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The decay of solutions to the Klein-Gordon equation is studied in two expanding cosmological spacetimes, namely (1) the de Sitter universe in flat Friedmann-Lemaitre-Robertson-Walker (FLRW) form, and (2) the cosmological region of the Reissner-Nordström-de Sitter (RNdS) model. Using energy methods, for initial data with finite higher order energies, bounds on the decay rates of the solution are ob
Orchids have minute, air-filled seeds and are considered as efficient dispersers and colonizers. Yet, empirical studies show that most seeds fall within the nearest metre from the mother plant in orchids, and that individuals standing close to each other are often closely related. A poor contribution to gene dispersal by seeds may be compensated for by more efficient dispersal by pollen, but in auOrchids have minute, air-filled seeds and are considered to be efficient dispersers and colonizers. However, empirical studies show that most seeds fall within a metre of the mother plant in orchids, and that individuals standing close to each other are often closely related. A poor contribution to gene dispersal by seeds may be compensated for by more efficient dispersal by pollen, but in autogam
The industry today strives for the development of new materials and production methods to reduce CO2 emissions and production cost with lighter materials and more effective manufacturing processes. Scientists and engineers work with different methods and models to ensure the demands for new technology. The aim of this thesis is to experimentally measure the mechanical properties of two titanium al
Contamination of groundwater resources from industrial sites are a prevalent issue worldwide. Characteristic of contaminated site investigations is small site scale and variability of ground conditions that necessitate extensive invasive methods. Invasive methods are costly and therefore pursuit of applicable less costly non-invasive methods to characterise the site and develop a robust ConceptualContamination of groundwater resources from industrial sites are a prevalent issue worldwide. Characteristic of contaminated site investigations is small site scale and variability of ground conditions that necessitate extensive invasive methods. Invasive methods are costly and therefore pursuit of applicable less costly non-invasive methods to characterise the site and develop a robust Conceptual
Facing increasing pressure to decarbonize, innovation within the shipping sector has turned to low-and zero carbon solutions. In this paper we investigate how the development and implementation of biodiesel and liquefied biogas (LBG) in Norwegian coastal shipping has been influenced by the technological alignment with fossil fuels. We understand this influence to emanate from the (mis)match of bio
This thesis is devoted to the study of different aspects of groups acting on rooted trees and their applications.First, we focus on the Hausdorff dimension of groups acting on rooted trees. We develop new tools that lead to the solution of several well-known open problems in the subject due to Abért-Virág, Bartholdi, Grigorchuk, Klopsch and Shalev among others.Secondly, we study many aspects of thThis thesis is devoted to the study of different aspects of groups acting on rooted trees and their applications.First, we focus on the Hausdorff dimension of groups acting on rooted trees. We develop new tools that lead to the solution of several well-known open problems in the subject due to Abért-Virág, Bartholdi, Grigorchuk, Klopsch and Shalev among others.Secondly, we study many aspects of th
5 oktober 2026 14:15 till 15:15 | Seminarium Lund University’s Profile Areas Nature-Based Future Solutions and Human Rights invite you to a joint seminar and fika with Linnéa Nordlander, recently appointed Global Research Fellow at the Faculty of Law. In her talk, Linnéa will present her research on the intersection of human rights, climate change, and just transition. The event also aims to conti
https://www.jur.lu.se/evenemang/seminar-profile-area-networking-human-rights-climate-change-and-just-transition - 2026-07-23
Popular Abstract in English Consumption of multimedia content is one of the main tasks we perform in our day-to- day lives, such as listening to music on an iPod or watching the news from an online steaming service. As technology has evolved and enabled easier access to different content (basically access anything anywhere), our consumption has grown. In only the last decades we have evolved from Multimedia has become one of the cornerstones of our 21st century society and, when combined with mobility, has enabled a tremendous evolution of our society. However, joining these two concepts introduces many technical challenges. These range from having sufficient performance for handling multimedia content to having the battery stamina for acceptable mobile usage. When taking a projection of w
In Lund city center there are many buildings classed as cultural heritage. In Maria Magle, which is one of the oldest block in the city, the Salvation Army build their head quarter in Lund 1899. In recent time the Salvation Army sold their building and it took a new shape and form as a concert hall and is now called Magle Concert Hall. The house is owned and managed by Lund Student Singers, but it
In this report the function of an eccentric drive (Cyclo Drive) is evaluated. The drive transfers torque between two parallel axes. The eccentric drive is used in a differential in an all-wheel drive system made by BorgWarner. The purpose of the Cyclo Drive is to transfer torque between two parallel-displaced axles without eccentric rotation. The mechanism consists of three discs with the middle
Personlig integritet är ett begrepp som har fått en allt viktigare innebörd i arbetslivet de senaste åren. Frågan om drogtesters plats i arbetslivet är en av de mest framträdande frågorna, då det av många anses vara en kränkning av den personliga integriteten. Det är därför av stor vikt att bedöma när och för vilka syften ett drogtest kan anses vara befogat. Det uppstår därmed en situation där arb
Soils play a critical role in the carbon (C) cycle by regulating the atmospheric carbon dioxide (CO2) levels, and correspondingly the Earth’s climate. However, there are still countless questions of how biological and geochemical soil processes affect the C cycle. To be able to predict future implications on the Earth’s climate, we need to understand these processes. Globally, soils store more C tIron oxide nanoparticles are involved in several important biogeochemical processes. The interfaces between aqueous solutions and iron oxide nanoparticle surfaces are found everywhere in nature, and the chemical and microbial processes occurring at these complex interfaces control e.g. nutrient and contaminant availability and transport. Recently, it has been shown that certain ectomycorrhizal (EC
Proteins are large, complex molecules that play many critical roles in the body and are required for the structure, function, and regulation of the body’s tissues and organs. In very simple terms, a protein can be defined as a linear chain of subunits called amino acid residues. The individual amino acid residues are sequentially bonded together by peptide bonds. There are 20 standard amino acids This work is primarily about the development, validation and application of computer simulation models for intrinsically disordered proteins, both in solution and in the presence of uniformly charged, ideal surfaces. The models in question are either coarse-grained or atomistic in nature, and their applications are dependent on the specific purpose of each study. Both, Metropolis Monte Carlo and m
Condition Based Monitoring techniques have been developed to monitor the condition of critical components in machines. The most widely used technique to detect damage in machine components is vibration monitoring, but there are areas where other methods could be a better option. Vibration measuring can also be used as a broader search for damage in components while other methods can specify the ex
