Sökning: "thorium"

Visar resultat 1 - 5 av 12 uppsatser innehållade ordet thorium.

  1. 1. Uptake and retainment of radionuclides in edible mushrooms – from fruiting to cooking

    Master-uppsats,

    Författare :Delshad Mansour Ayoubi; [2022-12-06]
    Nyckelord :Medical physics; Activity concentration; Transfer coefficient; Dose;

    Sammanfattning : Purpose: The purpose of this study was to study the uptake, distribution and transfer of Mn-54, Zn-65, U-238, U-235, U-234, and Po-210 in mushrooms and their respective caps and stalks, the effects of chelates and ligands, and the potential release of radionuclides during a cooking procedure. Introduction: Fungi are organisms that are composed of a fruiting body (mushroom) and tubular hyphae, that branches out into complex networks called mycelium. LÄS MER

  3. 2. Assessing the controls of the fluoride concentrations in the groundwater of Gothenburg area

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Crayton Enga Bessong; [2022-11-04]
    Nyckelord :Fluoride; Groundwater; Fluorite; Solubility; Fluorosis; Idefjorden Terrane;

    Sammanfattning : The human uptake of fluoride can promote healthy teeth in low concentration (1.5 mg/l). Drinking water is a major route to which we humans are expose to fluoride intake. LÄS MER

  4. 3. Experimental studies at CERN-nTOF of the 230Th(n,f) reaction

    Kandidat-uppsats, Uppsala universitet/Tillämpad kärnfysik

    Författare :Felicia Lapinski; [2020]
    Nyckelord :fission; neutron induced fission; fission cross section; fission fragment angular distribution; thorium;

    Sammanfattning : This work investigates the feasibility to perform an experiment at CERN n_TOF to study the fission cross section and fission fragment angular distribution (FFAD) of the 230Th(n,f) reaction. An analysis of fission fragment energy losses in the experimental target resulted in a choice of target thickness of 0. LÄS MER

  5. 4. Virtual Studies of Nuclear Fission : A comparison of n- and p- induced fission using GEF

    Kandidat-uppsats, Uppsala universitet/Tillämpad kärnfysik

    Författare :Dany Gabro; [2017]
    Nyckelord :Fission; proton induced; neutron induced; GEF; uranium; neptunium; thorium; protaktinium;

    Sammanfattning : A General Description of Fission Observables (GEF) version 2016/1.2 is a software which simulates various types of fission. The main objective of this project is to compare the proton induced fission with the neutron induced fission of the same fissioning system. The proton induced fission was recently introduced to GEF and is relatively untested. LÄS MER

  7. 5. EGS : Framtidens Geotermiska System

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Hanna Kervall; [2017]
    Nyckelord :EGS; hydroshearing; hydraulisk hammarborrteknik; granitisk berggrund; Newberry; Earth and Environmental Sciences;

    Sammanfattning : The increasing demand for eco-friendly energy alternatives and the changing requirements of state of the art EGS-plants (Enhanced Geothermal Systems) have set the mark for many countries to start evaluating their geothermal assets. By using the EGS-technique, artificial reservoir providing district heating and electricity are created around the world by stimulating the bedrock hydrostatically with a process called hydroshearing. LÄS MER