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The phase field method emerged as a tool to solve free boundary problems with a sharp interface. In previous methods, this involved the computationally inefficient and complicated tracking of a moving interface. The phase field method overcomes this limitation by introducing an auxiliary variable called the order parameter which varies continuously over the whole domain and takes on finite values
The advantages with infrared heating and the fact that the technology has become significantly more inexpensive opens up a bigger interest to develop products using infrared heaters further. What will the future kitchen look like? How can infrared technology develop and create more conventional and intellectual products processing our food? By pushing the limits of the technology today the main
Utveckling och testning av reaktorer för katalysmätningar Katalysatorer är oumbärliga i såväl livsprocesser som industriella tillämpningar. Bilismen är ett exempel där katalysatorer används vid såväl bränsletillverkning som avgasrening. Men detta är långt ifrån det enda användningsområdet. Katalysatorer är också delaktiga i tillverkningen av uppemot 90% av alla kemikalier. Industriella katalysaIn this project four reactors for studies of heterogeneous catalysis have been developed. They were tested using case studies, especially concerning methane oxidation over palladium. The test measurements showed that the reactors work or would work very well after slight modifications. The first reactor allowed for activity measurement using mass spectrometry for temperatures up to at least 1000°C
I svenska kommuner används för tillfället ofta papperskartor som geografiskt hjälpmedel vid fältarbete. En mobil GIS (geografiskt informationssystem)applikation skulle kunna vara ett användbart hjälpmedel vid sådant fältarbete och speciellt för att genomföra fältinventering. I detta examensarbete har en sådan applikation utvecklas. Applikationen har utvecklats för Örebro kommun och kallas iSurvey.Currently, Swedish municipalities generally use paper maps to conduct field work. A Mobile GIS (geographical information system) application could be a useful tool when conducting field work and field inventory work. In this master thesis, such an application has been developed. The application was developed for the municipality in Örebro and is called iSurvey. When developing a mobile application
Popular science Carbon cycle has great importance in all time scales for its inter-connected relation and response with climate system. Increased anthropogenic emission of CO2 is alleged to impact the climate system in the future, which will affect the feedback between carbon cycle and climate change. In this project, a climate-carbon cycle feedback analysis has been conducted by using long simula
The purpose of this master’s thesis was to examine existing augmented reality technologies and develop an application for Windows phone. The goal with the application was to find new ways to use augmented reality technologies together with public transport. The end user would use the application to search for and find new journey options. The development process consisted of four steps – investig
This paper examines how worries about war affect the political participation of women and men in Ukraine. The analysis is based on secondary data from the seventh wave of the World Values Survey 2017-2020. By constructing linear regressions, I examined whether there is a correlation between the worries about the war and the political activity of women and men in Ukraine. This allowed us to see how
The objective of this thesis has been to improve the camera controls of a fixed-wing drone to be used in maritime search-and-rescue operations by the Swedish Sea Rescue Society (SSRS). A gimbal control interface (GCI) has been implemented that displays the video feed of the drone camera while taking control inputs from a joystick that moves its view in real-time. In the thesis, the GCI has been
Den ökande andelen variabla förnybara energikällor i det svenska elsystemet har medfört ett växande behov av flexibilitet och balanstjänster. Batterienergilagringssystem betraktas som en nyckelteknik för att möta dessa behov, men deras ekonomiska lönsamhet är i hög grad beroende av marknadens utformning, geografisk placering samt vald operativ strategi. Syftet med detta examensarbete är att analysThe increasing share of variable renewable energy sources in the Swedish power system has led to growing demand for flexibility and balancing services. Battery energy storage systems (BESS) are widely regarded as a key technology to meet these needs, yet their economic viability depends strongly on market design, geographical location, and operational strategy. This thesis assesses the revenue pot
The thesis assesses the role of grassroots organisations in climate action through sustainable food practices, focusing on social innovation, collective learning, community-building and local resilience inside the city of Lund, in the Skåne region of southern Sweden. It intends to understand how local groups, combining practical knowledge with community-based innovations, collaborate to build a cu
Reliable six-degree-of-freedom pose estimation is a key requirement for autonomous on-orbit servicing (OOS), in which a robotic spacecraft performs tasks such as inspection, maintenance, and life extension of other satellites in orbit. However, generating trustworthy ground truth for algorithm development remains challenging. This thesis investigates calibration, sensor evaluation, and sensor fusi
The aim of this project is to discuss how designers can contribute to gender equality and female empowerment in craft-production industry. The study was done as a collaboration with the Indian organization Industree to study methods designers can use to assure that the economic/social balance in the value chain is fair. The organization works with craft-production as a means of generating income a
Spider silk is a highly attractive biomaterial with exceptional strength and versatility, offering potential applications across numerous industries. However, large-scale production remains a significant challenge. Harvesting silk directly from spiders has proven impractical, making recombinant protein production a promising alternative. Spider silk has been studied at Lund University for several
Architecture is often seen as the art of permanence, of creating structures meant to endure. But what happens when permanence is disrupted – when buildings fall into ruin or are dismantled? This thesis explores decay, reuse, and reassembly, challenging conventional preservation by embracing impermanence and unconventional outcomes. Set in the hills of Oltrepò Pavese in southern Lombardy, it focuse
Industrial society is the reason for the rising global ecological crisis, and companies are a primary contributor to this trend. To change this course, companies must transform along with society’s green transition. In the academic debate of economics and sustainability, various competing economic paradigms suggest how to steer society towards a sustainable transformation. Based on theoretical his
Size Exclusion Chromatography (SEC) is a crucial analytical tool employed by Novo Nordisk for the assessment of potential aggregation in active pharmaceutical ingredients (API) derived from peptides and protein biopharmaceuticals. This investigation focuses on SEC analyses conducted under denaturing conditions, utilizing Ultra High-Performance Liquid Chromatography (HULK) adapted columns. Intrigui
This thesis describes the development process of a digital tool that can be used by locksmiths to quickly and easily find the right components for repairing and replacing electronic locking mechanisms. The tool took the form of a mobile application and was developed in collaboration with Robust Ellåsning AB in Malmö, Sweden. The report describes an iterative, human-centered design process, from da
With the development of the global economy and human society, population growth and urbanization, water resources are becoming more and more important, and the monitoring of water resources is also crucial. Therefore, this article designed a system for monitoring PH level in water, and designed a wireless transmission system based on LoRa technology. According to the actual application requir
