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Achieving a robust ignition with minimal spark plug wear is challenging in heavy duty engines fueled with gaseous fuels like biogas and hydrogen. Thermal energy deposition from the spark to the gas was studied in a 10.9 milliliter custom-built spark calorimeter. An AC capacitive ignition system was used along with a dual-nickel standard J-gap spark plug and the influence of multiple physical and e
Objectives: To analyze device designs, similarities and overlaps of custom-made fenestrated arch endografts intended for mid/distal arch thoracic endovascular aortic repair. Materials and Methods: A multicenter cross-sectional study analyzing custom-made anonymized graft plans was performed. Graft plans were included from a cohort of mid/distal aortic arch repairs using custom-made fenestrated aor
Background Colorectal polypectomy is operator dependent, with variable rates of complete resection. The currently available assessment tools do not provide specific competency-based evaluation of provider technique. We aimed to validate the Global Polypectomy Assessment Tool (GPAT), a novel competency assessment tool for colorectal polypectomy. Methods GPAT was derived from the ESGE Curriculum for
Background: The aim of heart transplantation is prolonged survival and improved quality of life. Chronic pain is a common and distressing symptom after heart transplantation. To our knowledge, there are no person-centred interventions aimed at chronic pain and symptom distress after heart transplantation. The aim was to assess the feasibility and acceptability of systematic, person-centred symptom
Introduction: Worldwide, exposure to sexual violence has widespread consequences for survivors’ health and for their communities. There is still insufficient understanding of how to design support and care services for survivors in a multiorganizational context. This study aims to map and explore support and care for survivors of sexual violence from a multiorganizational perspective in Sweden, to
Plasma phosphorylated-tau 217 (p-tau217) is currently the most promising biomarker for reliable detection of Alzheimer's disease pathology. Various p-tau217 assays have been developed, but their relative performance is unclear. We compared key plasma p-tau217 tests using cross-sectional and longitudinal measures of amyloid-β (Aβ)-PET, tau-PET and cognition as outcomes and benchmarked them against
Background: Early evidence suggests beta-blockers may have a disease-modifying effect in hereditary haemorrhagic telangiectasia (HHT). We aimed to assess the efficacy of oral propranolol is reducing severity of HHT-related epistaxis. Methods: A randomised, double blind, placebo controlled clinical trial was conducted in adults with HHT experiencing epistaxis. Subjects were randomly assigned to rec
Background and Aims. While the rationale for coronavirus disease 2019 (COVID-19) vaccination is to reduce complications and overall mortality, some cardiovascular complications from the vaccine itself have been demonstrated. Myocarditis and pericarditis are recognized as rare acute adverse events after mRNA vaccines in young males, while evidence regarding other cardiovascular events remains limit
In multiple myeloma (MM), advancements in treatments and toxicity management have enhanced survival rates. This, coupled with shifting age demographics in MM, necessitates an updated assessment of infection risks in MM patients compared to the general population. Using Swedish population-based registries, we investigated the incidence of infections in 8,672 Swedish symptomatic MM patients diagnose
Soil management is a crucial aspect of sustainable agriculture, and traditional knowledge has played a pivotal role in shaping practices that maintain soil health over time. This study examines the significance of traditional soil management techniques used in Uttar Pradesh, India, and assesses their effectiveness in addressing modern agricultural challenges. The primary objective of this analysis
We study the possibility of designing No(1)-round protocols for problems of substantially super-linear polynomial-time (sequential) complexity on the congested clique with about N1/2 nodes, where N is the input size. We show that the average time complexity of the local computation performed at a clique node (in terms of the size of the data received by the node) in such protocols has to be substa
Background. Treatment of childhood medulloblastoma has evolved to reduce neurotoxicity while improving survival. However, the impact of evolving therapies on late neurocognitive outcomes and adult functional independence remains unknown. Methods. Adult survivors of childhood medulloblastoma (n = 505; median [minimum–maximum] age, 29 [18–46] years) and sibling controls (n = 727; 32 [18–58] years) f
Background and aims: Gallstone disease during pregnancy can have varying consequences, from mild to severe and even life-threatening. The aim was to investigate how gallstone intervention during pregnancy impacts pregnancy, delivery and the newborn child. Methods: Pregnant patients 18–45 years identified from the Swedish National Register for Gallstone Surgery and Endoscopic Retrograde Cholangiopa
Brain amyloid-β (Aβ) pathology is a core feature of Alzheimer disease (AD) and can be quantified using positron emission tomography (PET). Cerebrospinal fluid (CSF) and plasma biomarkers detect abnormal Aβ, but it is unclear to what degree they can predict quantitative Aβ-PET. We explored plasma and CSF biomarkers in relation to Aβ-PET in the BioFINDER-2 study (N = 1053), and the BioFINDER-1 study
Objective: Synovial fluid contains proteins that may have been released from surrounding tissues, our aim was to gain new insights into the proteomic profiles of human synovial fluid in knees with and without osteoarthritis (OA). Methods: We used synovial fluid from 11 patients with end-stage medial compartment knee OA, aspirated during total knee replacement, and from 13 deceased donors who had n
Objective: To evaluate the effects of excluding fatty tissue in QSM of human knee cartilage. Materials and methods: Gradient echo images from 18 knee-healthy volunteers were acquired, from which chemical shift corrected field perturbation maps were calculated. Based on these, QSM maps were reconstructed using morphology enabled dipole inversion and one of three masking alternatives: (1) excluding
Background: Low adherence to lipid-lowering therapy (LLT) after myocardial infarction (MI) is associated with increased risk of recurrent cardiovascular events and death. However, little is known about long-term adherence patterns following treatment interruptions. The aim of this study was to describe adherence trajectories in MI patients following a LLT treatment gap, and model the impact of dif
Organoid systems hold promise as miniaturized in vitro platforms that model developmental and pathological processes. However, the engineering of human bone marrow organoids (BMOs) has been a long-standing challenge. Recently, the field has witnessed the emergence of BMO-like systems, a potential paradigm shift for the study of human hematopoiesis and associated niche elements. Published protocols
Background: Continuity of care (CoC) is essential for effective primary health care (PHC), yet Swedish PHC has historically exhibited low levels of continuity. The Swedish Patient Choice Reform introduced privatization and market-oriented principles into PHC, leading to increased utilization and growing inequities in service use driven by socioeconomic disparities and misalignment with health care
