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See detailLes supports médiatiques du discours religieux
Dondero, Maria Giulia ULg

in Nouveaux Actes Sémiotiques (2008, December 17)

Cet article interroge la relation intermédiale entre peinture et photographie, et notamment la transformation des pratiques de réception liées à la transduction de certaines iconographies religieuses d’un ... [more ▼]

Cet article interroge la relation intermédiale entre peinture et photographie, et notamment la transformation des pratiques de réception liées à la transduction de certaines iconographies religieuses d’un médium à l’autre. Il décrit les effets de sens que les textes picturaux et photographiques engendrent lorsqu’ils sont censés représenter non seulement l’invisible, mais aussi la transcendance. Si la peinture religieuse a toujours été légitimée à représenter Jésus-Christ, les saints et les visions de l’au-delà, la photographie artistique a au contraire subi des « contraintes interprétatives » attribuées par la doxa à sa genèse à empreinte. Si la doxa a donc relégué les textes photographiques artistiques à la seule fonction de représenter l’« ici-et-maintenant », le cas de la photo dévotionnelle est différent. En effet, la photographie dévotionnelle, engendrant des pratiques productives, interprétatives et communicationnelles tout à fait différentes de celles de la photo artistique, a mis en scène une autre conception du médium photographique, qui le met en communication étroite avec la syntaxe figurative de l’icône, ou même avec le saint suaire de Turin – image qui n’est pas faite de main d’homme (acheiropoïètes) et qui devient support d’une révélation sans médiation. [less ▲]

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See detailBiohydrogen production from anaerobic digestion of carbohydrate organic matter.
Hiligsmann, Serge ULg; Masset, Julien ULg; Beckers, Laurent ULg et al

Poster (2008, December 16)

Hydrogen has received wide attention in the last decade as a clean energy vector. The major advantage of energy from hydrogen is the zero carbon emissions, since the utilization of hydrogen, either via ... [more ▼]

Hydrogen has received wide attention in the last decade as a clean energy vector. The major advantage of energy from hydrogen is the zero carbon emissions, since the utilization of hydrogen, either via combustion or via fuel cells, results in pure water. At industrial scale, steam reformation of methane is currently the major hydrogen producing process. However recently, increasing interest has been paid on biological production of hydrogen gas. Indeed, biohydrogen generation from renewable biomass would reduce dependence on fossil fuel, decrease the carbon dioxide emissions and produce usable bioenergy. Biological production of hydrogen using anaerobic bacteria is an exciting and promising new area of technology development that offers the potential production of usable hydrogen from a variety of renewable resources such as carbohydrates from agriculture or agro-food industries. This biological system is called dark fermentation and the most interesting bacteria strains are Clostridium sp. The investigations carried out at CWBI involve selection and characterization of bacteria strains, optimization of the biotechnological process and design of highly efficient bioreactors. [less ▲]

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See detailEl derecho de propiedad, la función social del suelo y la normativa urbana
Cabrera Quispe, Juan Edson ULg

in Dimensiones (2008), 1(winter), 120-134

Cuál es el origen de la planeación urbana? del ordenamiento del territorio? de la reglamentación urbana? Sin duda desde que los derechos de propiedad se han constituido, ha sido necesario un conjunto de ... [more ▼]

Cuál es el origen de la planeación urbana? del ordenamiento del territorio? de la reglamentación urbana? Sin duda desde que los derechos de propiedad se han constituido, ha sido necesario un conjunto de herramientas diferentes, algunas llamadas planes. Las cuales tienen la función de intervenir sobre las libertades y derechos de propiedad a fin de evitar el abuso absoluto de ellos. En ese marco la posibilidad de ejercer derechos sobre la propiedad también implica responsabilidades, siendo una de las más importantes la función social. Ella es interpretada desde el urbanismo como la llave fundamental para promover instrumentos de gestión viable y eficiente, traducidos en legislaciones sobre el suelo, normas urbanas y otros. La posibilidad de reformar la normativa urbana de la ciudad de Cochabamba es una ocasión importante y fundamental para considerar la oportunidad que nos brinda la función social constituida en nuestro marco jurídico fundamental, expresado en la CPE y el Código Civil. Finalmente la función social y también la función ecológica de la propiedad inmobiliaria y su reconocimiento ontológico, permite el rediseño elemental de una nueva norma urbana sin la necesidad expresa de reformas constitucionales o marcos legales específicos como la tan demandada ley de urbanismo. [less ▲]

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See detailOptimalisation de l'expression orale en langue étrangère. Formation pour l'I.F.A.P.M.E.
Simons, Germain ULg; Pagnoul, Pierre ULg

Learning material (2008)

Cette formation destinée aux formateurs de langues étrangères de l'IFAPME portait sur l'optimalisation de l'expression orale en langues étrangères. Quatre grands volets constituaient cette communication ... [more ▼]

Cette formation destinée aux formateurs de langues étrangères de l'IFAPME portait sur l'optimalisation de l'expression orale en langues étrangères. Quatre grands volets constituaient cette communication. Dans les deux premiers volets, nous avons établi une distinction entre l'expression et l'interaction orales, puis avons présenté la typologie des productions langagières (descriptif/informatif ; injonctif/incitatif ; argumentatif ; narratif) proposée dans le document "Familles de tâches en langues modernes" (CFB). Dans le troisième volet, nous avons travaillé sur le genre textuel "débat". A partir d'un exemple concret proposé aux participants, nous avons montré ce que cette production textuelle à dominante argumentative mobilise comme savoirs au niveau du lexique, des fonctions langagières et de la grammaire, ainsi que sur le plan des stratégies de communication. Un mode particulier d'organisation de la classe - "l'aquarium"- a été présenté, puis testé par les participants. Enfin, dans le quatrième volet, nous avons montré comment ce débat pouvait être inséré dans le canevas didactique "traditionnel" et dans le canevas par "situation-problème". [less ▲]

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See detailLogistiques et energies
Arda, Yasemin ULg; Nondonfaz, Robert ULg

Article for general public (2008)

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See detailStructure des communautés de plantes herbacées sur les Grands Causses : Stratégies fonctionnelles des espèces et interactions interspécifiques
Fayolle, Adeline ULg

Doctoral thesis (2008)

Plant community response to grazing management was studied on the INRA La Fage experimental station, Larzac Causse. Land use practices were considered as a disturbance and resource filter that remove ... [more ▼]

Plant community response to grazing management was studied on the INRA La Fage experimental station, Larzac Causse. Land use practices were considered as a disturbance and resource filter that remove species. The integrated approach of community structure used in this study was centred on plant functional traits. Continuous variations of plant traits associated with resource acquisition and early phenology indicated the replacement of stress tolerant species by ruderals along the gradient of land use intensity (grazing avoidance). Graminoids were particularly abundant in these communities. Changes in species identity and species functional identity were consistent with the grazing tolerance strategy. At the community scale, the strong functional convergence among dominant species confirmed the filtering effect of grazing management on these traits. Species richness reached its maximum at intermediate grazing. Maximal richness was associated with the coexistence of many growth forms and an important functional richness. These results are interpreted as an extension of the intermediate disturbance hypothesis to the traits of coexisting species. Finally, plant interaction dynamics experienced by five target species allowed us to identify the tendency of facilitated survival and intensely depressed biomass. The effect of communities was roughly similar although huge differences in specific and functional structure. The response to the least from competition and benefited the most from facilitation. [less ▲]

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Peer Reviewed
See detailComparison of 2D turbulence models for steady flows computation in a macro-rough channel
Erpicum, Sébastien ULg; Meile, Tobias; Dewals, Benjamin ULg et al

in 2nd International Symposium on Shallow Flows (2008, December 11)

A 2D numerical flow model, developed at the Laboratory of Hydrology, Applied Hydrodynamics and Hydraulic Constructions (HACH) at ULg, has been applied to flows in a macro-rough channel using three ... [more ▼]

A 2D numerical flow model, developed at the Laboratory of Hydrology, Applied Hydrodynamics and Hydraulic Constructions (HACH) at ULg, has been applied to flows in a macro-rough channel using three different approaches to compute the turbulence effects. Both the first and second ones are based on algebraic expressions of the turbulent viscosity, and the third one uses a depth-integrated k- type model involving two additional partial differential equations. Data for the comparison have been provided by experiments conducted at the Laboratory of Hydraulic Constructions (LCH) at EPFL, showing different two-dimensional flow characteristics in varied configurations of large scale cavities in depressions at the side walls of the flume. Despite the strongly different modeling approaches used in the three models to handle the turbulence effects, the numerical models give generally similar and satisfactory agreement between experimental and numerical results regarding backwater curves. [less ▲]

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See detailComment aider au redémarrage des entrepreneurs de seconde chance ?
Van Caillie, Didier ULg; Crutzen, Nathalie ULg

Scientific conference (2008, December 10)

This document presents key elements to understand the context in which restarting entrepreneurs are operating and to identify some measures Public Authorities may launch for assisting and sustaining ... [more ▼]

This document presents key elements to understand the context in which restarting entrepreneurs are operating and to identify some measures Public Authorities may launch for assisting and sustaining restarters. [less ▲]

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See detailApproche physiopathologique du nouveau-né et de l'enfant en soins intensifs
Battisti, Oreste ULg

Scientific conference (2008, December 10)

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See detailOUFTI-1, the first student nanosatellite of Belgium
Pisane, Jonathan ULg

Speech/Talk (2008)

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Peer Reviewed
See detailImpact of cyclic hypoxia on HIF-1a regulation in endothelial cells: new insights for anti-tumor treatments
Martinive, Philippe ULg

in FEBS Journal (2008)

Impact of cyclic hypoxia on HIF-1alpha regulation in endothelial cells - new insights for anti-tumor treatments.Martinive P, Defresne F, Quaghebeur E, Daneau G, Crokart N, Grégoire V, Gallez B, Dessy C ... [more ▼]

Impact of cyclic hypoxia on HIF-1alpha regulation in endothelial cells - new insights for anti-tumor treatments.Martinive P, Defresne F, Quaghebeur E, Daneau G, Crokart N, Grégoire V, Gallez B, Dessy C, Feron O. Unit of Pharmacology and Therapeutics, Université catholique de Louvain, Brussels, Belgium. Heterogeneities in tumor blood flow are associated with cyclic changes in pO(2) or cyclic hypoxia. A major difference from O(2) diffusion-limited or chronic hypoxia is that the tumor vasculature itself may be directly influenced by the fluctuating hypoxic environment, and the reoxygenation phases complicate the usual hypoxia-induced phenotypic pattern. Here, we determined the cyclic hypoxia-driven pathways that modulate hypoxia inducible factor (HIF)-1alpha abundance in endothelial cells to identify possible therapeutic targets. We found that exposure of endothelial cells to cycles of hypoxia/reoxygenation led to accumulation of HIF-1alpha during the hypoxic periods and the phosphorylation of protein kinase B (Akt), extracellular regulated kinase (ERK) and endothelial nitric oxide synthase (eNOS) during the reoxygenation phases. We identified stimulation of mitochondrial respiration and activation of the phosphoinositide-3 kinase (PI3K)/Akt pathway during intervening reoxygenation periods as major triggers of the stabilization of HIF-1alpha. We also found that the NOS inhibitor nitro-l-arginine methyl ester further stimulated the cyclic hypoxia-driven HIF-1alpha accumulation and the associated gain in endothelial cell survival, thereby mirroring the effects of a PI3K/Akt inhibitor. However, combination of both drugs resulted in a net reduction in HIF-1alpha and a dramatic in decrease in endothelial cell survival. In conclusion, this study identified cyclic hypoxia, as reported in many tumor types, as a unique biological challenge for endothelial cells that promotes their survival in a HIF-1alpha-dependent manner through phenotypic alterations occurring during the reoxygenation periods. These observations also indicate the potential of combining Akt-targeting drugs with anti-angiogenic drugs, in particular those interfering with the NO pathway. PMID: 19077164 [PubMed - as supplied by publisher [less ▲]

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See detailComment évaluer les effets de l'éducation ?
Vandoorne, Chantal ULg

in Eduquer les mangeurs ? De l'éducation nutritionnelle à l'éducation alimentaire (2008, December 09)

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See detailLa Commune de 1871 comme forme (du) politique. Autour de L’État et la révolution (Lénine, 1917)
Bolmain, Thomas ULg

Scientific conference (2008, December 06)

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See detailBehavior of Deep Reinforced Concrete Beams under Monotonic and Reversed Cyclic Load
Mihaylov, Boyan ULg

Doctoral thesis (2008)

Non-slender reinforced concrete beams find extensive application in cases where heavy loads need to be transferred over a given span. The safety of this kind of structural elements is often critical for ... [more ▼]

Non-slender reinforced concrete beams find extensive application in cases where heavy loads need to be transferred over a given span. The safety of this kind of structural elements is often critical for the safety of the structure as a whole. The research described in this thesis is devoted to studying the behaviour of lightly-reinforced non-slender beams under monotonic and reversed cyclic loads, as particular consideration is given to the load-bearing mechanisms which occur in moderately-deep beams. The choice of this topic was motivated in part by verification studies which show that the current code procedures for shear design of members without web reinforcement are least accurate in the range of transition from deep to slender beams. Furthermore, the issue of cyclic response of lightly-reinforced deep beams is of great importance for seismic assessment of existing structures, especially if the similarity between the load-bearing mechanisms in deep beams and those in other non-slender components such as coupling beams, squat shear walls, and frame joints is recognized. An experimental program consisting of ten tests of large non-slender reinforced concrete beams has been performed. All specimens failed in shear after transition from beam load-bearing mechanism to arch action (specimens without stirrups) or truss actions (specimens with stirrups). A suggested kinematic model was successfully used for interpretation of the various deformation measurements. The results showed that part of the ultimate shear was carried in the cracked concrete. It was concluded that load reversals had little effect on the overall response. A test of deep beam provided with single bar #18 demonstrated that anchorage by anchor heads is effective even when the biggest ASTM reinforcing bar is used. Comparison between experimentally-obtained and calculated shear strengths showed that the CSA code rendered reasonably conservative predictions compared to the mostly unconservative results of the ACI and EC2 codes. Theoretical work resulted in a derivation of an improved strut-and-tie model (ISTM) which is based on the CSA shear provisions but accounts for shear carried under the critical diagonal cracks of non-slender beams without web reinforcement. Verification against a large number of tests showed that the new model is consistent with physical observations and explains the transition from deep to slender beams. Furthermore, it was shown that the ISTM can be used in combination with the above-mentioned kinematic model for estimation of the ultimate displacement and deformed shape of non-slender beams. [less ▲]

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See detailHigh Pathogenic Avian Influenza in Poultry Production Systems in Vietnam: Tentative Approach for an HACCP-like Risk Scoring Methodology
Le Bas, Cedric; Phan Dang, Thang ULg; Desvaux, Stéphanie et al

Scientific conference (2008, December 04)

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