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High-frequency acoustic imaging using adhesive-free polymer transducer
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-30)The piezoelectric polymer PVDF and its copolymers have a long history as transducer materials for medical and biological applications. An efficient use of these polymers can potentially both lower the production cost and offer an environment-friendly alternative for medical transducers which today is dominated by piezoelectric ceramics containing lead. The main goal of the current work has been ... -
The Global Soil Mycobiome consortium dataset for boosting fungal diversity research
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-30)Fungi are highly important biotic components of terrestrial ecosystems, but we still have a very limited understanding about their diversity and distribution. This data article releases a global soil fungal dataset of the Global Soil Mycobiome consortium (GSMc) to boost further research in fungal diversity, biogeography and macroecology. The dataset comprises 722,682 fungal operational taxonomic ... -
Evidence for circadian-based photoperiodic timekeeping in Svalbard ptarmigan, the northernmost resident bird
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-29)The high Arctic archipelago of Svalbard (74°–81° north) experiences extended periods of uninterrupted daylight in summer and uninterrupted night in winter, apparently relaxing the major driver for the evolution of circadian rhythmicity. Svalbard ptarmigan (<i>Lagopus muta hyperborea</i>) is the only year-round resident terrestrial bird species endemic to the high Arctic and is remarkably adapted to ... -
Cumulative risk of a false-positive screening result: A retrospective cohort study using empirical data from 10 biennial screening rounds in BreastScreen Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-21)<p><b>Background</b> False-positive screening results are an inevitable and commonly recognized disadvantage of mammographic screening. This study estimated the cumulative probability of experiencing a first false-positive screening result in women attending 10 biennial screening rounds in BreastScreen Norway, which targets women aged 50 to 69 years. <p><b>Methods</b> This retrospective ... -
Generation of the short TRIM32 isoform is regulated by Lys 247 acetylation and a PEST sequence
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-17)TRIM32 is an E3 ligase implicated in diverse biological pathways and pathologies such as muscular dystrophy and cancer. TRIM32 are expressed both as full-length proteins, and as a truncated protein. The mechanisms for regulating these isoforms are poorly understood. Here we identify a PEST sequence in TRIM32 located in the unstructured region between the RING-BBox-CoiledCoil domains and the NHL ... -
Climate Mitigation through Biological Conservation: Extensive and Valuable Blue Carbon Natural Capital in Tristan da Cunha’s Giant Marine Protected Zone
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-16)Carbon-rich habitats can provide powerful climate mitigation if meaningful protection is put in place. We attempted to quantify this around the Tristan da Cunha archipelago Marine Protected Area. Its shallows (<1000 m depth) are varied and productive. The 5.4 km<sup>2 </sup>of kelp stores ~60 tonnes of carbon (tC) and may export ~240 tC into surrounding depths. In deep-waters we analysed seabed data ... -
Strategies for Prevention and Treatment of COVID-19 related Symptoms. A Population Based Cross-sectional Study in Norway, Sweden and the Netherlands
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-23)Objectives: The present study was initiated to determine consultations with health care providers and use of selfmanagement strategies for prevention or treatment of COVID-19 related symptoms in countries with a full lockdown (Norway), a partial lockdown (the Netherlands) and no lockdown (Sweden) during the first three months of the COVID-19 pandemic, and if such use correlates with worries of being ... -
PSMA Expression in Differentiated Thyroid Cancer: Association with Radioiodine, 18FDG Uptake, and Patient Outcome
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-31)Context: Little is known about prostate-specific membrane antigen (PSMA) expression in patients with cervical involvement of differentiated thyroid cancer (DTC).<p> Objective: We investigated PSMA expression in neck persistent/recurrent disease (PRD) using immunohistochemistry and the association with radioiodine (RAI) or 18-fluorodeoxyglucose (<sup>18</sup>FDG) uptake, and patient outcome.<p> Design, ... -
Unification of sparse Bayesian learning algorithms for electromagnetic brain imaging with the majorization minimization framework
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-01)Methods for electro- or magnetoencephalography (EEG/MEG) based brain source imaging (BSI) using sparse Bayesian learning (SBL) have been demonstrated to achieve excellent performance in situations with low numbers of distinct active sources, such as event-related designs. This paper extends the theory and practice of SBL in three important ways. First, we reformulate three existing SBL algorithms ... -
The seasonal dynamics of a High Arctic plant–visitor network: temporal observations and responses to delayed snow melt
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-19)Plant–visitor food webs provide important insights into species interactions, and more information about their seasonal dynamics is vital to understanding the resilience of species to external pressures. Studies of Arctic networks can also improve our understanding of species responses to the pressures of climate change. This study provides the first description of a plant – insect visitor network ... -
The influence of snow properties on speed and gait choice in the Svalbard rock ptarmigan (Lagopus muta hyperborea)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-14)Substrate supportiveness is linked to the metabolic cost of locomotion, as it influences the depth to which the foot of a moving animal will sink. As track depth increases, animals typically reduce their speed to minimize any potential energetic imbalance. Here, we examine how self-selected speed in the Svalbard rock ptarmigan is affected by snow supportiveness and subsequent footprint depth measured ... -
Evaluation of protein and amino acid intake estimates from the EPIC dietary questionnaires and 24-h dietary recalls using different food composition databases
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-20)Background and aims: This study aimed to expand the European Prospective Investigation into Cancer and Nutrition (EPIC) nutrient database (ENDB) by adding amino acid (AA) values, using the U.S. nutrient database (USNDB). Additionally, we aimed to evaluate these new protein and AA intake estimates from the EPIC dietary questionnaires (DQ) and 24- h dietary recalls (24-HDR) using different matching ... -
Intraosseous fluid resuscitation causes systemic fat emboli in a porcine hemorrhagic shock model
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-20)Background: Intraosseous cannulation can be life-saving when intravenous access cannot be readily achieved. However, it has been shown that the procedure may cause fat emboli to the lungs and brain. Fat embolization may cause serious respiratory failure and fat embolism syndrome. We investigated whether intraosseous fluid resuscitation in pigs in hemorrhagic shock caused pulmonary or systemic ... -
Coastal Polynya Disrupts the Acoustic Backscatter Diurnal Signal Over the Eastern Laptev Sea Shelf
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-16)The diel vertical migration (DVM) of zooplankton is one of the largest species migrations to occur globally and is a key driver of regional ecosystems and the marine carbon pump. The dramatic changes in the Arctic environment in recent years, mainly associated with sea-ice decline, may have wide significance for the Arctic shelf ecosystems including DVM. Observations have revealed the occurrence of ... -
Linking sea ice deformation to ice thickness redistribution using high-resolution satellite and airborne observations
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-04)An unusual, large, latent-heat polynya opened and then closed by freezing and convergence north of Greenland’s coast in late winter 2018. The closing presented a natural but well-constrained full-scale ice deformation experiment. We observed the closing of and deformation within the polynya with satellite synthetic-aperture radar (SAR) imagery and measured the accumulated effects of dynamic ... -
The third age On old age in a comparative anthropological perspective
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-17)dag regnes uttrykket «den tredje alder» gjerne som ensbetydende med pensjonisttilværelsen, selv om forestillingen om at menneskelivet kan deles inn i tre aldre er svært my e eldre enn pensjonsinstituttet. Denne forestillingen kan spores til tidlig i menneskeslektas utvikling, da behovet for «reservemødre» nødvendiggjorde sosial integrering av tre (snarere enn bare to) generasjoner. Denne integreringen ... -
Inflammation, hypertension, and microRNA and Prostate Cancer. The Prostate Cancer throughout life (PROCA-life) study
(Doctoral thesis; Doktorgradsavhandling, 2022-03-31)<p><i>Background/Aims:</i> Prostate cancer (PCa) is the most common cancer among men in Norway as well as world-wide, and a major cause of health loss and death with 1.4 million new cases and 375 000 deaths world-wide in 2020. Biological mechanisms involved in PCa development are mainly unknown, but chronic inflammation, one hallmark of cancer development, has been questioned to play a key role in ... -
A synoptic history of the development, production and environmental oversight of hydropower in Brazil, Canada, and Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-17)Sustainable global energy production is back-stopped by hydropower which is responsible for a significant share of the green energy produced worldwide. Hydropower, however, does not come without some environmental impacts but has worked to reduce those impacts. Here, we discuss the historical, legislative, and design configurations of hydropower facilities located in three of the world’s ... -
Regulation of Golgi turnover by CALCOCO1-mediated selective autophagy
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-19)The Golgi complex is essential for the processing, sorting, and trafficking of newly synthesized proteins and lipids. Golgi turnover is regulated to meet different cellular physiological demands. The role of autophagy in the turnover of Golgi, however, has not been clarified. Here we show that CALCOCO1 binds the Golgi-resident palmitoyltransferase ZDHHC17 to facilitate Golgi degradation by autophagy ... -
Population genetic structure of a major reef-building coral species Acropora downingi in northeastern Arabian Peninsula
(Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-03)Current seawater temperatures around the northeastern Arabian Peninsula resemble future global forecasts as temperatures [35 C are commonly observed in summer. To provide a more fundamental aim of understanding the structure of wild populations in extreme environmental conditions, we conducted a population genetic study of a widespread, regional endemic table coral species, Acropora downingi, ...