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See detailOral temperature as an index of core temperature during heat transients
Mairiaux, Philippe ULg; Sagot, J. C.; Candas, V.

in European Journal of Applied Physiology and Occupational Physiology (1983), 50(3), 331-41

Rectal (Tre), oral (Tor) and oesophageal (Tes) temperatures were measured in five exercising subjects exposed for two hours to five conditions (1) a steady condition (WR) involving a constant work load ... [more ▼]

Rectal (Tre), oral (Tor) and oesophageal (Tes) temperatures were measured in five exercising subjects exposed for two hours to five conditions (1) a steady condition (WR) involving a constant work load (50 W) at a constant air temperature (Ta = 36.5 degrees C); (2) air temperature variations (delta Ta) between 28 degrees C and 45 degrees C and (3) between 23 degrees C and 50 degrees C at constant work load (50 W); (4) and (5) to work load variations (delta W) between 25 W and 75 W at a constant Ta (= 36.5 degrees C). Oral temperature recordings were taken sublingually and were either continuous or discontinuous. When discontinuous, the time needed for Tor to stabilize after the mouth opening was taken into account. The respective reliability of Tor and Tre as estimates of Tes were compared in each condition. Results showed that the resting (Tor - Tes) difference (+ 0.12 degrees C) was barely modified after two hours of exposure, whereas Tre overestimated Tes by 0.2 degrees C to 0.4 degrees C depending on the condition. The Tor variations were highly correlated with Tes variations under steady condition and under air temperature variations. In these conditions, Tor represented the best estimate of Tes. Under work-load variations, Tor was less closely related to Tes than was Tre. It is suggested that the relative inertia of Tor to step changes in exercise intensity could be ascribed to work induced variations in mouth blood flow. [less ▲]

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See detailOral Tiludronate: a new perspective for prevention and treatment of postmenopausal osteoporosis
Reginster, Jean-Yves ULg; Ethgen, D; Barbier, A et al

in Calcified Tissue International (1993), 52(S2), 30

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See detailOral vitamin C attenuates acute ischaemia-reperfusion injury in skeletal muscle.
Kearns, S. R.; Moneley, D.; Murray, P. et al

in Journal of Bone & Joint Surgery, British Volume (2001), 83(8), 1202-6

Ischaemia-reperfusion injury (IRI) is caused by endothelial and subendothelial damage by neutrophil-derived oxidants. Vitamin C is an antioxidant which attenuates endothelial injury after IRI. Our aim was ... [more ▼]

Ischaemia-reperfusion injury (IRI) is caused by endothelial and subendothelial damage by neutrophil-derived oxidants. Vitamin C is an antioxidant which attenuates endothelial injury after IRI. Our aim was to evaluate the effect of oral vitamin C in the prevention of IRI in skeletal muscle. We used a model of cross-clamping (3 hours) and reperfusion (1 hour) of the cremaster muscle in rats. Muscle function was assessed electrophysiologically by electrical field stimulation. Infiltration by neutrophils was determined by the activity of tissue myeloperoxidase (MPO) and tissue oedema by the wet-to-dry ratio. Neutrophil respiratory burst activity was measured in control animals and groups pretreated with vitamin C. IRI significantly decreased muscle function and increased muscle neutrophil MPO activity and muscle oedema. Pretreatment with vitamin C preserved muscle function and reduced tissue oedema and neutrophil infiltration. Neutrophil respiratory burst activity was reduced in the group treated with vitamin C compared with the control group. We conclude that pretreatment with oral vitamin C protects against acute muscle IRI, possibly by attenuating neutrophil respiratory burst activity. [less ▲]

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See detailOral vitamin C reduces the injury to skeletal muscle caused by compartment syndrome.
Kearns, S. R.; Daly, Adrian ULg; Sheehan, K. et al

in Journal of Bone & Joint Surgery, British Volume (2004), 86(6), 906-11

Compartment syndrome is a unique form of ischaemia of skeletal muscle which occurs despite patency of the large vessels. Decompression allows the influx of activated leucocytes which cause further injury ... [more ▼]

Compartment syndrome is a unique form of ischaemia of skeletal muscle which occurs despite patency of the large vessels. Decompression allows the influx of activated leucocytes which cause further injury. Vitamin C is a powerful antioxidant which concentrates preferentially in leucocytes and attenuates reperfusion-induced muscle injury. We have evaluated the use of pretreatment with oral vitamin C in the prevention of injury caused by compartment syndrome in a rat cremasteric muscle model. Acute and delayed effects of pretreatment with vitamin C were assessed at one and 24 hours after decompression of compartment syndrome. Muscle function was assessed electrophysiologically. Vascular, cellular and tissue inflammation was assessed by staining of intercellular adhesion molecule-1 (ICAM-1) and by determination of the activity of myeloperoxidase (MPO) in neutrophils and tissue oedema. Compartment syndrome impaired skeletal muscle function and increased the expression of ICAM-1, activity of MPO and muscle weight increased significantly. Pretreatment with vitamin C preserved muscle function and reduced the expression of ICAM-1, infiltration of the neutrophils and oedema. [less ▲]

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See detailOrales Chondroïtinsulfat bei Arthrose
WANG, François-Charles ULg; Collignon, Laurent; REGINSTER, Jean-Yves ULg et al

in Litera Rheumatologica (1992)

Detailed reference viewed: 15 (1 ULg)
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See detailOralité et comicité
Defays, Jean-Marc ULg

in Actes du XXI Congrès international de linguistique et de philologie romanes (1998)

Detailed reference viewed: 30 (1 ULg)
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See detailORBi : pari tenu ?
Thirion, Paul ULg

Scientific conference (2012, October 19)

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See detailORBi, archive ouverte de l'Université de Liège et PoPuPS, publications en open access de l'Université de Liège
Thirion, Paul ULg

Scientific conference (2010, September 22)

Présentations des initiatives en Open Access de l'Université de Liège (ULg) et de son Réseau des Bibliothèques : - PoPuPS : portail de publications de périodiques scientifique en Open Access - BICTEL/ e ... [more ▼]

Présentations des initiatives en Open Access de l'Université de Liège (ULg) et de son Réseau des Bibliothèques : - PoPuPS : portail de publications de périodiques scientifique en Open Access - BICTEL/ e : répertoire des thèses de doctorat en Open Access - ORBi : open repository and bibliography Présentation des projets, du "mandat ULg" (obligation de dépôt) et des résultats notamment en terme de bénéfices pour les chercheurs [less ▲]

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See detailORBi, the open repository of Ulg and the geographers: first statistics analyzed
Stirbu, Simona ULg

Conference (2010, October 22)

Set up by the University of Liège, ORBi (Open Repository and Bibliography) knew a lightning increase of the deposits since its creation in 2008. The official launch took place on November 26th, 2008 and ... [more ▼]

Set up by the University of Liège, ORBi (Open Repository and Bibliography) knew a lightning increase of the deposits since its creation in 2008. The official launch took place on November 26th, 2008 and after considerable efforts on behalf of the team which manages the tool and researchers who introduce themselves their publications, the contents of the repository managed to reach a value of fifty thousand seven hundred references among which thirty thousand four hundred with full text. Working for the library of Geography of the University of Liège, I found interesting to bend over the "statistics" supplied by ORBi, concerning the number of visualizations and downloads of the references deposited by the geographers of Liège. On base of the statement of various "statistical" data and the analysis of these data, I try to determine if the deposit of the scientific works in ORBi increases - or may increase the visibility of the scientific works of the geographers from Liège. [less ▲]

Detailed reference viewed: 86 (45 ULg)
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See detailORBi@ULg: An exciting self archiving adventure
Thirion, Paul ULg

Scientific conference (2010, October 19)

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See detailORBi@ULg: Are you crazy?
Thirion, Paul ULg

Scientific conference (2012, May 10)

Detailed reference viewed: 86 (32 ULg)
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See detailOrbit Determination for Gaia Spectroscopic Binaries
Jancart, Sylvie ULg; Pourbaix, D.

in O'Flaherty, K.S.; Perryman, M.A.C (Eds.) The Three-Dimensional Universe with Gaia (2005, January 01)

Synthetic radial velocities for a population of 2300+ known spectroscopic binaries are generated according to the present scanning law. The effect of the distribution of the observations and of the noise ... [more ▼]

Synthetic radial velocities for a population of 2300+ known spectroscopic binaries are generated according to the present scanning law. The effect of the distribution of the observations and of the noise on the orbit fitting is investigated. According to our preliminary results short periods, below one day, will be hard to identify among the many aliases, even in the absence of noise. Requirements in terms of computing power for this shell task are estimated in conjunction with the adopted algorithm for the period search part of the orbit reconstruction. These results are for binaries detected in the Radial Velocity Spectrometer only. [less ▲]

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See detailOrbital dynamics characteristics of a QB50 CubeSat performing atmospheric reentry
Asma, C.; Naviaux, J.; Kerschen, Gaëtan ULg et al

in Proceedings of the AIAA Atmospheric Flight Mechanics Conference (2010)

The QB50 mission has the scientific objective to study the temporal and spatial variations of a number of key parameters in the lower thermosphere with a network of 50 CubeSats, each performing identical ... [more ▼]

The QB50 mission has the scientific objective to study the temporal and spatial variations of a number of key parameters in the lower thermosphere with a network of 50 CubeSats, each performing identical in-situ measurements. One of these 50 CubeSats, the von Karman Institute Atmospheric Re-Entry CubeSat, will further be equipped by a thermal protection system and a dedicated sensor pack to study the atmospheric re-entry. This paper is devoted to the orbital dynamics analysis performed for the QB50 mission and the atmospheric re-entry trajectory analysis for a double unit CubeSat. The main focus is on the sensitivity of the results on atmospheric models, drag coefficient and the launch date. Typical atmospheric re-entry trajectories, including the stagnation point heat flux values are calculated using three different methods for three different scenarios. The predicted heat flux values will be used in the preliminary design of the thermal protection system of the VKI atmospheric re-entry CubeSat, which is to be the first CubeSat to be used as an atmospheric re-entry demonstrator. [less ▲]

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See detailAn orbital period of 0.94days for the hot-Jupiter planet WASP-18b
Hellier, Coel; Anderson, D. R.; Cameron, A Collier et al

in Nature (2009), 460

The `hot Jupiters' that abound in lists of known extrasolar planets are thought to have formed far from their host stars, but migrate inwards through interactions with the proto-planetary disk from which ... [more ▼]

The `hot Jupiters' that abound in lists of known extrasolar planets are thought to have formed far from their host stars, but migrate inwards through interactions with the proto-planetary disk from which they were born, or by an alternative mechanism such as planet-planet scattering. The hot Jupiters closest to their parent stars, at orbital distances of only ~0.02 astronomical units, have strong tidal interactions, and systems such as OGLE-TR-56 have been suggested as tests of tidal dissipation theory. Here we report the discovery of planet WASP-18b with an orbital period of 0.94days and a mass of ten Jupiter masses (10M[SUB]Jup[/SUB]), resulting in a tidal interaction an order of magnitude stronger than that of planet OGLE-TR-56b. Under the assumption that the tidal-dissipation parameter Q of the host star is of the order of 10[SUP]6[/SUP], as measured for Solar System bodies and binary stars and as often applied to extrasolar planets, WASP-18b will be spiralling inwards on a timescale less than a thousandth that of the lifetime of its host star. Therefore either WASP-18 is in a rare, exceptionally short-lived state, or the tidal dissipation in this system (and possibly other hot-Jupiter systems) must be much weaker than in the Solar System. [less ▲]

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See detailOrbital rendez-vous using differential drag in the QB50 constellation
Dell'Elce, Lamberto ULg; Kerschen, Gaëtan ULg

in Proceedings of the AIAA/AAS Astrodynamics Specialist Conference (2012)

Detailed reference viewed: 27 (11 ULg)