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Sökning: WFRF:(Hogstedt G.)

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  • Herrstrom, Per, et al. (författare)
  • Dental amalgam, low-dose exposure to mercury, and urinary proteins in young Swedish men
  • 1995
  • Ingår i: Archives of Environmental Health. - 0003-9896. ; 50:2, s. 103-108
  • Tidskriftsartikel (refereegranskat)abstract
    • Chronic exposure to inorganic mercury can cause kidney injury. Evidence gained from occupational medicine indicates that individuals who are exposed to only environmental sources, including amalgam tooth fillings, are at very little risk. Animal experiments, however, have revealed glomerular lesions of immunologic origin after low-dose exposure to inorganic mercury. In this study, the association between the number of amalgam tooth surfaces, urinary mercury, and proteinuria was explored in a sample of 48 randomly selected, apparently healthy male students who were 17-22 y of age. Presence of any of the following proteins in two separate urine samples was considered to be potentially indicative of any tubular and/or glomerular lesion: albumin, alpha-1-microglobulin (HC-protein), kappa and lambda light chains, and N-acetyl-beta-D-glucosaminidase. No significant relationship was found between any of the proteins and amalgam or urinary mercury. The results of this study did not suggest that amalgam fillings cause kidney dysfunction in humans.
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  • Krebs, C. J., et al. (författare)
  • Terrestrial trophic dynamics in the Canadian Arctic
  • 2003
  • Ingår i: Canadian Journal of Zoology-Revue Canadienne De Zoologie. ; 81, s. 827-843
  • Tidskriftsartikel (refereegranskat)abstract
    • The Swedish Tundra Northwest Expedition of 1999 visited 17 sites throughout the Canadian Arctic. At 12 sites that were intensively sampled we estimated the standing crop of plants and the densities of herbivores and predators with an array of trapping, visual surveys, and faecal-pellet transects. We developed a trophic-balance model using ECOPATH to integrate these observations and determine the fate of primary and secondary production in these tundra ecosystems, which spanned an 8-fold range of standing crop of plants. We estimated that about 13% of net primary production was consumed by herbivores, while over 70% of small-herbivore production was estimated to flow to predators. Only 9% of large-herbivore production was consumed by predators. Organization of Canadian Arctic ecosystems appears to be more top-down than bottom-up. Net primary production does not seem to be herbivore-limited at any site. This is the first attempt to integrate trophic dynamics over the entire Canadian Arctic.
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  • Lindberg, I, et al. (författare)
  • The rise, decline, and future of the Swedish left
  • 2011
  • Ingår i: International journal of health services : planning, administration, evaluation. - 0020-7314. ; 41:4, s. 747-756
  • Tidskriftsartikel (refereegranskat)
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  • Resultat 1-10 av 14

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