Objetivo: Determinar los compuestos fenólicos totales de los vinos tintos que se elaboran en el distrito de Santa María, Huacho. Material y Métodos: Las muestras fueron tomadas a través del método probabilístico y la técnica aleatoria o al azar (botellas de 750 ml) de los lugares de elaboración, fueron trasladadas al laboratorio de Toxicología de los Alimentos de la Facultad de Bromatología y Nutrición para los análisis respectivos. La determinación de antocianicas totales, taninos totales y polifenoles totales se realizó por Espectrofotometría UV-Visible, a una longitud de onda de 540, 550 y 600 nanómetros respectivamente. Resultados: Los vinos tintos que se elaborados en el distrito de Santa María presentan valores promedio bajos de contenidos de antocianinas totales (8,663 mg/l), taninos totales (147,38mg/l) y polifenoles totales (12,86 mg/l), en comparación con los ...

Introduction: The COVID-19 pandemic has had a significant impact worldwide, especially in health, where it is crucial to identify patients at high risk of clinical deterioration early. Objective: This study aimed to design a model based on the support vector machine (SVM) algorithm, optimizing its parameters to classify patients with suspected COVID-19. Methodology: One thousand patient records from two health establishments in Peru were used. After applying data preprocessing and variable engineering, the sample was reduced to 700 records. The construction of the model followed a machine learning methodology, using the linear, polynomial, sigmoid, and radial kernel functions, along with their estimated optimal parameters, to ensure the best performance. Results: The results revealed that the SVM model with the linear and sigmoid kernels presented an accuracy of 95%, surpassing the polyn...

The objective of this investigation was to evaluate the effect of inoculating Azospirillum sp. and two levels of nitrogen on the productive characteristics of hard yellow corn variety  ‘Insignia 800’ under the conditions of Nuevo Imperial, Cañete (central coast of Peru). A randomized complete block design with five treatments and four replications was used in a field experiment using the commercial corn hybrid ‘Insignia 800’. The treatments were two levels of nitrogen (90 and 180 kg N ha-1), plus one or two applications to the foliage of Azospirillum sp. (1.08 x 107 CFU per plant), and a control treatment (without inoculation). Ten agronomic variables related to productive traits were evaluated. Treatment comparison was executed with the Scott Knott test at the 5% significance level using the Infostat program. Inoculation with Azospirillum sp. did not significantly affect the g...