Regulations for measures to protect against SARS-CoV-2 transmission vary widely around
the world, with very strict regulations in Germany where respirators (filtering face piece FFP2 …

Protective efficiency of filtering dust respirators depends on the properties of filter materials
from which filters are made and the structure of a half mask frame, which influences how …

Frequent donning and doffing of filtering facepiece respirators (FFRs) can reduce their
effectiveness due to the residual deformation of their elastic head straps. This study …

Atmospheric air, which is a natural resource, significantly affects the health and disease
level of the population [1, 2], as well as the quality of the environment [3, 4]. However, as a …

Background Differences in physiology and breathing patterns between children and adults
lead to disparate responses to aerosols of varying sizes. No standardized method exists for …

요약 공기충전기를 통해 충전되는 공기는 불순물이 없고 순수해야 하므로, 수분, oil, 탄화물
등의 이물질을 제거해주는 필터의 역할이 매우 중요하다. 이러한 필터의 수명은 약 50 h 이며 …

The research is focused on topical issues of determining the safe parameters of pit edges in
the conditions of a reduced protective zone near a critical infrastructure facility. Considering …

To increase the insulating properties of elastomeric half-masks, it is suggested to perforate
the obturator in the area of the nasal bridge, chin and cheeks, which allows for adjustment in …

Sažetak Kako bi se povećala izolacijska svojstva elastomernih polumaski, predlaže se
perforacija brtve u području hrpta nosa, brade i obraza, što omogućuje promjenu njezine …

У результаті аналізу сучасних інноваційних конструкцій засобів індивідуального
захисту органів дихання для забезпечення відповідного терміну захисної дії …