Sökning: "Physics and Astronomy"

Visar resultat 1 - 5 av 794 uppsatser innehållade orden Physics and Astronomy.

  1. 1. Copper abundances of F and G dwarf stars in the Milky Way

    Kandidat-uppsats, Lunds universitet/Astronomi

    Författare :Filip Andersson; [2018]
    Nyckelord :Copper Abundance; Galaxy Formation; Dwarf Stars; Milky Way; Chemical Evolution; Physics and Astronomy;

    Sammanfattning : An investigation has been done in order increase the understanding of the origin and chemical evolution of copper in the Milky Way stellar disks. This is interesting to know as it plays a part of the Galaxy puzzle, so we become more able to map how and why galaxies look like they do. LÄS MER

  2. 2. The impact of turbulence on supernovae shockwaves

    Kandidat-uppsats, Lunds universitet/Astronomi

    Författare :Loke Lönnblad Ohlin; [2018]
    Nyckelord :astrophysics; astronomy; supernovae; shockwaves; interstellar medium; massive stars; turbulence; molecular clouds; Physics and Astronomy;

    Sammanfattning : The momentum and energy injection from supernovae is one of the main feedback modes, and is therefore key to the understanding of galaxy evolution and star formation. However, due to low resolution, large scale galaxy simulations often have issues with accurately modelling supernovae, and therefore rely on sub-grid models. LÄS MER

  3. 3. Atmospheric Ice Formation Potential of Biomass Combustion Aerosol Particles (from residential cooking in Sub-Saharan East Africa)

    Master-uppsats, Lunds universitet/Kärnfysik; Lunds universitet/Fysiska institutionen

    Författare :Lovisa Nilsson; [2017]
    Nyckelord :Ice Nucleation; Aerosol particles; Biomass Combustion; Cook Stoves; Clouds; CFDC; Physics and Astronomy;

    Sammanfattning : .... LÄS MER

  4. 4. CO and CO2 Detection for Catalysis Diagnosis by Means of PLIF

    Magister-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Sebastian Pfaff; [2017]
    Nyckelord :plif; laser diagnostics; catalysis; carbon monoxide; carbon dioxide; palladium; planar laser induced fluorescence; Physics and Astronomy;

    Sammanfattning : In order to fully understand the underlying processes of catalysis, it is vital to combine measurements of the catalyst surface, where the reaction occurs, with measurements of the gas concentration close to the catalyst. We have developed a convenient setup, which uses a single laser system to visualise the gas surrounding a working catalyst in situ at realistic operating conditions. LÄS MER

  5. 5. Nucleosynthesis in accretion disks around black holes

    Master-uppsats, Lunds universitet/Institutionen för astronomi och teoretisk fysik; Lunds universitet/Astronomi

    Författare :Neige Frankel; [2017]
    Nyckelord :accretion disk; Nucleosynthesis; black hole; high energy; white dwarf tidal disruption; Physics and Astronomy;

    Sammanfattning : Nucleosynthesis is the mechanism which produces new elements in nuclear reactions. Nuclear reaction rates are highly temperature dependant, and nuclear reactions take place in very hot environments. Current theories predict that the light elements such as hydrogen and helium were produced during the Big Bang. LÄS MER

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