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Träfflista för sökning "WFRF:(Carlsson Tomas) srt2:(1995-1999)"

Sökning: WFRF:(Carlsson Tomas) > (1995-1999)

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  • Anderson, Leif G., et al. (författare)
  • The effect of the Siberian tundra on the environment of the shelf seas and the Arctic Ocean
  • 1999
  • Ingår i: Ambio. - 0044-7447. ; 28:3, s. 270-280
  • Tidskriftsartikel (refereegranskat)abstract
    • The Tundra Ecology -94 expedition investigated inflow of inorganic and organic carbon to the shelf seas by river runoff, and its transformation by biochemical processes in seawater and sediment. In addition, anthropogenic radionuclides, 137Cs, 90Sr, and 239,240Pu, were studied in water and sediments. The distribution of dissolved inorganic carbon indicates that the majority of the Ob and Yenisey discharges flow into the Laptev Sea before entering the central Arctic Ocean. The sediment study shows that there is a marked difference in benthic oxygen uptake, efflux of dissolved inorganic carbon and nutrients between localities. 137Cs activity from the Chernobyl accident is 30% in the Barents, Kara, and Laptev Seas. 137Cs increased from 5-8 Bq m-3 in Barents Sea, 5-13 Bq m-3 in the Kara Sea to 8-15 Bq m-3 in the Laptev Sea, but with locally low concentrations at the river mouths. Corresponding values for 90Sr were 2.5, 3, and 4 Bq m-3, respectively.
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3.
  • Nyberg, Tomas, et al. (författare)
  • Diamond deposition from halogenated methane precursors on Si and SiC substrates
  • 1997
  • Ingår i: Diamond and Related Materials. ; 6:1, s. 85-88
  • Tidskriftsartikel (refereegranskat)abstract
    • Diamond films have been grown on Si and SiC substrates using the hot filament method and CF4, CCl2F2 and CCl4 as carbon precursor gases. It has been shown that the quality of the diamond films grown on Si substrates gets worse when the fluorine concentra
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