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See detailImpacts of ice sheet mask and resolution on estimating the surface mass balance of the Greenland ice sheet
Fettweis, Xavier ULg

Poster (2008, April 15)

The impacts of the spatial resolution and a Greenland ice sheet (GrIS) mask on modelling the Surface Mass Balance (SMB) are studied with the regional climate model MAR coupled with a complex energy ... [more ▼]

The impacts of the spatial resolution and a Greenland ice sheet (GrIS) mask on modelling the Surface Mass Balance (SMB) are studied with the regional climate model MAR coupled with a complex energy balance/snowpack model. On the one hand, too coarse resolution prevents the model from resolving adequately the steep ice sheet margin and the ablation zone, not wider than 100 km in Greenland, where substantial seasonal melting occurs. The resolution affects also the precipitation modelling. On the other hand, a too large ice sheet mask (i.e. with low-altitude ice pixels in the model, where there is no ice in reality) leads to an overestimation of the run-off. In addition, due to the albedo feedback, biases in the ice sheet mask have also consequences on the surface energy balance. [less ▲]

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See detailPolyomavirus in Renal Transplantation: A Hot Problem
Bonvoisin, Catherine ULg; Weekers, Laurent ULg; Xhignesse, Patricia ULg et al

in Transplantation (2008), 85(7S), 42-48

Polyomavirus BK has emerged as an important complication after kidney transplantation. Although, BK nephropathy develops in only1%to5%of renal transplant recipients, its prognosis when present is very ... [more ▼]

Polyomavirus BK has emerged as an important complication after kidney transplantation. Although, BK nephropathy develops in only1%to5%of renal transplant recipients, its prognosis when present is very poor. The most accepted risk factor is the level of immunosuppressive treatment, but the serostatus of donor and recipient and the absence of human leukocyte antigen C7 in donor and/or recipient influence the BK virus (BKV) reactivation. The gold standard in diagnosing BKV nephropathy (BKVN) continues to be biopsy with use of immunohistochemistry for large T antigens. Urinary decoy cells and blood BKV DNA polymerase chain reaction are used in the screening, but their positive predictive values are poor. However, their use as predictors of the evolution of BKVN is more valuable. The reduction of immunosuppressive therapy currently represents the first-line treatment for BKVN. Cidofovir and leflunomide can be used when BKVN continues to progress. In the event of graft loss, retransplantation is possible with a low risk of recurrence when the infection is no longer active. [less ▲]

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See detailCaractérisation phénotypique et gestion de la population de poulets locaux dans les communes de Dassa et de Toffo au Bénin
Chabi Toko, Roukayath ULg

Master of advanced studies dissertation (2008)

Morphometrical and morphological characters of 663 local chickens and management technique, production and breeding aims of 97 breeders were studied in Dassa and Toffo district in Benin. Different ... [more ▼]

Morphometrical and morphological characters of 663 local chickens and management technique, production and breeding aims of 97 breeders were studied in Dassa and Toffo district in Benin. Different phenotypes were identified in the study area: the chicken with normal feathering, the naked neck, the frizzle feathered the soft feathering and the polydactyl. Feather colour of local poultry is variable but the partridge (18.55 %), the black (12.52 %), the light brown (9.05 %) and the brown (8.13 %) are dominants. The comb is predominantly with a simple type (99 %) and essentially the pink (59.58 %) and light pink (29.26 %) colour are encountered. The ear lobes are pink (45.40 %) and white (36.80 %). The beak colour goes from white (0.3 %) through yellow (9.61 %) and black (27.45 %) to brown (40.27 %). The skin is essentially pink, light pink but legs are white and grey. Eyes are most orange (70.14 %) and brownish (27.75 %). The two sexes were not significantly different for body measurements. The hen weighs 773.04 g ± 322.71 and the coq 745.84 g ± 353.7. The region had an effect on body measurements because Dassa’s chickens had average value globally higher than the one in Toffo. Correlation coefficients between body live weight and the other body linear measurements were high and significant. Three groups of chicken emerge: those with yellow beak and those with black beak met in Dassa district and those with cream beak and diverse feathers colour observed in Toffo district. Results also show that 52.58 % of chicken breeders are female and for 71.13 % of them, poultry contributes about 40-100 % to their annual income. The breeders in Toffo had a higher chicken stock and this supports the hypothesis that “lower land owners keep more chickens”. Chicken are raised for rituals uses, market and consumption. Local chicken are appreciated for two purposes: eggs and meat production. The selection criteria are based on the hen’s prolificity and its live weight. Hens reached their sexual maturity between 24 and 26 weeks of age. [less ▲]

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See detailRéformer le budget, changer l'Europe
Gangloff, Camille; Grandjean, Geoffrey ULg; Mancini, Francesca et al

Report (2008)

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

Poster (2008, April 13)

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See detailOn-line respiratory mechanics in newborns: stability and effect of ventilatory mode.
Rigo, Vincent ULg; Rigo, Jacques ULg

in Berger, Th. (Ed.) 9th EPNV Final Program and Abstracts (2008, April 11)

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See detailEffets de la qualité des données sur la courbe d'apprentissage des forêts aléatoires
Brostaux, Yves ULg

Scientific conference (2008, April 11)

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See detailScreening for chronic kidney disease and other associated risk factors in rural congolese oil company in the Democratic Republic of Congo (DRC).
Sumaili, Ernest; Zinga, Chantal; Nseka, Nazaire et al

Poster (2008, April 10)

This study indicates that CKD and traditional risk factors for CKD are very prevalent in this rural Oil Company. Screenings for these conditions are thus imperative to put high on the health agenda ... [more ▼]

This study indicates that CKD and traditional risk factors for CKD are very prevalent in this rural Oil Company. Screenings for these conditions are thus imperative to put high on the health agenda. Additional studies are needed of the causes of CKD in this company and probably in other areas of the DRC. [less ▲]

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See detailSynthesis of novel functional aliphatic polyesters by association of ring-opening polymerization and click chemistry
Lecomte, Philippe ULg; Schmeits, Stephanie ULg; Riva, Raphaël ULg et al

Conference (2008, April 09)

Nowadays, biodegradable and biocompatible aliphatic polyesters are widely used as environmentally friendly thermoplastics and biomaterials. Nevertheless, the absence of any functional group along the ... [more ▼]

Nowadays, biodegradable and biocompatible aliphatic polyesters are widely used as environmentally friendly thermoplastics and biomaterials. Nevertheless, the absence of any functional group along the chain is a severe limitation for the development of new applications. Very recently, it was reported by Emrick et al. and by us that copper(I)-mediated 1,3-dipolar Huisgen's cycloaddition of alkynes and azides, the most widely used “click” reaction in the frame of macromolecular engineering, is very efficient to derivatize aliphatic polyesters. Due to the tolerance for many functional groups, cumbersome protection and deprotection steps are not needed. One main advantage of copper(I)-mediated Huisgen's cycloaddition compared to other reactions previously used to derivatize aliphatic polyesters relies on the mildness of the experimental conditions, which results in limited degradation. Our most recent results dealing with the combination of “click” chemistry and ring-opening polymerization towards functional PCL and PLA, networks, graft and hyperbranched copolymers will be highlighted. [less ▲]

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See detailIntroduction: "L'évaluation sensorielle: une science à part entière"
Blecker, Christophe ULg

Conference given outside the academic context (2008)

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See detailApproche sensorielle de la texture des aliments
Blecker, Christophe ULg

Conference given outside the academic context (2008)

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See detailDIVA-4.2.1: presentation of the new features
Troupin, Charles ULg; Machín, Francisco; Ouberdous, Mohamed ULg et al

Poster (2008, April 03)

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See detailLivres, Internet, sciences humaines
Donneau, Olivier ULg

in COnTEXTES : Revue de Sociologie de la Littérature (2008)

Some remarks on the ambiguous attitude of the scholars in art and humanities towards books and electronics

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See detailPredicting bovine milk urea concentration for future test-day records in a management perspective
Bastin, Catherine ULg; Laloux, Laurent; Bertozzi, Carlo et al

Conference (2008, April 02)

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See detailNotes et remarques à propos de Jérôme MEIZOZ, Postures littéraires. Mises en scène modernes de l’auteur.
Stienon, Valérie ULg

in COnTEXTES : Revue de Sociologie de la Littérature (2008)

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See detailNitrogen enrichment, boron depletion and magnetic fields in slowly-rotating B-type dwarfs
Morel, Thierry ULg; Hubrig, S.; Briquet, Maryline ULg

in Astronomy and Astrophysics (2008), 481

Evolutionary models for massive stars, accounting for rotational mixing effects, do not predict any core-processed material at the surface of B dwarfs with low rotational velocities. Contrary to ... [more ▼]

Evolutionary models for massive stars, accounting for rotational mixing effects, do not predict any core-processed material at the surface of B dwarfs with low rotational velocities. Contrary to theoretical expectations, we present a detailed and fully-homogeneous, NLTE abundance analysis of 20 early B-type dwarfs and (sub)giants that reveals the existence of a population of nitrogen-rich and boron-depleted, yet intrinsically slowly-rotating objects. The low-rotation rate of several of these stars is firmly established, either from the occurrence of phase-locked UV wind line-profile variations, which can be ascribed to rotational modulation, or from theoretical modelling in the pulsating variables. The observational data presently available suggest a higher incidence of chemical peculiarities in stars with a (weak) detected magnetic field. This opens the possibility that magnetic phenomena are important in altering the photospheric abundances of early B dwarfs, even for surface field strengths at the one hundred Gauss level. However, further spectropolarimetric observations are needed to assess the validity of this hypothesis. [less ▲]

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See detailOfficine et Prévention
Mairiaux, Philippe ULg

Article for general public (2008)

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See detailOGLE-TR-211 - a new transiting inflated hot Jupiter from the OGLE survey and ESO LP666 spectroscopic follow-up program
Udalski, A.; Pont, F.; Naef, D. et al

in Astronomy and Astrophysics (2008), 482

We present results of the photometric campaign for planetary and low-luminosity object transits conducted by the OGLE survey in the 2005 season (Campaign #5). About twenty of the most promising candidates ... [more ▼]

We present results of the photometric campaign for planetary and low-luminosity object transits conducted by the OGLE survey in the 2005 season (Campaign #5). About twenty of the most promising candidates discovered in these data were subsequently verified spectroscopically with the VLT/FLAMES spectrograph. One of the candidates, OGLE-TR-211, reveals clear changes of radial velocity with a small amplitude of 82 m/s, varying in phase with photometric transit ephemeris. Further analysis confirms the planetary nature of this system. Follow-up precise photometry of OGLE-TR-211 with VLT/FORS, together with radial velocity spectroscopy, supplemented with high-resolution, high S/N VLT/UVES spectra allowed us to derive parameters of the planet and host star. OGLE-TR-211b is a hot Jupiter orbiting an F7-8 spectral type dwarf star with a period of 3.68 days. The mass of the planet is equal to 1.03±0.20 M_Jup, while its radius 1.36[SUP]+0.18[/SUP][SUB]-0.09[/SUB] R_Jup. The radius is about 20% larger than the typical radius of hot Jupiters of similar mass. OGLE-TR-211b is, then, another example of inflated hot Jupiters - a small group of seven exoplanets with large radii and unusually low densities - objects that are a challenge to the current models of exoplanets. Based on observations made with the FORS1 camera and the FLAMES/UVES spectrograph at the VLT, ESO, Chile (program 07.C-0706, 076.C-0122, and 177.C-0666) and 1.3-m Warsaw Telescope at Las Campanas Observatory, Chile. [less ▲]

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