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See detailDenitrification, anaerobic ammonium oxidation, and dissimilatory nitrate reduction to ammonium in an East African Great Lake (Lake Kivu)
Roland, Fleur ULiege; Darchambeau, François; Borges, Alberto ULiege et al

in Limnology and Oceanography (2017)

We investigated anaerobic nitrogen (N) cycling in the water column of Lake Kivu, a deep meromictic tropical lake in East Africa. Data were collected at one station in the Northern Basin and one in the ... [more ▼]

We investigated anaerobic nitrogen (N) cycling in the water column of Lake Kivu, a deep meromictic tropical lake in East Africa. Data were collected at one station in the Northern Basin and one in the Southern Basin, during two sampling campaigns (June 2011—dry season, and February 2012—rainy season). Short-term incubations of sulfide-free water with 15N-labeled substrates revealed high potential denitrification and dissimilatory nitrate reduction to ammonium (DNRA) rates (up to 350 and 36 nmol N produced L−1 h−1, respectively), while anaerobic ammonium oxidation (anammox) was lower (up to 3.3 nmol N produced L−1 h−1). However, anammox rates were 15 nmol N produced L−1 h−1 when 15 NH4+ was added at depths where NH4+ concentrations were very low (< 1 μmol L−1). With the addition of 5 μmol L−1 of 15 NO3− and 10 μmol L−1 of H2S, denitrification and anammox were stimulated in the Northern Basin, while the increase of DNRA rates was less notable. In the Southern Basin, the addition of H2S decreased denitrification rates, probably because of competition with DNRA, which increased, while no effect was observed on anammox. This study puts into evidence the co-occurrence of denitrification, anammox and DNRA, for the first time in a great tropical lake, and underlines the spatial heterogeneity of these processes. Contrary to numerous reports in literature, we show that anammox can significantly occur in presence of H2S, suggesting that the contribution of anammox in the N cycle may be underestimated. [less ▲]

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See detailDenitrification, anammox and fixed nitrogen removal in the water column of a tropical great lake
Darchambeau, François ULiege; Roland, Fleur ULiege; Crowe, SA et al

Conference (2013, April 07)

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See detailDenjoy-Carleman classes and lineability
Esser, Céline ULiege

Conference (2015, June 16)

The Denjoy-Carleman classes are spaces of smooth functions which satisfy growth conditions on their derivatives defined through weight sequences. In this talk, given a Denjoy-Carleman class E of Beurling ... [more ▼]

The Denjoy-Carleman classes are spaces of smooth functions which satisfy growth conditions on their derivatives defined through weight sequences. In this talk, given a Denjoy-Carleman class E of Beurling type that strictly contains another non-quasianalytic class F of Roumieu type, we handle the question of knowing how large the set of functions in E that are nowhere in the class F is. In particular, we prove the dense-lineability of the set of functions of E which are nowhere in F. Consequences for the Gevrey classes are also given. We extend then these results to the case of classes of ultradifferentiable functions defined using weight functions. [less ▲]

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See detailDenmark. Du papier usagé comme arme de subversion
Bawin, Julie ULiege

in Art Même : Chronique des Arts Plastiques de la Communauté française de Belgique (2005), (29), 27

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See detailLa dénomination d'images chez des patients aphasiques: Mesure de l'influence de trois contextes non-verbaux différents
Seron, X.; Monsel, Y.; Van De Kaa, M. A. et al

in Psychologica Belgica (1980), 20

Detailed reference viewed: 74 (2 ULiège)
See detailLes dénominations des relations familiales dans les dialectes de Wallonie
Baiwir, Esther ULiege

Master of advanced studies dissertation (2004)

Detailed reference viewed: 46 (3 ULiège)
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See detailDénommer. Regards rhétoriques sur la terminologie linguistique
[ Lttr 13 ]; Badir, Sémir ULiege; Polis, Stéphane ULiege et al

E-print/Working paper (2013)

Detailed reference viewed: 63 (3 ULiège)
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See detailDenosumab for the treatment of men with low bone mineral density: 24-month results from the Adamo Trial
Langdahl, B; Teglbjaerg, C; Ho, PR et al

in Endocrine Reviews (2014), 35(3), 22-1

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See detailDenosumab therapy in postmenopausal women with osteoporosis : results from the first two years of the freedom trial extension
Bone, H. G.; Chapurlat, R.; Brandi, M. L. et al

in Endocrine Reviews (2011), 32

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See detailDenosumab treatment in postmenopausal women with osteoporosis for up to 9 years: results through year 6 of the freedom extension
Papapoulos, S; Roux, C; Bone, HG et al

in Osteoporosis International (2015), 26(S1), 37-39

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See detailDenosumab treatment of postmenopausal women with osteoporosis for 6 years : results from the first 3 years of the freedom extension
Papapoulos, S; Brown, JP; Chapurlat, R et al

in Osteoporosis International (2012, March), 23(S2), 76

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See detailDense and narrow rings discovered around the Centaur object (10199) Chariklo
Sicardy, B.; Braga-Ribas, F.; Benedetti-Rossi, G. et al

in Muinonen, Karri (Ed.) Asteroids, Comets, Meteors - Book of Abstracts (2014, July 01)

A stellar occultation observed on June 3, 2013 revealed the unexpected presence of two dense rings around (10199) Chariklo [1], the largest Centaur object known to date with a radius of 124±9 km [2]. The ... [more ▼]

A stellar occultation observed on June 3, 2013 revealed the unexpected presence of two dense rings around (10199) Chariklo [1], the largest Centaur object known to date with a radius of 124±9 km [2]. The two rings have respective orbital radii, widths, and normal optical depths of a_1= 391 km, W_1= 7 km, τ_1= 0.4 and a_2= 405 km, W_2= 3 km, τ_2= 0.06 [1]. They are separated by a gap of about 9 km with an optical depth less than 0.004 (1-sigma limit). The presence of those rings has been confirmed during another stellar occultation observed from ESO/NTT La Silla, ESO/VLT Paranal and San Pedro de Atacama on February 16, 2014. More results on the azimuthal variations of the rings and mass estimations of their putative shepherding satellites will be presented. This is the first ring system ever observed that does not pertain to a giant planet. The existence of such a system raises several questions as to the origin and evolution of rings around such a small object. This discovery also suggests that rings may be a more frequent feature than previously thought, in particular, around small bodies. Possible models for the ring formation will be proposed. They can be classified into collisional scenarios that disrupted an impactor or a pre-existing satellite, tidal disruption of an inward-migrating satellite, or material produced by a cometary activity of the central body. [less ▲]

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See detailDense bubble flow in a silo: An unusual flow of a dispersed medium
Bertho, Y.; Becco, Christophe ULiege; Vandewalle, Nicolas ULiege

in Physical Review E (2006), 73(5, Pt 2), 56309

The dense flow of air bubbles in a two-dimensional silo (through an aperture D) filled with a liquid is studied experimentally. A particle tracking technique has been used to bring out the main properties ... [more ▼]

The dense flow of air bubbles in a two-dimensional silo (through an aperture D) filled with a liquid is studied experimentally. A particle tracking technique has been used to bring out the main properties of the flow: displacements of the bubbles, transverse, and axial velocities. The behavior of the air bubbles is observed to present similarities with nondeformable solid grains in a granular flow. Nevertheless, a correlation between the bubble velocities and their deformations has been evidenced. Moreover, a new discharge law (Beverloo like) must be considered for such a system, where the flow rate is observed to vary as D-1/2 and depends on the deformability of the particles. [less ▲]

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See detailDense La0.9Sr0.1Ga0.8Mg0.2O2.85 electrolyte for IT-SOFC's: Sintering study and electrochemical characterization
Traina, Karl ULiege; Henrist, Catherine ULiege; Vertruyen, Bénédicte ULiege et al

in Journal of Alloys & Compounds (2011), 509(5), 1493-1500

This paper presents the sintering behaviour of a La0.9Sr0.1Ga0.8Mg0.2O2.85 coral-like microstructure powder. This is prepared by a successive freeze-drying and self-ignition process followed by ... [more ▼]

This paper presents the sintering behaviour of a La0.9Sr0.1Ga0.8Mg0.2O2.85 coral-like microstructure powder. This is prepared by a successive freeze-drying and self-ignition process followed by calcination at 1200 ◦C during 1 h. This synthesis method gives great uniformity of the powder and allows shaping into compacts without requiring a grinding step. The grain size distribution (between 0.5 and 4 m) favours a good sintering behaviour: open porosity disappear at 1400 ◦C and relative densities over 99% can be achieved after 6 h at 1450 ◦C. The same powder can also be sintered into a thin disc of ∼100 mthickness. The characterization of the dense material by impedance spectroscopy shows that the activation energies below and above 600 ◦C are 1.0 eV and 0.7 eV, respectively. The conductivity at 800 ◦C is ∼0.11 S cm−1. Special attention is devoted to the temperature range between 200 ◦C and 400 ◦C, where the intragrain and intergrain contributions can be distinguished. The analysis of the parameters describing the intragrain constant phase element in the equivalent circuit suggests that, above 325 ◦C, the system evolves from a distribution of relaxation time to only one relaxation time. The analysis of the data by the complexes permittivity show that ionic oxide conduction mechanism would occur in two steps. In the first, an oxygen vacancy would be released and, in the second, the migration of the ionic oxide would take place in the material. [less ▲]

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See detailDense-lineability in classes of ultradifferentiable functions
Esser, Céline ULiege

Conference (2015, May 27)

The Denjoy-Carleman classes are spaces of smooth functions which satisfy growth conditions on their derivatives defined through weight sequences. In this talk, given a Denjoy-Carleman class E of Beurling ... [more ▼]

The Denjoy-Carleman classes are spaces of smooth functions which satisfy growth conditions on their derivatives defined through weight sequences. In this talk, given a Denjoy-Carleman class E of Beurling type that strictly contains another non-quasianalytic class F of Roumieu type, we handle the question of knowing how large the set of functions in E that are nowhere in the class $F$ is. In particular, we prove the dense-lineability of the set of functions of $E$ which are nowhere in F. Consequences for the Gevrey classes are also given. We extend then these results to the case of classes of ultradifferentiable functions defined imposing conditions on their Fourier Laplace transform using weight functions. [less ▲]

Detailed reference viewed: 24 (4 ULiège)
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See detailDensification et qualité de vie : objectifs de la conférence et cadrage des travaux
Godart, Marie-Françoise; Halleux, Jean-Marie ULiege; Hanin, Yves

Conference (2013, November 26)

Detailed reference viewed: 53 (5 ULiège)