Search for dissertations about: "radionuclides"

Showing result 1 - 5 of 125 swedish dissertations containing the word radionuclides.

  1. 1. Transport of Radionuclides and Colloid Through Quartz Sand Columns

    Author : Birgit Christiansen-Sätmark; [1995]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; transport; radionuclides; Goethite column experiments; sorption; Quartz; colloid;

    Abstract : Studies of the transport of radionuclides in the geosphere are one of the main tasks for performance assessment of a nuclear waste repository. A possible enhanced transport path for the radionuclides is the formation and transport of non-depositing colloids with a high affinity for radionuclides. READ MORE

  2. 2. Activity concentrations of radionuclides in energy production from peat, wood chips and straw

    Author : Robert Hedvall; [1997]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Radionuclides; peat; wood; chips; straw; bioenergy; biomass; district heating; emission; Cs; Physics; Chernobyl; Radioactivity; Fysik; Technological sciences; Teknik;

    Abstract : In this thesis quantitative analyses of radionuclide concentrations in bioenergy fuels such as peat, wood chips and straw are presented. For comparison a brief description is included of radionuclide concentrations and radiation doses from other sources of power and also from some industrial applications. READ MORE

  3. 3. Radionuclides in the Baltic Sea Ecosystem models and experiments on transport and fate

    University dissertation from Stockholm : Institutionen för systemekologi

    Author : Linda Kumblad; Nils Kautsky; Ulrik Kautsky; Michael Gilek; Michael Thorne; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; radionuclide; baltic sea; ecosystem model; ecosystem dynamics; risk assessment; safety assessment; benthic invertebrates; bioturbation; bioaccumulation; remobilisation; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi;

    Abstract : Manmade radionuclides have been introduced to the environment for almost a century. The main source has been the nuclear weapons testing programmes, but accidental releases from the nuclear power production industries have also contributed. The risk to humans from potential releases from nuclear facilities is evaluated in safety assessments. READ MORE

  4. 4. Element transport in aquatic ecosystems – Modelling general and element-specific mechanisms

    University dissertation from Stockholm : Department of Ecology, Environment and Plant Sciences, Stockholm University

    Author : Lena Konovalenko; Clare Bradshaw; Ulrik Kautsky; Linda Kumblad; Dan Baird; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; radionuclides; elements; concentration ratio; bioaccumulation; biomagnification; fish; modelling; aquatic food web; ecosystem; Cs; Sr; environmental risk assessment; Marine Ecotoxicology; marin ekotoxikologi;

    Abstract : Radionuclides are widely used in energy production and medical, military and industrial applications. Thus, understanding the behaviour of radionuclides which have been or may be released into ecosystems is important for human and environmental risk assessment. READ MORE

  5. 5. Element transport in marine coastal ecosystems – modelling general and element-specific mechanisms

    University dissertation from Stockholm, Sweden : Stockholm University

    Author : Lena Konovalenko; Clare Bradshaw; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Modelling; bioaccumulation; concentration ratio; radionuclides; marine foodweb.; marin ekologi; Marine Ecology;

    Abstract : Understanding the behaviour of naturally-occurring and anthropogenically-derived radionuclides (isotopes) in the marine environment is important, because there is a need for their effective utilization either as in situ tracers or for industry, medical applications, the planning of waste-disposal facilities, and estimations of human and animal health risks. Radionuclides generally have the same chemical properties as their stable element analogues and thus show similar environmental behaviour and cycling to their stable counterparts. READ MORE