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See detailThe usefulness of VHR images for public administrations in an urban hilly region
Binard, Marc ULg; Cornet, Yves ULg; Donnay, Jean-Paul ULg

in Marçal, André (Ed.) "Global Developments in Environmental Earth Observation from Space" (2006)

This paper presents some results of the SPIDER project currently achieved in and around the city of Liège located in a hilly landscape. A Quick Bird image bundle product acquired on the 26th September ... [more ▼]

This paper presents some results of the SPIDER project currently achieved in and around the city of Liège located in a hilly landscape. A Quick Bird image bundle product acquired on the 26th September 2003 is used. Digital spatial data like Very High Resolution (VHR) satellite images could be provided to the public authorities of the Walloon region thanks to the Walloon cartographic gateway. In urban context and especially in hilly region, such images must be orthorectified using a Digital Surface Model (DSM). A 1 m resolution DSM was elaborated by exploiting all the 3D data available in the study area. Firstly, a TIN was generated from vector data (points, lines and polygons) selected, on the one hand, from the 1:50 000 (DTED-WGS) and the 1:10 000 (DTM- 10000, Top10v-GIS) cartographic database provided by the Belgian NGI and, on the other hand, from the 1:1 000 3D topographic database of the Walloon region (PICC). Then the TIN was rasterised and the DSM airborne LIDAR acquired along the main river-valleys is superimposed on the result. The ortho-image was then produced. The public authorities consider it as an end-product by itself which could be used in the place of the obsolete aerial orthophotos in the fast changing urban areas. Normally, the ortho-image of Liège should be available on the map server of the Walloon region in 2005, in order to check its usefulness for local and regional authorities. Moreover the local planning agency wish to take the opportunity of this study to update the spatial databases covering industrial and business development areas delineated on the urban plan. [less ▲]

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See detailCompte-rendu de R. GLASER, Klimageschichte Mitteleuropas. 1000 Jahre Wetter, Klima, Katastrophen, Darmstadt, 2001
Alexandre, Pierre ULg

in Revue Belge de Philologie et d'Histoire (2006), 84

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See detailImproved PRESS sequence for lactate detection in the human vitreous body
Balteau, Evelyne ULg; COLLIGNON, Nathalie ULg; Robe, Pierre ULg et al

in Proceedings of the International Society for Magnetic Resonance in Medicine (2006), 14

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See detailComment des théories didactiques permettent-elles de penser le transfert en mathématiques ou dans d'autres disciplines ?
Schneider, Marguerite ULg

in Recherches en Didactique des Mathématiques (2006), 26(1), 9-38

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See detailManifestations cutanées des pathologies endocriniennes
Quatresooz, Pascale ULg; Thirion, Laurence; Pierard, Claudine ULg et al

in Revue Médicale de Liège (2006), 61(2), 104-8

Some cutaneous lesions accompany or reveal endocrine disorders. Identifying the endocrinopathy is very important because it sometimes allows corrective rather than symptomatic treatment. The most ... [more ▼]

Some cutaneous lesions accompany or reveal endocrine disorders. Identifying the endocrinopathy is very important because it sometimes allows corrective rather than symptomatic treatment. The most frequenly involved diseases include thyrotoxicosis, hypothyroidism, the auto-immune disorders of thyroid, Cushing syndrome, Addison disease, acromegaly, androgen-dependent disorders, hypopituitarism, hypoparathyroidism, pseudohypoparathyroidism and diabetes mellitus. [less ▲]

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See detailComment j'explore... Une valeur élevée de calcitonine?
Rikir, Estelle ULg; Valdes Socin, Hernan Gonzalo ULg; Vroonen, Laurent ULg et al

in Revue Médicale de Liège (2006), 61(3), 195-200

This article describes a case of lung cancer with associated hypercalcitoninemia in a man with a goitre. The case raises the problem of the differential diagnosis between medullary thyroid carcinoma and a ... [more ▼]

This article describes a case of lung cancer with associated hypercalcitoninemia in a man with a goitre. The case raises the problem of the differential diagnosis between medullary thyroid carcinoma and a neuroendocrine neoplasm with ectopic calcitonin secretion. The article first reviews the physiology of calcitonin, then outlines the diagnostic tests that are required to investigate hypercalcitoninemia and finally discusses the interpretation of test results. [less ▲]

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See detailLe groupe des « bisons adossés » de Lascaux : étude de la technique de l’artiste par analyse de pigments
Vignaud, Colette; Salomon, Hélène ULg; Chalmin, Emilie et al

in Anthropologie (L') (2006)

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See detailDroit international privé européen
Boularbah, Hakim ULg; Nuyts, Arnaud; Watte, N.

in Journal des Tribunaux Droit Européen (2006)

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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 ▲]

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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 ▲]

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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 ▲]

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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 ▲]

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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 ▲]

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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 ▲]

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See detailSome theoritical and numerical features of strain gradient media regarded as micromorphic media
Caillerie, Denis; Chambon, René; Collin, Frédéric ULg

Conference (2006)

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