Results 21 to 30 of about 125,695 (262)

Properties analysis of filtration materials with nanofibers addition [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2019
Nanofiber properties, methods of their production, and areas of their application have been presented. Parameters describing filtration materials with nanofibers addition were presented, and analyzed.
Tadeusz Dziubak, Yurii Yendzheiovskyi
doaj   +1 more source

Creating Clean Air Spaces During Wildland Fire Smoke Episodes: Web Summit Summary

open access: yesFrontiers in Public Health, 2021
Effective strategies to reduce indoor air pollutant concentrations during wildfire smoke events are critically needed. Worldwide, communities in areas prone to wildfires may suffer from annual smoke exposure events lasting from days to weeks. In addition,
Gilliane Davison   +6 more
doaj   +1 more source

Self-Supporting Three-Dimensional Electrospun Nanofibrous Membrane for Highly Efficient Air Filtration

open access: yesNanomaterials, 2021
High-performance air filtration was the key to health protection from biological and ultrafine dust pollution. A self-supporting, three-dimensional (3D) nanofibrous membrane with curled pattern was electrospun for the filtration, of which the micro ...
Gaofeng Zheng   +7 more
doaj   +1 more source

The restriction produced by the air filtration system versus the restriction produced by the air filter

open access: yesMATEC Web of Conferences, 2018
The air filtration system for an internal combustion engine comprises the air filter, the filter housing and the intake air duct which conducts the air flow from the vehicle grille to the filter housing. This generates gaso-dynamic resistances to the air
Toma Marius   +2 more
doaj   +1 more source

Empirical modelling of filtration performance for the fibrous air filters with final resistance recommendation

open access: yesResults in Engineering, 2022
A significant challenge in the filtration applications is the high energy consumption across the air filters, especially with the dust cake formation after a certain period of usage.
Jing Ee Yit   +2 more
doaj   +1 more source

Stabilized Electrospun Polyacrylonitrile Fibers for Advancements in Clean Air Technology

open access: yesAtmosphere, 2023
Particulate matter air pollution and volatile organic compounds released into the air from the incomplete combustion of fossil fuels and wildfires creates significant damage to human health and the environment. Advances in air filtration and purification
Ivan P. Beckman   +5 more
doaj   +1 more source

Outdoor PM2.5 air filtration: optimising indoor air quality and energy

open access: yesBuildings & Cities, 2022
Human inhalation exposure to fine particulate matter (PM2.5), including the PM2.5 of outdoor origin, predominantly occurs indoors. To limit outdoor PM2.5 penetration into buildings, ventilation standards often require the filtration of outdoor air with a
Evangelos Belias, Dusan Licina
doaj   +1 more source

Some observations on air filtration

open access: yesAntonie van Leeuwenhoek, 1950
1. A method has been developed for testing the filtration efficiency of some filter materials. For each of the materials investigated — cotton wool, stillite and carbon — a suitable filter has been devised. 2. The filtered air was analyzed as to its germ content with the aid of a set of 3 capillary impingers. 3. The cotton wool filter gave on the whole
Kluyver, A.J. (author)   +1 more
openaire   +4 more sources

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

open access: yesMolecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce   +11 more
wiley   +1 more source

Experimental Study of a PowerCore Filter Bed Operating in a Two-Stage System for Cleaning the Inlet Air of Internal Combustion Engines

open access: yesEnergies, 2023
Small dust grains cause a higher intensity of increase in the flow resistance of the fibrous filter bed, which, due to the established value of the permissible resistance, results in a shorter period of operation of the air filter and the vehicle. At the
Tadeusz Dziubak
doaj   +1 more source

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