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Now showing items 4123-4142 of 4657
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(Oxford University Press (OUP), 2004-12)The dynamic and melting processes of a ridge-centred plume have been investigated in a companion paper by Ruedas et al. (hereafter referred to as Paper I) in a set of 3-D numerical fluid dynamic models with varying plume excess temperatures and melt ... -
(2024-02)Temperature plays a fundamental role in biology, influencing cellular function, chemical reaction rates, molecular structures, and interactions. While the temperature dependence of many biochemical reactions is well defined in vitro, the effect of ...
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Temperature dependency of resonance fluorescence from InAs/GaAs quantum dots: Dephasing mechanisms (American Physical Society (APS), 2016-07-20)We report a study on temperature-dependent resonant fluorescence from InAs/GaAs quantum dots. We combined spectral and temporal measurements in order to identify sources of dephasing. In the spectral domain, we observed temperature-dependent broadening ...
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(Wiley-Blackwell, 2016-03)Global warming is widely predicted to reduce the biomass production of top predators, or even result in species loss.Several exceptions to this expectation have been identified, however, and it is vital that we understand the underlyingmechanisms if we ...
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(2022-11-08)We aimed to investigate a hypothesised association between daily mean temperature and the risk of surgery for acute type A aortic dissection (ATAAD). For the period of 1 January 2005 until 31 December 2019, we collected daily data on mean temperatures ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Life and Environmental Sciences, 2021-06)Increasing water temperatures are predicted worldwide, with high amplitudes in the Arctic and sub-Arctic regions exceeding predictions for other regions. An understanding how Atlantic cod (<i>Gadus morhua<i>) reacted to changing environmental conditions ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Physical Sciences, 2017-11)Microscopic magnetic particles can be found in a wide range of systems, from asteroids in outer space and minerals in the Earth’s crust to living organisms on land and in the ocean. Often they determine critical functional properties of these systems ...
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(CSIRO Publishing, 2023)Environmental context. Arsenic contamination has a disproportionate effect on marine ecosystems. Organisms such as some marine macroalgae, which accumulate potentially toxic elements from the surrounding environment, have developed an internal conversion ...
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(Copernicus GmbH, 2017-09-14)Icelandic dust sources are known to be highly active, yet there exist few model simulations of Icelandic dust that could be used to assess its impacts on the environment. We here present estimates of dust emission and transport in Iceland over 27 years ...
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(Oxford University Press (OUP), 2019-11-07)Priming of attention shifts involves the reduction in search RTs that occurs when target location or target features repeat. We used functional magnetic resonance imaging to investigate the neural basis of such attentional priming, specifically focusing ...
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(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2021-02)The physico-chemical properties of magma storage reservoirs in multi-level magmatic systems may change with time, along with the timescales at which crystals and melts are processed throughout the crust. In this thesis, I use an integrated approach ...
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(Elsevier BV, 2019-10-20)Studies of short-lived radiogenic isotope systems and noble gas isotopic compositions of plume-derived rocks suggest the existence of primordial domains in Earth's present-day mantle. Tungsten-182 anomalies together with high 3He/4He in Phanerozoic ...
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(2021-06-01)Repeated periods of inflation-deflation in the vicinity of Mt. Þorbjörn-Svartsengi, SW-Iceland, were detected in January–July, 2020. We used seismic ambient noise and interferometry to characterize temporal variations of seismic velocities (dv/v, %). ...
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(Beilstein Institut, 2015-02-09)Three 2´-deoxynucleosides containing semi-flexible spin labels, namely TA, UA and UC, were prepared and incorporated into deoxyoligonucleotides using the phosphoramidite method. All three nucleosides contain 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) ...
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(2023-10-16)Antibiotics are recognized widely for their benefits when used appropriately. However, they are often used inappropriately despite the importance of responsible use within good clinical practice. Effective antibiotic treatment is an essential component ...
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(2023-04-20)Kennaramenntun hefur víða verið gagnrýnd fyrir skort á samhengi innan námsins og einnig skort á tengslum milli námskeiða í kennaranámi og starfa kennara á vettvangi. Alþjóðlegar rannsóknir á kennaramenntun benda til þess að lykilatriði í árangursríkum ...
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(Háskóli Íslands, Menntavísindasvið, 2020-04-03)Þær Hrefna Sigurjónsdóttir, framkvæmdastjóri Heimilis og skóla og Kristín Jónsdóttir lektor í kennslu- og menntunarfræði tóku af skarið reifuðu málin á fyrsta fræðslufundinum sem bar yfirskriftina Tengsl heimila og skóla – tækifæri eða tjúlluð togstreita!
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(The Educational Research Institute, 2018-12-21)Rannsóknir sýna að lestraráhugahvöt hefur áhrif á ýmsar hliðar lestrarfærni, svo sem umskráningu, lesskilning og orðaforða. Börn með litla lestraráhugahvöt lesa minna en jafnaldrar með meiri lestraráhuga og sterk tengsl eru á milli slakrar lestraráhugahvatar, ...
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(Laeknabladid/The Icelandic Medical Journal, 2019-02-05)Inngangur Einkenni frá stoðkerfi eru algeng meðal unglinga og vitað er að slík einkenni á unglingsárum geta leitt til langvarandi stoðkerfisvandamála á fullorðinsárum. Stoðkerfisvandamál eru vaxandi meðal vinnandi fullorðins fólks og með algengari ...
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(Stofnun stjórnsýslufræða og stjórnmála við Háskóla Íslands, 2016-12-19)Millistjórnendur eru í krefjandi hlutverki og upplifa sig oft eins og milli steins og sleggju. Þeir gegna þungavigtarhlutverki en störf þeirra einkennast af miklu vinnuálagi og streitu. Þó hafa þeir fengið fremur litla athygli í stjórnendafræðum, einkum ...
Now showing items 4123-4142 of 4657