References of "2009"
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See detailFeline immunodeficiency. ABCD guidelines on prevention and management
Hosie, M. J.; Addie, D.; Belak, B. et al

in Journal of Feline Medicine and Surgery (2009), 11

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See detailCorrelation between the roughness of the substrate surface and the debonding risk
Perez, Fabien; Morency, Maxim; Bissonnette, Benoît et al

in Alexander, M. G.; Beushausen, H.-D.; Dehn, F. (Eds.) et al Concrete Repair, Rehabilitation and Retrofitting II (2009)

This paper presents the influence of substrate surface preparation on the adhesion strength of repaired beams system. Bond between new and old concrete has been the subject of a number of investigations ... [more ▼]

This paper presents the influence of substrate surface preparation on the adhesion strength of repaired beams system. Bond between new and old concrete has been the subject of a number of investigations, but in most cases, only adhesion strength was addressed. This parameter was used to estimate the durability and/or the debonding risk for repaired structure and it’s a generally accepted auditing standards. Usually, surface preparation of the substrate concrete is considered essential to achieve a durable repair because of its influence on the bond strength. To better understand debonding mechanism, in particular these related to surface preparation, roughness parameters were calculated to quantify the influence of surface preparation on the structural behaviour. Using this approach, repair beams prepared by way of four (4) concrete surface preparations were characterized. Results obtained show that repaired beams presenting a substrate with a rough surface permit to achieve a monolithic behaviour of the repaired system. Opposite structural behaviour, with large debonding, was recorded for those having smooth surface. However, all surface preparations used have promoted the same bond strength regardless the roughness of the substrate. The resulting analysis highlights the relation between roughness parameter αrough and the debonding mechanism of repaired beams. Such results will be useful to better predict the performance of concrete repairs. [less ▲]

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See detailSélection d'espèces ligneuses adaptées à la fixation biologique de dunes au Niger
Laminou Manzo, Ousmane; Campanella, Bruno ULg; Paul, Roger ULg

in Geo-Eco-Trop (2009), 33

Seven woody species, of which five natives (Acacia senegal, A. raddiana, A. nilotica, Bauhinia rufescens, Balanites aegyptiaca) and two imported (Prosopis juliflora and P. chilensis) have been tested in ... [more ▼]

Seven woody species, of which five natives (Acacia senegal, A. raddiana, A. nilotica, Bauhinia rufescens, Balanites aegyptiaca) and two imported (Prosopis juliflora and P. chilensis) have been tested in terms of biological sand dunes fixation in the Southern east of Niger Republic. In nursery, species underwent a water stress by interrupting the watering during six days. Foliar hydration has been determined in order to evaluate their capacity to limit water loss. In a field experiment, species have been planted on a mechanically prefixed sand dune cord in order to test their ability for stabilization of sand dunes. Survival rates during the first three years have been calculated and height growth was measured. In nursery, results showed that, after six days of water stress, Acacia senegal, A. raddiana, P. chilensis and A. nilotica are the four species limiting the best the water losses. Results on site showed that the best combination in sand dunes fixation, in this zone, would be the association of one or the other of Prosopis (high survival rate and fast growth) with A. raddiana and/or A. nilotica (survival and growth relatively substantial and more important economic interest). [less ▲]

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See detailChlamydophila felis infection. ABCD guidelines on prevention and management
Gruffydd-Jones, T.; Addie, D.; Belak, B. et al

in Journal of Feline Medicine and Surgery (2009), 11

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See detail„Die Familie Schroffenstein“
Gerrekens, Louis ULg

in Breuer, Ingo (Ed.) Kleist-Handbuch (2009)

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See detailDecoherence, entanglement and irreversibility in quantum dynamical systems with few degrees of freedom
Jacquod, Ph; Petitjean, Cyril ULg

in Advances in Physics (2009), 58(2), 67-196

In this review we summarize and amplify recent investigations of coupled quantum dynamical systems with few degrees of freedom in the short-wavelength, semiclassical limit. Focusing on the correspondence ... [more ▼]

In this review we summarize and amplify recent investigations of coupled quantum dynamical systems with few degrees of freedom in the short-wavelength, semiclassical limit. Focusing on the correspondence between quantum and classical physics, we mathematically formulate and attempt to answer three fundamental questions. (i) How can one drive a small dynamical quantum system to behave classically? (ii) What determines the rate at which two single-particle quantum-mechanical subsystems become entangled when they interact? (iii) How does irreversibility occur in quantum systems with few degrees of freedom? These three questions are posed in the context of the quantum-classical correspondence for dynamical systems with few degrees of freedom, and we accordingly rely on two short-wavelength approximations to quantum mechanics to answer them: the trajectory-based semiclassical approach on the one hand, and random matrix theory on the other hand. We construct novel investigative procedures towards decoherence and the emergence of classicality out of quantumness in dynamical systems coupled to external degrees of freedom. In particular, we show how dynamical properties of chaotic classical systems, such as local exponential instability in phase space, also affects their quantum counterparts. For instance, it is often the case that the fidelity with which a quantum state is reconstructed after an imperfect time-reversal operation decays with the Lyapunov exponent of the corresponding classical dynamics. For related reasons, but perhaps more surprisingly, the rate at which two interacting quantum subsystems become entangled can also be governed by the subsystem's Lyapunov exponents. Our method allows us to differentiate quantum coherent effects (those related to phase interferences) from classical ones (those related to the necessarily extended envelope of quantal wavefunctions) at each stage in our investigations. This makes it clear that all occurrences of Lyapunov exponents we witness have a classical origin, although they require rather strong decoherence effects to be observed. We extensively rely on numerical experiments to illustrate our findings and briefly comment on possible extensions to more complex problems involving environments with many interacting dynamical systems, going beyond the uncoupled harmonic oscillators model of Caldeira and Leggett. [less ▲]

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See detailLe jeu de l'acteur: une nouvelle méthode pour aborder l'affirmation de soi. Résultats d'une première étude portant sur trois groupes et follow-up
Delvaux, Muriel ULg; Sarto, Danielle; Roodthooft, S. et al

in Revue Francophone de Clinique Comportementale et Cognitive (2009)

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See detailNon-native variëteiten van het Nederlands: verwerving en didactiek
Rasier, Laurent ULg

Conference (2009)

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See detailAmesurons-nous : grandeurs, Unités & Cie
Jaminon, Martine ULg; Vercheval, catherine; Wallenborn, Jean et al

Learning material (2009)

plaquette de l'exposition sur le thème des mesures dans les différents domaines des sciences - étalons- unités - mesures directes et indirectes...

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See detailLes quartiers durables : processus de production et reproductibilité
Marique, Anne-Françoise ULg

Master's dissertation (2009)

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See detailDesigning Steel Structures for Fire Safety
Franssen, Jean-Marc ULg; Kodur, Venkatesh; Zaharia, Raul

Book published by Taylor & Françis Ed. (2009)

In this book the information relevant to fire design of steel structures is presented in a systematic way in seven chapters. Each Chapter begins with an introduction of various concepts to be covered and ... [more ▼]

In this book the information relevant to fire design of steel structures is presented in a systematic way in seven chapters. Each Chapter begins with an introduction of various concepts to be covered and follows with detailed explanation of the concepts. The calculation methods as relevant to code provisions (in Europe, North America or other continents) are discussed in detail. Worked examples relevant to calculation methodologies on simple structural elements are presented. For the case of complete structures guidance on how analysis can be carried out is presented. Chapter 1 of the book is devoted to providing relevant background information to codes and standards and principles of fire resistance design. The chapter discusses the fire safety design philosophies, prescriptive and performance-based design fire safety design issues. Chapter 2 deals with basis of design and mechanical loads. The load combinations to be considered for fire design of structures, as per European and North American codes and standards, are discussed. Chapter 3 discusses the detailed steps involved in establishing the fire scenarios for various cases. Both Eurocode and North American temperature-time relationships are discussed. Procedures in this section allow the designer to establish the time-temperature relationships or heat flux evolutions under a specified design fire. Chapter 4 deals with steps associated in establishing the temperature history in the steel structure, resulting from fire temperature. The various approaches for undertaking thermal analysis by simple calculation models are discussed. Chapter 5 presents the steps associated for establishing the mechanical response of a structure exposed to fire. The possibilities for analysis at different levels: member level, sub-structure level and global level are discussed. Full details related to simple calculation methods for undertaking strength analysis at member level are presented. Chapter 6 is devoted to fire resistance issues associated with design of joints. The steps associated with the fire resistance of a bolted or a welded joint through simplified and detailed procedure are discussed. Chapter 7 deals with thermal and mechanical analysis through advanced calculation models. The procedures involved in the sub-structure analysis or global structural analysis under fire exposure is fully discussed. Case studies are presented to illustrate the detailed fire resistance analysis of various structures. Chapter 8 presents four design examples showing how a complex structure can be designed using the concept of element or sub-structure analysis. The book concludes with two Annexes which present some of the design information related to material properties and temperature profiles. Annex 1 focuses on thermal properties of structural steel and commonly used insulation materials and resulting temperature profiles in steel. Annex 2 focuses on mechanical properties of structural steel. [less ▲]

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See detailPrésentation de "Philosophie et histoire des religions" de Béatrice Dessain
Steinmetz, Rudy ULg

Diverse speeche and writing (2009)

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See detailLa passion de la recherche
Fournier, Bernard ULg

in Reuchamps, Min; Grandjean, Geoffrey; Flaba, Elodie (Eds.) "Dessinez la Belgique" : Comment les jeunes Belges francophones voient le fédéralisme (2009)

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See detailFrom Root Zone Modelling To Regional Forecasting Of Nitrate Concentration In Recharge Flows - The Case Of The Walloon Region (Belgium)
Sohier, Catherine ULg; Degre, Aurore ULg; Dautrebande, Sylvia

in Journal of Hydrology (2009), 369(3-4), 350-359

In order to model the nitrate concentration of the recharge water in a spatially distributed way for the agricultural areas of the Walloon Region of Belgium, the EPIC model was first adapted to the ... [more ▼]

In order to model the nitrate concentration of the recharge water in a spatially distributed way for the agricultural areas of the Walloon Region of Belgium, the EPIC model was first adapted to the specific soil description by modifying the reservoir sizes. It was also adapted to the regional crop production by modifying classcrop files in relation with observed data (both aerial and underground crop growth, yield) in wheat, sugar beet, and potato fields. As the vadose zone presents a depth between 1.5 and 104 m in this region, new reservoirs were added according to the geological descriptions available. Deep nitrate transfer was validated in a specific site where cropping history was known. Nitrate nitrogen after harvest in the root zone was validated for wheat within different crop rotations using the first results of a nitrate-monitoring program planned by the authorities to test the effectiveness of the mitigation measures in agriculture. This extended model was also linked to a GIS (geographical information system) using 1 km2-cells. All the required data were rasterised to allow HRU (hydrological response unit) identification within the cells. The cell’s daily water flows are weighted flows of each HRU depending on their relative area within the cell. Water balances at catchment scale allow us to validate the calculation. Taking into account the evolution of distributed land use and observed climatic data, we have built maps of fast indicators and long-term indicators. The first map represents nitrate concentration in the water leaving the root zone and the second one represents the time transfer for nitrate from 1.5 m depth to the groundwater table and nitrate concentration in recharge water. These maps constitute major tools for nitrogen management at a regional level. [less ▲]

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See detailDetection and Correction of Outliers for Fatty Acids Contents Measured by Mid-Infrared Spectrometry Using Random Regression Test-Day Models
Soyeurt, Hélène ULg; Dardenne, Pierre; Gengler, Nicolas ULg

in Book of Abstracts of the 60th Annual Meeting of the European Association for Animal Production (2009)

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See detailDans le "Gyron" de Marguerite de Croy, comtesse de Lalaing (1508-1549)
Adam, Renaud ULg

in Adam, Renaud; Marchandisse, Alain (Eds.) Le livre au fil de ses pages : actes de la 14e journée d'étude du réseau de médiévistes belges de langue française, Université de Liège, 18 novembre 2005 (2009)

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