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  • 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 ...
  • 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 ...
  • 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 ...
  • 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. ...
  • 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 ...
  • Abdullah, Nzar Rauf (Elsevier BV, 2019-12)
    The transport properties of a wire-dot system coupled to a quantized single photon with linear polarization in a 3D-cavity is theoretically studied using a quantum master equation. The system is also coupled to a photon reservoir, environment. We ...
  • Ásgeirsson, Árni; Kristjansson, Arni (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 ...
  • Ludyga, Sebastian; Koutsandréou, Flora; Reuter, Eva-Maria; Voelcker-Rehage, Claudia; Budde, Henning (MDPI AG, 2019-02-04)
    Whereas aerobic training has found to be beneficial for inhibitory control, less is known on the efficiency of other exercise types in children. The present study compared the effects of aerobic and coordinative training on behavioral and neurophysiological ...
  • 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 ...
  • Interrante, Mary K.; Segal, Hannah; Peshkin, Beth N.; Valdimarsdottir, Heiddis; Nusbaum, Rachel; Similuk, Morgan; DeMarco, Tiffani; Hooker, Gillian; Graves, Kristi; Isaacs, Claudine; Wood, Marie; McKinnon, Wendy; Garber, Judy; McCormick, Shelley; Heinzmann, Jessica; Kinney, Anita Y.; Schwartz, Marc D. (Oxford University Press (OUP), 2017-09-01)
    Background: Telephone delivery of genetic counseling is an alternative to in-person genetic counseling because it may extend the reach of genetic counseling. Previous reports have established the noninferiority of telephone counseling on short-term ...
  • Pogge von Strandmann, Philip A. E.; Burton, Kevin W.; Snæbjörnsdóttir, Sandra Ósk; Sigfússon, Bergur; Aradóttir, Edda S.; Gunnarsson, Ingvi; Alfreðsson, Helgi A.; Mesfin, Kiflom G.; Oelkers, Eric H.; Gíslason, Sigurður Reynir (Springer Science and Business Media LLC, 2019-04-30)
    The engineered removal of atmospheric CO 2 is now considered a key component of mitigating climate warming below 1.5 °C. Mineral carbonation is a potential negative emissions technique that, in the case of Iceland’s CarbFix experiment, precipitates ...
  • Chetverikov, Andrey; Campana, Gianluca; Kristjansson, Arni (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; Sveinbjornsson, Gardar; 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; Ludviksson, Bjorn; 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 ...