Results 21 to 30 of about 167,160 (259)

Numerical Model of Filtration Efficiency Based on Fractal Characteristics of Particulate Matter and Particle Filter

Atmosphere, 2023
Fractal theory was used to characterize particles and particle trapping parameters to accurately predict the particle filtration process inside a gasoline engine particle filter (GPF). The particles were fractal aggregates, and the fractal dimension (Df)
Yiqing Liu, Hao Wang, Haisheng Yu
doaj   +1 more source

Biosynthesis of Silver Nanoparticles Enhanced Antibacterial Silk Face Covering

Journal of Natural Fibers, 2023
Biosynthesis of silver nanoparticles (AgNPs) using plant extracts as reducing agents has recently attracted interest as an environmentally friendly and cost-effective approach.
Phannaphat Phromphen, Udomlak Sukatta, Prapassorn Rugthaworn, Jirachaya Boonyarit, Phitalai Phoophat, Nattadon Rungruangkitkrai, Pawarin Tuntariyanond, Nawarat Chartvivatpornchai, Thanyachol Apipatpapha, Rungsima Chollakup   +9 more
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Performance evaluation of hydrocyclone filter for microirrigation Avaliação do desempenho de filtro hidrociclone para a irrigação localizada

Engenharia Agrícola, 2007
In this study a hydrocyclone filter of 20 cm was selected and its performance was evaluated by studying the variation of discharge, pressure drop, influent concentration, and filtration efficiency with elapsed time of operation.
Damodhara R . Mailapalli, Patricia A. A. Marques, Kochukaleepkal J. Thomas   +2 more
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Towards a Numerical Model of Bacterial Filtration in Fibrous Filters

Chemical and Process Engineering, 2015
A model of bacterial filtration on fibrous filter media is developed. The single fibre efficiency as well as the efficiency of the whole filter - at the onset of the process and the evolution of those quantities - are analysed.
Gac Jakub M., Gradoń Leon
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Analysis of Particulate and Microbiological Filtration Performance of Air Handling Unit Filters in a Low-Energy Office Building over 12 Months

Buildings, 2022
Indoor air quality is an important consideration for the health and well-being of building occupants, and the SARS CoV-2 pandemic highlighted the importance of maintaining proper ventilation in buildings.
Gaëtan Pavard, Aurélie Joubert, Yves Andrès, Pierre Le Cann   +3 more
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Towards green filtration: Thyme-based antibacterial nanofiber media as alternatives to synthetic counterparts

MethodsX
This study presents a comparative strategy for incorporating natural and synthetic antibacterial agents into electrospun nanofiber media for face mask applications, addressing concerns over toxicity and environmental impact.
Zahra Shafiei, Farideh Golbabei, Mohammad Reza Pourmand, Ensieh Masoorian, Mohammad Mehdi Shirmohammadi, Kamal Azam, Vida Shahbazian, Saba Kalantary   +7 more
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Non-Solvent Induced Phase Separation (NIPS) for Fabricating High Filtration Efficiency (FE) Polymeric Membranes for Face Mask and Air Filtration Applications

Membranes, 2022
Protection against airborne viruses has become very relevant since the outbreak of SARS-CoV-2. Nonwoven face masks along with heating, ventilation, and air conditioning (HVAC) filters have been used extensively to reduce infection rates; however, some of
Ebuka A. Ogbuoji, Lauren Stephens, Amber Haycraft, Eric Wooldridge, Isabel C. Escobar   +4 more
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Community Masks - from an Emergency Solution to an Innovation Booster for the Textile Industry

CHIMIA, 2022
The COVID-19 pandemic resulted in shortages of personal protective equipment and medical devices in the initial phase. Agile small and medium-sized enterprises from regional textile industries reacted quickly. They delivered alternative products such as
Till Batt, Gordon Herwig, Simon Annaheim, Pietro Clement, Lea Furrer, Cordula Hirsch, Vincent Varanges, Baris Caglar, Veronique Michaud, Jing Wang, Gilles Richner, Peter Wick, René Rossi   +12 more
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Synthesis and Antiviral Activity of Nanowire Polymers Activated with Ag, Zn, and Cu Nanoclusters

Pharmaceutics
Background/Objectives: Airborne viral diseases pose a health risk, due to which there is a growing interest in developing filter materials capable of capturing fine particles containing virions from the air and that also have a virucidal effect ...
Thomas Thomberg, Hanna Bulgarin, Andres Lust, Jaak Nerut, Tavo Romann, Enn Lust   +5 more
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Impact of ultraviolet radiation on filtering facepiece respirators and SARS-CoV-2 detection

Frontiers in Public Health
IntroductionThe global coronavirus disease (COVID-19) pandemic of 2020 caused by SARS-CoV-2 resulted in a shortage of filtering facepiece respirators (FFRs), such as N95 and KN95 masks.
Khaled Al-Hadyan, Najla Al-Harbi, Sara Bin Judia, Maha Al-Ghamdi, Ibtihaj Alsharif, Layla Alharbi, Maha Al-Mozaini, Belal Moftah, Belal Moftah, Salem Al-Ghamdi, Ghazi Alsbeih, Ghazi Alsbeih   +11 more
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