Search for dissertations about: "stefan sjöberg"

Showing result 1 - 5 of 8 swedish dissertations containing the words stefan sjöberg.

  2. 1. Influence of running-in on gear efficiency

    Author : Sören Sjöberg; Ulf Olofsson; Björklund Stefan; Lehtovaara Arto; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gears; gear manufacturing; running-in; efficiency; friction; surface topography; Machine Design; Maskinkonstruktion;

    Abstract : The general trend in gear industry is an increased focus on gear transmission efficiency. This thesis focuses on the understanding of how different gear manufacturing methods – particularly the contribution of the running-in process – affect the surface characteristics and friction response, with the purpose of increasing gearbox efficiency. READ MORE

  4. 2. Utilization of waste materials for extraction of strategic metals : a biogeochemical approach

    Author : Viktor Sjöberg; Stefan Karlsson; Bert Allard; Mattias Bäckström; Christian Ekberg; Örebro universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biogeochemistry; ICP-QMS; MP AES; strategic metals; vanadium; uranium; mine waste; steel slag; shale residues; Enviromental Science; Miljövetenskap;

    Abstract : Worldwide the modern society produces vast amounts of waste materials containing strategic and valuable metals. Some of them are of substantial economic or environmental significance if controlled recovery of metals can be performed or if uncontrolled release to the environment occurs. READ MORE

  5. 3. How Do They Make It? : perspectives on labour market participation among descendants of immigrants in Sweden

    Author : Pinar Aslan; Nader Ahmadi; Stefan Sjöberg; Eva Wikström; Sven Hessle; Umeå universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; labour market participation; labour market conditions; occupational attainment; aspirations; descendants of immigrants; second generation; gender; family; social capital; cultural capital; habitus;

    Abstract : This is a compilation dissertation based on a comprehensive summary and four empirical articles. The overarching aim of the dissertation is to study influences on the occupational aspirations and attainments of employed descendants of non-European, non-Western immigrants in Sweden, from their own perspectives. READ MORE

  6. 4. Synthesis of Organic Compounds for Nuclide Therapy : Derivatives of Carboranes, 9-Aminoacridine and Anthracyclines

    Author : Senait Ghirmai; Stefan Sjöberg; Vladimir Tolmachev; Tor Kihlberg; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; 9-Aminoacridin; Carborane; Daunorubicin; Doxorubicin; BNCT; Iodine-125; Organisk kemi; Organic chemistry; Organisk kemi;

    Abstract : This thesis addresses the synthesis of organic compounds, some of them are derivatives of compounds with DNA binding properties, for potential use in targeted nuclide therapy. The compounds synthesized therefore also need to contain potent nuclides. READ MORE

  7. 5. Uncertainty in Sliding Stability Analyses of Existing Concrete Gravity Dams with Bonded Concrete-Rock Interfaces

    Author : Alexandra Krounis; Stefan Larsson; Fredrik Johansson; Jonny Sjöberg; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Safety assessment of existing dams becomes more and more important with their increasing age. In addition, new regulations, due to climate changes and changes in knowledge, demand a re-evaluation of the existing dams’ safety. READ MORE