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See detailEXAP 15254-5 Extrapolation of height above 4m in partition of metal sandwich panels
Dumont, Fabien ULg; Wellens, Eric ULg

Conference (2013, March)

When testing the fire resistance of metal sandwich panels, the annex B of EN 15254-5 gives rules for the consequently allowed extension of span length. The processing of these rules requires that specific ... [more ▼]

When testing the fire resistance of metal sandwich panels, the annex B of EN 15254-5 gives rules for the consequently allowed extension of span length. The processing of these rules requires that specific measurements are carried out on joints between panels during the test. When a set of tests has been realised on panels of different thicknesses, but no measurement has been carried out on joints during these tests, the relevance of the following processing is analysed : 1. redo only the tests on panels of minimum and maximum thicknesses and carry out the measurement on joints ; 2. deduce the extended height allowed for these tests ; 3. interpolate these results to panels of intermediate thicknesses. [less ▲]

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See detailExcavation damaged zone modelling in claystone with coupled second gradient model
Collin, Frédéric ULg; Pardoen, Benoît ULg

in Yang (Ed.) Constitutive modeling of Geomaterials, Advances and applications (2012, October)

Galleries excavation leads to damage and significant properties changes of the host rock. The fracture structure of the excavation damaged zone created around the galleries remains nowadays a major issue ... [more ▼]

Galleries excavation leads to damage and significant properties changes of the host rock. The fracture structure of the excavation damaged zone created around the galleries remains nowadays a major issue especially in the context of underground storage. In order to correctly model the strain localisation, the second gradient local model (regularization method) is used within a hydro-mechanical modelling of a gallery excavation. The numerical results provide information about the strain localisation bands pattern. [less ▲]

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See detailExcavation damaged zone modelling including hydraulic permeability evolution in unsaturated argilaceous rock
Pardoen, Benoît ULg; Levasseur, Séverine ULg; Collin, Frédéric ULg

in 6th International Conference on Unsaturated Soils (2014, July)

The drilling of galleries induces damage propagation in the surrounding medium and creates the Excavation Damaged Zone (EDZ) in which the material properties are modified. The prediction of the fracture ... [more ▼]

The drilling of galleries induces damage propagation in the surrounding medium and creates the Excavation Damaged Zone (EDZ) in which the material properties are modified. The prediction of the fracture structure and flow properties evolution within this zone are major issues especially in the context of underground nuclear waste storage. Since experimental results indicate that shear strain localisation appears prior to fractures, we model the EDZ with strain localisation in shear band mode using the coupled local second gradient model. The evolution of the intrinsic hydraulic permeability inside the fractures is taken into consideration as well as the influence of gallery ventilation on the rock desaturation. The numerical results provide information about the damaged zone extension, structure and behaviour with good correspondence to in situ measurements and observations. [less ▲]

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See detailException de la caution de l'étranger demandeur
Moreau, Pierre ULg

in L'instance (2013)

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See detailException dilatoire pour faire inventaire et délibérer
Moreau, Pierre ULg

in L'instance (2013)

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See detailExceptional Carbon Uptake In European Forests During The Warm Spring Of 2007: A Data-Model Analysis
Delpierre, N.; Soudani, K.; Kostner, B. et al

in Global Change Biology (2009), 15(6), 1455-1474

Temperate and boreal forests undergo drastic functional changes in the springtime, shifting within a few weeks from net carbon (C) sources to net C sinks. Most of these changes are mediated by temperature ... [more ▼]

Temperate and boreal forests undergo drastic functional changes in the springtime, shifting within a few weeks from net carbon (C) sources to net C sinks. Most of these changes are mediated by temperature. The autumn 2006-winter 2007 record warm period was followed by an exceptionally warm spring in Europe, making spring 2007 a good candidate for advances in the onset of the photosynthetically active period. An analysis of a decade of eddy covariance data from six European forests stands, which encompass a wide range of functional types (broadleaf evergreen, broadleaf deciduous, needleleaf evergreen) and a wide latitudinal band (from 44 degrees to 62 degrees N), revealed exceptional fluxes during spring 2007. Gross primary productivity (GPP) of spring 2007 was the maximum recorded in the decade examined for all sites but a Mediterranean evergreen forest (with a +40 to +130 gC m(-2) anomaly compared with the decadal mean over the January-May period). Total ecosystem respiration (TER) was also promoted during spring 2007, though less anomalous than GPP (with a +17 to +93 gC m(-2) anomaly over 5 months), leading to higher net uptake than the long-term mean at all sites (+12 to +79 gC m(-2) anomaly over 5 months). A correlative analysis relating springtime C fluxes to simple phenological indices suggested spring C uptake and temperatures to be related. The CASTANEA process-based model was used to disentangle the seasonality of climatic drivers (incoming radiation, air and soil temperatures) and biological drivers (canopy dynamics, thermal acclimation of photosynthesis to low temperatures) on spring C fluxes along the latitudinal gradient. A sensitivity analysis of model simulations evidenced the roles of (i) an exceptional early budburst combined with elevated air temperature in deciduous sites, and (ii) an early relief of winter thermal acclimation in coniferous sites for the promotion of 2007 spring assimilation. [less ▲]

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See detailExceptional genetic variability of hepatitis B virus indicates that Rwanda is east of an emerging African genotype E/A1 divide
Hubschen, J M; Mugabo, J; Peltier, C A et al

in Journal of Medical Virology (2009), 81(3), 435-40

In Western Africa, hepatitis B virus (HBV) genotype E predominates throughout a vast crescent spanning from Senegal to Namibia and at least to the Central African Republic to the East. Although from most ... [more ▼]

In Western Africa, hepatitis B virus (HBV) genotype E predominates throughout a vast crescent spanning from Senegal to Namibia and at least to the Central African Republic to the East. Although from most of the eastern parts of sub-Saharan Africa only limited sets of strains have been characterized, these belong predominantly to genotype A. To study how far the genotype E crescent extends to the East, a larger number of HBV strains from Rwanda were analyzed. Phylogenetic analysis of 45 S fragment sequences revealed strains of genotypes A (n = 30), D (n = 10), C (n = 4), and B (n = 1). Twelve genotype A sequences formed a new cluster clearly separated from the reference strains of the known sub-genotypes. Thus, with four genotypes and at least six sub-genotypes and a new cluster of genotype A strains, HBV shows an exceptional genetic variability in this small country, unprecedented in sub-Saharan Africa. Despite this exceptional genetic variability, not a single genotype E virus was found indicating that this country does not belong to the genotype E crescent, but is east of an emerging African genotype E/A1 divide. [less ▲]

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See detailExceptional points for logic operations at the molecular level
Jaouadi, Amine; Desouter, Michèle ULg; Lefebvre, Roland et al

in Fortschritte der Physik = Progress of Physics (2013), 161(2-3), 162-177

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See detailExceptional simultaneous herpesvirus infections. Pityriasis rosea and recurrent varicella in an immunocompetent child
Nikkels, Arjen ULg; Tassoudji, Nazli ULg; Thirion, Laurence et al

in Journal of Pediatric Infectious Diseases (2006)

Dual cutaneous herpesvirus (alpha-alpha, alpha-beta infections are exceptional. We report the first case of a simultaneous alpha- and delta-herpesvirus infection corresponding to recurrent varicella and ... [more ▼]

Dual cutaneous herpesvirus (alpha-alpha, alpha-beta infections are exceptional. We report the first case of a simultaneous alpha- and delta-herpesvirus infection corresponding to recurrent varicella and human delta herpesviruses 6 and 7-associated pityriasis rosea in an 8-year-old immunocompetent boy. This condition likely represents a stroke of misfortune, although a special link between two herpesvirus infections cannot be formally excluded. [less ▲]

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See detailAn exceptional specimen of the early land plant Cooksonia paranensis, and a hypothesis on the life cycle of the earliest eutracheophytes
Gerrienne, Philippe ULg; Dilcher, D. L.; Bergamaschi, S. et al

in Review of Palaeobotany and Palynology (2006), 142(3-4), 123-130

An exceptionally large specimen of the early land plant Cooksonia paranensis Gerrienne et al. has been discovered from the type locality (Jackson de Figueiredo, Parana Basin, Brazil; early Lochkovian ... [more ▼]

An exceptionally large specimen of the early land plant Cooksonia paranensis Gerrienne et al. has been discovered from the type locality (Jackson de Figueiredo, Parana Basin, Brazil; early Lochkovian, Early Devonian). This nearly complete specimen consists of five dichotomous axes attached at their base to a small thalloid(?) structure. Each terminal axis segment ends in an expanded, cup-like, empty tip. Three interpretations of the specimen are proposed. (1) The whole specimen is a gametophyte of the Sciadopkyton-type, with a central area from which five axes depart; under this interpretation, the terminal cups are gametangiophores. (2) The basal structure represents the remains of a rhizome bearing five upright aerial axes, in which case the whole plant is a sporophyte. (3; our favoured hypothesis) The specimen is a cluster of five individual sporophytes still attached to the remains of a small female or bisexual gametophyte. In the latter case, this fossil is evidence that reduced thalloid gametophytes and branched axial sporophytes are plesiomorphic among the earliest eutracheophytes. We suggest that a major difference in life cycle defines a basal dichotomy in tracheophytes. Eutracheophyta, including all living vascular plants, have a heteromorphic, sporophyte dominant alternation of generations, whereas their extinct sister-group Rhymopsida (renamed here Paratracheophyta) is characterised by a more or less isomorphic alternations of generations. (c) 2006 Elsevier B.V. All rights reserved. [less ▲]

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See detailAn Exceptional X-ray View of the Young Open Cluster NGC 6231: What XMM-Newton Has Taught Us
Sana, H.; Gosset, Eric ULg; Rauw, Grégor ULg et al

in The X-ray Universe 2005 (2006, January 01)

Considered as the core of the Sco OB1 association, the young open cluster NGC 6231 harbours a rich O-type star population. In 2001, the XMM-Newton satellite targeted the cluster for a nominal duration of ... [more ▼]

Considered as the core of the Sco OB1 association, the young open cluster NGC 6231 harbours a rich O-type star population. In 2001, the XMM-Newton satellite targeted the cluster for a nominal duration of about 180 ks. Thanks to the detector sensitivity, the EPIC cameras provided an unprecedented X-ray view of NGC 6231, revealing about 600 point-like sources. In this contribution, we review the main results that have been obtained thanks to this unprecedented data set. Concerning the O-type stars, we present the latest developments related to the so-called 'canonical' Lx-Lbol relation. The dispersion around this relation might actually be much smaller than previously thought. In our data set, the sole mechanism that yields a significant deviation from this scheme is wind interaction. It is also the sole mechanism that induces a significant variation of the early-type star X-ray flux. In a second part of this contribution, we probe the properties of the optically faint X-ray sources. Most of them are believed to be low mass pre-main sequence stars. Their analysis provides direct insight into the star formation history of the cluster. [less ▲]

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See detailExceptions de nullité
Moreau, Pierre ULg

in L'instance (2013)

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See detailExceptions intellectuelles, ou comment Jean Borie et Henri Lefebvre ont évité le structuralisme
Provenzano, François ULg

in Etudes Françaises (2011), 47(1), 59-73

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See detailL'excès pondéral et l'obésité chez l'enfant
Guillaume, Michèle ULg; Burniat, W

in ONE (Ed.) Prévention et petite enfance : guide de médecine préventive du nourrisson et du jeune enfant (2004)

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See detailL'excès pondéral et l'obésité chez l'enfant, un défi pour la santé publique
Guillaume, Michèle ULg; Counet, Laurence ULg

in Enfant et nutrition. Guide à l'usage des professionnels. (2009)

Detailed reference viewed: 26 (7 ULg)