Publications ORBi OA
Bookmark and Share    
Full Text
See detailDroit international privé européen
Boularbah, Hakim ULg; Nuyts, Arnaud; Watte, N.

in Journal des Tribunaux Droit Européen (2006)

Detailed reference viewed: 14 (1 ULg)
Full Text
Peer Reviewed
See detailPoro Hypo Plastic analysis of the progressive excavation of the Mol URL connecting Gallery
Desrues, Jacques; Bésuelle, Pierre; Coll, Cécile et al

in Van Cotthem, Alain; Charlier, Robert; Thimus, Jean-Francois (Eds.) EUROCK 2006 - Multiphysics Coupling and Long Term Behaviour in Rock Mechanics (2006)

In the framework of a Euratom research program devoted to Nuclear Waste deposition security assessment, a numerical simulation of the excavation of a gallery in the Boom Clay layer at Mol (Belgium) has ... [more ▼]

In the framework of a Euratom research program devoted to Nuclear Waste deposition security assessment, a numerical simulation of the excavation of a gallery in the Boom Clay layer at Mol (Belgium) has been performed In order to model the progressive excavation and lining installation process, a special sequence of desactivation/activation of sets of elements was elaborated. In particular, this numerical strategy allowed to take into account the fact that, due to the deformation of the massif as the excavation progresses, the material to be excavated once the front has reached a given position into the rock mass cannot be defined a priori, but is resulting of the modelling of the previous phases up to the present one. [less ▲]

Detailed reference viewed: 48 (6 ULg)
Full Text
Peer Reviewed
See detailEvi1 is specifically expressed in the distal tubule and duct of the Xenopus pronephros and plays a role in its formation.
Van Campenhout, Claude; Nichane, Massimo; Antoniou, Aline et al

in Developmental Biology (2006), 294(1), 203-19

The ecotropic viral integration site 1 (Evi1) and related MEL1 (MDS1/Evi1-like gene 1) genes are zinc finger oncogenic transcription factors involved in myeloid leukaemia. Here, we show that in Xenopus ... [more ▼]

The ecotropic viral integration site 1 (Evi1) and related MEL1 (MDS1/Evi1-like gene 1) genes are zinc finger oncogenic transcription factors involved in myeloid leukaemia. Here, we show that in Xenopus, Evi1 and MEL1 have partially overlapping restricted embryonic expression profiles. Within the pronephros, Evi1 and MEL1 are sequentially expressed within the distal tubule and duct compartments, Evi1 transcription being detected prior to any sign of pronephric morphogenesis. In the pronephros of zebrafish embryos, Evi1 expression is restricted to the posterior portion of the duct, the anterior portion having characteristics of proximal tubules. In the Xenopus pronephros, Evi1 expression is upregulated by retinoid signaling and repressed by overexpression of xWT1 and by Notch signaling. Overexpression of Evi1 from late neurula stage specifically inhibits the expression of proximal tubule and glomus pronephric markers. We show that the first zinc finger and CtBP interaction domains are required for this activity. Overexpression of a hormone-inducible Evi1-VP16 antimorphic fusion with activation at neurula stage disrupts distal tubule and duct formation and expands the expression of glomus markers. Although overexpression of this construct also causes in many embryos a reduction of proximal tubule markers, embryos with expanded and ectopic staining have been also observed. Together, these data indicate that Evi1 plays a role in the proximo-distal patterning of the pronephros and suggest that it may do so by functioning as a CtBP dependent repressor. [less ▲]

Detailed reference viewed: 30 (1 ULg)
Full Text
Peer Reviewed
See detailSesn1 is a novel gene for left-right asymmetry and mediating nodal signaling.
Peeters, Hilde; Voz, Marianne ULg; Verschueren, Kristin et al

in Human Molecular Genetics (2006), 15(22), 3369-77

Remarkable progress has been made in understanding the molecular mechanisms underlying left-right asymmetry in vertebrate animal models but little is known on left-right axis formation in humans ... [more ▼]

Remarkable progress has been made in understanding the molecular mechanisms underlying left-right asymmetry in vertebrate animal models but little is known on left-right axis formation in humans. Previously, we identified SESN1 (also known as PA26) as a candidate gene for heterotaxia by positional cloning of the breakpoint regions of a de novo translocation in a heterotaxia patient. In this study, we show by means of a zebrafish sesn1-knockdown model that Sesn1 is required for normal embryonic left-right determination. In this model, developmental defects and expression data of genes implicated in vertebrate left-right asymmetry indicate a role for Sesn1 in mediating Nodal signaling. In the lateral plate mesoderm, Nodal signaling plays a central role in left-right axis formation in vertebrates and is mediated by FoxH1 transcriptional induction. In line with this, we show that Sesn1 physically interacts with FoxH1 or a FoxH1-containing complex. Mutation analysis in a panel of 234 patients with isolated heterotaxia did not reveal mutations, indicating that these are only exceptional causes of human heterotaxia. In this study, we identify SESN1 as an indispensable gene for vertebrate left-right asymmetry and a new player in mediating Nodal signaling. [less ▲]

Detailed reference viewed: 25 (5 ULg)
Full Text
Peer Reviewed
See detailDoit-on encore recommander le vaccin BCG?
Collette, Georges ULg; Bourhaba, Maryam ULg; Moutschen, Michel ULg

in Revue Médicale de Liège (2006), 61(5-6, May-Jun), 430-2

The BCG vaccine has demonstrated its efficacy to protect young children from severe extrapulmonary forms of tuberculosis. Nevertheless, the immunity induced by the vaccine disappears in adults and cannot ... [more ▼]

The BCG vaccine has demonstrated its efficacy to protect young children from severe extrapulmonary forms of tuberculosis. Nevertheless, the immunity induced by the vaccine disappears in adults and cannot be boosted by readministration of BCG. Adverse effects of BCG are rare, but potentially dangerous (i.e. disseminated vaccinal infections) and they justify the fact that BCG should not be administered anymore in Western European countries where the incidence of pediatric tuberculous meningitis is very low. The vaccine is still recommanded for children living in countries with high tuberculosis prevalence and for resident children leaving Belgium for these countries. [less ▲]

Detailed reference viewed: 43 (1 ULg)
Full Text
Peer Reviewed
See detailSuction and time effects on the behaviour of a reservoir chalk
Priol, Grégoire; De Gennaro, Vincenzo; Delage, Pierre et al

in Van Cotthem, Alain; Charlier, Robert; Thimus, Jean-François (Eds.) EUROCK 2006 - Multiphysics Coupling and Long Term Behaviour in Rock Mechanics (2006)

Oil reservoir rocks contain various immiscible fluids (oil, water and gas) and they are submitted to elevated temperatures in the oilfield. Hence, they exhibit a typical coupled behaviour where ... [more ▼]

Oil reservoir rocks contain various immiscible fluids (oil, water and gas) and they are submitted to elevated temperatures in the oilfield. Hence, they exhibit a typical coupled behaviour where multiphysics and coupled Thermo-Hydro-Mechanical aspects are predominant. This paper presents some results from researches carried out within the PASACHALK 2 European funded collaborative research. In this research dedicated to subsidence problems in the North sea Ekofisk oilfield, the behaviour of a reservoir chalk containing two immiscible fluids (an organic non polar fluid and water) is considered within the framework of the mechanics of unsaturated soils (no temperature effects considered). In order to account for the mechanical coupled effects related to the two pore fluids, the oil-water suction was considered as an independent stress variable. The paper presents some experimental results describing the combined effect of suction and time on the isotropic compression behaviour of the chalk. A viscoelastoplastic constitutive model based on one hand on the Barcelona BBM elastoplastic model for unsaturated and on the other hand on Perzina’s approach of viscous behaviour of soils is also presented and validated against experimental evidence. [less ▲]

Detailed reference viewed: 86 (2 ULg)
Full Text
See detailCoupled modelling of an excavation in a brittle formation
Collin, Frédéric ULg; Li, Xian Ling; Chambon, René et al

Conference (2006)

This paper is concerned with the coupling effects existing between the mechanical problem and the water diffusion process during an excavation, in relation with the nuclear waste disposal concepts. The ... [more ▼]

This paper is concerned with the coupling effects existing between the mechanical problem and the water diffusion process during an excavation, in relation with the nuclear waste disposal concepts. The hydromechanical coupling effects are first evidenced. Then, the permeability variation with damage is studied. Finally, different kind of flow boundary condition are considered. Their influence on the cavity convergence is highlighted and their effect on strain localisation process as well. [less ▲]

Detailed reference viewed: 16 (1 ULg)
Full Text
See detailSome theoritical and numerical features of strain gradient media regarded as micromorphic media
Caillerie, Denis; Chambon, René; Collin, Frédéric ULg

Conference (2006)

Detailed reference viewed: 13 (1 ULg)
Full Text
See detailObservational results for northern and southern (candidate) gamma Doradus stars .
De Cat, P.; Goossens, K.; Bouckaert, F. et al

in Memorie della Società Astronomica Italiana : Journal of the Italian Astronomical Society (2006), 77

We report on observational results obtained for 78 objects originally classified as bona-fide or candidate gamma Doradus stars. For the southern objects, we gathered echelle spectra with the CORALIE ... [more ▼]

We report on observational results obtained for 78 objects originally classified as bona-fide or candidate gamma Doradus stars. For the southern objects, we gathered echelle spectra with the CORALIE spectrograph attached to the Euler telescope in 1998-2003 and/or Johnson-Cousins B,V,I_c observations with the MODULAR photometer attached to the 0.5-m SAAO telescope in 1999-2000. For the northern objects, we obtained Geneva U,B,B_1,B_2,V,V_1,G observations with the P7 photometer attached to the 1.2-m Mercator telescope in 2001-2004. At least 15 of our objects are binaries, of which 7 are new. For 6 binaries, we determined the orbit for the first time. At least 17 objects show profile variations and at least 12 objects are multiperiodic photometric variables. Our results allow us to upgrade 11 objects to bona-fide gamma Doradus stars and to downgrade 8 objects to constant up to the current detection limits. Mode identification is still ongoing, but so far, only l = 1 and 2 modes have been identified. [less ▲]

Detailed reference viewed: 9 (1 ULg)
Full Text
Peer Reviewed
See detailAnalysis of buildings height computed on a DSM generated from a VHR satellite stereopair
Binard, Marc ULg; Devriendt, D.; Cornet, Yves ULg et al

in Hostert, P.; Damm, A.; Schiefer, S. (Eds.) Proceedings of the First Workshop of the EARSeL Special Interest Group on Urban Remote Sensing "Challenges and Solutions" (2006)

At the final meeting of the SPIDER project, the users wanted to know if it was possible to evaluate the building height or the number of floors, from the DSM obtained from a VHR satellite stereopair ... [more ▼]

At the final meeting of the SPIDER project, the users wanted to know if it was possible to evaluate the building height or the number of floors, from the DSM obtained from a VHR satellite stereopair. Combined with the 2D delineation of the buildings – for example coming from the cadastre register - this information could be useful in urban studies – e.g. population density assessment - or to generate quasi realistic 3D views. In this example, the DSM is extracted from an IKONOS stereopair (DSMsat) on the hilly area of Liège in Belgium. It is used in combination with a 3D vector file. On the one hand, this file is used for the 2D delineation of the buildings. On the other hand, the third dimension provided by this file is also exploited for the assessment of the extracted building height. Moreover LIDAR data are also available over the test area, permitting the creation of a reference DSM (DSMref). * The first step of the process consists in the determination of the ground altitude around the buildings. A procedure was setup in order to compute it and to generate the DTM for the reference and satellite data (DTMref and DTMsat). * The second step consists in the extraction of statistics, for every building (min, max, mean, etc.) as well from the DSMsat and DSMref, as from the DTMsat and DTMref. The analysis shows that the satellite approach globally underestimates the building height of about 4 m. These results are discussed regarding building height versus the area and the heterogeneity of the roof height. [less ▲]

Detailed reference viewed: 56 (6 ULg)
Full Text
See detailDe la littérature industrielle au poème populaire moderne. Filtrages médiatiques et littéraires de la culture de masse au XIXe siècle
Durand, Pascal ULg

in Mollie, Jean-Yves; Sirinelli, Jean-François (Eds.) Culture de masse et culture médiatique en Europe et dans les Amériques (1860-1940) (2006)

Detailed reference viewed: 58 (5 ULg)
Full Text
Peer Reviewed
See detailHydrogeological mapping of the Walloon region (Belgium).
Bouezmarni, Mohamed ULg

in Proceedings of the 5th european congress on regional geoscientific cartography and information systems. (2006)

Detailed reference viewed: 9 (2 ULg)
Full Text
Peer Reviewed
See detailRestudy of the Lower Carboniferous Scaphopoda described by De Koninck (1843, 1883)
Godefroid, Jacques; Mottequin, Bernard ULg; Yochelson, Ellis

in Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Sciences de la Terre (2006), 76

The fossils which De Koninck described and illustrated as members of the molluscan Class Scaphopoda have been reexamined. For the first time, photographs of these specimens are presented. Scaphopod shells ... [more ▼]

The fossils which De Koninck described and illustrated as members of the molluscan Class Scaphopoda have been reexamined. For the first time, photographs of these specimens are presented. Scaphopod shells show only a limited number of morphologic features and for most of these species, the details are lacking which would indicate that the fossils belong undoubtedly in the Scaphopoda. The study suggests that most of the named species may not be Scaphopoda; these species are assigned to informal groupings, ranging from Incertae sedis, through "worm tubes" to "probably Scaphopoda". Only one specimen may be identified without question as a member of the scaphopods. [less ▲]

Detailed reference viewed: 68 (12 ULg)
Full Text
Peer Reviewed
See detailRésumé CEDH, 11 octobre 2005, NA et autres c. Turquie
Delnoy, Michel ULg

in Aménagement - Environnement (2006), 2

Detailed reference viewed: 18 (1 ULg)
Full Text
See detailGenetic evaluation of female fertility for Walloon dairy and dual purpose cows using a parity random regression model: first results
Mayeres, Patrick; Vanderick, Sylvie ULg; Croquet, Coraline et al

in INTERBULL Bulletin (2006), 34

Detailed reference viewed: 21 (6 ULg)
Full Text
Peer Reviewed
See detail“Ben n’en vl’a d’eune Allégorie”. Allégorie et langue peuple : de Rictus à Mallarmé
Durand, Pascal ULg

in Cahiers Stéphane Mallarmé (2006), 3

Detailed reference viewed: 31 (12 ULg)