Mario Ponce

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The effectiveness of the World Health Organization's (WHO) treatment category II regimen for tuberculosis in 124 patients was compared to that of 1147 patients receiving treatment category I in Lima, Peru following WHO's guidelines. Drug susceptibility test was available for 85% of patients. Prevalence of multi drug resistance and streptomycin resistance(More)
Spatial autocorrelation is problematic for classical hierarchical cluster detection tests commonly used in multi-drug resistant tuberculosis (MDR-TB) analyses as considerable random error can occur. Therefore, when MDRTB clusters are spatially autocorrelated the assumption that the clusters are independently random is invalid. In this research, a product(More)
A 45-year-old male farmer was admitted with a 5-day history of fever, retrosternal chest pain, and mental obtundation. He lived in the highlands of Peru and had been in contact with the skin and viscera of deceased cattle for unknown reasons 8 days before initiation of symptoms. The physical examination showed fever, shock, a painless ulcerative skin lesion(More)
A Pleural mass biopsy was performed showing an invasive thymoma. Computed tomography (CT) scan of the chest performed on admission revealed a left sided pleural mass, anterior mediastinal mass, lymphadenopathy and pericardial effusion. Pleural mass biopsy showed an invasive thymoma. Due to her clinical presentation, a complete work-up was performed(More)
This paper presents the study of quasi-square waveforms in order to avoid the problem of acoustic resonances in lamps of high intensity discharge. The study consists in the analysis of the electric power waveform, mainly, the study of the effect of the power harmonics generated with the quasi square waveform over the arc discharge of the lamp. The incidence(More)