References of "2006"
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See detailAnisotropic avalanches and flux penetration in patterned superconductors
Gheorghe, D. G.; Menghini, M.; Wijngaarden, R. J. et al

in Physica C: Superconductivity (2006), 437-38

Both for a fundamental understanding of the flux penetration process and for technical applications, the role of artificial pinning sites (such as antidots) in superconductors generates a lot of interest ... [more ▼]

Both for a fundamental understanding of the flux penetration process and for technical applications, the role of artificial pinning sites (such as antidots) in superconductors generates a lot of interest. We perform magneto-optical imaging experiments on type-II Pb thin films patterned with square arrays of square antidots and square arrays of rectangular antidots and blind holes. We demonstrate that a square lattice of rectangular antidots can lead to similar anisotropy in flux penetration and critical current as a rectangular lattice of square antidots. In addition we show how thermo-magnetic avalanches can be guided-and hence to a certain extend controlled-by such holes. (c) 2006 Elsevier B.V. All rights reserved. [less ▲]

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See detailDINEOF reconstruction of clouded images including error maps. Application to the Sea-Surface Temperature around Corsican Island
Beckers, Jean-Marie ULg; Barth, Alexander ULg; Alvera Azcarate, Aïda ULg

in Ocean Science (2006), 2

We present an extension to the Data INterpolating Empirical Orthogonal Functions (DINEOF) technique which allows not only to fill in clouded images but also to provide an estimation of the error ... [more ▼]

We present an extension to the Data INterpolating Empirical Orthogonal Functions (DINEOF) technique which allows not only to fill in clouded images but also to provide an estimation of the error covariance of the reconstruction. This additional information is obtained by an analogy with optimal interpolation. It is shown that the error fields can be obtained with a clever rearrangement of calculations at a cost comparable to that of the interpolation itself. The method is presented on the reconstruction of sea-surface temperature in the Ligurian Sea and around the Corsican Island (Mediterranean Sea), including the calculation of inter-annual variability of average surface values and their expected errors. The application shows that the error fields are not only able to reflect the data-coverage structure but also the covariances of the physical fields. [less ▲]

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See detailFinite element simulations of nanoindentation in beta metastable Ti alloys
Gerday, Anne-Françoise ULg; Clement, N.; Jacques, P. J. et al

in Juster, Neal; Rosochowski, Andrzej (Eds.) Proceedings of the 9th International ESAFORM Conference on Material Forming (2006)

Nanoindentation is a versatile tool to probe local plastic properties of materials. Finite element (FE) modelling is currently used to identify material data from nanoindentation tests [1-4]. The general ... [more ▼]

Nanoindentation is a versatile tool to probe local plastic properties of materials. Finite element (FE) modelling is currently used to identify material data from nanoindentation tests [1-4]. The general ambition of this research is to extract the material parameters describing the response of a new Ti alloy, called Ti-555, in order to perform simulations on representative microscopic cells and guide the optimisation of this alloy. In this paper, the first steps of the identification of the macroscopic flow parameters of the β-phase are described. The nanoindentation tests using a pyramidal Berkovich diamond indenter are performed in the β-phase. The FEM results with different parameters of an isotropic and anisotropic elasto-plastic (EP) constitutive law are analyzed and the predicted shapes are compared to the final shape of the indented material. The FE results very much depend on physical model choices, and cannot rely on an automatic identification approach. [less ▲]

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See detailModelling weathering processes at the catchment scale: The WITCH numerical model
Godderis, Y.; François, Louis ULg; Probst, A. et al

in Geochimica et Cosmochimica Acta (2006), 70(5), 1128-1147

A numerical model of chemical weathering in soil horizons and underlying bedrock (WITCH) has been coupled to a numerical model of water and carbon cycles in forest ecosystems (ASPECTS) to simulate the ... [more ▼]

A numerical model of chemical weathering in soil horizons and underlying bedrock (WITCH) has been coupled to a numerical model of water and carbon cycles in forest ecosystems (ASPECTS) to simulate the concentration of major species within the soil horizons and the stream of the Strengbach granitic watershed, located in the Vosges Mountains (France). For the first time, simulations of solute concentrations in soil layers and in the catchment river have been performed on a seasonal basis. The model is able to reproduce the concentrations of most major species within the soil horizons, as well as catching the first-order seasonal fluctuations of aqueous calcium, magnesium and silica concentrations. However, the WITCH model underestimates concentrations of Mg2+ and silica at the spring of the catchment stream, and significantly underestimates Ca2+ concentration. The deficit in calculated calcium can be compensated for by dissolution of trace apatite disseminated in the bedrock. However, the resulting increased Ca2+ release yields important smectite precipitation in the deepest model layer (in contact with the bedrock) and subsequent removal of large amount of silica and magnesium from solution. In contrast, the model accurately accounts for the concentrations of major species (Ca, Mg and silica) measured in the catchment stream when precipitation of clay minerals is not allowed. The model underestimation of Mg2+ and H4SiO4 concentrations when precipitation of well crystallized smectites is allowed strongly suggests that precipitation of well crystallized clay minerals is overestimated and that more soluble poorly crystallized and amorphous materials may be forming. In agreement with observations on other watersheds draining granitic rocks, this study indicates that highly soluble trace calcic phases control the aqueous calcium budget in the Strengbach watershed. (c) 2005 Elsevier Inc. All rights reserved. [less ▲]

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See detailNyungwea, a new genus of lichen with goniocyst-producing stipes from Rwanda and Uganda (East Africa)
Sérusiaux, Emmanuel ULg; Fischer, E.; Killmann, D.

in Lichenologist (2006), 38(Part 2), 115-121

The new genus and species Nyungwea pallida is characterized by a thin thallus lichenized with Trentepohlia and pale stipes producing goniocysts. Its taxonomic position is uncertain. It is named after the ... [more ▼]

The new genus and species Nyungwea pallida is characterized by a thin thallus lichenized with Trentepohlia and pale stipes producing goniocysts. Its taxonomic position is uncertain. It is named after the large pristine montane forest of Nyungwe in Rwanda (East Africa) where it was first found; it is also known from the Mabira forest in Uganda. [less ▲]

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See detailVenus' ultraviolet airglow and aurora: Monte Carlo simulations and comparison with observations
Gérard, Jean-Claude ULg; Shematovich, V. I.; Bisikalo, D. V. et al

in European Planetary Science Congress 2006 (2006)

The Venus airglow has been observed from spectrometers on board rockets probes and satellites such as OUVS on Pioneer Venus Venera Galileo HUT on the Space Shuttle and quite recently SPICAV on Venus ... [more ▼]

The Venus airglow has been observed from spectrometers on board rockets probes and satellites such as OUVS on Pioneer Venus Venera Galileo HUT on the Space Shuttle and quite recently SPICAV on Venus Express The spectrum is dominated by emissions from helium hydrogen oxygen and carbon lines and CO bands Localized emissions of OI at 1304 and 1356 A have been sporadically observed on the nightside and are likely caused by precipitation of auroral electrons in the wake of the planet We have developed a Monte Carlo code solving the Boltzmann equation for energetic electrons to calculate the energy distribution function and fluxes of primary and secondary auroral electrons and for photoelectrons The model is used to calculate the vertical distribution of the excitation rate of various excited states For optically thick transitions such as the 3P-3S triplet at 1304 A a radiative transfert code is used to calculate the emergent emission rate We find that the relative intensity of the oxygen and CO Cameron band emissions is a sensitive indicator of the energy of auroral electrons The observed values indicate that the mean energy is on the order of 10-50 eV Dayglow intensity and distributions are also compared with observed characteristics [less ▲]

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See detailActualisation et validation interne d’un outil d’aide à la décision clinique de l’encéphalopathie spongiforme bovine en Belgique
Plouvier, Bénédicte ULg; Berkvens, D.; Mennens, K. et al

in Epidémiologie et Santé Animale (2006), 50

The use of regression and classification trees is a usual decision support tool for diseases with low prevalence as well for diseases which diagnosis test not exist actually (emerging diseases). These ... [more ▼]

The use of regression and classification trees is a usual decision support tool for diseases with low prevalence as well for diseases which diagnosis test not exist actually (emerging diseases). These trees make it possible to classify observations (clinical and other) on the basis of a set of predictive variables (categorical or continuous). New data concerning the clinical suspicions of the bovine spongiform encephalopathy were collected in Belgium from November, 2002 until January, 2005. These data make it possible to update and estimate of previous performance characteristics of regression and classification trees. Several modifications of regression and classification tress are proposed and discussed in order to improve epidemiological passive network in Belgium. [less ▲]

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See detailHistone deacetylase 7 is involved in the control of angiogenesis by regulating platelet-derived growth factor-β
Mottet, Denis; Bellahcene, Akeila ULg; Deroanne, Christophe et al

Conference (2006)

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See detailLe dix-neuvième siècle, hélas. Sartre, entre romantisme et modernité
Denis, Benoît ULg

in Romantisme (2006), (131), 75-86

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See detailEtat de la question sur l'hyperactivité et les troubles attentionnels
Catale, Corinne ULg

Conference given outside the academic context (2006)

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See detailL'apport des revues et de la statistique à l'approche des réseaux
Dozo, Björn-Olav ULg; Purnelle, Gérald ULg

in Denis, Benoît; de Marneffe, Daphné (Eds.) Les Réseaux littéraires (2006)

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See detailLes Fonts de Liège. De l’art antique à l’art mosan : sources iconographiques et stylistiques
George, Philippe ULg

in Halleux, Robert; Xhayet, Geneviève (Eds.) Etudes sur les fonts baptismaux de Saint-Barthélemy à Liège, (2006)

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See detailEffect of cross country on plasma levels of myeloperoxidase in saddle ponies
Art, Tatiana ULg; Franck, Thierry ULg; Gangl, M. et al

in Abstracts book of iceep (2006)

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See detailSox 10 is not necessary for auditory neurons survival
Breuskin, I; Bodson; Thelen, Nicolas ULg et al

Poster (2006)

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See detailThe lipopeptides mycosubtilin and surfactin enhance spreading of Bacillus subtilis strains by their surface-active properties.
Leclere, Valerie; Marti, Romain; Bechet, Max et al

in Archives of microbiology (2006), 186(6), 475-83

The colonizing behaviour and the pellicle formation of Bacillus subtilis strains producing different families of lipopeptides were evaluated under several cultural conditions. The pattern of lipopeptides ... [more ▼]

The colonizing behaviour and the pellicle formation of Bacillus subtilis strains producing different families of lipopeptides were evaluated under several cultural conditions. The pattern of lipopeptides produced determined the architecture of the colony on a swarming medium as well as the flotation and the thickness of the pellicle formed at the air/liquid interface. The overproduction of mycosubtilin, a lipopeptide of the iturin family, led to increased spreading but had no effect on pellicle formation. A physico-chemical approach was developed to gain an insight into the mode of action of the biosurfactants facilitating the colonization. A relationship between surface tension of the culture medium and spreading of a lipopeptide non-producing strain, B. subtilis 168, was established. Goniometry was used to highlight the modification of the in situ wettability in the area where spreading was enhanced. On a solid medium, co-cultures of a surfactin producing with other strains showed a diffusion ring of the surfactin around the colony. This ring characterized by a higher wettability favoured the propagation of other colonies. [less ▲]

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