Sökresultat

Popular Abstract in English This thesis concerns experiments of heat transfer in a rectangular channel with ribs and an obstacle. Liquid crystal thermography (LCT) is used to record the temperature fields in the experiments. LCT is based on measurement of the color response of a heated surface. When illuminated with a white light, the liquid crystals react to temperature changes by changing color,This thesis presents experimental investigations of local heat transfer in a rectangular channel (aspect ratio AR = 4) with continuous transverse ribs as well as an obstacle. Liquid crystal thermography (LCT) is employed to obtain the temperature fields in the heat transfer experiments. The liquid crystal applied here has a red start at 35°C and a bandwidth of 1°C. The work consists of (1) periodi

Soil functions can be classified as supporting (nutrient cycling) and provisioning (crop production) ecosystem services (ES). These services consist of multiple and dynamic functions and are typically assessed using indicators, e.g. microbial biomass as an indicator of supporting services. Agricultural intensification negatively affects indicators of soil functions and is therefore considered to d

Soil biodiversity through its delivery of ecosystem functions and attendant supporting ecosystem services-benefits soil organisms generate for farmers-underpins agricultural production. Yet lack of practical methods to value the long-term effects of current farming practices results, inevitably, in short-sighted management decisions. We present a method for valuing changes in supporting soil ecosy

Synchronized activity is common during various physiological operations but can culminate in seizures and consequently in epilepsy in pathological hyperexcitable conditions in the brain. Many types of seizures are not possible to control and impose significant disability for patients with epilepsy. Such intractable epilepsy cases are often associated with degeneration of inhibitory interneurons in

The effects of combustion phase and fuel on smoke particle emissions from a wood stove operated with three different wood fuels and from a corn stove were investigated. A single-particle mass spectrometer (aerosol time of flight mass spectrometer (ATOFMS)) was used for time-and size-resolved chemical signatures and a scanning mobility particle sizer (SMPS) was used for online mobility size distrib

Conclusions. Preoperative gentamicin in combination with vestibular 'prehab' offers a possibility to reduce postoperative malaise and speed up recovery and may be used for patients undergoing such surgery when there is remaining vestibular function. Objectives. Removal of pontine angle tumours in a patient with remaining vestibular function causes symptoms of acute vestibular loss. A simultaneous

Popular Abstract in Swedish Ämnet för denna tematiska och berättartekniska studie i litteraturvetenskap är C. J. L. Almqvists slottskrönika och det indirekta skrivsättet. Slottskrönikan omfattar romanerna Jaktslottet (1833), Hinden (1833) och Baron Julius K*. Ur Fröken Eleonoras Reseminnen (1835), vilka belyses med hjälp av Almqvists uppsats Om två slags Skrifsätt (1833). Denna infogades senare i The subject of this thematic and narrative-technical study is the Swedish author Carl Jonas Love Almqvist's (1793-1866) slottskrönika (castle chronicle) and the indirect way of writing. The castle chronicle comprises the novels Jaktslottet (The Hunting Castle; 1833), Hinden (The Hind; 1833) and Baron Julius K* (1835), all of which are included in Almqvist's great collective work, Törnrosens bok (T

In Vietnam, practical settlement of criminal cases tends to indicate that incorrect judgments still exist that naturally prejudices the legitimate rights and interests of citizens, including the right to have defense counsel. This results from various causes, of which the overlapping and contradictory nature of the laws is one. This dissertation focuses on examining the contents of the applicable

Recent research has shown that agricultural management affects microbial biomass and community composition. We investigated the functional implications of such effects in terms of barley biomass production and nutrient acquisition, and whether changes in barley nutrient status affected aphid fecundity. Soils were collected from conventional, ley and organic arable fields and used as inocula in a g

Shredder residues of end-of-life vehicles and white goods are a complex waste stream, which nowadays most often is disposed of at industrial landfills. This paper describes the most important findings concerning the complex composition of the landfill leachate and its on-site, year-round treatment under cold-climate conditions. A 3-year investigation has confirmed that concentrations of different

A key challenge in developing sustainable cities is establishing circular infrastructure systems. Decentralised urban water management solutions (DUWMS) are a case in point: Innovative DUWMS that allow recycling the water, heat, energy, or nutrients contained in wastewater locally are currently emerging in cities around the world. These systems could significantly enhance cities’ water resilience

Abstract Study regionThree mid-high latitude catchments include the Krycklan (Boreal Sweden), the Danube (Central Europe) and the Mississippi (USA).Study focusWe develop a hybrid eco-hydrological framework that couples the process-based terrestrial ecosystem model LPJ-GUESS (Lund-Potsdam-Jena General Ecosystem Simulator) with five machine-learning (ML) algorithms through two hybrid model structure

Populärvetenskaplig sammanfattning: Krkonoše national park är beläget i Sudeterna vid gränsen mellan Tjeckien och Polen. Parken karakteriseras av stora variationer i altitud och ett mosaikliknande vegetationsmönster. Det komplexa landskapet medför svårigheter vid val av klassificeringsteknik och skala för produktion av tillförlitliga markanvändningskarteringar. Denna studie syftar i första hand tiThe Krkonoše National Park is located in the Sudetes mountain range at the Czech - Polish border. It is characterized by large variations in altitude and a mosaic vegetation pattern. The complex landscape raises the issues of appropriate classification techniques and scales. The first aim of this study is to produce a land cover map using 21 classes based on a rule-based classification system and

Klimatanalysen av ett av Skånes största företag inom jord- och skogsbruk visade att kor är klimatbovar och att skogen kan hjälpa oss att sätta dit dem. Under många år har forskarna förutspått att uppvärmningen till följd av människans utsläpp av växthusgaser kan få dramatiska konsekvenser. En global ökning av temperaturen ökar förekomsten av extrema väderfenomen som stormar, skyfall och torka. I SThe Intergovernmental Panel of Climate Change (IPCC) estimates global warming caused by anthropogenic emissions of greenhouse gases (GHG) to 1.1-6.4 º C in the year 2100. Agriculture is the source of 10-12 % of the global GHG emissions. Forests and other terrestrial ecosystems estimated to provide a sink affected by land use management. In this study, I estimate the sources and sinks in agricultur

Background: A major challenge of today is to protect the marine ecosystem from a total collapse. Overfishing, illegal, unregulated and unreported fishing, climate change in the sea, coral bleaching, ocean acidification, marine pollution impacts of coastal development, exotic and invasive species and last but not least all the cumulative impacts, are just some of the factors degrading our marine en

Popular Abstract in Swedish Det är ofta fördelaktigt att i olika sammanhang representera våra observationer av verkligheten med en följd av tal. Så skilda exempel som ljud, bilder, hjärnvågor, havsvattenvågor, jordbävningar och aktiekurser kan låta sig beskrivas av följder av tal. Man kan med fördel föreställa sig följden som en uppritad graf, där den horisontella axeln beskriver tidpunkten för mäThe theory of stochastic time-frequency analysis of non-stationary random processes has mostly been developed for processes in continuous time. In practice however, random processes are observed, processed, and interpreted at a finite set of time points. For processes in continuous time, the ambiguity domain has interesting properties which makes it particularly useful. One such property is that t

Physiological and psychosocial factors might contribute to differences in weight loss, eating behaviour and health-related quality of life (HRQoL) after bariatric surgery. The aim of this study was to investigate how perceived control over eating changes after bariatric surgery and whether it affects outcome in super-obese patients. In a retrospective analysis of a prospective study (n = 60), 49 p

Nanotechnology gives us materials with enhanced or completely new properties. At the same time, inhalation of manufactured nano-objects has been related to an array of adverse biological effects. We characterized particle emissions, which occurred during maintenance of common metal nanoparticle generators and contrasted the properties of the emitted particles with those originally produced by the

Popular Abstract in Swedish Avhandlingen består av tre essäer som behandlar effekterna av inkomplett information i de finansiella marknaderna. Av dessa essäer är två teoretiska och en är huvudsakligen empirisk. Samtliga essäer undersöker effekterna av parameterosäkerhet, och de använder sig av kontinuerliga modeller. Den första essän, "The Effect of Information Quality on Optimal Portfolio ChoiceThis thesis consists of three essays on incomplete information in financial markets, two of which are theoretical, and one that is mainly of an empirical nature. All three essays concern parameter uncertainty, and they employ a continuous-time framework. The first essay, "The Effect of Information Quality on Optimal Portfolio Choice," analyzes the portfolio choices made by three types of agents,

Abstract Background: During the period 2000-2010, the majority of the Swedish populations’ savings were in equity funds. The consequence of households increased savings in stocks has resulted in a growing market for stock recommendations. However, whether analysts’ stock recommendations are reliable or not has been discussed for eight decades, ever since Alfred Cowles pioneering study “Can stock m