Sökning: "Fluoride"

Visar resultat 1 - 5 av 50 uppsatser innehållade ordet Fluoride.

  1. 1. Riskmoment vid släckning av brand i litium-jonbatterier ombord på fartyg

    Uppsats för yrkesexamina på grundnivå, Linnéuniversitetet/Sjöfartshögskolan (SJÖ); Linnéuniversitetet/Sjöfartshögskolan (SJÖ)

    Författare :William Lif; André Sehlin; [2020]
    Nyckelord :Lithium-ionbatteries; hydrogen fluoride; firefighting techniques; battery fires; risks; hazards; Litium-jonbatterier; vätefluorid; brandsläckningsteknik; batteribrand; risker;

    Sammanfattning : Detta arbete söker att svara på vilka risker som måste beaktas vid bekämpningen av en brand i litium-jonbatterier ombord på fartyg. Antalet elbilar med denna typ av batterier ökar i popularitet och transporteras ofta via fartyg. LÄS MER

  2. 2. Oral fluoride retention after use of mouth rinses with different fluoride content

    Master-uppsats, Malmö universitet/Odontologiska fakulteten

    Författare :Lisa Hansen; Alexander Stime; [2019]
    Nyckelord :Fluoride;

    Sammanfattning : Abstract Objective: The purpose of the study is to investigate how fluoride content in saliva depends on different fluoride mouth rinses: 1450 ppm, 910 ppm, 225 ppm and to compare a new 1450 ppm fluoride mouth rinse with the other concentrations. Material and method: The study included 17 subjects which rinsed with three different mouth rinses, A (225 ppm), B (1450 ppm) and C (910 ppm) at three different times. LÄS MER

  3. 3. Radiation protection measurements in clinical practice - Dosimetry with NaCl pellets

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Petter Wilke; [2019]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Within the field of medical radiation protection, radiation safety and personal dosimetry, there is a constant pursuit for improving existing methods and evaluating new approaches for measuring and quantifying the radiation doses that hospital staff may be exposed to in their clinical work. There are numerous ways of determining what doses the staff are being exposed to and the most commonly used is based on thermoluminescent dosemeters (TLD) with e. LÄS MER

  4. 4. Advanced rear contact design for CIGS solar cells

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Jorge Alexandre De Abreu Mafalda; [2019]
    Nyckelord :CIGS; HfO2; surface passivation; alkali treatment; point contact openings; SCAPS;

    Sammanfattning : The current trend concerning the thinning of solar cell devices is mainly motivated by economic aspects, such as the cost of the used rare-earth elements, and by the requirements of emergent technologies. The introduction of ultra-thin absorber layers results in a reduction of used materials and thus contributes to a more cost-effective and time-efficient production process. LÄS MER

  5. 5. Efficacy of fluoride varnish in preventing white spot lesions during treatment with fixed orthodontic appliances A triple blinded randomized controlled trial

    Magister-uppsats, Malmö universitet/Odontologiska fakulteten

    Författare :Salem Abdulraheem; [2018]
    Nyckelord :;

    Sammanfattning : Aim: The aim of this study was to evaluate the efficacy of a novel fluoride varnish (NFPV, Fluor Protector S) in preventing development of white spot lesions in adolescents undergoing treatment with fixed orthodontic appliances. Material and methods: 185 patients aged between 12 and 18 years planned for orthodontic treatment with fixed appliance were randomized into varnish or placebo group. LÄS MER