ABSTRACT
The first documented cases of Coronavirus disease of 2019 (COVID-19) in Wuhan city (Hubei province, China) were caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), studies mention viral transmission is more common in indoor and poorly ventilated environments compared to outdoor environments or environments with abundant airflow. In this context, this research aimed to estimate, through a mathematical model by a Box-Behnken design, the time and occupancy required in a physical space to reach CO2 levels that exceed the risk level established as a safer condition of 700 ppm for SARS-CoV-2 transmission. According to the proposed mathematical model, it is possible to predict safe conditions. With this, it was found that natural ventilation is the best option to reduce CO2 concentration, considering the occupancy/m3 and time, allowing a constant airflow;the use of air conditioners to control the temperature in rooms without natural ventilation is suggested;notwithstanding, these types of equipment are not designed to reduce CO2 concentration. Thus, their use in rooms with open windows and doors leads to a shorter equipment lifetime, for this reason, its operation in special conditions, such as in rooms without natural ventilation should be considered
ABSTRACT
Abstract: This document is a paper of multidisciplinary academic opinion of 27 professors and researchers of the Autonomous University of Nayarit, Mexico. In the manuscript, the pandemic of the COVID-19 disease is approached from different perspectives, with the aim to approach this great problem that has paralyzed humanity in the beginning of the year 2020 in an interdisciplinary form (thus many of the research problems should be approached), on the other hand, with the aim to prove all the academic potential that Mexican public universities hold to respond to society. Professors of history, biology, medicine, biomedicine, nutrition, social sciences, law, psychology, economy, tourism, political sciences, education, communication media, engineering, technological innovation, and intellectual property take part in this paper. This document represents a groundbreaking exercise in the Autonomous University of Nayarit and performing multidisciplinary work is, perhaps, one of the major lesson and message that the pandemic of COVID-19 will leave us.