References of "2007"
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See detailNew evidence for a non-cofactor role of thiamine phosphate derivatives
Bettendorff, Lucien ULg

Scientific conference (2007)

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See detailOtage(s)
Durand, Pascal ULg

in Durand, Pascal (Ed.) Les Nouveaux Mots du Pouvoir. Abécédaire critique (2007)

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See detailInterface-croquis pour relevés architecturaux: vers la constitution d'une nouvelle activité
Safin, Stéphane ULg; Pecceu, S.; Leclercq, Pierre ULg

in Agon, C.; Delerue, O. (Eds.) Proceedings of the 19th International Conference of the Association Francophone d'Interaction Homme-Machine, IHM (2007)

This article is the synthesis of the ICC research project, aiming at the development of a multimodal and portable interface supporting in real time scale setting of an architectural measurement sketch ... [more ▼]

This article is the synthesis of the ICC research project, aiming at the development of a multimodal and portable interface supporting in real time scale setting of an architectural measurement sketch. Based on a participative process, we first expose and make a model of the traditional activities of measure taking and scale setting. We then describe the ICC software and show how the retooled activity changes, taking into account the help functions it brings. We describe the new structure of measurement activity with scale setting, the new drawing modes it induces. We conclude proposing some tracks for the software improvement. [less ▲]

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See detailInfluence of Soil Suction on Trench Stability
Tomboy, Olivier; Whenham, Valérie; De Vos, Monika et al

in Proc. of the 14th European Conference on Soil Mechanics and Geotechnical Engineering, Vol 2 (2007)

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See detailAccuracy of size distributions obtained from single particle static digital image analysis.
Gregoire, Max; Dislaire, Godefroid; Pirard, Eric ULg

in Proceedings PARTEC2007 (2007)

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See detailThe systemic resistance induced in tomato by a non-pathogenic Pseudomonas strain is associated with the stimulation of the lipoxygenase pathway
Adam, Akram; Duby, Franceline ULg; Ongena, MARC ULg et al

in Bulletin OILB/SROP = IOBC/WPRS Bulletin (2007), 30

Root treatment by the non-pathogenic Pseudomonas putida strain BTP1 reduced by 34% the disease caused by Botrytis cinerea on tomato leaves. This induced systemic resistance phenomenon is associated both ... [more ▼]

Root treatment by the non-pathogenic Pseudomonas putida strain BTP1 reduced by 34% the disease caused by Botrytis cinerea on tomato leaves. This induced systemic resistance phenomenon is associated both with the accumulation of fungitoxic material and with the stimulation of the lipoxygenase pathway in infected leaves. More precisely, we observed a consistent change in the expression of a new tomloxF gene in the leaves from BTP1-treated plants as far as the pathogen is introduced. This suggests that the roots were primed and reacted locally to colonization by bacteria and that defense-related gene expression is turned on systemically upon pathogen perception [less ▲]

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See detailCharlotte Joulia
Tomasovic, Dick ULg

in Aubenas, Jacqueline (Ed.) Filmer la danse (2007)

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See detailSteady state and (bi-) stability evaluation of simple protease signalling networks
Eissing, Thomas; Waldherr, Steffen; Allgöwer, Frank et al

in Biosystems (2007), 90(3), 591-601

Signal transduction networks are complex, as are their mathematical models. Gaining a deeper understanding requires a system analysis. Important aspects are the number, location and stability of steady ... [more ▼]

Signal transduction networks are complex, as are their mathematical models. Gaining a deeper understanding requires a system analysis. Important aspects are the number, location and stability of steady states. In particular, bistability has been recognised as an important feature to achieve molecular switching. This paper compares different model structures and analysis methods particularly useful for bistability analysis. The biological applications include proteolytic cascades as, for example, encountered in the apoptotic signalling pathway or in the blood clotting system. We compare three model structures containing zero-order, inhibitor and cooperative ultrasensitive reactions, all known to achieve bistability. The combination of phase plane and bifurcation analysis provides an illustrative and comprehensive understanding of how bistability can be achieved and indicates how robust this behaviour is. Experimentally, some so-called "inactive" components were shown to have a residual activity. This has been mostly ignored in mathematical models. Our analysis reveals that bistability is only mildly affected in the case of zero-order or inhibitor ultrasensitivity. However, the case where bistability is achieved by cooperative ultrasensitivity is severely affected by this perturbation. (c) 2007 Elsevier Ireland Ltd. All rights reserved. [less ▲]

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See detailWithin-Population Genetic Structure And Clonal Diversity Of A Threatened Endemic Metallophyte, Viola Calaminaria (Violaceae)
Bizoux, Jean-Philippe ULg; Mahy, Grégory ULg

in American Journal of Botany (2007), 94(5), 887-895

We studied the within-population genetic structure and the clonality extent of Viola calaminaria, a rare endemic species of calamine soils, by means of RAPD markers in two populations (one recent and one ... [more ▼]

We studied the within-population genetic structure and the clonality extent of Viola calaminaria, a rare endemic species of calamine soils, by means of RAPD markers in two populations (one recent and one ancient) with expected harsh and heterogeneous heavy-metal stress. At a very local scale (0.2 3 m), clonal propagation was detected in both populations, but the levels of clonal diversity were high (number of genets/number of ramets sampled ¼ 0.9 [recent] and 0.76 [ancient]) and the maximal observed extension of the clones was 0.4 m. This indicated that clonality is not, for the species, an important mode of propagation and that clonal growth cannot be interpreted as a strategy for propagating or perpetuating adapted genotypes under harsh ecological constraints. Spatial autocorrelations revealed a significant (P , 0.001) negative value of correlogram slope in the two populations even when a single individual per clone was considered (i.e., analysis at the genet level). We conclude that spatial genetic structure at a very local scale reflects limited gene flow due to restricted seed dispersal rather than variation in clonal pattern in response to environmental heterogeneity. At a larger scale (2–30 m), spatial autocorrelations revealed a positive (P , < 0.001) correlation at , 3 m and a random pattern at larger distances for the two populations. This suggested a patchy distribution of the genetically linked individuals associated with a disrupted pattern at a longer distance probably due to gene flow by pollen dispersal and a seed bank effect. The implications for the conservation of V. calaminaria are discussed. [less ▲]

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See detailEl intelectual y el artista: diálogo de lecturas Victoria Ocampo – Pierre Drieu la Rochelle
Willson, Patricia ULg

in Hispamérica : revista de literatura (2007), (108), 17-30

This article lays down a parallel between the conceptions of literature and the writer sustained by Victoria Ocampo and Pierre Drieu la Rochelle. Apart from delving into some aspects of the friendship ... [more ▼]

This article lays down a parallel between the conceptions of literature and the writer sustained by Victoria Ocampo and Pierre Drieu la Rochelle. Apart from delving into some aspects of the friendship that brought them together (interrupted by the growing Fascist sympathies of Drieu), the figures of the intellectual and the artist are examined as they appear in their corresponding testimonial works. [less ▲]

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See detailDesigning a linear pension scheme with forced savings and wage heterogeneity
Cremer, Helmuth; De Donder, Philippe; Maldonado, Dario et al

in International Tax and Public Finance (2007)

This paper studies the optimal linear pension scheme when society consists of rational and myopic individuals. Myopic individuals have, ex ante, a strong preference for the present even though, ex post ... [more ▼]

This paper studies the optimal linear pension scheme when society consists of rational and myopic individuals. Myopic individuals have, ex ante, a strong preference for the present even though, ex post, they would regret not to have saved enough. While rational and myopic persons share the same ex post intertemporal preferences, only the rational agents make their savings and labor supply decisions according to these preferences. Individuals are also distinguished by their productivity. The social objective is “paternalistic”: the utilitarian welfare function depends on ex post utilities. We examine how the presence of myopic individuals affects both the size of the pension system and the degree of redistribution it operates, with and without liquidity constraints. The relationship between proportion of myopic individuals and characteristics of the pension system turns out to be much more complex than one would have conjectured. Neither the impact on the level of pensions nor the effect on their redistributive degree is unambiguous. Nevertheless, we show that under some plausible assumptions adding myopic individuals increases the level of pension benefits and leads to a shift from a flat or even targeted scheme to a partially contributory one. However, we also provide an example where the degree of redistribution is not a monotonic function of the proportion of myopic individuals. [less ▲]

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See detailRelationship between progesterone and pregnancy-associated glycoprotein concentrations in the maternal circulation during early pregnancy in dairy cows.
Barbato, O.; Merlo, M.; Melo de Sousa, Noelita ULg et al

in Proceedings of the 23rd Scientific Meeting of the European Embryo Transfer Association (2007)

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See detailLe neutre chez Blanchot et le minimalisme américain
Hagelstein, Maud ULg

in Espace Maurice Blanchot (2007)

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See detailKarsts des craies et calcarénites de la Montagne Saint-Pierre (Basse Meuse liégeoise)
Willems, Luc ULg; Rodet, Joël; Ek, Camille ULg et al

in Bulletin des Chercheurs de la Wallonie (2007), XLVI

The “Montagne Saint-Pierre” (Sint Pietersberg) is a separate part of the Hesbaye plateau, isolated between the lower valleys of the Geer and the Meuse rivers. It is exploited by a big open-air quarry and ... [more ▼]

The “Montagne Saint-Pierre” (Sint Pietersberg) is a separate part of the Hesbaye plateau, isolated between the lower valleys of the Geer and the Meuse rivers. It is exploited by a big open-air quarry and by numerous underground quarries developing galleries on hundreds of kilometers long. Excavated in Cretaceous chalk and calcarenite, these artificial networks allow an exceptional 3-D observation of karsts inside a very porous and permeable rock, less favourable to a concentrated solution. The most numerous of them are “organ pipes” or “earth pipes”. They are vertical tubular solution pipes that may exceed 60 m in depth. Sponge networks and subhorizontal caves occur, without any visible connection with fracturation. Finally, downwards to at least 20 m below the alluvial plain of the Meuse river, pluridecametric nodes of weathered chalk are found. By their size and rounded morphology, the nodes resemble to the natural caves occurring in the calcarenite and intersected by the underground quarries. All the studied karsts allow us to propose a scenario for the genesis of a polyphase karst system. Independently of surface conditions, caves are generated deeply in the phreatic zone (endokarsts). During the downcutting of theMeuse valley, and related to the fluvial terraces, solution pipes (input karsts) are generated. Due to the valley incision and to the lowering of the aquifer,theses solution pipes progress downward and cut the endokarsts. A concentrated water circulation takes place. In the dewatered upper part of the system, caves cut by solution pipes are rapidly filled by superficial deposits. The high porosity of the calcarenite makes it comparable to a sponge. The rock absorbs quickly the out-flows coming from the surface and causes a rapid deposit of the fine particles transported inside horizontal passages. The sealing of these conduits allows their conservation inside a very crumbly rock. [less ▲]

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See detailBrain responses to violet, blue, and green monochromatic light exposures in humans: prominent role of blue light and the brainstem
Vandewalle, Gilles ULg; Schmidt, Christina ULg; Albouy, Geneviève ULg et al

in PLoS ONE (2007), 2(11), 1247

BACKGROUND: Relatively long duration retinal light exposure elicits nonvisual responses in humans, including modulation of alertness and cognition. These responses are thought to be mediated in part by ... [more ▼]

BACKGROUND: Relatively long duration retinal light exposure elicits nonvisual responses in humans, including modulation of alertness and cognition. These responses are thought to be mediated in part by melanopsin-expressing retinal ganglion cells which are more sensitive to blue light than violet or green light. The contribution of the melanopsin system and the brain mechanisms involved in the establishment of such responses to light remain to be established. METHODOLOGY/PRINCIPAL FINDINGS: We exposed 15 participants to short duration (50 s) monochromatic violet (430 nm), blue (473 nm), and green (527 nm) light exposures of equal photon flux (10(13)ph/cm(2)/s) while they were performing a working memory task in fMRI. At light onset, blue light, as compared to green light, increased activity in the left hippocampus, left thalamus, and right amygdala. During the task, blue light, as compared to violet light, increased activity in the left middle frontal gyrus, left thalamus and a bilateral area of the brainstem consistent with activation of the locus coeruleus. CONCLUSION/SIGNIFICANCE: These results support a prominent contribution of melanopsin-expressing retinal ganglion cells to brain responses to light within the very first seconds of an exposure. The results also demonstrate the implication of the brainstem in mediating these responses in humans and speak for a broad involvement of light in the regulation of brain function. [less ▲]

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See detailFactors explaining variation in serum dioxin concentrations for the specific congeners in the French dioxin and incinerators study
Zeghnoun, A.; Frery, N.; Volatier, J. L. et al

in Organohalogen Compounds (2007), 69

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See detailHorizontal Evaluation Method for the Implementation of the Construction Products Directive (HEMICPD)
Lor, Marc; Vause, Kevin; Dinne, Karla et al

Poster (2007)

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See detailAn asteroseismic study of the β cephei star θ ophiuchi : constraints on global stellar parameters and core overshooting
Briquet, Maryline ULg; Morel, Thierry ULg; Thoul, Anne ULg et al

in Monthly Notices of the Royal Astronomical Society (2007), 381(4), 1482-1488

We present a seismic study of the beta Cephei star theta Ophiuchi. Our analysis is based on the observation of one radial mode, one rotationally split l = 1 triplet and three components of a rotationally ... [more ▼]

We present a seismic study of the beta Cephei star theta Ophiuchi. Our analysis is based on the observation of one radial mode, one rotationally split l = 1 triplet and three components of a rotationally split l = 2 quintuplet for which the m values were well identified by spectroscopy. We identify the radial mode as fundamental, the triplet as p(1) and the quintuplet as g(1). Our non-local thermodynamic equilibrium abundance analysis results in a metallicity and CNO abundances in full agreement with the most recent updated solar values. With X epsilon [0.71, 0.7211] and Z epsilon [0.009, 0.015], and using the Asplund et al. mixture but with a Ne abundance about 0.3 dex larger, the matching of the three independent modes enables us to deduce constrained ranges for the mass (M = 8.2 +/- 0.3 M circle dot) and central hydrogen abundance (X-c = 0.38 +/- 0.02) of theta Oph and to prove the occurrence of core overshooting (alpha(ov) = 0.44 +/- 0.07). We also derive an equatorial rotation velocity of 29 +/- 7 km s(-1). Moreover, we show that the observed non-equidistance of the l = 1 triplet can be reproduced by the second-order effects of rotation. Finally, we show that the observed rotational splitting of two modes cannot rule out a rigid rotation model. [less ▲]

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See detailEtude de l’impact de l’activité de la pêche artisanale et de l’effet de gestion sur les populations d’Epinephelus marginatus (Lowe 1834) dans le périmètre de la Réserve Naturelle des Bouches de Bonifacio
Garrido, Marie ULg

Master of advanced studies dissertation (2007)

L’objectif de cette étude est de mettre en évidence l’impact du filet trémail et de la palangre concernant la pêche professionnelle sur le mérou brun Epinephelus marginatus (Lowe, 1834) dans la Réserve ... [more ▼]

L’objectif de cette étude est de mettre en évidence l’impact du filet trémail et de la palangre concernant la pêche professionnelle sur le mérou brun Epinephelus marginatus (Lowe, 1834) dans la Réserve Naturelle des Bouches de Bonifacio. C’est à l’aide de la base de données, représentée par des fiches de pêche de 1992 à 2006, que ce travail a pu être réalisé. Les données acquises ont été analysées au moyen du logiciel «Statistica». Afin d’évaluer les différences significatives entre les moyennes des Captures Par Unité d’Effort en fonction de diverses variables. Considérant qu’une palangre est constituée de 104 hameçons (moyenne de l’échantillonnage), on estime la rentabilité moyenne journalière de cet engin à 1560 grammes de mérous. Or la rentabilité moyenne quotidienne d’un filet trémail est de 820 grammes de mérous, pour une longueur moyenne de 1640 mètres dans la RNBB. Malgré l’augmentation progressive de la population d’E. marginatus (taux capture en augmentation de 55% en 2004-2006), l’impact de la pêche à la palangre pourrait se révéler non négligeable, si elle n’était pas réglementée. Les CPUE, en termes de biomasse, sont plus importantes d’années en années, ce qui semble témoigner de la bonne santé de la pêche dans l’extrême sud de la Corse grâce à une gestion durable des stocks. [less ▲]

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