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Building and testing a micro-hydro turbine - Bok av André Léolein Tsoungui Foé - Häftad

The brain drain from Africa to the developed world is a major drain on any economy. Access to energy in Africa, and more specifically in Cameroon, is a key factor in the development of agricultural industries. It is in this context that we conducted our research into the manufacture of a micro-hydro turbine. The preliminary design showed that the diameter of the impeller is 263 mm, that of a trough is 50 mm and that of the injector is 20 mm. The inertia mass of the impeller is 0.0021 Kg.m2. The torque..

Hydro-agricultural development, case of SITIBIRLI - Bok av Wasbahounsa Bouba - Häftad

The water deficit and the practice of agriculture is one of the challenges for many of our African villages. It is thus, with the aim of increasing the production of the farmers of the commune of Dargala Arrondissement of the Far North in Cameroon, case was made these studies. Under an arid soil in dry season and an acceptable rainfall in rainy season, we thought about the method to keep the excess rainfall received during the rainy season. In order to accompany our farmer parents during the period..

Northern Sahara hydro-system, water quality and ichthyofauna - Bok av Islam Aberkane - Häftad

This study focuses on the physico-chemical characterization and organic pollution parameter of water, in six natural wetlands of the vast region of the northern Sahara: Lake Temacie, Lake Megarine and Oued Still, Oued Djedi, Lake Ayata, Oued Zemar (Biskra). The surveys conducted between October 2016 and Mais 2017, showed that the majority of sites are slightly turbid, brackish or salty with a low conductivity has strong depending on salinity, and a pH moderately alkaline. The concentrations of the..

Hydro-agricultural developments - Diagnosis and evaluation in Benin - Bok av Alice Mahougnon Sakou - Häftad

Mapping of hydro-morphological evolution and risk zones - Bok av Salsebil Bel Hadj Ali - Häftad

The issue of natural hazards in general and Floods in particular is a topic of current interest that marks a memorable action in the world and specifically in Tunisia, especially in view of the last major floods of the Medjerda. Indeed, the management of this risk becomes more and more a necessity that must include all actors and all possible means available. In this work, has been exposed the mapping of flood areas of the middle valley of the Medjerda by means of the combination of different complementary..

Evaluation of water management performance in 5 Niger perimeters - Bok av Ahmed Abdou Moulaye - Häftad

This document presents the diagnostic analysis of water management in the hydro-agricultural schemes of Saga, Ndounga 2, Namardé Goungou, Djambala and Lata under ONAHA supervision. Several water management experiences have been tested in Niger, namely i) Traditional water management within the framework of ONAHA's advisory support through the supervisory staff (Perimeter Director, Agricultural Technical Advisors, Organisational Advisors), ii) Support for water management through the support of a..

Information on the performance of Nile Tilapia in Senegal - Bok av Abdoulaye Niane - Häftad

The research topic is part of the \Valorisation du potentiel écologique et hydro-agricole de la vallée du fleuve Sénégal dans le département de Dagana par l'aquaculture intensive d'Oreochromis niloticus\ programme, signed between the University of Liège in Belgium and the Cheikh Anta Diop University in Dakar, and is in its final year of implementation after 5 years of existence from 2006-2011. Most of the activities have been carried out locally, at the CSS experimental station, at the target..

Analysis of rice yield variability in Niger - Bok av Idrissa Gaya Yacouba - Häftad

The main objective is to determine the factors that lead to differences in yields between rice varieties according to the cultivation practices of producers. The study took place in Niger on the hydro-agricultural developments of the river valley. To achieve this objective, the study was based on a survey phase based on a questionnaire integrated into a smartphone, and another observation phase, based on the installation of plots and sub-plots in the farmers' fields in order to collect information..

Water and Electrolytes - Bok av Jean Le¿Clerc Nicolas - Häftad

The hydro-electrolyte and acid-base balance is of vital importance to maintain correct homeostasis, as it regulates most of the organic functions. It is a complex subject in its therapeutic management due to the varied and not easy formulas designed for the correction of these alterations. The aim of this work is to review the subject in an updated way, showing a novel method that can facilitate the correction of dehydration, but for the first time taking into account the basic daily fluid needs,..