Sökning: "lower"

Visar resultat 1 - 5 av 11298 uppsatser innehållade ordet lower.

  1. 1. ENVIRONMENTAL RADIOLOGICAL STUDIES OF KVARNTORPSHÖGEN Dose and Radiological Risk Assessments for Humans and Biota

    Master-uppsats,

    Författare :Felicia Hultqvist; [2021-04-06]
    Nyckelord :Medical physics; NORM; TENORM; Shale ash; Uranium; Polonium; Radiological risk; Humans; Biota;

    Sammanfattning : Background: The pile Kvarntorpshögen and the lakes Surpölen and Norrtorpssjön are the remains of an industry which mined and processed oil shales to extract oil during World War II. The pile mainly consists of shale ash, a waste from the production, while the lakes are nowadays water-filled mining pits. LÄS MER

  2. 2. EVALUATION OF RADIATION DOSES USING CONE BEAM COMPUTED TOMOGRAPHY IN ENDOVASCULAR AORTIC REPAIR AND SCOLIOSIS PROCEDURES

    Master-uppsats,

    Författare :Louise Strandberg; [2021-04-06]
    Nyckelord :Medical physics; Cone beam CT; CT; EVAR; scoliosis; radiation dose; effective dose;

    Sammanfattning : Purpose: The study includes the two areas, vascular surgery and orthopedics, and focuses on endovascular aortic aneurysm repair (EVAR) and scoliosis procedures. EVAR procedures contribute to a high radiation dose to the patient and for scoliosis procedures, it is often young girls that are undergoing surgery. LÄS MER

  3. 3. Variations in depositional environments of the Paleogene Firkanten Formation across Adventdalen, from Operafjellet to Breinosa

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Anna Stella Guðmundsdóttir; [2021-03-18]
    Nyckelord :;

    Sammanfattning : The lowermost Paleogene clastic infill of the Central Spitsbergen Tertiary Basin, the coal bearing FirkantenFormation, has been the subject of study for researchers in the past but little focus has been on thenortheast edge of the basin until now. Due to the economic potential of the coal seams in the formation,the Norwegian mining company, Store Norske Spitsbergen Grubekompani (SNSG), has for several yearsconducted core drilling in key locations in basin, and for decades, they have given an access to their corematerial to researchers. LÄS MER

  4. 4. Acid sulphate soils and its influence on metal concentrations in adjacent water bodies. - A case study from Halland, SW Sweden

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Amanda Lindgren; [2021-03-10]
    Nyckelord :acid sulphate soils; metal distribution; surface water; climate; physicochemistry;

    Sammanfattning : Acid sulphate soils have been referred to as being among the most harmful soils in the worlddue to their ability to severely decrease the pH of the water, consequently enabling an increasedmetal load to recipient water streams, lakes, groundwater reservoirs and estuaries. The presenceof acid sulphate soils has triggered several fish kill episodes in northern Scandinavia and thesoils are today threatening many of the national environmental goals of Sweden. LÄS MER

  5. 5. Sambandet mellan aktiers PE-tal och avkastning på den svenska aktiemarknaden

    Kandidat-uppsats, Göteborgs universitet/Företagsekonomiska institutionen

    Författare :Dlawar Kanabi; Simon Kjellberg; [2021-02-24]
    Nyckelord :;

    Sammanfattning : Background and discussion of problem: The conventional mindset among most investors has beento opt for stocks with low PE-ratios, but recent studies have found that stocks with high PE-ratioshave given higher return both on the American and global stock markets. Therefore, the aim of thestudy was to find out if a similar trend could be observed on the Swedish stock market as it has beenshown to exist on the American one. LÄS MER