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Peer Reviewed
See detailEngineering the stability of a cold-active alpha-amylase
D'Amico, Salvino; Gerday, Charles ULg; Feller, Georges ULg

Poster (1999)

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See detailEngineering three-dimensional chains of porous nanoballs from a 1,2,4-triazole-carboxylate supramolecular synthon
Naik, A. D.; Dǐrtu, M. M.; Léonard, Alexandre ULg et al

in Crystal Growth & Design (2010), 10(4), 1798-1807

Glycine ethyl ester was recruited in an amine exchange process based on a transamination to afford ethyl 4H-1,2,4-triazol-4-yl-acetate (L1). The acid hydrolysis of this molecule leads to quantitative ... [more ▼]

Glycine ethyl ester was recruited in an amine exchange process based on a transamination to afford ethyl 4H-1,2,4-triazol-4-yl-acetate (L1). The acid hydrolysis of this molecule leads to quantitative isolation of 4H-1,2,4-triazol-4-yl acetic acid (L2). This versatile synthon crystallizes in a noncentrosymmetric orthorhombic space group (Fdd2) with Z = 16. This crystal structure is the first one for a 1,2,4-triazole ligand constructed from an amino acid derivative. The strong intermolecular hydrogen bonding O-HN (2.570(3)Å) connects molecules into infinite one-dimensional chains running parallel to the b axis, and the structure is further extended by numerous but moderate strength hydrogen bonds (C-HO). Prominent features of L2 are the presence of diverse potential coordinating groups such as carboxylic acid and triazole on the same framework as well as the inherent flexibility of the ligand backbone. Reaction of L1 or L2 with aq. Cu(BF 4) 2 in aq. DMF gives dark blue crystals which crystallize in a noncentrosymmetric, cubic space group (I4̌3m) and which were formulated as [Cu 3(μ 3-O)(L2) 3(H 2O) 3]BF 4H 2O (C1). The self-assembly of C 3-symmetric, μ 3-oxo bridged triangular tricopper secondary building blocks (SBB) formed an unique architecture which encompasses voluminous nanoball voids of 1 nm. The total solvent accessible volume is 4477.5 Å 3 which accounts for 48% of the cell volume. The crystal network stability was studied by thermogravimetric analysis (TGA)'differential thermal analysis (DTA) and scanning electron microscopy (SEM) analyses. Sorption properties and gas storage capacities were measured by BET. C1 shows no preference for N 2(g), but a reversible H 2(g) uptake of 21 cm 3/g was observed. Morphology analysis by SEM on single crystals of C1 shows "ultrawellś of square shape irregularly located on the surface, whose origin is due to desolvation or crystal defects. Mercury porosimetry measurements reveal pore size distribution with a diameter ranging from 350 nm to 2.3 μm © 2010 American Chemical Society. [less ▲]

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See detailEnglish and French Canadians, Flemish and Francophone Belgians. The Linguistic Composition of the Canadian and Belgian Federal Cabinet
Reuchamps, Min ULg

Conference (2007, April 27)

In divided societies, such as Belgium and Canada, the federal principle and consociational power-sharing have been implemented in order to accommodate ethno-linguistic communities. The combination of ... [more ▼]

In divided societies, such as Belgium and Canada, the federal principle and consociational power-sharing have been implemented in order to accommodate ethno-linguistic communities. The combination of Daniel Elazar’s seminal work on federalism in plural societies and of Arend Lijphart’s on consociationalism offers a theoretical framework which can be usefully applied to study the distribution of power between the two main ethno-linguistic communities at the highest level of the state. Using the existing “model of points” and the author’s own “model of the weight of ministerial portfolios”, this paper explores the linguistic composition of the federal governments in both countries over the last thirty years (1970-2006). Whereas the Belgian Constitution has required since 1970 that the federal cabinet be staffed by an equal number of Flemish and Francophone ministers, the Canadian Constitution does not require such a linguistic parity and therefore leaves a greater freedom for the composition of the government. On this background, two logics may explain the linguistic composition in the two cases: a logic of transaction between the two main communities and a logic of representation. The paper opens, on the one hand, with the elaboration of the theoretical framework combining the works of Elazar and Lijphart and, on the other hand, with the construction of the two models. The framework and the models are applied to each case, emphasizing the logic of transaction and the logic of representation. On the basis of this examination, this paper concludes by suggesting that Flemish and Francophone Belgians as well and English and French Canadians benefit from the composition of the federal cabinet. The conclusion opens—new—ways and means to hinder political tensions in plural societies through the institutional arrangement. [less ▲]

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See detailEnglish and Spanish Size Noun-constructions, a locus of ongoing grammaticalization
Brems, Lieselotte ULg; Verveckken, Katrien

Conference (2008)

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See detailEnglish and Spanish Size Noun-constructions, a locus of ongoing grammaticalization
Brems, Lieselotte ULg; Verveckken, Katrien

Conference (2008)

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See detailEnglish language immersion in french-speaking children : does learning to read have an impact on the subsequent acquisition of french orthographic code ?
Nicolay, Anne-Catherine ULg; Fantauzzi, A.; Sadzot, Agnès ULg et al

Poster (2006, May 19)

Apprendre à lire dans une langue n’interfère pas avec l’apprentissage de la lecture dans une autre langue mais prépare plutôt le terrain pour apprendre à lire dans une autre langue. Comme dans le langage ... [more ▼]

Apprendre à lire dans une langue n’interfère pas avec l’apprentissage de la lecture dans une autre langue mais prépare plutôt le terrain pour apprendre à lire dans une autre langue. Comme dans le langage oral, il peut y avoir quelques « mixing » de prononciation au niveau des mots qui disparaissent progressivement au fur et à mesure que les langues se compartimentalisent. Avec le temps, l’enfant apprendra également que des mots qui s’écrivent de la même manière dans les deux langues peuvent se prononcer de manière différente. Une recherche menée sur des enfants francophones Belges suivant un programme d’immersion scolaire en anglais et ayant appris à lire en anglais confirment ces observations. 150 enfants âgés de 7 à 12 ans fréquentant ce programme ont été testés sur leurs compétences en lecture du français (décodage et compréhension). Leurs performances (type et nombre d’erreurs, vitesse de lecture) ont été comparées à celles d’enfants francophones fréquentant un enseignement unilingue. Leurs habiletés métaphonologiques (manipulation de la rime et du phonème) ont également été testées. [less ▲]

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See detailEnglish Renaissance Lyrics
Delrez, Marc ULg

Learning material (2004)

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See detailL'engoument pour la "Cène" de Léonard de Vinci à la cour de France, sous les règnes de Louis XII et de François Ier
Fagnart, Laure ULg

in Bulletin des amis du château et des musées de Blois (2002), 33

Cette contribution présente les copies de la "Cène" de Léonard de Vinci qui ont été réalisées à la demande de Français dans la première moitié du XVIe siècle. Elle s’attache à comprendre comment et ... [more ▼]

Cette contribution présente les copies de la "Cène" de Léonard de Vinci qui ont été réalisées à la demande de Français dans la première moitié du XVIe siècle. Elle s’attache à comprendre comment et pourquoi autant de Français, souvent en poste dans l’administration française à Milan, ont commandé des copies du chef-d’œuvre du maître italien, définissant de ce fait les mécanismes de l’engouement pour la peinture murale à la cour de France, sous les règnes de Louis XII et de François Ier. [less ▲]

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See detailLes engrais enrichis en sélénium: une alternative pour améliorer le statut en sélénium du bovin
Cabaraux, Jean-François ULg; Dotreppe, Olivier ULg; Hornick, Jean-Luc ULg et al

Article for general public (2006)

Le Sélénium (Se) est un oligo-élément indispensable au bon fonctionnement de l'organisme, notamment chez le bovin. Différents éléments plaident pour l’existence de déficits en Se dans le cheptel bovin et ... [more ▼]

Le Sélénium (Se) est un oligo-élément indispensable au bon fonctionnement de l'organisme, notamment chez le bovin. Différents éléments plaident pour l’existence de déficits en Se dans le cheptel bovin et particulièrement dans les troupeaux allaitants. Solutions injectables, bolus, supplémentation des rations… différentes méthodes permettent d’assurer un statut en Se correct chez l’animal. Une autre alternative consiste à enrichir les aliments produits au niveau de l’exploitation en utilisant des engrais enrichis en Se. Le Service de Nutrition de la Faculté de Médecine Vétérinaire a testé l’effet de ce type d’engrais sur la teneur en Se dans les aliments produits et sur le statut Se d’un troupeau de vaches allaitantes [less ▲]

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See detailL'engraissement de la vache de réforme Blan-Bleu Belge
Cabaraux, Jean-François ULg

Master of advanced studies dissertation (2001)

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See detailEngraissement du taurillon Blanc Bleu Belge culard. Enseignements pratiques
Raskin, Pascale; Van Eenaeme, Christian ULg; Minet, Vincent et al

Book published by Ministère des Classes Moyennes et de l'Agriculture - 1ère édition, mai 1997 (1997)

Detailed reference viewed: 101 (5 ULg)
See detailEngraissement du taurillon Blanc-Bleu belge
Minet, Vincent; Van Eenaeme, Christian ULg; Raskin, Pascale et al

in Agricontact (1997), 291

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See detailEnhanced Activity of Meprin-a, a Pro-Migratory and Pro-Angiogenic Protease, in Colorectal Cancer
Lottaz, Daniel; Maurer, Christoph A; Noël, Agnès ULg et al

in PLoS ONE (2011), 6(11), 26450

Meprin-α is a metalloprotease overexpressed in cancer cells, leading to the accumulation of this protease in a subset of colorectal tumors. The impact of increased meprin-α levels on tumor progression is ... [more ▼]

Meprin-α is a metalloprotease overexpressed in cancer cells, leading to the accumulation of this protease in a subset of colorectal tumors. The impact of increased meprin-α levels on tumor progression is not known. We investigated the effect of this protease on cell migration and angiogenesis in vitro and studied the expression of meprin-α mRNA, protein and proteolytic activity in primary tumors at progressive stages and in liver metastases of patients with colorectal cancer, as well as inhibitory activity towards meprin-α in sera of cancer patient as compared to healthy controls. We found that the hepatocyte growth factor (HGF)- induced migratory response of meprin-transfected epithelial cells was increased compared to wild-type cells in the presence of plasminogen, and that the angiogenic response in organ-cultured rat aortic explants was enhanced in the presence of exogenous human meprin-α. In patients, meprin-α mRNA was expressed in colonic adenomas, primary tumors UICC (International Union Against Cancer) stage I, II, III and IV, as well as in liver metastases. In contrast, the corresponding protein accumulated only in primary tumors and liver metastases, but not in adenomas. However, liver metastases lacked meprin-α activity despite increased expression of the corresponding protein, which correlated with inefficient zymogen activation. Sera from cancer patients exhibited reduced meprin-α inhibition compared to healthy controls. In conclusion, meprin-α activity is regulated differently in primary tumors and metastases, leading to high proteolytic activity in primary tumors and low activity in liver metastases. By virtue of its pro-migratory and pro-angiogenic activity, meprin-α may promote tumor progression in colorectal cancer. [less ▲]

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See detailEnhanced ALE Data Transfer Strategy for Explicit and Implicit Thermomechanical Simulations of High-Speed Processes
Boman, Romain ULg; Ponthot, Jean-Philippe ULg

in International Journal of Impact Engineering (2013), 53

The Arbitrary Lagrangian Eulerian (ALE) formalism, which allows the computational grid to move regardless of thematerial deformation, is a convenient way to avoid distortedmeshes in finite element ... [more ▼]

The Arbitrary Lagrangian Eulerian (ALE) formalism, which allows the computational grid to move regardless of thematerial deformation, is a convenient way to avoid distortedmeshes in finite element simulations. One crucial step of the ALE algorithm is the data transfer between the Lagrangian and the Eulerian meshes. In this paper, an enhanced transfer method is presented. It can handle complex finite elements which are integrated with more than one Gauss point. This method can thus be used either with an explicit or with an implicit time integration scheme. Choosing the adequate order of accuracy and the most appropriate number of physical fields to be transferred is always a compromise between the speed and the precision of the model. For example, some variables may be sometimes ignored during the transfer in order to decrease the CPU time. Therefore, the most effective way to use such an algorithm is demonstrated in this work by revisiting a classical ALE benchmark, the Taylor impact. An implicit thermomechanical ALE simulation of a high-speed tensile test is also presented and is compared to experimental results from the literature. [less ▲]

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