Opin vísindi: Síðast bætt við

  • 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 ...
  • Jónsdóttir, Kristín (European Network about Parents in Education, 2015)
    Students’ voices in research on parental involvement in schools are rather weak since many studies report only on opinions of parents and school personnel. This paper draws on findings from a study in 14 compulsory schools and uses data from ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Jóhannesson, Ingólfur Ásgeir (Rannsóknarstofa í kvenna- og kynjafræðum, 2004)
    Á undanförnum árum hefur umræða um stöðu drengja í skólum verið nokkur og þeirri skoðun vaxið fiskur um hrygg að þeir eigi undir högg að sækja. Í þessari bók eru fræðilegar kenningar og rannsóknir nýttar til þess að leggja fram raunhæfar tillögur um ...
  • Sævarsson, Elvar Smári (University of Iceland, 2018-11)
    Background: The academic performance of children has been correlated with their future educational attainment and health and has therefore been viewed as a public health concern. Physical activity and cardiorespiratory fitness are known to exert many ...
  • Terada, Hiroe (University of Iceland, 2017-01)
    At preschool, children are socially active--they engage in various social interactions with their peers and teachers. Social interactions require people to understand others’ minds (e.g., perspectives, ideas, emotional states, thoughts, intentions, ...
  • Jónsdóttir, Kristín (University of Iceland, 2018-06)
    Þessi rannsókn fjallar um tengsl heimila og grunnskóla og markmið hennar var þríþætt: Í fyrsta lagi að lýsa því sem er einkennandi fyrir samskipti heimila og skóla, samstarf foreldra og kennara, og fyrir þátttöku foreldra í skólastarfi. Í öðru lagi ...
  • Stefánsson, Kristján K. (Univeristy of Iceland, 2017-05)
    The importance of school engagement (i.e., the willingness to engage in learning) for school success, such as good academic achievement and low dropout rates, has been well established. At the same time, intentional selfregulation (ISR; i.e., the ...
  • 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 ...