Essays about: "Per Bäck"

Found 4 essays containing the words Per Bäck.

  1. 1. Bäcklund transformations for minimal surfaces

    University essay from Linköpings universitet/Matematik och tillämpad matematik; Linköpings universitet/Tekniska fakulteten

    Author : Per Bäck; [2015]
    Keywords : Bäcklund transformations; Liouville equation; minimal surfaces; Ribaucour transformations; Thybaut transformations.;

    Abstract : In this thesis, we study a Bäcklund transformation for minimal surfaces - surfaces with vanishing mean curvature - transforming a given minimal surface into a possible infinity of new ones. The transformation, also carrying with it mappings between solutions to the elliptic Liouville equation, is first derived by using geometrical concepts, and then by using algebraic methods alone - the latter we have not been able to find elsewhere. READ MORE

  3. 2. Study of Oil-Fired Electricity Production on Cuba; Means of Reducing Emissions of SO2 by Increasing Plant Efficiency

    University essay from KTH/Energiteknik

    Author : Erik Bäck; Henrik Berg; [2013]
    Keywords : ;

    Abstract : Cuba is a country that is highly dependent on fossil fuel for the domestic electricity supply. Oil-fired power plants account for a major share of the power generation. A mutual issue with these power plants is that they suffer from being inefficient, outdated and insufficiently maintained. READ MORE

  4. 3. Avskiljning av uran från dricksvatten med reaktiva filter

    University essay from SLU/Dept. of Soil Sciences

    Author : Ellinor Dässman; [2008]
    Keywords : uran; reaktiva filter; järnoxid; bergsborrade brunnar; jämviktsmodellering; Visual Minteq;

    Abstract : Water is our most important provision and its quality is above all dependent on the geological conditions in the area from where it is extracted. Due to geological properties there are certain areas with an elevated risk of high uranium levels in the ground water, which in turn constitutes a risk for human health. READ MORE

  5. 4. Skogsägarna NORRSKOG:s slutavverkningar och PEFC-kraven : fältinventering och intervjuer

    University essay from SLU/Dept. of Forest Resource Management

    Author : Niklas Fogdestam; [2004]
    Keywords : logging;

    Abstract : Skogsägarföreningen Norrskog är ansluten till PEFC och drygt 15% av dess medlemmar är också anslutna. Enligt beslut i Norrskogs styrelse utförs all avverkning på objektsnivå i enlighet med PEFC:s normer oberoende av om skogsägaren i fråga är certifieradeller ej. READ MORE