Ahmad Haddad

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The main purpose of this paper is to design a clean and stand-alone power generator for isolated sites using renewable energy sources. The proposed system is able to operate without the need of refueling. The idea is to combine Photovoltaic Panels (PVs) with Fuel Cell (FC) to build an uninterrupted power generator. In presence of solar energy, PVs are used(More)
This paper aims to study the dynamic behavior of the fuel cell by focusing on the cell temperature and the membrane humidity effects. The objective is to build a non-linear dynamic model based on the electrical aspect. We consider most of the phenomena that occur inside the fuel cell by assimilating it to an equivalent electrical circuit that associates(More)
This paper presents an artificial neural network (ANN) model for predication global solar radiation (GSR) for main cities in the UAE namely, Abu Dhabi, Al-Ain and Dubai. Multi-Layer Perceptron (MLP) and Radial Basis Function (RBF) techniques with comprehensive training algorithms, architectures, and different combinations of inputs are used to develop these(More)
BACKGROUND Bronchial hyperresponsiveness and/or bronchospasm are recognized complications of sickle cell disease. OBJECTIVE The aim of this study was to investigate the presence of bronchospasm during painful crises, using simple spirometry in patients with sickle cell disease. METHODS A prospective, non-randomized study was undertaken in patients with(More)
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