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Due to increasing global energy demands and a need to move away from non-renewable energy sources, green hydrogen is now being considered as a possible replacement for fossil-based energy sources. Especially in “hard-to-abate” sectors, such as steel and petrochemical production, and long-distance transport, where the change to renewable electricity is more difficult. Green hydrogen is produced thr
Tendons connect muscle to bone and assist in joint motion. To be able to do this, they must withstand large forces and be able to alter their structure under load. If a tendon experiences too high or sudden forces, it will start to tear and eventually rupture. To examine how this happens and how the tendon behaves before rupture, mechanical testing is done. This study focuses on how to combine mec
In the search for neutron antineutron oscillations (n → ̄n) in the proposed 200m long NNBAR beamline, it is imperative that the pions originating from the antineutron annihilation events can be detected outside of the vacuum chamber. The purpose of the design of the vacuum chamber then becomes to minimise the effect of the chamber while also adhering to the requirements of the pressure vessels. To
A lack of somatostatin expressing interneurons (SST INs) is known to be a factor in several neurodegenerative and neurospsychiatric diseases, such as Alzheimer disease, Parkinson’s disease and schizophrenia. Being able to efficiently obtain SST INs in vitro could enable a greater understanding and better treatment of these diseases. The development of SST INs is not yet fully understood, but it is
The use of antenna arrays allows for direction-of-arrival (DoA) estimation in a radar system. The antenna elements in an array are conventionally positioned equidistantly on a grid, but they can also be placed relatively freely to form sparse antenna arrays. These non-conventional layouts could potentially offer improved DoA capabilities. In this work, a particle swarm optimization algorithm has b
This thesis investigates a new type of Phase-Locked Loop (PLL) architecture which combines a phase/frequency detector (PFD) and a digital loop filter. The quantization is done by a time-to-digital converter which continuously shrinks the pulse coming from the PFD and registers how far it propagates. Based on how far into the TDC each pulse propagates, the phase error is determined. The design is f
Bakgrund: Barn ska få vara delaktiga och få anpassat stöd för att uttrycka sig i sin intervention. Barn med autismspektrumdiagnos (ASD) har ofta en annorlunda sensorisk process, vilket kan påverka delaktighet i aktiviteter. Det saknas information kring hur arbetsterapeuter samkonstruerar med barnet som klient i interventioner. Syfte: Att undersöka hur arbetsterapeuters samkonstruktion sker med barBackground: Children must receive tailored support to participate and express themselves in their care. Children with autism spectrum disorder (ASD) commonly have a different sensory process, which can affect participation in activities. There is a lack of information regarding how occupational therapists collaborate with children as clients in interventions. Purpose: To investigate how occupation
Nitrous oxide (N2O) emissions, which primarily originate from the biological nitrogen removal process, dominate the release of greenhouse gases (GHGs) in wastewater treatment plants (WWTPs). N2O production occurs through dynamic microbial pathways that have a significant impact on the environment compared with other GHG emissions. Reducing these substantial emissions aligns with the objectives of
Sveriges geologiska undersökning (SGU) har ägnat flera år åt att undersöka den svenska berggrunden för att utreda möjligheterna för geologisk lagring av koldioxid. Djupt liggande akviferer anses ha störst potential och den kambriska Faluddensandstenen, som finns i Östersjön öster om Gotland, visar stor potential som lagringsakvifer. I denna studie har borrkärnan St. Sutarve-2018 från södra GotlandThe Geological Survey of Sweden (SGU) has spent several years investigating the Swedish bedrock to find suitable bedrock for geological storage of carbon dioxide. Deep saline aquifers are considered to have the greatest potential, and the Cambrian Faludden Sandstone subcropping in the Baltic Sea east of Gotland, shows great potential as a storage aquifer. In this study, the drill core St. Sutarve
Today, the textile industry in Sweden is responsible for up to 1800 tons of textile waste per year, a poor use of resources that results in a negative environmental impact. Additionally, with the rise of fast fashion, which is characterized by rapid trend circulation and a clothing production that matches, clothes are discarded at a higher rate than ever before. However, the popularity of secondha
During the past ten years, Sweden's security policy has undergone a clear change, where key events have been Russia's invasion of Ukraine in 2022 and, most recently, Sweden's entry into NATO in 2024. The focus on issues such as national security and military rearmament have increased. The essay discusses how a perceived need to improve resilience has put requirements on the population
This thesis studied the recording methodologies of conducting unannounced evacuation drills to enhance the understanding of evacuation behaviours and performance within the Complex Muon Solenoid (CMS) cavern at CERN. The primary objective was to validate the CMS underground evacuation simulation model for planned evacuation and compare various data collection methods. An unannounced evacuation dr
Preeclampsia (PE) occurs in up to 5% of worldwide pregnancies. It is a complex disease characterised by sudden onset hypertension, and it is harmful to the mother as well as the growing baby, accounting for 40% of fetal deaths worldwide. The disease can be divided into early and late-onset PE, defined as diagnosis earlier or later than 34 weeks of gestation. Despite decades of research, the cause
The study focuses on the eco-design of sustainable packaging solutions for plant-based meat analogues, particularly plant-based burger patties. This is in response to the growing need for more sustainable dietary choices which can replace those of animal-based meat. Currently, most of the plant-based meat analog products in the market are packaged like meat products, which in turn are more sensiti
Lantmännen Cerealia i Malmö utför provbak av bröd som ett led i deras kvalitetskontroll av ett malet mjöl. Nuvarande metod med provbakning av bröd på Lantmännen innehåller ister. Det är en kvarleva från förr då det var ett vanligt fett att använda till bakning. Det stämmer dock dåligt överens med hur det ser ut i bagerierna som idag använder framförallt rapsolja som fett i bakningen. KvalitetsavdeAs part of their ground flour quality control, Lantmännen Cerealia in Malmö bakes bread for testing purposes. Lantmännen's current bread baking process involves the use of lard. This is a relic from the past when it was a common fat for baking. However, it does not agree with how it looks in bakeries, which today mainly use rapeseed oil as fat in baking. The quality department at Lantmännen is
EMC is crucial when it comes to designing modern electronic systems, ensuring their functionality, reliability, and regulatory compliance amidst the ever-expanding electromagnetic landscape. This master's thesis delves into the domain of EMC by investigating the possibility of developing a Python-based proof-of-concept tool. The software tool is designed to analyze frequency spectra acquired f
Bakgrund: Psykisk ohälsa påverkar förmågan att delta i aktiviteter i vardagen. Arbetsterapeuter kan genom gruppinterventioner möjliggöra engagemang i meningsfulla aktiviteter i vardagen för personer med psykisk ohälsa. Gruppinterventioner kan bidra med upplevelse av hälsa och välbefinnande utifrån teorier om aktivitetsvärden som beskrivs i den arbetsterapeutiska modellen ’The Value and Meaning in
