Delia flies (Diptera: Anthomyiidae) are economically important pests in several horticultural crops. The control is commonly relying on chemical insecticides, though there are possibilities with biological control from the natural enemies in the field. An important natural enemy is the parasitic wasp, Trybliographa rapae Westwood (Hymenoptera: Figitidae) that lays eggs in the Delia fly larvae. The parasitoid larva and the host larva have a parallel development until the host dies within its puparium and an adult parasitoid emerges. The aim of this thesis was to understand the attraction to host- and food-associated plant volatiles of T. rapae, in order to enhance the effectiveness of the parasitic wasp as a biological control agent.

The estate of Rämningstorp in the region of Västergötland in southern Sweden is administered by the holding trust company Skogssällskapet i Skövde. In 1999 measures were taken by Skogssällskapet to drain the stream Fredstorpsbäcken as a means to increase the forest productivity of the surrounding lands, which are situated on the estate of Rämningstorp. Almost immediately after the drainage, the streamwater turned turbid and a landowner downstream reported the issue to the county administrative board of the region. The aim of this thesis was firstly to analyse the suspended matter that appeared during summer/autumn and secondly to explain why it came to be. Initial hypotheses for the explanation to the greyish turbid water were that it was either 1) a chemical/biochemical precipitate, or 2) an bacterial/algal blooming.

On-site sewage systems are common on the countryside of Sweden with approximately one million on-site systems installed. Due to insufficient function, these contribute significantly to the total discharge of phosphorus to rivers and lakes, causing eutrophication. In order to reduce eutrophication and to fulfil one of the environmental quality objectives, the decision was taken by the Swedish Government in 2005 that 60 % of phosphorous in sewage sludge is to be recycled to arable land before 2015. To make recycling a reality, new solutions have to be found. Federation of Swedish Farmers (LRF) takes an active interest in this issue and has initiated this study. One problem is that the food industry is sceptical towards recirculation due to the risks that products from sewage systems may contain pathogens, heavy metals and unwanted chemical compounds, e.g.

I denna undersökning studeras hur digitala verktyg används på två högstadieskolor i årskurs 8 och hur dessa verktyg möjligtvis kan inverka på elevers musikskapande. Undersökningen är av kvalitativ art och grundar sig på deltagande observationer och semistrukturerade fokusgruppsintervjuer i projekt där elever på olika sätt skapar musik med digitala verktyg. Den genomsyras av ett medieekologiskt- och sociokulturellt perspektiv där empiri grundar sig på utsagor och erfarenheter från tio observationstillfällen och sex intervjuer. I undersökningen framkommer det att digitala verktyg används sällan och i begränsad omfattning i musikundervisningen på de två skolorna. Digitala verktyg erbjuder en direktlänk mellan det klingande ljudet och den visuella representationen, något som ligger i linje med tidigare forskning.

The stability of railway embankment is essential for safe transport. In order to ensure safe transport, water should be allowed to freely drain. Furthermore, as the engine driver has to be able to see signs, and people working on the embankment are supposed to easily see flaws on the rails to ensure safety for the passing trains, plants should not be allowed to grow on the embankment. In Sweden there are 12 000 kilometers of railway tracks and 25?30 % of them are treated for weed control every year.

This report describes the construction work of a radar antenna for the radar systemCARABAS. CARABAS is a long wave airborne ground radar that has been developed bySAAB Microwave Systems and will now be mounted on a small helicopter, Schweizer 300.The antenna should be able to fold up and down. When the radar is in use the antenna islowered and under transport, start and landing the antenna is folded up. An emergency dropfunction should also be included in the design of CARABAS III.The extent of this report includes construction of the antenna, frame structure attached to thehelicopter, mechanism for folding the antenna up and down and mechanism for emergencydrop function. The mechanical design of the antenna and frame structure is based on modaland stress analysis, vibration measurement of Schweizer 300 and frequency analysis, andcalculations regarding aerodynamic drag and mechanics.The exciting frequencies of the helicopter and accelerations at those frequencies weredetermined by vibration measurement and frequency analysis.

The limit for mercury in fish, set by health authorities, is exceeded in about half of the lakes in Sweden. Methyl mercury (MeHg) is the most toxic form of mercury and accumulates in fish. Therefore transformation of inorganic mercury (Hg) to methylmercury (MeHg) is an important process that we need to understand in order to possibly counteract the negative effects of mercury in the environment. The seasonal dynamics of mercury biogeochemistry is likely of great importance for the accumulation of MeHg in the aquatic food web. In thesis the chemical speciation and transformations of Hg and MeHg in bottom waters and sediments is followed in Ängessjön, a small lake located on the east coast in the middle of Sweden. The lake is not directly affected by any industrial pollution and concentrations of Hg in the sediment reflect the atmospheric deposition in this area, as well as processes taking place along the hydrological pathways from soil to lake. Samples from sediment, bottom- and streamwater were collected in average every second month during the period Feb.

The relationship between color and music, and their relation to the human being and our surrounding universe has been subject of studies, theories and experiments since the old ages. From the ancient China and Persia to the present times, philosophers, scientists and artists have tried to explain these connections between color and music and also tried to find answers to this ancient enigma.The invention of the color organ c. 1730, an instrument that was intended to display color in addition to the musical auditive experience, was the first attempt to materialize the practical correlation between notes and color. This correlation has its foundation in the ideas of Isaac Newton, who through his book Optics published only a few years earlier, conformed the beginning of a new art culture: ?Visual music?, in which image and sound are the fundamental elements in the creative process.The ?visual music? concept is not only grounded in the ideas of music and sound, but also in the extraordinary creative capability of certain individuals.

Syftet med den här studien är att ta reda på vilken kunskap och vilka värderingar som finns i klädesbutiker angående kemikalier i kläder och om ekologiska alternativ. Jag vill även undersöka på vilket sätt information kan påverka butikerna till att agera i linje med en hållbar utveckling. Särskilt vill jag undersöka hur butikernas företagskultur påverkar deras strategiska arbete. Jag har gjort en kvalitativ undersökning och intervjuat 13 butiksinnehavare i centrala Malmö. Först träffade jag intervjupersonerna i deras butiker, några månader senare ringde jag upp var och en för att se om de tänkt något på det vi samtalat om eller till och med gjort några förändringar. De flesta av intervjupersonerna visste mycket lite om vad det finns för regler gällande kemikalier i textil, de hade dock viss kunskap om ekologiska kläder.

AbstractTitle: Art influences in today´s advertisingimages ? A qualitative study of advertisingimages and work of artNumber of pages: 46Author: Sanna OlssonTutor: Else NygrenCourse: Media and Communication Science CPeriod: Autumn 2009University: Division of Media and Communication, Uppsala UniversityPurpose: The purpose with this composition is to analyse how art has influenced todays advertising images, to see wich influences that can be descovered.Method/Material: Since this is an imageanalys the main material has been consisted of advertising images, a total of seven. In addition, art images have been used as comparative material. The advertising images have been strategically selected, however they are modern and aestetically appealing. A number of questions have been formulated wich is the basis of the analys.Main results: Primarily the study found that art has influenced today?s advertisingimages in different ways.

The use of balanced scorecards have spread explosively throughout the world during the last decade. This management tool have become very common in a vide spread variety of organisations on all continents. Many balanced scorecard fails though and scorecard theorists often blame the identification- and implementation process as they claim that these lay the foundation for the use of the tool. As my literature study shows, academic research on the area is rare. Particularly the effect on the implementation process from organisational dynamics and organisational structures needs further research.

Oilseed rape constitutes a good break crop within a cereal dominated cropping system. The normal sowing time for winter rape in Sweden is August. It's a time in the cropping year characterized by a heavy work load, such as harvest and soil management. In addition, it is often a period with large precipitation. Thus, it is sometimes problematic for the farmer to do the sowing of winter rape at the optimal time.

Environmental destruction is a growing problem in our world. Almost every day there are new reports concerning that we have to do something about the greenhouse gasses. Simultaneously is the human constantly more eager to have a life with higher standards and therefore uses more energy. The environment is a question that is highly up-to-date and more people try to find solutions on how to save our planet. One way to decrease the energy demand is to build passive houses, where the houses don?t have any active heating.

 The aim of this study was to examine how young people, who have been treated for their misuse and/or to learn to handle a parent's misuse, portrayed the network's implication in their wishes about improving their lives, to make new choices. The network included members of nuclear family, relatives, important persons at school/work and friends. The ?professional network? (therapists and social workers) also became a part in the young people's life during a period. The main issues of this study concerned differences in their experiences of the young persons´ network relationships in before, during and after completed treatment.

Piled friction soil show a set-up which is increasing with the time after installation. The cost could be reduced if the set-up had been taken into account when designing but in Sweden it is very unusual to do that. Previous studies showed that set-up can vary between 25 % and 75 % during the first 90 days after pile installation. This showed that the effect of the phenomenon is difficult to predict. A study involving five projects have been carried out by specifying certain parameters like pile type, method for pile installation and test method for measure the bearing capacity in friction soils located in Sweden.