Sökning: "Solar activity"

Visar resultat 16 - 20 av 58 uppsatser innehållade orden Solar activity.

  1. 16. PLANNING FOR SOLAR ACCESS.

    Master-uppsats, Lunds universitet/Avdelningen för Energi och byggnadsdesign; Lunds universitet/Institutionen för arkitektur och byggd miljö

    Författare :Alejandro Manso Covarrubias; [2021]
    Nyckelord :Urban planning; daylight; solar access; Lund; Helsingborg; observations.; Technology and Engineering;

    Sammanfattning : Swedish cities are getting denser. People spend a lot of time indoors, it therefore becomes important to guarantee daylight availability and solar access in buildings, in order to save energy and ensure human well-being. However, this becomes important in the case of outdoor spaces as well. LÄS MER

  3. 17. Search for Preserved Methanogenic Organisms in Ophiolitic Rocks through Lipid Biomarker Analysis – Implications for Astrobiological Explorations

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Alexandra Zetterlind; [2020]
    Nyckelord :ophiolite; deep biosphere; archaea; methanogenesis; chemosynthesis; serpentinite-hosted ecosystems; lipid biomarkers; astrobiology; ofiolit; djupbiosfär; arkeér; metanogener; kemosyntes; serpentinit-drivna ekosystem; lipidbiomarkörer; astrobiologi;

    Sammanfattning : Serpentinization is a metamorphic low-temperature geological process, involving a series of chemical reactions that hydrate ultramafic rocks into serpentines and other minerals such as magnetite and brucite. Moreover, the process produces heavily reducing and highly alkaline fluids together with molecular hydrogen (H2) and methane (CH4), which have the capacity to support chemosynthetic microbial life. LÄS MER

  4. 18. Molecular linking towards direct plasmonic transparent solar cell

    Master-uppsats, Uppsala universitet/Institutionen för kemi - Ångström

    Författare :Thinh Nguyen Luong The; [2020]
    Nyckelord :pABA; plasmonic; plasmon; solar; cell; Ag; silver; self; assembly; citrate;

    Sammanfattning : Plasmonic materials have been studied extensively in the last decade for applications in photonics, solar energy utilization and catalysis. The introduction of molecular linker bridging metal particles and oxide semiconductor has been proven to prolong the lifetime of short-lived hot carriers and prevent issues from ohmic contact. LÄS MER

  5. 19. Klimat och väder i Nordatlanten-regionen under det senaste årtusendet

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Linus Brakebusch; [2020]
    Nyckelord :Solar activity; Volcanic activity; North Atlantic Oscillation NAO ; Medieval Warm Period; Little Ice Age; Earth and Environmental Sciences;

    Sammanfattning : One of the most important areas in climatology today is the development of climate models. To evaluate how well a particular climate model is working it is compared with climate reconstructions based on proxy-data, which is indirect climate information that can be obtained from climate archives. LÄS MER

  7. 20. Automatic Characterisation of Magnetic Indices with Artificial Intelligence

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Veronika Haberle; [2020]
    Nyckelord :artificial intelligence; magnetic indices; magnetically quiet periods; geomagnetic field;

    Sammanfattning : The complex interactions between the Sun and Earth are referred to as Space Weather. Key parameters include magnetic indices which quantitatively describe geomagnetic activity by determining a baseline that removes the background magnetic field and allows quantification of the remaining activity during geomagnetic events. LÄS MER