This study aimed to carry out a retrospective study of the cases of neoplasms in the male reproductive tract in dogs that have been diagnosed by histopathology in the laboratory of animal pathology of the Faculty of Veterinary Medicine of the National University of San Marcos (Lima, Peru) during the period 2011-2017. A total of 85 cases of neoplasms were diagnosed in the reproductive system of 1096 cases of canine neoplasms (7.75%). The most frequent were the testicular tumours (43.5%), the most common being the diffuse seminoma.  

This study aimed to carry out a retrospective study of the cases of neoplasms in the male reproductive tract in dogs that have been diagnosed by histopathology in the laboratory of animal pathology of the Faculty of Veterinary Medicine of the National University of San Marcos (Lima, Peru) during the period 2011-2017. A total of 85 cases of neoplasms were diagnosed in the reproductive system of 1096 cases of canine neoplasms (7.75%). The most frequent were the testicular tumours (43.5%), the most common being the diffuse seminoma.  

We report robust polarimetric measurements of mixed-state geometric phases. An all-optical setup was used to generate geometric phases with great versatility, thereby extending the scope of analogous methods used in neutron polarimetry. Our method allows us to explore geometric phases generated by unitarily evolving mixed states. These are realized as partially polarized single-photon states whose degree of polarization and normalized Stokes vector can be fixed independently of one another. The geometric phases correspond to both open and closed trajectories in Poincaré space. By exploiting the gauge invariance of geometric phases we nullify their dynamical part, thereby making the geometric phase coincide with the total (Pancharatnam) phase, which can be directly addressed by employing standard techniques.

The purpose of this research was to determine the prevalence of Fasciola hepatica and its risk factors in schoolchildren of educational institutions of the primary level of three villages in the district of Condebamba, Cajamarca, Peru. A questionnaire was applied to schoolchildren and their parents or guardians to collect information related to risk factors in schoolchildren. It was evaluated 253 faecal samples of schoolchildren between 6 and 12 years old, using the rapid sedimentation technique modified by Lumbreras to diagnose F. hepatica infection. The prevalence of F. hepatica in Condebamba was 5.1%. There were no significant differences in relation to gender or age group. The risk factors associated with the infection were raising cows and defecating outdoors. The prevalence was moderate in Cauday and Ogosgón villages and null in La Merced.

La investigación tuvo como finalidad determinar la prevalencia de Fasciola hepatica y sus factores de riesgo en escolares de instituciones educativas del nivel primario de tres caseríos del distrito de Condebamba, Cajamarca, Perú. Se aplicó un cuestionario a los escolares y a sus padres o apoderados para recolectar información relacionada con los factores de riesgo en los escolares. Se evaluaron 253 muestras fecales de escolares entre 6 y 12 años, mediante la técnica de sedimentación rápida modificada por Lumbreras para diagnóstico de infección por F. hepatica. La prevalencia de F. hepatica en Condebamba fue de 5.1%. No hubo diferencias significativas en relación con el género y grupo de edad. Los factores de riesgo asociados con la infección fueron la crianza de vacas y defecar al aire libre. Las prevalencias fueron moderadas en las localidades de Cauday y Ogosgón y nula ...