The aim of this master thesis was to find and grade suitable sites for wind turbines in the rural district of Lerum at the reguest of Göteborg Energi. The rural district of Lerum consists of very complicated terrain which was the reason why we picked Lerum.The assignment was achieved by using the software program ArcGIS and its attendant tools. In step 1 an overall analysis was made in order to sort out the least suitable sites. Step 2 consisted of a 3D analysis in ArcScene together with a more precise analysis in ArcMap. As result we found two interesting sites, which met our demands and specific constraints.

A computer model based on minimization of the free energy, capable to predict contact angles and spreading transitions between Wenzel and Cassie mode for drops placed on surfaces with different topography were implemented in matlab. Simulations were compared with experiments documented in the literature. These showed that reported transitions between Cassie and Wenzel mode can be explained by minimization of the free energy. In this report, a study on the possibility of constructing water repellent paper surfaces with a combination of treatment with octadecyltrichlorosilane and topography changes, is included..

The interest for wind power has increased in Sweden. Northern Sweden is especially interesting due to that a new wind resource map shows that there are areas in northern Sweden that have more potential for wind power than what have been known before. Therefore E.ON Vind is interested in finding out if, and where, there are suitable places for establishment of wind power in northern Sweden. The purpose of this master thesis is therefore to perform an inventory of northern Sweden for suitable places for wind power. The master thesis is performed at E.ON Vinds office at Vasagatan in Stockholm.

The vertical electronic excitation energies for the narrow-bandgap polymers LBPF, EP37 and EP62 have been calculated using Density Functional Theory (DFT). Also the vertical excitation energies for the acceptor unit of LBPF have been calculated using the Hartree-Fock (HF), DFT and Coupled Cluster (CC) methods. The calculations cover the visible and infrared wave length region and two strong transitions are obtained, one corresponding to the pi to pi* transition and one corresponding to the pi to Acceptor transition. The excitation energies obtained from DFT are below the corresponding experimental results and attempts have therefore been made to perform bench-marking calculations using a hierarchy of CC methods..

The purpose of this master thesis is to investigate how nearby forests affect the energy production in wind turbines. To reach the purpose a case study is performed on three wind turbines sited on a field in a north-south line at Andersfält in the municipality of Halmstad, Sweden. Approximately 100 meters south of the southern wind turbine a forest is situated. The case study is divided into three sub studies where the difference in energy production, the affect of the forest and a wind meteorology model, WAsP, is studied. The result show that the forest have a significant influence and that the WAsP-model gives an incorrect result of the energy production in wind turbines sited near a forest..

Idag används guld som kontaktmaterial på elektriska kontakter för lågströmstillämpningar. Guldhar emellertid låg nötningsbeständighet, är dyrt och miljömässigt påfrestande att utvinna. Ettalternativt kontaktmaterial till guld är nanokomposit Ti-Si-C-Ag belagt medlikströmsmagnetronsputtring. Nanokomposit Ti-Si-C-Ag har hittills belagts med sammansatt Ti-Si-C sputterkälla och separat silverkälla.I detta arbete har filmer belagts från tre olika sammansatta Ti-Si-C-Ag-källor med tre olikakolhalter. Filmerna har belagts i två olika beläggningssystem: Ett konventionellt batchladdat ochett sekventiellt med sluss.Filmernas fas- och ämnessammansättning har studerats med XRD och EDX.

This qualitative study is about the differences and similarities between the organization Friends and schools? methods to prevent bullying. Aggression, bullying and discomfort in schools result in that many students do not dare to go to school because of their fear that they might get attacked and become systematically bullied. Bullying is a universal and persistent problem. In this study the reader will receive a better understanding and get an insight into the problems that teachers and students experience and struggle with every day in dealing with bullying in schools.

Experimentets art och roll i naturvetenskaplig undervisning är ett fundamentalt och omfattande ämne. I föreliggande litteraturstudie görs ett försök att sätta in frågan i ett historiskt, pedagogiskt och vetenskapligt sammanhang. Innan experimentets roll diskuteras, ställs dock frågan vad naturvetenskap är, varför och hur det skall undervisas, och vad som kännetecknar praktiskt arbete och experimentell verksamhet i skolan. Med denna bakgrund refereras några forskares och lärares erfarenheter och åsikter. Det visar sig, föga överraskande, att formerna för och avsikterna med experiment i undervisningen är skiftande.

The aim of this thesis is to study the teaching methods that provide the greatest learning effect for children in grades 6 in the subject of physics. One class was divided into three equal groups, each group was educated in a specific way. The three teaching methods that have been investigated are: film with reflection, laboratory work and traditional lecture- teaching. The research question of the study is: "Which method of three selected, causes the greatest understanding of the properties of air??.

Survey's purpose is to illustrate why and how the process happened when Piteå relocated its commercial port away from Skuthamn to the new construction on Haraholmen 1950-1973. How decision-makers worked to achieve their goals, how the work changed and what incentives motivated them to act. The results showed that the decision was taken not to retain the existing commercial port in large part due to Skuthamns physics attributes, which made it impossible to ship large deep vessels from there. The reason that the decision about the port took such a long time was due to a local political conflict which was based on interest in the ownership of Haraholmen. The reason for the location of the trading port became Haraholmen had political backgrounds.

Organic Light Emitting Displays (OLEDs) are a new type of thin emissive displays predicted to possess superior properties to existing techniques e.g. Liquid Crystal Display (LCD). The main advantages are low power consumption and a thin display structure. This report contains an explanation of the emissive OLED technology, its functionality and the physics of the organic layer structure in an OLED. The technology is described with respect to the two classes of organic materials used in displays, small molecules and conjugated polymers.

The aim of this study was to investigate preschool teacher?s perceptions about the curriculum goal concerning simple chemical processes. The result was based on narratives received by a qualitative study and semi-structured interviews of six preschool teachers. The results of the study showed that preschool teachers perceive that they actually are working in a relatively small scale with simple chemical processes and they do not really know what simple chemical processes are, and do not feel very familiar with the subject. Water, dough, mud, paint and baking were the most common activities that were used when working towards the curricular goal. However, it was never explained to the children that it was simple chemical processes they were working with during the activities, neither was it discussed among colleagues because of the uncertainty about the concept.

Syftet var att studera elevernas uppfattningar inom Naturbruksprogrammets hästinriktning om sambandet mellan ryttarens kroppsfysik och ridningen. Följande frågor har ställts: ? Vilken betydelse ansåg eleverna att en god kroppsfysik hade för ridningen? ? Hur uppfattade eleverna olika pedagogiska metoders betydelse för ridningen? ? Hur uppfattade eleverna olika pedagogiska metoders betydelse för kroppsfysiken? ? Hade eleverna förstått att ridningen påverkades av deras fysiska hälsa? För att besvara frågeställningar har jag använt mig av en enkät. De elever som besvarade enkäten deltog i ett projekt, som genomfördes med hjälp av olika didaktiska metoder och övningar samt observationer. Projektets avsikt var att förbättra ryttarens kroppsfysik samt dess inverkan på hästen.

The purpose of this investigation is to find out how the children?s exercises affect their learning capabilities. With exercise, I mean all kinds of movements, like physics, walks and games.The method I will use in this investigation is interviews, where I choose to interview both teachers and their pupils at a school which uses an exercise-program called röris. Röris is an exercise program which involves moving to music. I also choose to look at Bunkefloprojektet, were scientists has investigated how the power of concentration is affected by exercise.My conclusion from the interviews and the literature is that I can?t prove that the children?s exercises affect their learning capabilities.

This Master?s thesis aims to map and analyse publishing patterns at two academic departments at the University of Gothenburg - the department of Physics and the department of History. The investigation has been guided by a set of questions: Who chooses to publish their scientific outcomes? In which forums do they publish findings? In what kind of media are the results published? What type of findings get to be published? The departments' publication lists have been examined, covering the years 2004-2007. Furthermore, ten scientists have been asked to describe factors contributing to their individual publishing pattern.