Browsing by Title

Sort by: Order: Results:

  • Benediktsson, Bardi; Þórhallsson, Albert Þ.; Bjornsson, Ragnar (Royal Society of Chemistry (RSC), 2018)
    A new 1.2 Å crystal structure of vanadium nitrogenase, isolated under turnover conditions, recently revealed a light atom ligand (OH or NH) replacing the bridging S2B sulfide of the FeV cofactor. QM/MM calculations on the new structure now reveal the ...
  • Benediktsson, Bardi; Bjornsson, Ragnar (American Chemical Society (ACS), 2017-10-20)
    Nitrogenase is one of the most fascinating enzymes in nature, being responsible for all biological nitrogen reduction. Despite decades of research, it is among the enzymes in bioinorganic chemistry whose mechanism is the most poorly understood. The ...
  • Davis, Stephen M.; Davidov, Danielle; Kristjansson, Alfgeir; Zullig, Keith; Baus, Adam; Fisher, Melanie (Public Library of Science (PLoS), 2018-10-12)
    Background The Central Appalachian region of the United States is in the midst of a hepatitis C virus epidemic driven by injection of opioids, particularly heroin, with contaminated syringes. In response to this epidemic, several needle exchange ...
  • Theodore-Oklota, Christina; Hartman, Deborah S.; Hoffman, Deborah L.; Björnsson, Hans Tómas (2021-11-29)
    Introduction: Kabuki syndrome is a rare congenital condition characterized clinically by unique facial features, abnormalities in the skeleton, finger pad abnormalities, and developmental delays, as well as a range of other health issues. Existing ...
  • Sigurjónsson, Jóhann Örn (University of Iceland, School of Education, Faculty of Education and Pedagogy, 2023-01)
    The doctoral research project underpinning this dissertation was aimed at developing a deeper understanding of cognitive activation in mathematics teaching in Iceland and in a Nordic context through classroom video observations and student perceptions. ...
  • Nwaru, Bright I.; Dierkes, Jutta; Ramel, Alfons; Arnesen, Erik Kristoffer; Thorisdottir, Birna; Lamberg-Allardt, Christel; Söderlund, Fredrik; Bärebring, Linnea; Åkesson, Agneta (2022-07-28)
    Objective: To identify, critically appraise, and synthesize evidence on the effect of quality of dietary fat intake and different classes of fatty acids on the risk of Alzheimer’s disease (AD) and dementia in adults aged ≥50 years. Methods: We searched ...
  • Hempenius, Mirjam; Luijken, Kim; Boer, Anthonius; Klungel, Olaf; Groenwold, Rolf; Gardarsdottir, Helga (Wiley, 2020-05-11)
    Purpose: Exposure definitions vary across pharmacoepidemiological studies. Therefore, transparent reporting of exposure definitions is important for interpretation of published study results. We aimed to assess the quality of reporting of exposure to ...
  • Dürig, Tobias; Guðmundsson, Magnús T.; Dioguardi, Fabio; Schmidt, Louise Steffensen (American Geophysical Union (AGU), 2023-01-13)
    The considerable effects that wind can have on estimates of mass eruption rates (MERs) in explosive eruptions based on volcanic plume height are well known but difficult to quantify rigorously. Many explicitly wind-affected plume models have the ...
  • Turmezei, Thomas; Treece, Graham; Gee, A. H.; Sigurðsson, Sigurður; Jonsson, Helgi; Aspelund, Thor; Gudnason, Vilmundur; Poole, Kenneth E.S. (Springer Science and Business Media LLC, 2020-03-05)
    Osteoarthritis is an increasingly important health problem for which the main treatment remains joint replacement. Therapy developments have been hampered by a lack of biomarkers that can reliably predict disease, while 2D radiographs interpreted by ...
  • Árnadóttir, Íris Dröfn; Piccione, Francesco; Gargiulo, Paolo; Edmunds, Kyle; Magnús Gíslason; Marcante, Andrea (Pagepress Publ, Meditgroup, 2016)
    Medical imaging is of particular interest in the field of translational myology, as extant literature describes the utilization of a wide variety of techniques to non-invasively recapitulate and quantity various internal and external tissue morphologies. ...
  • Turchin, Peter; Currie, Thomas E.; Whitehouse, Harvey; François, Pieter; Feeney, Kevin; Mullins, Daniel; Hoyer, Daniel; Collins, Christina; Grohmann, Stephanie; Savage, Patrick; Mendel-Gleason, Gavin; Turner, Edward; Dupeyron, Agathe; Cioni, Enrico; Reddish, Jenny; Levine, Jill; Jordan, Greine; Brandl, Eva; Williams, Alice; Cesaretti, Rudolf; Krueger, Marta; Ceccarelli, Alessandro; Figliulo-Rosswurm, Joe; Tuan, Po-Ju; Peregrine, Peter; Marciniak, Arkadiusz; Preiser-Kapeller, Johannes; Kradin, Nikolay; Korotayev, Andrey; Palmisano, Alessio; Baker, David; Bidmead, Julye; Bol, Peter; Christian, David; Cook, Connie; Covey, Alan; Feinman, Gary; Júlíusson, Árni Daníel; Kristinsson, Axel; Miksic, John; Mostern, Ruth; Petrie, Cameron; Rudiak-Gould, Peter; ter Haar, Barend; Wallace, Vesna; Mair, Victor; Xie, Liye; Baines, John; Bridges, Elizabeth; Manning, Joseph; Lockhart, Bruce; Bogaard, Amy; Spencer, Charles (Proceedings of the National Academy of Sciences, 2017-12-21)
    Do human societies from around the world exhibit similarities in the way that they are structured, and show commonalities in the ways that they have evolved? These are long-standing questions that have proven difficult to answer. To test between competing ...
  • Akbari, Amir; Yurkovich, James T.; Zielinski, Daniel C.; Pálsson, Bernhard Örn (2021-05-26)
    Living systems formed and evolved under constraints that govern their interactions with the inorganic world. These interactions are definable using basic physico-chemical principles. Here, we formulate a comprehensive set of ten governing abiotic ...
  • Ásgeirsson, Vilhjálmur; Bauer, Christoph A.; Grimme, Stefan (Royal Society of Chemistry (RSC), 2017)
    We introduce a fully stand-alone version of the Quantum Chemistry Electron Ionization Mass Spectra (QCEIMS) program [S. Grimme, Angew. Chem. Int. Ed., 2013, 52, 6306] allowing efficient simulations for molecules composed of elements with atomic numbers ...
  • Alyatkin, S.; Sigurðsson, Helgi; Askitopoulos, A.; Töpfer, J. D.; Lagoudakis, P. G. (2021-09-22)
    One of the recently established paradigms in condensed matter physics is examining a system’s behaviour in artificial potentials, giving insight into phenomena of quantum fluids in hard-to-reach settings. A prominent example is the matter-wave scatterer ...
  • Vlasov, Sergei M. (University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-12)
    Nanomagnetic systems and transitions between magnetic states are currently an active topic of research. Spintronics is, in particular, a new branch of science and technology where spin degrees of freedom and spin currents are used in an analogous way ...
  • Benediktsson, Bardi; Bjornsson, Ragnar (American Chemical Society (ACS), 2020-08-05)
    The nitrogenase enzymes are responsible for all biological nitrogen reduction. How this is accomplished at the atomic level, however, has still not been established. The molybdenum-dependent nitrogenase has been extensively studied and is the most ...
  • Kozin, Valerii; Iorsh, Ivan; Kibis, Oleg; Shelykh, Ivan (American Physical Society (APS), 2018-04-26)
    We developed the theory of electronic properties of semiconductor quantum rings with the Rashba spin-orbit interaction irradiated by an off-resonant high-frequency electromagnetic field (dressing field). Within the Floquet theory of periodically driven ...
  • Banerjee, Souvik; Engelsöy, Julius; Larana-Aragon, Jorge; Sundborg, Bo; Thorlacius, Larus; Wintergerst, Nico (Springer Science and Business Media LLC, 2019-08-01)
    A macroscopic version of Einstein-Podolsky-Rosen entanglement is obtained by quenching a quadratic coupling between two O(N) vector models. A quench of the mixed vacuum produces an excited entangled state, reminiscent of purified thermal equilibrium, ...
  • Guðmundsdóttir Beck, Sólveig (University of Iceland, School of Humanities, Faculty of History and Philosophy, 2020-05)
    Innovations introduced in connection with the New Enterprises in Iceland in the second half of the 18th century have long been considered largely unsuccessful, but a more detailed analysis of the reception of particular innovations has been lacking. ...