The new coronavirus (COVID-19) is the latest virus to cause a pandemic, which affected and altered the health of the world’s population. Dentists were no strangers to research on this topic, they reported and publishedthe oral signs that were presented. This research aims to collect and organize information on COVID-19from the stomatological point of view, 25 articles were taken from journals in Scholar Google, Scielo, Pubmed and Elsevier, which were thoroughly reviewed. The article is the result of a search for information on this disease and its clinical manifestations, with emphasis on those that occur in the oral cavity, since the functional and structural changes caused by this disease are primarily visualized in this organ, so that every health professional should consider the absolute necessity of looking at the mouth. Because COVID-19 has a predilection for ACE2 receptors, loca...

El presente trabajo de investigación es un caso que expone los acontecimientos ocurridos en la empresa de estaciones de servicio Primax durante uno de los principales proyectos que se ejecutaron en el año 2016; cómo este parte de la estrategia que se tenía para soportar un crecimiento sostenible en los años futuros. El objetivo está enfocado en diagnosticar este proyecto de implementación del sistema de gestión empresarial haciendo uso del Octógono.

The new coronavirus (COVID-19) is the latest virus to cause a pandemic, which affected and altered the health of the world’s population. Dentists were no strangers to research on this topic, they reported and publishedthe oral signs that were presented. This research aims to collect and organize information on COVID-19from the stomatological point of view, 25 articles were taken from journals in Scholar Google, Scielo, Pubmed and Elsevier, which were thoroughly reviewed. The article is the result of a search for information on this disease and its clinical manifestations, with emphasis on those that occur in the oral cavity, since the functional and structural changes caused by this disease are primarily visualized in this organ, so that every health professional should consider the absolute necessity of looking at the mouth. Because COVID-19 has a predilection for ACE2 receptors, loca...

This work, has allowed us to process and analyze the data obtained about the perception of students in the face of the virtual teaching of physical sciences in the academic system of university training at this stage of pandemic, product of the Covid-19; the system of education under the health emergency was abruptly changed from the modality of classical face-to-face education to a new mode of virtual education. For this work, around 100 students were surveyed basic science faculties such as Physical Sciences and Biological Sciences, as well as the Professional School of Education and the Professional School of Education and the Professional School of Electrical Engineering of the National University of San Marcos, this survey was conducted at the end of the 2020-I semester. A survey form was applied with 16 questions to be answered by students, those questions were regarding: 1. Traini...

The present research has allowed us to determine the X-ray spectrum, for this we have designed a computational program through iterative calculation, samples of attenuation data have been taken and then a previously designed program has been used with a programming language, with the attenuation data. For our case we have worked with the Aluminum and Copper lters. This research has allowed us to: 1.- Find the spectra of X-ray radiation. 2.- Design a program that allows us to nd the X-ray spectra, which we must compare with the X-ray spectra previously determined by Tominaga (1981). 3.- Design a Visual X-ray Dosimetry Program. The expected result is the obtaining of the radiation spectra and the optimization of the X-ray dosimetry, based on the designed program.