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See detailA Search for Escaping Water from Ceres' Poles
Rousselot, P.; Mousis, O.; Dumas, C. et al

in Asteroids, Comets, Meteors 2008 (2008)

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See detailPhotometry with FORS
Freudling, W.; Møller, P.; Patat, F. et al

in Kaufer, A. (Ed.) The 2007 ESO Instrument Calibration Workshop (2008)

Photometric calibration observations are routinely carried out with all ESO imaging cameras in every clear night. The nightly zeropoints derived from these observations are accurate to about 10%. Recently ... [more ▼]

Photometric calibration observations are routinely carried out with all ESO imaging cameras in every clear night. The nightly zeropoints derived from these observations are accurate to about 10%. Recently, we have started the FORS Absolute Photometry Project (FAP) to investigate, if and how percent-level absolute photometric accuracy can be achieved with FORS1, and how such photometric calibration can be offered to observers. We found that there are significant differences between the sky-flats and the true photometric response of the instrument which partially depend on the rotator angle. A second order correction to the sky-flat significantly improves the relative photometry within the field. We demonstrate the feasibility of percent level photometry and describe the calibrations necessary to achieve that level of accuracy. [less ▲]

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See detailModelling the Fringing of the FORS2 CCD
Walsh, J. R.; Kuntschner, H.; Jehin, Emmanuel ULg et al

in Kaufer, A. (Ed.) The 2007 ESO Instrument Calibration Workshop (2008)

Thinned CCD detectors display fringing which arises from the interference of multiply reflected light in the layers of the CCD. If the layer construction - the thicknesses and refractive indexes of the ... [more ▼]

Thinned CCD detectors display fringing which arises from the interference of multiply reflected light in the layers of the CCD. If the layer construction - the thicknesses and refractive indexes of the layers - is known, then the observed fringing can be accurately modelled and used to correct imaging and spectroscopic data for its effects. In practice the specifications on the actual deposited layer thicknesses may not be known to sufficient accuracy to predict the fringe behaviour. Thus calibration data, in the form of monochromatic flat fields, is required and can be modelled using the technique outlined by Malamuth et al. 2003, which has been applied to ACS CCDs. [less ▲]

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See detailIOT Overview: Optical Multi-Object Spectrographs
Schmidtobreick, L.; Bagnulo, S.; Jehin, Emmanuel ULg et al

in Kaufer, A. (Ed.) The 2007 ESO Instrument Calibration Workshop (2008)

We give an introduction to the several instruments that ESO operates and which are able to perform optical multi-object spectroscopy. We point out the standard ways of reducing these spectra, the problems ... [more ▼]

We give an introduction to the several instruments that ESO operates and which are able to perform optical multi-object spectroscopy. We point out the standard ways of reducing these spectra, the problems that occur, and the way we deal with them. A short introduction is given on how the quality control is performed. [less ▲]

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See detailExploiting tree-based variable importances to selectively identify relevant variables
Huynh-Thu, Vân Anh ULg; Wehenkel, Louis ULg; Geurts, Pierre ULg

in JMLR: Workshop and Conference Proceedings (2008), 4

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See detailEficacia de la gabapentina en el tratamiento del sindrome del tunel carpiano.
Taverner, Delia; Lisbona, M. Pilar; Segales, Nuria et al

in Medicina clinica (2008), 130(10), 371-3

BACKGROUND AND OBJECTIVE: To evaluate the analgesic efficacy and safety of gabapentin in the treatment of carpal tunnel syndrome (CTS), as well as the electromyographic (EMG) evolution after 6 months ... [more ▼]

BACKGROUND AND OBJECTIVE: To evaluate the analgesic efficacy and safety of gabapentin in the treatment of carpal tunnel syndrome (CTS), as well as the electromyographic (EMG) evolution after 6 months. PATIENTS AND METHOD: A prospective study with a 6-month follow-up of patients with EMG diagnosis of primary CTS starting treatment with 1.800 mg/day of gabapentin. At baseline visit and after 6 months of treatment a complete clinical evaluation and an EMG study were performed. Adverse effects of gabapentin were also registered. RESULTS: Twenty-five patients were included, mean age (standard deviation) 58.88 (7.69) years. After 6 months of treatment, a statistically significant reduction of pain (p = 0.001) and improvement of severity of symptoms (p = 0.008) were observed, although functional capacity did not change. EMG was performed in 19 patients at 6 months. Compared to baseline EMG: 52.6% patients showed no changes in EMG findings, while 5.3% patients showed improvement and in 26.3% the EMG was normal. Progression was only seen in 15.8% of patients after 6 months of treatment. In 28% of the patients gabapentin was stopped because of side effects. CONCLUSIONS: In our series, gabapentin was effective in the reduction of pain and improvement of the severity of the symptoms. Results of EMG after 6 months of treatment showed no changes, with improvement and/or remission in 84.2% of the cases. The drug was safe and well tolerated. [less ▲]

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See detailVallès au sujet de Baudelaire. Le sens du réel contre l’art pur
Durand, Pascal ULg

in Autour de Vallès : Revue de Lectures et d'Etudes Vallésiennes (2008)

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See detailComparaison du remodelage tissulaire dans l'asthme et la BPCO.
Godinas, Laurent ULg; Duquenne, Sébastien ULg; Louis, Renaud ULg

in Revue Médicale de Liège (2008), 63(2), 92-6

Asthma and COPD (chronic obstructive pulmonary disease) are two pulmonary obstructive diseases. It is well recognized that inflammation plays a key role in the pathogenesis of these two diseases. However ... [more ▼]

Asthma and COPD (chronic obstructive pulmonary disease) are two pulmonary obstructive diseases. It is well recognized that inflammation plays a key role in the pathogenesis of these two diseases. However, inflammation per se does not entirely account for the progressive loss in pulmonary function. It is admitted that the functional changes partly relate to airway structural alteration called remodeling. In this review we summarize the most frequent tissue abnormalities found in patients with asthma and COPD and report on the relationship between structural alterations and clinical features of the disease. [less ▲]

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See detailThree-dimensional analysis of oceanographic data with the software DIVA
Troupin, Charles ULg; Ouberdous, Mohamed ULg; Rixen, Michel et al

in Geophysical Research Abstracts (2008)

In oceanography, the process of gridding data is frequently used for various purposes, e.g. initialization of hydrodynamic models, or graphical representation of sparse data. DIVA (Data-Interpolating ... [more ▼]

In oceanography, the process of gridding data is frequently used for various purposes, e.g. initialization of hydrodynamic models, or graphical representation of sparse data. DIVA (Data-Interpolating Variational Analysis) is designed to perform such gridding tasks. It has the advantage of taking into account the intrinsic nature of oceanographic data, i.e. uncertainty in in situ measurements and anisotropy due to advection and irregular coastlines and topography. Three-dimensional reconstruction of temperature and salinity fields is achieved by stacking horizontal layers where independent analysis with DIVA are performed. Nevertheless, analysis in regions void of data may result in the presence of static instabilities between two or more consecutive layers. The method implemented in DIVA to remove such kinds of instabilities is the object of the present work. It consists of adding pseudo-data from one layer to the upper adjacent layer in order to create stable stratification in the vicinity of instabilities. Two approaches for assigning values to the pseudo data are tested: the first is called the mixing approach and aims at simulating a mixing process between two layers; the second is called the minimal perturbation, as it strives to minimise the perturbations inthe pseudo-data. A realistic application using temperature and salinity profiles in the North Atlantic is carried out and the results are compared with World Ocean Atlas climatologies. [less ▲]

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See detailBiological Control of Crown Rot of Bananas With Pichia Anomala Strain K And Candida Oleophila Strain O
Lassois, Ludivine ULg; De lapeyre de Bellaire, Luc; Jijakli, Haissam ULg

in Biological Control (2008), 45(3), 410-418

The antagonistic activity of two yeast strains (Pichia anomala (E.C. Hansen) Kurtzman, strain K and Candida oleophila Montrocher, strain O) against the parasitic complex responsible for banana crown rot ... [more ▼]

The antagonistic activity of two yeast strains (Pichia anomala (E.C. Hansen) Kurtzman, strain K and Candida oleophila Montrocher, strain O) against the parasitic complex responsible for banana crown rot was evaluated. The strains were applied at three different concentrations (106, 107 , 108 cfu/ml) and their efficacy tested in vivo on three separate fungi (Colletotrichum musae (Berk. & Curt.) Arx, Fusarium moniliforme Sheldon, and Cephalosporium sp.) and on a parasitic complex formed by association of these three fungi. At the concentrations used C. musae appeared to be the most pathogenic. The complex showed intermediate aggressiveness between C. musae and both other fungi. Statistically significant antagonistic effects were observed on C. musae, F. moniliforme, and the fungal complex. The highest protection level (54.4%) was observed with strain O added at 108 cfu/ml on crowns previously inoculated with the fungal complex. The level was lower when the fungi were inoculated separately. Furthermore, the antagonistic effect was strongly reinforced when strain O at 108 cfu/ml was applied 24 h before fungal complex inoculation (59.9%), as compared to its application 15 min (24.3%) or 3 h (27.3%) after fungal complex inoculation. Bananas showed increased susceptibility to the fungal complex from March to June, and this influenced the level of protection by yeast, which decreased over the same period. A strict negative correlation (R2 = 0.83) was highlighted between susceptibility of banana to crown rot and protection provided by yeast. [less ▲]

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See detailThe economic, social and ecologic impact of the tourism in the Vatra Dornei area
Petrescu, Iustinian; Burny, Philippe ULg

in Bran, Florina; Radulescu, Carmen Valentina; Ioan, Ildiko (Eds.) et al International Conference "Ecological Performance in a Competitive Economy", Bucharest 20-21 November 2008 : proceedings, volume II (2008)

The tourism can hold a decisional role in the development of an area that does not have access to remarkable economic resources and has the capacity to contribute decisively to the exploitation of ... [more ▼]

The tourism can hold a decisional role in the development of an area that does not have access to remarkable economic resources and has the capacity to contribute decisively to the exploitation of specific natural and antropic resources (mineral water, sediment, proper areals for sport or recreative activities, etc.) wich atract the touristic fluxes and lead to the apparition and development of the locality as a trousitic resort. In this context, the work aims to highlight the contribution and impact of the touristic activities to the socio-économic development of the Vatrea Dornei area [less ▲]

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See detailThe libertarian imaginary of solidarity economy
Frère, Bruno ULg

Scientific conference (2008)

This paper demonstrates the value of French pragmatist sociology, and particularly the methodological device of a ‘grammar’ to articulate the normative macro-elements that underpin the organizational ... [more ▼]

This paper demonstrates the value of French pragmatist sociology, and particularly the methodological device of a ‘grammar’ to articulate the normative macro-elements that underpin the organizational principles of the solidarity economy movement in France. Our grammatical analysis demonstrates that the loosely coupled movement is held together by a shared libertarian imaginary. We identify as its core four principles about an alternative organization of economic activity: creativity, conviviality, self-management and political activism; and we trace their historical roots in 19th century libertarian socialism and their renaissance in radical social movements in the 1970s. Analyzing the theorization of the libertarian imaginary provided by Proudhon in the 19th and movement protagonists in the 20th century, we argue that the values of the libertarian imaginary have become recombined into a composite construct of complementary, yet potentially conflicting grammatical elements. Presenting a case of a solidarity economy organization, we illustrate how organizational practices are evaluated through a grammatical lens, but also how the movement can loose its critical edge when the grammar is ‘extrapolated’. ‘Extrapolation’ offers an alternative explanation for movement instrumentalization, a frequently observed and deplored phenomenon in social movements, and suggests that it takes place not by co-optation of an external and conflicting value logic, but by over-emphasizing a value that is constitutive of the grammar itself. [less ▲]

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See detailWind quantification in urban environments
Reiter, Sigrid ULg

in Kenny, Paul; Brophy, Vivienne; Lewis, J.Owen (Eds.) Towards Zero Energy Buildings, Proceedings of the 25th Conference on Passive and Low Energy Architecture (2008)

There is today a real lack of scientific studies and simple design tools to understand wind flows around buildings. This research is based on a great number of CFD (computational fluid dynamics ... [more ▼]

There is today a real lack of scientific studies and simple design tools to understand wind flows around buildings. This research is based on a great number of CFD (computational fluid dynamics) simulations carried out with FLUENT software to evaluate wind comfort at pedestrian level. This paper describes first the wind comfort criteria chosen. It then develops the process used for validating FLUENT software for wind studies in dense urban environments by comparing our simulations results with wind tunnel tests. This validation shows that wind mean velocities around buildings can be simulated numerically with a very high degree of accuracy. Based on the results of our simulations, we developed simple graphical tools to quantify critical wind speeds around buildings. This article should thus help in practice architects and town planners to design our built environment. Moreover, this paper shows how numerical modelling is now a high-performance tool to work out useful guidelines and simple design tools for urban planners. [less ▲]

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See detailValidation Process for CFD Simulations of Wind Around Buildings
Reiter, Sigrid ULg

in Proceedings of the European Built Environment CAE Conference (2008)

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See detailProgressive encephalopathy in a child with cerebral folate deficiency syndrome.
Bonkowsky, Joshua L; RAMAEKERS, Vincent ULg; Quadros, Edward V et al

in Journal of Child Neurology (2008), 23(12), 1460-3

Cerebral folate deficiency syndrome, a recently recognized cause of developmental delay, regression, and seizures, is associated with autoantibodies against folate receptors. A female child with ... [more ▼]

Cerebral folate deficiency syndrome, a recently recognized cause of developmental delay, regression, and seizures, is associated with autoantibodies against folate receptors. A female child with developmental delay and a history of seizures who presented with seizures and unexplained coma is reported. Extensive testing to evaluate the patient's coma and subsequent developmental regression were unrevealing until the results of her cerebrospinal fluid neurotransmitter analysis returned. These showed low levels of methyltetrahydrofolate, the active metabolite of folate in the cerebrospinal fluid; subsequently, elevated titers of autoantibodies against folate receptors were found. Despite treatment with folinic acid, she developed intractable epilepsy and severe developmental delay. [less ▲]

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See detailLarge scale network and restoration of peatbogs and wetlands in Southern Belgium
Dufrêne, Marc ULg; Dierstein, Axelle; Frankard, Philippe et al

Conference (2008)

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See detailLes troubles obsessionnels-compulsifs – Obsessive-Compulsive disorders
Desseilles, Martin ULg; Mikolajczak, G.; Devue, Christel ULg et al

in Acta Psychiatrica Belgica (2008), 108(3), 29-37

Le trouble obsessionnel-compulsif (TOC) est une maladie fréquente et débilitante caractérisée par la présence d'obsessions et/ou de compulsions. Ce trouble entraîne une détresse importante tant pour la ... [more ▼]

Le trouble obsessionnel-compulsif (TOC) est une maladie fréquente et débilitante caractérisée par la présence d'obsessions et/ou de compulsions. Ce trouble entraîne une détresse importante tant pour la personne qui en souffre que pour son entourage. Le diagnostic, avant tout clinique, peut s'appuyer sur différentes échelles d'évaluation. Bien que plusieurs hypothèses étiopathogéniques existent et que différents traitements soient proposés, la physiopathologie de ce trouble reste encore largement incomprise. Le but de cette revue est de synthétiser les dernières avancées en matière de physiopathologie du TOC. [less ▲]

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See detailExperimental and numerical analysis of flow instabilities in rectangular shallow basins
Dewals, Benjamin ULg; Kantoush, Sameh; Erpicum, Sébastien ULg et al

in Environmental Fluid Mechanics (2008), 8(1), 31-54

Free surface flows in several shallow rectangular basins have been analyzed experimentally, numerically and theoretically. Different geometries, characterized by different widths and lengths, are ... [more ▼]

Free surface flows in several shallow rectangular basins have been analyzed experimentally, numerically and theoretically. Different geometries, characterized by different widths and lengths, are considered as well as different hydraulic conditions. First, the results of a series of experimental tests are briefly depicted. They reveal that, under clearly identified hydraulic and geometrical conditions, the flow pattern is found to become nonsymmetric, in spite of the symmetrical inflow conditions, outflow conditions and geometry of the basin. This non-symmetric motion results from the growth of small disturbances actually present in the experimental initial and boundary conditions. Second, numerical simulations are conducted based on a depth-averaged approach and a finite volume scheme. The simulation results reproduce the global pattern of the flow observed experimentally and succeed in predicting the stability or instability of a symmetric flow pattern for all tested configurations. Finally, an analytical study provides mathematical insights into the conditions under which the symmetric flow pattern becomes unstable and clarifies the governing physical processes. [less ▲]

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See detailDoes the self-face grab and/or retain attention? An eye movement study
Devue, Christel ULg; Van der Stigchel, Stefan; Brédart, Serge ULg et al

in Perception (2008), 37(Suppl. S), 94

Previous studies that investigated the ability of high priority stimuli to grab attention reported contradictory results. In the present study, eye tracking was used to examine the effect of the presence ... [more ▼]

Previous studies that investigated the ability of high priority stimuli to grab attention reported contradictory results. In the present study, eye tracking was used to examine the effect of the presence of the self-face among unfamiliar faces in a visual search task in which face identity was task-irrelevant. We evaluated whether the self-face (i) received prioritized selection, (ii) retained attention, and (iii) whether its status as target or distractor had a differential effect. Another highly familiar face was included to control whether possible effects were specific to the self-face or could be explained by high familiarity. We found that the presence of the self-face affected performance on the search task. This was not due to a prioritized processing but rather to a difficulty to disengage attention. Crucially, this effect seemed due to self-face familiarity. Indeed, similar results were obtained with the other familiar face. Moreover, the effect of the self-face was stronger when it was presented as the target than when it was a distractor. [less ▲]

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