Results 31 to 40 of about 4,004,190 (296)

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
doaj   +1 more source

Evaluation of Mask Performances in Filtration and Comfort in Fabric Combinations

Nanomaterials, 2023
A systemic study on improving particulate pollutant filtration efficiency through the combination of conventional fabrics is presented with the objective of finding comfortable, yet effective airway mask materials and products.
Ji Wang, Renhai Zhao, Yintao Zhao, Xin Ning   +3 more
doaj   +1 more source

Distribution of low quality filtering facepiece respirators during the COVID-19 pandemic: an independent analysis of the situation in Switzerland

Swiss Medical Weekly, 2021
BACKGROUND SARS-CoV-2 is a respiratory virus. Transmission occurs by droplets, contact and aerosols. In medical settings, filtering facepiece (FFP) respirators are recommended for use by personnel exposed to aerosol-generating procedures ...
Jean-Romain Delaloye, David Vernez, Guillaume Suarez, Damien de Courten, Walter Zingg, Vincent Perret, César M.J.A. Metzger, Gilles Richner   +7 more
doaj   +1 more source

Dynamical Modelling and Simulation of Waste water Filtration Process by Submerged Membrane Bioreactors [PDF]

, 2009
A mathematical model was developed for the filtration process and the influence of aeration on Submerged Membrane Bioreactors. The dynamics of sludge attachment to and detachment from the membrane, in relation to the filtration and a strong intermittent ...
Zarragoitia-González, Alain, Albasi, Claire, Schetrite, Sylvie, Jáuregui Haza, Ulises Javier, Zarragoitia Gonzalez, Alain   +4 more
core   +1 more source

Respirator filtration efficiency

, 2023
Aerosols are everywhere around us and pose an increasing risk to human health. That is why aerosols and their filtration are the subject of several researches.
Tolnaj, Tomáš
core   +1 more source

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
doaj   +1 more source

Numerical prediction of the properties of filter media and simulation of filtration processes in pleated filters

, 2022
S.657-671Detailed computer simulations are a recent, efficient way to gain valuable insights into filter materials and particle filtration processes. The scales where filtration phenomena can be observed range from the macroscopic regime of flow around a
Cheng, L., Kirsch, R., Becker, J., Wiegmann, A.   +3 more
core   +1 more source

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
doaj   +1 more source

SMARTPHONE-BASED ANALYSIS OF CLOTH MASKS PORES SIZE

Jurnal Neutrino: Jurnal Fisika dan Aplikasinya, 2021
Until now, the world is still facing the spread of the SARS-CoV-2 virus that causes COVID-19. This virus can be transmitted from human to human through droplets, so more vigilance is needed to avoid contracting this virus.
Meri Hamdini, Yuant Tiandho
doaj   +1 more source

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
doaj   +1 more source