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See detailTraitement différencié des élèves en éducation physique. Solutions proposées par des enseignants en réponse à diverses situations
Cloes, Marc ULg; Demblon, Sarah; Pirottin, Véronique et al

in Carlier Ghislain, Renard, Jean-Pierre (Ed.) Actes du colloque AFRAPS-EDPM "Identifier les effets de l'intervention en motricité humaine" (1999)

Tout apprenant présente des caractéristiques cognitives, affectives, physiques et sociales qui en font une personne unique. Dans l'enseignement en classe comme en éducation physique, les particularités ... [more ▼]

Tout apprenant présente des caractéristiques cognitives, affectives, physiques et sociales qui en font une personne unique. Dans l'enseignement en classe comme en éducation physique, les particularités des apprenants dans chacun de ces domaines se combinent et influencent le processus éducatif et son efficacité. En effet, elles constituent autant d'agents médiateurs entre l'action du professeur et son apport aux élèves. Chacun étant sensible à des stimuli personnels, il apparaît indispensable que les enseignants identifient et tiennent compte des différences interindividuelles de leurs élèves. Les programmes de cours et les lignes directrices des institutions éducatives mettent l'accent sur cette nécessité. Il convient dès lors de déterminer quelles sont les démarches individualisées, utilisées et exploitées par les praticiens. Elles exigent une meilleure compréhension des stratégies mises en oeuvre et visent, à terme, l'exploitation des résultats dans les formations professionnelles initiales et continuées. ... [less ▲]

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See detailL’ostéoporose chez la personne âgée
Reginster, Jean-Yves ULg; Taquet, AN; Fraikin, G

in Medi-Sphere (1999), 103

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See detailWhole-body positron emission tomography using 18F-fluorodeoxyglucose for posttreatment evaluation in Hodgkin's disease and non-Hodgkin's lymphoma has higher diagnostic and prognostic value than classical computed tomography scan imaging.
Jerusalem, Guy ULg; Beguin, Yves ULg; Fassotte, Marie-France ULg et al

in Blood (1999), 94(2), 429-33

A residual mass after treatment of lymphoma is a clinical challenge, because it may represent vital tumor as well as tissue fibrosis. Metabolic imaging by 18F-fluorodeoxyglucose (18F-FDG) positron ... [more ▼]

A residual mass after treatment of lymphoma is a clinical challenge, because it may represent vital tumor as well as tissue fibrosis. Metabolic imaging by 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography (PET) offers the advantage of functional tissue characterization that is largely independent of morphologic criteria. We compared 18F-FDG PET to computed tomography (CT) in the posttreatment evaluation of 54 patients with Hodgkin's disease (HD) or intermediate/high-grade non-Hodgkin's lymphoma (NHL). Residual masses on CT were observed in 13 of 19 patients with HD and 11 of 35 patients with NHL. Five of 24 patients with residual masses on CT versus 1 of 30 patients without residual masses presented a positive 18F-FDG PET study. Relapse occurred in all 6 patients (100%) with a positive 18F-FDG PET, 5 of 19 patients (26%) with residual masses on CT but negative 18F-FDG PET, and 3 of 29 patients (10%) with negative CT scan and 18F-FDG PET studies (P </=.0001). We observed a higher relapse and death rate in patients with residual masses at CT compared with patients without residual masses at CT (progression-free survival at 1 year: 62 +/- 10 v 88 +/- 7%, P =. 0045; overall survival at 1 year: 77 +/- 5 v 95 +/- 5%, P =.0038). A positive 18F-FDG PET study was even more consistently associated with poorer survival: compared with patients with a negative 18F-FDG PET study, the 1-year progression-free survival was 0% versus 86% +/- 5% (P <.0001) and the 1-year overall survival was 50% +/- 20% versus 92% +/- 4% (P <.0001). The detection of vital tumor by 18F-FDG PET after the end of treatment has a higher predictive value for relapse than classical CT scan imaging (positive predictive value: 100% v 42%). This could help identify patients requiring intensification immediately after completion of chemotherapy. However, 18F-FDG PET mainly predicts for early progression but cannot exclude the presence of minimal residual disease, possibly leading to a later relapse. [less ▲]

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See detailRisedronate produces dose-dependent increases in bone mineral density in postmenopausal women with low bone mass
Fogelman, I; Ribot, C; Smith, R et al

in Calcified Tissue International (1999), 64(S1), 69

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See detailStructure of high temperature fluid selenium
Bichara, C.; Raty, Jean-Yves ULg; Gaspard, Jean-Pierre ULg

in Journal of Non-Crystalline Solids (1999), 250-252

Monte Carlo simulations based on a semi empirical tight binding model including dispersion forces were performed to study liquid selenium at temperatures between 600 and 2000 K. The atomic structures ... [more ▼]

Monte Carlo simulations based on a semi empirical tight binding model including dispersion forces were performed to study liquid selenium at temperatures between 600 and 2000 K. The atomic structures obtained are in agreement with the X-ray scattering and extended X-ray absorption fine structure (EXAFS) data in a range of temperatures and densities. A correlation between the conductivity of high temperature fluid selenium and the degree of branching and breaking of the selenium chains is observed [less ▲]

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See detailFourfold basal plane anisotropy of the nonlocal magnetization of YNi2B2C
Civale, L.; Silhanek, Alejandro ULg; Thompson, J. R. et al

in Physical Review Letters (1999), 83(19), 3920-3923

Studies of single crystal YNi2B2C have revealed a fourfold anisotropy of the equilibrium maenetization in the square crystallographic basal plane. This pi/2 periodicity occurs deep in the superconductive ... [more ▼]

Studies of single crystal YNi2B2C have revealed a fourfold anisotropy of the equilibrium maenetization in the square crystallographic basal plane. This pi/2 periodicity occurs deep in the superconductive mixed state. In this crystal symmetry, an ordinary superconductive mass anisotropy (as in usual London theory) allows only a constant, isotropic response. In contrast, the experimental results are well described by generalized London theory incorporating nonlocal electrodynamics, as needed for this clean, intermediate-kappa superconductor. [less ▲]

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See detailDirect costs of hip fractures in patients over 60 years of age in Belgium.
Reginster, Jean-Yves ULg; Gillet, Philippe ULg; Ben Sedrine, Wafa ULg et al

in PharmacoEconomics (1999), 15(5), 507-514

OBJECTIVE: Osteoporosis-related costs are now considered a major burden for health authorities in most developed countries. An accurate and exhaustive evaluation of these costs would be a major ... [more ▼]

OBJECTIVE: Osteoporosis-related costs are now considered a major burden for health authorities in most developed countries. An accurate and exhaustive evaluation of these costs would be a major contribution to health economic studies evaluating the efficiency of screening and prevention strategies. Osteoporosis is the most frequent underlying cause of femoral neck fractures in the elderly; these fractures weigh heavily on healthcare budgets. However, in Belgium, very few data on the financial burden of hip fractures are available and no updated estimates have been made. The goal of this paper is to estimate the direct medical expenditures associated with hip fractures in Belgium in 1996. DESIGN AND SETTING: This 1-year population-based cross-sectional study is conducted from the social security perspective. The target population in this study are men and women aged 60 years and over. PATIENTS AND PARTICIPANTS: We selected patients who had been hospitalised for a hip fracture during the year 1996 who were also affiliated with a registered social security organisation (covering 25% of the Belgian population). The sample constituted 2374 patients. INTERVENTIONS: For each of these patients, we collected an exhaustive and detailed list of healthcare resource use as well as nursing home admissions following the hip fracture event. Cost items investigated in the analysis were inpatient hospital costs and outpatient costs. Mean annual costs per case recorded in the sample were then extrapolated to the whole country on the basis of an exhaustive list of diagnoses having lead to all countrywide hospitalisations (1,700,000 hospital stays/year). MAIN OUTCOME MEASURES AND RESULTS: The mean hospital inpatient costs for hip fracture were evaluated at 332,148 Belgian francs (BeF) [$US8977] per case and BeF4,367,746,200 ($US118,047,194) for the whole country (10 million inhabitants). Patients with a hip fracture experienced an annual BeF27,825 ($US752) extra outpatient cost during the year following this fracture event, after correcting for costs related to additional comorbidity already present before the hip fracture. Finally, after a proximal femoral neck fracture, the rate of nursing home admission was higher, both for men and women at any age compared with age- and gender-matched population. CONCLUSIONS: With a total cost (acute hospital and outpatient costs) of BeF4,667,894,950 ($US126,159,323) per year in Belgium, proximal femoral neck fracture should be considered a major health economic problem and appropriate measures to prevent this disease should be rapidly undertaken. [less ▲]

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See detailAlveolar clearance in horses with chronic obstructive pulmonary disease
Votion, Dominique ULg; Vandenput, Sandrina ULg; Duvivier, D. H. et al

in American Journal of Veterinary Research (1999), 60

OBJECTIVE: To assess sensitivity of scintigraphic alveolar clearance rate as an indicator of alveolar epithelium damage in horses. ANIMALS: 5 healthy horses (group A) and 5 with chronic obstructive ... [more ▼]

OBJECTIVE: To assess sensitivity of scintigraphic alveolar clearance rate as an indicator of alveolar epithelium damage in horses. ANIMALS: 5 healthy horses (group A) and 5 with chronic obstructive pulmonary disease (COPD; group B). PROCEDURE: Horses underwent clearance rate (k [%/min]) determination. Clearance rate of group-B horses was determined after remission of the disease following 2 months at pasture (remission 1), stabling in a controlled environment (remission 2), and during crisis induced by exposure to moldy hay and straw. Methacholine challenge test was performed at each investigation period to determine nonspecific pulmonary airway hyperresponsiveness. Pulmonary function tests (PFT) also were performed, and cell populations in bronchoalveolar lavage (BAL) fluid were determined on another occasion. RESULTS: Group-B horses had significantly faster mean clearance rate during crisis (k = 4.30+/-0.95%/min), compared with that for remission 1(k = 1.98+/-0.55%/min), which did not differ from the rate in group-A horses (k = 1.95+/-0.33%/min). Despite lack of clinical signs of COPD during remission when stabled in a controlled environment, an intermediate value was found (k = 3.20+/-0.72%/min). CONCLUSIONS: This technique allowed grading of lung damage induced by COPD, whereas use of PFT and determination of BAL fluid cell populations failed to differentiate between remission 1 and remission 2. CLINICAL RELEVANCE: Determination of alveolar clearance rate by use of scintigraphy is a sensitive indicator of lung damage. A modified clearance rate was found despite the lack of clinical and functional changes [less ▲]

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See detailRisedronate reduces hip fractures in patients with low femoral neck bone mineral density
Miller, P; Roux, C; McClung, M et al

in Arthritis and Rheumatism (1999), 42(S1), 287

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See detailPerturbative evolution and Regge behaviour
Cudell, Jean-René ULg; Donnachie, A.; Landshoff, P. V.

in Physics Letters B (1999), 448

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See detailInterest of a simple pre-screening test for optimazing the cost/benefit value of bone densitometry
Ben Sedrine, Wafa ULg; Broers, P; Brands, G et al

in Arthritis and Rheumatism (1999), 42(S1), 289

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See detailSafety of strontium ranelate in prevention of postmenopausal bone loss - a double-blind, prospective, placebo-controlled study
Reginster, Jean-Yves ULg; Roux, C; Jupsin, I et al

in Journal of Bone and Mineral Research (1999), 14(S1), 412

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See detailAnomalous behavior of the irreversible magnetization and time relaxation in YBa(2)Cu(3)O(7) single crystals with splayed tracks
Silhanek, Alejandro ULg; Niebieskikwiat, D.; Civale, L. et al

in Physical Review. B : Condensed Matter (1999), 60(18), 13189-13195

We have studied the angular dependence of the irreversible magnetization and its time relaxation in YBa(2)Cu(3)O(7) Single crystals with one or two families of columnar defects inclined with respect to ... [more ▼]

We have studied the angular dependence of the irreversible magnetization and its time relaxation in YBa(2)Cu(3)O(7) Single crystals with one or two families of columnar defects inclined with respect to the c axis. At high magnetic fields, the magnetization shows the usual maximum centered at the mean tracks' orientation and an associated minimum in the normalized relaxation rate. In contrast, at low fields we observe an anomalous local minimum in the magnetization and a maximum in the relaxation rate. We present a model to explain this anomaly based on the slowing down of the creep processes arising from the increase of the vortex-vortex interactions as the applied field is tilted away from the mean tracks' direction. [S0163-1829(99)11841-1]. [less ▲]

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See detailEvidence for vortex staircases in the whole angular range due to competing correlated pinning mechanisms
Silhanek, Alejandro ULg; Civale, L.; Candia, S. et al

in Physical Review. B : Condensed Matter (1999), 59(21), 13620-13623

We present measurements of the angular dependence of the irreversible magnetization of YBa2Cu3O7 single crystals with columnar defects inclined with respect to the c axis. At high fields a sharp maximum ... [more ▼]

We present measurements of the angular dependence of the irreversible magnetization of YBa2Cu3O7 single crystals with columnar defects inclined with respect to the c axis. At high fields a sharp maximum centered at the tracks direction is observed. At low fields we identify a lock-in phase characterized by an angle-independent pinning strength and observe an angular shift of the peak towards the c axis that originates in the misalignment between vortices and applied field in anisotropic materials. The interplay among columnar defects, twins, and intrinsic pinning by the ab planes generates a variety of staircase structures. We show that correlated pinning dominates for all orientations of the applied field. [S0163-1829(99)09417-5]. [less ▲]

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See detailEffects of nimesulide and indomethacin on cyclooxygenaxse-1 and 2 : a comparative study
De Leval, X; Dogne, JM; Neven, P et al

in Osteoarthritis and Cartilage (1999), 7(SA), 32

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See detailIn vitro induced imbalance between stromelysin and TIMP-1 production by human chondrocytes
Henrotin, Yves ULg; Labasse, A; Crielaard, Jean-Michel ULg et al

in Osteoarthritis and Cartilage (1999), 7(SA), 33

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See detailDu savoir aux saveurs
Stassart, Pierre M ULg

Book published by Ful - Vredeseilanden - Fondation Universitaire Luxembourgeoise - Vredeseilanden (1999)

Le projet livre grand public est l’aboutissement d’un projet de recherche interdisciplinaire de 4 ans, financé par le SSTC . Il veut permettre à un large public d’acteurs (administration, associations ... [more ▼]

Le projet livre grand public est l’aboutissement d’un projet de recherche interdisciplinaire de 4 ans, financé par le SSTC . Il veut permettre à un large public d’acteurs (administration, associations, groupements,…) de s’interroger sur les différentes démarches de qualité. L’interrogation sur la qualité est développée en deux volets : l’un présenté par des scientifiques, l’autre par des acteurs. Dans une première partie les chercheurs d’Arlon (SEED de la FUL), de Leuven (Vredeseilanden-Coopibo) et de Gand (Economie Agricole de la RUG) présentent 6 filières de qualité qu’ils ont étudiées de façon approfondie. La qualité y est abordée comme un processus collectif en construction plutôt que comme une définition donnée. Les exemples de cette dynamique collective illustrent la multiplicité du sens donné au terme qualité. En particulier ils montrent comment chacune des définitions appelle un mode d’organisation, un encadrement et des contraintes spécifiques: pensons simplement à la diversité que recouvrent des produits aussi différents que les produits fermiers, les produits label, les produits en production intégrée, les produits issus de l’agriculture biologique,… Un aspect clef développé à travers ces études de cas est celui de la co-construction de la qualité par les producteurs et les consommateurs. Le panorama brossé par les 6 études de cas belges est enrichi par deux contributions extérieures : les chercheurs de l’INRA (France) nous décrivent « Un exemple à ne pas suivre », tandis que ceux de Wageningen (Pays Bas) nous parlent de l’expérience originale des céréaliers du Zeeuwsvlegel. La seconde partie de l’ouvrage offre un forum où différents acteurs s’expriment . Les acteurs de terrain et les associations nous proposent un double récit : l’histoire de l’agriculture biologique et de ses défis puis l’expérience pionnière du réseau « viande sans hormones ». L’administration donne à son tour son point de vue dans deux cartes blanches que rédigent les organismes régionaux ORPAH et VLAM en charge de la promotion des produits agricoles et horticoles. La troisième partie propose un défi : celui d’organiser la confrontation entre acteurs à partir des premières conclusions du groupe de recherche. A cette fin, un panel de producteurs et un panel de consommateurs sont mis sur pied au niveau fédéral avec les représentants des différentes organisations professionnelles et les associations de défense de consommateurs. Ces deux panels sont animés par des journalistes de la presse écrite qui rédigeront ainsi les deux derniers chapitres de ce livre . Nous voulons attacher une importance particulière à la forme et à la diffusion de ce livre. La forme du livre est conçue de telle façon qu’elle soit attrayante et accessible à un public d’acteurs : format A4 , 130 pages dont une trentaine d’illustrations basées avant tout sur la propre production des filières (logos, coupures de journaux, dépliants publicitaires, etc. ) . Le lecteur aura l’occasion d’approfondir certaines questions abordées en se référant à un second livre (Ed L’Harmattan) destiné lui à un public de scientifiques et de spécialistes. La diffusion du livre est organisée à travers des accords de partenariat mis en place avec des institutions actives notamment dans les milieux agricoles. [less ▲]

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