La filière viande bovine wallonne, enjeux et perspectives

(2007)

Filières agro-industrielles et développement : le cas de la viande bovine dans les pays sahéliens

in Revue Canadienne d'Etudes du Développement = Canadian Journal of Development Studies (1989), 10(1), 61-73

The study of the food subsector permits an integrated approach to the problems linked to the development of food production in Third World countries. The author, after defining various concepts related to ... [more ▼]

The study of the food subsector permits an integrated approach to the problems linked to the development of food production in Third World countries. The author, after defining various concepts related to the subsector notion, explains how successful agro-industrial systems can be developed in Third World countries and outlines the various steps in the meat production network of Sahelian countries. Food subsectors, he concludes, create a link between producers and consumers and, as such, are instrumental in ensuring a balance between production, commercialization and markets. [less ▲]

Une fille = un garçon ! Identifier les inégalités de genre à l'école pour mieux les combattre

Book published by L'Harmattan (2010)

présentation des différents résultats du programme de recherche coordonné par la direction Egalité des chances de la Communauté Française de Belgique

Filles et garçons face à l'orientation scientifique : stéréotypes en tout genre

in Gavray, Claire; Adriaenssens, Alexandra (Eds.) Une fille = un garçon ? Identifier les inégalités de genre à l'école pour mieux les combattre (2010)

Film und Medienkompetenz im Unterricht. Methoden und Konzepte für den Deutschkurs. Vom Studientag des BGDV am 24.2.2010, Universität Lüttich

in Rundbrief. Mitteilungsblatt des BGDV (2011), 27

Filmer le social

in Aubenas, Jacqueline (Ed.) Dic Doc. Le dictionnaire du documentaire (1999)

Films minces de TiO2 à larges pores pour applications photovoltaïques et dégradation des polluants

Master's dissertation (2011)

Filologia dei carteggi volgari quattro-cinquecenteschi

in Pasquini, Emilio (Ed.) Studi e problemi di critica testuale. Numero speciale per il 150° anniversario della Commissione per i testi in lingua (2012)

Filtering inertia-gravity waves from the initial conditions of the linear shallow water equations

in Ocean Modelling (2007), 19(3-4), 204-218

A method for filtering inertia-gravity waves from elevation and depth-averaged velocity is described. This filtering scheme is derived from the linear shallow water equations for constant depth and ... [more ▼]

A method for filtering inertia-gravity waves from elevation and depth-averaged velocity is described. This filtering scheme is derived from the linear shallow water equations for constant depth and constant Coriolis frequency. The filtered solution is obtained by retaining only the eigenvectors corresponding to the geostrophic equilibrium and by discarding explicitly the eigenvectors corresponding to the fast moving inertia-gravity waves. An alternative formulation is derived using a variational approach. Both filtering methods are tested numerically for a periodic domain with constant depth and the variational approach is implemented for a closed domain with large topographic variations. The filtering methods significantly reduce the amplitudes of the inertia-gravity waves while preserving the mean flow. The variational method is compared to the Incremental Analysis Update technique and the benefits of the variational filter are presented. (C) 2007 Elsevier Ltd. All rights reserved. [less ▲]

Filtration and digestion responses of an elementally homeostatic consumer to changes in food quality: a predictive model

in Oikos (2005), 111(2), 322-336

In the study of the stoichiometric relationship between autotrophs and herbivores, attention has been largely focused on effects of the encountered mismatch between needs and supplies of an element on ... [more ▼]

In the study of the stoichiometric relationship between autotrophs and herbivores, attention has been largely focused on effects of the encountered mismatch between needs and supplies of an element on herbivore growth and ecosystem processes. Herbivore adaptation to poor food quality has rarely been investigated. This study presents a predictive model of feeding, assimilation, digestion and excretion of Daphnia facing a dietary deficiency in phosphorus. Biochemical compounds in the food were divided into phosphorous and non-phosphorus compounds. It was assumed that Daphnia is able to differently assimilate both types of compounds by regulation of target specific digestive enzymes. Feeding rate was regulated by optimal gut residence time of food particles, and assimilation efficiency by gut residence time and optimal secretion of both classes of gut enzymes. The model predicted the optimal strategy for a consumer facing an elementally imbalanced diet: (1) increase the ingestion rate, and (2) increase the secretion rate of both classes of gut enzymes. It resulted in decreased C and nutrient assimilation efficiencies, increased C feeding costs, and reduced growth rate. Sensitivity analysis showed that these predictions were qualitatively not influenced by parameter values. An alternative model was tested that includes an additive term allowing the direct excretion of C assimilated in excess. Results showed that this strategy is not optimal for the consumer growth rate. In conclusion, the model supports the hypothesis that carbon ingested in excess may generate energy that can be used to obtain more nutrients by increased feeding rate. [less ▲]