Viser treff 1261-1280 av 36148

    • Enhancing Medical Image Quality Using Fractional Order Denoising Integrated with Transfer Learning 

      Annadurai, Abirami; Sureshkumar, Vidhushavarshini; Jaganathan, Dhayanithi; Dhanasekaran, Seshathiri (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-29)
      In medical imaging, noise can significantly obscure critical details, complicating diagnosis and treatment. Traditional denoising techniques often struggle to maintain a balance between noise reduction and detail preservation. To address this challenge, we propose an “Efficient Transfer-Learning-Based Fractional Order Image Denoising Approach in Medical Image Analysis (ETLFOD)” method. Our approach ...
    • Single-cell phenotypic profiling and backtracing exposes and predicts clinically relevant subpopulations in isogenic Staphylococcus aureus communities 

      Hira, Jonathan; Singh, Bhupender; Halder, Tirthankar; Mahmutovic, Anel; Ajayi, Clément; Sekh, Arif Ahmed; Hegstad, Kristin; Johannessen, Mona Susan; Lentz, Christian Stephan (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-01)
      Isogenic bacterial cell populations are phenotypically heterogenous and may include subpopulations of antibiotic tolerant or heteroresistant cells. The reversibility of these phenotypes and lack of biomarkers to differentiate functionally different, but morphologically identical cells is a challenge for research and clinical detection. To overcome this, we present ´Cellular Phenotypic Profiling and ...
    • A novel clinical prediction model for hip fractures: a development and validation study in the total population of Sweden 

      Nordström, Peter; Ahlqvist, Viktor H.; Ballin, Marcel; Nordström, Anna Hava (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-05)
      Background - Low bone density and osteoporosis are indications for bone-specific treatment. However, given the limited availability of bone density data in clinical practice and the fact that most patients with hip fracture do not have osteoporosis, accurate prediction of hip fracture risk in the absence of bone density data would be crucial.<p> <p>Methods - This development and validation study ...
    • Impaired Balance Predicts Cardiovascular Disease in 70-Year-Old Individuals-An Observational Study From the Healthy Aging Initiative 

      Nordström, Anna Hava; Nordström, Peter (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-18)
      Background - Limited research has explored balance problems as a prospective risk factor for cardiovascular disease (CVD). This study aimed to characterize the association between balance measures and the risk of incident CVD in a population of 70‐year‐olds.<p> <p>Methods and Results - From 2012 to 2022 a cohort of 4927 older individuals who were CVD free underwent balance assessments using a ...
    • How well does a single blood sample represent long-term exposure for epidemiological studies of PFOA among men in the general population? 

      Bartell, Scott M.; Purdue, Mark P.; Rhee, Jongeun; Nøst, Therese Haugdahl; Rusiecki, Jennifer; Steenland, Kyle (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-05)
      Many epidemiological studies use a single blood sample per participant to assess exposure, but it is unclear how well a single sample represents longer term exposure. We performed a simulation study using summary statistics for repeated serum PFOA measurements from several previous studies in men to generate plausible serum concentrations over time, taking within-subject correlations into account. ...
    • Effect of pharmacological treatment of attention-deficit/hyperactivity disorder on later psychiatric comorbidity: a population-based prospective long-term study 

      Lyhmann, Ingvild; Widding-Havnerås, Tarjei; Bjelland, Ingvar; Markussen, Simen; Elwert, Felix; Chaulagain, Ashmita; Mykletun, Arnstein; Halmøy, Anne (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-19)
      Background Psychiatric comorbidity is frequent among persons with attention-deficit/hyperactivity disorder (ADHD). Whether pharmacological treatment of ADHD influences the incidence of psychiatric comorbidity is uncertain.<p> <p>Objective To investigate associations and causal relations between pharmacological treatment of ADHD and incidence of subsequent comorbid psychiatric diagnoses. <p>Methods ...
    • Impact of the VTE-PREDICT calculator on clinicians’ decision making in fictional patients with venous thromboembolism: a randomized controlled trial 

      Duijzer, Daniël; de Winter, Maria A.; Carrier, Marc; Cohen, Alexander T.; Hansen, John Bjarne; Kaasjager, Karin A.H.; Kakkar, Ajay K.; Middeldorp, Saskia; Sørensen, Henrik T.; Visseren, Frank L.J.; Wells, Philip S.; Dorresteijn, Jannick A.N.; Nijkeuter, Mathilde (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-11)
      Background - After 3 months of anticoagulation for venous thromboembolism (VTE), the decision needs to be made whether to stop anticoagulation or extend treatment indefinitely. The VTE-PREDICT calculator can be used to estimate individual risks of VTE recurrence and bleeding to guide this decision.<p> <p>Objectives - To evaluate the impact of predicted individual risks of recurrence and bleeding ...
    • Elucidating the power of arginine restriction: taming type I interferon response in breast cancer via selective autophagy 

      Lamsal, Apsana; Andersen, Sonja Benedikte; Johansson, Ida; Drigeard Desgarnier, Marie-Catherine Anne Danielle; Wolowczyk, Camilla Izabel; Engedal, Nikolai; Vietri, Marina; Bjørkøy, Geir; Giambelluca, Miriam Soledad; Pettersen, Kristine (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-18)
      Background - Type I interferons (IFN-I) are potent alarm factors that initiate cancer cell elimination within tumors by the immune system. This critical immune response is often suppressed in aggressive tumors, thereby facilitating cancer immune escape and unfavorable patient outcome. The mechanisms underpinning IFN-I suppression in tumors are incompletely understood. Arginase-1 (ARG1)-expressing ...
    • Linking metabolism and histone acetylation dynamics by integrated metabolic flux analysis of Acetyl-CoA and histone acetylation sites 

      Egger, Anna-Sophia; Rauch, Eva; Sharma, Suraj; Kipura, Tobias; Hotze, Madlen; Mair, Thomas; Hohenegg, Alina; Kobler, Philipp; Heiland, Ines; Kwiatkowski, Marcel (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-19)
      Objectives - Histone acetylation is an important epigenetic modification that regulates various biological processes and cell homeostasis. Acetyl-CoA, a hub molecule of metabolism, is the substrate for histone acetylation, thus linking metabolism with epigenetic regulation. However, still relatively little is known about the dynamics of histone acetylation and its dependence on metabolic processes, ...
    • Dealing with Nordic Colonialism: Agency and Othering in Two Art Projects Invoking Living Ethnographic Displays 

      Stien, Hanne Hammer; Baglo, Cathrine (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-08)
      In this article we explore two art projects that each, in their own way, thematise Nordic European colonialism and exhibition culture, and the relationship between the two. European Attraction Limited, by the Swedish-Norwegian artist Lars Cuzner and the Sudanese-Norwegian artist Mohamed Ali Fadlabi, was presented in the context of the Bicentenary of the Norwegian Constitution in Oslo in 2014. The ...
    • High-Resolution Longitudinal eDNA Metabarcoding and Morphological Tracking of Planktonic Threats to Salmon Aquaculture 

      Algueró-Muñiz, María; Spatharis, Sofie; Dwyer, Toni; de Noia, Michele; Cheaib, Bachar; Liu, Yee Wan; Robertson, Brendan A.; Johnstone, Calum; Welsh, Jennifer; Macphee, Annabell; Mazurkiewicz, Marta; Bickerdike, Ralph; Migaud, Hervé; McGhee, Clara; Præbel, Kim; Llewellyn, Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-09-30)
      Salmonid aquaculture, a major component of the Northern European, North American, and Chilean coastal economies, is under threat from challenges to gill health, many of which originate from plankton communities. A first step toward mitigating losses is to characterize the biological drivers of poor gill health. Numerous planktonic taxa have been implicated, including toxic and siliceous microalgae, ...
    • Roles of miR-20a-5p in breast cancer based on the clinical and multi-omic (CAMO) cohort and in vitro studies 

      Tylden, Eline Sol Garthsdatter; Delgado, Andrè Berli; Lukic, Marko; Moi, Line; Busund, Lill-Tove Rasmussen; Pedersen, Mona Irene; Lombardi, Ana Paola; Olsen, Karina Standahl (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-23)
      MicroRNAs are involved in breast cancer development and progression, holding potential as biomarkers and therapeutic targets or tools. The roles of miR-20a-5p, a member of the oncogenic miR-17-92 cluster, remain poorly understood in the context of breast cancer. In this study, we elucidate the role of miR-20a-5p in breast cancer by examining its associations with breast cancer risk factors and ...
    • The Application of Simulation in Facility Layout Design of an Industry 4.0 Factory 

      Jefroy, Niloofar; Azarian, Mathew; Yu, Hao (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-25)
      Facility layout planning (FLP) is one of the most discussed industrial topics that affects the performance of a manufacturing system. Conventional approaches have extensively focused on quantitative analyses with a primary focus on cost minimization. The recent technological development in computer-based simulation has provided powerful tools to better visualize and test different layouts in an ...
    • Instruction-guided deidentification with synthetic test cases for Norwegian clinical text 

      Lund, Jørgen Aarmo; Burman, Per Joel Burman; Woldaregay, Ashenafi Zebene; Jenssen, Robert; Mikalsen, Karl Øyvind (Journal article; Tidsskriftartikkel; Peer reviewed, 2024)
      Deidentification methods, which remove directly identifying information, can be useful tools to mitigate the privacy risks associated with sharing healthcare data. However, benchmarks to evaluate deidentification methods are themselves often derived from real clinical data, making them sensitive themselves and therefore harder to share and apply. Given the rapid advances in generative language ...
    • A systematic survey of 200 systematic reviews with network meta-analysis (published 2020-2021) reveals that few reviews report structured evidence summaries 

      Løvsletten, Per Olav; Wang, Xiaoqin; Pitre, Tyler; Ødegaard, Marte; Veroniki, Areti Angeliki; Lunny, Carole; Tricco, Andrea C.; Agoritsas, Thomas; Vandvik, Per Olav (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-26)
      Objectives - To map whether and how systematic reviews (SRs) with network meta-analysis (NMA) use presentation formats to report (a) structured evidence summaries – here defined as reporting of effects estimates in absolute effects with certainty ratings and with a method to rate interventions across one or more outcome(s) – and (b) NMA results in general.<p> <p>Study Design and Setting - We ...
    • Point-cloud clustering and tracking algorithm for radar interferometry 

      Ivarsen, Magnus Fagernes; St‐Maurice, Jean-Pierre; Hussey, Glenn C.; Huyghebaert, Devin Ray; Gillies, D. Megan (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-22)
      In data mining, density-based clustering, which entails classifying datapoints according to their distributions in some space, is an essential method to extract information from large datasets. With the advent of software-based radio, ionospheric radars are capable of producing unprecedentedly large datasets of plasma turbulence backscatter observations, and new automatic techniques are needed to ...
    • Longitudinal course of inflammatory-cognitive subgroups across first treatment severe mental illness and healthy controls 

      Sæther, Linn Sofie; Ueland, Thor; Haatveit, Beathe; Vaskinn, Anja; Flaaten, Camilla Bärthel; Mohn, Hanne Christine; Ormerod, Monica Bettina E. Greenwood; Aukrust, Pål; Melle, Ingrid; Steen, Nils Eiel; Andreassen, Ole; Ueland, Torill (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-02)
      Background - While inflammation is associated with cognitive impairment in severe mental illnesses (SMI), there is substantial heterogeneity and evidence of transdiagnostic subgroups across schizophrenia (SZ) and bipolar (BD) spectrum disorders. There is however, limited knowledge about the longitudinal course of this relationship.<p> <p>Methods - Systemic inflammation (C-Reactive Protein, CRP) ...
    • The long non-coding RPPH1 is decreased in leukocytes and increased in plasma from women developing pre-eclampsia† 

      Myhrer, Dina-Marie Munkelien; Frøystad, Monica; Paasche Roland, Marie Cecilie; Ueland, Thor; Lekva, Tove (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-30)
      Previous studies show differentially expressed long non-coding RNA present in the placenta from women with pre-eclampsia, potentially playing a vital role in the pathogenesis of the complication. In a published microarray study, Ribonuclease P RNA component H1 was decreased in leukocytes from women that later developed pre-eclampsia. We hypothesized that Ribonuclease P RNA component H1 decreased ...
    • The consequences of tritium mix for simulated ion cyclotron emission spectra from deuterium-tritium plasmas 

      Slade-Harajda, T.W.; Chapman, Sandra; Dendy, R.O. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-16)
      Measurements of ion cyclotron emission (ICE) are obtained from most large magnetically confined fusion plasma experiments, and may be used in future to quantify properties of the fusion-born alpha-particle population in deuterium-tritium (DT) plasmas in ITER. ICE is driven by spatially localised, strongly non-Maxwellian, minority energetic ion populations which relax collectively under the ...
    • Summer and polar night diets of polar cod Boreogadus saida and Atlantic cod Gadus morhua in Kongsfjorden, Svalbard, Norway 

      Bengtsson, Oskar; Lydersen, Christian; Węsławski, Jan Marcin; Berge, Jørgen; Kovacs, Kit M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-10-17)
      Rapid Atlantification of marine ecosystems in the Svalbard Archipelago (Norway) is posing a threat to the local polar cod (Boreogadus saida) population. In Kongsfjorden, the decreasing population of polar cod is experiencing a shift in their prey community from Arctic to Atlantic zooplankton and fish. Simultaneously, the abundance of Atlantic cod Gadus morhua is increasing. In this study, we explore ...