The roles of time of day and sleep quality in modulating glucose regulation: clinical implications.

in Hormone Research (1998), 49(3-4), 191-201

Consistent variations in glucose regulation across the 24-hour cycle are present in normal subjects. These diurnal variations are altered in various states of impaired glucose tolerance (aging, obesity ... [more ▼]

Consistent variations in glucose regulation across the 24-hour cycle are present in normal subjects. These diurnal variations are altered in various states of impaired glucose tolerance (aging, obesity, diabetes). Changes in insulin secretion, clearance and/or action across the day have been demonstrated. Studies in subjects receiving continuous intravenous glucose infusion have shown that major alterations of glucose tolerance occur during sleep and that sleep quality markedly influences glucose utilization. Diurnal variations in glucose tolerance result from the alternation of wake and sleep states as well as from intrinsic effects of circadian rhythmicity. The important roles of physiological variations in levels of counterregulatory hormones which are markedly dependent on sleep (i.e. growth hormone) or circadian rhythmicity (i.e. cortisol) have only begun to be appreciated. The modulatory effects of sleep and circadian rhythmicity on glucose regulation may have important clinical implications for the diagnosis and treatment of abnormalities of carbohydrate metabolism. [less ▲]

Roll forming of Ultra High Strength Steels: progresses in experimental and modelling knowledge

in Proceedings of International Roll Forming Congress 2009 (2009, October)

Roller Compacted Concrete with contaminated recycled aggregates

in Construction & Building Materials (2009), 23

Recycling waste building materials from construction and demolition (C&D) sites is increasingly investigated for economical and environmental reasons. Roller compacted concrete (RCC) is a special dry ... [more ▼]

Recycling waste building materials from construction and demolition (C&D) sites is increasingly investigated for economical and environmental reasons. Roller compacted concrete (RCC) is a special dry concrete mix; laid down and compacted like a soil, it is especially used for the construction of massive structures like dams or large horizontal surfaces like road foundation. In this paper, natural concrete slabs were cured in water, sea water, chloride solutions or sulphate solutions and then crushed to obtain virgin and contaminated (polluted) recycled aggregates. The aim of this research is the total replacement (100% coarse and fine) of natural aggregates (NA) by recycled concrete aggregates (RA) in the composition of a roller compacted concrete. The natural and recycled aggregates are characterised and compared. The mechanical properties and durability performances of concrete with contaminated RA are analysed. The experimental results showed that the polluted RA are much richer in chlorides than in sulphates and are leached if they are soaked in water. Significant differences were observed between the properties of original and new concrete and the results demonstrated the need of taking these contaminations into account. [less ▲]

Rolling and slipping motion of Euler's disk

in Physical Review E (2004), 69(5, Pt 2), 56610

We present an experimental study of the motion of a circular disk spun onto a table. With the help of a high speed video system, the temporal evolution of (i) the inclination angle alpha, (ii) the angular ... [more ▼]

We present an experimental study of the motion of a circular disk spun onto a table. With the help of a high speed video system, the temporal evolution of (i) the inclination angle alpha, (ii) the angular velocity omega, and (iii) the precession rate Omega are studied. The influence of the mass of the disk as well as the friction between the disk and the supporting surface are considered. Both inclination angle and angular velocity are observed to decrease according to a power law. We also show that the precession rate diverges as the motion stops. Measurements are performed very near the collapse as well as on long range times. Times to collapse have been also measured. Results are compared with previous theoretical and experimental works. The major source of energy dissipation is found to be the slipping of the disk on the plane. [less ▲]

Rolls, Hexagons and Squares in Bénard-Marangoni Instability

in Mir, A.; Zrikem, Z. (Eds.) Proceedings of the International Thermal Energy and Environment Congress (ITEEC) 97 (1997)

Rolul mediului academic in dezvoltarea internationala

Conference given outside the academic context (2010)

L'objectif de notre intervention est de montrer en quoi et comment le monde académique peut apporter une réelle plus-value dans la coopération au développement entre deux pays, dans le cas présent, la ... [more ▼]

L'objectif de notre intervention est de montrer en quoi et comment le monde académique peut apporter une réelle plus-value dans la coopération au développement entre deux pays, dans le cas présent, la Roumanie et la République de Moldavie. Notre argument principal est que la recherche universitaire permet aux acteurs de terrain d'avoir un regard critique sur les conséquences inattendues/moins visibles de tout projet de développement. [less ▲]

Romain Gary, compagnon de l'aliénation

Conference (2011, June 09)

Le Roman en prose de Guillaume d’Orange et le milieu bourguignon

in Ott, Muriel (Ed.) L’épopée médiévale et la Bourgogne (2006)

Le Roman en prose de Guillaume d'Orange, t. II. Édition critique

Book published by Champion (2006)

Édition critique de la mise en prose romanesque d’une quinzaine des chansons de geste composant le cycle épique de Guillaume d’Orange, conservée dans deux gros volumes manuscrits. Cet important ensemble ... [more ▼]

Édition critique de la mise en prose romanesque d’une quinzaine des chansons de geste composant le cycle épique de Guillaume d’Orange, conservée dans deux gros volumes manuscrits. Cet important ensemble (plus de 1200 pages dans l’édition) fut composé à la cour de Bourgogne vers 1456 ; il n’avait jamais reçu d’édition complète. Le tome I est paru en 1999 dans la même collection. [less ▲]

Le roman en vers : genre moderne !

in Culture, le magazine culturel de l'Université de Liège (2009)