Biogas is increasingly used for fuel in for example vehicles and it´s produced in a biogas processconsisting of the steps of pretreatment, digestion and gas cleaning. The pretreatment is a method usedto increase the gas production and / or destroy pathogens. The digestion is the stage when anaerobicmicroorganisms convert bio-mass of a substrate to a raw gas containing about 65% of methane. Thegas cleaning is used to increase the methane content to about 97% so the gas can be used for motors invehicles. The biogas part of the Ekeby sewage plant in Eskilstuna is using multiple substrates.

This paper aims to investigate how human beings uses food to found an identity, with regards to how social class affects their choice of food and if trends play a part when it comes to cooking and purchasing food. The paper applies theorist Pierre Bourdieu's concepts such as habitus, capital and field.The main part of the material is composed of four interviews with seven informants; all of which is middle class. The paper also looks at how lifestyle, taste and attitudes to consumption are used when the informants build identity. The empirical part is split into three main subjects, where I first seek to find each informants food habits. What do they eat, and what do they not eat?It showed that a large part was due to their varied lifestyles, however generally speaking the day to day meals should be quick while meals during the weekends could take longer and also cost more.

The aim of the study was to install a biogas system consisting of three tubular polyethylene biogas digesters at a rural household in Malawi and to evaluate the constructed biogas system with regards to relevant system parameters. The purpose was to evaluate if the technology is a possible solution to reduce deforestation and support Malawi in climate change mitigation and adaptation. The study was carried out in the southern part of Malawi in cooperation with the University of Malawi. Locally available materials were used to construct and install the system. Three different feed materials, cow, goat and a mix of cow and goat manure, were used in order to determine which one was best suited to utilise as a digester substrate. After the installation, measurements of temperature, pH, biogas production, biogas composition and system functionality were made. The results of the study show that a biogas system with tubular polyethylene biogas digesters can be successfully installed at a rural household and that the most suitable feed material is a mix of cow and goat manure.

The aim with the present study was to investigate whether there is a difference between the course participants who find their way to the dog-school respective the Swedish Working Dog Association. The study have focused on four issues; why the course participants have chosen the dog-school respectively the Swedish Working Dog Association, why the participants bought their dog, if the participants are satisfied with their dogs and if it is more likely that they turn to the dog-school?s than to the Swedish Working Dog Association with their first dog? Course participants from two dog-schools and from two of the local clubs belonging to the Swedish Working Dog Association in Skaraborg, Sweden, answered a questionnaire. In total 85 answers were collected, including 60 from the course participants from Swedish Working Dog Associations and 25 from the dog school?s course.

On today?s competitive market, it is difficult to achieve profitability trough high prices on manufactured products. Profitability must be obtained through low manufacturing costs, high quality and short lead times. One of the companies on the market is Sandvik Coromant, manufacturer of tools and chips for metal cutting. This master thesis investigates the methods of manufacturing for boring bars at the manufacturing unit GVH4 at Sandvik Coromant in Gimo, Sweden.

This study examines whether it would be profitable for travel distributors in the charter to expand its offerings to other travel related products, and also the products that are in demand. We are also studying the role that brand has for customers' choice of travel.According to Hellman, e-commerce is to be preferred since it is competitive because it gives the travel distributors the opportunity to lower down prices. Therefore, we also investigated the proportion of respondents who would consider buying these travel-related goods through the travel distributors? websiteIn support of this study, is a survey with a population of 100 charter travellers. Respondents are divided into two groups where the first group consists of people who have booked their trip in stores, and the other via the Internet.

AbstractThe importance of good construction planning affects the final costs of the production and the timing of the project. Planning for building projects has been studied with the aim of identifying how three week planning appears in the construction industry today.A case study has been conducted in Navisworks Simulate to assess whether the software is suitable to connect the task schedule with the BIM model to create a 4D model. 4D models are used for performing 4D construction simulation to visualize the project. In order to use the benefits of the model, investment in equipment and software is required. This means higher costs for the companies.

The market of today consist of products/services who resemble each other, the differences are small. Their for it?s necessary for the companies to provide added values to the product so it will stand out from the rest of the products and lead to purchase. A well used strategy in the fashion industry is marketing with celebrities, this is considered successful because it brings attention and strengthening to the brand. Because of this, the strategy also branch out to other industries, but the question is if it?s as successful there? There?s also a serious down-side with the strategy and that is that there?s a great risk with using celebrities.

AbstractThe importance of good construction planning affects the final costs of the production and the timing of the project. Planning for building projects has been studied with the aim of identifying how three week planning appears in the construction industry today.A case study has been conducted in Navisworks Simulate to assess whether the software is suitable to connect the task schedule with the BIM model to create a 4D model. 4D models are used for performing 4D construction simulation to visualize the project. In order to use the benefits of the model, investment in equipment and software is required. This means higher costs for the companies.

The resting area is the most important place in the barn for the dairy cow, sometimes called the heart of the free stall system. Inadequate design of the lying area, and lack of or poor quality of bedding materials may reduce the hygiene of the stall. Poor management regarding the cleanliness of the resting area may lead to poor animal hygiene and increased bacterial growth. This in turn will lead to increased risk for environmental mastitis as well as impairing milk quality through contamination with spores. In this literature study the most commonly used bedding materials; straw, sawdust, wood shavings, clean sand, recycled sand, peat and recycled manure solids, are compared to one another with regards to their ability to resist bacterial growth. Effects of adding hydrated lime to bedding materials have also been studied. Most bacteria need humidity and prefer a quite high water activity to be able to grow.

The purpose of the study is to illustrate the choices of sports profiled education amongst pupils in the upper secondary school. Special attention is brought to whether there exist any differences between team- and individual competitors in their view on sport and education. One hypothesis that constitutes the base of the study is that pupils from lower social class, in a higher extent, tend to be team competitors and choose sport activities prior education. The result has been interpreted against Bourdieu's cultural sociology, in which the central concepts are habitus and cultural- and economic capital. The method that has been used is quantitative in the form of a questionnaire study which 277 pupils have answered.                   The result shows that the sportsmen, regardless type of sport, are not influenced by social position regarding choice of education and in their view on education and studies.

We travel more nowadays. The increasing travel rate generates greenhouse gases which in the long run cause an increasing number of natural disasters over the world. Car traffic is a major contributor to this development. Out-of-town shopping centres have historically good accessibility for car traffic. This study aims to look into what are the factors that influence the choice of transport mode for dwellers in the outskirts of a town when going to out-of-town shopping centres.

The purpose of this study is to investigate how children search for and choose picture books while visiting the library together in a preschool group. How do children interact with each other and their teacher while searching for picture books? Which aspects of children's everyday lives are apparent in their choice of picture books? The theoretical frame of reference consists of Brenda Dervin's sense-making approach to information seeking and William Corsaro's sociological approach to studying children's routine activities within a peer culture. To capture children's interaction, we have observed a preschool group consisting of six 3- to 5-year olds and their teacher in a library setting during three visits. Our study shows that children's search for picture books is a social activity that involves various verbal and nonverbal strategies in order to include and exclude each other when they find a picture book that interests them.

The social imbalance recruitment has been a current topic for years. Since much research has focused on the higher education's problems with this, this thesis aims to investigate if you are already at the high school choice were influenced by your social background. To get a further dimension to this topic, the French sociologist Bourdieus thoughts on people's possession of, what he calls cultural capital was used, and we made use of it in the sense of parental education. Through a survey conducted in four ninth grades in two municipalities with different characteristics in terms of socio-economic conditions, we asked questions about their choice to high school. What programs did they choose? What factors were important? And which person had influenced them? The results showed a pretty clear dividing line between the pupils who came from homes with strong cultural capital to those who did not in the same sense.

Introduction: In 1998, the pension system was changed and the so called PPM system was introduced. The PPM system is partly fund-based, partly distribution-based. There are approximately 700 different investment funds to choose between, at a maximum five for each individual. For persons who are not familiar with the financial market, the choice might be difficult. The lions? part of the investors do not seem to have an active strategy.