The background for my thesis is the fact that with rising electricity and oil prices it becomes interesting to calculate on alternative heating systems. I have chosen to calculate upon my parents? farm, which today heats the dwelling house with wood. This is very time-consuming work, time which could be spent on other work. The main objective for this study is to compare three different heating systems to decide how they differ considering effort and cost. The result from the calculations was that grain-heating system demanded the least amount of work, but the total cost was a little higher compared to chips heating. Chips heating required half as much work as today?s wood heating and had a little lower total costs compared with the corn heating. Which system to choose largely depends on how the own work is valued.

The purpose of this thesis was to study Holmen?s possible future ownership, concerning their forestland in Sweden. We have compared the strategy of the present owning of forests with three different alternatives. These three alternatives are: 1) selling all the forestland, 2) establish a new company which owns the forest where Holmen is the major stockholder and finally 3) an alternative were the two northerly regions are sold. We used Holmen?s annual account from the year 2002 as a bare year and made a reconstruction of the annual account in the three different alternatives.

Hydropower is an important source of energy in Sweden and accounts for about 46 % of the total energy production. Sweden has about 1 200 hydropower plants and with the intention of raising the pressure head of the water and to store water, dams are built by the power plants. The storage reservoirs make it possible to adjust the energy production by demand and season. Dams in connection to the reservoirs are subjected to additional loading during periods of high floods or when an icecap in the winter is formed on the reservoirs. In order to maintain the dam safety, the power companies in Sweden are working with guidelines for dam safety from RIDAS.

This project is based on my fathers farm which lays outside Löberöd, twenty kilometres south of Eslöv in Skåne. While my family for some time have thought about building a new milkingstable with AMS(Automatic milking system) I decided to compare the AMS with a conventional milkingstable. We are abit concerned about how many cows we should have in the new stable. Because of that I calculated with two different number of cows. I have compared three different types of milking stables: One alternative is 180 cows milked in a double eigth hearing bone milking stable. The second alternative is 128 cows milked with two DeLaval VMS-robots. The third alternative is 171 cows milked with three DeLaval VMS-robots. One salesman from DeLaval and one salesman from A-betong helped me to get marketprices on the milkingrobots, building, ventilation and prices on all the concrete. In all the costs labour is included. The rest of the costs are calculated in a softwareprogram called K-data 03 which is a program with predicted costs. The calulations from the program showed that the price in the milkingpit system was 51 000 sek per cow.

The Goal with this Master of Science thesis is to expand the possible turbine efficiencymeasurements on an exhaust turbocharger. It was done as a part of the CICERO competencecentre. To feed the turbine with air a special flow rig has been used. Instead of loading theturbine by just restricting the compressor flow a docking system for an electrical dynamometer isdesigned to use the dynamometer as an additional loading source. By using an electricaldynamometer as loading device for the turbine, measurements are not depending on compressorperformance.A large part of the work consists in designing accessories for the dynamometer.

In Sweden, the eutrophication of lakes, water courses and the coastal areas is considered the major threat to aquatic ecosystems and therefore actions taken to reduce the nutrient load to aquatic system including the Baltic Sea has high priority. There are many different sources of phosphorous and nitrogen and domestic wastewater is one contributing factor to the high load. Especially waste water from households that is not connected to municipal sewage treatment or a local small scale plant with appropriate nutrient removal efficiency is considered a problem. These types of households are quite common in rural areas in Sweden and in areas where summer houses has been converted to permanent living. Swedish legislation now permit the municipalities to decide in which areas within the municipality higher demands of the local small scale treatment facility should be met by the households (i.e.

Cultural objects may become wet by deliberate water cleaning, water disaster or watersoaked for other reasons. Air drying textile objects and even other organic materials from awater wet state, involves many problems depending on the strong capillarity action of water.Damages and changes such as bleeding of dyes, stains or lines of impurities from watermovement, shrinking or stiffness can occur. Freeze-drying as an alternative drying methodhas often been used for wet archaeological and marine objects, but more seldom for historicalmaterials.This bachelor thesis addresses the issue of whether freeze-drying can be an alternative controlleddrying method for historic costumes. Costumes and related objects are often compositeobjects, consisting of multiple materials, as well as being three dimensional, all of whichwill complicate drying. The purpose of this study was to investigate whether it is possible tohandle costume objects after wet cleaning for drying by freeze-drying, and if damages due tosurface tension of water, can be avoided in this way.

The project contains a force analysis of the vertical axis wind turbine Lucia's supporting arms and a measuring device to experimentally measure the forces is made. The forces between the supporting arms and the tower are calculated theoretically and then simulated by a computere. A measuring devise is then designed to measure the forces experimentally. The forces acting on the attachment between the supporting arms and the tower is primarily the centripetal force, gravitational force and the aerodynamic forces on the rotor wings. The maximum forces were theoretically calculated and is 13.38 kN along the x-axis, -0.25 kN along the y-axis and then 0.5 kN along the z-axis.

Regulations on the exhaust emissions of HD-diesel engines are becoming more and more stringent, and therefore, emission after-treatment systems are commonly used. These systems rely on catalytic conversion of NOx,CO , and HC emissions, and are thus dependant on temperature. At low load of the engine, exhaust temperatures are not sufficient for the after-treatment components. Therefore, means to increase the exhaust temperature while maintaining low emissions and fuel consumption are needed.The focus of this project has been to develop strategies for the lift profiles of exhaust and intake valves in the engine, with the goal to raise exhaust temperature in combination with low emissions and fuel consumption. The strategies have been tested in a single-cylinder research engine equipped with a hydraulic variable valve actuation system.

Detta examensarbete utgör resultatet av en studie på uppdrag av Volvo Cars Torslanda (VCT) i Göteborg. Syftet med studien har varit att undersöka produktflödena mellan VCT och dess leverantörer med hjälp av analyser. Dessutom utreds hur transporterna skulle kunna optimeras och vilka konsekvenser som uppstår. Beräkningar, diskussioner och analyser resulterar i rekommendationer för företaget.För att få mer kunskap om transportlogistik, produktionsekonomi och miljöpåverkan av transporter genomförs först en litteraturstudie. En granskning av nuläget beskriver hur situationen ser ut i dagsläget och ger även en detaljerad bild av flödena från leverantörer till VCT.Sex stycken flöden vars gods transporteras från leverantörer till VCT har undersökts.

There are many elderly buildings, particularly those constructed during the million program, in need of renovations and plumbing replacement. An alternative to the traditional plumbing replacement is the relatively new and untested technique called relining. The purpose of the study is to thoroughly investigate the different types of relining that are currently available on the market to help enhance Peab?s knowledge before purchasing relining services. The theoretical part of this report is based on relevant information provided from companies, previous studies, investigations and reports within the area.

During the last decade the conditions for the music industry have been changed significantly. With the dropping sales of physical phonograms and the increasing illegal file sharing, the record labels have been forced to adapt and thus seek alternative sources of income next to the traditional sales of phonograms. Our purpose was to investigate how smaller Swedish record labels adapt themselves to the changing environment within the music industry and which new alternative sources of income they can use to finance their music production. To do this we used a deductive approach where we started by researching theories we thought were relevant to the subject, which we then used to get valuable information out of our informants.From our empirical investigations it appears that the independent record labels are rather positive about the future and that they will be able to survive, even though they will have to change their ways of working to a large extent. Our results show that the record labels as we know then will disappear.

Förmågan att prestera under akut eller kraftig stress är en förutsättning för en del yrken. Forskningsresultaten gällande hur stress påverkar prestation pekar åt olika håll. Denna studie undersökte sambandet mellan fysiologisk arousal och kognitiv problemlösningsförmåga under stress. Trettiotvå polisstudenter testades på Ravens test av flytande intelligens APM set II både före och efter att antingen ha sprungit i tjugo minuter eller haft en självskyddslektion på ca fyrtio minuter. Resultaten från en mixed ANOVA för beroende mätningar visade på en signifikant interaktionseffekt (F (30) = 6,547, p < 0,05) ? en ökning i prestationen hos självskyddsgruppen med arton procent och en minskning med femton procent hos löpningsgruppen.

AbstractThe purpose of this study were to examine the appeal that reaches the county administrative court regarding cases within The law of support and service to some disabled (LSS) the third "alternative" with the effort personal assistant. We have gathered 280 cases from seven different county administrative court and from our selection 19 of the cases remained.These 19 cases became our starting point for our study and they have been interpreted through Foucault´s and Skau´s interpretation frame regarding power and Payne´s social constructivism to try and answer our three questions at issue: How are the cases being handled by the county administrative court? What kind of cases leads to appeal? What similarity and differences are there between the cases? These questions have been answered one by one in a systematical order. Our result shows, among other things, that cases that involve certificates from occupational therapist or physiotherapist are the cases that win against the municipality in the county administrative court. Further we have found a new theme in our study regarding clientification among them who apply for efforts within LSS and "alternative" three.

How accessible is the city? Is there more factors than merely the strictly physical that affect how accessible the city is perceived? These questions are the starting point of this study. The greatest emphasis, in this study, is placed on the perceived parameters that affect us humans when we move in our cities. Experiences and internal images can change our behaviour and prevent free movement in the city. The result from this study shows that a city can not be seen as fully accessible unless both the physical and the perceived accessibility are fulfilled.