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See detailLes cas cliniques, une vision panachee de la medecine: de la simple anecdote a l'enseignement pratique.
Lefebvre, Pierre ULg; Scheen, André ULg

in Revue Médicale de Liège (2009), 64(7-8), 357

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See detailQuel avenir pour les essais de prevention cardiovasculaire?
Scheen, André ULg

in Revue Médicale Suisse (2009), 5(214), 1635-6

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See detailLes religions orientales dans le monde grec et romain: cent ans après Cumont (1906-2006). Bilan historique et historiographique
Bonnet, Corinne; Pirenne-Delforge, Vinciane ULg; Praet, Danny

Book published by Institut historique belge (2009)

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See detailIndexation du debit de filtration glomerulaire par la surface corporelle : mythe et realite
Delanaye, Pierre ULg; Mariat, Christophe; Cavalier, Etienne ULg et al

in Néphrologie & Thérapeutique (2009), 5(7), 614-22

Indexing glomerular filtration rate (GFR) for body surface area (BSA) is often realized without arising any questions. However, physiological basis for such an indexation are very poor. Indeed, indexing ... [more ▼]

Indexing glomerular filtration rate (GFR) for body surface area (BSA) is often realized without arising any questions. However, physiological basis for such an indexation are very poor. Indeed, indexing GFR for BSA to avoid variation due to differences in body size necessarily implies that GFR is a linear function of BSA and that the intercept of this linear function is zero. Moreover, when GFR is indexed for BSA, the relation indexed GFR-BSA must completely disappear. These physiological prerequisites are not found for BSA indexation. We will review the history of this indexation and will underline errors and defaults. Different equations to estimate BSA exist and will be discussed. The choice of "1.73m(2)" will be also criticized. Moreover, indexing GFR for BSA has little impact on GFR results in "normal" body size population. Nevertheless, this indexation will have strong consequences in very lean (such as anorexia) and in obese patients. We will discuss possible alternatives proposed to substitute for BSA indexation. [less ▲]

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See detailAchromatization of solar concentrator thanks to diffractive optics
Languy, Fabian ULg; Lenaerts, Cedric ULg; Loicq, Jerôme ULg et al

Conference (2009)

Refractive solar concentrators suffer from important chromatic aberration. To enhance solar cell performance and increase the concentrating ratio, we propose an hybrid (diffractive/refractive) lens which ... [more ▼]

Refractive solar concentrators suffer from important chromatic aberration. To enhance solar cell performance and increase the concentrating ratio, we propose an hybrid (diffractive/refractive) lens which allows a more uniform flux density and an achromatized (in the sense of achromatic doublet) illumination of the cell. To solve the problem of high diffraction efficiency, we turn to multilayer diffractive lenses to have broadband high diffraction efficiency optimized on solar spectrum. Rigorous coupled wave analysis simulations were performed in order to check the validity of scalar theory, they led to a new order of magnitude for the ratio period/wavelength which has been found to be around 100 in place of 10. [less ▲]

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See detailSeed nutrient content and nutritional status of Posidonia oceanica seedlings in the northwestern Mediterranean Sea
Balestri, Elena; Gobert, Sylvie ULg; Lepoint, Gilles ULg et al

in Marine Ecology. Progress Series (2009), 388

Successful seedling establishment is rare in Posidonia oceanica. The first year after germination is likely to be the most critical phase in the recruitment process, but little is still known on the ... [more ▼]

Successful seedling establishment is rare in Posidonia oceanica. The first year after germination is likely to be the most critical phase in the recruitment process, but little is still known on the factors affecting seedling survival. Mature fruits of P. oceanica released from a meadow of the north-western Mediterranean were deposited by currents on the adjacent beach in May 2004. In May and December 2005, some seedlings established in the previous summer were uprooted by storms and deposited on the beach. This material provided the opportunity to examine seed mass and nutrient content, and the nutritional status of seedlings. Our findings support the hypothesis that growth limitation may be an important cause of mortality for seedlings during the first year of establishment in poor-nutrient sites. [less ▲]

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See detailAn Ambiguous "Freedom Song": Mind-Style in Chimamanda Ngozi Adichie's Purple Hibiscus
Tunca, Daria ULg

in Postcolonial Text (2009), 5(1), 1-18

This article attempts a stylistic analysis of Purple Hibiscus (2003), the first novel by Nigerian writer Chimamanda Ngozi Adichie. Using Roger Fowler's concept of "mind-style" and Halliday and Matthiessen ... [more ▼]

This article attempts a stylistic analysis of Purple Hibiscus (2003), the first novel by Nigerian writer Chimamanda Ngozi Adichie. Using Roger Fowler's concept of "mind-style" and Halliday and Matthiessen's functional grammar, the essay examines the language of the book's first-person narrator, a fifteen-year-old girl whose father is a violent Catholic extremist. It is argued that the unveiling of linguistic patterns in her account leads to a deeper understanding of the concepts of freedom and tyranny in the novel. Thus, while the narrator's deceptively simple style initially conceals her prejudices, it gradually grows into a more straightforward type of language as the character liberates herself from her father's authoritarian grip. [less ▲]

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See detailVitamin B6 deficient plants display increased sensitivity to high light and photo-oxidative stress
Havaux, Michel; Ksas, Brigitte; Szewczyk, Agnieszka et al

in BMC Plant Biology (2009), 9

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See detailEvaluation of power line cable fatigue parameters based on measurements on a laboratory cable test span
Guérard, Suzanne ULg; van dyke, Pierre; Lilien, Jean-Louis ULg

in Lilien, Jean-Louis (Ed.) EIght International symposium on Cable Dynamics, ISCD 2009 (2009)

The present paper describes experiments carried out on IREQ laboratory cable test bench. Test span arrangement is a 63.15m cable span with termination ends designed so as to minimize energy dissipation. A ... [more ▼]

The present paper describes experiments carried out on IREQ laboratory cable test bench. Test span arrangement is a 63.15m cable span with termination ends designed so as to minimize energy dissipation. A shaker provides a vertical alternating force to the conductor. During the experiments, a maximum of information on mode shape is collected: location of nodes, antinode amplitude of vibration, relative displacement at 44.5, 89, and 178mm from the last point of contact with the metallic clamp. Several configurations are studied: span equipped with an homogeneous steel cable, span equipped with an ACSR Crow conductor, sometimes in combination with other equipments such as a vibration damper or a local mass, to investigate how the presence of such devices impacts conductor vibrations. It results from these experiments an interesting comparison of two widely used fatigue indicators, the relative displacement Yb 2 (also called “bending amplitude”) and fymax (the product of antinode amplitude of vibration by frequency). Also, collected data gives indirect information on conductor variable bending stiffness. [less ▲]

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See detailVIBRATIONS OF A SHORT SPAN, COMPARISON BETWEEN MODELIZATION AND MEASUREMENTS PERFORMED ON A LABORATORY TEST SPAN
Guérard, Suzanne ULg; Lilien, Jean-Louis ULg; Van Dyke, Pierre

in Lilien, Jean-Louis (Ed.) EIght International symposium on Cable Dynamics, ISCD 2009 (2009)

In the first part of the present paper, experiments carried out on IREQ laboratory cable test bench were described. One of the objectives of these experiments was to collect all the required data to ... [more ▼]

In the first part of the present paper, experiments carried out on IREQ laboratory cable test bench were described. One of the objectives of these experiments was to collect all the required data to validate the modelization of this cable test bench vibrating at its eigen frequencies. Conductor excitation was performed by a vibration shaker. In the present paper, the first modelization results are presented. The model used is a beam element model, with an average value of conductor bending stiffness. For certain of the simulations, some material damping was introduced through the use of a visco-elastic material. The vibration shaker is modelled by a harmonic force of adequate amplitude and location. The results obtained with this model put in evidence the impact of tension variations on such span length, which makes it difficult to obtain a resonance. Also, computed mode shapes are in good agreement with the reality, and time response of the model with a concentrated mass enabled us to reproduce some interesting observed phenomena. [less ▲]

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See detailDescription of two Enterococcus strains isolated from traditional Peruvian artisanal-produced cheeses with a bacteriocin-like inhibitory activity
Aguilar Galvez, Ana Consuelo ULg; Dubois Dauphin, Robin ULg; Ghalfi, Hakim et al

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2009), 13(3), 349-356

The aim of this work was to isolate and to characterize strains of lactic acid bacteria (LAB) with bacteriocin-like inhibitory activity from 27 traditional cheeses artisanal-produced obtained from ... [more ▼]

The aim of this work was to isolate and to characterize strains of lactic acid bacteria (LAB) with bacteriocin-like inhibitory activity from 27 traditional cheeses artisanal-produced obtained from different Peruvian regions. Twenty Gram+ and catalasenegative strains among 2,277 isolates exhibited bacteriocin-like inhibitory activity against Listeria monocytogenes CWBIB2232 as target strain. No change in inhibitory activity was observed after organic acid neutralization and treatment with catalase of the cell-free supernatant (CFS). The proteinic nature of the antimicrobial activity was confirmed for the twenty LAB strains by proteolytic digestion of the CFS. Two strains, CWBI-B1431 and CWBI-B1430, with the best antimicrobial activity were selected for further researches. These strains were taxonomically identified by phenotypic and genotypic analyses as Enterococcus mundtii (CWBI-B1431) and Enterococcus faecium (CWBI-B1430). The two strains were sensitive to vancomycin (MIC < 2 μg.ml-1) and showed absence of haemolysis. [less ▲]

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See detailC-reactive protein and dialysis access
Cohen, Eric; Krzesinski, Jean-Marie ULg

in Kidney International (2009), 76

Hemodialysis patients have greater morbidity and mortality when they have a catheter rather than an arteriovenous fistula access. Catheter infection plays a significant role in this effect. Inflammation ... [more ▼]

Hemodialysis patients have greater morbidity and mortality when they have a catheter rather than an arteriovenous fistula access. Catheter infection plays a significant role in this effect. Inflammation associated with dialysis catheter use could have an independent adverse effect on patient outcomes. Awareness and further study of the role of inflammation are needed. [less ▲]

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See detailHow to treat hypertension in blacks: review of the evidence
Kola, Luc; Sumaili, Ernest; Krzesinski, Jean-Marie ULg

in Acta Clinica Belgica (2009), 64(6), 466-476

Abstract : Presentation, response to therapy, and clinical outcome differ according to race for patients with hypertension. Black patients have a higher prevalence and earlier onset of hypertension than ... [more ▼]

Abstract : Presentation, response to therapy, and clinical outcome differ according to race for patients with hypertension. Black patients have a higher prevalence and earlier onset of hypertension than other ethnic groups, with poorer prognosis than white patients. Blacks are more likely to be salt-sensitive, and to have a low plasma renin activity than are whites. They are at much greater risk of developing cardiovascular and renal complications. Despite many advances in the understanding and treatment of cardiovascular diseases, black patients continue to have increased morbidity and mortality from the end-organ complications of hypertension. The explanations for these observations remain incompletely understood, but genetic differences, added to socio-economic and environmental factors, have been proposed to explain this disparity. The first therapeutic approach is to decrease salt and increase potassium intakes. Diuretics (thiazides and potassium-sparing agents) and calcium channel blockers constitute the first antihypertensive drug choices. The angiotensin-converting-enzyme inhibitors, the angiotensin II receptor blockers and beta-blockers appear to be less effective in blacks with regard to uncomplicated hypertension, especially in older people, but addition of a small dose of diuretic improves their efficacy. These combinations are preferred among patients whith chronic kidney disease or heart failure. The goal for blood pressure target is the same in blacks as it is in whites, being a blood pressure of less than 140/90 mmHg in uncomplicated hypertension and less than 130/80 mmHg in patients with diabetes mellitus or chronic kidney disease. [less ▲]

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See detailAspects microbiologiques de la production par fermentation solide des endo-β-1,4-xylanases de moisissures : le cas de Penicillium canescens
Assamoi, Allah Antoine; Destain, Jacqueline ULg; Thonart, Philippe ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2009), 13(2), 281-294

Production of xylanases by Penicillium canescens 10-10c is the research object in Walloon Center of Industrial Biology. Previous works used submerged or liquid fermentation. The actual works are oriented ... [more ▼]

Production of xylanases by Penicillium canescens 10-10c is the research object in Walloon Center of Industrial Biology. Previous works used submerged or liquid fermentation. The actual works are oriented more and more towards solid fermentation from agricultural or agro-alimentary residues. In addition to the valorization of these residues, solid-state fermentation reaches an increasingly significant interest in various other fields like the biological breakdown of the solid residues, the bioremediation of the organic pollutants in the grounds and the reduction of the air pollution by the biofiltration. Xylanase is an industrial enzyme used in general in extraction and clarification processes. P. canescens can produce an activity of it, particularly in its balanced forms of xylanases, beta-xylosidase and arabinosidase, and not contaminated by cellulolytic and amylolytic activities. It is a hyper producing strain of xylanase. The production rate is one of the highest in literature (535 U.ml-1 and 9,632 U.g-1 in Erlenmeyer flasks, in submerged and solid state fermentation, respectively). The biobleaching activity of the cellulose pulp by the purified enzyme is higher than a commercial preparation of xylanases from Trichoderma longibrachiatum used industrially. It has a complete hydrolysis degree of 40% (on glucuronoxylan) and 35% (on arabinoxylan) at 55°C and at pH of 5.9. These characteristics lead to many industrial applications of this enzyme. That is why the optimization of its production by the solid-state fermentation at the laboratory scale in order to define a policy for the industrial transposition later is carried out. This article presents a summary of the scientific literature on this subject. [less ▲]

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See detailDe l’inefficacité des murs
Brunet, Sébastien ULg

Article for general public (2009)

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See detailLes plantes exotiques envahissantes en Belgique ont-elles des impacts?
Saad, Layla ULg; Jacquemart, Anne-Laure; Cawoy, Valérie et al

in Parcs & Réserves (2009), 64(4), 10-16

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See detailÉvolution des traits d’histoire de vie lors des invasions végétales
Monty, Arnaud ULg; Mahy, Grégory ULg

in Biotechnologie, Agronomie, Société et Environnement = Biotechnology, Agronomy, Society and Environment [=BASE] (2009), 13(3), 449-458

Les invasions par les plantes, malgré les problèmes qu’elles engendrent, sont des opportunités d’étude des phénomènes évolutifs rapides. Dans cet article sont présentés les principaux changements ... [more ▼]

Les invasions par les plantes, malgré les problèmes qu’elles engendrent, sont des opportunités d’étude des phénomènes évolutifs rapides. Dans cet article sont présentés les principaux changements évolutifs d’histoire de vie accompagnant les invasions végétales. Ceux-ci peuvent avoir lieu lors des différentes phases de l’invasion que sont l’introduction, la naturalisation et l’expansion proprement dite. Leur étude s’articule généralement en deux approches : les comparaisons entre populations de l’aire d’indigénat et de l’aire d’invasion d’une part, et d’autre part, les études de la différenciation au sein de l’aire d’invasion. [less ▲]

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See detailPour une nouvelle philologie numérique : réflexions sur la relation texte(s) - document(s)
Polis, Stéphane ULg; Stasse, Bauduin ULg

in MethIS : Méthodes et Interdisciplinarité en Sciences Humaines (2009), 2

Deux axes ont été privilégiés dans le développement des bases de données textuelles qui, depuis l’avènement de la micro-informatique, ont été constituées afin de faciliter et d’enrichir l’étude des ... [more ▼]

Deux axes ont été privilégiés dans le développement des bases de données textuelles qui, depuis l’avènement de la micro-informatique, ont été constituées afin de faciliter et d’enrichir l’étude des documents en langues anciennes. Le premier correspond à l’encodage, dans une version standardisée, de textes reproduisant une édition particulière ; ceux-ci sont aisément interrogeables, mais la dimension documentaire est systématiquement négligée : les informations relatives à la tradition manuscrite et, plus largement, au processus ecdotique, sont absentes. Le second axe, quant à lui, intègre exclusivement la dimension du document. Il demeure quantitativement (à la fois du point de vue du nombre de projets et de la quantité de textes concernés) peu représenté et qualitativement (type de données encodées, moteurs de recherche disponibles, etc.) non satisfaisant. Cette contribution se propose, par la combinaison de ces deux axes, d’envisager les « textes » et les « documents » dans leur complémentarité. En proposant une modélisation de la relation intrinsèquement simple qu’ils entretiennent, elle se veut une première étape du nécessaire processus d’interrogation de nos pratiques en matière de philologie numérique. [less ▲]

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See detailPratiques du document. Entre tradition et renouvellement
Polis, Stéphane ULg; Stasse, Bauduin ULg

in MethIS : Méthodes et Interdisciplinarité en Sciences Humaines (2009), 2

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