Biogas is a renewable energy source that is produced by anaerobic digestion of organic mate-rial. In Sweden, biogas predominately comes from sewage water sludge and landfills or from organic waste of households and industries. Small scale digestion plants at farms are espe-cially expected to contribute to increased biogas production in the future. Biogas can be ob-tained directly in it?s raw form and used as fuel in a combustion chamber.

SNA Europe?s handsaw concept is called ?Bahco Handsaw System? and is constituted by a saw handle with the possibility to switch between different saw blades. The sales of ?Bahco Handsaw System? products have not achieved the desired results probably due to the high price. Developing a more cost efficient handle, enabling a lower consumer price of the product, is assumed to increase the sales volume.

Two elementary schools are now being built in Gråbo (in the municipality of Lerum),Röselidsskolan and Ljungviksskolan, which are both designed with solar thermalcollectors for the schools domestic water heating. During the summer while thelargest amount of solar heat can be generated, the activity hence the domestic wateruse in the schools are heavily reduced. Both schools are connected to the local districtheating system which makes it possible to use the solar collectors to deliver heat tothe district heating.The purpose of this thesis is to evaluate the two systems mentioned above and todetermine which system is more suitable to apply on a school. The building whichconditions were used for this evaluation is Röselidsskolan.A solar heating plant of each system type was dimensioned from the expected andknown conditions of the building. The purpose with the dimensioning was to makethe solar plants replace the ordinary energy source as much as possible.

Detta examensarbete syftade till att undersöka och beräkna kostnads-, resurs- och tidsförändringar på inleverans, mellantransport och distribution för Milkos egendistribuerade produkter vid en produktionsflytt från Östersund till Sundsvall. Projektarbetet syftade även till att undersöka hur en flytt skulle påverka möjligheten att transportera externa varuägares produkter. Arbetet mynnade ut i ett förslag som beskriver hur de externa transporterna kan lösas vid en eventuell produktionsflytt. För intransporterna av råmjölk presenterades ett förslag där 360 000 liter i veckan ska styras om från Östersund till Sundsvall med påföljden att årskostnaden ökar med knappt 1,5 miljoner kronor. I distributionsupplägget ingick ett uppförande av en omlastningscentral i Ånge och ökat utnyttjande av den befintliga centralen i Sollefteå.

In electricity markets evolving towards liberalisation and internationalisation, green certificates are seen as an important tool to promote production of renewable energy. In a green certificate market producers sell certificates received per unit of electricity generated from renewable energy. Trade in renewability is thereby decoupled from the the physical electricity trade. Tradable green certificates in combination with renewables obligation are implemented or planned in several EU member states. Integration at EU leveland the creation of a common certificate market seem like a possible next step.

ABB and Prevas have initiated a collaboration to sell a system to optimize steel industry furnaces, called FOCS. The purpose of this thesis is to investigate possibilities for integrating Prevas FOCS and ABB 800xA.The result of the investigation is used for an implementation of a prototype of the integrated system. The study shows a general method that can be used when implementing two software systems. The prototype of the integrated systems is made with usability principles in mind. This is a very important aspect in order to create a good working environment for the operators of a steel plant.

As the staffing agency business is rapidly growing and suffering from accidents resulting in higher sick leave than in other businesses, it is of great interest to analyze which responsibilities prevail between the customer companies and the staffing agencies, when it comes to working environment for hired staff.The purpose of this essay is to clarify the distribution of responsibilities between customer companies and staffing agencies, regarding working environment. I would also like to analyze which consequences this distribution of responsibilities may lead to.To be able to answer these questions, I have chosen to use the legal dogmatic method together with the sociology of law method. I have studied legal sources, literature and also interviewed three persons who are active within the staffing agency business; one person from the Swedish Work Environment Authority, one person from the employers? side and one person from the employees? side.The conclusion of my survey is that the SAM-responsibility is divided equally between staffing agencies and customer companies, since the customer company who hires staff is equated with an employer. The employer must also ensure that there is an organized work adaptation and rehabilitation function within the company.

Two elementary schools are now being built in Gråbo (in the municipality of Lerum),Röselidsskolan and Ljungviksskolan, which are both designed with solar thermalcollectors for the schools domestic water heating. During the summer while thelargest amount of solar heat can be generated, the activity hence the domestic wateruse in the schools are heavily reduced. Both schools are connected to the local districtheating system which makes it possible to use the solar collectors to deliver heat tothe district heating.The purpose of this thesis is to evaluate the two systems mentioned above and todetermine which system is more suitable to apply on a school. The building whichconditions were used for this evaluation is Röselidsskolan.A solar heating plant of each system type was dimensioned from the expected andknown conditions of the building. The purpose with the dimensioning was to makethe solar plants replace the ordinary energy source as much as possible.

Two elementary schools are now being built in Gråbo (in the municipality of Lerum),Röselidsskolan and Ljungviksskolan, which are both designed with solar thermalcollectors for the schools domestic water heating. During the summer while thelargest amount of solar heat can be generated, the activity hence the domestic wateruse in the schools are heavily reduced. Both schools are connected to the local districtheating system which makes it possible to use the solar collectors to deliver heat tothe district heating.The purpose of this thesis is to evaluate the two systems mentioned above and todetermine which system is more suitable to apply on a school. The building whichconditions were used for this evaluation is Röselidsskolan.A solar heating plant of each system type was dimensioned from the expected andknown conditions of the building. The purpose with the dimensioning was to makethe solar plants replace the ordinary energy source as much as possible.

Rapportens studie jämför en distribuerad och mobil databasmiljö med avseende på frågehantering. Områden som fokuseras inom frågehantering är: dataorganisation och distribution, lokaliseringshantering, skalbarhet, frågekostnader samt frånkopplad operation. Rapportens slutsatser fastslår att grundläggande skillnader inte existerar mellan miljöerna med avseende på frågehantering, vilket ger till följd att formulerad problemhypotes verifieras..

To purchase a house or an apartment is often one of the major personal financial commitments for a person. In 2005, 84% of the homeowners sold their homes using a estate agency. During 2006 several new opportunities appeared on the market, giving the homeowners more of a choice in what way to sell their homes. Media describes the alternatives in general ?as the agents on the Internet?.

This thesis examines the tendering process from the point of view of Swedish building contractors. The purpose with the study is to chart the decision process for the contractors during the tendering process. The study is designed as a survey study. This made it possible to reach a wide base of respondents, not letting such factors as geography being an issue. The survey itself was characterised by a very high response rate compared to other similar studies. The result from this study shows that former experience from similar projects, current workload and the clients economic condition are very important factors for both whether or not the contractor will bid for a project as well as the cost estimation and tendering price. Former experience from similar projects is also an important factor for the determination of the indirect costs.

This master thesis was performed as a mission from Holmen Skog with the purpose to investigate to which extent their own machine teams and engaged contractors were exposed to theft and vandalism, and most common preventive measures used. With the help of collected data the study should lead to proposals of preventive measures that can help the machine teams in their struggle to minimise theft and vandalism. Theft and vandalism are a big problem for Swedish forest contractors. In a scarce economic situation thefts and vandalism rapidly decrease the profit for the contractors. However, the last years have resulted in a positive awareness of thefts, and more and better preventive measures have been developed. With the initiative of this master thesis, Holmen Skog show that they are aware of the situation and that they wish to take control of the problem. A total amount of 108 questionnaires was sent out to Holmen?s own machine teams and engaged contractors.

Aim: The study aims to investigate the distribution of grades between students in a practical subject and in a theoretical subject.The problem:What is the grade distribution in physical education and mathematics, with respect to gender, socioeconomic background, parental education, ethnicity, and physical activity?Method:To answer the aim of the study a quantitative method was chosen. As the collection method used was questionnaires to 620 students in the 9th grade in Stockholm. Of the 620 questionnaires, 597 questionnaires were used for the static analysis. The method of analysis used cross tables and logistic regression analysis.

Two elementary schools are now being built in Gråbo (in the municipality of Lerum),Röselidsskolan and Ljungviksskolan, which are both designed with solar thermalcollectors for the schools domestic water heating. During the summer while thelargest amount of solar heat can be generated, the activity hence the domestic wateruse in the schools are heavily reduced. Both schools are connected to the local districtheating system which makes it possible to use the solar collectors to deliver heat tothe district heating.The purpose of this thesis is to evaluate the two systems mentioned above and todetermine which system is more suitable to apply on a school. The building whichconditions were used for this evaluation is Röselidsskolan.A solar heating plant of each system type was dimensioned from the expected andknown conditions of the building. The purpose with the dimensioning was to makethe solar plants replace the ordinary energy source as much as possible.