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The distribution of organic matter (OM) in soil particle-size fractions is a key process in the dynamic and persistence of soil organic carbon. In order to study the distribution of organic amendments among the different soil particle-size fractions in a semi-arid, degraded soil (a sandy loam Haplic Regosol), a 9-month-incubation experiment was carried out after the application of composted organi
The strong focus on decreasing carbon dioxide emissions due to limited natural resources of fossil fuel as well as alarming climate changes drives the research and development of our prime mover, the combustion engine, faster then ever. The minimum requirement is a power source with increased efficiency while emitting ultra low levels of hazardous local and regional emissions. The concept of Homog
Alzheimer's disease is a neurodegenerative condition which involves heavy neuronal cell death linked to oligomers formed during the aggregation process of the amyloid β peptide 42 (Aβ42). The aggregation of Aβ42 involves both primary and secondary nucleation. Secondary nucleation dominates the generation of oligomers and involves the formation of new aggregates from monomers on catalytic fibril su
In this thesis, the electronic structure and optical properties of semiconductor nanostructures are studied theoretically. Three types of nanostructures have been studied, silicon nanocrystals, free-standing III-V nanowires and free-standing GaAs/AlGaAs nanowire superlattices. The calculations have been carried out using an atomistic, empirical tight-binding approach. Silicon nanocrystals have at
Many universities are actively promoting scholarly inquiry into teaching and learning to improve education. Strategies used may involve support for development projects, teaching awards and academies. The Faculty of Medicine, Lund University, Sweden, has developed a Teaching Academy with criteria for membership founded in Scholarship of Teaching and Learning (Kreber, 2002; Trigwell & Shale, 20
To achieve cleaner combustion and higher efficiency in compression ignition (CI) engines, many new combustion strategies have been developed. Among these new concepts, partially premixed combustion (PPC) attracts a lot of attention, because of its possibility to achieve simultaneously low soot and NOx. Compared to homogeneous charge compression ignition (HCCI) combustion, charge stratification in
Wildfire danger indices, or fire danger rating systems, are widely used to inform decision-making related to wildfire risk management. Several studies have compared different indices’ performance; however, results have shown that this varies in different parts of the world. Further, many of these indices have not yet been assessed for Swedish conditions. In this study, four different weather-based
Context. SDSS-IV APOGEE-2, GALAH, and Gaia-ESO are high-resolution, ground-based, multi-object spectroscopic surveys providing fundamental stellar atmospheric parameters and multiple elemental abundance ratios for hundreds of thousands of stars of the Milky Way. Data from these and other surveys contribute to investigations of the history and evolution of the Galaxy. Aims. We undertake a compariso
BACKGROUND: To have an impact on the population's health, preventive interventions have to reach a large proportion of the intended population. Digital solutions show potential for providing wider access to fall preventive exercise. However, there is a lack of knowledge about how to reach the target group. The aim of this study was to describe the recruitment process used in the Safe Step randomis
The development of ultrafast dynamic contrast-enhanced (UF-DCE) MRI has occurred in tandem with fast MRI scan techniques, particularly view-sharing and compressed sensing. Understanding the strengths of each technique and optimizing the relevant parameters are essential to their implementation. UF-DCE MRI has now shifted from research protocols to becoming a part of clinical scan protocols for bre
Peritoneal dialysis (PD) uses the peritoneal membrane for dialysis. The peritoneal membrane is a thin layer of tissue that lines the abdomen. The lining is used as a filter to help remove extra fluid and poisonous waste from the blood. Everybody is unique. What is normal for one person’s membrane may be very different from another person’s. The kidney care team wants to provide each person with th
This thesis investigates principal terms that are pertinent specifically to the visual character of architecture. In common terminology such as order, complexity, variation, monotony, and contrast. By surveying recent public debates it is deduced that both laymen and professionals lack the sufficient language to establish common ground. By a doctor-patient metaphor it follows that no remedy can be
Inom industrin används många typer av värmekällor. Det kan vara öppna lågor, IR strålning, resistiv uppvärmning eller induktionsvärmning. Induktionsvärmningen är en värmingstyp med hög energidensitet, låg investeringskostnad, snabb uppstartstid och hög flexibilitet. Ett serieresonant induktionsvärmningssystem består i sin enklaste form av en växelspänningskälla, en spole, en kondensator och objektMany different types of heat sources are used in the industry. Some of these are open flames, IR-radiation, resistive heating and induction heating. Induction heating is a heating technology that have a high energy density, fast start up times and high flexibility. A simple series resonant induction heating system consists of a voltage source, a capacitor, an inductor and the object to be heated.
This master thesis investigates material characterization by reflection and transmission of electromagnetic waves in the 40-60 GHz band (millimeter-wave spectrum) for different materials. The free-space measurement method is a fast, efficient and non-destructive way of examining a material and is being researched by both academics and industries. The theory of how electromagnetic waves interact w
The SABR model has for a long time been an invaluable tool for capturing the volatility smile and to price nancial derivatives not quoted in the market. However, the current negative rate environment in the EUR market has led to numerous challenges for nancial institutions. One of the most problematic issues is that the SABR model used for volatility interpolation and extrapolation fails when rate
Syftet med denna framställning är att, mot bakgrund av att arvsrätt existerar inom äktenskap, undersöka om sambors avsaknad av arvsrätt är motiverad samt att diskutera sambors efterlevandeskydd de lege ferenda. För att uppnå syftet undersöks efterlevandeskyddet för sambor respektive makar, hur efterlevandeskyddet för sambor kan stärkas, hur sambors avsaknad av arvsrätt är motiverad och till sist hThe purpose of this thesis is to investigate whether or not it is justifiable that cohabiting partners don’t inherit from each other, given that married couples do. Furthermore, I am going to discuss cohabiting partners’ provision for surviving lex ferenda. Towards this purpose I will look into current survivorship legislation that affects cohabiting partners as well as married couples, how it can
Sandvik SRP has earlier studied a new way of calculating the cost in crushing and screening the results was a satisfactory, Sandvik SRP is now ready to go further in this study. The purpose of this study is further develop of the earlier adopted generic cost model earlier developed by Heyman and Lindström in order to calculate the cost per metric ton within the world of crushing and screening. By
Rivers have been modified significantly during the last 200 years in Switzerland. These modifications were done for protection purposes (protection against floods), construction of hydropower plants, gain of land or other human activities. These artificial transformations have reduced, sometimes drastically, the natural dynamic of the rivers, which has reduced biodiversity, and has also increased
Ökandet av den svenska kollektivtrafiken medför att fler busshållplatser behöver byggas och allt flera befintliga busshållplatser måste underhållas. Svårigheter och diskussioner som dyker upp är planeringen av drift- och underhåll på busshållplatsernas vägbeläggningar samt val av egenskaper till dessa. Orsaken till svårigheterna är att beläggningar ofta får skador och defekter såsom spårbildning, The increase of the Swedish public transport causes more bus stops to be built and more existing bus stops to be maintained. The difficulties and discussions that crops up associated with the increasing public transport is the planning of operation and maintenance of bus stop pavements surface and the choice of properties to them. The reason for the difficulties is that damages and defects, such a
Previously developed methods to evaluate FED and FEC level via combination of CFD and evacuation simulation have been verified by new features of FDS6 and extended to fire cases involving common building materials. The FED levels calculated by the conversion factor [1] based on carbon monoxide are compared with the direct calculation by way of mass fraction of carbon monoxide, hydrogen cyanide and
