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ВАЖНОСТЬ СТРЕМЛЕНИЯ К ПРАВИЛЬНОЙ УСТНОЙ РЕЧИ ПРИ ОБУЧЕНИИ ИНОСТРАННОМУ ЯЗЫКУ ... : THE IMPORTANCE OF STRIVING FOR CORRECT ORAL SPEECH IN TEACHING A FOREIGN LANGUAGE ...
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Similarity between person roles in a card sorting experiment ...
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Strategic priorities for the development of sales activities of enterprises ...
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Strategic priorities for the development of sales activities of enterprises ...
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Marketing approach to strategic sales management of enterprises ...
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Marketing approach to strategic sales management of enterprises ...
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Quality and Efficiency of Manual Annotation: Data from the Pre-annotation Bias Experiment (part of the PDT-C 2.0 project)
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A Simple Method to Quantify Outward Leakage of Medical Face Masks and Barrier Face Coverings: Implication for the Overall Filtration Efficiency
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In: International Journal of Environmental Research and Public Health; Volume 19; Issue 6; Pages: 3548 (2022)
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Abstract:
Face masking proved essential to reduce transmission of COVID-19 and other respiratory infections in indoor environments, but standards and literature do not provide simple quantitative methods for quantifying air leakage at the face seal. This study reports an original method to quantify outward leakage and how wearing style impacts on leaks and filtration efficiency. The amount of air leakage was evaluated on four medical masks and four barrier face coverings, exploiting a theoretical model and an instrumented dummy head in a range of airflows between 30 and 160 L/min. The fraction of air leaking at the face seal of the medical masks and barrier face coverings ranged from 43% to 95% of exhaled air at 30 L/min and reduced to 10–85% at 160 L/min. Filter breathability was the main driver affecting both leak fraction and total filtration efficiency that varied from 5% to 53% and from 15% to 84% at 30 and 160 L/min, respectively. Minor changes were related to wearing style, supporting indications on the correct mask use. The fraction of air leaking from medical masks and barrier face coverings during exhalation is relevant and varies according to design and wearing style. The use of highly breathable filter materials reduces air leaks and improve total filtration efficiency.
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Keyword:
air leak; breathability; community masks; COVID-19; filtration efficiency; fit testing; medical face masks; SARS-CoV-2; surgical face masks barrier face coverings
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URL: https://doi.org/10.3390/ijerph19063548
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MTS-Stega: Linguistic Steganography Based on Multi-Time-Step
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In: Entropy; Volume 24; Issue 5; Pages: 585 (2022)
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Factors Associated with School Effectiveness: Detection of High- and Low-Efficiency Schools through Hierarchical Linear Models
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In: Education Sciences; Volume 12; Issue 1; Pages: 59 (2022)
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An Improved Binomial Distribution-Based Trust Management Algorithm for Remote Patient Monitoring in WBANs
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In: Sustainability; Volume 14; Issue 4; Pages: 2141 (2022)
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Using acoustic distance and acoustic absement to quantify lexical competition
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Efficient marking of argument focus: A trade-off between focus particles and word order in Sinhala
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In: Proceedings of the Linguistic Society of America; Vol 7, No 1 (2022): Proceedings of the Linguistic Society of America; 5223 ; 2473-8689 (2022)
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Community diversity determines the evolution of synthetic bacterial communities under artificial selection
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In: https://hal-agrosup-dijon.archives-ouvertes.fr/hal-03378428 ; 2021 (2021)
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Serial recall order of category fluency words: exploring its neural underpinnings
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Serial Recall Order and Semantic Features of Category Fluency Words to Study Semantic Memory in Normal Ageing
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Communicating artificial neural networks develop efficient color-naming systems
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In: ISSN: 0027-8424 ; EISSN: 1091-6490 ; Proceedings of the National Academy of Sciences of the United States of America ; https://hal.inria.fr/hal-03329084 ; Proceedings of the National Academy of Sciences of the United States of America , National Academy of Sciences, 2021, 118 (12), ⟨10.1073/pnas.2016569118⟩ (2021)
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Функционирование инновационно-консультационной инфраструктуры в АПК ... : The functioning of innovation and consulting infrastructure in the agro-industrial complex ...
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Отдельные элементы мониторинга деятельности федеральных органов исполнительной власти ... : Individual Elements of Monitoring the Activities of Federal Executive Bodies ...
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К ВОПРОСУ О ПРИНЦИПЕ ЦЕЛЕСООБРАЗНОСТИ В РОССИЙСКОМ УГОЛОВНОМ СУДОПРОИЗВОДСТВЕ ... : THE PRINCIPLE OF EXPEDIENCY OF RUSSIAN CRIMINAL PROCEEDINGS ...
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