Search for dissertations about: "Cold Temperature"

Showing result 16 - 20 of 418 swedish dissertations containing the words Cold Temperature.

  2. 16. Enzyme Cold Adaptation through Evolution of Protein Flexibility

    Author : Jaka Sočan; Johan Åqvist; Hugo Gutiérrez-de-Terán; Janez Mavri; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; EVB; Empirical valence bond method; Pancreatic elastase; α-amylase; Enzyme catalysis; Enzyme evolution; Cold adaptation; Temperature dependence of catalytic rates; Psychrophilic enzyme; Molekylär biovetenskap; Molecular Life Sciences;

    Abstract : What lives, evolves. Macromolecular catalysis is a process, central to both evolutionary and metabolic aspect of life, as it provides a systematic bias favouring certain chemical processes. READ MORE

  4. 17. Simulated and observed change of precipitation and temperature in Europe with focus on the Greater Baltic Area

    Author : Alexander Walther; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; climatology; precipitation; temperature; extremes; thermal growing season; diurnal cycle; regional climate model;

    Abstract : The regional climate of the Greater Baltic Area is complex and varies at a multitude of scales in space and time. This thesis contributes to increased understanding of climate change and climate variability in this area focusing on four significant research topics. Droughts have a considerable ecological and socio-economic impact. READ MORE

  5. 18. A study on the possibilities of improving the environment by the use of less detrimental lubricants in cold rolling

    Author : Mohammed Tahir; KTH; []
    Keywords : Environmental lubricants; Lubrication; Cold rolling; Friction; Forward slip; Surface roughness; Surface temperature; Aluminium strip;

    Abstract : .... READ MORE

  6. 19. Freezing Temperature Flows in Railway Tunnels and its Consequence on the Rock Supporting Structure, the Rock and the Reinforcing Elements

    Author : Anna Andrén; Lars-Olof Dahlström; Erling Nordlund; Lars O Ericsson; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tunnel; frost penetration; ice formation; freeze-thaw test; frost shattering; temperature measurement; maintenance; degradation of rock and shotcrete; cold climate; Tunnel; köldinträngning; isbildning; frystester; frostsprängning; temperaturmätning; underhåll; nedbrytning av berg och sprutbetong; kallt klimat; Mining and Rock Engineering; Gruv- och berganläggningsteknik;

    Abstract : Water in the surrounding rock mass flows into the tunnel via naturally occurring joints and via cracks caused by the blasting used to excavate the tunnel. The most common method in Sweden to reduce or prevent leakage problems are first and foremost the use of grouting. READ MORE

  7. 20. Footwear for cold environments : thermal properties, performance and testing

    Author : Kalev Kuklane; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Industrial Work Environment; Industriell produktionsmiljö;

    Abstract : Footwear with various insulation levels was evaluated. Some footwear was manufactured both with and without steel toe cap. Comparative studies between various methods (thermal foot model, human subjects, EN 344) were carried out. Data from subjects and foot model were used in evaluation of thermal properties of footwear. READ MORE