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Greinar- HÍ: Síðast bætt við
Atriði 481-500 af 1778
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(American Physical Society (APS), 2018-10-12)The conventional magnetic proximity effect and double-proximity effects were studied in a set of fully coherent high-quality Fe/Fe0.32V0.68 superlattices. Applying a simple model to the saturation magnetization, it is seen that the magnetic proximity ... -
(American Physical Society (APS), 2019-05-21)Here we study the magnetic proximity effect in amorphous layered magnets of alternating high- and low-Tc materials using magnetometry and polarized neutron reflectivity. By altering the thickness of either the high- or low-Tc layer we are able to extract ...
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(Springer Science and Business Media LLC, 2020-06-12)Using a combination of extended X-ray absorption fine structure measurements, stochastic quenching (SQ) calculations and Voronoi tessellation analysis, the local atomic environments in thin films of amorphous SmxCo1−x (x= 0.10, 0.22 and 0.35) are ...
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(Samtök móðurmálskennara, 2018)Er aukin enska í málumhverfi íslenskra barna alltaf á kostnað íslenskunnar? Getur tæknin stuðlað að bættum málþroska barna? Eða ýtt undir tileinkun nýrra mála? Greinarhöfundar rýna hér í rannsóknir sem gefa vísbendingar um svörin við þessum spurningum, ...
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(F1000Research, 2014-01-20)Promiscuity, the ability of an enzyme to catalyze diverse activities using the same active site, sets up the stage for the evolution of complex organisms through gene duplication and specialization. The detection of promiscuous motifs is crucial to ...
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(Hið íslenska bókmenntafélag, 2016-04-01)
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(F1000Research, 2015-01-29)The long term side effects of any newly introduced drug is a subject of intense research, and often raging controversies. One such example is the dipeptidyl peptidase-IV (DPP4) inhibitor used for treating type 2 diabetes, which is inconclusively ...
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(Samtök móðurmálskennara, 2017)Á fyrsta ári þessarar aldar skrifaði þáverandi formaður Íslenskrar málnefndar, Kristján Árnason prófessor, grein í Málfregnir þar sem hann skilgreindi ágætlega tvenns konar vanda sem hann taldi íslenskt mál myndi standa frammi fyrir á nýbyrjaðri öld; ...
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(Wiley, 2018-12-21)Most enzymes are homodimers or higher order multimers. Cold‐active alkaline phosphatase from Vibrio splendidus (VAP) transitions into a dimer with very low activity under mild denaturation conditions. The desire to understand why this dimer fails to ...
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(Frontiers Media SA, 2020-06-03)To date, most mass balance studies in Iceland have concentrated on the three largest ice caps. This study turns the focus toward smaller Icelandic glaciers, presenting geodetic mass-balance estimates for 14 of them (total area 1,005 km2 in 2017) from ...
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(Elsevier BV, 2020-03)The Saksunarvatn Ash, first found in the Faroe Islands, is a tephra produced by the Grímsvötn volcanic system in Iceland. Since its discovery in the Faroe Islands, dark tephra with a similar stratigraphic position has been described at numerous locations ...
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(Elsevier BV, 2016-07)Alkaline phosphatase is a homodimeric metallo-hydrolase where both Zn2+ and Mg2+ are important for catalysis and stability. Cold-adapted alkaline phosphatase variants have high activity at low temperatures and lower thermal stability compared with ...
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(American Society for Microbiology, 2017-12-04)The airway epithelium restricts the penetration of inhaled pathogens into the underlying tissue and plays a crucial role in the innate immune defense against respiratory infections. The whooping cough agent, Bordetella pertussis, adheres to ciliated ...
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(Cambridge University Press (CUP), 2020-06-02)Non-surface mass balance is non-negligible for glaciers in Iceland. Several Icelandic glaciers are in the neo-volcanic zone where a combination of geothermal activity, volcanic eruptions and geothermal heat flux much higher than the global average lead ...
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(American Chemical Society (ACS), 2017-09-07)The effect of ionic strength on enzyme activity and stability varies considerably between enzymes. Ionic strength is known to affect the catalytic activity of some alkaline phosphatases (APs), such as Escherichia coli AP, but how ions affect APs is ...
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(Elsevier BV, 2018-07)Chemical denudation rates during the 2014–15 Bárðarbunga eruption, calculated using river chemical fluxes, increased substantially confirming that volcanic activity and its products such as fresh lava, and acidic volatiles accelerates these rates. ...
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(Elsevier BV, 2017-11)The chemical composition of Icelandic rain and snow is dominated by marine aerosols, however human and volcanic activity can also affect these compositions. The six month long 2014–15 Bárðarbunga volcanic eruption was the largest in Iceland for more ...
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The chemical composition of rivers and snow affected by the 2014/2015 Bárðarbunga eruption, Iceland (Elsevier BV, 2016-04)The 2014/15 Bárðarbunga volcanic eruption was the largest in Iceland for more than 200 years. This eruption released into the atmosphere on average 60,000 tonnes/day of SO2, 30,000 tonnes/day of CO2, and 500 tonnes/day of HCl affecting the chemical ...
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(Impact Journals, LLC, 2019-07-23)Estrogen receptor-positive breast cancer is subdivided into subtypes LuminalA and LuminalB, based on different expression patterns. MicroRNA-190b has been reported to be up-regulated in estrogen receptor-positive breast cancers. In this study we aimed ...
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(Menntavísindasvið Háskóla Íslands, 2018-12-31)Rannsóknin sem hér segir frá er hluti af stærra rannsóknarverkefni um siðfræði í bókmenntakennslu. Í þessari grein er sjónum beint að reynslu íslenskukennara af því að kenna unglingum í 9. og 10. bekk í grunnskóla ...
Atriði 481-500 af 1778