References of "Scientific congresses and symposiums"
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See detailThe spatial dimension of species diversity: where phytogeography, landscape ecology and conservation meet.
Bogaert, Jan ULg; Koffi, K J; Sibomana, S et al

in IUFRO Landscape Ecology Conference (2008)

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See detailThe tropical sea anemone Aiptasia pallida as a lab model for the study of coral bleaching
Ladrière, Ophélie ULg; Roberty, Stéphane ULg; Baudesson, Charlotte et al

Poster (2008)

Bleaching is still among major events threatening coral reefs. New tools have to be developped to better understand the mechanisms leading to this pathology : we studied the use of the hermatypic anemone ... [more ▼]

Bleaching is still among major events threatening coral reefs. New tools have to be developped to better understand the mechanisms leading to this pathology : we studied the use of the hermatypic anemone Aiptasia pallida as experimental model for coral bleaching. Aiptasia appears as a good candidate as it is easy to maintain in aquarium and subjected to bleaching like corals. Both morphological and physiological approaches were performed to investigate the ultrastructure of the anemone tissues (TEM) and the zooxanthellae photophysiology (chlorophyll a fluorescence, respiration and pigmentation). Experiments under light and dark stress reveal that anemone tissues ultrastructure can be differently affected. In darkness, the ectoderm activity is reoriented to capture prey by increasing cnidocyte density. In contrast, intense light affects especially the gastroderm : intercellular spaces increase, the expulsion of intact algae in the gastric cavity and the degradation of zooxanthellae inside vacuoles seem to reduce the zooxanthellae density, chloroplast thylakoids lose their parallel arrangement. The analysis of the fluorescence induction curve appears as a powerful tool to analyse the physiological events series previous to bleaching. Although no significant zooxanthellae density reduction was observed, the decrease of pigments concentrations indicates that light or dark stresses induce anemone bleaching. Under strong light intensity, A. pallida zooxanthellae show an increased proportion of PSII QB non reducing, leading to partial photoinhibition. This phenomenon favours the ROS production that damages cellular structures of host and zooxanthellae. In darkness, there is no photosynthesis; anemones have therefore to find other feeding sources, as suggested by the ultrastructural approach. As the present results confirm some of those obtained on scleractinians, A. pallida can be regarded as a good model for coral bleaching studies and has numerous advantages for experimentation. [less ▲]

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See detailNew Trends in Computing Anticipatory Systems : Emergence of Artificial Conscious Intelligence with Machine Learning Natural Language
Dubois, Daniel ULg

in Dubois, Daniel (Ed.) COMPUTING ANTICIPATORY SYSTEMS (2008)

This paper deals with the challenge to create an Artificial Intelligence System with an Artificial Consciousness. For that, an introduction to computing anticipatory systems is presented, with the ... [more ▼]

This paper deals with the challenge to create an Artificial Intelligence System with an Artificial Consciousness. For that, an introduction to computing anticipatory systems is presented, with the definitions of strong and weak anticipation. The quasi-anticipatory systems of Robert Rosen are linked to open-loop controllers. Then, some properties of the natural brain are presented in relation to the triune brain theory of Paul D. MacLean, and the mind time of Benjamin Libet, with his veto of the free will. The theory of the hyperincursive discrete anticipatory systems is recalled in view to introduce the concept of hyperincursive free will, which gives a similar veto mechanism: free will as unpredictable hyperincursive anticipation The concepts of endo-anticipation and exo-anticipation are then defined. Finally, some ideas about artificial conscious intelligence with natural language are presented, in relation to the Turing Machine, Formal Language, Intelligent Agents and Mutli-Agent System. [less ▲]

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See detailMetabolic Acidosis during Intracranial Surgery under Propofol or Sevoflurane Anesthesia
Schaub, Isabelle; Bonhomme, Vincent; Demoitie, Jeannick et al

in Anesthesiology (2008), 109(A475), 475

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See detailApplication of the direct strength method to stainless steel lipped channel section columns failing by combined distortional and flexural-torsional buckling
Rossi, Barbara ULg; Rondal, Jacques ULg; Rasmussen, Kim J.R.

in European conference on steel and composite structures : Eurosteel2008, Gratz 3-5 September 2008 (2008)

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See detailPathological and clinical features of a large brazilian family harboring a frameshift mutation in the aryl hydrocarbon receptor interacting protein gene
Naves, L. A.; Azevedo, M. F.; Casulari, L. A. et al

in XIV Simposo Internacinal de Neuroendocrinologia - Endocrinologia and Metabologia - Arquivos Brasileiros de Endocrinologia e Metabologia : Fevereiro 2008, 52, suplemento 1 (2008)

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See detailDaughters Taking Over the Family Business : A Gender Analysis
Constantinidis, Christina ULg; Cornet, Annie ULg

in Dunsby, Brian L. (Ed.) 31st Institute for Small Business and Entrepreneurship Conference : International Entrepreneurship - Promoting Excellence in Education, Research and Practice, Conference CD, 5th-7th November 2008, Belfast, N. Ireland (2008)

This paper investigates the succession process as perceived and lived by daughters taking over the family business, with a gender perspective. Despite the rich literature on the succession process in ... [more ▼]

This paper investigates the succession process as perceived and lived by daughters taking over the family business, with a gender perspective. Despite the rich literature on the succession process in family firms, few studies use a gender approach, though an increasing number of ventures are launched, taken over and managed by women, largely contributing to the economic development. In line with Dumas (1998), Barbot et al. (2005) and Vera & Dean (2005), our research aims at analyzing the succession process when daughters take over the family business. Our contribution is a gender analysis of the process, including the social phenomena of separation and hierarchy, with a focus on family composition. Using the model of Cadieux et al. (2000), we identify at each stage of the succession process, the key actors of the environment, we analyze their interactions and see how they open opportunities or rise difficulties in terms of legitimacy for daughters. The qualitative thematic analysis of eleven detailed case studies reveals a strong influence of the presence or absence of a son on the motivations and positioning of daughters, as well as on the construction of their legitimacy towards family and stakeholders. This study leads to several implications for public and private initiatives. [less ▲]

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See detailEffect of the content of partially hydrogenated oils on the physical and structural properties of bakery margarines
Cavillot, V; Danthine, Sabine ULg; Kervyn de meerendré, M. et al

Poster (2008)

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See detailTransfer in interlanguage phonology: the case of prosody
Rasier, Laurent ULg

Conference (2008)

Detailed reference viewed: 49 (0 ULg)
See detailPrise de décision et gestion des risques
Nyssen, Anne-Sophie ULg

Conference (2008)

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See detailConstitutional Framework of the Different Types of Income
Bourgeois, Marc ULg

in Peeters, B. (Ed.) The Concept of Tax (2008)

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See detailLe service public et le droit communautaire
Durviaux, Ann-Lawrence ULg

Conference (2008)

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See detailLes produits animaux dans l’assiette des Wallons
Duquesne, Brigitte ULg

in Treizième Carrefour des Productions Animales "L'élevage des ruminants en question : vérités et contre-vérités" (2008)

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See detailA Chemical Platform for the Design of Versatile AFM Probes
Willet, Nicolas ULg; Duwez, Anne-Sophie ULg

in Hinterdorfer, Peter; Schütz, Gerhard; Pohl, Peter (Eds.) Proceedings of the IX. Linz Winter Workshop 2007 (2008)

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See detailEffect of aggressive interactions on aromatase activity in discrete brain regions in wild male white-crowned sparrows
Charlier, Thierry ULg; Newman, Amy EM; Soma, Kiran K

Poster (2008)

Testosterone (T) is a critical endocrine factor involved in the activation of aggressive behaviors. In many vertebrate species, circulating T levels rapidly increase after aggressive encounters during the ... [more ▼]

Testosterone (T) is a critical endocrine factor involved in the activation of aggressive behaviors. In many vertebrate species, circulating T levels rapidly increase after aggressive encounters during the breeding season. In contrast, we recently showed that circulating T concentrations did not change in white-crowned sparrows in the late breeding season after simulated territorial intrusions. We suggested that changes in local metabolism of T might be more important than changes in systemic T levels. Neural aromatization of T into 17􀀁-estradiol (E2) often mediates the physiological and behavioral actions of T. In vertebrates, aromatase is expressed in several discrete brain regions. We hypothesized that in the late breeding season, brain aromatase is rapidly modulated after aggressive interaction, leading to changes in local concentrations of E2. Wild male white-crowned sparrows were exposed to simulated territorial intrusion with song playback and decoy (STI) or control (CON) for 30 min. STI significantly increased aggressive behaviors. Birds were then caught, rapidly bled and sacrificed. Brains were collected and rapidly frozen on dry ice. We used 0.9 mm diameter punches from 300 μm coronal sections to isolate 13 different brain nuclei. Aromatase activity was analyzed in punches from the left side of the brain, while E2 was analyzed in punches from the right side of the brain. Aromatase activity was quantified by measuring the release of tritiated water during aromatization of [1􀀁-3H]-androstenedione. As expected, aromatase activity was high in the medial preoptic area, ventromedial nucleus of the hypothalamus, hippocampus, bed nucleus of the stria terminalis, nucleus taeniae of the amygdala, and caudomedial nidopallium. Aromatase activity was low in the medial magnocellular nucleus of anterior nidopallium, HVC, Area X, nucleus robustus of the arcopallium, optic lobes, periaqueductal gray and cerebellum. Aromatase activity was not different between the STI and CON groups in any region. There were no significant correlations between aromatase activity and aggressive behaviors or endocrine measures (plasma T, progesterone, corticosterone and corticosteroid binding globulin). These data provide no evidence for rapid modulation of brain aromatase activity following aggressive interactions. It is however possible that aromatase activity is more rapidly modulated (e.g. within 5 min) and these changes were not observed in our 30 min paradigm. We are currently investigating whether local E2 is affected by aggressive interactions. [less ▲]

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See detailDescription of cropland CO2 exchange : a comparison of empirical and physiologically based estimates of Reco, GPP and NEE
Tenhunen, J.; Li, Y.-L.; Dinh, N. Q. et al

in CarboEurope-IP meeting 2008 (2008)

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See detailDietary supplementation with an omega-3 polyunsaturated fatty acids and luteolin combination in cats
Leemans, Jérôme ULg; Cambier, Carole ULg; Chandler, T. et al

in Proceedings: 26th Annual Symposium of the Veterinary and Comparative Respiratory Society (2008)

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See detailTests and design of stainless steel lipped channel section columns
Rossi, Barbara ULg; Rondal, Jacques ULg; Cescotto, Serge ULg et al

in European conference on steel and composite structures : Eurosteel2008, Gratz 3-5 September 2008 (2008)

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See detailCarbon and Nitrogen Isotopic Ratios in Comets
Jehin, Emmanuel ULg; Manfroid, Jean ULg; Hutsemekers, Damien ULg et al

in LPI contribution 1405 (2008)

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See detailComparison of T1 and T2 - weighted and Blade MRI sequences for examination of canine normal abdomen
Hoffmann; Buttin; Haye et al

Poster (2008)

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See detailHow to do percutaneous ultrasound-guided liver biopsy in the adult horse
Busoni, Valeria ULg

in XIV SIVE / FEEVA Congress Proceedings (2008)

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See detailOperational monitoring of multi-qubit entanglement classes via tuning of local operations
Bastin, Thierry ULg; Thiel, C.; von Zanthier, J. et al

Conference (2008)

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See detailDoes the self-face grab and/or retain attention? An eye movement study
Devue, Christel ULg; Van der Stigchel, Stefan; Brédart, Serge ULg et al

in Perception (2008), 37(Suppl. S), 94

Previous studies that investigated the ability of high priority stimuli to grab attention reported contradictory results. In the present study, eye tracking was used to examine the effect of the presence ... [more ▼]

Previous studies that investigated the ability of high priority stimuli to grab attention reported contradictory results. In the present study, eye tracking was used to examine the effect of the presence of the self-face among unfamiliar faces in a visual search task in which face identity was task-irrelevant. We evaluated whether the self-face (i) received prioritized selection, (ii) retained attention, and (iii) whether its status as target or distractor had a differential effect. Another highly familiar face was included to control whether possible effects were specific to the self-face or could be explained by high familiarity. We found that the presence of the self-face affected performance on the search task. This was not due to a prioritized processing but rather to a difficulty to disengage attention. Crucially, this effect seemed due to self-face familiarity. Indeed, similar results were obtained with the other familiar face. Moreover, the effect of the self-face was stronger when it was presented as the target than when it was a distractor. [less ▲]

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See detailIs there anything to expect from 3D views in sketching support tools ?
Darses, Françoise; Mayeur, Anaïs; Elsen, Catherine ULg et al

in Gero, John S.; Goel, Ashok K. (Eds.) Design Computing and Cognition '08 : Proceedings of the Third International Conference on Design Computing and Cognition. (2008)

This paper describes a research project which aims at studying the ergonomic and cognitive value of EsQUIsE, a freehand design environment for architects. This sketch-based modeling software is ... [more ▼]

This paper describes a research project which aims at studying the ergonomic and cognitive value of EsQUIsE, a freehand design environment for architects. This sketch-based modeling software is implemented on a Tablet PC. The EsQUIsE software provides architects with the possibility to generate automatically 3D views from the freehand drawings. The first part of the paper deals with the usability of such a digital environment for sketching, and especially the use of the drawing areas. The second part of the paper is dedicated to the analysis of how 3D views are generated and used for exploring alternative solutions. Although in interviews architects rate 3D highly, in fact they do not produce a large volume of 3D sketches. Issues about visual and spatial reasoning in design are thus highlighted. Finally, the benefit of such a tool for creativity is questioned. [less ▲]

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See detailPotential implication of host/symbiont recognition mechanisms in coral bleaching
Vidal-Dupiol, Jérémie; Mitta, Guillaume; Roger, Emmanuel et al

Poster (2008)

Bleaching in corals can be attributed to loss of endosymbiotic zooxanthellae and/or loss of photosynthetic pigments within zooxanthellae. This major disturbance of the reef ecosystem is principally ... [more ▼]

Bleaching in corals can be attributed to loss of endosymbiotic zooxanthellae and/or loss of photosynthetic pigments within zooxanthellae. This major disturbance of the reef ecosystem is principally induced by increases in water temperature. Since the beginning of the 80ís and the onset of global climate change, this phenomenon has been occurring at increasing rates and scales, and with increasing severity. In this study, we focused on finding early regulated genes involved in bleaching. In aquaria, one set of Pocillopora damicornis nubbins was subjected to a gradual seawater temperature increase from 28°C to 32°C over 15 days, and a second control set remained at constant temperature (28°C). Bleaching was monitored by measuring zooxanthellae density. The mRNA differentially expressed between the stressed state (sampled just before the onset of bleaching) and the non stressed state (control) were isolated from the nubbins by Suppression Subtractive Hybridization. The corresponding cDNA were sequenced and confronted to sequence databases to obtain gene similarities. Finally, transcription rates of the most interesting genes were conducted by Q-PCR. Two particularly interesting candidate genes showed an important decrease in their transcription rates following thermal stress and before zooxanthellae loss. These two genes show similarities with genes involved in host/symbiont and host/parasite models. The implication of these molecular actors suggests a possible role of recognition mechanisms between the host and its symbiont, in the breakdown of the symbiosis during the bleaching phenomenon. Experiments such as RACE-PCR, in situ hybridization and immunohistochemistry are currently underway to confirm our hypotheses. [less ▲]

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See detailEffect of the sowing date on physicochemical and fonctional properties of native starches extracted from European soft wheat (Triticum aestivum L.)
Massaux, Carine; Sindic, Marianne ULg; Paridaens, A.-M. et al

in Weegels, P. L.; Courtin, C. M.; Arrachid, A. (Eds.) et al Consummer driven cereal innovation: where science meets industry (2008)

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See detailEvaluation du potentiel antioxydant et de la propriété antiproliférative de l’huile essentielle d’armoise blanche du Maroc oriental
Imelouane, B.; Amjamdi, H.; Dubois, J. et al

Poster (2008)

La présente communication est consacrée à l’étude du pouvoir antioxydant de l’huile essentielle de l’armoise blanche. Les résultats obtenus montrent qu’effectivement l’huile essentielle de l’armoise et ... [more ▼]

La présente communication est consacrée à l’étude du pouvoir antioxydant de l’huile essentielle de l’armoise blanche. Les résultats obtenus montrent qu’effectivement l’huile essentielle de l’armoise et riche en antioxydant et inhibe le développement de quelques lignées cellulaires. [less ▲]

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See detailFunctional properties of phospholipids and proteins from rapeseed as native tensioactives
Vaca Medina, Guadalupe; Mouloungui, Zéphirin; Deleu, Magali ULg et al

Poster (2008)

Detailed reference viewed: 54 (2 ULg)
See detailCuivre et biodiversité au Katanga : stratégies de conservation et de valorisation d’un patrimoine exceptionnel.
Meerts, P; Shimba, N; Shutcha, M N et al

in Colloque « La quête des ressources naturelles en Afrique centrale. Le cas du secteur minier en RDC. (2008)

Detailed reference viewed: 28 (6 ULg)
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See detailEvaluation of silicon stocks and uptake in five forest stands on an acid brown soil
Cornelis, Jean-Thomas ULg; Ranger, Jacques; Iserentant, Anne et al

Conference (2008)

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See detailDating an early medieval church by the luminescence method: the case of St Martin at Angers (France)
Blain, Sophie ULg; Prigent, Daniel; Guibert, Pierre et al

Poster (2008)

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See detailOn boundary condition in tunnels under partial saturation
Gerard, Pierre ULg; Charlier, Robert ULg; Collin, Frédéric ULg

in Toll, David (Ed.) Unsaturated Soils: Advances in Geo-Engineering (2008)

A new hydraulic boundary condition modelling the hydraulic transfers between porous medium and ambient atmosphere occurring during gallery excavations is described. It combines two modes of water ... [more ▼]

A new hydraulic boundary condition modelling the hydraulic transfers between porous medium and ambient atmosphere occurring during gallery excavations is described. It combines two modes of water exchanges in partial saturation: seepage and evaporation flows. Numerical simulations of a gallery excavation in dilatant geomaterial are carried out in isothermal conditions. The results show the influence of hydric boundary condition on the convergence of the gallery and the importance of the determination of vapour transfer coeffi-cient between atmosphere and porous medium. [less ▲]

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See detailA systematic procedure to predict flows induced by major dysfunctions on complexes or cascades of dams
Dewals, Benjamin ULg; Archambeau, Pierre ULg; Erpicum, Sébastien ULg et al

in Proceedings of the 3rd IAHR-International Symposium on Hydraulic Structures (2008)

Hazard analysis of dams arranged in complex or in cascade may involve the assessment of a large number of different scenarios of combined failures. However, a tremendous computation time would be needed ... [more ▼]

Hazard analysis of dams arranged in complex or in cascade may involve the assessment of a large number of different scenarios of combined failures. However, a tremendous computation time would be needed to perform a detailed modeling of the flows generated by all possible scenarios. Therefore, the present paper describes a rational methodology for analyzing the flows induced by the most relevant incidents occurring on a complex or in a cascade of dams and reservoirs. The methodology combines several hydrodynamic models, including the twodimensional flow solver WOLF 2D and a simplified lumped hydrodynamic model, to simulate (i) the flows induced on the dams complex, (ii) the potential breaching in cascade of other dams, as well as (iii) the propagation of the flood wave in the whole downstream valley. The application of the methodology to a practical case study involving a complex of five dams is also described. [less ▲]

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See detailSecondary Consequences of the Distinction between Taxes an the other Modes of Financing Government Expenditure
Bourgeois, Marc ULg

in Peeters, B. (Ed.) The Concept of Tax (2008)

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See detailAn explicit projection method for solving incompressible Navier-Stokes equations
Detrembleur, Sylvain ULg; Archambeau, Pierre ULg; Erpicum, Sébastien ULg et al

in Proceedings of the 2nd International Junior Researcher and Engineer Workshop on Hydraulic Structures (2008)

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See detailOptical Observations of Comet McNaught from La Silla
Snodgrass, C.; Fitzsimmons, A.; Jehin, Emmanuel ULg et al

in LPI contribution 1405 (2008)

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See detailThe sketch power to support product design.
Elsen, Catherine ULg; Leclercq, Pierre ULg

in Marjanovic, D.; Storga, M.; Pavkovic, N. (Eds.) et al Proceedings of the Design 2008 : 10th International Design Conference, Vol 2 (2008)

This paper is interested in the extent to which sketches and 3D representations are important in today's design process, particularly during the preliminary creative phases of product design. We question ... [more ▼]

This paper is interested in the extent to which sketches and 3D representations are important in today's design process, particularly during the preliminary creative phases of product design. We question the relevance of sketches within systems of external representations and amongst the infinite possibilities offered by CAD tools. This exploratory research is conducted through 3 steps: an information gathering step where we assess the current state of art, a direct contact with designers through interviews and the testing of the existing theories through pragmatic experimentation. The project’s goal is to objectivize a Human Machine Interaction that could effectively and efficiently support the product designers in their creative phases. [less ▲]

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See detailAdaptive remeshing for incremental forming simulation
Lequesne, Cédric ULg; Henrard, Christophe ULg; Bouffioux, Chantal ULg et al

in Pavel, H. (Ed.) Proceedings of the 7th International Conference and Workshop on Numerical Simulation od 3D Sheet Metal Forming Processes (NUMISHEET 2008) (2008)

Incremental forming of aluminium sheets has been modelled by finite element simulations. However the computation time was prohibitive because the tool deforms every part of the sheet and the mesh along ... [more ▼]

Incremental forming of aluminium sheets has been modelled by finite element simulations. However the computation time was prohibitive because the tool deforms every part of the sheet and the mesh along the tool path must be very fine. Therefore, an adaptive remeshing method has been developed. The elements that are close to the tool are divided into smaller elements in order to have a fine mesh where high deformations occur. Consequently, some new nodes become inconsistent with the non-refined neighbouring elements. To overcome that problem, their displacements are constrained, i.e. dependent on their master nodes displacements. The data concerning these new nodes and elements are stored in a linked list, which is a fundamental data structure. It consists of a sequence of cells, each containing data fields and a pointer towards the next cell. The goal of this article is to explain the developments performed in the finite element code, to validate the adaptive remeshing technique and to measure its efficiency using the line test simulation. During this test, which is a simple incremental forming test, a clamped sheet is deformed by a spherical tool moving along a linear path. [less ▲]

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See detailHydrogeological study of Somes-Szamos transboundary alluvial aquifer
Dassargues, Alain ULg; Drobot, Radu; Lenart, Laszlo et al

in Technical/Scientific Issues of Transboudary Water Management: Experience from around the world (2008)

Detailed reference viewed: 48 (17 ULg)
See detailTotal Electron Content monitoring using triple frequency GNSS data: a three-step approach
Spits, Sandrine; Warnant, René ULg

Conference (2008)

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See detailOperational Modal Analysis using Second-Order Blind Identification
Poncelet, Fabien ULg; Kerschen, Gaëtan ULg; Golinval, Jean-Claude ULg

in 26th International Modal Analysis Conference, Orlando, 2008 (2008)

For modal analysis of large structures, it is unpractical and expensive to use artificial excitation (e.g., shakers). However, engineering structures are most often subject to ambient loads (e.g., traffic ... [more ▼]

For modal analysis of large structures, it is unpractical and expensive to use artificial excitation (e.g., shakers). However, engineering structures are most often subject to ambient loads (e.g., traffic and wind) that can be exploited for modal parameter estimation. One difficulty is that the actual loading conditions cannot generally be measured, and output-only measurements are available. This paper proposes to explore the utility of blind source separation (BSS) techniques for operational modal analysis. The basic idea of BSS is to recover unobserved source signals from their observed mixtures. The feasibility and practicality of the proposed method are demonstrated using an experimental application. [less ▲]

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See detailThe TNF receptor signalling network: Modular modelling and cell-type specific analysis
Waldherr, S; Doszczak, M; Schliemann, Monica ULg et al

Poster (2008)

Detailed reference viewed: 17 (0 ULg)
See detailQuantum imaging with trapped ions
von Zanthier, J.; Thiel, C.; Bastin, Thierry ULg et al

Conference (2008)

Detailed reference viewed: 3 (0 ULg)
See detailTotal Electron Content monitoring using triple frequency GNSS data: a three-step approach
Spits, Justine; Warnant, René ULg

Conference (2008)

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See detailDioxin-like compounds in porpoises and seals from the southern North Sea: relationship with biological and ecological factors
Das, Krishna ULg; De Pauw, Edwin ULg; Eppe, Gauthier ULg et al

in Organohalogen Compounds (2008), 70

The North Sea represents a major ecosystem for the harbour porpoise (Phocoena phocoena) and the harbour seal (Phoca vitulina). The grey seal (Halichoerus grypus) occurs more occasionally in the southern ... [more ▼]

The North Sea represents a major ecosystem for the harbour porpoise (Phocoena phocoena) and the harbour seal (Phoca vitulina). The grey seal (Halichoerus grypus) occurs more occasionally in the southern part of the North Sea. Their population over this last decade has experienced major fluctuations likely linked to prey availability and seal epizootics. Despite being banned more than 30 years ago, levels of polychlorinated biphenyls (PCBs) in marine mammals are still of concern due to historical contamination of the North Sea. [less ▲]

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See detailA mechanobioregulatory model for the study of bone fracture healing
Geris, Liesbet ULg; Gerisch, A.; Weiner, R. et al

in Proceedings of the European Conference on Mathematical and Theoretical Biology (2008)

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See detailAn experimental analysis of effects induced by moving bodies in shallow water
Kerger, François ULg; Detrembleur, Sylvain ULg; Archambeau, Pierre ULg et al

in Proc. 2nd International Junior Researcher and Engineer Workshop on Hydraulic Structures (2008)

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See detailQuasar Host Orientation and Polarization: Insights into the Type 1/Type 2 Dichotomy
Borguet, Benoît ULg; Hutsemekers, Damien ULg; Letawe, Géraldine ULg et al

in Revista Mexicana de Astronomía y Astrofísica (2008), 32

We investigate correlations between the optical linear polarization position angle and the orientation of the host galaxy/extended emission of Type 1 and Type 2 Radio-Loud (RL) and Radio-Quiet (RQ ... [more ▼]

We investigate correlations between the optical linear polarization position angle and the orientation of the host galaxy/extended emission of Type 1 and Type 2 Radio-Loud (RL) and Radio-Quiet (RQ) quasars. We have used high resolution Hubble Space Telescope (HST) data and deconvolution process to obtain a good determination of the host galaxy orientation. With these new measurements and a compilation of data from the literature, we find a significant correlation between the polarization position angle and the position angle of the major axis of the host galaxy/extended emission. The correlation appears different for Type 1 and Type 2 objects and depends on the redshift of the source. Interpretations in the framework of the unification model are discussed. [less ▲]

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See detailEuropean market trend for fishery and European regulations for imported fishery
Duquesne, Brigitte ULg

in Development orientations of shrimp production chain in Bac Lieu Province, July 1-2, 2008 : actes du colloque (2008)

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See detailSelf-Adapting Parameters in Simulation of Management Systems
Dubois, Daniel ULg; Holmberg, Stig

in Trappl, Robert (Ed.) CYBERNETICS AND SYSTEMS 2008 (2008)

This paper deals with a new version of a web-based software simulation tool MLD-STAR (Management Learning and Decision making – Simulation Tool with Anticipation and Retardation), for the numerical ... [more ▼]

This paper deals with a new version of a web-based software simulation tool MLD-STAR (Management Learning and Decision making – Simulation Tool with Anticipation and Retardation), for the numerical simulation of mathematical models of management systems. A new algorithm is presented to automatically compute the numerical values of the parameters of models to be simulated. The main idea consists in generating successive sets of values of the parameters of the model with a random number generator, and to use a selection criterion for accepting or rejecting the sets of values. This self-adapting parameters method is so based on a Darwinian process of selection. Results of simulations with such self-adapting parameters are given in using the mathematical model given in Dubois and Holmberg (2006). [less ▲]

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See detailRange-dependence compensation in airborne bistatic STAP radar for partially-calibrated conformal antenna arrays
Ries, Philippe; Lapierre, Fabian D.; Lesturgie, Marc et al

Conference (2008)

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See detailPerturbation Finite Element Method for Refining Magnetic Circuit Models
Dular, Patrick ULg; V Sabariego, Ruth ULg; Ferreira da Luz, Mauricio Valencia et al

in Proceedings of the XX Symposium Electromagnetic Phenomena in Nonlinear Circuits (EPNC2008) (2008)

Model refinements of magnetic circuits are performed via a subproblem finite element method based on a perturbation technique. An approximate problem considering ideal flux tubes is first solved. It gives ... [more ▼]

Model refinements of magnetic circuits are performed via a subproblem finite element method based on a perturbation technique. An approximate problem considering ideal flux tubes is first solved. It gives the sources for finite element perturbation problems considering all the details of the exterior regions, thus accounting for leakage fluxes. The procedure simplifies both meshing and solving processes. It quantifies the gain given by each model refinement on both local and global quantities. [less ▲]

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See detailFollow-up of Coll2-1, Coll2-1 NO2 and myeloperoxidase in dog after transection of the cruciate ligament of the knee
Henrotin, Yves ULg; Pelletier, JP; Martel-Pelletier, J et al

in Arthritis and Rheumatism (2008), 58(Suppl 9), 652

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See detailQuantum imaging with uncorrelated single photon sources
Bastin, Thierry ULg; Thiel, C.; Solano, E. et al

Conference (2008)

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See detailLe commerce équitable entre le Vietnam et l’Union européenne : enjeux et perspectives
Duquesne, Brigitte ULg

in Les cahiers de l'Association Tiers-Monde (2008), 23

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See detailThe nucleolus in reptiles: Ultrastructural studies
Lamaye, F; Thiry, Marc ULg

Poster (2008)

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See detailModélisation numérique et gestion du risque inondation en milieu urbain sur base de modèles topographiques à haute résolution
Detrembleur, Sylvain ULg; Dewals, Benjamin ULg; Archambeau, Pierre ULg et al

in 3e journées doctorales en hydrologie urbaine (2008)

Dans le cadre général des grands événements récurrents d'inondation enregistrés à travers le monde et en Europe en particulier, des cartes d'inondation représenteraient un outil de grand intérêt pour les ... [more ▼]

Dans le cadre général des grands événements récurrents d'inondation enregistrés à travers le monde et en Europe en particulier, des cartes d'inondation représenteraient un outil de grand intérêt pour les décideurs en matière d’aménagement du territoire mais aussi pour les compagnies d'assurance afin d’évaluer les risques liés à l'inondation ou encore pour permettre une gestion de crise efficace sur le terrain. Dans ce but, des cartes complètes et précises sont nécessaires pour différents événements de probabilités données. En Belgique, début 2003, suivant une décision du gouvernement wallon, le modèle d’écoulements à surface libre WOLF2D a été officiellement choisi pour calculer des cartes d'inondation sur 800 kilomètres de cours d’eau en région wallonne en utilisant un modèle numérique de terrain à très haute résolution. Les résultats de ces calculs ont, par la suite, été utilisés par l'administration wallonne afin de concevoir la carte d’aléa inondation sur l’ensemble du territoire. Le modèle hydraulique employé est intégré dans la suite logicielle WOLF, qui est développée depuis plus de dix ans à l'Université de Liège. Basée sur la formulation classique des équations en eaux peu profondes, sa discrétisation en volumes finis permet de traiter tout écoulement composé de mailles sèches et mouillées tout en assurant exactement la conservation du volume. Le caractère multiblocs du logiciel permet de modéliser des raffinements locaux du maillage au niveau des centres urbains tout en conservant, si nécessaire, des maillages plus lâches dans les grandes plaines inondables. Par ailleurs, des procédés de raffinement automatique du maillage permettent d’accélérer fortement les temps de calcul. Un modèle moyenné de turbulence type k-ε peut également être employé et renforce ainsi les potentialités du modèle face aux écoulements complexes. Une interface permet en outre de gérer l’ensemble des procédures de pré et post processing nécessaires à la conception des modélisations et à l’interprétation des résultats. Les opérations d'importation et d'exportation sont facilement réalisables vers la plupart des outils SIG classiques. Différentes couches de cartes peuvent être manipulées pour analyser les informations relatives à la topographie, à l’occupation du sol, à la densité de la végétation ou encore aux champs hydrodynamiques. Grâce à l'utilisation de modèles topographiques de haute résolution (1 point par mètre carré) disponible sur le lit principal comme sur les plaines d'inondation des cours d’eau étudiés, des modélisations basées sur des maillages composés de cellules carrées de 2m x 2m ont été réalisées notamment au droit des centres urbains traversés par les rivières. Le modèle hydraulique a été intensivement validé par des comparaisons avec des observations lors d’événements récents. L'incertitude globale du modèle s'est avérée inférieure à 10 centimètres en termes de surface libre et permet de décrire l’inondation rue par rue et maison par maison. [less ▲]

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See detailLe droit scolaire
Maréchal, Benoît ULg

Conference (2008)

Seminar on the rights and duties at school and the admninistrative proceedings in case of litigation.

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See detailAssessing the Impact of Weather on Traffic Intensity
Cools, Mario ULg; Moons, Elke; Wets, Geert

in Proceedings of the 87th Annual Meeting of the Transportation Research Board (DVD-ROM) (2008)

The investigation of weather effects on traffic intensity is important from a road safety point of view, because traffic intensity is noted as the first and primary determinant of traffic safety. Next to ... [more ▼]

The investigation of weather effects on traffic intensity is important from a road safety point of view, because traffic intensity is noted as the first and primary determinant of traffic safety. Next to traffic safety, weather conditions affect other predominant traffic variables, namely traffic demand and traffic flow. Therefore the main objective of this study is the identification and comparison of weather effects on traffic intensity at different site locations. To assess the impact of weather conditions on traffic intensity, the upstream and downstream traffic of four traffic count locations are considered. The traffic intensity data originate from minute data coming from single inductive loop detectors, collected by the Flemish Traffic Control Center. Data concerning weather events were recorded by the Royal Meteorological Institute of Belgium. The main modeling philosophy envisaged in this study to identify and quantify weather effects is the linear regression approach. Most appealing result of this study for policy makers, is the heterogeneity of the weather effects between different traffic count locations, and the homogeneity of the weather effects on upstream and downstream traffic at a certain location. The results also indicated that snowfall, rainfall and wind speed have a clear diminishing effect on traffic intensity, while maximum temperature significantly increases traffic intensity. Further generalizations of the findings are possible by studying weather effects on local roads and by shifting the scope towards travel behavior. Simultaneously modeling of weather conditions, traffic intensity rates, collision risk and activity travel behavior is certainly a key challenge for further research. [less ▲]

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See detailPregnancy diagnosis in ruminant species.
Melo de Sousa, Noelita ULg; Szenci, O.; Taverne, M. A. M. et al

in Reproduction in Domestic Animals (2008), 43(Suppl 5), 104

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See detailModel-based detection of pulmonary embolism using an extended physiologically relevant, cardiovascular model
Kok, K.; Starfinger, C.; Hann, C. E. et al

in Proceedings of Engineering & Physical Sciences in Medicine and Australian Biomedical Engineering Conference (EPSM ABEC 2008) (2008)

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See detailOn the complementarity of contrastive linguistics and interlanguage studies
Rasier, Laurent ULg; Hiligsmann, Philippe

Conference (2008)

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See detailTemps de travail et horaires atypiques : Impact sur le conflit travail-famille et le bien-être.
Hansez, Isabelle ULg; Etienne, Anne-Marie ULg; Breuer, Lara

in Balikdjiian, A.; Salengros, P.; Lemoine, C. (Eds.) et al Analyse du travail, technologie et psychologie de la consommation. Actes du 14ème congrès de Psychologie du Travail et des Organisations de Langue Française. (2008)

L’étude présentée propose d’examiner, parmi 184 travailleurs luxembourgeois, le lien entre le temps de travail, y compris les horaires atypiques, l’interaction vie privée-vie professionnelle et le bien ... [more ▼]

L’étude présentée propose d’examiner, parmi 184 travailleurs luxembourgeois, le lien entre le temps de travail, y compris les horaires atypiques, l’interaction vie privée-vie professionnelle et le bien-être au travail. Les résultats principaux relèvent un effet significatif (négatif) du travail de week-end, du travail de nuit et des horaires compressés sur l’influence négative travail-famille. Un effet significatif (négatif) de l’horaire compressé sur l’influence positive travail-famille est aussi mis en évidence. Enfin, le temps partiel serait lié à un niveau de stress plus faible et une influence négative du travail sur la famille plus faible. Cette dernière jouerait par ailleurs un rôle de modérateur partiel entre le temps de travail et le stress négatif. [less ▲]

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See detailThe problem of the consumer may be the solution. Sustainable production from the consumers perspective: the emergence of the "Gaume grassland steer" in Belgium
Stassart, Pierre M ULg

in Stassart, Pierre M (Ed.) Proceedings of the "Sustainable Consumption Alternative Agrifood Systems (2008)

This paper examines the question of sustainable consumption through the consumer’s contribution to the various dimensions of sustainability. The consumer’s participation reveals legitimacy conflicts in ... [more ▼]

This paper examines the question of sustainable consumption through the consumer’s contribution to the various dimensions of sustainability. The consumer’s participation reveals legitimacy conflicts in the process of designing new production systems. The different dimensions of sustainability can be linked to different legitimacy models. When the building of new systems entails a concerted process involving dialogue and deliberation among stakeholders from the agricultural and environmental sectors, various legitimacy principles are mobilized and confront each other through the spokespeople who represent the interests involved. This specific case concerns beef produced from the ”Gaume grassland steer,” a system that can be characterized as agroecological and territorial. The consumers who were involved contributed, through deliberative processes, to the coexistence of various legitimacy principles and stakeholder cooperation. This capacity could be linked to their multiple and fuzzy identities because their identities were shown to be flexible, changing with the institutional setting, which was sometimes consumer-oriented and sometimes territory-driven. This allowed them to act as mediators between environmentalists and farmers. To do this they had to be able to accept the limits of each legitimacy principle and contest the possibility of imposing only one principle on all the others. In so doing they helped the heterogeneous actors to reach compromises by referring to a kind of patrimonial common good. [less ▲]

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See detailNumerical modelling and theoretical analysis of geometrically-controlled flow instabilities in rectangular basins
Dewals, Benjamin ULg; Erpicum, Sébastien ULg; Pirotton, Michel ULg

in Proceedings of the 4th International Conference on Advanced Computational Methods in Engineering (2008)

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See detailReliable Design of Physical and Reactive Extraction Based on Simple Lab-Scale Experiments
Pfennig, Andreas ULg

in Solvent Extraction: Fundamentals to Industrial Applications. Proceedings of the ISEC 2008 International Solvent Extraction Conference : Tucson 16-19 septembre 2008 (2008)

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See detailTransabdominal ultrasonography and the diagnosis of peritoneal and digestive tract disease in the horse
Busoni, Valeria ULg

in XIV SIVE / FEEVA Congress Proceedings (2008)

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See detailApparent Coexistence of Multiple Regimes of Self-Excited Vibrations in Deep Drilling Systems
Depouhon, Alexandre ULg; Detournay, Emmanuel

in Proceedings of ICTAM 2008, Adelaide (2008)

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See detailGenetic Causes of Pituitary Adenmas; Focus on the Roe of AIF Status in Multiple Tumor Types
Ansaneli Naves, L.; Ferreira Azevedo, M.; Faria de Castro, L. et al

in ENDO 2008: 90th Annual Meeting of the Endocrine Society - Abstract book (2008)

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See detailLes dédicaces latines des motets et "Sacrae Cantiones" de René del Mel
Corswarem, Emilie ULg

in Bossuyt, Ignace; Gabriëls, Nele; Sacré, Dirk (Eds.) et al Cui dono lepidum novum libellum ? Dedicating Latin Works and Motets in the Sixteenth Century Theory and Practice (2008)

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See detailRocking behaviour of prefabricated concrete frames subjected to earthquake action
Degée, Hervé ULg; Denoël, Vincent ULg

in Proceedings of ACOMEN 2008, Advanced Computational Methods in Engineering (2008)

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See detailAryl Hydrocarbon Receptor interacting Protein Gene Mutations in Bulgarian FIPA and Young Sporadic Pituitary Adenoma Patients
Yaneva, M.; Daly, Adrian ULg; Tichomirowa, M. A. et al

in ENDO 2008: 90th Annual Meeting of the Endocrine Society - Abstract book (2008)

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See detailL’usage de l’archive anonyme dans la photographie contemporaine
Bawin, Julie ULg

Conference (2008)

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See detailA thermo-hydro-mechanical stress-strain framework for modelling the performance of clay barriers in deep geological repositories for radioactive waste
Laloui, Lyesse; François, Bertrand ULg; Nuth, Mathieu et al

in 1st European Conf. on Unsaturated Soils (2008)

Assessing the performance of deep geological repositories for heat-generating radioactive waste requires reliable predictions of the Thermo-Hydro-Mechanical (THM) behaviour of the clay barriers (the ... [more ▼]

Assessing the performance of deep geological repositories for heat-generating radioactive waste requires reliable predictions of the Thermo-Hydro-Mechanical (THM) behaviour of the clay barriers (the buffer material as well as the host rock/clay). This represents an important element of the waste isolation system. In order to provide reasonable assurance that clay barriers will ensure nuclear waste isolation, it is essential to understand their behaviour under a variety of environmental conditions. The phenomena involved are complex, and adequately understanding the constitutive behaviour of clays and modelling their evolution is challenging. The stress-strain material behaviours that need to be understood and modelled include drying and wetting in nonisothermal conditions and heating-cooling in non-saturated conditions. Other aspects should be considered, such as drying induced cracks and the role of the material structure and its multi-porosity. The difficulty of some of these tasks is increased by the fact that some effects are coupled. The fundamental behaviours of clayey materials under the considered THM conditions are first identified and highlighted for deep repository experiments. We then propose a mechanical stress-strain constitutive framework to model the behaviour of clay barriers. This includes aspects such as the thermo-plastic behaviour of saturated and unsaturated materials. In the third part, we show that the proposed framework allows us to experimentally explain observed behaviours and to predict the THM behaviour of clay barriers. [less ▲]

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See detailHealthy and safe food for everybody
Jijakli, Haissam ULg

Conference (2008)

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See detailAn elasto-viscoplastic model for chalk including suction effects
Collin, Frédéric ULg; De Gennaro, Vincenzo; Delage, Pierre et al

in Toll, David (Ed.) Unsaturated Soils: Advances in Geo-Engineering (2008)

During the six years long Pasachalk project devoted to the mechanical behaviour of high porosity chalks from North Sea oilfields, the constitutive model Pasachalk (Collin et al., 2002) was proposed based ... [more ▼]

During the six years long Pasachalk project devoted to the mechanical behaviour of high porosity chalks from North Sea oilfields, the constitutive model Pasachalk (Collin et al., 2002) was proposed based on the Barcelona Basic Model (BBM) (Alonso et al., 1990). The approach was based on the similarities found between the oil-water interactions (oil and water being the non wetting and wetting fluid respectively) in oil reservoir chalk and the air-water interactions in unsaturated soils. This approach appeared to be relevant to in-terpret the subsidence of the seafloor during waterflooding operations for enhanced oil recovery that has been observed in North Sea oilfields (e.g. Ekofisk oilfield). Another important component of subsidence was then related to the creep behaviour of the multiphase chalk (De Gennaro et al., 2003). A modified Pasachalk model was proposed to account for time effects using the framework of Perzyna’s viscoplasticity (1964) but without considering suction effects. Based on available experimental results (Priol et al., 2007), a modified version of the viscoplastic Pasachalk model including suction effects is proposed in this paper. [less ▲]

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See detailAryl Hydrocarbon Receptor interacting protein (AIP) mutations in a cohort of Brazilian Familial isolated pituitary adenomas : relation to aggressive behaviour
Naves, L. A.; Azevedo, M. F.; Casulari, L. A. et al

in XIV Simposo Internacinal de Neuroendocrinologia - Endocrinologia and Metabologia - Arquivos Brasileiros de Endocrinologia e Metabologia : Fevereiro 2008, 52, suplemento 1 (2008)

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See detailEvolution de l’économie agricole en Province de Liège
Duquesne, Brigitte ULg

Conference (2008)

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See detailA self-critical analysis of a running research project to improve the sustainability of public place management
Schmitz, Serge ULg; De Graef, Sarai

in Girardot, Jean Jacques; Miedes, Blanca (Eds.) International Conference of territorial intelligence, Papers on Territorial Intelligence and Governance, Participatory Action-Research and Territorial Development (2008)

The paper presents the way a framework for (self-)assessment to improve the sustainability of practices in public places and spaces was created during the first months of the Topozym action research. It ... [more ▼]

The paper presents the way a framework for (self-)assessment to improve the sustainability of practices in public places and spaces was created during the first months of the Topozym action research. It underlines obstacles encountered and solutions found by a multidisciplinary team in creating this tool. Based on this critical self-analysis, the difficulties of putting the theoretical ideas on action research in practice are discussed. [less ▲]

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See detailGeneration of arbitrary Dicke states in remote qubits using linear optics
Maser, A.; Thiel, C.; Schilling, U. et al

Conference (2008)

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