In order to avoid harmful substances ending up at the municipal sewage treatment plants, it is important to purify the wastewater at the source. One such source is the wheel washers available in many tire garages which are used to wash the wheels on our vehicles when we change between summer and winter tires. It is important to wash the wheels before storage, to extend the tires lifetime. The purpose of this study is to find a green innovative solution for reduction of emissions of heavy metals at the source, so that the sludge from the sewage treatment plants can be used as fertilizer. The target is to find a wheel wash method which leads to compliance with the guidelines for car washers, and that also provides a better washing result than with the existing method.

Compressed air is an energy source that is widely used in today's trucks and buses.Compressor located next to the engine supplies the pneumatic system with the compressed air and is lubricated with the engine oil. Some of the oil follows the air flow in both liquid and solid phase. The solid phase, namely the carbon particles are created due to the high temperature in the compression chamber.Oil- and particles carryover softens and destroys the rubber material in the air valves and disturbs the mechanical function of various components in the pneumatic system. In order to reduce oil- and particles carryover is an Air Processing System (APS) set downstream the compressor.No method for establishment of oil- and particles carryover from the compressor exists at the moment. Therefore the filtration efficiency of APS is currently unknown.

This Masters thesis work describes a comparison between two different methods for estimation of the down channel (base station to mobile subscriber) in Wide-band Code Division Multiple Access (WCDMA). The first estimation method, Optimal Feed-forward Channel Estimation (OFCE), is a conventional method that bases the estimates on data that is known to both sender and receiver, so called pilots. The second method, Decision Directed Channel Estimation (DDCE), is an elaboration of OFCE. It also uses user data for estimation. Simulations show that DDCE, in comparison to OFCE, does not attain an improvement in signal-to-noise-ratio (SNR) for high bit error rates (BER).

The purpose of this study is to investigate whether and how some teachers in primary education in a multicultural area discussing the interculturality in their teaching with students from grades 1-3. It also aims to examine how students? cultural interactions in the classroom are expressed..

The following study pertains to investigate the Christian belief in the resurrection of Jesus as it is portrayal in text books aimed at the course Religion 1 for Swedish upper secondary school. The study was carried out by looking at 12 selected books meant to function as teaching aids suitable for the course. The methodology covers both qualitative and quantitative aspects. The study shows that the topic of the resurrection is dealt with in a ratherneutral fashion. A survey of the evidence does not give credence to the notion that the textlength assigned to the resurrection, in any way gives greater importance to the resurrectionbeing of superior value as an Christian article of faith.The results are further discussed, and suggestions are given for how theresurrection of Jesus can function as a didactic tool for the purpose of teaching Christianityfor Swedish speaking upper secondary school pupils, in agreement and harmony with theSwedish syllabus.

This is an interview- and literature study that discusses teaching about the Second World War and the Holocaust, while working with the basic values in grade 7-9.The purpose with this examination is to see how teachers of history in grade 7-9 choose to teach about the Second World War and the Holocaust, how they work to integrate the basic values in their education and whether the teachers? education can be sustained by the Swedish school curricula.In this study I?ve been doing qualitative interviews with five teachers of history in grade 7-9 from different schools. I have also perused the Swedish school curricula and read some literature and studies about different ways of dealing with the subject: the Holocaust.According to the central parts of the Swedish curricula, LGR 2011, the fields about the Holocaust and the 20.century World Wars are to be studied during grade 7-9. All my respondents in the study teach about this think that the most important thing with this complex time in history, is to give the students a deeper understanding for the time leading up to the beginning of the  Second World War in 1939, and why the Holocaust actually took place.Regarding the work with the basic values, all the five respondents agree on the fact that, this subject shall permeate the entire work at school, all the time, every day, but that it?s absolutely essential while studying the Holocaust.

The purpose of this study is to present a comparative analysis of seven literature anthologies for the Upper Secondary School, from 1968-2004, to investigate how much space Esaias Tegnér is getting and how many and which of his works that is presented in these anthologies.The study is set against the hypothesis that Tegnér is getting a reduced space in the anthologies because of his connection to Romantic nationalism, which after World War II has been associated to the themes and ideology of the National Socialism. In view of this I have asked myself if Tegnér is getting a reduced space in the literature anthologies for the Upper Secondary School. My study shows that this is the case.One can also see clear trends in a subjective approach towards the author. In the anthologies where Tegnér have had a strong prominent role, he is retaining his position even in later editions. Over the entire period of 1968-2004 he is getting a less prominent role, although he is generally presented as the greatest poet of his time.I have also examined the discussion of Tegnér during that period to see if you can find any connection between the discussion about Tegnér and the change his work gets in the literature anthologies.

What is the?self? and to become ?one-self?? To resolve this questions possibility I´ve been using the philosopher Søren Kierkegaard metaphysic paradoxes. This essay about the ?self? shows the reader the difference between describing a transcendent and immanent phenomenon and if it´s possible to become or to not become ourselves. The process is a key of the ?self? which Kierkegaard explains the ?self? in and for it-self.

The project has sprung out of my imagination. I wanted to find out what happened to my creativity, and my way of making product design if I used the method of putting myself into a fictive world. The project has taught me to rely on myself and my knowledge as a designer.I have made a chair which closes out sounds and gestures in public places. A chair which provides you with peace and quiet in a busy environment..

Preservation of cells and tissues by freezing at temperatures below 70°C has led to new possibilities for the storage of germ cells for fertility preservation. During the freezing process problems might occur, the greatest being ice crystallization which can cause membrane destruction and thus cell death. To minimize this risk, solutions that reduce the freezing point can be added to reduce crystallization and increase survival rates. These solutions are called cryoprotectants. The best method for freezing is still not known.The aim of this study was to analyze the effect of various parameters on the survival rate of human semen frozen with liquid nitrogen.

In today?s school in Sweden the assignment of community encompasses mediated values and education of democracy as well of single subject matters. What does it mean then, that teachers have a certain kind of idea of democracy, and what implications may biology have for the assignment of community? In upper secondary school there are quite many courses in biology with a national curriculum, and findings show that students of teaching perceive or think of biology as helping to promote the dual-purpose of teaching. In this study, the author of the paper has interviewed four future teachers of upper secondary school with biology as one of their main subjects.

The goal of this thesis is to analyse whether the method ?Observiaire? is of any use for traffic analysis. The method consists of analysing film material, preferably before and after changes are made to an area, by answering a survey for the users that are observed within the population. The method also opens up for deeper qualitative analyses which are rooted in the quantitative data collected from the survey-study. In this study we analyse the method by applying it to the case study of the changes made at Götgatan in Stockholm, where a green wave was implemented and the bicycle road widened.

Very often the interesting variables are explained by several underlying variables and in statistical analyses it is common to study the relationship between variables and groups of variables. Because of this multivariate analysis is commonly used in both science and industry. There are two problem with both univariate and multivariate analyses. One is when the variables are correlated. The other is when the number variables of exceeds the number of observations which makes the matrices algebra used in the analysis impossible to execute.

[Sammanfattning saknas].

In recent years, the characterization of the Third World and its inhabitants in West-originated children?s books has been subject to debate. Media attention around a selection of books has generated discussions on how this relates and aligns with Sweden?s national teaching curriculum. The objective of this study is to explore how a selection of authors, born in Western countries, have characterized and presented the Third World and its inhabitants in its literature.