Every year, KTH participates in the Shell Eco Marathon, a competition whose goal is to design a vehicle that can go as far as possible using only the equivalent energy of one liter of petrol fuel. This year, one of KTH?s contributions to this race is the Agilis prototype; a car powered by a uniquely configured HCCI-engine developed at the university. The engine is dependent of several subsystems in order to work properly, among other, systems for cooling and lubrication.Combustion engines are in need of a cooling system that reduces the heat developed during the combustion. In general, two main types of cooling systems are employed; either air cooling, where the outside of the cylinder is exposed to a flow of the surrounding air, ore water cooling, where water flows in tubes around the engine, and the heat are transferred by the water to the surrounding air through a heat exchanger.The purpose of the lubrication system is to prevent the friction that builds up in the interference between moving parts in the engine.

The aim of this study was to examine the current and historic mercury(Hg) load of the lake Storjuktan due to its recent exposure to a local potential source of Hg in form of the Sulphide mine Blaikengruvan(2006) and an earlier potential sources of Hg-load, the damming of the lake(1960s). Sediments were extracted using a HTH-sampler, freeze-dried, and analyzed for tot-Hg, LOI and activity of 210Pb and compared to samples extracted prior to the opening of the mine(2006). Constant initial concentration (CIC)-dating model was used for dating the samples. Low levels of Hg (100ng/g) were found throughout the lakes sediment. The highest levels of Hg(220ng/g) was detected at a depth of 4-5cm dating back to the mid 1970:s, suggesting that increased levels of atmospheric Hg rather than damming of the lake has caused the increase of Hg.

The purpose of this paper is to find out which characteristics the female and male characters have in five selected horse books in children's literature. I have analyzed five horse books by Professor Maria Nikolajeva?s gender roles schedule. I have chosen to do a qualitative text analysis and the questions I chose to ask for the books are: Which characteristics does the girls and the boys have in the selected horse books according to Nikolajeva?s gender chart? What is the relationship between the main characters and the horse/horses according to the theories of Backman? What does the typical horse book look like today? What I come to conclusion in my paper is that all the horse books I analyzed have female main characters, and the girls in these books about horses take a lot of space and demonstrate themselves strong.

The thesis was done in collaboration with EAB situated in Smålandsstenar. In the initial discussion faze on doing a thesis with them there was a need to analyze and ensure the strength of an existing product, cantilever racks. This included performing FEM calculations on a model and comparing the results with physical tests.EAB has two models of cantilever racks, a light duty and a heavy duty. Within the heavy duty model series there are five product variants that differ in both size and load capacity. We will be working with the product variant with a load capacity of 1000 kg/arm which is the variant that is in the middle of the series.When we started work on the thesis we did a literature study and couldn?t find any well defined methodology that integrates both product development and computer aided design analysis.

Background: Today many companies are competing to get space in our minds. Companies spend a tremendous amount of money on building strong brands. It is not just about making us aware of their logo, today it?s more about giving the brand a ?soul? and to load it with different values. Due to today?s globalization there is also interesting to look at it from a cultural perspective.

This thesis serves to examine how manufacturing SMEs consider outsourcing. Furthermore, we aim to identify the main characteristics and patterns for these types of companies that can explain their rationale in such a decision. The chosen method for this thesis is abduction and selected research approach is multiple case studies. Seven case studies have been conducted at EAB AB, Esbe AB, Hörle Automatic AB, Pelly Industri AB, SGV Industrier AB, Swede-Wheel AB and Wulkan AB. Our findings have illustrated that although traditional outsourcing theory provides a good platform for explaining the rationale behind outsourcing decisions in SMEs, we have identified additional considerations that SMEs, operating as 2, 3 or 4-tier suppliers towards OEM-corporations, make.

The use of bio fuel is increasing every year. Nowadays you will find different alternatives to oil and electricity heating system. In this essay I have examined what the economic conditions are to invest in a bio fuel furnace. I have chosen to assume from a specific farm and do a case study on this farm. Malmvik farm is located just outside of Stockholm.

Phytoestrogens are secondary metabolites produced by plants. Among the plants that make phytoestrogens are soya, red clover and some types of grass. The name phytoestrogen is a collective term for compounds such as genistein, daidzein, biochanin A and formononetin. These compounds are similar to oestradiol-17? in their chemical structure.

The current standards for design of steel beams are divided into four classes based on the slenderness of cross-sectional parts. Depending on the section class a beams load capacity is either determined by a plastic, elastic or a reduced elastic model. The division between cross-sections calculated by a plastic and an elastic model is today done in a very harsh way with no smooth transition. This leads to a large difference in the calculated resistance for the sections located near the class limits. Elasto-plastic sections are in the current situation calculated as purely elastic and their large plastic reserve is not considered in the current standards.

The purpose of this thesis is to understand the reasons to why management consultants choose to leave their positions at large and established management consultant companies. The empirical data are made up of eleven interviews with men and women, both management consultants that have left their previous positions as well as a consultant who has chosen to stay with her first company and a representative from one of the large companies active within the management consultant industry. We have used the Job Embeddedness Theory combined with theories about identity, legitimacy, institutional norms and gender in order to understand the thoughts and reasoning behind the management consultants´ resignation. We have found that issues with the work itself and characteristics of the industry prevent the management consultants from being embedded within the management consultant company. Rather, some of the characteristics of the industry such as ?up or out? and the need to constantly perform work as a ?pushing-out mechanism?.

The essay deals with hierarchies that occurs between inmates in prison. It deals with a theory that these hierarchies, when seen through a gender perspective, can be understood as a hierarchy where you are valued based on traditional male characteristics. Empirically, the paper consists of interviews with five inmates, or former inmates, who during a period in his life, has served a prison sentence at a closed institution. Based on the informants' statements, conclusions are drawn about which properties are valued low in the hierarchy. This becomes clear when the informants speak humiliating about sexually deviant groups, snitches, or sex offenders.

The dissertation were performed on SP, Technical Institute of Sweden. The dissertation were carried out on the measurement technical department, this dissertation is a part of a bigger project, project ClampCal. One of SP?s returning assignments are flow-measurement. When flow-measurement is performed, the flow has to be stopped so that a meter can be installed in the pipes where measurement is going to take place. At every stop there is time delay in the flow which causes the customers to loose money. This is why SP wanted to find a better solution so that measurement can be done without any stops in the flow. Usage of a so-called Clamp-on meter was considered, but since the measurement uncertainty is too large it takes some investigation on the parts where the largest uncertainties occur and thus find a solution that can diminish the uncertainty as much as possible. The parts that were considered to have an opportunity to reduce measurement uncertainties were the fluid temperature, its characteristics and the pipe geometry and its characteristics. For the fluid temperature a Pt100-sensor with four different radii for various pipes was used.

The sun is a huge energy source with great potential of providing energy to the heating of homes and other buildings in an environmentally sustainable manner. In order to provide buildings with energy from the sun it is necessary to transfer the energy supply over time to when the demand arises. By storing the heat in a seasonal storage, solar energy from the summer can be used in the winter when the demand for heating is greatest.Today's existing plants are mainly in Europe and particularly in Germany. These facilities are designed to supply heat demands greater than 400 MWh and covers about 40-50 % of this need which consists of energy for space heating and domestic hot water. How much of the heat demand that is covered, the solar fraction, is partly due to losses from the storage which in turn is connected to the surface area of the storage.

As a consequence of increasing wind power installations in the Nordic grid the last years, the need for regulating power has become larger. In the Nordic grid, regulating power is mainly provided by hydro power. One part of the regulating power is called frequency control, which ensures that the grid frequency is stable and close to 50 Hz.However, setting the turbine into frequency controlled operation may cause stress and wear of the components in the mechanical control system. Frequency controlling implies large and frequent servo forces and longer travelling distance of the sliding bearings in the Kaplan turbine.Based on one selected Kaplan turbine, Selsfors G1, measurements and MATLAB calculations have been performed in order to determine forces and movements of the linkage system. With these forces and movements as input, stresses and fatigue have been determined as well as sliding distances, bearing pressures and wear of bearings during a typical lifetime of 40 years.The results indicate that no severe wear exists on the bearings during 40 years of service.

BACKGROUND: Today?s societal changes, including high rate of change and increasing information flows, are increasing the demand on the individual mental capacity. It becomes increasingly difficult to analytically process all the different dilemmas and everyday decisions as individuals have a limited mental capacity available to make these decisions. Thus, it has been suggested that ego-depleted relies more heavily on intuition, which is less burdensome, when making decision. However little is known about to what extent intuitive decisions differ from analytic.