نتایج جستجو برای: hepa filter test
تعداد نتایج: 926039 فیلتر نتایج به سال:
BACKGROUND Exposure and sensitization to pet allergens are associated with allergic asthma in children. Conflicting data have emerged regarding the potential benefit of air cleaners with respect to a reduction of indoor pet allergens and bronchial hyperresponsiveness (BHR). METHODS In a randomized controlled trial 36 asthmatic children with sensitization to cat and/or dog and significant expo...
Introduction: Nowadays, HEPA filters is used in hospitals, clean rooms, microbiology hoods, ventilation of surgery rooms, and Pharmacy for removing microorganisms and reduce health hazard. The aim of this study is to increase the efficiency of HEPA filters with UVC radiation to reduce the density of airborne microorganisms. Material and Method: The closed–loop chamber was made to evaluate S...
The increased frequency of wildfires in the Western United States has raised public awareness impact wildfire smoke on air quality and human health. Exposure to been linked an risk cancer cardiorespiratory morbidity. Evidence-driven interventions can alleviate adverse health smoke. During wildfires, guidance is based regional data with limited spatiotemporal resolution. Recently, low-cost senso...
Two-component phosphorelay systems are minimally consisted of a sensory protein-histidine kinase (HK) and a response regulator (RR). HK autophosphorylates its conserved histidine residue in response to stimulus from an environment, this phosphate group then is transferred to a conserved aspartic acid residue of an RR, which is generally a transcription factor. HepK is a member of the family of ...
TO THE EDITOR—We read with interest the article by Kanamori et al [1] who reviewed fungal outbreaks linked to construction and renovation of healthcare settings. The authors selected 49 studies that reported cases of fungal outbreaks related to hospital construction, renovation, or demolition. The authors found that construction-related fungal cases seem to be in decline as only 3 published stu...
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