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See detailFréquence et importance du charriage dans les rivières du massif ardennais
Houbrechts, Geoffrey ULg; Hallot, Eric ULg; Gob, F. et al

in Géographie physique et Quaternaire (2006), 60(3), 247-258

Le transport de la charge de fond de plusieurs rivières du massif ardennais (Belgique) a été analysé grâce à différentes techniques de marquage de galets (peinture, charge métallique, émetteurs radio ... [more ▼]

Le transport de la charge de fond de plusieurs rivières du massif ardennais (Belgique) a été analysé grâce à différentes techniques de marquage de galets (peinture, charge métallique, émetteurs radio). Ces rivières possèdent un bassin versant dont la taille est comprise entre 0,3 et 2700 km². Les observations ont permis de mettre en évidence le débit à partir duquel débute le charriage. Pour des rivières importantes (bassin versant supérieur à 500 km²), cette mise en mouvement se produit pour des débits légèrement inférieurs au débit à plein bord (0,7 à 1 Qb), débits qui se présentent en moyenne 5 à 11 jours par an. Dans les rivières ardennaises de taille intermédiaire (bassin versant compris entre 100 et 500 km²), on constate que le charriage débute pour un débit proche de 0,5 fois le débit à plein bord, avec des récurrences de l’ordre de 0,3 an et une durée de charriage variant entre 8 et 12 jours par an. Dans les rivières de dimension modeste (bassin versant inférieur à 100 km²), il apparaît que la mise en mouvement de la charge de fond se produit pour des débits compris entre 0,5 et 0,8 Qb, mais la récurrence de ces débits est relativement faible et le charriage peut se produire jusqu’à 20 jours par an. Par ailleurs, le transport solide par charriage a été évalué à l'aide de pièges à sédiments dans les rivières de petite dimension (bassin versant inférieur à 10 km²) ; il est relativement peu important dans les bassins forestiers (de l'ordre de 0,5 t.km-².an-1), notamment en raison de la multiplication des embâcles végétaux qui accroissent la rugosité et provoquent une forte dissipation d'énergie. Dans les rivières plus importantes, le transport solide a été estimé entre 0,4 et 2,5 t.km-².an-1 grâce à l'analyse des quantités curées systématiquement aux mêmes sites et à la réalisation de levés topographiques de contrôle. Nous avons ensuite analysé l’évolution des quantités charriées en fonction de la puissance spécifique au plein bord développée par ces rivières. La relation établie sur la base de ces données a permis de mettre en évidence le déficit en sédiments de certaines rivières ainsi que plusieurs facteurs influençant le charriage. [less ▲]

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See detailThermal characterisation of urban fabrics using GIS and Townscope modelling tool
Cardenas-Jirón; Azar, S.; Teller, Jacques ULg

in Proc. of 4th European Conference on Energy Performance & Indoor Climate in Buildings (EPIC) (2006)

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See detailRelations bancaires et dimension familiale. Questions choisies de droit international privé
Wautelet, Patrick ULg

in Tison, Michel (Ed.) Banque et famille / Bank en familie (2006)

In this paper, I review various questions related to the relationships between banks and private clients, taking into account the impact of the entry into force of the Belgian Code of Private ... [more ▼]

In this paper, I review various questions related to the relationships between banks and private clients, taking into account the impact of the entry into force of the Belgian Code of Private International Law. Among the questions analysed, I review the position of the bank when faced with clients who are married and the impact of the law of marriage. I also review the impact of the death of a client - what are the duties imposed to the bank, how can the bank deal with prospective heirs. All of this focusing exclusively on cross-border relations and hence on questions of applicable law. [less ▲]

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See detailInterfollicular fibrosis in the thyroid of the harbour porpoise: An endocrine disruption?
Das, Krishna ULg; Vossen, Arndt; Tolley, Kristal et al

in Archives of Environmental Contamination & Toxicology (2006), 51

Previous studies have described high levels of polychlorobiphenyls (PCB), polybrominated diphenylether (PBDE), toxaphene, ,p0-dichlorodiphenyltrichloroethane (DDT), and ,p0 ... [more ▼]

Previous studies have described high levels of polychlorobiphenyls (PCB), polybrominated diphenylether (PBDE), toxaphene, ,p0-dichlorodiphenyltrichloroethane (DDT), and ,p0-dichlorodiphenyldichloroethylene (DDE) in the blubber of the harbour porpoise from the North Sea raising the question of a potential endocrine disruption in this species. In the present study, the thyroids of 57 harbour porpoises from the German and Danish (North and Baltic Seas), Norwegian, and Icelandic coasts have been collected for histological and immunohistological investigations. The number of follicles and the relative distribution of follicles, connective, and solid tissues (%) were quantified in the thyroid of each individual. Then, the potential relationship between the thyroid morphometry data and previously described organic compounds (namely, PCB, PBDE, toxaphene, DDT, and DDE) was investigated using factor analysis and multiple regressions. Thyroid morphology differed strongly between ampling sites. Porpoises from the German (North and Baltic Seas) and Norwegian coasts displayed a high percentage of connective tissues between 30 and 38% revealing severe interfollicular fibrosis and a high number of large follicles (diameter >200 lm). A correlation-based principal component analysis (PCA) revealed two principal components explaining 85.9% of the total variance. The variables PCB, PBDE, DDT, and DDE compounds loaded highest on PC1 whereas toxaphene compound loaded most on PC2. Our results pointed out a relationship between PC1 (PCBs, PBDE, DDE, and DDT compounds) and interfollicular fibrosis in the harbour porpoise thyroids. Such an association is not alone sufficient for a cause–effect relationship but supports the hypothesis of a contaminant-induced thyroid fibrosis in harbour porpoises raising the question of the longterm viability in highly polluted areas. [less ▲]

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See detailAnimal models of drug addiction: advantages and limitations
Quertemont, Etienne ULg

in Acta Neurologica Belgica (2006), 106

Various animal models have been developed to investigate the neurobiological and behavioral mechanisms of drug addiction. The most popular of these animal models include the locomotor sensitization ... [more ▼]

Various animal models have been developed to investigate the neurobiological and behavioral mechanisms of drug addiction. The most popular of these animal models include the locomotor sensitization paradigm, the place conditioning procedure and the self-administration technique. With these techniques, it is possible to mimic in rodents the major aspects of human drug addiction. The self-administration procedure is the most widely used and show an excellent natural and predictive validity. In the self-administration protocol, experimental animals, usually rats or mice, are allowed to press a lever in order to gain access to a small dose of an addictive drug. The drug may be given to the animal through the oral, the intravenous or the intracranial route of administration, according to the purpose of the study. In recent years, the classical self-administration procedure has been adapted to study the specific neurobiological basis of drug relapse. In this now called drug reinstatement paradigm, when drug self-administration behaviors are well established, an extinction procedure starts, during which lever pressing is no longer reinforced by drug access. After a number of such extinction sessions, lever pressing gradually declines and eventually stops. Drug-seeking behaviors are therefore said to be extinguished. It is then possible to test various stimuli in order to investigate whether they reinstate drug-seeking behaviors and use such a reinstatement as an animal model of drug relapse. Three types of stimuli have been shown to reinstate drug-seeking behaviors: a small priming dose of drug, drug-associated cues and a stressful stimuli. The effects of these three relapse-triggering stimuli are mediated by different neurobiological mechanisms, leading to the expectation that they may be targeted by different pharmacotherapeutic and behavioral interventions. Despite the high value of the current animal models of drug addiction, there show several limitations. In particular, it is difficult to differentiate between self-controlled and compulsive drug use in animals. As only uncontrolled compulsive drug consumption characterizes drug addiction in humans, such a limitation might explain the high frequency of false positive results in animal experiments. Indeed, it is common that therapeutic interventions successfully developed in animals later proved to be disappointing in humans. [less ▲]

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See detailAnalysis of association of GPX5, FUT1 and ESR2 genotypes with litter size in a commercial pig cross population
Buske, Bernd ULg; Sternstein, Ina; Reissmann, Monika et al

in Archiv für Tierzucht = Archives Animal Breeding (2006), 49(3), 259-268

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See detailEtude de la diversité des pucerons et des auxiliaires adiphages relative à la présence d'orties en bordures de champ
Alhmedi, A.; Francis, Frédéric ULg; Bodson, Bernard ULg et al

in Notes Fauniques de Gembloux (2006), 59(2), 121-124

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See detailStrenuous concentric and eccentric isokinetic exercises: specific fatigue patterns ?
Delvaux, François ULg; Bury, Thierry ULg; Lehance, Cédric ULg et al

in Abstract Book “Exercise and muscle physiology” de l’Ecole Doctorale en Sciences de la Motricité (2006)

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See detailProspective survey of digestive tract colonization with enterobacteriaceae that produce ESBLs in intensive care units
Christiaens, Geneviève ULg; Ciccarella, Y.; Damas, Pierre ULg et al

in Journal of Hospital Infection (2006), 62(3), 386-388

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See detailLa Cartographie des Zones Inondées : Approche géomorphologique et Enquêtes de Terrain
Peeters, Alexandre ULg; Van Campenhout, Jean ULg; Donnay, F. et al

in Les risques majeurs en Région wallonne : prévenir en aménageant (2006)

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See detailQTL and candidate genes for fecundity in sows
Buske, Bernd ULg; Sternstein, Ina; Brockmann, Gudrun

in Animal Reproduction Science (2006), 95(3), 167-183

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See detailNormal and aberrant biological self-assembly: Insights from studies of human lysozyme and its amyloidogenic variants
Dumoulin, Mireille ULg; Kumita, Janet; Dobson, Christopher M

in Accounts of Chemical Research (2006), 39

Studies of lysozyme have played a major role over several decades in defining the general principles underlying protein structure, folding, and stability. Following the discovery some 10 years ago that ... [more ▼]

Studies of lysozyme have played a major role over several decades in defining the general principles underlying protein structure, folding, and stability. Following the discovery some 10 years ago that two mutational variants of lysozyme are associated with systemic amyloidosis, these studies have been extended to investigate the mechanism of amyloid fibril formation. This Account describes our present knowledge of lysozyme folding and misfolding, and how the latter can give rise to amyloid disease. It also discusses the significance of these studies for our general understanding of normal and aberrant protein folding in the context of human health and disease. [less ▲]

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See detailImportance of modal cross-correlations on wind loaded structures
Denoël, Vincent ULg; Degée, Hervé ULg; De Ville De Goyet, Vincent ULg

in Proceedings of the 3rd International Conference on Bridge Maintenance, Safety and Management (2006)

In civil engineering applications the dynamic analysis of large structure is often performed in a modal space. This method is known to offer an interesting decrease of the number of degrees of freedom as ... [more ▼]

In civil engineering applications the dynamic analysis of large structure is often performed in a modal space. This method is known to offer an interesting decrease of the number of degrees of freedom as well as a decomposition of the structure’s response in “uncoupled” components. Even if the response in each mode can be computed independently from the responses in the other ones, in the context of stochastic loading, the coherence of these modal responses must be accounted for in the determination of the structural response. These quantities are known as the modal cross-correlations. In this paper we will show that these crosscorrelations can be important (contrarily to what is sometimes thought) even in case of wellseparated natural frequencies. This will be illustrated on the analysis of the famous Viaduct of Millau during an erection stage. [less ▲]

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See detailNon Gaussian Response of Bridges Subjected to Turbulent Wind – Effect of the non Linearity of Aerodynamic Coefficients
Denoël, Vincent ULg; Degée, Hervé ULg

in Proceedings of the 3rd European Conference on Computational Solid and Structural Mechanics (2006)

In the context of a non linear quasi-steady wind loading, this paper shows the importance of the non linearity of the wind loading. More particularly, it focuses of the influence, on the structural ... [more ▼]

In the context of a non linear quasi-steady wind loading, this paper shows the importance of the non linearity of the wind loading. More particularly, it focuses of the influence, on the structural response, of the non linearity of the aerodynamic coefficients. It is shown that, in case of 2-D turbulent flow, the influence of this kind of non linearity may be significant. To do so, statistical characteristics of the loading as well as those of the response are computed in such a turbulent flow. [less ▲]

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See detailThe role of landscape design in improving the microclimate in traditional courtyard buildings in hot arid climates
Attia, Shady ULg

in Proceedings of 23rd International Conference on Passive and Low Energy Architecture - PLEA 2006 (2006)

Arab Islamic landscape design forms a unique source of inspiration for landscape architecture in barren open spaces of the Middle East. Arab Islamic gardens adopted a system marked by perfect ... [more ▼]

Arab Islamic landscape design forms a unique source of inspiration for landscape architecture in barren open spaces of the Middle East. Arab Islamic gardens adopted a system marked by perfect responsiveness to environment. The design of urban landscape and gardens in Arab Islamic culture was similarly guided by the dictation of aridity. The need to provide shade, to prevent dust and to conserve water meant that urban open spaces and gardens were sheltered and enclosed. Alhambra in Moorish Spain and the Al-Suhaymi House in Islamic Cairo are two useful historical references for vernacular Islamic landscape designs. This paper presents an overview of landscape design considerations for the composition of vegetation and water and initial observations of their influence in controlling and improving the microclimate in courtyards buildings as a way of passive cooling in the Middle East region. This paper is a part of a Master’s thesis in the field of passive landscape strategies at Wageningen University. The objective is to identify the comfort improvements potential of successfully-planned and integrated landscape design in traditional courtyard buildings. The layout and plant material of Alhambra, Generalife courts and Al-Suhaymi court in Islamic Cairo are examined and evaluated. This study demonstrates that in arid environments, the landscape planning, the composition of vegetation and water and choice of planting material all have important consequences in creating thermally-pleasant environments. [less ▲]

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See detailRépartition et écologie des reptiles sur le réseau ferroviaire en Wallonie
Graitson, Eric ULg

in Bulletin de la Société Herpétologique de France (2006), 120

In Wallonia, railways constitute valuable habitats for reptile conservation. All autochthonous species have colonized these man-made habitats, but their presence and abundance largely vary among the ... [more ▼]

In Wallonia, railways constitute valuable habitats for reptile conservation. All autochthonous species have colonized these man-made habitats, but their presence and abundance largely vary among the natural regions and the kinds of railways. Reptiles are more frequent along railways with remaining rails than along dismounted unused ways, which represents one half of the network. Although representing only a small part of the network, the unused railways not dismounted are particularly rich in reptiles. This is also the case of some active lines in sunny areas of large valleys and in some large switchyards. Anguis fragilis is the most widespread species on the Walloon railways, but P o d a rcis muralisis the most abundant. In Wallonia, railways seemed to have contributed to the local, more rarely regional, dispersion of at least five species of reptiles: Anguis fragilis, Lacerta agilis, Podarcis muralis, Zootoca viviparaa and Coronella austriaca. Some of these species – specifically Podarcis muralis– have most probably colonized new regions through unexpected transportation by merchandise cars. Finally, reptile populations inhabiting the Walloon railways face several threads. [less ▲]

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See detailTabac et poids corporel
PAQUOT, Nicolas ULg

in Patient Care (2006), (juin), 6-9

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See detailAn investigation on the sliding of pallets on storage racks subjected to earthquake
Degée, Hervé ULg; Denoël, Vincent ULg

in Proceedings of the 7th National Congres on Theoretical and Applied Mechanics (2006)

This article presents some basic aspects of a research about the evaluation of the effect of earthquakes on storage racking systems. In particular, it focuses on the possible sliding and friction of the ... [more ▼]

This article presents some basic aspects of a research about the evaluation of the effect of earthquakes on storage racking systems. In particular, it focuses on the possible sliding and friction of the stored good subjected to a horizontal inertial force. In the first part, a theoretical SDOF system is studied to derive general indications on the sliding behavior and to serve as a reference for the validation of a more advanced numerical model. The second part presents then an application of the numerical model to simple rack structures. [less ▲]

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