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See detailPrendre l’avion de Charleroi à Liège ?
Ozer, Pierre ULg; Perrin, Dominique ULg

Article for general public (2006)

Dès le 1er novembre, six fois par semaine, notre région aura son vol Charleroi-Liège, soit une distance de 84 kilomètres en Boeing 737-400. Soit un record de lâcher de CO2 pour une si petite distance à l ... [more ▼]

Dès le 1er novembre, six fois par semaine, notre région aura son vol Charleroi-Liège, soit une distance de 84 kilomètres en Boeing 737-400. Soit un record de lâcher de CO2 pour une si petite distance à l'heure du Protocole de Kyoto ! [headline] Sous le titre « Excellente nouvelle pour la communauté marocaine et les amateurs de soleil », la nouvelle a été annoncée haut et fort à la mi-septembre : « Au terme de négociations fructueuses avec les directions des aéroports de Charleroi Bruxelles Sud et Liège, la compagnie aérienne Jet4you a décidé, dès le 01 novembre 2006, de lancer trois vols hebdomadaires vers Casablanca à partir de 18 Euros tous frais compris ». Vous avez bien lu. Il en coûtera moins de faire Charleroi-Casablanca en avion que de faire Charleroi-Liège en train (première classe) pour les privilégiés qui bénéficieront de ce prix d'appel. Pourquoi donc comparer Casablanca et Liège ? Simplement car l'avion reliera bien Charleroi à Liège, puis Liège à la capitale économique du Maroc. En d'autres termes, six fois par semaine, notre région aura son vol Charleroi-Liège, soit une distance de 84 kilomètres. Un record de très courte distance, sinon mondial, au moins européen… Et si cela répond directement à une forte demande d'une clientèle sans cesse croissante, on peut se demander quel est le coût environnemental de la mise en place d'une telle liaison opérée par un Boeing 737-400. [...] [less ▲]

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See detailStudy of the physical changes of spray-dried inulin during storage.
Ronkart, Sébastien; Paquot, Michel ULg; Fougnies, C. et al

Poster (2006, October 17)

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See detailBulletin agrométéorologique - Septembre 2006
Tychon, Bernard ULg; Denis, Antoine ULg; De Longueville, Florence ULg et al

in Bulletin Agrométéorologique (2006), 5(6), 1-4

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See detailLa sexologie clinique en Belgique
Kempeneers, Philippe ULg

Conference (2006, October 07)

Le point sur la formation et la reconnaissance légale des sexologues et des sexologues cliniciens en belgique (2006)

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See detailSe définir
Rentier, Bernard ULg

Speech/Talk (2006)

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See detailAbundance analysis of prime B-type targets for asteroseismology. I. Nitrogen excess in slowly-rotating beta Cephei stars
Morel, Thierry ULg; Butler, K.; Aerts, C. et al

in Astronomy and Astrophysics (2006), 457

Seismic modelling of the β Cephei stars promises major advances in our understanding of the physics of early B-type stars on (or close to) the main sequence. However, a precise knowledge of their ... [more ▼]

Seismic modelling of the β Cephei stars promises major advances in our understanding of the physics of early B-type stars on (or close to) the main sequence. However, a precise knowledge of their physical parameters and metallicity is a prerequisite for correct mode identification and inferences regarding their internal structure. Here we present the results of a detailed NLTE abundance study of nine prime targets for theoretical modelling: <ASTROBJ>γ Peg</ASTROBJ>, <ASTROBJ>δ Cet</ASTROBJ>, <ASTROBJ>ν Eri</ASTROBJ>, <ASTROBJ>β CMa</ASTROBJ>, <ASTROBJ>ξ1 CMa</ASTROBJ>, <ASTROBJ>V836 Cen</ASTROBJ>, <ASTROBJ>V2052 Oph</ASTROBJ>, <ASTROBJ>β Cep</ASTROBJ> and DD (12) Lac (hereafter <ASTROBJ>12 Lac</ASTROBJ>). The following chemical elements are considered: He, C, N, O, Mg, Al, Si, S and Fe. Our curve-of-growth abundance analysis is based on a large number of time-resolved, high-resolution optical spectra covering in most cases the entire oscillation cycle of the stars. Nitrogen is found to be enhanced by up to 0.6 dex in four stars, three of which have severe constraints on their equatorial rotational velocity, Ω R, from seismic or line-profile variation studies: <ASTROBJ>β Cep</ASTROBJ> (Ω R ~ 26 km s[SUP]-1[/SUP]), <ASTROBJ>V2052 Oph</ASTROBJ> (Ω R ~ 56 km s[SUP]-1[/SUP]), <ASTROBJ>δ Cet</ASTROBJ> (Ω R < 28 km s[SUP]-1[/SUP]) and <ASTROBJ>ξ1 CMa</ASTROBJ> (Ω R sin i ⪠10 km s[SUP]-1[/SUP]). The existence of core-processed material at the surface of such largely unevolved, slowly-rotating objects is not predicted by current evolutionary models including rotation. We draw attention to the fact that three stars in this subsample have a detected magnetic field and briefly discuss recent theoretical work pointing to the occurrence of diffusion effects in β Cephei stars possibly capable of altering the nitrogen surface abundance. On the other hand, the abundances of all the other chemical elements considered are, within the errors, indistinguishable from the values found for OB dwarfs in the solar neighbourhood. Despite the mild nitrogen excess observed in some objects, we thus find no evidence for a significantly higher photospheric metal content in the studied β Cephei stars compared to non-pulsating B-type stars of similar characteristics. [less ▲]

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See detailA non-local MLT treatment fitting 3D simulations
Dupret, Marc-Antoine ULg; Goupil, M*-J; Samadi, R. et al

in Proceedings of SOHO 18/GONG 2006/HELAS I, Beyond the spherical Sun (2006, October 01)

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See detailTheoretical damping rates and phase-lags for solar-like oscillations
Dupret, Marc-Antoine ULg; Barban, C.; Goupil, Marie-José et al

in Proceedings of SOHO 18/GONG 2006/HELAS I, Beyond the spherical Sun (2006, October 01)

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See detailEnergetic effects in classical pulsators
Dupret, Marc-Antoine ULg; Grigahcène, A.; Théado, S. et al

in Proceedings of SOHO 18/GONG 2006/HELAS I, Beyond the spherical Sun (2006, October 01)

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See detailModelling intermediate mass red giants
Moreira, O.; Noels-Grötsch, Arlette ULg; Dupret, Marc-Antoine ULg

in Proceedings of SOHO 18/GONG 2006/HELAS I, Beyond the spherical Sun (2006, October 01)

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See detailMechanism of reoxygenation after antiangiogenic therapy using SU5416 and its importance for guiding combined antitumor therapy
ANSIAUX, Réginald; BAUDELET, Christine; JORDAN, Bénédicte et al

in Cancer Research (2006), 66(19), 9698704

Emerging preclinical studies support the concept of a transient "normalization" of tumor vasculature during the early stage of antiangiogenic treatment, with possible beneficial effects on associated ... [more ▼]

Emerging preclinical studies support the concept of a transient "normalization" of tumor vasculature during the early stage of antiangiogenic treatment, with possible beneficial effects on associated radiotherapy or chemotherapy. One key issue in this area of research is to determine whether this feature is common to all antiangiogenic drugs and whether the phenomenon occurs in all types of tumors. In the present study, we characterized the evolution of the tumor oxygenation (in transplantable liver tumor and FSAII tumor models) after administration of SU5416, an antagonist of the vascular endothelial growth factor receptor. SU5416 induced an early increase in tumor oxygenation [measured by electronic paramagnetic resonance (EPR)], which did not correlate with remodeling of the tumor vasculature (assessed by CD31 labeling using immunohistochemistry) or with tumor perfusion (measured by dynamic contrast enhanced-magnetic resonance imaging). Inhibition of mitochondrial respiration (measured by EPR) was responsible for this early reoxygenation. Consistent with these unique findings in the tumor microenvironment, we found that SU5416 potentiated tumor response to radiotherapy but not to chemotherapy. In addition to the fact that the characterization of the tumor oxygenation is essential to enable correct application of combined therapies, our results show that the long-term inhibition of oxygen consumption is a potential novel target in this class of compounds. [less ▲]

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See detailThe atypical emission-line star Hen 3-209
Nazé, Yaël ULg; Rauw, Grégor ULg; Hutsemekers, Damien ULg et al

in Monthly Notices of the Royal Astronomical Society (2006), 371(4), 1594-1600

We analyse observations, spanning 15 yr, dedicated to the extreme emission-line object Hen 3-209. Our photometric data indicate that the luminosity of the star undergoes marked variations with a peak-to ... [more ▼]

We analyse observations, spanning 15 yr, dedicated to the extreme emission-line object Hen 3-209. Our photometric data indicate that the luminosity of the star undergoes marked variations with a peak-to-peak amplitude of 0.65 mag. These variations are recurrent, with a period of 16.093 +/- 0.005 d. The spectrum of Hen 3-209 is peculiar with many different lines (H I, He I, Fe II,. showing P Cygni profiles. The line profiles are apparently changing in harmony with the photometry. The spectrum also contains [O III] lines that display a saddle profile topped by three peaks, with a maximum separation of about 600 km s(-1). Hen 3-209 is most likely an evolved luminous object suffering from mass ejection events and maybe belonging to a binary system. [less ▲]

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See detailGCIRS 16SW: A massive eclipsing binary in the Galactic center
Martins, F.; Trippe, S.; Paumard, T. et al

in Astrophysical Journal (2006), 649(2, Part 2), 103-106

We report on the spectroscopic monitoring of GCIRS 16SW, an Ofpe/WN9 star and LBV candidate in the central parsec of the Galaxy. SINFONI observations show strong daily spectroscopic changes in the K band ... [more ▼]

We report on the spectroscopic monitoring of GCIRS 16SW, an Ofpe/WN9 star and LBV candidate in the central parsec of the Galaxy. SINFONI observations show strong daily spectroscopic changes in the K band. Radial velocities are derived from the He I 2.112 mu m line complex and vary regularly with a period of 19.45 days, indicating that the star is most likely an eclipsing binary. Under various assumptions, we are able to derive a mass of similar to 50 M circle dot for each component. [less ▲]

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See detailL'astronomie dans le monde
Manfroid, Jean ULg

Article for general public (2006)

Cycle solaire; Voyager 1; Geysers aux pôles martiens; Planètes extrasolaires; Systèmes planétaires en formation; Spirales de poussière; NGC 6397; Protogalaxies lointaines; Deutérium; Economie cosmique ... [more ▼]

Cycle solaire; Voyager 1; Geysers aux pôles martiens; Planètes extrasolaires; Systèmes planétaires en formation; Spirales de poussière; NGC 6397; Protogalaxies lointaines; Deutérium; Economie cosmique; AKARI; Travaux inutiles (les avatars du mot planète) [less ▲]

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