Doktorsritgerðir- HÍ: Recent submissions

  • Costa, Maria Sofia (University of Iceland, School of Health Sciences, Faculty of Pharmaceutical Sciences, 2019-06)
    In the course of a nearly century-long global effort to discover new bacterialderived drugs from the environment, there have been few innovations to the way that researchers have collected samples and subsequently created microbial libraries sourced ...
  • Bjarnason, Thorarinn Arni (University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-06)
    Sykursýki 2 (SS2) og forstig SS2 eru þekktir áhættuþættir æðakölkunar og alvarlegra fylgikvilla hjarta- og æðasjúkdóma. Skimun sjúklinga með brátt kransæðaheilkenni (BKH) með sykurþolsprófi hefur gefið til kynna hátt algengi ógreindrar SS2 og forstigs ...
  • 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 ...
  • Þórðardóttir, Maríanna (University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-02)
    Background and aim: Multiple myeloma is a malignant chronic B-cell disorder characterized by a monoclonal proliferation of plasma cells in the bone marrow. Almost all multiple myeloma cases are preceded by the premalignant state, monoclonal gammopathy ...
  • Hermanowicz, Stefan (University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-05)
    The DNA damage response is crucial to maintaining the integrity of DNA and the health of a cell. Unrepaired lesions within the DNA can lead to genomic instability and potentially aid in the formation of diseases such as cancer. Some cancers possess ...
  • Knobloch, Stephen (University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences, 2019-05)
    Sponges (phylum Porifera) are considered one of the oldest extant lineages of the animal kingdom. Their close association with microorganism makes them suitable for studying early animal-microbe symbiosis and expanding our understanding of host-microbe ...
  • Lévy, Léa (Paris Sciences et Lettres, Laboratoire de Géologie de l'Ecole Normale Supérieure and University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2019-04)
    The electrical signature of volcanoes is affected by several characteristics of rocks: volume and salinity of pore fluid, abundance of conductive minerals, rock temperature and presence of molten crust (magma). Electromagnetic soundings are widely used ...
  • Hálfdánarson, Óskar (University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-03-08)
    Background and aims: Proton pump inhibitors (PPIs) are commonly prescribed drugs that are used to treat acid-related disorders of the gastrointestinal tract. Over the last decade, PPI use has repeatedly been shown to be increasing worldwide, causing ...
  • Asgeirsdottir, Hildur Gudny (University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-02-08)
    Bakgrunnur og markmið: Meirihluti einstaklinga upplifir streitu og áföll á ævinni. Streita og áföll hafa í för með sér aukna áhættu á geðröskunum sem geta leitt til alvarlegri útkoma, eins og aukinnar áhættu á sjálfsvígshugsum sjálfsskaða, ...
  • Quirk, Sigríður Júlía (University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-04)
    The pneumococcus is a major human pathogen that causes morbidity and mortality worldwide. Pneumococci are normally carried asymptomatically in the nasopharynx of healthy pre-school children. Pneumococcal infections can range from acute otitis media ...
  • Ágústsson, Atli (University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-04-24)
    Introduction: Adult individuals with disability and low motor function frequently have body deformations, such as scoliosis and windswept hips. Posture management is a component of physical management, which aims to prevent or reduce the development ...
  • Ballesteros Álvarez, Josué A (University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-01-10)
    The MITF, TFEB, TFE3 and TFEC (MiT-TFE) proteins belong to a larger family of basic helix-loop-helix leucine zipper transcription factors that are able to bind DNA and regulate gene expression. MITF is crucial for melanocyte development and has been ...
  • Snæbjarnarson, Auðunn (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2019-03-29)
    The first main theme of this thesis is the approximation of holomorphic functions on Stein manifolds by polynomials. In our setting a polynomial is an entire function whose absolute value is bounded from above by $\exp(a\psi+b)$ on the complement of a ...
  • Guðbrandsson, Jóhannes (University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences, 2019-04-26)
    The four morphs of Arctic charr (Salvelinus alpinus) in Lake Þingvallavatn, Iceland, which differ in many phenotypic traits related to morphology, life history, and feeding ecology, are believed to have evolved locally within the lake after the retreat ...
  • Schmidt, Louise Steffensen (University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2019)
    This dissertation describes the research results from applying regional climate models (RCMs) to simulate the near-past and future evolution of Vatnajökull, the largest ice cap in Iceland, and investigate the sensitivity of ablation to albedo and spring ...
  • Baldursdottir, Bergthora (University of Iceland, School of Health Sciences, Faculty of Medicine, 2019-03)
    Aims: The aim of this thesis was to evaluate the effects of a new multi-sensory balance training program: the “Reykjavik Model” among unsteady older adults as well as middle aged and elderly people with wrist fractures. Additionally, to explore the ...
  • Harning, David (University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2019-04)
    Iceland’s position at the confluence of major oceanic and atmospheric fronts results in a highly sensitive climate evident in both instrumental and paleo records. However, open questions still remain regarding the pre-instrumental evolution of climate, ...
  • Sandholt, Gunnar Birgir (University of Iceland, School of Health Sciences, Faculty of Food Science and Nutrition, 2019-02)
    The aim of the thesis work was to identify and characterise different trypsin isoenzymes from a benzamidine-purified Atlantic cod (Gadus morhua) trypsin isolate. Another aim was to test the ability of cod trypsin to deactivate upper respiratory tract ...
  • Swift, Emma Marie (University of Iceland, School of Health Sciences, Faculty of Nursing, 2019-01-30)
    Background: The importance of promoting and protecting the normal physiologic processes of childbirth is supported by decades of research. Despite this, the use of obstetric interventions has increased rapidly over the past years. Hence, finding an ...
  • Beck, Samantha V. (University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences, 2019-01-30)
    Intraspecific variation in egg size and its effects on offspring fitness is well documented in fishes. Yet whether or not differential per propagule maternal investment (egg size) can influence phenotypic diversification is little understood. Arctic ...