Active Versus Passive Flow Control in UVC FILTERs for COVID-19 Containment.

Ultraviolet radiation as a germicide is widely used in the health field and even in domestic hygiene. Here, we propose an improvement in low-cost portable units of filtration for indoor air, which is based on ultraviolet radiation. In the current technology, to carry out an air filtration with a suspension of aerosols in which there is a likely concentration of pathogens, whether viral, bacterial or molds, the air is forced to pass as close as possible to the ionizing radiation source (near field).

The Grief of Relatives of Missing Migrants and Supportive Interventions: A Narrative Review.

This review aims to determine the impact of the disappearance of migrants on their family members, to identify their grief management needs, and to describe interventions carried out to date, exploring reports on the grief of relatives of people who disappear in any context. A search of the literature retrieved 24 publications. It was found that the disappearance produced an impact at individual, family, and community level.