Title:
CYCLICAL BEHAVIOR OF GAS INTERCHANGE BETWEEN LUNGS AND THE MIDDLE ENVIRONMENT

Authors:
Leão L M, Oliveira K, Santos P, Fernandes N, Santos F , Rodrígues A, Ferreira R Sánchez S, Ruiz A I.

Abstract:
In this article a general study is made about the lungs, their characteristics, their main function, detailing some aspects of the respiratory process; the main pulmonary diseases are indicated and how to prevent them. A model is made by means of a system of differential equations that simulates the blood oxygenation process, a qualitative study is made, and conclusions are given regarding the functioning in a healthy person; in the critical case of a pair of pure imaginary eigenvalues, the system is reduced to the normal form to facilitate qualitative study, where the cyclical behavior of the process is seen. Examples are given, the quays show the results obtained in a theoretical way, indicating the validity of the simulation with the real problem.

Keywords:
Lung, qualitative study, cyclical process, breathing

DOI:
http://dx.doi.org/10.52267/IJASER.2021.2301