The aim of this study was to evaluate the association between conventional and computerized parameters of seminal quality by flow cytometry of frozen bovine semen. Semen of 10 ejaculates from five bulls was frozen. Total motility (TM), progressive motility (PM), linear velocity (VSL), curvilinear velocity (VCL) and average path velocity (VAP) in thawed semen were evaluated using the SCA® system. Normal morphology (NM), sperm vitality (SV) and functional membrane integrity were assessed by the eosin-nigrosin stain and the hipoosmotic test (HOST). Mitochondrial membrane potential (∆ΨM) and membrane stability were assessed by flow cytometry through the DiOC6(3)/PI and M-540/Yopro-1 dyes, respectively. Pearson correlation coefficients were calculated, and multiple linear regression models were adjusted (p<0.05). Positive correlations between High-ΔΨM and Medium-ΔΨM with different ...

The aim of this study was to evaluate the association between conventional and computerized parameters of seminal quality by flow cytometry of frozen bovine semen. Semen of 10 ejaculates from five bulls was frozen. Total motility (TM), progressive motility (PM), linear velocity (VSL), curvilinear velocity (VCL) and average path velocity (VAP) in thawed semen were evaluated using the SCA® system. Normal morphology (NM), sperm vitality (SV) and functional membrane integrity were assessed by the eosin-nigrosin stain and the hipoosmotic test (HOST). Mitochondrial membrane potential (∆ΨM) and membrane stability were assessed by flow cytometry through the DiOC6(3)/PI and M-540/Yopro-1 dyes, respectively. Pearson correlation coefficients were calculated, and multiple linear regression models were adjusted (p<0.05). Positive correlations between High-ΔΨM and Medium-ΔΨM with different ...

El presente estudio científico tiene como objetivo general determinar la relación que existe entre la Actividad del director y las Dimensiones de la Gestión Escolar en una Institución Educativa de Básica Regular, el cual tiene enfoque Cuantitativo, tipo de investigación no experimental y diseño correlacional transversal. La investigación tuvo lugar en la Institución Educativa N° 80002 “Antonio Torres Araujo” del distrito de Trujillo en el año 2021. La población lo conformaron 48 docentes de los cuales participaron 39 docentes seleccionados probabilísticamente. Se utilizó como técnica la observación y como instrumento el cuestionario, obteniendo resultados según Alfa de Cron Bach de 0,889 para la Actividad del director y para las Dimensiones de la Gestión Escolar ha sido de 0,726. Los resultados muestran la correlación entre la Actividad del director y las Dimension...