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Introduction: The main purpose of this study was to extract global values of oxygen extraction fraction (OEF) and cerebral metabolic rate of oxygen (CMRO2) in healthy volunteers, using magnetic resonance imaging (MRI) phase maps. The repeatability of the method was evaluated, and the age dependences of OEF and CMRO2 were analyzed. Material and methods: Phase data were acquired using a 3T MRI scann

The ecological footprint of Denmark has been rising since (and likely even before) 1961, which signifies an unsustainable living by the Danish population. Global footprint reports show Denmark as one of many countries on earth which has exceeded its biocapacity (BC), which means natural resource consumption in Denmark is faster than the land’s regenerative capacity. The residents of Denmark are co

It is well-known that long memory and regime switching in the first moment of a stochastic process are easily confused. But the relation between long memory in the second moment and regime switching in the second moment is less well understood. We perform a simulation study in which we assess the possibility to distinguish the two properties in the case that data with long memory in the second mom

In 2012, the Greater Mekong Sub-region (GMS), an initiative launched by the Asian Development Bank (ADB) to promote regional integration and development between six mainland Southeast Asian countries, will reach its twentieth anniversary. Throughout the past twenty years, the GMS has been considered as highly successful, in comparison with other regional initiatives, in improving connectivity, com

Power grids worldwide are expanding not only driven by ambitious clean energy, but also because of the rising need for reliable energy. Key components of these power grids are transformers. Transformers are traditionally filled with mineral oil, to serve as a coolant and dielectric insulator. Now globally a rising trend is observed towards the adoption of less flammable, biodegradable transformer

Popular Science Summary Konsten att kunna ta bort ett syre Alla celler har DNA, som måste repareras och kopieras för att livet ska fortgå. För att kunna göra detta måste det finnas byggstenar. En av alla processer som ser till att alla delar finns i rätt mängd innefattar bara ett protein. Ett protein som får instruktioner från många håll för att gå igenom en komplicerad process som tillverkar dessThe protein ribonucleotide reductase catalyses the de novo synthesis of deoxyribonucleotides (dNTPs) from ribonucleotides (NTPs), using radical chemistry. It is under strict allosteric regulation, partly from the dNTPs it synthesises that regulate what substrate should be synthesised, but also from dATP/ATP, which regulates overall activity. It is a protein that is found in almost every living org

Cardiac magnetic resonance (CMR) images are used to investigate the heart for medical and research purposes. By injecting a contrast substance into the patient, myocardial infarctions (heart attacks) can be visualized in CMR image sets consisting of a number of image slices at different levels of the heart. Analysis of these images can detect an infarction, delineate it and estimate its size. This

In May 2011 Tetra Pak launched the first carton bottle for aseptic milk, the Tetra Evero Aseptic (TEA). This Master Thesis aims to give proposals on how the future development of the mechanism working as a dolly when the inductor is making the longitudinal sealing (LS) on the package in the A6 filling machine, should be continued. The current LS mechanism is not fulfilling the requirements in func

Populärvetenskaplig sammanfattning Spektroskopi handlar om teoretiska modeller och experiment där man observerar ljus som har växelverkat med materia. Spektroskopiska metoder används inom många olika ämnesområden som exempelvis kemi, fysik och biologi. Ett jordnära exempel på tillämpad spektroskopi är människans öga. Reflekterat ljus från olika föremål samlas in av linsen i ögat, avbildas på näthiIn this thesis a novel spectroscopic method consisting of a combination of frequency domain photon migration (FPDM) and gas in scattering media absorption spectroscopy (GASMAS) is developed, for assessment of the mean optical path length and gas absorption in porous media. The system stability is experimentally investigated and measurements are performed on balsa and pine wood to evaluate the rela

Freezing injuries usually take place in thawed plant-based food products. To reduce freezing injuries, Pulse Electric Field (PEF) treatment and Vacuum Impregnation (VI) of cryoprotectant were used before the freezing process. The aim of PEF is to provoke electroporation to the membranes of the plant cells, thereby allowing the cryoprotective solution impregnated by VI to penetrate the cells. PEF

This thesis is a case study which investigates political parties’ reasons and driving forces for advocating an expansion of E6 in Skåne with respect to the fact that the highway today has reached its full capacity. The two biggest parties in the region, the Social Democratic Party and the Moderate Party, have been included in the research. The arguments stated by each party, revealed through semi-

Purpose: The purpose of the thesis is to examine how gender relations are expressed by women within the IT occupation. Moreover, our objective is also to enhance our understanding of the meanings of campaigns for increased equality, by more specifically aiming to comprehend the meaning or meanings of the #MeToo campaign. Methodology: The study is based on a qualitative abductive research approach

Many studies on how to encourage pro-environmental behaviour have been done. However, they have tended to focus on individual behaviour in isolation of social interactions despite increasing scepticism about the effectiveness of this approach in promoting the necessary transition toward a more sustainable society. Such a transition constitutes a central part of the transformational mode of sustain

The agenda of integration of local and indigenous knowledge (LINK) with disaster risk reduction (DRR) programmes has gained momentum since 1970s. Notwithstanding the incremental attention to LINK, researchers in this field agree that successful integration of local knowledge is difficult and the processes with such aims are not carried out fully and effectively. The purpose of this study is to pro

Denna uppsats beskriver vilka kategorier av anställda som är undantagna från anställningsskydd i Sverige och Storbritannien. Fokus för uppsatsen är Storbritanniens ‘employee shareholder’ och Sveriges anställda i en företagsledande eller jämförbar ställning, eftersom dessa två kategorier ger upp delar av sitt anställningsskydd och får någon form av ersättning eller kompensation för detta. UppsatseThis essay describes which categories of employees that are exempted from employment protection in Sweden and the United Kingdom. The focus of the essay will be the UK’s employee shareholders and Sweden’s employees in a managerial or comparable position, since these two categories give up their protection and receive some form of compensation, and/or some other form of protection in return. The es

The aim of this thesis is to design two patch antenna arrays for dual-frequency harmonic radar application, one for the transmitter and the other for the receiver. The arrays are used to track the Bogong moth that migrates from the countryside to the Australian Alps during spring. The tracking is done at the radar by operating the transmitter at one frequency and the receiver at twice the frequenc

This thesis set out to map the relation Swedish farmers have to their occupation and production, while also investigating what challenges farmers experience which in turn might affect social sustainability in Swedish agriculture negatively. Agriculture was approached as a case of low social sustainability based on the fact that more than one-third of Swedish farmers are over retiring age, while yo