Sökning: "Fluor"

Visar resultat 1 - 5 av 42 uppsatser innehållade ordet Fluor.

  1. 1. Propagation of Nuclear Data Uncertainties for Reactor Physics Parameters in Fluorine-19-based Molten Salt Reactors

    Master-uppsats, Uppsala universitet/Tillämpad kärnfysik

    Författare :Sigfrid Stjärnholm; [2023]
    Nyckelord :;

    Sammanfattning : It could be argued that a renaissance is taking place for the global interest in nuclear power - especially for the development of the next generation of reactor systems that aim at solving the problems with contemporary energy production with nuclear technology. One such proposed concept for Gen IV nuclear power is a Molten Salt Reactor (MSR), in which the nuclear fuel is in solution of a salt - often based on fluorine or chlorine. LÄS MER

  3. 2. Aktivitetsmonitorering av transportrör från cyclotron till strålskyddsceller

    Uppsats för yrkesexamina på grundnivå, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Hussain Al-derawi; [2023]
    Nyckelord :;

    Sammanfattning : I denna rapport beskrivs tillverkningen av en aktivitetsmonitor. Denna aktivitetsmonitor kommer att användas för en cyklotron som producerar Fluor-18. Detektorerna placeras i var sin blylåda som har ledningar för Fluor-18. Med hjälp av denna aktivitetsmonitor kan man förutse möjliga problem med ledningarna som Fluor-18 transporteras igenom. LÄS MER

  4. 3. Spatial analysis of arsenic and fluoride mobilization in groundwater around Mount Meru, northern Tanzania

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Henriette Nishimwe; [2023]
    Nyckelord :Arsenic; Fluoride; Groundwater; Mobilization; Mount Meru; Geochemical and Spatial Modelling; Arsenic; Fluoride; Groundwater; Mobilization; Mount Meru; Geochemical and Spatial Modelling;

    Sammanfattning : In Tanzania, approximately 76% of the drinking water supplies is dependent on groundwater sources. However, the groundwater in north Tanzania is susceptible to contamination by arsenic and fluoride. This study examines the spatial analysis of arsenic and fluoride mobilization in groundwater around Mount Meru, located in northern Tanzania. LÄS MER

  5. 4. Prevalence of white spot lesions in maxilla and mandible in orthodontic patients with fixed appliance treated with a high fluoride varnish or a placebo varnish : -A randomized controlled trial on adolescents

    Master-uppsats, Malmö universitet/Odontologiska fakulteten (OD)

    Författare :Lisa Wallman; Christoffer Sörebö; [2022]
    Nyckelord :Fixed orthodontic appliances; Fluoride Varnish; Mandible; Maxilla; White Spot Lesions;

    Sammanfattning : Aim: The aim of this study was to investigate if there is a beneficial effect on the prevalence of white spot lesions (WSL) in the mandibular and maxillary teeth when the teeth in the maxilla are treated with fluoride varnish compared to a placebo group. The null hypothesis was that there is no difference between the test and placebo group in development of WSL. LÄS MER

  7. 5. Evaluation of PFAS removal from nanofiltration membrane concentrate using foam fractionation

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :William Stefansson; [2022]
    Nyckelord :PFAS; Aeration foam fractionation; Nanofiltration membrane; DWTP; Surfactant; PFAS; Skumfraktionering; Nanofiltration; Vattenverk; Surfaktant;

    Sammanfattning : Per- and polyfluorinated substances (PFASs) have become an urgent topic in the water treatment industry in recent years as a consequence of new scientific discoveries of the correlation between the ingestion of some PFASs and their toxicity in humans and other organisms. PFASs are synthetic compounds present in a variety of products. LÄS MER