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Browsing Doktorsritgerðir- HÍ by School "School of Engineering and Natural Sciences (UI)"

Browsing Doktorsritgerðir- HÍ by School "School of Engineering and Natural Sciences (UI)"

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  • Aufaristama, Muhammad (University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2020-04-29)
    The purpose of this thesis is to employ remote sensing to study lava flow products during the 2014-2015 eruption at Holuhraun, Iceland. Multimodal remote sensing techniques and datasets were applied and developed for three study themes (1) deriving ...
  • Müller, Gideon Philipp (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2019-09-02)
    An active field of research in magnetism today involves studies of solitons -- localised magnetic textures possessing particle-like properties. They are considered promising for various applications but are also intriguing from a fundamental point of ...
  • Saha, Subham (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-06)
    Electron paramagnetic resonance (EPR) spectroscopy is routinely used to study the structure and dynamics of nucleic acids, to obtain information about their functions. A prerequisite for most EPR studies of nucleic acids is the incorporation of ...
  • Júlíusson, Haraldur Yngvi (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2020-02-01)
    Rafeindasegullitrófsgreiningu (e. Electron Paramagnetic Resonance, EPR) er reglubundið beitt í rannsóknum á byggingu og hreyfingu kjarnsýra til að fá upplýsingar um starfsemi þeirra og hlutverk. Innleiðing meðseglandi kjarna á ákveðinn stað í kjarnsýrum ...
  • Koistinen, Olli-Pekka (Aalto University School of Science, 2019)
    Chemical reactions and other transitions involving rearrangements of atoms can be studied theoretically by analyzing a potential energy surface defined in a high-dimensional space of atom coordinates. Local minimum points of the energy surface correspond ...
  • Scully, Sean (University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences, 2019-05-31)
    The protein and amino acid metabolism of thermophilic bacteria has been a neglected aspect of their physiology despite its biotechnological potential. Under anaerobic conditions, the metabolism of many proteogenic amino acids requires the presence of ...
  • Rahpeyma, sahar (University of Iceland, School of Engineering and Natural Sciences, Faculty of Civil and Environmental Engineering, 2018-11-23)
    A comprehensive site-effect investigation framework was developed and applied to earthquake strong-motion data collected on small-aperture urban arrays, the ICEARRAY I in Hveragerði in the South Iceland Seismic Zone and ICEARRAY II in Húsavík in the ...
  • Barry, Tom (University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences, 2021-01-28)
    The geo-political importance of the Arctic is growing while at the same time the onset of climate change has resulted in increasing environmental and social pressures both on Arctic states and the governance architecture through which Arctic issues ...
  • Reichardt, Uta (University of Iceland, School of Engineering and Natural Sciences, Faculty of of Civil and Environmental Engineering, 2018-05-04)
    International aviation guidelines suggest complete avoidance of ash-contaminated airspace due to its hazardous impact on aircrafts and jet engines. In 2010, however, the eruption of the Eyjafjallajökull volcano memorably demonstrated the limits of this ...
  • Ghosh, Dipankar (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2020)
    Nature has been successful in self-assembling simple building blocks to complex functional architectures and the concept of supramolecular chemistry has enabled chemists to mimic nature's self-assembly principles. The understanding of the assembly/reassembly ...
  • Guðjónsdóttir, María Sigríður (2016-01)
    Liquid dominated reservoirs are a common type of hydrothermal reservoirs. They consist of fractured rock and reservoir fluid which may obey Darcy’s law. Steam can form in such reservoirs either through heat input which causes temperature increase or ...
  • Klarenberg, Ingeborg J. (University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences, 2021-10)
    Climate warming in sub-Arctic regions leads to shifts in plant communities and retreating glaciers. Mosses and lichens contribute to important ecosystem processes in these environments, including nitrogen fixation via their microbiome. The first objective ...
  • Mandal, Sucharita (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2020-12-15)
    Dynamic nuclear polarization (DNP) has emerged as an important technique to enhance the signal intensity of nuclear magnetic resonance (NMR) spectroscopy by transferring spin polarization from unpaired electrons to nuclei of interest. Persistent organic ...
  • Marteinsdóttir, María (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2021-04)
    Application of external beam radiation therapy (EBRT) to localized cancer has long been regarded as a standard treatment option with its purpose being to deliver a ho- mogeneous high-dose distribution within the tumor volume while protecting organs at ...
  • Yi, Zhiqian (University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences, 2018-11-30)
    Diatoms are a major group of algae in the phytoplankton community and can be found in waters worldwide wherever sufficient nutrients and lights are present. Marine diatoms, such as Phaeodactylum tricornutum, can accumulate high levels of lipids and ...
  • Askew, Robert Alexander (University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2020-01)
    The Breiðdalur volcanic system, eastern Iceland, comprises of a ~600 km3 central volcano, a 30 - 40 km long dyke swarm and plateau basalts erupted from this dyke swarm. The entire volcanic system was active from 10.1 to 7.8 Ma, the central volcano was ...
  • Egilsdottir, Hronn (University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2017-02-08)
    Anthropogenic CO2 emissions, which are resulting in ocean acidification and a decrease in the saturation state for calcium carbonate (Ω), are a particular threat to calcifying marine biota. The aim of this thesis is to fill important knowledge gaps ...
  • Ivanov, Aleksei (2021-04-09)
    Direct optimization methods for the calculation of ground and excited electronic states are presented for both total density and orbital-density-dependent functionals. The methods have been developed for various types of basis sets including localized ...
  • Shahnazaryan, Vanik (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-10)
    The physics of light-matter interactions is a rapidly developing interdisciplinary research area, combining methods and phenomena both from condensed matter physics and quantum optics. One of the most common realizations of strong coupling regime implies ...
  • Natugonza, Vianny (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2020-06-18)
    The advent of ecosystem-based fisheries management (EBFM) in recent years has expanded the scope of fisheries management, where policies are aimed not only at maximizing production (or biological yield) but also maintaining an optimal balance between ...