Sökning: "stress i högskolan"

Visar resultat 16 - 20 av 94 avhandlingar innehållade orden stress i högskolan.

  1. 16. New developments in hydrofracturing stress measurement techniques and a comparison to the HTPF method

    Författare :Christer Ljunggren; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mining and Rock Engineering; Gruv- och Berganläggningsteknik;

    Sammanfattning : This thesis describes two hydraulic methods for rock stress measurements; hydraulic fracturing and hydraulic tests on pre-existing fractures (the HTPF method). It includes theories to evaluate stress field information for somewhat extraordinary stress and field situations, experimental investigations and field measurements. LÄS MER

  3. 17. System analysis of kitesurfing : Understanding performance and injury risk for on-water board sports

    Författare :Lina Lundgren; Sofia Brorsson; Anna-Lisa Osvalder; Högskolan i Halmstad; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; sport performance; sport injury; musculoskeletal stress; system analysis; usability problems; human movement; Sports; Idrott; MEDICINE; MEDICIN;

    Sammanfattning : Board sports are examples of sports where the interaction of the task, environment and the athlete are essential. As for other sports, there are injuries and other issues associated with these sports, which affect performance and that can be avoided by proper preparation and well- designed equipment. LÄS MER

  4. 18. High performance hybrid mixed elements using orthogonal stress interpolants and scaling of the higher order stiffness

    Författare :Anders Sundin; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Structural Engineering; Konstruktionsteknik;

    Sammanfattning : During the evolution of the finite element method, formulations based on the principle of minimum potential energy have dominated the scene. These formulations employ an assumed displacement field within each element which must preserve continuity of displacements between adjacent elements. LÄS MER

  5. 19. Elucidating the Influence of Food Packaging Attributes on Source-separation of Food Packaging Waste at Home

    Författare :Babak Nemat; Kamran Rousta; Isabel Ordonez; Högskolan i Borås; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Household waste; packaging attributes; packaging waste; consumer s recycling behavior; Resource Recovery; Resursåtervinning;

    Sammanfattning : The global amount of waste generated by households, including food packaging waste, has been increasing continuously across the world, posing a massive threat to societies and the environment. Proper waste management, therefore, has become a challenging environmental issue and a priority for governments. LÄS MER

  7. 20. Thermally Conductive High-Density Polyethylene Composites for Ground Heat Exchangers

    Författare :Adib Kalantar Mehrjerdi; Högskolan i Borås; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; High-density polyethylene; talc; thermal conductivity; thermal diffusivity; thermal stability; melt rheology; oxidation induction time; α relaxation; strain hardening;

    Sammanfattning : Today, the energy used for the heating and cooling of offices, shopping centres, schools, residential areas, andother buildings is as large as 50% of the total energy consumption in the world. The climate change, globalwarming, and environmental issues have forced high requirements for energy efficiency and clean energyproduction in buildings. LÄS MER