Greinar- HÍ

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Recent Submissions

  • Foxler, Daniel E.; Bridge, Katherine S.; James, Victoria; Webb, Thomas M.; Mee, Maureen; Wong, Sybil C. K.; Feng, Yunfeng; Constantin-Teodosiu, Dumitru; Petursdottir, Thorgunnur Eyfjord; Bjornsson, Johannes; Ingvarsson, Sigurður; Ratcliffe, Peter J.; Longmore, Gregory D.; Sharp, Tyson V. (Springer Nature, 2012-01-29)
    There are three prolyl hydroxylases (PHD1, 2 and 3) that regulate the hypoxia-inducible factors (HIFs), the master transcriptional regulators that respond to changes in intracellular O(2) tension. In high O(2) tension (normoxia) the PHDs hydroxylate ...
  • Guðmundsdóttir, Petra Landmark; Andrésson, Ólafur (Agricultural University of Iceland, 2019)
    Fungal distribution in a liverwort-based biocrust was examined at different depths (0, 5 and 20 mm) by direct counting using both light and fluorescence microscopy. The DNA-based taxonomic composition of fungi was also determined and differences between ...
  • Guðmundsdóttir, Sigríður; Vendramin, Niccoló; Cuenca, Argelia; Sigurðardóttir, Heiða; Kristmundsson, Árni; Iburg, Tine Moesgaard; Olesen, Niels Jørgen (Wiley, 2018-11-05)
    A novel viral haemorrhagic septicaemia virus (VHSV) of genotype IV was isolated from wild lumpfish (Cyclopterus lumpus), brought to a land-based farm in Iceland, to serve as broodfish. Two groups of lumpfish juveniles, kept in tanks in the same facility, ...
  • Tryggvason, Eysteinn (Hið íslenzka náttúrufræðifélag, 1959)
    During this period, three seismograph stations were operated in Iceland, at Reykjavík, Akureyri and Vík. A new seismograph station was erected at Kirkjubæjarklaustur (Síða) in 1958, where one vertical Willmore seismograph is operated. The seismic ...
  • Tryggvason, Eysteinn (Hið íslenzka náttúrufræðifélag, 1956)
    The seismograph station at Reykjavik was operated with three short period Sprengnether seismographs during these years. New stations were erected at Akureyri (65°40.3' N, 18°06.0' W) and at Vík (63°25.3' N, 19°01.0' W). At both these stations, one ...
  • Tryggvason, Eysteinn (Hið íslenzka náttúrufræðifélag, 1954)
    The seismic activity was relatively low in Iceland during this year. No large shock occurred, and no damage was done by earthquakes. The largest shock came on February 10th, with epicenter off the north coast (about 66°40'N, 17°0'W), origin time l ...
  • Björnsson, Sveinbjörn (Hið íslenzka náttúrufræðifélag, 1976)
    Larger earthquakes in Iceland occur mainly in two zones, a narrow E-W trending zone in S-Iceland and 75 km broad zone off the northern coast. Destruction and ground displacement due to the earthquake sequences of J784 (Ms 7.5-8), 1896 Mg 7-7.5) and ...
  • Iordache, Paul; Mates, Dana; Gunnarsson, Bjarni; Eggertsson, Hannes Pétur; Sulem, Patrick; Benonisdottir, Stefania; Csiki, Irma Eva; Rascu, Stefan; Radavoi, Daniel; Ursu, Radu; Staicu, Catalin; Calota, Violeta; Voinoiu, Angelica; Jinga, Mariana; Rosoga, Gabriel; Danau, Razvan; Sima, Sorin Cristian; Badescu, Daniel; Suciu, Nicoleta; Radoi, Viorica; Mates, Ioan Nicolae; Dobra, Mihai; Nicolae, Camelia; Kristjansdottir, Sigrun; Jónasson, Jón G.; Manolescu, Andrei; Arnadottir, Gudny; Jensson, Brynjar; Jonasdottir, Aslaug; Sigurdsson, Asgeir; le Roux, Louise; Johannsdottir, Hrefna; Thorsteinsdottir, Thorunn Rafnar; Halldorsson, Bjarni V.; Jinga, Viorel; Stefansson, Kari (Wiley, 2018-10-16)
    Two familial forms of colorectal cancer (CRC), Lynch syndrome (LS) and familial adenomatous polyposis (FAP), are caused by rare mutations in DNA mismatch repair genes (MLH1, MSH2, MSH6, PMS2) and the genes APC and MUTYH, respectively. No information ...
  • Dürig, Tobias; Gudmundsson, Magnus Tumi; Dioguardi, Fabio; Woodhouse, Mark; Björnsson, Halldór; Barsotti, Sara; Witt, Tanja; Walter, Thomas R. (Elsevier BV, 2018-07)
    Meaningful forecasting of the atmospheric concentration and ground accumulation of volcanic ash during explo-sive eruptions requires detailed knowledge of the eruption source parameters. However, due to the large uncer-tainties in observations and ...
  • Lévy, L; Gibert, B; Sigmundsson, Freysteinn; Flóvenz, Ólafur G.; Hersir, Gylfi; Briole, P; Pezard, PA (Oxford University Press (OUP), 2018-08-18)
    The underground circulation of hot water, of interest for geothermal energy production, is often indirectly inferred from the presence of minerals formed by hydrothermal alteration at different temperatures. Clay minerals, such as smectite and chlorite, ...
  • Palsson, Frosti; Sveinsson, Jóhannes Rúnar; Ulfarsson, Magnus (MDPI AG, 2018-08-15)
    Single sensor fusion is the fusion of two or more spectrally disjoint reflectance bands that have different spatial resolution and have been acquired by the same sensor. An example is Sentinel-2, a constellation of two satellites, which can acquire ...
  • Cui, Guoqing; Lv, Zhiyong; Li, Guangfei; Benediktsson, Jon Atli; Lu, Yudong (MDPI AG, 2018-08-07)
    Land cover classification that uses very high resolution (VHR) remote sensing images is a topic of considerable interest. Although many classification methods have been developed, the accuracy and usability of classification systems can still be improved. ...
  • Ma, Q; Ciardi, B; Eide, M B; Helgason, Kári (Oxford University Press (OUP), 2018-07-09)
    We use high-resolution hydrodynamical simulations to study the contribution to the X-ray background from high-z energetic sources, such as X-ray binaries, accreting nuclear black holes, and shock heated interstellar medium. Adopting the model discussed ...
  • Czepkiewicz, Michał; Jankowski, Piotr; Zwoliński, Zbigniew (Walter de Gruyter GmbH, 2018-09-01)
    Geo-questionnaires have been used in a variety of domains to collect public preferences, behavioural patterns, and spatially-explicit local knowledge, for academic research and environmental and urban planning. This paper provides an overview of the ...
  • Thordarson, Thorvaldur; Garcia, Michael O. (Frontiers Media SA, 2018-09-04)
    The origin of rejuvenated volcanism on mantle plume related oceanic islands remains controversial. One commonly cited model is decompressional melting related to plate flexure from the rapid loading of the lithosphere by the formation of a shield ...
  • Boreham, Frances; Cashman, Katharine; Rust, Alison; Höskuldsson, Ármann (Elsevier BV, 2018-09)
    It is well established that rootless cones and associated deposits are the result of explosive interactions between lava flows and environmental water, but there is substantial uncertainty about the dynamics of rootless eruptions, particularly the ...
  • Elm Heintz, Kasper; Watson, D; Jakobsson, Pall; Fynbo, J P U; Bolmer, J; Arabsalmani, M; Cano, Zach; Covino, S; D’Elia, V; Gomboc, A; Japelj, J; Kaper, L; Krogager, J-K; Pugliese, G; Sánchez-Ramírez, R; Selsing, J; Sparre, M; Tanvir, N R; Thöne, C C; de Ugarte Postigo, A; Vergani, S D (Oxford University Press (OUP), 2018-06-04)
    We present here a survey of high-ionization absorption lines in the afterglow spectra of long-duration gamma-ray bursts (GRBs) obtained with the VLT/X-shooter spectrograph. Our main goal is to investigate the circumburst medium in the natal regions of ...
  • Ólafsdóttir, Elín Ásta; Bessason, Bjarni; Erlingsson, Sigurdur (Elsevier BV, 2018-10)
    Multichannel analysis of surface waves (MASW) is a seismic exploration method for determination of near-surface shear wave velocity profiles based on analysis of horizontally travelling Rayleigh waves. This paper aims to propose a methodology and ...
  • Di Genova, Danilo; Caracciolo, Alberto; Kolzenburg, Stephan (Elsevier BV, 2018-10)
    Iron and water content substantially affect the physical properties of natural silicate melts and may, therefore, influence magmatic and volcanic processes such as crystallization, degassing, flow behaviour and eruptive style. Here we present Raman ...
  • Zafar, T; Møller, P; Watson, D; Lattanzio, J; Hopkins, A M; Karakas, A; Fynbo, J P U; Tanvir, N R; Selsing, J; Jakobsson, Pall; Heintz, K E; Kann, D A; Groves, B; Kulkarni, V; Covino, S; D’Elia, V; Japelj, J; Corre, D; Vergani, S (Oxford University Press (OUP), 2018-07-19)
    Evolved asymptotic giant branch (AGB) stars and Type  Ia supernovae (SNe) are important contributors to the elements that form dust in the interstellar medium of galaxies, in particular, carbon and iron. However, they require at least a Gyr to start ...

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