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Träfflista för sökning "WFRF:(Bohgard Mats) srt2:(2005-2009)"

Sökning: WFRF:(Bohgard Mats) > (2005-2009)

  • Resultat 1-10 av 73
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1.
  • Akselsson, Roland, et al. (författare)
  • Fysikaliska faktorer
  • 2005
  • Ingår i: Arbete Människa Teknik. - 9175228955 ; , s. 45-113
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
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2.
  • Bohgard, Mats, et al. (författare)
  • Chemical Health Risks
  • 2009
  • Ingår i: Work and Technology on Human Terms. - 9789173650588 ; , s. 307-337
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
  •  
3.
  • Bohgard, Mats, et al. (författare)
  • Fysikaliska faktorer
  • 2008
  • Ingår i: Arbete och teknik på människans villkor. - 9789173650373 ; , s. 191-307
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
  •  
4.
  • Bohgard, Mats, et al. (författare)
  • Kemiska hälsorisker
  • 2008
  • Ingår i: Arbete och teknik på människans villkor. - 9789173650373 ; , s. 309-337
  • Bokkapitel (populärvet., debatt m.m.)
  •  
5.
  • Bohgard, Mats, et al. (författare)
  • Physical Factors
  • 2009
  • Ingår i: Work and Technology on Human Terms. - 9789173650588 ; , s. 191-306
  • Bokkapitel (övrigt vetenskapligt/konstnärligt)
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9.
  • Dahl, Andreas, et al. (författare)
  • Traffic-generated emissions of ultrafine particles from pavement-tire interface
  • 2006
  • Ingår i: Atmospheric Environment. - : Elsevier. - 1352-2310 .- 1873-2844. ; 40:7, s. 1314-1323
  • Tidskriftsartikel (refereegranskat)abstract
    • In a road simulator study, a significant source of sub-micrometer fine particles produced by the road-tire interface was observed. Since the particle size distribution and source strength is dependent on the type of tire used, it is likely that these particles largely originate from the tires, and not the road pavement. The particles consisted most likely of mineral oils from the softening filler and fragments of the carbon-reinforcing filler material (soot agglomerates). This identification was based on transmission electron microscopy studies of collected ultrafine wear particles and on-line thermal treatment using a thermodesorber. The mean particle number diameters were between 15-50 nm, similar to those found in light duty vehicle (LDV) tail-pipe exhaust. A simple box model approach was used to estimate emission factors in the size interval 15-700 nm. The emission factors increased with increasing vehicle speed, and varied between 3.7 x 10(11) and 3.2 x 10(12) particles vehicle(-1) km(-1) at speeds of 50 and 70 km h(-1). This corresponds to between 0.1-1% of tail-pipe emissions in real-world emission studies at similar speeds from a fleet of LDV with 95% gasoline and 5% diesel-fueled cars. The emission factors for particles originating from the road-tire interface were, however, similar in magnitude to particle number emission factors from liquefied petroleum gas-powered vehicles derived in test bench studies in Australia 2005. Thus the road-tire interface may be a significant contributor to particle emissions from ultraclean vehicles. (c) 2005 Elsevier Ltd. All rights reserved.
  •  
10.
  • Gustafsson, Mats, et al. (författare)
  • Properties and toxicological effects of particles from the interaction between tyres, road pavement and winter traction material
  • 2008
  • Ingår i: Science of the Total Environment. - : Institutionen för klinisk och experimentell medicin. - 0048-9697 .- 1879-1026. ; 393:2-3, s. 226-240
  • Tidskriftsartikel (refereegranskat)abstract
    • In regions where studded tyres and traction material are used during winter, e.g. the Nordic countries, northern part of USA, Canada, and Japan, mechanically generated particles from traffic is the main reason for high particle concentrations in busy street- and road environments. In many Nordic municipalities the European environmental quality standard for inhalable particles (PM10) is exceeded due to these particles. In this study, particles from the wear of studded and studless friction tyres on two pavements and traction sanding were generated using a road simulator. The particles were characterized using particle sizers, PIXE and electron microscopy. Cell studies were conducted on particles sampled from the tests with studded tyres and compared with street environment, diesel exhaust and subway PM10, respectively. The results show that in the road simulator, where resuspension is minimised, studded tyres produce tens of times more particles than friction tyres. Chemical analysis of the sampled particles shows that the generated wear particles consists almost entirely of minerals from the pavement stone material, but also that S is enriched for the sub-micron particles and that Zn is enriched for friction tyres for all particles sizes. The chemical data can be used for source identification and apportionment in urban aerosol studies. A mode of ultra-fine particles was also present and is hypothesised to originate in the tyres. Further, traction material properties affect PM10 emission. The inflammatory potential of the particles from wear of pavements seems to depend on type of pavement and can be at least as potent as diesel exhaust particles. The results implies that there is a need and a good potential to reduce particle emission from pavement wear and winter time road and street operation by adjusting both studded tyre use as well as pavement and traction material properties.
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