Sökning: "annika 2019"

Visar resultat 1 - 5 av 28 avhandlingar innehållade orden annika 2019.

  1. 1. Dynamics of Spent Nuclear Fuel Dissolution : Impact of Catalysis, Matrix Composition and Time Evolution

    Författare :Annika Carolin Maier; Mats Jonsson; Christophe Jégou; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry;

    Sammanfattning : Worldwide, nuclear power produces a large portion of the electricity that we consume every day. While nuclear energy comes with certain advantages, waste originating from its use is of particular concern. LÄS MER

  3. 2. Electrochemical properties of alternative polymer electrolytes in fuel cells

    Författare :Annika Carlson; Rakel Lindström; Göran Lindbergh; Carina Lagergren; Mohamed Mamlouk; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fuel cell; anion exchange membrane; proton exchange membrane; electrode morphology; hydrogen oxidation reaction; water transport; poly phenylene oxide ; cellulose; bränslecell; anjonledande membran; protonledande membran; elektrodstruktur; vätgasoxidation; vattentransport; poly fenylenoxid ; cellulosa; Chemical Engineering; Kemiteknik;

    Sammanfattning : Fuel cells, using hydrogen as energy carrier, allow chemically‑stored energy to be utilized for many applications, including balancing the electrical grid and the propulsion of vehicles. To make the fuel cell technology more accessible and promote a sustainable energy society, this thesis focuses on alternative polymer electrolytes, as they can potentially lead to a lower cost and a more environmentally‑friendly fuel cell. LÄS MER

  4. 3. Essays in Macroeconomics and Political Economy

    Författare :Mathias Pronin; Anna Seim; Annika Alexius; Jesper Lindé; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Monetary Policy; House Prices; Bayesian Estimation; Wealth Distribution; Heterogeneous Preferences; Political Budget Cycles; Economics; nationalekonomi;

    Sammanfattning :     The Response of the Riksbank to House Prices in SwedenIn the aftermath of the recent financial crisis, an environment of historically low interest rates and extensive household indebtedness in the OECD countries have triggered a vivid debate on whether central banks should react to house-price fluctuations in their pursuit of monetary policy. In Sweden, a period of low policy rates and house-price inflation was halted when the central bank increased the interest rates in 2010. LÄS MER

  5. 4. Det flerspråkiga NO-klassrummet : en studie om translanguaging som läranderesurs i ett NO-klassrum

    Författare :Annika Karlsson; Malmö universitet; []
    Nyckelord :appropriering; det flerspråkiga NO-klassrummet; diskursiv rörlighet; meningsskapande; språkliga loopar; språkliga resurser;

    Sammanfattning : Syftet med denna avhandling är att synliggöra flerspråkiga elevers användning av sina första- och andraspråk i ett flerspråkigt NO-klassrum där man använder och uppmuntrar translanguaging och tydliggöra om och i så fall på vilka sätt dessa processer kan skapa förutsättningar för lärande. Avhandlingen utgår från sociokulturella teorier om språk och lärande, med särskilt fokus på social-semiotiska perspektiv. LÄS MER

  7. 5. Greenhouse gas emission from tropical reservoirs : Spatial and temporal dynamics

    Författare :Annika Linkhorst; Sebastian Sobek; Frédéric Guérin; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; methane; carbon dioxide; climate; carbon cycle; lake; limnology; inland water;

    Sammanfattning : The emission of methane (CH4) and carbon dioxide (CO2) from reservoirs has been estimated to make up for about 1.3% of the global anthropogenic greenhouse gas emission. The impoundment of a river leads to the accumulation of sediment that is brought in from inflowing rivers, and the sediment organic matter is degraded to CH4 and CO2. LÄS MER