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See detailParental socio-educational influence on executive measures and socio-adaptative behaviours in preschooler
Catale, Corinne ULg; Schmitz, Xavier ULg; Lejeune, Caroline ULg et al

in Books of Conference Abstract: The10th European Conference on Psychological Assessment, (2009)

The influence of educational variables on cognitive development, and particularly on the development of executive functions, remains poorly understood. In this study, we examined the parental socio ... [more ▼]

The influence of educational variables on cognitive development, and particularly on the development of executive functions, remains poorly understood. In this study, we examined the parental socio-educational influence on both executive functioning and social/emotional behaviours in preschoolers. We administered to 77 children (2 age groups: 4 and 5-year-old) divided into two educational levels (HL vs. LL, i.e. High Level vs. Low Level of parental socio-educational status) several tasks measuring different aspects of the executive functioning (cognitive flexibility, inhibition, logico-deductive reasoning, and working memory). Questionnaires were also completed by the teaching staff in order to assess the children’s social (e.g., loneliness), emotional (e.g., anxiety), and adaptative (e.g., tolerance) behaviours at school. Results reveal that children from high socio-educational status performed significantly better on some specific verbal (fluency, verbal reasoning) and non-verbal executive tasks (deductive reasoning, inhibition) than children from lower socio-educational status (ps<.05). On the other hand, no significant socio-educational effect was found for working memory and cognitive flexibility. Regarding their social, emotional, and adaptative behaviours, LL children did not significantly differ from HL children, except for the anxiety scale, in which LL children were described as less confident than their HL peers. So, our results confirm that educational variables can significantly influence the development of specific executive functions, and that this can already be observed in preschool children. On the contrary, regarding the socio-adaptative behaviours, our results indicate that the parental socio-educational status does not seem to have a significant influence on the preschoolers’ behaviour at school. [less ▲]

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See detailEvolution of the surface chemistry of carbon xerogels with very different textural properties by chemical activation and oxidation
Zubizaretta, Leire; Arenillas, A.; Pirard, Jean-Paul ULg et al

in Proceedings of the International Carbon Conference 2009 (2009)

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See detailUnderstanding of optical readout accuracy with micromechanical sensor cantilever monitored by surface plasmon resonanc
Hastanin, Juriy ULg; Renotte, Yvon ULg; Fleury-Frenette, Karl ULg et al

in Optics Communications (2009), 282

This paper reports a concept of micromechanical sensing of environmental condition using the surface plasmon resonance phenomenon. We calculate the resolution in the cantilever bending monitoring using ... [more ▼]

This paper reports a concept of micromechanical sensing of environmental condition using the surface plasmon resonance phenomenon. We calculate the resolution in the cantilever bending monitoring using the transfer matrix numerical method. We show that the cantilever deflection can be monitored with a resolution in the nanometer range. The SPs resonance behavior of the multilayer stack in the case of gold cantilever is discussed. We believe that this concept permits a low cost and ease of fabrication for a large bi-dimensional array of sensors with an enhanced signal-to-noise ratio. [less ▲]

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See detailCompte rendu de Heinz-Günther NESSELRATH (Hg.), "Platon. Kritias"
Gavray, Marc-Antoine ULg

in Antiquité Classique : Revue Interuniversitaire d'Etudes Classiques (2009), 78

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See detailNon-native variëteiten van het Nederlands: verwerving en didactiek
Rasier, Laurent ULg

Conference (2009)

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See detailL'Année sartrienne, 23
Cormann, Grégory ULg

Book (2009)

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See detailImpaired respiration discloses the physiological significance of state transitions in Chlamydomonas.
Cardol, Pierre ULg; Alric, Jean; Girard-Bascou, Jacqueline et al

in Proceedings of the National Academy of Sciences of the United States of America (2009), 106(37), 15979-84

State transitions correspond to a major regulation process for photosynthesis, whereby chlorophyll protein complexes responsible for light harvesting migrate between photosystem II and photosystem I in ... [more ▼]

State transitions correspond to a major regulation process for photosynthesis, whereby chlorophyll protein complexes responsible for light harvesting migrate between photosystem II and photosystem I in response to changes in the redox poise of the intersystem electron carriers. Here we disclose their physiological significance in Chlamydomonas reinhardtii using a genetic approach. Using single and double mutants defective for state transitions and/or mitochondrial respiration, we show that photosynthetic growth, and therefore biomass production, critically depends on state transitions in respiratory-defective conditions. When extra ATP cannot be provided by respiration, enhanced photosystem I turnover elicited by transition to state 2 is required for photosynthetic activity. Concomitant impairment of state transitions and respiration decreases the overall yield of photosynthesis, ultimately leading to reduced fitness. We thus provide experimental evidence that the combined energetic contributions of state transitions and respiration are required for efficient carbon assimilation in this alga. [less ▲]

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See detailMATISSE Science Cases
Wolf, S.; Lopez, B.; Jaffe, W. et al

in Moorwood, A. (Ed.) Science with the VLT in the ELT Era (2009)

MATISSE is foreseen as a mid-infrared spectro-interferometric instrument combining the beams of up to four UTs/ATs of the Very Large Telescope Interferometer (VLTI). MATISSE will measure closure phase ... [more ▼]

MATISSE is foreseen as a mid-infrared spectro-interferometric instrument combining the beams of up to four UTs/ATs of the Very Large Telescope Interferometer (VLTI). MATISSE will measure closure phase relations and thus offer an efficient capability for image reconstruction. In addition to this, MATISSE will open 2 new observing windows at the VLTI: the L and M band in addition to the N band. Furthermore, the instrument will offer the possibility to perform simultaneous observations in separate bands. MATISSE will also provide several spectroscopic modes. In summary, MATISSE can be seen as a successor of MIDI by providing imaging capabilities in the mid-infrared domain (for a more detailed description of MATISSE see Lopez et al., these proceedings). [less ▲]

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See detailHerpesviruses in respiratory liquids of horses : putative implication in airway inflammation and association with cytological features
Fortier, Guillaume ULg; Van Erck, Emmanuelle ULg; Fortier, Christine et al

in Veterinary Microbiology (2009), 139

The objectives of this study were to estimate the prevalence and the potential role of equine herpesviruses (EHVs) detection in both bronchoalveolar lavage (BAL) and tracheal wash (TW). The population ... [more ▼]

The objectives of this study were to estimate the prevalence and the potential role of equine herpesviruses (EHVs) detection in both bronchoalveolar lavage (BAL) and tracheal wash (TW). The population included a control group (CTL; 37 TW and 25 BAL) and a pathological group (PAT; 259 TW and 387 BAL), including horses either suffering from respiratory diseases including syndrome of tracheal inflammation, inflammatory airway disease, recurrent airway obstruction, or submitted to respiratory investigation because of exercise intolerance or poor performance. Each respiratory liquid was submitted to a standardised cytological analysis, mentioning the morphological abnormalities of exfoliated epithelial cells (ECAb) and ciliocytophthoria (CCPh) as markers of potential viral infection, as well as PCR assays including a consensus PCR and virus-specific PCR for both equine alphaherpesviruses (EHV-1; EHV-4) and gammaherpesviruses (EHV-2; EHV-5). The EHV infections were more prevalent in the TW of PAT group (P = 0.004), with the highest prevalence being for EHV-2 (P = 0.006). The EHV detection in BALs was not significantly different between groups. The EHVs detection in TW was correlated to the polymorphonuclear neutrophil (PMN) counts in the respiratory liquid but not with CCPh or ECAb. CCPh or ECAb were associated with both consensus PCR and EHV-2 and EHV-5 virus-type PCR in the BAL only. The significant detection of EHVs in the TWof PAT group in association with the PMN increased counts could lead to further investigations about their putative role in equine syndrome of tracheal inflammation [less ▲]

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See detailThéâtralité de la mémoire
Delhalle, Nancy ULg

in Cahiers Internationaux de Symbolisme (2009), 122-123-124

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See detailCellular source and amount of vascular endothelial growth factor and platelet-derived growth factor in tumors determine response to angiogenesis inhibitors.
Sennino, Barbara; Kuhnert, Frank; Tabruyn, Sébastien ULg et al

in Cancer Research (2009), 69(10), 4527-36

Vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF), and their receptors are important targets in cancer therapy based on angiogenesis inhibition. However, it is unclear ... [more ▼]

Vascular endothelial growth factor (VEGF), platelet-derived growth factor (PDGF), and their receptors are important targets in cancer therapy based on angiogenesis inhibition. However, it is unclear whether inhibition of VEGF and PDGF together is more effective than inhibition of either one alone. Here, we used two contrasting tumor models to compare the effects of inhibiting VEGF or PDGF alone, by adenovirally generated soluble receptors, to the effects of inhibiting both together. In RIP-Tag2 tumors, VEGF and PDGF inhibition together reduced tumor vascularity and abundance of pericytes. However, VEGF inhibition reduced tumor vascularity without decreasing pericyte density, and PDGF inhibition reduced pericytes without reducing tumor vascularity. By contrast, in Lewis lung carcinomas (LLC), inhibition of VEGF or PDGF reduced blood vessels and pericytes to the same extent as did inhibition of both together. Similar results were obtained using tyrosine kinase inhibitors AG-013736 and imatinib. In LLC, VEGF expression was largely restricted to pericytes and PDGF was largely restricted to endothelial cells, but, in RIP-Tag2 tumors, expression of both growth factors was more widespread and significantly greater than in LLC. These findings suggest that inhibition of PDGF in LLC reduced pericytes, and then tumor vessels regressed because pericytes were the main source of VEGF. The vasculature of RIP-Tag2 tumors, in which most VEGF is from tumor cells, was more resistant to PDGF inhibition. The findings emphasize the interdependence of pericytes and endothelial cells in tumors and the importance of tumor phenotype in determining the cellular effects of VEGF and PDGF inhibitors on tumor vessels. [less ▲]

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See detailThe chick embryo as a model to study persistent effects of embryonic protein-undernutrition on postnatal growth and metabolism
Everaert, Nadia ULg; Métayer-Coustard, S.; Willemsen, H. et al

Conference (2009)

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See detailInternet et la reconfiguration de l’espace public tunisien : le rôle de la diaspora
Lecomte, Romain ULg

in tic&société (2009), 3(1-2),

Using a sociological approach, we show how Tunisians of the diaspora take advantage of Internet to keep themselves involved and informed and to denounce what they consider as unjust in their native ... [more ▼]

Using a sociological approach, we show how Tunisians of the diaspora take advantage of Internet to keep themselves involved and informed and to denounce what they consider as unjust in their native country. We describe the style of critical speech preferred by these activist Internet users and the type of public sphere they claim. We study the activist paths of some of them and analyse their relationships with Internet users living in Tunisia. While they are initially less likely to openly denounce (use of indirect criticism) the authoritarian regime, we illustrate how these Internet users in Tunisia come to play an increasingly important role in this new space of contestation. [less ▲]

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See detailLa traduction dans l'antiquité
Rochette, Bruno ULg

Article for general public (2009)

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See detailDe novo interstitial duplication 4q associated with sporadic young-onset dopa-responsive parkinsonism
Garraux, Gaëtan ULg; VANBELLINGHEN, Jean-François ULg; JAMAR, Mauricette ULg et al

in Movement Disorders : Official Journal of the Movement Disorder Society (2009), 24(Suppl. 1), 138-139

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See detailIntroduction au débat "Le lait, les agriculteurs, l'Europe"
Burny, Philippe ULg

Scientific conference (2009)

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See detailEarly identification of inner pillar cells during rat cochlear development.
Thelen, Nicolas ULg; Breuskin, Ingrid ULg; Malgrange, Brigitte ULg et al

in Cell & Tissue Research (2009), 337(1), 1-14

Although the structure of the auditory organ in mature mammals, the organ of Corti, is clearly established, its development is far from being elucidated. Here, we examine its spatio-temporal development ... [more ▼]

Although the structure of the auditory organ in mature mammals, the organ of Corti, is clearly established, its development is far from being elucidated. Here, we examine its spatio-temporal development in rats from embryonic day 16 (E16) to E19 by using cytochemical and immunocytochemical methods at the light- and electron-microscope levels. We demonstrate that the organ of Corti develops from a non-proliferating cell zone that is located in the junctional region between two edges of the dorsal epithelium of the cochlear duct. We also reveal that the first cells to develop in this zone are the inner pillar cells, a particular type of non-sensory supporting cell, which arise in the base of the cochlear duct at the boundary between the two ridges at E16. Cell differentiation in this prosensory region continues according to a base-to-apex gradient; the inner hair cells appear in the greater epithelial ridge at E17 and the outer hair cells in the lesser epithelial ridge at E18. At E19, the various cell types of the organ of Corti are in place. Finally, we show that unlike the development of all the supporting cell types of the organ of Corti, the development of inner pillar cells within the prosensory domain seems not to involve Notch1 activation. These results highlight the central role that the inner pillar cells probably play in the development of the organ of Corti. [less ▲]

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See detailMédiatiser ou médi-attiser le crime?
Dantinne, Michaël ULg

in Revue de la Faculté de Droit de l'Université de Liège (2009), 2

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See detailLes thrombopénies induites par l'héparine (TIH)
Baccus, Christine ULg; Hans, Pol ULg; Brichant, Jean-François ULg

in Revue Médicale de Liège (2009), 64(9), 450-456

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