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The influence of the initial composition of an algal-bacterial microcosm constituted of Chlorella sorokiniana and Ralstonia basilensis was tested for the fed-batch degradation of salicylate at 5 mM. Salicylate degradation was always limited by the O-2 generation rate, which was initially proportional to the algal density, but rapidly became limited by the availability of light once the algae start
Objectives: The aim of the present study was to analyze the effect of an enhanced systematic dose of nicotine on osseointegration of titanium implants. Material and methods: Sixteen female rabbits received either nicotine ( n = 8) or saline ( n 8) administered subcutaneously via mini-osmotic pumps for 2 months. The pump delivered 6 mg/kg/min of nicotine for the animals in the test group. Blood was
The leaching process when water attacks concrete, and the effect of leaching on the strength and durability of a concrete structure, is analysed theoretically. Technique for prediction of the future leaching and structural stability is outlined. The analysis is to a certain extent supported by data from literature. The leaching process is divided in five different types: 1: Pure surface leaching 2
As the processing power of computers continuously increase so does the interest for machine learning and artificial intelligence. This thesis evaluates the forecasting performance of both machine learning models and common auto-regressive models on the Swedish stock market index OMXS30 on the Stockholm stock exchange during the 2008 financial crises. Forecasts are performed 3, 6 and 12 months ahea
Four model solid state compounds were used to experimentally investigate the effects of pressure on the interactions in one- and two-dimensional Heisenberg magnetic models. BaCuSi2O6, BaCu2V2O8, SrCuO2 and CuGeO3 were successfully synthesized via solid-state reactions and characterized via x-ray diffraction. BaCu2V2O8 was additionally characterized via spectroscopic techniques to confirm the oxida
This thesis aims at exploring how reality is covered in the news media, by employing the murder of Edwin Arrieta, perpetrated by Daniel Sancho, as a case study. This particular incident was selected due to its extraordinariness and extremity, which made it the perfect base for this analysis both because of the richness of the material – exemplified in the 33 articles that composed the final sample
This paper explores the role of the Swedish central bank in relation to the profitability of commercial banks. Utilizing local projection analysis, we examine the effect of policy rate and quantitative easing shocks from 2000 to 2023. Our study yields nuanced findings compared to the existing literature. In contrast to earlier studies, our findings indicate a negative effect of the policy rate on
Following the structural transformation process in the 1990s, the government of Saxony set its hopes on the microelectronic cluster in its region to foster regional development and international competition. It is uncertain whether the cluster of Silicon Saxony has managed to meet these expectations. By comparing the cluster to four other major microelectronic clusters in Europe, the study assesse
This thesis aims to investigate the relationship between the level sustainability and the level of risk for mutual equity funds. As the demand for more sustainable investment options increases, mutual funds have become more aware about positioning themselves as sustainable. The thesis studies 61 mutual equity funds using the Morningstar Sustainability Rating-score with a five-year daily data set,
This thesis looks at the effects a coffee cooperative in the municipality of Salgar has on its member farmers, and its implication for rural development in the region. Coffee cooperatives have become important strategic institutions within the coffee sector in the country, instigated by the National Coffee Growers Federation. It is the only agricultural sector in the country where farmers can be g
Football is getting more and more connected to business as well as economics by each day. Almost annually, a transfer record or an all-time-high sponsorship deal is signed. This essay will attempt to take an economic point of view on the footballing industry and try to analyze whether a relationship between seven chosen macroeconomic variables and the UEFA coefficient can be observed and defined.
Abstract With high poverty and inequality rate, the Government in Brazil have adopted several social assistance programs and strategies in the fight against the ever growing rate of poverty and inequality within it’s population since the 1990s. In recent years, the Bolsa Familia Program have been a major social assistance program in Brazil, and the program have affected more than 13 million poor h
Abstract Breast cancer is a disease which affects a large part of the population and is today affecting approximately 1.7 million women worldwide. During the last decade, it has been confirmed that the metastatic ability of cancer is due to cells that detach from the primary tumor and spread to other sites in the body via directed migration. Another aspect which has gained a lot of attention is
It is recommended that the hip joints be flexed to 90 degrees during dual-energy X-ray absorptiometry scanning of the lumbar spine in the anteroposterior projection; however, some patients are unable to maintain this position because of the presence of degenerative changes in lower limb joints. This study examines the effect of a lesser degree of hip flexion on the lumbar spine bone mineral densit
Plumage ornamentation often signals the quality of males and, therefore, female birds may choose elaborately ornamented mates to increase their fitness. Such mate choice may confer both direct and indirect benefits to the offspring. Males with elaborate ornaments may provide good genes, which can result in better nestling growth, survival or resistance against parasitic infections. However, these
The solvent-induced transition between self-assembled structures formed by the peptide AAKLVFF is studied via electron microscopy, light scattering, and spectroscopic techniques. The peptide is based on a core fragment of the amyloid beta-peptide, KLVFF, extended by two alanine residues. AAKLVFF exhibits distinct structures of twisted fibrils in water or nanotubes in methanol. For intermediate wat
In this paper we consider the distribution of the product of a Wishart random matrix and a Gaussian random vector. We derive a stochastic representation for the elements of the product. Using this result, the exact joint density for an arbitrary linear combination of the elements of the product is obtained. Furthermore, the derived stochastic representation allows us to simulate samples of arbitra
Lichen cover and diversity were analysed on the dwarf shrub Helianthemum oelandicum (L.) Dum.Cours. at one site in the calcareous grassland of the area known as the ‘Great Alvar’ on the Island of Öland, Sweden. The age of 22 phorophytes was determined by ring counting and varied from 8 to 41 years and was accurately predicted by the root diameter. A total of 18 lichen species was found, with a ran
