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Position and direction estimation is useful for numerous engineering applications for commercial, scientific, and military purposes. Technology that fuses observations of signals broadcast by Global Navigational Satellite Systems (GNSS) with inertial measurements is standard for electronic devices, but this requires at least a periodically unobstructed view of the sky to perform reliably. This has
Context. TOI-732 is an M dwarf hosting two transiting planets that are located on the two opposite sides of the radius valley. Inferring a reliable demographics for this type of systems is key to understanding their formation and evolution mechanisms. Aims. By doubling the number of available space-based observations and increasing the number of radial velocity (RV) measurements, we aim at refinin
Power quality is an important issue for the distribution network companies. They must guarantee the electricity supply fulfilling the requirements for the consumers. In this thesis we investigate specifically voltage requirements. We use transformers and tap changers to see how the voltage works in an electric system and we analyze the relationships with other aspects of the system’s performance,
Popular science Boreal forests play an important role within the global climatic system, since they generally act as a carbon sink. However, contrary to expectations, measurements have shown that the boreal forest at the Norunda research site in Central Sweden is acting as a carbon source, i.e. emitting more of the greenhouse gas carbon dioxide (CO2) as taking up. Soil CO2 efflux plays an importan
Timber-concrete composite structures were originally developed for upgrading existing timber oors, but during last decades, they have new applications in multistorey buildings. Most of the research performed on these structures has focused on systems in which wet concrete is cast on top of timber beams with mounted connectors. Recently investigations on composite systems were performed at Luleå Un
Heavy-duty transport is one of the major contributors to global greenhouse gas (GHG) emissions, with internal combustion engines (ICEs) expected to remain an important propulsion technology in long-haul applications during the transition to sustainable transport. The use of renewable gaseous fuels such as biogas and hydrogen offers a promising pathway to significantly reduce the climate impact of
Metal contamination of water bodies has attracted global attention owing to its environmental toxicity, abundance and persistence. Metals such as arsenic, cadmium and mercury are of greater concern since they are toxic even at low concentrations. Mercury is present at 1000 times lower concentrations than the other two metals, but still has a negative impact on the environment due to its high trans
An aging population is associated with an increased prevalence of cognitive decline and related diseases. Gradual cognitive decline is a natural feature of aging, but may also develop into a more severe loss of cognitive function, manifesting as mild cognitive impairment or severe cognitive disease. Currently, no medical treatments can fully prevent these conditions or diseases. One approach is to
Ventricular-arterial coupling (VAC) has independent diagnostic and prognostic value for cardiovascular (CV) risk stratification, but studies on its association with anthropometric and CV factors are sparse in young individuals without overt CV disease. We aim to provide descriptive data regarding VAC and its associations with CV risk factors in young adults without overt CV disease. For 631 (mean
Temperature is a major determinant of biological process rates, and microorganisms are key regulators of ecosystem carbon (C) dynamics. Temperature controls microbial rates of decomposition, and thus warming can stimulate C loss, creating positive feedback to climate change. If trait distributions that define temperature relationships of microbial communities can adapt to altered temperatures, the
Background: Changes in grey matter covariance networks have been reported in preclinical and clinical stages of Alzheimer’s disease (AD) and have been associated with amyloid-β (Aβ) deposition and cognitive decline. However, the role of tau pathology on grey matter networks remains unclear. Based on previously reported associations between tau pathology, synaptic density and brain structural measu
We are surrounded by various chemicals, both naturally occurring and synthetically produced. Some, but not all, chemicals can be hazardous for human health following exposure, especially for vulnerable population groups including children, adolescents, and pregnant women. The increased use and production of chemicals have contributed positively to society in numerous ways, while also resulting in
Dual-mobility cups in THA were designed to reduce prosthesis instability and the subsequent risk of revision surgery in high-risk patients, such as those with hip fractures. However, there are limited data from clinical studies reporting a revision benefit of dual-mobility over conventional THA. Collaboration between anthroplasty registries provides an opportunity to describe international practic
BACKGROUND: Based on clinical and genetic associations, axial spondyloarthritis (axSpA) and inflammatory bowel disease (IBD) are suspected to have a linked pathogenesis. Gut dysbiosis, intrinsic to IBD, has also been observed in axSpA. It is, however, not established to what degree gut dysbiosis is associated with axSpA disease severity. The objective of this study was to compare gut dysbiosis fre
Popular Abstract in Swedish Konkurrensen har ökat markant under 2000-talet med ökad globalisering och hållbarhetstrender. Ständigt pågående teknologiska utvecklingar har medfört att kraven på rätt kvalitet på varor och tjänster har ökat. Tillverkare måste också följa skärpningar inom lagstiftning och krav på spårbarhet. Det har sammantaget lett till att det ställs allt hårdare krav på effektiv förToday’s trends are the ever growing competition with increased globalization and sustainability. Together with ongoing technological developments and the demand for right quality of products and services, this has also resulted in increased demands for legislation and traceability. This development has also had an impact on packaging and Packaging Logistics. This thesis deals with packaging, logis
AbstractThe epidemiological association between diabetes and heart failure is well-established and the two entities areemerging as global threats, both individually and synergistically, to an aging population. The exploration of multipleproteins can shed light on pathophysiological pathways in both diabetes and cardiovascular disease. This canpossibly provide novel diagnostic, prognostic and hopef
The Common Agricultural Policy (CAP) is the guiding policy for agriculture and the largest single budget item in the European Union (EU). Agriculture is essential to meet the Sustainable Development Goals (SDGs), but the CAP's contribution to do so is uncertain. We analyzed the distribution of €59.4 billion of 2015 CAP payments and show that current CAP spending exacerbates income inequality withi
Internal combustion engines have been the most used engine design when it comes to vehicle propulsion and transportation. But as the number of vehicles increase, new problems arise as well. Engine emissions such as carbon dioxide that has an effect on a global scale and other harmful emissions that affect on a local scale such as soot and nitrogen oxides are on the rise, forcing the countries to t
Cancer cells reside in a complex microenvironment comprising stromal cells and immune cells embedded in an extracellular matrix (ECM). Early on in tumor progression, cells reach a critical volume beyond which blood supply is impaired, leading to a decrease in oxygen levels (hypoxia) and nutrient supply. This situation triggers a stress response characterized by a metabolic switch to glycolysis, wh
