Infrared-based visualization of exhalation flows while wearing protective face masks.

Since the onset of the COVID-19 pandemic, a large number of flow visualization procedures have been proposed to assess the effect of personal protective equipment on respiratory flows. This study suggests infrared thermography as a beneficial visualization technique because it is completely noninvasive and safe and, thus, can be used on live individuals rather than mannequins or lung simulators. Here, we examine the effect of wearing either of three popular face coverings (a surgical mask, a cloth mask, or an N95 respirator with an exhalation valve) on thermal signatures of exhaled airflows near a human face while coughing, talking, or breathing.

[Influence micronization and cooking on changes in inhibitor tripsin of leguminous plants].

Legumes are one of the cheapest protein sources. But most of them contains inhibitors tripsin and needs in long processing. Micronization and cooking of legumes only partly destructs the protease inhibitors.

[The epidemiology, risk factors and present-day aspects of allergic disease prevention in an industrial center].

The article is dedicated to the topical problem of allergic diseases in various population groups of a large industrial region of Moscow suburb, and presents a brief review of present-day epidemiological data on allergic pathology prevalence as well as authors' own data on the morbidity of bronchial asthma, allergic dermatoses, and allergic rhinitis. The paper also contains the results of an analysis of allergic pathology dynamics within 5 to 10 years, and a retrospective analysis of allergic pathology structure in adolescents. The researchers undertook a multifactor analysis of population habitat in the town Mitishchy, based upon ecological and hygienic data concerning atmospheric air and water composition.