La recherche en pédagogie appliquée au volley-ball

in Cloes, Marc (Ed.) La recherche en volley-ball (1990)

Comme dans les autres disciplines scientifique, il existe en pédagogie du sport plusieurs domaines ou orientations de recherches. Nous avons ainsi classé les études de pédagogie appliquées au volley-ball ... [more ▼]

Comme dans les autres disciplines scientifique, il existe en pédagogie du sport plusieurs domaines ou orientations de recherches. Nous avons ainsi classé les études de pédagogie appliquées au volley-ball en deux grandes catégories: (1) des études centrées sur le développement de méthodes d'enseignement, et (2) les études liées à l'analyse systématique du processus d'entrainement. ... [less ▲]

Evaluation des forces tractrices critiques de la charge caillouteuse : Expériences en flume et observations en rivières naturelles

in Hydrology in Mountainous Regions II, Artificial Reservoirs, Water and Slopes (1990)

Rhétorique, idéologie et décadence

in Citti Pierre (Ed.) Fins de siècle (1990)

Jacques Sternberg, L’Employé

in Textyles : Revue des Lettres Belges de Langue Française (1990), 7

Evelyne Lentzen, Le Livre dans la Communauté française

in Textyles : Revue des Lettres Belges de Langue Française (1990), 7

Health effects of environmental exposure to cadmium: objectives, design and organization of the Cadmibel

in Environmental Health Perspectives (1990), 87

Cadmium is a cumulative environmental pollutant. For the general population mainly exposed by the oral route and through tobacco smoke inhalation, the kidney is the critical organ. Belgium is the ... [more ▼]

Cadmium is a cumulative environmental pollutant. For the general population mainly exposed by the oral route and through tobacco smoke inhalation, the kidney is the critical organ. Belgium is the principal producer of cadmium in Europe, and certain areas of the country are polluted by cadmium mainly because of past emissions from nonferrous industries. Preliminary studies carried out in one polluted area have suggested that environmental pollution might lead to an increased uptake of cadmium by the human body and possibly to health effects. Thus, a large-scale morbidity study has been initiated to assess the validity of this hypothesis. The present paper describes the protocol of this study. Its main objectives are to determine to what extent environmental exposure to cadmium resulting from industrial emissions may lead to accumulation of the metal in the human organism; to establish whether or not environmental exposure may induce renal changes and/or influence blood pressure; and to assess the acceptable internal dose of cadmium for the genral population. The study design takes advantage of the fact that biological indicators of exposure, body burden, and early nephrotoxic effects of cadmium ar available, which increase the likelihood of detecting a cause-effect relationship. [less ▲]

Renal effects of cadmium body burden of the general population

in Lancet (1990), 336

In a cross-sectional population study to assess whether environmental exposure to cadmium associated with renal dysfunction, 1699 subjects aged 20-80 years were studied as a random sample of four areas of ... [more ▼]

In a cross-sectional population study to assess whether environmental exposure to cadmium associated with renal dysfunction, 1699 subjects aged 20-80 years were studied as a random sample of four areas of Belgium with varying degrees of cadmium pollution. After standardisation fo several possible confounding factors, five variables (urinary excretion of retinol-binding protein, N-acetyl-ß-glucosaminidase, ß2-microglobulin, aminoacids, and calcium) were significantly associated with the urinary excretion of cadmium (as a marker of cadmium body burden) suggesting the presence of tubular dysfunction. There was a 10% probablility of values of these variables being abnormal when cadmium excretion exceeded 2-4 µg/24h. Excretion reached also evidence that diabetic patients may be more susceptible to the toxic effect of cadmium on the renal proximal tubule. [less ▲]

Relationship of serum selenium to tumor activity in acute non lymphocytic leukemia (ANLL) and chronic lymohocytic leukemia (CLL)

in Metal Ions in Biology and Medicine (1990)

Quelques aspects structurels de la production de fraises en Belgique en 1986

in Le Fruit Belge (1990), 58(429 - 1er trimestre 1990), 1-16

Cet article traite de la production des fraises et tente à répondre à quelques questions telles que : quels sont les types de production ? Où se situent les régions productrices ? Qui pratique cette ... [more ▼]

Cet article traite de la production des fraises et tente à répondre à quelques questions telles que : quels sont les types de production ? Où se situent les régions productrices ? Qui pratique cette spéculation ? Quelle est la taille des exploitations ? [less ▲]

Vector Data Handling with a GIS Raster-Based

in Proceedings of EGIS'90 (1990), 1

The growing use of remote sensed imagery and D.E.M., for instance, in land planning and environmental studies is in favour of G.I.S. raster-based. Nevertheless, the availability and the selectivity of ... [more ▼]

The growing use of remote sensed imagery and D.E.M., for instance, in land planning and environmental studies is in favour of G.I.S. raster-based. Nevertheless, the availability and the selectivity of vector formated data force their joint processing. This communication deals with techniques allowing simultaneous handling of vector information and raster imagery, according to raster, vector, or hybrid algorithms. The vector to raster technology used by the current display devices makes the implementation of such procedures easier. Exemples of different classes of vector representation are used jointly with remote sensed images to illustrate the items under discussion. [less ▲]