The project ?Investment proposal for grinding station for service work of screw feeders? has been performed during the spring semester 2014 for the course Bachelor?s thesis for degree of  Bachelor of science in machine engineering at Karlstad?s University. The project has been performed in cooperation with Fiber Workshop which is a service department in the company Valmet AB. Valmet AB is a company that develops and manufacture soft paper tissue machines. The screw feeder is a part that is used to feed, and squeeze out the water out of woodchips.

Introduction: This study aimed to investigate the validity and reliability of the 20m multistage shuttle run test (MST) for elite ice hockey players as a predictor of the maximal aerobic capacity and the how the result is affected by the players age, aerobic and anaerobic capacity, body composition and test surface. The purpose of this was to find out the potential of the 20-m shuttle run test as a measuringtool for the maximal aerobic capacity in frequent testing periods during the season. It is very interesting to be able to administer this easily because the competative phase of the season is very long compared to the pre-seasonal phase and earlier studies have shown that the aerobic capacity is being lowered during this competative phase of the season for elite icehockey players.Methods: 34 elite ice hockey players participated in this study (20.0±3.6 yrs, BMI 24.2±1.6 and VO2-max 58.0±4.8 ml O2?kg-1?min-1). During 3-5 days they underwent 2 MST tests (wood and rubber surface), treadmill running with VO2-max assessed with open-circuit technique, Wingate10% and FFM-assessment with underwater-technique.

In the beginning of the 1990s the responsibility for the schools shifted from the government to the local authorities. This started an era with a freedom of choice for students where they themselves could choose which school to go to. The new system also opened up the possibility for independent private schools to exist side by side with local authority held schools. The overall aim of this study is to determine the factors that affect the location of these independent schools and the geographical pattern these independent schools create. The study in this paper is based on materials from statistics and interviews.

At the end of April 1986 reactor number 4 of the nuclear power plant at Chernobyl explod-ed and large amounts of radioactive particles were then released into the atmosphere due to both the explosion as well as the consecutive fire of the graphite core. A cloud of radioac-tivity was spread over the northern hemisphere, including Sweden, due to the prevailing wind directions. The radioactive particles were washed out from the cloud by rain and snowfall in some areas of Sweden and deposited on the ground. The deposited radionu-clides, primarily cesium and iodine isotopes, were later absorbed into the soil and taken up by the roots of the plants. Some of these radionuclides, like 137Cs, still persist in some of the terrestrial ecosystems at relatively high Concentrations which lead to contamination of the meat of moose, roe deer and wild boar even today.The two municipalities Heby and Uppsala, in the eastern part of central Sweden, experi-enced a relatively large deposition of 137Cs which resulted in high levels of 137Cs in moose and other game.

In connection with Henriksdals wastewater treatment plant (WWTP) a smaller plant is situated called Sjöstadsverket where new methods for wastewater treatment are tested and evaluated in different process lines. On one of the lines experiments with enhanced biological phosphorous removal (EBPR), have been carried out to evaluate if it is a good alternative to traditional chemical phosphorus removal. This thesis evaluates the results from the experiments conducted during fall 2005.The incoming water from Hammarby Sjöstad consists of only household wastewater, which gives a wastewater with high Concentrations of nutrients and organic carbon. This is partly positive, because one of the limiting factors for effective biological phosphorus removal is the lack of easily biodegradable organic carbon. The high Concentrations of ammonium and phosphorus demand a high reduction to achieve the requirements of outgoing Concentration.To optimize the process experiments with different recirculations and different aeration techniques have been made.

The purpose with this study was to investigate how the behaviour and physiological parameters differ between high ranked and low ranked cows, and between cows in an automatic milking system verses conventional milking parlour. The study was carried out at the Kungsängen research Centre, Department of animal nutrition an management, Swedish University of Agriculture Sciences, Uppsala. Twelve cows, the six highest and the six lowest in social rank were selected from the automatic milking system for the experiment. Ten cows, the five highest and five lowest in social rank were selected from the conventional system. Blood samples were taken during milking and resting.

Enligt en erkänd hypotes, mutant selection window hypothesis, uppstår och upprätthålls antibiotikaresistens hos bakterier endast då antibiotikakoncentrationerna ligger över minimum inhibitory Concentration (MIC)-värdet för en känslig, omuterad population. Det här skulle innebära att de låga antibiotikakoncentrationer man finner i miljön inte borde bidra till att upprätthålla resistens. Redan subinhibitoriska antibiotikakoncentrationer har dock visat sig ha effekt på bakterier genom att t.ex. öka mutationsfrekvensen hos bakterier, selektera för resistenta mutanter och ge upphov till nya sådana. Syftet med den här studien var att undersöka om en selektion vid låga antibiotikakoncentrationer sker också in vivo.

Uppsatsen hade sin utgångspunkt i hur lärarens val av matematikdidaktik skapade möjlighettill pedagogisk och social delaktighet, för elever som hade uttalade koncentrationssvårigheter.Denna definition innefattade elever som uppvisade svårigheter att genomföra och slutförauppgifter och elever som inte behövde ha en fastställd diagnos. Jag har även valt att studeraelevernas möjlighet till måluppfyllelse beroende på lärarens didaktik och måluppfyllelsenutgick ifrån strävansmålen för ämnet matematik.Studien innefattade observationer under tre lärares matematiklektioner i klasser på högstadiet.Efter observationerna har sedan intervjuer med lärarna genomförts. Resultatet visade attrespondenterna gemensamt var övertygade om att läraren som person hade en stor inverkan påelevernas lärandeprocess samt möjlighet till delaktighet och måluppfyllelse i undervisningen.Däremot valde respondenterna olika motiveringar som stödde denna åsikt. Meningarna bestodav ett vitt spektrum från lärarens personlighet till didaktikens innebörd. Lärarens reflektionkring val av didaktik samt elevsyn inverkade på elevernas möjlighet till utrymme iundervisningen för måluppfyllelse och delaktighet.

StoraEnso decided in year 2002 to build a pulp mill in the province of Guangxi, southernChina, and also establish eucalyptus plantations to provide it with raw material. By 2010StoraEnso controls about 90 000 of planned 120 000 ha, out of 75 000 ha is already plantedwith Eucalyptus.By using better genetic material, improve the tending, selecting the sites more careful and byusing a proper fertilization regime StoraEnso hopes to increase the mean annual incrementfrom today?s 25 m3/ha, on bark, to 35 m3/ha. This study is one part in this work to increase themean annual increment in the plantation.This master thesis is the forth in a series, that has followed up a fertilization trial that startedin spring 2006 when the trial was laid out and treatments decided. The aim with the trial is toexamine the production potential of Eucalyptus urophylla in Guangxi, southern China.

X-ray fluorescence (XRF) detection of heavy metals is a cost- and time-effective method for investigation of polluted areas. Compared to laboratory analysis, XRF analysis is limited by high detection limits and uncertainties in some situations. Preparation of samples is known to affect the results of measurements.The purpose of this thesis is to bring a deeper understanding of how different factors affect the results of XRF-analysis. A large number of measurements have been made with the instruments Niton XLt 700 and Niton Xli 700. Results from measurements of lead, zinc and copper have been analysed.This study has shown that a greater moisture content will give a lower measured Concentration for the same sample.

The price trend on rapeseed the latest years has led to an increasing interest to grow the crop among many farmers in Sweden. The price trend has resulted in more than a doubling of the oilseed area since the early 2000s. For many farmers it is an advantage to increase cultivation of rapeseed because of the high proportion of cereals in the crop rotation on many farms, but it is not just benefits. The risk of the fields being infected by clubroot increases within frequent rapeseed cultivation and it often leads to subtantial economic losses. Clubroot is caused by Plasmodiophora brassicae that is a soilborne pathogen in genus Protozoa and its resting spores can be found in the soil for up to 18 years.

Master Thesis in Business Administration, School of Business Administration, Linaeus University, Finance 4FE03E, Spring 2011Authors: Benni Hansson, Axel SandquistTutor: Christopher von KochExaminer: Sven-Olof CollinTitle: Compensation as a means of monitoring or recruiting ? a study on ownership structure in Swedish listed companies.Keywords: CEO compensation, compensation structure, ownership structure, ownership types, ownership Concentration, agency theory, resource dependence theory, managerial theoryBackground: There has been extensive research on CEO compensation, however not a lot on Swedish listed firms. Many studies have an agency theoretical perception on CEO compensation. In accordance with this, compensation is used as a means to solve monitoring and incentives problems.Purpose: The aim of this study is to examine the role of CEO compensation, by studying ownership structure.Method: To examine the role of CEO compensation we use a multi-theory approach, based on agency theory, resource dependence theory and managerial theory. The companies examined are Swedish listed firms the in years 2005 to 2009.

In order to optimize calf welfare and health it is important to know the behavior of cattle in free ranging conditions. When the cow is about to give birth to a calf she will leave the heard about 12 hours before. It is then rather obvious that isolating the cow about calving time in a single pen is imitating the cows? natural behavior. To save space and minimize building cost it?s common that the farmers build calving pens for four of five cows especially at larger farms.

Introduction: A job interview is for both the candidate and the company involved, an importantsituation. It might be tempting for the candidate to adjust the answers to the job in question or what heor she thinks the recruiter wants to hear. This behaviour is a part of what socialpsychology would callimpression management. This term means that you try to control the impressions you send out andaccordingly adjust your behaviour for the current situation.Purpose: Candidates usage of impression management is a widely debated subject where theresearch mainly has focused on the candidates, their strategies and the efficiency of impressionmanagement. Our purpose with this thesis is therefore to see how recruiters experience candidatesimpression management in a job interview, how they handle it and what level of acceptance they havefor it.Theoretical perspectives: The theories and previous research used as models for explanation andbasis for discussion is mainly Erving Goffman´s (1974) dramaturgical perspective and thoughts aboutimpression management and Mark R Leary´s (1995) theories concerning impression managementtactics.

Amyotrophic lateral sclerosis is one of the major neurodegenerative diseases, causing an ascending paralysis that usually kills the patient within a few years from disease onset. The motor neurons show aggregates of proteins which in approximately 20 % of cases of the familial form contain mutated SOD1 protein. Trehalose is a disaccharide which has been shown to reduce protein aggregation and increase viability in cell models and alleviate symptoms in animal models of several neurodegenerative diseases associated with protein aggregation. When given orally to the SOD1G93A mouse model of ALS, trehalose failed to slow down the disease progression, which has led to questions about the uptake and distribution of the molecule in this mouse strain. The aim of this study was to investigate whether significant levels of trehalose reach the central nervous system of the SOD1G93A mouse after oral administration. This was performed by a trehalose assay of the brain of trehalose treated animals. A glucose assay was optimised for use in small samples of brain lysate after the digestion of trehalose into glucose by trehalase, and the difference in glucose Concentration before and after digestion represented the trehalose level.