References of "2007"
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See detailThe effects of sc-FOS on insulin sensitivity in obese dogs
Respondek, F.; Detilleux, Johann ULg; Wagner, A. et al

in Coenen, M.; Vervuert, I. (Eds.) Proceedings of the 11th ESVCN Congress (2007)

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See detailObservations of significant flux closure by dual lobe reconnection
Imber, S. M.; Milan, S. E.; Hubert, Benoît ULg

in Annales Geophysicae (2007), 25(7), 1617-1627

We present an interval of dual lobe reconnection during which interplanetary magnetic field lines are captured by the magnetosphere by reconnecting at high latitudes in both the Northern and the Southern ... [more ▼]

We present an interval of dual lobe reconnection during which interplanetary magnetic field lines are captured by the magnetosphere by reconnecting at high latitudes in both the Northern and the Southern Hemispheres. This event was identified using measurements of the ionospheric convection flow and observations of the aurora using the Super-DARN radars and the IMAGE spacecraft. A cusp spot, characteristic of northward IMF, is clearly visible for a 30 min period enabling the ionospheric footprint of the Northern Hemisphere merging gap to be accurately determined. During the interval a strong burst of sunward flow across the dayside open/closed field line boundary (OCB) is observed, which we interpret as the reconfiguration of the magnetosphere following a burst of reconnection. Noon-midnight and dawn-dusk keograms of the aurora show that the polar cap shrinks during the interval indicating that a large amount of flux was closed by the reconnection. Using the SuperDARN potential maps it is possible to calculate that the amount of flux closed during the interval is 0.13 GWb which represents approximately 10% of the pre-existing polar cap. The number of ions captured by the burst of dual lobe reconnection was calculated to be similar to 2.2x10(31), more than sufficient to populate a cold, dense plasma sheet. That a dense plasma sheet was not subsequently observed is discussed in terms of subsequent changes in the IMF. [less ▲]

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See detailThe bone mineralization density distribution as a fingerprint of the mineralization process
Ruffoni, Davide ULg; Fratzl, P.; Roschger, P. et al

in BONE (2007), 40(5), 1308-1319

The inhomogeneous mineral content and its topographical distribution on a microscopic scale are major determinants of the mechanical quality of trabecular bone. The kinetics of bone tissue deposition and ... [more ▼]

The inhomogeneous mineral content and its topographical distribution on a microscopic scale are major determinants of the mechanical quality of trabecular bone. The kinetics of bone tissue deposition and resorption together with the kinetics of the mineralization process determine the distribution of mineral in the tissue. The heterogeneity of the mineral content is described by the well-established bone mineralization density distribution (BMDD), which is experimentally accessible, e.g., using quantitative electron backscattering imaging (qBEI). In the present work, we demonstrate that the shape of the BMDD histogram of trabecular bone reflects directly the mineralization kinetics. Based on the experimental BMDD data of trabecular bone from healthy human adults and using a mathematical model for the remodeling and the mineralization process, the following main results were obtained. The peaked BMDD reflects necessarily a two-phase mineralization process with a fast primary phase and a slow secondary phase where the corresponding time constants differ three orders of magnitude. The obtained mineralization law, which describes the increase in the mineral content in a bone packet as a function of time, provides information not only about the initial mineralization surge, but also about the slow increase afterwards on the time scale of years. In addition to the mineralization kinetics the turnover rate of the remodeling process has a strong influence on the peak position and the shape of the BMDD. The described theoretical framework opens new possibilities for an analysis of experimentally measured BMDDs with respect to changes caused by diseases or treatments. It a] lows addressing whether changes in the BMDD have to be attributed to a variation in the turnover rate which consequently affects the density distribution or to a primary disorder in the mineralization process most likely reflecting alterations of the organic matrix. This is of important clinical interest because it helps to find therapeutic approaches directly targeting the primary etiological defects to correct the patients' BMDD towards normal BMDD. (c) 2007 Elsevier Inc. All rights reserved. [less ▲]

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See detailA Synthesis of Functional Neuroimaging in the Frontal Variant of Frontotemporal Dementia
Salmon, Eric ULg; Garraux, Gaëtan ULg; Collette, Fabienne ULg

in Current Medical Imaging Reviews (2007), 3(2), 117-121

The frontal variant of frontotemporal dementia (fvFTD) is clinically characterized by a disruption of the social behaviour. Frontotemporal decrease of activity on functional imaging is an independent ... [more ▼]

The frontal variant of frontotemporal dementia (fvFTD) is clinically characterized by a disruption of the social behaviour. Frontotemporal decrease of activity on functional imaging is an independent marker of the disease. Principal component analysis of cerebral functional images reveals one ensemble comprising both frontal lobes, and two lateralized clusters comprising temporal and subcallosal frontal regions. Executive dysfunction and verbal difficulties are shown to interact in fvFTD, and they are related to large scale frontal and temporal neural networks in the disease. The neural substrate of the memory impairments in patients with fvFTD is also heterogeneous, since correlations were observed with frontal activity, but also with medial temporal atrophy. Behavioural changes are the hallmarks of fvFTD. Apathy is consistently related to frontal involvement, while disinhibition occurs in patients with predominant posterior orbitofrontal and temporal involvement. The consequences of lateralized brain lesions remain a matter of debate, since impulsive and compulsive behaviour was evenly related to right or left temporal involvement in fvFTD. Those patients know social rules, but they are impaired in assessing the importance of social transgressions and in recognizing emotions. Processing transgressions of social norms results in a complex activation of medial prefrontal, orbitofrontal and temporal regions in control populations. The variable decrease in these regional activities observed in different fvFTD patients would explain their complex, individual social disturbance. [less ▲]

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See detailLinking flux network measurements to continental scale simulations: Ecosystem carbon dioxide exchange capacity under non-water-stressed conditions
Owen, Katherine; Tenhunen, John; Reichstein, Markus et al

in Global Change Biology (2007), 13

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See detailGlobalisation
Geuens, Geoffrey ULg

in Quaderni : la Revue de la Communication (2007), 63 ("Nouveaux mots du pouvoir. Fragments d'un abécédaire")(printemps), 51-53

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See detailUne histoire des Lumières au pays de Liège. Livre, idées, société
Droixhe, Daniel ULg

Book published by Éditions de l'Université de Liège (2007)

Voltaire n'a pas ménagé le pays de Liège. État clérical, berceau de la Fête-Dieu, la principauté était symbolisée par l'Almanach de Mathieu Laensbergh, dont les prédictions entretenaient un fatalisme ... [more ▼]

Voltaire n'a pas ménagé le pays de Liège. État clérical, berceau de la Fête-Dieu, la principauté était symbolisée par l'Almanach de Mathieu Laensbergh, dont les prédictions entretenaient un fatalisme obscurantiste. Le présent ouvrage montre une réalité plus contrastée, où s'entrecroisent industrie de la contrefaçon littéraire, séjours d'écrivains en cavale et grandes entreprises typographiques, pour former une toile de fond sur laquelle se détache une véritable révolution des mentalités. L'impulsion fut-elle donnée par la création en 1756 du Journal encyclopédique? L'imprimeur Bassompierre avait-il auparavant ouvert la voie en publiant Diderot, l'École de la volupté du matérialiste La Mettrie ou le Code de la nature, sorte de charte pré-socialiste? Le règne de Charles d'Oultremont installe-t-il une parenthèse pieuse avant qu'apparaisse en 1772 son successeur Velbruck, franc-maçon et modèle de «prince-évêque éclairé»? Telles sont quelques-unes des questions discutées ici. Figurant parmi les capitales européennes de la contrefaçon du livre, Liège et sa filiale maastrichtoise participeront aux premières tentatives d'édition des oeuvres complètes des philosophes : Voltaire (en trente-deux volumes!), Helvétius, Montesquieu, Beaumarchais, Raynal. L'imprimeur Clément Plomteux se spécialisera dans d'ambitieux projets de totalisation du savoir, dont une refonte de l'Encyclopédie. La poésie, réveillée par le long séjour qu'effectue à Liège l'écrivain Léonard, stimulera l'idéal d'une régénération de l'homme par le retour à la nature. La Société Libre d'Émulation (1779) fournira la caisse de résonance que réclamaient un puissant souci collectif de modernité et l'avènement d'une «société des talents». S'y joignirent des revendications de justice sociale qui se lisent dans la littérature des procès opposant nobles et communautés, ou dans l'Histoire des deux Indes de Raynal et Diderot. L'«embrasement inévitable» de 1789 n'était plus loin. [less ▲]

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See detailDominating Funds of Funds with Simple Hedge Fund Strategies
Gregoriou, Greg; Hübner, Georges ULg; Papageorgiou, Nicolas et al

in Journal of Derivatives and Hedge Funds (2007), 13(2), 88-106

We construct simple portfolios of hedge funds whose performance characteristics dominate those of funds of funds using three different measures: the alpha, the Sharpe ratio and the Information ratio ... [more ▼]

We construct simple portfolios of hedge funds whose performance characteristics dominate those of funds of funds using three different measures: the alpha, the Sharpe ratio and the Information ratio. Portfolios made up of non-directional funds with the highest Information ratios and/or Sharpe ratios are likely to exhibit a significant amount of persistence and continue to dominate the best funds of funds on all three performance measures. The large risk exposure of directional hedge fund strategies, however, makes them less likely to dominate funds of funds, even when combined with non-directional hedge funds strategies. Overall, these results seem to imply that the extra layer of fees paid to fund of fund managers are largely unmerited, as we can create portfolios of funds, using simple portfolio construction rules and readily available market information, that greatly outperform the best Fund of Funds. [less ▲]

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See detailLa participation du public en droit de l'urbanisme et de l'environnement
Delnoy, Michel ULg

Book published by Larcier (2007)

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See detailC. Stumpf, Renaissance de la philosophie. Quatre articles. Traduction et introduction par D. Fisette
Boccaccini, Federico ULg

in Dialogue : Canadian Philosophical Review = Dialogue : Revue Canadienne de Philosophie (2007)

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See detailPeriodic leg movements during sleep and wakefulness in narcolepsy.
Dauvilliers, Yves; Pennestri, Marie-Helene; Petit, Dominique ULg et al

in Journal of Sleep Research (2007), 16(3), 333-9

The objectives of the study were to measure the prevalence of periodic leg movements during NREM and REM sleep (PLMS) and while awake (PLMW) and to assess the impact of PLMS on nocturnal sleep and daytime ... [more ▼]

The objectives of the study were to measure the prevalence of periodic leg movements during NREM and REM sleep (PLMS) and while awake (PLMW) and to assess the impact of PLMS on nocturnal sleep and daytime functioning in patients with narcolepsy. One hundred and sixty-nine patients with narcolepsy and 116 normal controls matched for age and gender were included. Narcoleptics with high and low PLMS indices were compared to assess the impact of PLMS on sleep and Multiple Sleep Latency Test (MSLT) variables. More narcoleptics than controls had a PLMS index greater than 5 per hour of sleep (67% versus 37%) and an index greater than 10 (53% versus 21%). PLMS indices were higher both in NREM and REM sleep in narcoleptic patients, but the between-group difference was greater for REM sleep. A significant increase of PLMS index was also found with aging in both narcoleptic patients and controls. PLMW indices were also significantly higher in narcoleptic patients. Patients with an elevated index of PLMS had a higher percentage of stage 1 sleep, a lower percentage of REM sleep, a lower REM efficiency and a shorter MSLT latency. The present study demonstrates a high frequency of PLMS and PLMW in narcolepsy, an association between the presence of PLMS and measures of REM sleep and daytime functioning disruption. These results suggest that PLMS represent an intrinsic feature of narcolepsy. [less ▲]

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See detailLes cisterciens ou l’art du dépouillement. Avant-propos
George, Philippe ULg

in Joris, Freddy; Maquet, Julien (Eds.) Le Patrimoine wallon en estampes. Parcours à travers les collections de l’ancienne abbaye du Val-Dieu, éd. Fr. Joris et J. Maquet, Namur, 2007, p. 3-7. (2007)

Le sauvetage du patrimoine artistique de l'ancienne abbaye du Val-Dieu (Aubel, Belgique)

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See detailThe search for tolerant Lewis acid catalysts. Part2: enantiopure cycloalkyldialkylsilyl triflimide catalysts
Tang Zilong; Mathieu, Benoît; Tinant, Bernard et al

in Tetrahedron (2007), 63(35), 8449-8462

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See detailA Finite Volume Spatial Discretisation for taxis-diffusion-reaction systems with axi-symmetry: application to fracture healing
Gerisch, Alf; Geris, Liesbet ULg

in Deutsch, A.; Brusch, L.; Byrne, H. (Eds.) et al Advances in Mathematical Modeling of Biological Systems (2007)

We consider the numerical simulation of a time-dependent taxis-diffusion-reaction model of fracture healing in mice using the method of lines. The partial differential equation problem has an axi ... [more ▼]

We consider the numerical simulation of a time-dependent taxis-diffusion-reaction model of fracture healing in mice using the method of lines. The partial differential equation problem has an axi-symmetric structure and this is employed to properly reduce the model to an equivalent problem in two-dimensional (2D) space leading subsequently to an efficient spatial discretisation. Special care is given to respect conservation of mass and the non-negativity of the solution. The numerical simulation results are contrasted to those obtained from a simplistic reduction of the axi-symmetric model to 2D space (at the same computational cost).We observe quantitative and qualitative differences. [less ▲]

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