Now showing items 61-80 of 34101

    • Depressive Symptoms Are Not Associated with Predementia Cerebrospinal Fluid Amyloid Pathology 

      Eriksson, Cecilia Magdalena; Kirsebom, Bjørn-Eivind Seljelid; Espenes, Ragna; Siafarikas, Nikias Ioannis; Waterloo, Knut; Rongve, Arvid; Selnes, Per; Aarsland, Dag; Fladby, Tormod; Hessen, Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-10)
      Introduction: Depressive symptoms are associated with Alzheimer’s disease (AD), but their neurobiological and neuropsychological correlates remain poorly understood. We investigate if depressive symptoms are associated with amyloid (Aβ) pathology and cognition in predementia AD.<p><p> Methods: We included subjective cognitive decline (SCD, n = 160) and mild cognitive impairment (MCI, n = 192) from ...
    • Community's ecological traits reflect spatio-temporal variability of climate change impacts 

      Polo Sainz, Julia; Punzón, Antonio; Hidalgo, Manuel; Pecuchet, Laurene Anne Marie; Sainz-Bariáin, Marta; González-Irusta, José Manuel; Esteban, Antonio; García, Encarnación; Vivas, Miguel; Gil de Sola, Luis; López-López, Lucía (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-12)
      Climate change is triggering shifts in species distribution eventually altering communities’ biogeography. The composition of a community in terms of its species’ ecological niche informs of a community’s response to environmental conditions and impacts, which is central for a timely conservation. While the thermal niche has been widely explored, given it offers a direct link of warming effects ...
    • Application of generalized aurora computed tomography to the EISCAT-3D project 

      Tanaka, Yoshimasa; Ogawa, Yasunobu; Kadokura, Akira; Aso, Takehiko; Gustavsson, Björn Johan; Brändström, Urban; Sergienko, Tima; Ueno, Genta; Saita, Satoko (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-29)
      EISCAT_3D is a project to build a multi-site phased-array incoherent scatter radar system in northern Fenno-Scandinavia. We demonstrate via numerical simulation how useful monochromatic images taken by a multi-point imager network are for auroral research in the EISCAT_3D project. We apply the generalized aurora computed tomography (G-ACT) method to modelled observational data from real instruments, ...
    • Two-agent proportionate flowshop scheduling with deadlines: polynomial-time optimization algorithms 

      Ying, Kuo-ching; Pourhejazy, Pourya; Sung, Chuan-En (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-21)
      Volatility in the supply chain of critical products, notably the vaccine shortage during the pandemic, influences livelihoods and may lead to significant delays and long waiting times. Considering the capital- and time-intensive nature of capacity expansion plans, strategic oper ational production decisions are required best to address the supply-demand mismatches given the limited production ...
    • The association between emotional abuse in childhood and healthcare utilization in adulthood among sami and non-sami: the SAMINOR 2 questionnaire survey 

      Osman, Farhiyo Ahmed; Eriksen, Astrid Margrethe Anette; Norbye, Anja Margrete Davis (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-21)
      Background Emotional abuse in childhood is the most common type of childhood abuse worldwide and is associated with a variety of somatic and mental health issues. However, globally and in indigenous contexts, research on the associations between emotional abuse in childhood and somatic and mental specialist healthcare utilization in adulthood is sparse.<p> <p>Aim The main aim of this study ...
    • Use of directed quasi-metric distances for quantifying the information of gene families 

      Thorvaldsen, Steinar; Hössjer, Ola (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-12)
      A large hindrance to analyzing information in genetic or protein sequence data has been a lack of a mathematical framework for doing so. In this paper, we present a multinomial probability space X as a general foundation for multicategory discrete data, where categories refer to variants/alleles of biosequences. The external information that is infused in order to generate a sample of such data ...
    • “Using network analysis modularity to group health code systems and decrease dimensionality in machine learning models” 

      Askar, Mohsen Gamal Saad; Småbrekke, Lars; Holsbø, Einar Jakobsen; Bongo, Lars Ailo Aslaksen; Svendsen, Kristian (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-11)
      Background: Machine learning (ML) prediction models in healthcare and pharmacy-related research face challenges with encoding high-dimensional Healthcare Coding Systems (HCSs) such as ICD, ATC, and DRG codes, given the trade-off between reducing model dimensionality and minimizing information loss. Objectives: To investigate using Network Analysis modularity as a method to group HCSs to improve ...
    • Feeding ecology of age-0 polar cod (Boreogadus saida) in the Greenland Sea 

      Klasmeier, Apasiri (Master thesis; Mastergradsoppgave, 2024-08-15)
      Polar cod (Boreogadus saida) play a crucial role as a key species in Arctic marine ecosystems. The importance of successful feeding of particularly their sensitive early life stages for survival and later recruitment into the adult population is known. This study investigated the diets of age-0 polar cod in the Greenland Sea (Northeast Greenland) during the summer and fall of 2017, focusing on ...
    • Singers of the High Arctic; Seasonal acoustic presence of Spitsbergen bowhead whales (Balaena mysticetus) around Svalbard, Norway 

      Wams, Luca (Master thesis; Mastergradsoppgave, 2024-08-15)
      Marine mammals throughout the circumpolar Arctic are facing profound levels of environmental change due to climate warming. Among them is the bowhead whale (Balaena mysticetus), an Arctic endemic cetacean that spends its entire life in Arctic waters and lives in tight association with sea ice habitats. The Spitsbergen bowhead whale population resides in the Northeast Atlantic, where they were hunted ...
    • Foraging Behavior of Chinstrap Penguins (Pygoscelis antarctica) at the South Orkney Islands (Antarctica) during their Breeding Season 

      Rusch, Marie (Master thesis; Mastergradsoppgave, 2024-08-14)
      Chinstrap penguins (Pygoscelis antarctica) are central place foragers during their breeding season in the austral summer, which restricts the distance and duration they can forage away from their chicks. Recent studies indicate a regional decline in chinstrap penguin populations across their distribution range. During breeding, they almost exclusively feed on Antarctic krill (Euphausia superba), a ...
    • Influence of meteoric smoke particles on the incoherent scatter measured with EISCAT VHF 

      Gunnarsdóttir, Tinna Líf; Mann, Ingrid Brigitte; Feng, Wuhu; Huyghebaert, Devin Ray; Haeggstroem, Ingemar; Ogawa, Yasunobu; Saito, Norihito; Nozawa, Satonori; Kawahara, Takuya D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-04)
      Meteoric ablation in the Earth’s atmosphere produces particles of nanometer size and larger. These particles can become charged and influence the charge balance in the D region (60–90 km) and the incoherent scatter observed with radar from there. Radar studies have shown that, if enough dust particles are charged, they can influence the received radar spectrum below 100 km, provided the electron ...
    • The 3-billion fossil question: How to automate classification of microfossils 

      Martinsen, Iver; Wade, David; Godtliebsen, Fred; Ricaud, Benjamin (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-08)
      Microfossil classification is an important discipline in subsurface exploration, for both oil & gas and Carbon Capture and Storage (CCS). The abundance and distribution of species found in sedimentary rocks provide valuable information about the age and depositional environment. However, the analysis is difficult and time-consuming, as it is based on manual work by human experts. Attempts to automate ...
    • Måleegenskaper ved den norske versjonen av Parenting Stress Index (PSI), 2. utgave 

      Wessel, Pål; Kyrrestad, Henriette (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-22)
      Beskrivelse Parenting Stress Index (PSI) er et kartleggingsverktøy for å måle foreldrestress i foreldre-barnrelasjonen, og er tilgjengelig både i fullversjon og kortversjon. Måleinstrumentet ble utviklet av Richard R. Abidin i 1995, og oversatt til norsk av John A. Rønning i 2006. PSI-fullversjon består av et barnedomene på seks delskalaer og et foreldredomene på syv delskalaer som til sammen ...
    • The impact of level of documentation on the accessibility and affordability of new drugs in Norway 

      Fagereng, Gro Live; Morvik, Anne Marit; Ulimoen, Sara Reinvik; Ringerud, Anne Marthe; Dahlen Syversen, Iselin; Sagdahl, Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-14)
      Introduction: Over the preceding decade, an increasing number of drugs have been approved by the European Medicines Agency (EMA) with limited knowledge of their relative efficacy. This is due to the utilization of non-randomized, single-arm studies, surrogate endpoints, and shorter follow-up time. The impact of this trend on the accessibility and affordability of newly approved drugs in Europe remains ...
    • Disease activity trajectories from childhood to adulthood in the population-based Nordic juvenile idiopathic arthritis cohort 

      Rypdal, Veronika Gjertsen; Glerup, Mia; Rypdal, Martin Wibe; Arnstad, Ellen Dalen; Aalto, Kristiina; Berntson, Lillemor; Fasth, Anders; Herlin, Troels; Myrup, Charlotte; Peltoniemi, Suvi; Rygg, Marite; Nordal, Ellen Berit (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-03-08)
      Objectives To identify long-term disease activity trajectories from childhood to adulthood by using the clinical Juvenile Arthritis Disease Activity Score (cJADAS10) in juvenile idiopathic arthritis (JIA). Second, to evaluate the contribution of the cJADAS10 components and explore characteristics associated with active disease at the 18- year follow-up.<p> <p>Methods Patients with onset of ...
    • Breaking down barriers to mental healthcare access in prison: a qualitative interview study with incarcerated males in Norway 

      Solbakken, Line Elisabeth; Bergvik, Svein Hugo; Wynn, Rolf (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-17)
      Background Mental health problems are highly prevalent in prison populations. Incarcerated persons generally come from disadvantaged backgrounds and are living under extraordinary conditions while in prison. Their healthcare needs are complex compared to the general population. Studies have found that incarcerated individuals are reluctant to seek help and that they experience challenges in ...
    • DNA methylation fine-tunes pro-and anti-inflammatory signalling pathways in inactive ulcerative colitis tissue biopsies 

      Meng, Wei; Fenton, Christopher Graham; Johnsen, Kay-Martin; Taman, Hagar; Florholmen, Jon; Paulssen, Ruth Erika Hildegard Hracky (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-03-21)
      DNA methylation has been implied to play a role in the immune dysfunction associated with inflammatory bowel disease (IBD) and the disease development of ulcerative colitis (UC). Changes of the DNA methylation and correlated gene expression in patient samples with inactive UC might reveal possible regulatory features important for further treatment options for UC. Targeted bisulfite sequencing ...
    • Biomolecular evidence for changing millet reliance in Late Bronze Age central Germany 

      Orfanou, Eleftheria; Zach, Barbara; Rohrlach, Adam B.; Schneider, Florian N.; Paust, Enrico; Lucas, Mary Alexis; Hermes, Taylor; Ilgner, Jana; Scott, Erin; Ettel, Peter; Haak, Wolfgang; Spengler, Robert; Roberts, Patrick (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-22)
      The Bronze Age of Central Europe was a period of major social, economic, political and ideological change. The arrival of millet is often seen as part of wider Bronze Age connectivity, yet understanding of the subsistence regimes underpinning this dynamic period remains poor for this region, in large part due to a dominance of cremation funerary rites, which hinder biomolecular studies. Here, we ...
    • SARS-CoV-2 infection during pregnancy and the risk of adverse maternal outcomes in the Republic of Georgia: a national birth registry-based cohort study 

      Skhvitaridze, Natia; Gamkrelidze, Amiran; Manjavidze, Tinatin; Brenn, Tormod Ola; Rylander, Karin Charlotta Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-02-22)
      Background Georgia experienced an increase in maternal deaths (MD) during the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, which warrants further investigation. This study aimed to assess associations between timing of SARS-CoV-2 infection during pregnancy and MD, post-delivery intensive care unit (ICU) admission, and caesarean section (CS) delivery.<p> <p>Methods We ...
    • Sanser i spill og følelser i fjellet: Den sensoriske skikjøreren 

      Skille, Tarjei Tveito (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-05)
      Denne artikkelen drøfter de sensoriske og sanselige uttrykkene og verdiene blant skikjørere som bedriver topptur i Tromsø, Nord-Norge. Fra et feltarbeid i vinterfjellet skildres empiriske turforløp som spiller opp sterke utslag av følelser, og underbygger betydningen av turlagsrelasjoner. Med inspirasjon fra sosialfenomenologiske antropologiske perspektiver og en autoetnografisk tilnærming beskriver ...