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  • Halldórsdóttir, Elsa; Kowal, Natalia Magdalena; Olafsdottir, Elin Soffia (Georg Thieme Verlag KG, 2015-07-17)
    The genus Diphasiastrum includes at least 23 species distributed primarily across the northern temperate and subarctic areas of the world. These plants produce an array of lycopodium alkaloids, and some species such as Diphasiastrum complanatum have ...
  • Xu, Maonian; Eiriksson, Finnur Freyr; Thorsteinsdóttir, Margrét; Heiðmarsson, Starri; Omarsdottir, Sesselja; Olafsdottir, Elin Soffia (Elsevier BV, 2019-04)
    The club moss family Lycopodiaceae produces a diverse array of bioactive lycopodium alkaloids (LAs). In particular, the alkaloid huperzine A (hupA) has grasped attention since it is a potent acetylcholinesterase inhibitor of medical interest in Alzheimer's ...
  • Xu, Maonian; Heiðmarsson, Starri; Thorsteinsdóttir, Margrét; Wasowicz, Pawel; Sun, Hang; Deng, Tao; Omarsdottir, Sesselja; Olafsdottir, Elin Soffia (Georg Thieme Verlag KG, 2018-10-05)
    The alkaloids huperzine A and huperzine B were originally isolated from the Chinese club moss Huperzia serrata. They are known inhibitors of acetylcholinesterase, and especially huperzine A shows pharmaceutical potential for the treatment of Alzheimerʼs ...
  • Kowal, Natalia Magdalena; Indurthi, Dinesh; Ahring, Philip; Chebib, Mary; Olafsdottir, Elin Soffia; Balle, Thomas (MDPI AG, 2019-01-27)
    Neurodegenerative disorders, including Alzheimer’s disease, belong to the group of the most difficult and challenging conditions with very limited treatment options. Attempts to find new drugs in most cases fail at the clinical stage. New tactics to ...
  • Magnúsdóttir, Ásdís Rósa (Hugvísindastofnun Háskóla Íslands, 2018-09-05)
    Umfjöllun um undur og ógnir borgarsamfélagsins er að finna í rituðum heimildum af ýmsu tagi og frá öllum tímum. Hér birtist þýðing Ásdísar Rósu Magnúsdóttur á dagbókarbrotum frá París frá tímum hundrað ára stríðsins svokallaða, sem hófst árið 1337. Í ...
  • Garðarsdóttir, Hólmfríður (Hugvísindastofnun Háskóla Íslands, 2018-09-05)
    Einn þekktasti lofsöngur um höfuðborg Íslands, Reykjavík, er án efa kvæðið „Ó borg, mín borg“, eftir Vilhjálm frá Skáholti, sem Haukur Morthens gerði ódauðlegt um miðja síðustu öld. Til að veita því fjölmenningarlega samfélagi sem nú blómstrar á Íslandi ...
  • Garðarsdóttir, Hólmfríður (Hugvísindastofnun Háskóla Íslands, 2018-09-04)
    meðfylgjandi inngangsorðum er hugað að birtingarmyndum borga í sínum óendanlega margbreytileika. Fyrst er brugðið upp tilvitnunum í nýleg skrif lista- og fræðimanna hér á landi þar sem Reykjavík er skipað í öndvegi. Því næst er athyglinni beint að ...
  • Hreinsdóttir, Freyja; Bjarnadóttir, Kristín (Menntavísindasvið Háskóli Íslands, 2016)
    Athugun á niðurstöðum í stærðfræði í PISA-rannsókninni 2003 sýndi að árangur nemenda í tveimur stærstu skólunum var marktækt betri en í minni skólum. Sérstaklega var árangurinn slakur í skólum með 11–25 þátttakendur. Athugun á árangri í dönskum skólum ...
  • Bjarnadóttir, Kristín (Menntavísindasvið Háskóli Íslands, 2016-12-31)
    Landspróf miðskóla sem inntökupróf í menntaskóla og kennaraskóla og síðar fleiri skóla var haldið á árunum 1946–1976. Prófað var í átta námsgreinum þar sem íslenska vó tvöfalt. Landsprófið var upphaflega grundvallað á reglugerð nr. 3/1937 um námsefni ...
  • Yulin, A V; Iorsh, I V; Shelykh, Ivan (IOP Publishing, 2018-05-31)
    We study the structure of the elementary excitations and their propagation in chiral hybrid structure, comprising an array of two-level systems (TLSs) coupled to a one-dimensional photonic waveguide. The chirality is achieved via spin-locking effect, ...
  • Robinson, Sinikka I.; McLaughlin, Órla B.; Marteinsdóttir, Bryndís; O'Gorman, Eoin J. (Wiley, 2018-02-13)
    Global warming is predicted to significantly alter species physiology, biotic interactions and thus ecosystem functioning, as a consequence of coexisting species exhibiting a wide range of thermal sensitivities. There is, however, a dearth of research ...
  • Haldar, Soumyajyoti; von Malottki, Stephan; Meyer, Sebastian; Bessarab, Pavel; Heinze, Stefan (American Physical Society (APS), 2018-08-27)
    We show that stable skyrmions with diameters of a few nanometers can emerge in atomic Pd/Fe bilayers on the Rh(111) surface. Based on density functional theory we calculate the exchange and the Dzyaloshinskii-Moriya interaction as well as the ...
  • Müller, Gideon Philipp; Bessarab, Pavel; Vlasov, Sergei M.; Lux, Fabian; Kiselev, Nikolai S.; Blügel, Stefan; Uzdin, Valery M.; Jónsson, Hannes (American Physical Society (APS), 2018-11-06)
    Various transitions that a magnetic Skyrmion can undergo are found in calculations using a method for climbing up the energy surface and converging onto first order saddle points. In addition to collapse and escape through a boundary, the method ...
  • Vilmundardóttir, Olga Kolbrún; Gísladóttir, Guðrún; Lal, Rattan (Informa UK Limited, 2017-05-24)
    SOC has received increased attention over the last decades because of its role as an option to mitigate the effects of increased anthropogenic greenhouse gas emissions. In Iceland, the loss of vegetation and soil due to land-use and natural processes ...
  • Ågerstrand, Marlene; Christiansen, Sofie; Hanberg, Annika; Rudén, Christina; Andersson, Lars; Andersen, Sjur; Appelgren, Henrik; Bjørge, Christine; Clausen, Ian Henning; Eide, Dag Markus; Hartmann, Nanna B.; Husøy, Trine; Halldórsson, Halldór Pálmar; van der Hagen, Marianne; Ingre-Khans, Ellen; Lillicrap, Adam David; Beltoft, Vibe Meister; Mörk, Anna-Karin; Murtomaa-Hautala, Mari; Nielsen, Elsa; Ólafsdóttir, Kristín; Palomäki, Jaana; Papponen, Hinni; Reiler, Emilie Marie; Stockmann-Juvala, Helene; Suutari, Tiina; Tyle, Henrik; Beronius, Anna (Wiley, 2018-01-03)
    This is a call for action to scientific journals to introduce reporting requirements for toxicity and ecotoxicity studies. Such reporting requirements will support the use of peer‐reviewed research studies in regulatory decision‐making. Moreover, this ...
  • Lemarquis, Andri Leo; Einarsdóttir, Helga K.; Kristjansdóttir, Rakel N.; Jonsdottir, Ingileif; Lúðvíksson, Björn R. (Frontiers Media SA, 2018-04-27)
    Selective IgA deficiency (IgAD) is the most common primary antibody deficiency in the western world with affected individuals suffering from an increased burden of autoimmunity, atopic diseases and infections. It has been shown that IgAD B cells can ...
  • Gudmundsdottir, Helga; Trehub, Sandra (SAGE Publications, 2017-07)
    The present study explored the singing ability of toddlers 16 months to 3 years of age by examining North American adults’ ability to identify toddlers’ renditions of familiar tunes sung with foreign lyrics. After listening to each toddler’s song, ...
  • Arthur, Susanne M.; Zeevaert, Ludger (Western Michigan University, Medieval Institute, 2018-12)
    The article contains a short description of all known manuscripts of Njáls saga.
  • Jónsdóttir, Svanborg R.; Guðjónsdóttir, Hafdís; Gísladóttir, Karen Rut (The Educational Research Institute, 2018-12-21)
    Í greininni er fjallað um sameiginlega hópleiðsögn þriggja leiðbeinenda meistaranema. Tilgangur rannsóknarinnar var að sýna fram á gildi þess að búa til námssamfélag nemenda og kennara um vinnu að meistaraprófsverkefni. Markmið rannsóknarinnar var að ...
  • Hilmarsdóttir, Hafdís Guðrún; Birgisdóttir, Freyja; Gestsdóttir, Steinunn (The Educational Research Institute, 2018-12-21)
    Rannsóknir sýna að lestraráhugahvöt hefur áhrif á ýmsar hliðar lestrarfærni, svo sem umskráningu, lesskilning og orðaforða. Börn með litla lestraráhugahvöt lesa minna en jafnaldrar með meiri lestraráhuga og sterk tengsl eru á milli slakrar lestraráhugahvatar, ...

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