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The migratory locust, Locusta migratoria (Linnaeus), is the most widespread locust species. Frequent applications of insecticides have inevitably resulted in environmental pollution and development of resistance in some natural populations of the locust. To find a new and safe alternative to conventional insecticides, experiments were conducted to assess the effect of olive leaf extracts on L. migratoria...
Control strategy for standalone solar pumping system based on induction motor and without DC/DC converter has been widely studied and discussed in the literature. This topology is of great concern due its economic issues, especially when a standard frequency converter (SFCs) with scalar control is used instead of a dedicated PV inverter. This paper proposes an external control module to generate SFCs...
Sensor networks have recently emerged as an important computing platform. These networks necessitate suitable protocol solutions. Researchers, over the recent past have fine tuned MAC protocols for sensor networks and provided techniques to reduce energy consumption, maximize throughput and accurate latency. Some of these goals may be conflicting and may enforce a trade-off. Balanced emphasis of the...
Le pheochromocytome extrasurrenalien est une entite rare. Le diagnostic doit etre evoque devant des signes de pheochromocytome avec absence de tumeur des surrenales. Nous rapportons ici quatre cas de pheochromocytomes ectopiques en precisant leurs particularites cliniques et leur demarche diagnostique.
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