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Modelling the transport of oil after a proposed oil spill accident in Barents Sea and its environmental impact on Alke species
(Konferansebidrag; Conference object, 2017)Accidental oil spills can have significant effect on the coastal and marine environment. As the oil extraction and exploration activities increase in the Barents Sea, it is of increasingly importance to investigate the potential oil spill incidents associated with these activities. In this study, the transport and fate of oil after a proposed oil spill incident in Barents Sea was modelled by oil ... -
Vitamin D Uptake in Patients Treated with a High-Dosed Purified Omega-3 Compound in a Randomized Clinical Trial Following an Acute Myocardial Infarction.
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-07-24)Background: <br> Fish is the natural dietary source of vitamin D. Reports on the influence of purified omega-3 fatty acids on its uptake are scarce. <br> Objectives: <br> We investigated the impact of a purified high-dose omega-3 compound compared to corn oil on 25-hydroxyvitamin D [25(OH)D] levels following an acute myocardial infarction. <br> Methods: <br> 228 patients were randomized 1:1 to receive ... -
How do women with eating disorders experience a new treatment combining guided physical exercise and dietary therapy? An interview study of women participating in a randomised controlled trial at the Norwegian School of Sport Sciences.
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-19)Objectives: <br> To investigate how women with bulimia nervosa (BN) and binge eating disorder (BED) experience participating in a new treatment programme for eating disorders, based on guided physical exercise and dietary therapy. <br> Design and participants: <br> Six women with BN and four with BED were semistructurally interviewed. Transcribed interviews were analysed using a ... -
Experiences matter: Positive emotions facilitate intrinsic motivation
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-26)This paper has two major aims. First, to investigate how positive emotions and intrinsic motivation affect each other over time. Second, to test the effect of positive emotions and intrinsic motivation on subsequent educational choices. Through two ordinary study semesters, 64 sport students in Norway reported on their intrinsic motivation for outdoor activities (twice) as well as positive ... -
One-Pot Synthesis of a bis-Pocket Corrole through a 14-fold Bromination Reaction.
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-14)A one-pot protocol, effecting 14-fold bromination with elemental bromine, has afforded copper β-octabromo-meso-tris (2,6-dibromo-3,5-dimethoxyphenyl) corrole, a new bis-pocket metallocorrole. The Cu complex underwent smooth demetalation under reductive conditions, affording the free corrole ligand, which in turn could be readily complexed to MnIII and AuIII. A single-crystal X-ray structure was ... -
Photo-irradiated caffeic acid exhibits antimicrobial activity against Streptococcus mutans biofilms via hydroxyl radical formation
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-07-25)An antimicrobial technique based on photo-oxidation of caffeic acid (CA) has recently been developed, but its effect on biofilm-forming bacteria is unknown. The present study aimed to evaluate the effect of photo-irradiated CA against Streptococcus mutans (cariogenic bacteria) biofilm as it relates to hydroxyl radical formation. S. mutans biofilms grown on hydroxyapatite disks were immersed in CA ... -
Riparian plant litter quality increases with latitude
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-09-05)Plant litter represents a major basal resource in streams, where its decomposition is partly regulated by litter traits. Litter-trait variation may determine the latitudinal gradient in decomposition in streams, which is mainly microbial in the tropics and detritivore-mediated at high latitudes. However, this hypothesis remains untested, as we lack information on large-scale trait variation for ... -
High miR-205 expression in normal epithelium is associated with biochemical failure - An argument for epithelial crosstalk in prostate cancer?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-24)Due to insufficient prognostic tools, failure to predict aggressive prostate cancer (PC) has left patient selection for radical treatment an unsolved challenge. This has resulted in overtreatment with radical therapy. Better prognostic tools are urgently warranted. MicroRNAs (miRs) have emerged as important regulators of cellular pathways, resulting in altered gene expressions. miR-205 has previously ... -
Regulation of TFPIα expression by miR-27a/b-3p in human endothelial cells under normal conditions and in response to androgens
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-27)The increased risk of cardiovascular events in older men is multifactorial, but the significant reduction of testosterone levels has been involved. As this hormone regulates the expression of TFPI by unknown mechanisms, we aimed to evaluate the role of miRNAs in the regulation of TFPIα expression under normal conditions and in response to androgens. In silico studies allowed the selection of 4 miRNAs ... -
Regulation of atypical MAP kinases ERK3 and ERK4 by the phosphatase DUSP2
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-02)The atypical MAP kinases ERK3 and ERK4 are activated by phosphorylation of a serine residue lying within the activation loop signature sequence S-E-G. However, the regulation of ERK3 and ERK4 phosphorylation and activity is poorly understood. Here we report that the inducible nuclear dual-specificity MAP kinase phosphatase (MKP) DUSP2, a known regulator of the ERK and p38 MAPKs, is unique amongst ... -
Multiplex visibility graphs to investigate recurrent neural network dynamics
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-10)A recurrent neural network (RNN) is a universal approximator of dynamical systems, whose performance often depends on sensitive hyperparameters. Tuning them properly may be difficult and, typically, based on a trial-and-error approach. In this work, we adopt a graph-based framework to interpret and characterize internal dynamics of a class of RNNs called echo state networks (ESNs). We design principled ... -
Continuous daylight in the high-Arctic summer supports high plankton respiration rates compared to those supported in the dark
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-28)Plankton respiration rate is a major component of global CO2 production and is forecasted to increase rapidly in the Arctic with warming. Yet, existing assessments in the Arctic evaluated plankton respiration in the dark. Evidence that plankton respiration may be stimulated in the light is particularly relevant for the high Arctic where plankton communities experience continuous daylight in spring ... -
Implementing an electronic health record in a Nigerian secondary healthcare facility. Prospects and challenges
(Master thesis; Mastergradsoppgave, 2017-11-02)Nigeria is witnessing continuing advocacy and increase in number of individuals yearning for computerization of health information and healthcare processes. However, little is known about the opinions of the diverse healthcare providers who would ensure the successful implementation and meaningful use of health information technology in the country (Adeleke, Erinle et al. 2015). This study explores ... -
Investigation of Sea Ice Using Multiple Synthetic Aperture Radar Acquisitions
(Doctoral thesis; Doktorgradsavhandling, 2018-02-23)The thesis investigates imaging in the vertical direction of different types of ice in the arctic using synthetic aperture radar (SAR) tomography and SAR interferometry. In the first part, the magnitude and the positions of the dominant scattering contributions within snow covered fjord and lake ice layers are effectively identified by using a very high resolution ground-based tomographic SAR system. ... -
Forskning i lærerutdanning - Vi må snakke samme språk Veiledningssamarbeid mellom praksislærer, universitetslærer og studenter
(Doctoral thesis; Doktorgradsavhandling, 2018-03-08)Hensikten med denne avhandlingen er å utforske hvilken betydning samarbeid om veiledning kan ha for å styrke partnerskap mellom lærerutdanninger og skoler, og potensialet veiledning kan ha for forsknings- og utviklingsarbeid, FoU. Det har vært lite forskning som har dokumentert reelle samarbeid mellom det akademiske teorifeltet og praksisfeltet i lærerutdanningen. Avhandlingen har som hensikt å ... -
A practical guideline for human error assessment: A causal model
(Konferansebidrag; Conference object, 2017-12-12)To meet the availability target and reduce system downtime, effective maintenance have a great importance. However, maintenance performance is greatly affected in complex ways by human factors. Hence, to have an effective maintenance operation, these factors needs to be assessed and quantified. To avoid the inadequacies of traditional human error assessment (HEA) approaches, the application of ... -
Vitamin D and cognitive function: A Mendelian randomisation study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-10-16)The causal nature of the association between hypovitaminosis D and poor cognitive function in mid- to later-life is uncertain. Using a Mendelian randomisation(MR) approach, we examined the causal relationship between 25(OH)D and cognitive function. Data came from 172,349 participants from 17 cohorts. DHCR7(rs12785878), CYP2R1 rs12794714) and their combined synthesis score were chosen to proxy 25(OH)D. ... -
Ionizing radiation abrogates the pro-tumorigenic capacity of cancer-associated fibroblasts co-implanted in xenografts
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-25)Cancer-associated fibroblasts (CAFs) are abundantly present in solid tumors and affect tumorigenesis and therapeutic responses. In the context of clinical radiotherapy, the impact of irradiated CAFs to treatment outcomes is largely unexplored. Aiming at improving radiotherapy efficacy, we have here explored the effect of radiation on the inherent pro-tumorigenic capacity of CAFs in animals. Ionizing ... -
Filament motions in magnetized plasmas
(Master thesis; Mastergradsoppgave, 2018-02-08)Interchange motions of magnetized plasmas due to either a non-uniform magnetic field or a gravitational field lead to charge polarization within a filamentary structure and set up convection. In this project we have provided a clear derivation of the two-field model equations that describe these filament motions. We have also derived an energy theorem for small amplitude oscillations. We have ... -
Estimating thermospheric neutral densities using ISR-observations during active HF-radio wave ionospheric heating experiment
(Master thesis; Mastergradsoppgave, 2017-12-15)In this study we present a method to estimate neutral thermospheric densities using ISR-observations following a sequence of high-frequency radio wave ionospheric heating modi cations in the vicinity of the ionosphere peak density altitude (hmF2), and the results from two different days of observations with low geomagnetic activity levels (AP<4) that are compared to the MSIS model. Slight ...