New energy resources that can replace petroleum diesel are needed and biodiesel may be an excellent substitute. During storage and use, biodiesel can oxidize and form peroxides, leading to degradation of the fuel. It is therefore important to determine the peroxide content of the fuel. In this thesis the triphenylphosphine method, which involves GC-MS analysis has been compared to the standard iodometric method which involves titration with sodium thiosulfate. Working standards were made to see how well the iodometric method worked and also in order to make a calibration curve in GC-MS.

In this thesis, the conditions of using the maintenance method live work at the Swedish TSO, Svenska Kraftnät has been analyzed. The study is limited to only include live work on 220 and 400 kV. The live work method is a type of maintenance that can be done, on lines or stations, even though they are still energized. The purpose of this thesis has been to map the present live work situation at these levels in Sweden. The study is based mostly on interviews with people who have specific field competence with in live work but also with personnel at Svenska Kraftnät.

The aim of this Masters thesis is to analyse school librarians and teachers perspective of childrens reading and reading progress, the impact of informational texts on childrens reading and how school librarians and teachers work/teach to improve their students understanding of informational texts. We also intend to study what consequences school librarians and teachers believe that childrens reduced understanding of informational texts can have in the long run and how this could be improved. The theories applied encompass different literature-pedagogical strategies, theories about reading purpose and direction of the reading process together with a theory that shows the school librarys function in the education. The empirical material has been collected through interviews with one school librarian and one teacher at three different schools. The material has then been analysed and interpreted from theories and earlier research.

Sale and acquisition of a business is risky, since vague legislation and lack of literature often contribute to the fact that it is not possible for the parties to know beforehand how a dispute about the agreement shall be resolved. The objective of this thesis is to clarify what should be applied in terms of liability and the allocation of risks between the parties, in order to help avoid disputes about the agreement. In order to fulfill the purpose of the thesis, the legal status of the agreement has been investigated, as well as the question whether the sale of goods act should be applied, even though the sales agreement between the parties should be the primary regulation. Furthermore, another question that has been investigated is whether the buyer?s duty to investigate, and the seller?s duty to inform, affects the allocation of risks between the parties, and thereby also their liability..

Traditionally, rolling mills use emulsions based on a mixture of oil and water for lubrication. Since two years ago SAPA has been using (instead of oil) a synthetic lubricant so called conditional emulsion for hot-rolling of aluminum. This lubricant is water based and homogenous at ambient temperature, but switches to a two-phase system at heating above the cloud point.This project aims to validate and if necessary modify an existing HPLC method for quantifying two out of three key components (A, B and C) in the conditional emulsion. Attempts to develop a method to quantify the pH adjusting components, X and Y were also made. These two methods are required to optimize the lubricant.Due to the complexity of the components, it has been difficult to present a method for quantification, and HPLC with ELS detection was chosen after a long series of trials.

This essay aims to investigate a rare method of marking up timber before hewing it. The method for marking up timber is by eyesight, where visual judgment and the use of a broad axe are the tools employed. The broad axe is driven through the bark and exposes the inner bark in a straight line. The method is described by a craftsperson dating back to the 1930s. There is a lack of information regarding the method.

Habitat mapping was conducted in the main stem of River Vindelälven in the autumn of 2009 along the salmon distribution area. The aim was to estimate the quantity of potential reproduction areas, including spawning and juvenile rearing habitats. The mapping included 61 km of various stream sections along the river length of 269 km. The total area of stream habitats was estimated to 647 ha of which 396 ha (61%) were considered as either potential or optimal juvenile nursery habitats. The area of these two habitat classes were used to estimate the smolt production in the river by using electro fishing densities of juveniles (0+ per 100 m2).

This master theses deals with different methods for automatic tuning of the existing controller for external axis. Three methods for automatic tuning have been investigated. Two of these are based on the manuell method used today. The third method is based on optimal placement of the dominant poles. Different sensitivity functions are important for this method.

Sustainable Development is often described as a balance between ecological, economical and social aspects. Between these exists a complicated interaction that creates conflicts in the planning of the landscape. We see a growing need for a functional interaction between values and interest and an understanding for different perspectives. Cooperation and dialogue are key ideas with the focus on cooperation rather than the goal. There is a lack of forum for dialogue and cooperation within municipalities where a great knowledge and competence are gathered.

In the following study the author compares two methods of teaching history, the thematic approach and a more traditional chronological approach. Aiming at distinguishing the perceived notions of strength and weaknesses of each method, from the perspective of teaching, the author uses semi-structural interviews with four teachers in order to shed light on the reasons why each method is chosen. The perceptions of the thematical and chronological method in teaching history are further compared with the result in students? grades. The result shows that the thematic method is perceived as being better at teaching the student about causality and different understandings of changes in history, which would have positive impact on higher grades.

The aim of this final thesis is to make it easier for the customer of a new designed house to get a picture of what the house will look like inside before it has been built.A method, which can be applied by any construction company who likes to visualize there buildings, has been designed and tested. One works after a regular design planning which is transformed into a three dimensional model of the house. In a rendering program, materials and surfaces are chosen for the model and then a picture of the finished product is made. The programs used for this work are ADT 2006 and VIZ Render.To evaluate the use of this method I?ve chosen to cooperate with LB-Hus which is a housing company that is specialized in building detached houses.

Metoder används idag i princip vid all utveckling av informationssystem. Undersökningar som gjorts visar dock att de sällan följs på det sätt skaparna av metoderna avsåg utan att systemutvecklare av olika orsaker modifierar eller skräddarsyr dessa metoder och därigenom skapar en Method- in-Action. Syftet med denna uppsats har varit att genom kvalitativa intervjuer undersöka systemutvecklarens metodanvändning samt studera vilka faktorer som påverkar när systemutvecklaren skapar en Method-in-Action. Några av de slutsatser vi dragit av denna undersökning är att nyttan tid, storlek, vana, visualisering och trend är faktorer som påverkar sammansättningen av en Method-in-Action och att systemutvecklare oftast använder en eller högst två metoder i sitt arbete..

This thesis aims to shed light on the collection of Oriental manuscripts at the Uppsala University Library Carolina Rediviva and how the collection is a part of the collective memory. The main question which is central for this thesis is: have orientalism and structures of power influenced the acquisition, arrangement and methods of accessability regarding the Oriental manuscripts? If yes, in what way and why? If no, how has this been avoided?The theoretical framework consists of four approaches: phenomenology, sociology of knowledge, orientalism and power which are applied to the archival concept of collective memory. The main source of material consists of three parts: the historical texts which gives an informational framework regarding the time and place in which the manuscripts were collected, the catalogues in which the manuscripts are described and the transcripted interviews alongside correspondence. Methodologically the thesis is based upon a qualitative method which also partly makes up the foundation for the main material.

This thesis examines information visualization, infographics, as a method of advertising. To answer the initial research question of what makes infographics an appropriate method for print advertising, a practical infographic-based advertising campaign has been designed. This, together with three other campaigns, has been the basis for an analysis focused on function, appeal and persuasion. The result tells us that there are benefits to using infographics for an advertising purpose, because the method can act both attention-grabbing and convincing, depending on how it is used and designed..

This study examines some students? attitudes towards mathematics in grade 2-4. When studying students? attitudes questionnaires and interviews are often being used as methods. In this study we used a more rare method.