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Atriði 1349-1368 af 2358
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(Frontiers Media SA, 2019-04-04)Non-breeding movement strategies of migratory birds may be expected to be flexibly adjusted to the distribution and quality of habitat, but few studies compare movement strategies among populations using distinct migration routes and wintering areas. ... -
Millennial-scale fluctuations in Saharan dust supply across the decline of the African Humid Period (Elsevier BV, 2017-09)The Sahara is the world's largest dust source with significant impacts on trans-Atlantic terrestrial and large-scale marine ecosystems. Contested views about a gradual or abrupt onset of Saharan aridity at the end of the African Humid Period dominate ...
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(Public Library of Science (PLoS), 2017-10-27)Archaeological excavations of historical fishing sites across the North Atlantic have recovered high quantities of Atlantic cod (Gadus morhua) bones. In the current study we use Atlantic cod otoliths from archaeological excavations of a historical ...
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(Menntavísindasvið Háskóla Íslands, 2017-12-31)Hér er fjallað um reynslu kennara á unglingastigi grunnskóla af því að vinna í anda stefnu um skóla án aðgreiningar. Tekin voru eigindleg viðtöl við sex umsjónarkennara í jafnmörgum grunnskólum í fjórum bæjarfélögum á höfuðborgarsvæðinu. Niðurstöður ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2017-04-19)In-situ carbonation of basaltic rocks could provide a carbon storage solution for the long term. Permanence is essential for the success and public acceptance of carbon storage. The aim of this study was twofold, to evaluate and make a first estimate ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2019-10-23)The reduction of carbon dioxide (CO2) emissions in the atmosphere is currently one of the main challenges facing humanity. One solution is carbon capture from concentrated sources and directly from the atmosphere, and long term storage in rocks. Basaltic ...
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(Elsevier BV, 2019-05)We present a minimal non-supersymmetric SO(10) GUT breaking directly to the Standard Model gauge group. Precise gauge coupling unification is achieved due to the presence of two color-octet scalars, one of which is accessible to LHC searches. Proton ...
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(Elsevier BV, 2019-02)MicroRNAs regulate developmental events such as branching morphogenesis, epithelial to mesenchymal transition (EMT) and its reverse process mesenchymal to epithelial transition (MET). In this study, we performed small RNA sequencing of a breast epithelial ...
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(MDPI AG, 2020-02-26)In lung adenocarcinoma, low lamin A expression in pleural metastatic cells has been proposed as a pejorative factor. miR-9 physiologically inhibits the expression of lamin A in neural cells and seems to be a central actor in the carcinogenesis and the ...
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(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 ...
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(Public Library of Science (PLoS), 2020-09-03)The MITF, TFEB, TFE3 and TFEC (MiT-TFE) proteins belong to the basic helix-loop-helix family of leucine zipper transcription factors. MITF is crucial for melanocyte development and differentiation, and has been termed a lineage-specific oncogene in ...
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(Springer Science and Business Media LLC, 2019-01-31)The MITF transcription factor is a master regulator of melanocyte development and a critical factor in melanomagenesis. The related transcription factors TFEB and TFE3 regulate lysosomal activity and autophagy processes known to be important in ...
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(The Company of Biologists, 2015-06-19)The v-ATPase is a fundamental eukaryotic enzyme that is central to cellular homeostasis. Although its impact on key metabolic regulators such as TORC1 is well documented, our knowledge of mechanisms that regulate v-ATPase activity is limited. Here, we ...
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(Society for Neuroscience, 2020-03)Neuroplasticity forms the basis for neuronal circuit complexity and differences between otherwise similar circuits. We show that the microphthalmia-associated transcription factor (Mitf) plays a central role in intrinsic plasticity of olfactory bulb ...
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(Informa UK Limited, 2019-01-08)The complete mitogenome of Buccinum undatum obtained from transcriptome analysis is presented here. The mitogenome is 15,265 bp in length and comprises 13 protein-coding genes, 2 ribosomal subunit genes, and 22 transfer RNAs. The complete genome was ...
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(Háskólaútgáfan, 2020-12-18)Iceland has increasingly been tangled in a dense network of various mobilities, leading to the growing transnational character of Icelandic society. This means that Iceland is involved in and affected by different forms of exchange and flows of ideas, ...
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(Royal Society of Chemistry (RSC), 2019-10-15)Molybdenum nitrogenase is one of the most intriguing metalloenzymes in nature, featuring an exotic iron-molybdenum-sulfur cofactor, FeMoco, whose mode of action remains elusive. In particular, the molecular and electronic structure of the N2-binding ...
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(American Chemical Society (ACS), 2019-02-18)Afterglow is an important phenomenon in luminescent materials and can be desired (e.g., persistent phosphors) or undesired (e.g., scintillators). Understanding and predicting afterglow is often based on analysis of thermally stimulated luminescence ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, 2020-10-22)The main target of this thesis is to use density functional theory-based simulations to study electrochemical CO2 and N2 reductions by employing a recent theoretical model of an electrochemical solid-liquid interface. This model is used to investigate ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Industrial Eng., Mechanical Eng. and Computer Science, 2023-03)The main target of this thesis is to use density functional theory (DFT)-based simulations to study electrochemical CO2 reduction reactions (CO2RR) on transition metal oxides (TMOs) employing thermochemical model and computational hydrogen electrode. ...
Atriði 1349-1368 af 2358