La maladie se caractérise par une hyperréactivité ... [more ▼]

L’ORVR ou obstruction récurrente des voies respiratoires (ORVR) est la cause la plus fréquente de maladie pulmonaire chronique chez le cheval adulte. La maladie se caractérise par une hyperréactivité bronchique, une production excessive de mucus et une inflammation neutrophilique pulmonaire qui ont pour effet de réduire la compliance dynamique du poumon et d’augmenter la résistance des voies respiratoires au débit aérien. Alors que la maladie est une entité documentée dans la littérature depuis plus de 200 ans, les mécanismes moléculaires qui la sous-tendent restent incomplètement élucidés à ce jour. De précédentes études ont montré l'implication de variations d'expression génique, pour la plupart grâce à l'utilisation combinée de la transcription inverse et de la réaction en chaîne par polymérase (RT-PCR). Cette technique bien connue ne permet l'étude que d'un nombre limité de gènes en simultané. Les microdamiers apparaissent comme la technique de choix pour l'étude de l'expression génique à large échelle. A l’heure où cette étude a débuté, il n’existait pas de microdamier d’expression spécifiquement dédié au cheval sur le marché. Un microdamier hétérologue humain (Human Genome U133 Plus 2.0 GeneChip, Affymetrix®) a donc été utilisé pour tenter d’identifier de nouveaux gènes d’intérêt pour comprendre la pathogénie de l’ORVR chez le cheval. L'utilisation du microdamier a permis de détecter 46 gènes dont l’expression variait d'un facteur supérieur à 4 entre chevaux sains et atteints. Parmi les gènes mis en avant par le microdamier, trois gènes (CYBB, MARCKS et PTX3) présentaient un intérêt particulier au regard de la littérature et leur variation d’expression a été confirmée par RT-PCR quantitative (RT-qPCR). La pentraxine 3 (PTX3) notamment appartient à la composante humorale de la réponse immune innée. Elle agit comme un ancêtre fonctionnel des anticorps. En effet, elle reconnaît les microbes, active le complément et facilite la reconnaissance de certains pathogènes spécifiques, dont Aspergillus fumigatus (A. fumigatus), par les phagocytes. La suite du travail s’est donc focalisée sur PTX3. L’ADN complémentaire (ADNc) codant pour PTX3 et l’ADN codant pour le second exon de PTX3 ont été clonés et séquencés. L’ADN codant pour le second exon de PTX3 équin présentait une délétion de 120 paires de bases par rapport à la séquence humaine. Par ailleurs, un épissage alternatif du second exon de PTX3 a été mis en évidence, résultant en deux formes de la protéine, "épissée" (32 kilodaltons) et "complète" (42 kilodaltons). Afin d'étudier les effets de l’exposition à des poussières de foin sur l'expression de PTX3 dans les voies respiratoires, six chevaux sains et six chevaux atteints d’ORVR ont été soumis pendant dix jours à un challenge environnemental aux poussières de foin. Les chevaux ont été étudiés via des tests cliniques, fonctionnels et biochimiques. Les lavages broncho-alvéolaires (LBA) ont été récoltés lors de l'initiation du protocole et après les dix jours d'exposition aux poussières de foin. Par ailleurs, des sections bronchiques ont été réalisées chez deux chevaux atteints d'ORVR en crise et euthanasiés pour raisons éthiques et deux chevaux indemnes d'affections respiratoires provenant de l'abattoir. PTX3 était détectée dans les macrophages du LBA après exposition aux poussières de foin et dans les cellules épithéliales bronchiques. PTX3 était surexprimée dans les macrophages du LBA chez tous les chevaux après dix jours d'exposition aux poussières de foin. Cependant, le niveau de PTX3 était plus élevé dans le surnageant des cellules provenant des chevaux atteints d'ORVR que dans celui provenant des cellules des chevaux sains. Par ailleurs, il semble que PTX3 soit surexprimée dans les cellules épithéliales bronchiques chez le cheval atteint d'ORVR. Cette piste est intéressante sur le plan thérapeutique puisque l'activation de l'expression de PTX3 dans les cellules épithéliales bronchiques est sous le contrôle du facteur c-Jun N-terminal kinase (JNK), un facteur différent de celui qui contrôle l'expression de PTX3 dans les leucocytes, à savoir le facteur nucléaire kappa B (NF-κB). L'effet de différents stimuli sur la production et l’excrétion de PTX3 par les cellules du LBA a été étudié ex-vivo après mise en culture et stimulation à la poussière de foin, au lipopolysaccharide (LPS), à A. fumigatus et avec une solution saline tamponnée pour le phosphate (PBS), utilisée comme contrôle. La présence de PTX3 a été mesurée par Western Blot six heures et vingt-quatre heures après les différentes stimulations dans les cellules et dans les surnageants respectivement. PTX3 était détectée dans les cellules et dans les surnageants mais aucune différence significative d'expression n’a pu être mise en évidence que ce soit entre les différents stimuli, entre les différents temps ou avec le contrôle. Ces résultats suggèrent que la poussière de foin est un inducteur indirect de PTX3. [less ▲]

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See detailStructure of the minimal automaton of a numeration language and applications to state complexity
Charlier, Emilie ULg; Rampersad, Narad ULg; Rigo, Michel ULg et al

in Actes des Journées Montoises d'Informatique Théorique (2010)

We study the structure of automata accepting the greedy representations of N in a wide class of numeration systems. We describe the conditions under which such automata can have more than one strongly ... [more ▼]

We study the structure of automata accepting the greedy representations of N in a wide class of numeration systems. We describe the conditions under which such automata can have more than one strongly connected component and the form of any such additional components. Our characterization applies, in particular, to any automaton arising from a Bertrand numeration system. Furthermore, we show that for any automaton A arising from a system with a dominant root > 1, there is a morphism mapping A onto the automaton arising from the Bertrand system associated with the number . Under some mild assumptions, we also study the state complexity of the trim minimal automaton accepting the greedy representations of the multiples of m>=2 for a wide class of linear numeration systems. As an example, the number of states of the trim minimal automaton accepting the greedy representations of mN in the Fibonacci system is exactly 2m^2. [less ▲]

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See detailAssociation between frontal EEG asymmetries and emotional intelligence among adults
Mikolajczak, Moïra; Bodarwé, Kerrin; Laloyaux, Olivier et al

in Personality & Individual Differences (2010), 48(2), 177-181

This study aimed at investigating the brain correlates of trait emotional intelligence. Trait emotional intelligence (trait EI) is a constellation of emotion-related traits, capturing the extent to which ... [more ▼]

This study aimed at investigating the brain correlates of trait emotional intelligence. Trait emotional intelligence (trait EI) is a constellation of emotion-related traits, capturing the extent to which people experience, attend to, identify, understand, regulate, and utilize their emotions and those of others. As previous studies have provided converging evidence that frontal asymmetries were one of the determinants of emotion dispositions and behaviors, and as observations on individuals with a high level of emotional intelligence parallel those on people with a left-sided frontal cortical asymmetry in nearly every respect, we hypothesized that the level of emotional intelligence might be associated with differential frontal activation. Results supported the hypothesis: the pattern of resting electroencephalographic (EEG) activation recorded in the frontal areas was significantly associated with emotional intelligence. Individuals with higher trait EI evidence greater resting left frontal activation. [less ▲]

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See detailDiversification and epidemic risks of poultry production systems in Hanoi suburb
Phan Dang, Thang; Duquesne, Brigitte ULg; Lebailly, Philippe ULg et al

in J. Sci. Dev. (2010), 8((Engl.Iss.2)), 203-215

This research aims to address this question and to improve the income of small poultry producers through identification of poultry production systems and the supply chains with their various constraints ... [more ▼]

This research aims to address this question and to improve the income of small poultry producers through identification of poultry production systems and the supply chains with their various constraints, including the diseases and to analyze the explicative factors of the poultry development at local level. The research was conducted by interviewing and production record keeping system at the household farms which have poultry production at different scales in Hanoi suburb from December 2008 to November 2009. There are four poultry production systems (1) integrated poultry production system with a good bio-safety level; (2) layer/reproductive poultry production system at the semi-commercial scale with minimal to moderate bio-safety level; (3) broiler production system at the semi-commercial scale with the low to minimal bio-safety level and; (4) backyard poultry production system with low bio-safety level. Only the chicken flocks in the system 1 and the layer/reproductive hens in the system 2 are regularly vaccinated. This research showed that farmers’ know-how is still limited, negatively affecting income and economic efficacy of the systems. In order to have sustainable development in the next years to come, it is necessary to equip farmers with good scientific knowledge or to support them to build improved poultry production systems such as a practical system for disease prevention and food safety, the HACCP. [less ▲]

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See detailPierre Alechinsky. Récit d’un itinéraire pictural
Bawin, Julie ULg

in Culture, le Magazine Culturel de l'Université de Liège (2010)

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See detailL'enseignement universitaire ouvre de nouveaux horizons aux futurs architectes
Dawans, Stéphane ULg

in Dassonville, Chantal (Ed.) Architectures, Wallonie-Bruxelles. Inventaires-Inventories 2005-2010 (2010)

Clearly, the 21st century architect can no longuer adopt the posture of a romantic artist, no more so than he can identify with the figure of demiurge that had seemed to haunt architecture for a good part ... [more ▼]

Clearly, the 21st century architect can no longuer adopt the posture of a romantic artist, no more so than he can identify with the figure of demiurge that had seemed to haunt architecture for a good part of the 20th century and that might still inspire him on occasion under the star system's influence. [less ▲]

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See detailIndividual and interacting effects of pCO2 and temperature on Emiliania huxleyi calcification: Study of the calcite production, the coccolith morphology and the coccosphere size
De Bodt, Caroline; Van Oostende, Nicolas; Harlay, Jérôme ULg et al

in Biogeosciences (2010), 7

The impact of ocean acidification and increased water temperature on marine ecosystems, in particular those involving calcifying organisms, has been gradually recognised. We examined the individual and ... [more ▼]

The impact of ocean acidification and increased water temperature on marine ecosystems, in particular those involving calcifying organisms, has been gradually recognised. We examined the individual and combined effects of increased pCO2 (180 ppm V CO2, 380 ppm V CO2 and 750 ppm V CO2 corresponding to past, present and future CO2 conditions, respectively) and temperature (13°C and 18°C) during the calcification phase of the coccolithophore E. huxleyi using batch culture experiments. We showed that the cell abundance-normalized particulate organic carbon concentration (POC) increased from the present to the future CO2 treatments. A significant effect of pCO2 and of temperature on calcification was found, manifesting itself in a lower cell abundance-normalized particulate inorganic carbon (PIC) content as well as a lower PIC:POC ratio at future CO2 levels and at 18°C. Coccosphere-sized particles showed a size reduction trend with both increasing temperature and CO2 concentration. The influence of the different treatments on coccolith morphology was studied by categorizing SEM coccolith micrographs. The number of well-formed coccoliths decreased with increasing pCO2 while temperature did not have a significant impact on coccolith morphology. No interacting effect of pCO2 and temperature was observed on calcite production, coccolith morphology or on coccosphere size. Finally, our results suggest that ocean acidification might have a larger adverse impact on coccolithophorid calcification than surface water warming. [less ▲]

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See detailShould patients under long-term anti-TNF therapies be followed for tuberculosis contamination?
Reenaers, Catherine ULg; Belaiche, Jacques ULg; Louis, Edouard ULg

in Inflammatory Bowel Diseases (2010), 16(8), 1271-2

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