Sökning: "Hans sand"

Hittade 5 avhandlingar innehållade orden Hans sand.

  1. 1. Studies on south Swedish sand vegetation

    Författare :Hans Olsson; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Botanik;

    Sammanfattning : .... LÄS MER

  3. 2. On the Assessment of Internal Erosion of Dam Cores of Glacial Till

    Författare :Hans Rönnqvist; Kaare Höeg; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil Mechanics; Geoteknik;

    Sammanfattning : The objective of this study is twofold; on the one hand it investigates the susceptibility to suffusion of glacial till, and, on the other, it presents approaches to evaluate internal erosion susceptibility of dams composed of this type of core soil. Concentrated leak erosion, backward erosion, contact erosion, and suffusion erosion are the mechanisms associated with the initiation of internal erosion. LÄS MER

  4. 3. Chemical exposures, biological monitoring and cancer risks in Swedish aluminium foundries and remelting plants

    Författare :Håkan Westberg; Hans Welinder; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : In aluminium foundries and remelting plants, a wide range of chemical agents are formed and emitted, including some highly toxic organochlorine compounds. This thesis explores emissions and exposures, as well as worker risk of porphyria and cancer. LÄS MER

  5. 4. Excess pore water pressure generation in crushed and fine granular materials under cyclic traffic loads

    Författare :Tan Manh Do; Jan Laue; Hans Mattsson; Qi Jia; Ivo Herle; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geoteknik; Soil Mechanics;

    Sammanfattning : Excess pore water pressure can develop in subgrades of railway and pavement substructures due to cyclic loading from heavy traffic, leading to the migration of fine particles into upper layers. This migration can clog pores and diminish the drainage capacity of upper layers,negatively impacting the long-term performance of sub-structures and service life, ultimately risking failure. LÄS MER

  7. 5. Particle Methods for Modelling Granular Material Flow

    Författare :Simon Larsson; Pär Jonsén; Hans-Åke Häggblad; Gustaf Gustafsson; Eugenio Oñate; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : Granular materials are very abundant in nature and are often used in industry, wherethe dynamics of granular material ow is of relevance in many processes. There arestrong economic and environmental incentives for increased eciency in handling andtransporting granular materials. LÄS MER