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See detailA partial hybrid stress solid-shell element for the analysis of laminated composites
Rah, Kamran; Van Paepegem, Wim; Habraken, Anne ULg et al

in Computer Methods in Applied Mechanics and Engineerinrg (2011), 200(49-52), 35263539

In this paper a low order partial hybrid stress solid-shell element based on the composite energy functional for the analysis of laminated composite structures is presented. This solid-shell element has ... [more ▼]

In this paper a low order partial hybrid stress solid-shell element based on the composite energy functional for the analysis of laminated composite structures is presented. This solid-shell element has eight nodes with only displacement degrees of freedoms, and three-dimensional constitutive models can be directly employed in the present formulation without any additional treatment. The assumed interlaminar stress field provides very accurate interlaminar stress calculation through the element thickness. These elements can be stacked on top of each other to model multilayer structures, fulfilling the interlaminar stress continuity at the interlayer surfaces and zero traction conditions on the top and bottom surfaces of the laminate. The present solid-shell does not show the transverse shear, trapezoidal and thickness locking phenomenon. [less ▲]

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See detailA new Barremian (Early Cretaceous) ichthyosaur from western Russia
Fischer, Valentin ULg; Masure, Edwige; Arkhangelsky, Maxim et al

in Journal of Vertebrate Paleontology (2011), 31(5), 1010-1025

A new ophthalmosaurid ichthyosaur, Sveltonectes insolitus gen. et sp. nov., is described from a sub-complete and three-dimensionally preserved specimen from the late Barremian of western Russia. This new ... [more ▼]

A new ophthalmosaurid ichthyosaur, Sveltonectes insolitus gen. et sp. nov., is described from a sub-complete and three-dimensionally preserved specimen from the late Barremian of western Russia. This new taxon is supported by 11 cranial, dental, and postcranial autapomorphies, and is also characterized by features previously considered as autapomorphic for some other Ophthalmosauridae, such as a processus narialis on the prefrontal and relatively long hindfins with pre- and postaxial accessory digits. We conducted a new phylogenetic analysis of Thunnosauria, which supports a ‘Stenopterygius-origin’ for Ophthalmosauridae. Sveltonectes is regarded as the sister taxon of Aegirosaurus, which shares a similar skull roof construction. Contrary to most other Cretaceous ichthyosaurs, Sveltonectes is characterized by delicate and sharply pointed teeth, confirming that the Ophthalmosauridae were ecologically highly diversified during the Early Cretaceous [less ▲]

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See detailCoping with Minority Status: Responses to Exclusion and Inclusion
Martiniello, Marco ULg

in Contemporary Sociology: a Journal of Reviews (2011), 40(2), 158-159

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See detailNotched Specimens Fracture Prediction with an Advanced GTN Model
Fansi Tchonko, Joseph ULg; Ben Bettaieb, Mohamed ULg; Balan, Tudor et al

in Key Engineering Materials [=KEM] (2011), 488-489

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See detailLa tradizione fiorentina della Supplicatione d’Italia al re di Francia. Con una nuova edizione critica
Moreno, Paola ULg

in Filologia e Critica (2011), XXXV(2), 1-33

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See detailLe Michelsberg de Pont-de-Bonne (province de Liège, Belgique)
Delye, Emmanuel ULg; Gilson, Simon-Pierre; Noiret, Pierre ULg

in Revue Archéologique de Picardie (2011)

Since the beginning of research on the éperon barré of Pont-de-Bonne (Modave, Belgium), we have recovered artefacts attributed to the Middle Neolithic. More recently, during excavation of the entrance ... [more ▼]

Since the beginning of research on the éperon barré of Pont-de-Bonne (Modave, Belgium), we have recovered artefacts attributed to the Middle Neolithic. More recently, during excavation of the entrance system of the fortification, a pot hole and a waste accumulation zone have been analysed. These structures contained abundant archaeological material (ceramic sherd, lithic and bone artefact and fauna). Three radiometric dates have been obtained. The ceramic assemblage is typical of the Belgian Michelsberg and a decorated vase shows Bischheim affinities. [less ▲]

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See detailLa famine Ruzagayura (Rwanda, 1943-1944): causes, conséquences et réactions des autorités
Singiza, Dantès ULg

Master's dissertation (2011)

Notre mémoire de Master en histoire à finalité approfondie, consacré à l’étude de la famine Ruzagayura (Rwanda, 1943-1944), a été soutenu à l’Université de Liège en septembre 2011. Dirigé par Catherine ... [more ▼]

Notre mémoire de Master en histoire à finalité approfondie, consacré à l’étude de la famine Ruzagayura (Rwanda, 1943-1944), a été soutenu à l’Université de Liège en septembre 2011. Dirigé par Catherine Lanneau, chargée de cours, il a également bénéficié des conseils et orientations de deux lecteurs, les Professeurs Francis Balace et Philippe Raxhon. Nous avons tenté d’y répondre aux principales questions que pose cette famine : quelles en furent les causes, le domaine d’extension, la durée et les conséquences à court et moyen terme ? Quelles furent les réactions des différentes autorités, locales et mandataires, mais également des missionnaires face à cette situation d’urgence ? Parmi les principales sources exploitées, mentionnons la correspondance et les rapports annuels conservés aux Archives africaines du Ministère des Affaires étrangères belge, la correspondance de l’ancien ministre des Colonies Albert de Vleeschauwer, conservée au KADOC mais aussi la correspondance et les diaires des missionnaires Pères Blancs et Sœurs Blanches, consultés à Rome. Enfin, des témoins ont pu être interrogés et ont contribué à enrichir ce mémoire de leurs souvenirs. La famine Ruzagayura est imputable à divers facteurs : la sécheresse, les travaux de l’effort de guerre et les agents destructeurs, comme le mildiou et la rhizoctonie. Elle est aggravée par les réquisitions de vivres et du bétail. La famine commence vers le mois d’octobre 1943 et se répand sur presque toute l’étendue du pays. Les autorités apprennent son existence quelque temps après son éclatement. Certains fonctionnaires, tant belges que rwandais, dissimulent son existence. D’autres nient sa réalité, ce qui leur attire les reproches de la part du résident Jean Paradis. Quant à celui-ci, il ne relaie pas non plus les informations en sa possession au vice-gouverneur général Eugène Jungers. Plus que des reproches, ce comportement lui vaut d’être destitué et muté au Congo par le vice-gouverneur général. Celui-ci aurait en effet peu apprécié d’apprendre l’existence de la famine au Rwanda lors d’un voyage anodin dans ce pays. Il le reproche également au roi Mutara III Rudahigwa. Une fois la famine reconnue, l’administration coloniale organise le ravitaillement en vivres. Elle confie leur distribution aux missionnaires qui encadrent en même temps les centres d’accueil d’affamés. Les chefs et les sous-chefs fournissent les vaches laitières et les vaches de boucherie pour nourrir la population. Celle-ci reçoit également des houes, de nouvelles semences de vivres et des boutures de manioc et de patates douces. De ce fait, elle reprend, sous la supervision des chefs rwandais, les cultures de champs et de marais en janvier 1944. La pluie tombant régulièrement, les récoltes augmentent et la situation vivrière se redresse. Les centres d’accueil ferment vers la deuxième moitié de 1944. La population restée démunie est convoyée dans les localités de Gishari et de Mokoto du territoire de Masisi, au Congo belge. La famine Ruzagayura a entraîné in fine un nombre important de décès, évalué à plusieurs dizaines de milliers de personnes. Elle a également provoqué d’importants déplacements de population. Par ailleurs, elle a poussé certaines personnes à voler des vivres pour subsister et s’est donc soldée par un accroissement de la criminalité. Son intensité et son extension au pays, associées aux travaux de l’effort de guerre, aux réquisitions de vivres et aux autres travaux agricoles, ont contrarié la population rwandaise au point de la pousser à s’opposer à l’autorité de ses chefs, du roi Mutara, de l’administration mandataire et des missionnaires. Certains en seraient mêmes arrivés à rêver de l’émancipation du pays. [less ▲]

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See detailPopulation of nonnative States of lysozyme variants drives amyloid fibril formation.
Buell, Alexander K.; Dhulesia, Anne; Mossuto, Maria F. et al

in Journal of the American Chemical Society (2011), 133(20), 7737-43

The propensity of protein molecules to self-assemble into highly ordered, fibrillar aggregates lies at the heart of understanding many disorders ranging from Alzheimer's disease to systemic lysozyme ... [more ▼]

The propensity of protein molecules to self-assemble into highly ordered, fibrillar aggregates lies at the heart of understanding many disorders ranging from Alzheimer's disease to systemic lysozyme amyloidosis. In this paper we use highly accurate kinetic measurements of amyloid fibril growth in combination with spectroscopic tools to quantify the effect of modifications in solution conditions and in the amino acid sequence of human lysozyme on its propensity to form amyloid fibrils under acidic conditions. We elucidate and quantify the correlation between the rate of amyloid growth and the population of nonnative states, and we show that changes in amyloidogenicity are almost entirely due to alterations in the stability of the native state, while other regions of the global free-energy surface remain largely unmodified. These results provide insight into the complex dynamics of a macromolecule on a multidimensional energy landscape and point the way for a better understanding of amyloid diseases. [less ▲]

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See detailBrain functional integration decreases during propofol-induced loss of consciousness.
Schrouff, Jessica ULg; Perlbarg, Vincent; Boly, Mélanie ULg et al

in NeuroImage (2011), 57(1), 198-205

Consciousness has been related to the amount of integrated information that the brain is able to generate. In this paper, we tested the hypothesis that the loss of consciousness caused by propofol ... [more ▼]

Consciousness has been related to the amount of integrated information that the brain is able to generate. In this paper, we tested the hypothesis that the loss of consciousness caused by propofol anesthesia is associated with a significant reduction in the capacity of the brain to integrate information. To assess the functional structure of the whole brain, functional integration and partial correlations were computed from fMRI data acquired from 18 healthy volunteers during resting wakefulness and propofol-induced deep sedation. Total integration was significantly reduced from wakefulness to deep sedation in the whole brain as well as within and between its constituent networks (or systems). Integration was systematically reduced within each system (i.e., brain or networks), as well as between networks. However, the ventral attentional network maintained interactions with most other networks during deep sedation. Partial correlations further suggested that functional connectivity was particularly affected between parietal areas and frontal or temporal regions during deep sedation. Our findings suggest that the breakdown in brain integration is the neural correlate of the loss of consciousness induced by propofol. They stress the important role played by parietal and frontal areas in the generation of consciousness. [less ▲]

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See detailWerner Herzog et Alexander Kluge: cinéastes documentaires
Hamers, Jérémy ULg

in Cahier Louis-Lumière (2011), 8

The documentaries of Werner Herzog and Alexander Kluge, especially in the space they leave for the spectator, demonstrate how much their approaches and conceptions of film are divergent and irreconcilable ... [more ▼]

The documentaries of Werner Herzog and Alexander Kluge, especially in the space they leave for the spectator, demonstrate how much their approaches and conceptions of film are divergent and irreconcilable. Nevertheless, the art of both these authors have something in common that has rarely been examined by analysts who have dedicated their work to both filmmakers. More than radical subjectivity (Herzog) or the aim of a visual reorganization of the subjective perception of the spectator (Kluge), a complex figure, and its perception by the spectator, are at the roots of their documentary practice. We call this figure the cinéaste. [less ▲]

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See detailCharacterization of the response of GFP microbial biosensors sensitive to substrate limitation in scale-down bioreactors
Delvigne, Frank ULg; Brognaux, Alison ULg; Gorret, Nathalie et al

in Biochemical Engineering Journal (2011), 55(2), 131-139

The dynamics of microbial stress response in intensive cultivation conditions remains not completely understood. In this work, two green fluorescent protein (GFP) transcriptional reporters have been used ... [more ▼]

The dynamics of microbial stress response in intensive cultivation conditions remains not completely understood. In this work, two green fluorescent protein (GFP) transcriptional reporters have been used as biosensors of the heterogeneities generated in a two-compartment scale-down reactor. The stress promoters have been chosen for their responsiveness to carbon limitation corresponding to the global substrate profiles encountered in intensive fed-batch cultures. From our results, it can be concluded that the exposure of microbial cells to substrates heterogeneities tends to decrease the GFP expression level in fed-batch mode. Fluorescence intensities have been monitored at the single cell level by using flow cytometry. During the course of the fed-batch culture, a drop at the level of the intracellular GFP content has been observed for the two scale-down operating conditions and for the two promoters sensitive to substrate limitation (rpoS and csiE). The fluorescence drop can be attributed to the repression of these promoters but also to the release of GFP to the extracellular medium according to the increase of the fluorescence level of the supernatant. This leakage has been observed for all the operating conditions, i.e. the scale-down reactors and the culture operating in the normal mode, i.e. in a well-mixed bioreactor. Interestingly, GFP leakage is more pronounced in the case of the cultures operated in the normal mode. Indeed, staining by propidium iodide tends to be more elevated for the microbial cells cultured under the normal mode by comparison with those cultured in scale-down conditions, indicating a higher permeability of the membrane. These results suggest that GFP microbial biosensors could be used to detect simultaneously mixing imperfections and their impact on the viability of microorganisms. [less ▲]

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See detailDETERMINATION OF TRIFLURALIN RESIDUES IN CULTURED CATFISH AND WATER.
Nguyen Quoc, Thinh; Tran Minh, Phu; Do Thi Thanh, Huong et al

Poster (2011)

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See detailEn guise de conclusion : chronologie, technologies et faciès culturels du Gravettien français
Noiret, Pierre ULg

in Pesesse, Damien; Goutas, Nejma; Klaric, Laurent (Eds.) et al À la recherche des identités gravettiennes : actualités, questionnements et perspectives (2011)

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See detailAngry faces hold the eyes
Belopolsky, Artem; Devue, Christel ULg; Theeuwes, Jan

in Visual Cognition (2011), 19

Efficient processing of complex social and biological stimuli associated with threat is crucial for survival. Previous studies have suggested that threatening stimuli such as angry faces not only capture ... [more ▼]

Efficient processing of complex social and biological stimuli associated with threat is crucial for survival. Previous studies have suggested that threatening stimuli such as angry faces not only capture visual attention, but also delay the disengagement of attention from their location. However, in the previous studies disengagement of attention was measured indirectly and was inferred on the basis of delayed manual responses. The present study employed a novel paradigm that allows to directly examine the delayed disengagement hypothesis by measuring the time it takes to disengage the eyes from threatening stimuli. The results showed that participants were indeed slower to make an eye movement away from an angry face presented at fixation than from either a neutral or a happy face. This finding provides converging support that the delay in disengagement of attention is an important component of processing threatening information. [less ▲]

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See detailLa famille transnationale dans tous ses états
Razy, Elodie ULg; Baby-Collin, Virginie

in Autrepart : Revue de Sciences Sociales au Sud (2011), 57-58

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See detailOrganochlorine pesticides, polychlorinated biphenyls and trace elements in wild European sea bass (Dicentrarchus labrax) off European estuaries
Schnitzler, Joseph ULg; Thomé, Jean-Pierre ULg; Lepage, Mario et al

in Science of the Total Environment (2011), 409(19), 3680-3686

Polychlorinated biphenyls (PCBs) and organochlorine pesticides like dichloro-diphenyl-trichloroethane (DDTs), hexachlorocyclohexanes (HCHs), aldrin, dieldrin and trace elements (Cd, Cu, Se, Pb, Zn and Hg ... [more ▼]

Polychlorinated biphenyls (PCBs) and organochlorine pesticides like dichloro-diphenyl-trichloroethane (DDTs), hexachlorocyclohexanes (HCHs), aldrin, dieldrin and trace elements (Cd, Cu, Se, Pb, Zn and Hg) were analysed in the muscle of European sea bass (Dicentrarchus labrax) sampled in Atlantic coastal regions near several important European river mouths (Gironde, Charente, Loire, Seine and Scheldt). High contamination levels were measured in the muscles of European sea bass sampled in the coastal regions near those river mouths (e.g. Σ ICES PCB=133–10,478 μg kg−1 lw and Hg=250–2000 μg kg−1 dw). The Scheldt and the Seine are still among the most contaminated estuaries in Europe. Each region presented their specific contamination patterns reflecting different sources due to the input of the respective rivers. As fish and fishery products are the main contributors of the total dietary intake of organochlorinated pollutants, regular consumption of European sea bass with the reported contamination levels may represent a significant exposure route for the general human population. [less ▲]

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