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 ...
  • Árnadottir, 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Jónasson, Jón Torfi; Óskarsdóttir, Gunnhildur (2015)
    Abstract This paper investigates the importance for pupils’ learning of being generally visibly active participant in a classroom discussion. A class of six year-old pupils was taught about the human skeletal system and other organs. To determine ...
  • Erlendsdóttir, Erla (Stofnun Vigdísar Finnbogadóttur í erlendum tungumálum, 2016)
    Orð af norrænum uppruna, einkum orð sem lúta að skipasmíði og siglingum, voru á sínum tíma tekin upp í normandísku þaðan sem þau bárust inn í frönsku sem miðlaði þeim aftur á móti til annara rómanskra tungumála, til að mynda spænsku. Má hér nefna ...
  • Ásgeirsson, Árni; Kristjánsson, Árni (Frontiers Media SA, 2014-04-10)
    Consistent financial reward of particular features influences the allocation of visual attention in many ways. More surprising are 1-trial reward priming effects on attention where reward schedules are random and reward on one trial influences attentional ...
  • Young, Susan; Emilsson, Brynjar; Sigurdsson, Jon Fridrik; Khondoker, Mizanur; Philipp-Wiegmann, Florence; Baldursson, Gísli; Ólafsdóttir, Halldóra; Gudjonsson, Gisli (Springer Nature, 2016-10-17)
    Studies assessing psychological treatment of attention deficit hyperactivity disorder (ADHD) in adults are increasingly reported. However, functional outcomes are often neglected in favour of symptom outcomes. We investigated functional outcomes in 95 ...
  • Chetverikov, Andrey; Campana, Gianluca; Kristjánsson, Árni (Association for Research in Vision and Ophthalmology (ARVO), 2017-02-28)
    We recently demonstrated that observers are capable of encoding not only summary statistics, such as mean and variance of stimulus ensembles, but also the shape of the ensembles. Here, for the first time, we show the learning dynamics of this process, ...
  • Smith, Dirk; Helgason, Hannes; Sulem, Patrick; Björnsdóttir, Unnur Steina; Lim, Ai Ching; Sveinbjörnsson, Garðar; Hasegawa, Haruki; Brown, Michael; Ketchem, Randal R.; Gavala, Monica; Garrett, Logan; Jónasdóttir, Aðalbjörg; Jónasdóttir, Áslaug; Sigurðsson, Ásgeir; Magnússon, Ólafur T.; Eyjólfsson, Guðmundur I.; Ólafsson, Ísleifur; Önundarson, Páll Torfi; Sigurðardóttir, Ólöf; Gíslason, Davíð; Gíslason, Þórarinn; Lúðvíksson, Björn Rúnar; Lúðvíksdóttir, Dóra; Boezen, H. Marike; Heinzmann, Andrea; Krueger, Marcus; Porsbjerg, Celeste; Ahluwalia, Tarunveer S.; Waage, Johannes; Backer, Vibeke; Deichmann, Klaus A.; Koppelman, Gerard H.; Bønnelykke, Klaus; Bisgaard, Hans; Másson, Gísli; Thorsteinsdottir, Unnur; Gudbjartsson, Daniel; Johnston, James A.; Jonsdottir, Ingileif; Stefansson, Kari (Public Library of Science (PLoS), 2017-03-08)
    IL-33 is a tissue-derived cytokine that induces and amplifies eosinophilic inflammation and has emerged as a promising new drug target for asthma and allergic disease. Common variants at IL33 and IL1RL1, encoding the IL-33 receptor ST2, associate with ...
  • Sigfusson, Bergur (University of Aberdeen, Aberdeen, 2009)
    This thesis studied the volcanic and geothermal source of arsenic (As) and its fate in shallow ground waters and upon entering the ocean by means of experimental and field measurements combined with geochemical modeling. Arsenic enters the atmosphere ...
  • Perkin, Samuel (2018-02)
    Power system operation is concerned with supplying electricity to society in a reliable manner. Reliability has traditionally been managed through use of the deterministic N-1 criterion. The EU FP7 GARPUR research project proposes that Transmission ...
  • Ottelin, Juudit (Unigrafia, Helsinki, 2016-11)
    Climate change mitigation in the built environment encompasses various mitigation measures, such as energy efficient buildings, spatial planning instruments and other policies targeting the emissions resulting from transport. However, studies on the ...
  • Scully, Sean; Orlygsson, Johann (MDPI AG, 2014-12-24)
    There is an increased interest in using thermophilic bacteria for the production of bioethanol from complex lignocellulosic biomass due to their higher operating temperatures and broad substrate range. This review focuses upon the main genera ...
  • McKelvey, Maureen; Saemundsson, Rognvaldur; Zaring, Olof (Oxford University Press (OUP), 2018-01-19)
    This article focuses upon issues that public policy makers need to address, when trying to stimulate world-leading research into new areas, which are potentially also valuable to solving societal challenges. Our analysis helps contribute to the theoretical ...
  • Koziel, Slawomir; Bekasiewicz, Adrian (Walter de Gruyter GmbH, 2015-09-23)
    This paper addresses computationally feasible multi-objective optimization of antenna structures. We review two recent techniques that utilize the multi-objective evolutionary algorithm (MOEA) working with fast antenna replacement models (surrogates) ...