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Viser treff 22021-22040 av 37073
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Differential invariants of self-dual conformal structures
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-06-17)We compute the quotient of the self-duality equation for conformal metrics by the action of the diffeomorphism group. We also determine Hilbert polynomial, counting the number of independent scalar differential invariants depending on the jet-order, and the corresponding Poincaré function. We describe the field of rational differential invariants separating generic orbits of the diffeomorphism ... -
Estrogen receptors α and β in the central amygdala and the ventromedial nucleus of the hypothalamus: Sociosexual behaviors, fear and arousal in female rats during emotionally challenging events
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-27)Estrogens receptors (ER) are involved in several sociosexual behaviors and fear responses. In particular, the ERα is important for sexual behaviors, whereas ERβ modulates anxiolytic responses. Using shRNA directed either against the ERα or the ERβ RNAs (or containing luciferase control) encoded within an adeno-associated viral vector, we silenced these receptors in the ventromedial nucleus of the ... -
Seasonal variations in objectively assessed physical activity among people with COPD in two Nordic countries and Australia: a cross-sectional study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-05)<i>Purpose</i>: Seasons and weather conditions might influence participation in physical activity and contribute to differences between countries. This study aimed at investigating whether there were differences in physical activity levels between Norwegian, Danish and Australian people with chronic obstructive pulmonary disease (COPD), and establishing if any variations in physical activity were ... -
The Use of Context Data in Elective Surgery Scheduling and Planning. A literature review
(Master thesis; Mastergradsoppgave, 2019-05-15)The aim of this thesis is to examine how the use of context data in scheduling tools can contribute to the reduction of elective surgery cancellations. A literature review, following the recommendations to systematic reviews, was conducted in order to gather information on what context data could be used to improve elective surgery scheduling, and how the use of these data could affect elective ... -
Personalized treatment of hepatitis C genotype 1a in Norway and Sweden 2014-2016: a study of treatment outcome in patients with or without resistance-based DAA-therapy
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-05)<i>Objectives</i>: Resistance-associated substitutions (RASs) may impair treatment response to direct-acting antivirals (DAA) in hepatitis C virus (HCV) treatment. We investigated the effects of baseline NS3-RASs (Q80K and R155K) and clinically relevant NS5A-RASs in patients with HCV genotype (GT) 1a infection on treatment outcome, with or without resistance-based DAA-treatment. This multi-center ... -
Drug resistance and the functional role of microRNAs in neuroblastoma
(Doctoral thesis; Doktorgradsavhandling, 2019-06-13)Neuroblastoma is the most common solid tumor in infants. Most of the children diagnosed above one year of age, shows metastatic disease and poor prognosis. Chemotherapy is one of the principle mode of treatment. However, resistance to drug represent a major clinical obstacle for the effective treatment of cancer. MicroRNAs (miRNAs) are small, non-coding RNAs that regulate gene expression, ... -
Bruk av kosttilskudd blant pasienter over 70 år ved Nordlandssykehuset i Bodø
(Master thesis; Mastergradsoppgave, 2019-05-14)Bruk av kosttilskudd er vanlig i den generelle befolkningen. Kosttilskudd er ikke underlagt de samme lover og reguleringer som legemidler, og det er kjent at kosttilskudd kan gi bivirkninger og interagere med legemidler. Eldre mennesker er en spesielt utsatt gruppe for bivirkninger og interaksjoner. Formålet med studien er å kartlegge bruk av kosttilskudd blant pasienter over 70 år, undersøke om ... -
Isolation and Characterisation of Halogenated and Bioactive Compounds from Thalassospira sp. and Alteromonas sp.
(Master thesis; Mastergradsoppgave, 2019-05-15)Bacterial natural products have contributed with a large part of the bioactive compounds that lead to drugs, and the biggest portion of the marketed antibiotics are bacterial products or their derivatives. Marine bacteria are not yet investigated to the same extend as their terrestrial counterparts. Therefore, they are considered a promising source for novel bioactive metabolites for drug development, ... -
Differential invariants of Lie pseudogroups
(Doctoral thesis; Doktorgradsavhandling, 2019-05-10)We compute differential invariants for several Lie pseudogroups, and use them for solving the equivalence and classification problem for a variety of mathematical structures appearing in geometry and mathematical physics. We demonstrate utility of the algebra of rational scalar differential invariants for solving these two problems, also in cases where the structures are given as solutions to a ... -
Modulation of dendritic cells phenotype and functions by irradiated and non-irradiated lung cancer fibroblasts. An in vitro study.
(Master thesis; Mastergradsoppgave, 2019-05-15)Stromal cells in the tumor microenvironment (TME) interacts with cancer cells and affect their behavior in diverse manners. In this study, we investigated in vitro the mechanisms by which non-irradiated and irradiated cancer-associated fibroblasts (CAFs) isolated from patients with non-small cell lung carcinoma (NSCLC) affected the phenotype and function of monocyte-derived dendritic cells (Mo-DCs) ... -
DiDiMap. Diet Diary and Consumption Control for Monitoring Bowel Dysfunctions and low-FODMAP Diet App
(Master thesis; Mastergradsoppgave, 2019-05-31)The purpose of this project was to design and implement a mobile application for people with bowel dysfunctions, intolerances, and food allergies. The application was expected to provide all needed functionality for the target groups day to day challenges. Irritable bowel syndrome, intolerances, and food allergies affect a significant portion of the population. On a world basis, 15\% of the ... -
VisualBox. A Generic Data Integration and Visualization Tool
(Master thesis; Mastergradsoppgave, 2019-05-30)The number of cellular Internet of Things (IoT) connections is expected to grow at a rate of 30% each year and is reaching into the billions by 2019. The world of IoT can be fragmented since data sources span a wide variety of protocols, API's, authentication methods and file formats. Data collection and processing can be complex and producing visualizations for value extraction can be a tedious ... -
Practicing Belonging in Kindergarten: Children’s use of Places and Artefacts.
(Chapter; Bokkapittel, 2019-06-07)Boldermo presents a summary of the relationship between early childhood education for social sustainability and migrant children’s negotiations of social identity and belonging in early childhood. Focusing on the football and the football pitch, the chapter draws attention to how children’s practices of belonging can be understood through their use of artifacts and places in the kindergarten. ... -
Hvordan påvirker barns deltakelse foreldremekling? Barns deltakelse som mål og middel
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-19)Barn deltar i økende grad i familievernkontorenes obligatoriske foreldremekling ved samlivsbrudd. Det er i dag en fagpolitisk målsetting i Norge at dette skal bli regelen snarere enn unntaket. På denne måten skal barns rett til å bli hørt innfris. I denne artikkelen undersøkes mekleres erfaringer fra meklingsprosesser der barn har deltatt. Spørsmålet som stilles er: Hva gjør barns deltakelse med ... -
Arkeologiske undersøkelser av Kalvik krigsfangeleir
(Research report; Forskningsrapport, 2019)De arkeologiske undersøkelsene av Kalvik krigsfangeleir ble gjennomført med finansiering fra Statens Vegvesen, Nordland fylkeskommune og Riksantikvaren med bakgrunn i utbedring av E6 i Sørfold kommune, Nordland fylke. Undersøkelsen, som ble gjennomført av AHR ved UiT, Norges arktiske universitet, foregikk høsten 2017. Feltarbeidet inkluderte arkeologisk utgraving, detaljert dokumentasjon av synlige ... -
Improved LLM Methods Using Linear Regression
(Journal article; Peer reviewed, 2017-12-04)This paper is focused on investigations of the improved correction of the effect of variation in incidence angle on ScanSAR data. Conventional correction methods (such as LLM, locally linear mapping) typically assume that each target class has a similarity distribution in the middle of the image. The objectives of this study are to extend the correction algorithm to full swath width without any ... -
Speeding Up Non-Gaussian POLSAR Image Analysis
(Journal article; Peer reviewed, 2017-12-04)Non-Gaussian statistical models fit SAR data better than Gaussian-based statistics, in most cases, but are complicated and time-consuming to use for unsupervised image segmentation via probabilistic clustering. The more advanced the model, the more complicated and slow the clustering. The U-distribution has been demonstrated to be one of the most flexible models, capturing the Gaussian/Wishart, the ... -
Fluid-Structure Interaction (FSI) Modelling of Aquaculture Net Cage
(Journal article; Peer reviewed, 2019)The number of good sites in less exposed locations for aquaculture farming is limited. Trends are now that the fish cages are increasing in both width and depth, as well as more weather-exposed locations, are taken into use. As the net cages continue to increase in size, so does the material costs. The design of the sea cages should be modified for safe and reliable use in remote offshore locations. ... -
Too much medicine? A study investigating unwarranted regional variation and use of medical care
(Doctoral thesis; Doktorgradsavhandling, 2019-07-03)<p>Den overordna tematikken i avhandlingen er overforbruk og regional skeivbruk av helsetjenester. Fellesnevneren for delstudiene er manglende evidens for dagens praksis eller at dagens praksis ikke følger vitenskapelige anbefalinger. <p>Målet med avhandlingen var å: 1) Undersøke behandlingsmessig konsekvens av elektiv CT for pasienter med selvbegrensede anfall av mistenkt urolithiasis. 2) Kartlegge ... -
Evidence of L-mode electromagnetic wave pumping of ionospheric plasma near geomagnetic zenith
(Journal article; Peer reviewed, 2018-02-21)The response of ionospheric plasma to pumping by powerful HF (high frequency) electromagnetic waves transmitted from the ground into the ionosphere is the strongest in the direction of geomagnetic zenith. We present experimental results from transmitting a left-handed circularly polarized HF beam from the EISCAT (European Incoherent SCATter association) Heating facility in magnetic zenith. The ...