Andrés Barrado

Learn More
AIM To determine prevalence of H pylori infection in symptomatic children in Buenos Aires, Argentina, and to investigate factors associated with H pylori positivity. METHODS A total of 395 children with upper gastrointestinal symptoms referred to the Gastroenterology Unit of the Children Hospital "Sor Maria Ludovica" were evaluated for the presence of H(More)
This paper presents the configuration and control strategy for an input-series- and output-parallel-(ISOP) connected isolated DC/DC converter. The constituent modules are voltage-fed quasi-Z-source inverters with a single-phase isolation transformer and a voltage doubler rectifier. Experimental measurements with common duty cycle in open loop operation mode(More)
The power delivered by a photovoltaic power system depends strongly on the level of sunlight, the cell temperature and the nature of the load supplied, Itis therefore highly unpredictable. This paper presents the improvement of the MPPT algorithm Perturb and Observe (P & O) under rapidly changing climatic conditions. The results of the simulation in(More)