Study of behavior of cardiac pacemaker batteries capacity in different situations of electro-electronic variations

The research analyzes issues related to events that originate the behavior of a pacemaker battery in certain electro-electronic variations. Based on idea that pacemaker has the purpose of supporting the heart rate with electrical stimuli, the existence of errors in equipment's battery can lead to reduced autonomy and restricted failures that cause it to malfunction. The research process is based on bibliographic reviews and objective is to investigate cause of failure and explain in a technical way how this error can be minimized in order to reduce likelihood of these undesirable events in the equipment's operation.</jats:p

Development of face shields by rapid prototyping: a socio-sanitary approach in defense of health professionals against Covid-19 in São Paulo, Brazil

Humanity is being affected by the SARS-CoV-2 beta-coronavirus since December 2019. This disease has caused a high mortality rate due to easy contagion in pandemic mundial scale. The transmission occurs from human to human, through respiratory droplets and contact with aerosol-infected surfaces. Anyone carrying the virus that is close (i.e. less than 1 meter) to another person’s eyes, nose or mouth, makes him/her susceptible because of direct contact with the contaminated particles he/she will have (e.g. by touching an infected surface and then touching the eyes, nose or mouth). Due to the risk of exposure to infection, given the forms of contamination by this virus and considering measures to control and protect against infections by health professionals, the Academic Rehabilitation League (LAR), formed by professors and students of the University Center of Americas, produced 400 facial protectors using 3D printing through models composed of polymer filaments, in addition to the acetate films visor and elastics for better fixation, these can be reused and sterilized easily. The masks were distributed free of charge to health professionals in the state of São Paulo, with the purpose of offering greater support, so that they can perform their work safely.</jats:p