Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Ulf Olofsson"'
Estimating PM levels on an underground metro platform by exploring a new model-based factor research
Autor:
Minghui Tu, Ulf Olofsson
Publikováno v:
Atmospheric Environment: X, Vol 22, Iss , Pp 100261- (2024)
Over recent decades, the adverse impacts of airborne particles on human health have received wide attention. Elevated PM concentrations on underground platforms might pose a significant public health issue within underground metro systems. This study
Externí odkaz:
https://doaj.org/article/effeef6f0fc74803b1697e895fedba9c
Autor:
Minghui Tu, Ulf Olofsson
Publikováno v:
Atmospheric Environment: X, Vol 12, Iss , Pp 100134- (2021)
The negative effect of airborne particles on human beings has been widely noticed in recent decades. The high particle mass concentrations on underground platforms can be a significant public health issue for underground metro systems. This study mon
Externí odkaz:
https://doaj.org/article/8a28d3e94c6044daaa7e858935283c0c
Publikováno v:
Atmosphere, Vol 12, Iss 11, p 1493 (2021)
The utilisation of internal combustion engines is one of the main causes of particle emissions in urban areas. As the interest for the utilisation of biofuels increases, it is important to understand their effect on particle number emissions. In this
Externí odkaz:
https://doaj.org/article/299021dcc1154820b0a6d4350d43151c
Publikováno v:
Metals, Vol 11, Iss 11, p 1703 (2021)
Laser cladding is a promising surface treatment for refurbishing worn-out cast-iron brake rotors. Previous studies on laser-cladded brake rotors have demonstrated their extensively higher wear and greater airborne particle emissions, compared with tr
Externí odkaz:
https://doaj.org/article/ed3a681a9d654929be31cc14d7cb5367
Publikováno v:
Energies, Vol 14, Iss 13, p 3908 (2021)
The negative impact of transport on climate has led to incentives to increase the amount of renewable fuels used in internal combustion engines (ICEs). Oxygenated, liquid biofuels are promising alternatives, as they exhibit similar combustion behavio
Externí odkaz:
https://doaj.org/article/93b9108963ce4bcba6cbe08129651bd9
Publikováno v:
Atmosphere, Vol 11, Iss 6, p 621 (2020)
Airborne wear particle emission has been investigated in a pin-on-disc tribometer equipped with particle analysis equipment. The pins are cut out from commercial powder metallurgy automotive brake pads as with and without copper content. The discs ar
Externí odkaz:
https://doaj.org/article/0608edf5fb7645038b8c2dcd99983251
Autor:
Jens Wahlström, Mara Leonardi, Minghui Tu, Yezhe Lyu, Guido Perricone, Stefano Gialanella, Ulf Olofsson
Publikováno v:
Atmosphere, Vol 11, Iss 5, p 488 (2020)
Non-exhaust wear emissions from disc brakes affect the air quality in cities throughout the world. These emissions come from the wear of the contact surfaces of both the pads and disc. The tribological and emissions performance of disc brakes strongl
Externí odkaz:
https://doaj.org/article/fa82302df9974449b7a9e6756e2b7a3c
Publikováno v:
Atmosphere, Vol 10, Iss 5, p 263 (2019)
Brake-related airborne particulate matter contributes to urban emissions in the transport sector. Recent research demonstrated a clear dependence of the number of ultra-fine particles on the disc brake temperature. Above the so-called transition temp
Externí odkaz:
https://doaj.org/article/eacb5dc9e2704f6db9193249d388334b
Publikováno v:
Wear. :204635
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology. 236:3-14
Disc brakes wear during braking events and release airborne particulates. These particle emissions are currently one of the highest contributors to non-exhaust particle emissions and introduce health hazards as well as environmental contamination. To