Opin vísindi

Browsing by Department "Líf- og umhverfisvísindadeild (HÍ)"

Browsing by Department "Líf- og umhverfisvísindadeild (HÍ)"

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  • Scully, Sean (University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences, 2019-05-31)
    The protein and amino acid metabolism of thermophilic bacteria has been a neglected aspect of their physiology despite its biotechnological potential. Under anaerobic conditions, the metabolism of many proteogenic amino acids requires the presence of ...
  • Palsson, Arnar; Gibson, Greg (Genetics Society of America, 2004-07-01)
    As part of an effort to dissect quantitative trait locus effects to the nucleotide level, association was assessed between 238 single-nucleotide and 20 indel polymorphisms spread over 11 kb of the Drosophila melanogaster Egfr locus and nine relative ...
  • Holt, RE; Woods, PJ; Ferreira, ASA; Bardarson, Hlynur; Bonanomi, S; Boonstra, WJ; Butler, Will E.; Diekert, FK; Fouzai, N; Holma, M; Kokkalis, A; Kvile, KØ; Macdonald, Jed I.; Malanski, E; Nieminen, E; Ottosen, KM; Pedersen, MW; Richter, A; Rogers, L; Romagnoni, G; Snickars, M; Törnroos, A; Weigel, B; Whittington, JD; Yletyinen, J (Inter-Research Science Center, 2017-12-27)
    As the world’s social-environmental problems increasingly extend across boundaries, both disciplinary and political, there is a growing need for interdisciplinarity, not only in research per se, but also in doctoral education. We present the common ...
  • Arason, Ari Jon; Jóelsson, Jón Pétur; Valdimarsdóttir, Bryndís; Sigurdsson, Snaevar; Guðjónsson, Alexander; Halldorsson, Skarphedinn; Jóhannsson, Freyr; Rolfsson, Óttar; Lehmann, Fredrik; Ingthorsson, Saevar; Cherek, Paulina; Gudmundsson, Gudmundur H; Garðarsson, Friðrik R.; Page, Clive P.; Baldursson, Ólafur; Gudjonsson, Thorarinn; Kricker, Jennifer (Springer Science and Business Media LLC, 2019-06-24)
    BACKGROUND: Azithromycin (Azm) is a macrolide recognized for its disease-modifying effects and reduction in exacerbation of chronic airway diseases. It is not clear whether the beneficial effects of Azm are due to its anti-microbial activity or other ...
  • Schmid, Magdalena Maria E; Zori, Davide; Erlendsson, Egill; Batt, Cathy; Damiata, Brian N; Byock, Jesse (SAGE Publications, 2017-06-22)
    Icelandic settlement (Landnám) period farmsteads offer opportunities to explore the nature and timing of anthropogenic activities and environmental impacts of the first Holocene farming communities. We employ Bayesian statistical modelling of archaeological, ...
  • Yi, Zhiqian (University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences, 2018-11-30)
    Diatoms are a major group of algae in the phytoplankton community and can be found in waters worldwide wherever sufficient nutrients and lights are present. Marine diatoms, such as Phaeodactylum tricornutum, can accumulate high levels of lipids and ...
  • Macdonald, Jed I.; Logemann, Kai; Krainski, Elias T.; Sigurðsson, Þorsteinn; Beale, Colin M.; Huse, Geir; Hjøllo, Solfrid S.; Marteinsdóttir, Guðrún (Wiley, 2017-09-13)
    Social learning can be fundamental to cohesive group living, and schooling fishes have proven ideal test subjects for recent work in this field. For many species, both demographic factors, and inter‐ (and intra‐) generational information exchange are ...
  • Kreiling, Agnes-Katharina; Olafsson, Jon S.; Palsson, Snaebjorn; Kristjansson, Bjarni K. (PAGEPress Publications, 2018-05-31)
    In 1937, S.L. Tuxen studied the animal community of hot springs in Iceland, and classified springs according to their relative temperature into cold, tepid, and hot. Eighty years after Tuxen’s study, we revisited some of the hot springs in Skagafjörður, ...
  • Cooper, Elizabeth Ann; Spinei, Michelle; Varnajot, Alix (Emerald, 2019-12-18)
    Purpose – The purpose of this paper is to focus on the Sourtoe Cocktail, a custom in Dawson City, Canada’s Yukon, in which participants drink a shot of alcohol with a dehydrated human toe in it. Springing from a local legend, the thrill-inducing ...
  • Knobloch, Stephen; Jóhannsson, Ragnar; Marteinsson, Viggó (Springer Science and Business Media LLC, 2019-07-18)
    Marine sponges host bacterial symbionts with biotechnological potential, yet isolation of true sponge symbionts remains difficult due to their host dependency. Moreover, attempts to grow sponges for their pharmacologically-active compounds outside of ...
  • Káradóttir, Harpa; Nikhil Nitin, Kulkarn; Guðjónsson, Þórarinn; Karason, Sigurbergur; Guðmundsson, Guðmundur Hrafn (PeerJ, 2015-12-07)
    Mechanical ventilation (MV) of patients can cause damage to bronchoalveolar epithelium, leading to a sterile inflammatory response, infection and in severe cases sepsis. Limited knowledge is available on the effects of MV on the innate immune defense ...
  • Danner, Ragnar Ingi; Mankasingh, Utra; Anamthawat-Jonsson, Kesara; Thorarinsdottir, Ragnheidur (MDPI AG, 2019-10-13)
    Aquaponics is a sustainable method of food production, whereby aquaculture and hydroponics are combined in one circular system. A few aquaponics startup companies are emerging in Europe with a limited production area of a few hundred or a few thousand ...
  • Guðbrandsson, Jóhannes; Pashay Ahi, Ehsan; Franzdottir, Sigridur Rut; Kapralova, Kalina; Kristjansson, Bjarni K.; Steinhäuser, Sophie S.; Maier, Valerie H.; Johannesson, Isak M.; Snorrason, Sigurdur S.; Jonsson, Zophonias O.; Palsson, Arnar (F1000 Research, Ltd., 2016-12-02)
    Species and populations with parallel evolution of specific traits can help illuminate how predictable adaptations and divergence are at the molecular and developmental level. Following the last glacial period, dwarfism and specialized bottom feeding ...
  • Kvaavik, Cecilia; Oskarsson, Gudmundur; Daníelsdóttir, Anna Kristín; Marteinsdottir, Gudrun (Public Library of Science (PLoS), 2019-12-30)
    Predator-prey relations, as well as the trophic ecology of highly migratory marine species, is important to understand their impact on the ecosystem. Conventional methods were used to study the diet composition and feeding strategy of the Northeast ...
  • Pashay Ahi, Ehsan; Steinhäuser, Sophie S.; Palsson, Arnar; Franzdottir, Sigridur Rut; Snorrason, Sigurdur S.; Maier, Valerie H.; Jónsson, Zophonías Oddur (Springer Nature, 2015-09-16)
    Background The developmental basis of craniofacial morphology hinges on interactions of numerous signalling systems. Extensive craniofacial variation in the polymorphic Arctic charr, a member of the salmonid family, from Lake Thingvallavatn (Iceland), ...
  • Guðbrandsson, Jóhannes; Franzdottir, Sigridur Rut; Kristjansson, Bjarni K.; Pashay Ahi, Ehsan; Maier, Valerie H.; Kapralova, Kalina; Snorrason, Sigurdur S; Jónsson, Zophonías Oddur; Palsson, Arnar (PeerJ, 2018-02-07)
    Phenotypic differences between closely related taxa or populations can arise through genetic variation or be environmentally induced, leading to altered transcription of genes during development. Comparative developmental studies of closely related ...
  • Kapralova, Kalina; Guðbrandsson, Jóhannes; Reynisdottir, Sigrun; Santos, Cristina B.; Baltanás, Vanessa C; Maier, Valerie H. untranslated; Snorrason, Sigurdur S.; Palsson, Arnar (Public Library of Science (PLoS), 2013-07-24)
    Northern freshwater fish may be suitable for the genetic dissection of ecological traits because they invaded new habitats after the last ice age (∼10.000 years ago). Arctic charr (Salvelinus alpinus) colonizing streams and lakes in Iceland gave rise ...
  • Keighley, Xénia; Palsson, Snaebjorn; Einarsson, Bjarni F; Petersen, Ævar; Fernández-Coll, Meritxell; Jordan, Peter; Olsen, Morten Tange; Malmquist, Hilmar (Oxford University Press (OUP), 2019-09-12)
    There is a growing body of evidence demonstrating the impacts of human arrival in new “pristine” environments, including terrestrial habitat alterations and species extinctions. However, the effects of marine resource utilization prior to industrialized ...
  • Gagunashvili, Andrey; Andrésson, Ólafur (Springer Nature, 2018-06-05)
    Background Cyanobacteria of the genus Nostoc are capable of forming symbioses with a wide range of organism, including a diverse assemblage of cyanolichens. Only certain lineages of Nostoc appear to be able to form a close, stable symbiosis, raising ...
  • Mankasingh, Utra; Gísladóttir, Guðrún (Elsevier BV, 2019-03-01)
    Andisols are carbon-rich soils that persist in volcanic regions with cool climates. They are the main soil type in Iceland, where there are also large areas of premature or degraded mineral soils with the possible potential to become andisols. This ...