Conclusions: The inferred radial distribution of the plasma temperatures agrees rather well with theoretical expectations. The mass-loss rate and CNO abundances corresponding to our best-fit model also agree quite well with the results of recent studies of ζ Pup in the UV and optical domain. Based on observations collected with XMM-Newton, an ESA Science Mission with instruments and contributions directly funded by ESA Member States and the USA (NASA). [less ▲]Detailed reference viewed: 13 (3 ULg) Effects of the Coriolis force on high-order g modes in γ Doradus starsBouabid, M.-P.; Dupret, Marc-Antoine ; Salmon, Sébastien et alin Monthly Notices of the Royal Astronomical Society (2013), 429(3), 2500γ Doradus stars pulsate with high-order gravity modes having typical frequencies which can be comparable to or higher than their rotation frequencies. Therefore, rotation has a non-negligible effect on ... [more ▼]γ Doradus stars pulsate with high-order gravity modes having typical frequencies which can be comparable to or higher than their rotation frequencies. Therefore, rotation has a non-negligible effect on their oscillation properties. To explore the rotation-pulsation coupling in γ Dor stars, we perform a non-adiabatic study including the traditional approximation of rotation on a grid of spherical stellar models covering the mass range 1.4 < M[SUB]*[/SUB] < 2.1 M[SUB]&sun;[/SUB]. This approximation allows us to treat the effect of the Coriolis force on the frequencies and the stability of high-order g modes. The effect of the Coriolis force depends on the kind of mode considered (prograde sectoral or not) and increases with their periods. As a consequence, we first find that the period spacing between modes is no longer periodically oscillating around a constant value. Secondly, we show that the frequency gap (5-15 cycles day[SUP]-1[/SUP]) arising from stable modes between γ Dor-type high-order g modes and δ Scuti-type modes can be easily filled by g-mode frequencies shifted to higher values by the rotation. Thirdly, we analyse the combined effect of diffusive mixing and the Coriolis force on the period spacings. And finally, we predict a slight broadening of the γ Dor instability strip. [less ▲]Detailed reference viewed: 19 (8 ULg) The CORALIE survey for southern extrasolar planets XVII. New and updated long period and massive planetsMarmier, M.; Ségransan, D.; Udry, S. et alin Astronomy and Astrophysics (2013), 551Context. Since 1998, a planet-search program around main sequence stars within 50 pc in the southern hemisphere has been carried out with the CORALIE echelle spectrograph at La Silla Observatory. Aims ... [more ▼]Context. Since 1998, a planet-search program around main sequence stars within 50 pc in the southern hemisphere has been carried out with the CORALIE echelle spectrograph at La Silla Observatory. Aims: With an observing time span of more than 14 years, the CORALIE survey is now able to unveil Jovian planets on Jupiter's period domain. This growing period-interval coverage is important for building formation and migration models since observational constraints are still weak for periods beyond the ice line. Methods: Long-term precise Doppler measurements with the CORALIE echelle spectrograph, together with a few additional observations made with the HARPS spectrograph on the ESO 3.6 m telescope, reveal radial velocity signatures of massive planetary companions on long-period orbits. Results: In this paper we present seven new planets orbiting HD 27631, HD 98649, HD 106515A, HD 166724, HD 196067, HD 219077, and HD 220689, together with the CORALIE orbital parameters for three already known planets around HD 10647, HD 30562, and HD 86226. The period range of the new planetary companions goes from 2200 to 5500 days and covers a mass domain between 1 and 10.5 MJup. Surprisingly, five of them present very high eccentricities above e > 0.57. A pumping scenario by Kozai mechanism may be invoked for HD 106515Ab and HD 196067b, which are both orbiting stars in multiple systems. Since the presence of a third massive body cannot be inferred from the data of HD 98649b, HD 166724b, and HD 219077b, the origin of the eccentricity of these systems remains unknown. Except for HD 10647b, no constraint on the upper mass of the planets is provided by Hipparcos astrometric data. Finally, the hosts of these long period planets show no metallicity excess. [less ▲]Detailed reference viewed: 8 (2 ULg) Diet composition of young and adult Northern Grey-headed Sparrow Passer griseus and adult Southern Red Bishop Euplectes orix in BurundiNasasagare, Régine Pacis; Ntakimazi, Gaspard; Libois, Roland in Malimbus (2013), 35(1), 1-10We studied the diet composition of Northern Grey-headed Sparrow Passer griseus and Southern Red Bishop Euplectes orix in four localities of the Rusizi Plain, northwest Burundi. We analyzed crop contents ... [more ▼]We studied the diet composition of Northern Grey-headed Sparrow Passer griseus and Southern Red Bishop Euplectes orix in four localities of the Rusizi Plain, northwest Burundi. We analyzed crop contents of 100 adults from each of the two species and the composition of food brought by parents to nestlings of the sparrow at ten nests. In all four sites, the sparrow’s diet consisted primarily of rice. The bishop also fed mostly on rice grains but also ate Lepidoptera caterpillars, some other insects and wild grass seeds such as Panicum sp. and Brachiaria sp. For adults of both bird species, there was no significant variation in diet throughout the year. However, the diet of young sparrows was much more diverse and changed from the day of hatching until fledging. On the day of hatching, chicks ate mainly caterpillars but by the tenth day, food items comprised one third caterpillars, one third Orthoptera and the rest of other insects including Odonata, Dictyoptera, Isoptera and adult Lepidoptera. After this and until fledging, the chicks were fed increasingly on rice seeds. Simultaneously, the proportion of caterpillars taken gradually decreased until none was fed to the nestlings at the end of the nestling period. The items brought by parents also varied with time of day, with caterpillars and grasshoppers in higher proportions in the morning, decreasing around mid-day and then increasing in the evening. [less ▲]Detailed reference viewed: 17 (2 ULg) Late Holocene changes in cyanobacterial community structure in maritime Antarctic lakesFernandez-Carazo, Rafael; Verleyen, Elie; Hodgson, Dominic A et alin Journal of Paleolimnology (2013), 50Despite the dominance of cyanobacteria in polar freshwater aquatic ecosystems, little is known about their past biodiversity and response to climate and environmental changes. We explored the use of light ... [more ▼]Despite the dominance of cyanobacteria in polar freshwater aquatic ecosystems, little is known about their past biodiversity and response to climate and environmental changes. We explored the use of light microscopy of microfossils, high performance liquid chromatography of the fossil pigment composition and denaturing gradient gel electrophoresis of fossil 16S rRNA genes to study past and present-day differences in cyanobacterial community structure in response to climate changes in two adjacent maritime Antarctic lakes with contrasting depths (4 and 26 m) and light climates. Light microscopy was of limited use because of degradation of cell structures. Fossil cyanobacterial pigment concentrations were below the detection limits of our method in several sediment samples in the deep lake, but abundant and diverse inthe sediment core from the shallow pond, probably as a consequence of increased light availability and/or a more diverse and abundant benthic cyanobacterial flora. Total carotenoid and chlorophyll concentrations were highest in both lakes between ca. 2,950 and 1,800 cal yr BP, which coincides with the late Holocene climate optimum recognised elsewhere in maritime Antarctica. Cyanobacterial molecular diversity was higher in the top few centimeters of the sediments in both lakes. In deeper sediments, the taxonomic turnover of cyanobacteria appeared to be relatively small in response to past climate anomalies in both lakes, underscoring the broad tolerance of cyanobacteria to environmental variability. This, however, may in part be explained by the low taxonomic resolution obtained with the relatively conserved 16S rRNA gene and/or the preferential preservation of particular taxa. Our results highlight the potential of fossil DNA in lake sediments to study colonization and succession dynamics of lacustrine cyanobacteria and warrant further investigation of the factors that affect preservation of cyanobacterial DNA. [less ▲]Detailed reference viewed: 33 (15 ULg) Egg Production Performance of the Local Kabyle Hen and its Crossbreeds with ISA-Brown Strain in Semi-Intensive ConditionsMoula, Nassim ; Mamadou Tandiang, Diaw; Salhi, Abdellah et alin International Journal of Poultry Sciences (2013), 12(3), 148-152A cross between the ISA-Brown industrial strain and an Algerian local (Kabyle) breed was compared with the Algerian local (Kabyle) hen. The comparison during the egg production period was done in ... [more ▼]A cross between the ISA-Brown industrial strain and an Algerian local (Kabyle) breed was compared with the Algerian local (Kabyle) hen. The comparison during the egg production period was done in individual cages, in a ventilated henhouse without any particular isolation. The same commercial diet has been provided over three time periods (35 to 36 weeks, 50 to 51 weeks and 65 to 66 weeks of age). Egg number and body weight at first egg was significantly lower in the Kabyle local breed. Mortality was almost equal during the breeding period and the egg production periods for the two genotypes. The Kabyle hen eggs, in spite of a weight which was lower (43.70 to 53.37 g according to the age), gave yolk to albumen ratio similar to the ISAKAB cross (0.52 to 0.58 according to age). Finally, the ISAKAB cross was better in terms of egg production and egg quality than the local hen, in test conditions. [less ▲]Detailed reference viewed: 92 (28 ULg) Eigenvector-based approach to neutrino mixingAristizabal Sierra, Diego ; Houet, Eric; Ivo, Medeiros Varzielasin Physical Review. D, Particles, Fields, Gravitation, and Cosmology (2013), 87We propose a model-independent analysis of the neutrino mass matrix through an expansion in terms of the eigenvectors defining the lepton mixing matrix, which we show can be parametrized as small ... [more ▼]We propose a model-independent analysis of the neutrino mass matrix through an expansion in terms of the eigenvectors defining the lepton mixing matrix, which we show can be parametrized as small perturbations of the tribimaximal mixing eigenvectors. This approach proves to be powerful and convenient for some aspects of lepton mixing, in particular when studying the sensitivity of the mass matrix elements to departures from their tribimaximal form. In terms of the eigenvector decomposition, the neutrino mass matrix can be understood as originating from a tribimaximal dominant structure with small departures determined by data. By implementing this approach to cases when the neutrino masses originate from different mechanisms, we show that the experimentally observed structure arises very naturally. We thus claim that the observed deviations from the tribimaximal mixing pattern might be interpreted as a possible hint of a hybrid'' nature of the neutrino mass matrix. [less ▲]Detailed reference viewed: 5 (0 ULg) Composition chimique et test d’efficacité in vitro des huiles essentielles extraites de feuilles fraîches du basilic commun (Ocimum basilicum) et du basilic tropical (Ocimum gratissimum) sur Salmonella enterica sérotype Oakland et Salmonella enterica sérotype LegonKpodekon, MT; Boko, KC; Mainil, JG et alin Journal de société Ouest-Africaine de Chimie (2013)Detailed reference viewed: 79 (5 ULg) The University of Liège Libraries (Belgium)Renaville, François in Informed Librarian Online (2013)Short description of the University of Liège Libraries: brief history, collections, e-resources, Open Access projects...Detailed reference viewed: 114 (23 ULg) Présence des Congolais à Bruxelles et postcolonialismesDemart, Sarah in Agir par la culture (2013), 33(printemps), Detailed reference viewed: 9 (2 ULg) Synovite villonodulaire pigmentée du genouSmets, Fanny; KURTH, William ; Crielaard, Jean-Michel et alin Revue Médicale de Liège (2013), 68(3), 104-109This case report is concerned with a 30 year old patient diagnosed with pigmented villonodular synovitis (PVNS) in the knee. The patient underwent an orthopedic surgical operation to remove the lesions ... [more ▼]This case report is concerned with a 30 year old patient diagnosed with pigmented villonodular synovitis (PVNS) in the knee. The patient underwent an orthopedic surgical operation to remove the lesions. PVNS is a rare proliferative disorder, mostly benign and affecting the knee; its aetiology remains unclear. It represents a medical challenge because of non-specific symptoms that delay the diagnosis with a very high rate of recurrence. MRI imaging is necessary to explore the lesions, but the final diagnosis can only be made after anatomopathologic analysis of the excised lesions. When multiple lesions are present, the treatment consists of their excision by arthrotomy, or by arthroscopy if the disease is localized. [less ▲]Detailed reference viewed: 251 (14 ULg) Mali et Union européenne. Les poupées gigognes de la sécuritéDumoulin, André in Défense & sécurité internationale (2013), (3), Prix Nobel d'Economie et mathématiquesBair, Jacques ; Haesbroeck, Gentiane in Losanges (2013), 20Le Prix Nobel d'Economie 2012 a été décerné aux deux mathématiciens américains Lloyd Shapley et Alvin Roth. Cet événement nous a donné l'occasion de nous pencher quelque peu sur des prix internationaux ... [more ▼]Le Prix Nobel d'Economie 2012 a été décerné aux deux mathématiciens américains Lloyd Shapley et Alvin Roth. Cet événement nous a donné l'occasion de nous pencher quelque peu sur des prix internationaux pouvant être attribués à des mathématiciens. [less ▲]Detailed reference viewed: 25 (5 ULg) La philosophie dès le primaire ! Quelques difficultés à surmonterGauthier, Jean-Marie in La philo mode d'emploi (2013), 236Detailed reference viewed: 31 (5 ULg) Identification and structure elucidation of four cannabimimetic compounds in seized productsDenooz, Raphaël ; VAN HEUGEN, Jean-Claude ; Frederich, Michel et alin Journal of Analytical Toxicology (2013), 37(2), 56-63Since 2008, herbal mixtures with synthetic cannabinoid compounds have been sold as incense throughout the world. Although these new drugs are labeled as not for human consumption, these products are ... [more ▼]Since 2008, herbal mixtures with synthetic cannabinoid compounds have been sold as incense throughout the world. Although these new drugs are labeled as not for human consumption, these products are smoked for their cannabis-like effects. This study reports the structural and spectral elucidation of four cannabimimetic compounds seized in Belgium: (4-methoxyphenyl)-1-(pentyl-1H-indol-3-yl)methanone (RCS-4), 1-(5-fluoropentyl)-3-(1-naphtoyl)indole (AM-2201), 2-(2-chlorophenyl)-1-(1-pentylindol-3-yl)ethanone (JWH-203) and 4-ethylnaphthalen-1-yl-(1-pentylindol-3-yl)methanone (JWH-210). Laboratory investigations were conducted by liquid chromatography (LC)–ultraviolet spectroscopy, high-resolution accurate mass detection and nuclear magnetic resonance (NMR) analysis. This combined analytical approach allowed the detection of illicit compounds for which reference materials were not available. To facilitate identification and to complete existing databases, ultraviolet spectra and NMR data of all seized products are presented. Additionally, LC–quadrupole time-of-flight data were recorded to provide absolute identification. [less ▲]Detailed reference viewed: 61 (32 ULg) Fifty years of contrasted residue management of an agricultural crop: impacts on the soil carbon budget and on heterotrophic respiration.Buysse, Pauline ; Roisin, Christian; Aubinet, Marc in Agriculture, Ecosystems & Environment (2013), 167Crop management exerts a strong influence on the soil carbon (C) balance. This study investigated a long-term experiment initiated in 1959 at a site in the Hesbaye region of Belgium and focused on three ... [more ▼]Crop management exerts a strong influence on the soil carbon (C) balance. This study investigated a long-term experiment initiated in 1959 at a site in the Hesbaye region of Belgium and focused on three contrasted treatments: residue export (RE), farmyard manure (FYM) addition and residue restitution (RR) after harvest. The objectives were to quantify the components of the C budget of croplands from a 50-year perspective and to identify the impact of the treatments on this budget and soil C sequestration, given the relatively low levels of esidue application. The soil C budget was calculated for each treatment on the basis of total soil organic C (SOC) content measurements and C input data collected since the experiment had begun and drawn from the literature. To evaluate the robustness of this approach, the budget-based output estimates were compared with annual heterotrophic respiration (HR) averages extrapolated from seasonal field HR measurements carried out at the same experimental site in 2010. The soil C budgetbased output estimates accorded well with field-based HR measurements and with most HR estimates in the literature, suggesting that, despite the many uncertainties affecting the soil C budget, these results were robust. The three treatments investigated in this study had different impacts on SOC stocks, mainly during the first 20 years of the experiment. RE and FYM caused significant SOC decreases (on average, −7 ± 5 g C m−2 year−1 over the 50 years) and increases (10 ± 5 g C m−2 year−1), espectively, whereas RR had no significant impact on the SOC stocks. The study also showed (i) the very large part (about twothirds of the total input) that represented the below-ground input, weeds and other left-over residues in the C budget, (ii) the important role probably played by residue quality in C sequestration and (iii) the large proportion of C lost annually rom the soil (which represents 93–98, 100 and 102–107% of the amounts of fresh residue rought to the soil each year in the FYM, RR and RE treatments, respectively). [less ▲]Detailed reference viewed: 8 (2 ULg) L’isolement social chez les personnes de 65 ans et plus en Belgique : sa prévalence et ses déterminantsMaggi, Patrick ; Delye, Samuel ; Vermeulen, Bram et alin Observatoire : Revue d'Action Sociale & Médico-Sociale (2013)L’isolement social en Belgique touche aujourd’hui 23% des 65 ans et plus. Ce phénomène, contrairement à certaines croyances, ne semble pas s’aggraver, mais le vieillissement rapide de notre population ... [more ▼]L’isolement social en Belgique touche aujourd’hui 23% des 65 ans et plus. Ce phénomène, contrairement à certaines croyances, ne semble pas s’aggraver, mais le vieillissement rapide de notre population laisse présager une augmentation de la prévalence des personnes âgées isolées dans les années à venir. Cet article vise à établir la prévalence de l’isolement social en Belgique en 2011, identifier ses déterminants et analyser l’évolution temporelle de la solitude, la forme subjective de l’isolement social. [less ▲]Detailed reference viewed: 105 (11 ULg) Censure, liberté d’expression et dynamiques sociopolitiques en Chine contemporaineFlorence, Eric in Culture, le Magazine Culturel de l'Université de Liège (2013)Comment rendre compte de la complexité de la question de l’expression d’une parole publique et politique en Chine contemporaine autrement que par le biais d’une opposition frontale entre expression et ... [more ▼]Comment rendre compte de la complexité de la question de l’expression d’une parole publique et politique en Chine contemporaine autrement que par le biais d’une opposition frontale entre expression et répression ? Dans cette contribution, se penchant sur le cas de la presse et des nouveaux médias, l’auteur propose une approche de cette question mettant l’accent sur les rapports de force, les oppositions et les accommodements entre l’État-Parti et les différentes catégories de la population chinoise, ainsi que sur les luttes symboliques et matérielles qui animent la société chinoise aujourd’hui. [less ▲]Detailed reference viewed: 12 (1 ULg) High-precision CoRoT space photometry and fundamental parameter determination of the B2.5V star HD 48977Thoul, Anne ; Degroote, Pieter; Catala, Claude et alin Astronomy and Astrophysics (2013), 551We present the CoRoT light curve of the bright B2.5V star HD 48977 observed during a short run of the mission in 2008, as well as a high-resolution spectrum gathered with the HERMES spectrograph at the ... [more ▼]We present the CoRoT light curve of the bright B2.5V star HD 48977 observed during a short run of the mission in 2008, as well as a high-resolution spectrum gathered with the HERMES spectrograph at the Mercator telescope. We use several time series analysis tools to explore the nature of the variations present in the light curve. We perform a detailed analysis of the spectrum of the star to determine its fundamental parameters and its element abundances. We find a large number of high-order g-modes, and one rotationally induced frequency. We find stable low-amplitude frequencies in the p-mode regime as well. We conclude that HD 48977 is a new Slowly Pulsating B star with fundamental parameters found to be Teff = 20000 $\pm$ 1000 K and log(g)=4.2 $/pm$ 0.1. The element abundances are similar to those found for other B stars in the solar neighbourhood. HD 48977 was observed during a short run of the CoRoT satellite implying that the frequency precision is insufficient to perform asteroseismic modelling of the star. Nevertheless, we show that a longer time series of this star would be promising for such modelling. Our present study contributes to a detailed mapping of the instability strips of B stars in view of the dominance of g-mode pulsations in the star, several of which occur in the gravito-inertial regime. [less ▲]Detailed reference viewed: 21 (13 ULg) Flow-cytometric assessment of damages to Acetobacter senegalensis during freeze-drying process and storageShafiei, Rasoul ; Delvigne, Frank ; Thonart, Philippe in Acetic Acid Bacteria (2013), 2(2(s1)), 10Downstream processes have great influences on bacterial starter production. Different modifications occur to cellular compounds during freeze-drying process and storage of bacterial starters. Consequently ... [more ▼]Downstream processes have great influences on bacterial starter production. Different modifications occur to cellular compounds during freeze-drying process and storage of bacterial starters. Consequently, viability and culturability (multiplication capacity) undergo some changes. In this study, the effects of freeze-drying process and storage conditions were examined on cell envelope integrity, respiration and culturability of Acetobacter senegalensis.