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.

Dagvattenmagasin byggs för att fördröja och avlasta ledningssystemet dådagvattenmängderna i dem är stora för att sedan leda tillbaka vattnet i ledningssystemetnär vattenmängderna har sjunkit.Examensarbetet syftar till att undersöka och analysera vad som behövs göras för attanvända ett dagvattenmagsinet som är dimensionerat för tioårsregn redan vid femårs- ochtvåårsregn.Arbetet grundas på fältstudier och analys av hur systemet är uppbyggt. Beräkningar hargjorts för studera flöden i ledningar och fyllnadsgrad i magasin. Resultatet visar att det ärmöjligt att med relativt enkla åtgärder kunna utnyttja det aktuella magasinet redan vid 2-och 5-årsregn..

A geographical position and its social, cultural and political context as well as climate and specific physical characteristics define the scope for a landscape design project. This has become clearer for us in our master project where we have made a Design Program for the outdoor environment of Wollo University in Dessie, Ethiopia and analysed and reflected on the work and process. The aim for the project has been to design an attractive and functional outdoor environment for the Campus, based on the inventories and the needs and wishes of clients and users. But, the aim has also been for us as landscape architect students to gain a greater knowledge about landscape architecture and the design process by position ourselves outside our usual context. The method has been open and seeking where the site, literature studies, dialogues with people and our own experiences from the field study in Ethiopia has influenced the work. Wollo University is situated 400 kilometers north of Addis Ababa, in a mountainous landscape. It faces problems of heavy rainfall during the summer, soil erosion, a lack of essential facilities, and is still a construction site with empty spaces in-between buildings and infrastructure.

Depression- och ångestsymtom, som kan beskrivas som en del av emotionell ohälsa, är ett frekvent och växande problem inom den svenska ungdomspopulationen. Både en hög komorbiditet samt könsskillnader i ohälsa kan observeras. Samband mellan emotionsreglering och ohälsa har under senare år erhållit ett brett empiriskt stöd. Denna longitudinella studie syftade till att undersöka emotionsreglerings roll som mediator i utvecklandet av emotionell ohälsa över tid samt om det eventuella sambandet modereras av kön. Analyser visade att emotionsreglerings-strategierna kognitiv emotionsreglering och beteendemässigt undvikande medierade sambandet.

Utvärderandet av instrument och metoder är väsentligt för att avgöra validiteten och reliabiliteten av studiers resultat. I den här studien utvärderades delskalan Emotional Regulation. Delskalan ingår i Social Competence Scale (Corrigan, 2003) och användes som underlag för observationer av barn i åldern 4-5 år inom implementeringsförsöket av preventionsprogrammet PsPATHS i Sverige. Totalt deltog 132 barn vid två separata observationstillfällen. Två explorativa faktoranalyser med olika estimationsmetoder (ML och GLS) resulterade i en enfaktorslösning.

Utvärderandet av instrument och metoder är väsentligt för att avgöra validiteten och reliabiliteten av studiers resultat. I den här studien utvärderades delskalan Emotional Regulation. Delskalan ingår i Social Competence Scale (Corrigan, 2003) och användes som underlag för observationer av barn i åldern 4-5 år inom implementeringsförsöket av preventionsprogrammet PsPATHS i Sverige. Totalt deltog 132 barn vid två separata observationstillfällen. Två explorativa faktoranalyser med olika estimationsmetoder (ML och GLS) resulterade i en enfaktorslösning.

Today the individual ventilated cage system (IVC-system) is the most commonly used system when housing rodents. IVC systems are designed to control both supply and exhausted air at cage level, as well as temperature and relative humidity in the cages. This creates an optimal environment for the mouse and at the same time a protection against the risk of cross-infection between cages and the outside environment. The aim of this study was to evaluate the health and welfare for two different strains of laboratory mice (NMRI nude mice and C57BL/6NCrl mice) in three different kinds of IVC-systems; Arrowmight, Allentown and Tecniplast. 108 mouse pups from each strain (in total 216 mice) were selected after weaning at an age of three weeks and tested during 5 weeks.

District heating covers around 80 % of the heating demand in apartment buildings and 10 % in single-family homes in Sweden. In the year 2010 the total input of energy to the Swedish district heating grids was about 70 TWh, which corresponds to 11 % of the total energy input to the whole energy system in the country. Through the combined production of heat and power the CHP-plants often reaches an efficiency of 90 % from energy in the fuel to produced heat and power. In order to keep the efficiency high it is important for the owners of the plant to have good knowledge about the plants performance at different operation points. Strängnäs Energi AB initiated this diploma work together with FVB Sverige ab in order to come up with a program for short term planning of the production of heat and power at the company´s CHP-plant.The work consists of three main parts.

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.

I have in my thesis, examined the possibilities in terms of energy for a condominium association.To have an effective and good energy is becoming increasingly important with today's rising electric and oil prices. In my thesis I have used the condominium association Kärralyckan, which is situated in Falkenberg. The buildings at Kärralyckan are built in the mid-1970s, and are heated by electric radiators. The tap water is heated by an electric boiler.Based on that calculation I can show the various energyststem. The different solutions have been developed by contact manufacturers and installers through phone calls and e-mail.According to the results shows that geothermal heating has been a great solution for Kärralyckan.

Munksjökajen is an old industrial estate on the western shore of Munksjön in Jönköping. The purpose of this thesis is to develop Munksjökajen in accordance with the program for Jönköping?s future development ? Stadsbyggnadsvisionen ? drawn up by the city council.Munksjökajens relations to the surrounding areas have been investigated as well as the need for public transport and possibilities for commercial, municipal and private businesses to operate in the area.The final proposal has a relatively high degree of preserved industrial buildings. New buildings vary in shape and expression in order to create an interesting and diverse environment. The proximity to the lake adds character to the neighbourhood and the water is accentuated by the integration of it in the area..

On 1 January 2007 abolished Sweden as one of the last countries in EU the wealth tax. This wealth tax was in Sweden for almost 100 years. As the great debate in the context of tax reform in 1910 was not so much about the introduction of a wealth tax. The discussion was instead on the wealth tax would be proportional or progressive together with the income tax.When the government with and there finance minister, Carl Swartz, presented its government bill, 1910:88, 11 March 1910, the draft regulation on income and wealth tax was said, that now they had finally made a shift in the direct tax to the state. A change had been sought and it would have been great difficulties to be overcome and it would have been deeply entrenched ideas about this tax reform impossible.Despite all the protests from the wealthy in society, so continue this conservative government through reform with the strong support of many conservative politicians who had most to lose from this tax reform.

The aim of the present study was to evaluate the effects of large amounts of straw in the farrowing pen on thermal regulation of the newborn piglet in different weight classes. 20 sows were given 15 kg of straw in the farrowing pen 2 days prior to until 7 days after parturition. A control group of 18 sows had no straw in the pen. 6 litters from each treatment were observed. Measurements of piglet body temperature were made at 0h, 2h, 4h, 8h and 24h after parturition. At ?8h? the body temperature of the piglets in the Straw group were significantly higher (P=0,0149) than the piglets in the Control group.

In cooperate with Asko Cylinda we have developed a new heat system too short the process time and reduce the energy consume in a dishwasher and still have it too be a class AAA. The environment and quality is important for the company too still be the number one on the market, If they want too keep that position the product developed of new innovations will be very important. The systems we have developed are more effective and reduce energy up too 25 %. The process time is reduced too less than two hours, from the today two and half-hour. The solutions are too heat up the rinse water and the dishwater at the same time, with a new heating system and it make are solutions unique and effective. Its good for the dish and the environment.

Entrepreneurship as playing a important role for economic growth has been discussed by a number of theorists such as Joseph Schumpeter and Israel M. Kirzner. William J. Baumol developed these theories as he considered that all entrepreneurship doesn?t lead to economic growth, some entrepreneurial activities may even lead to stagnation.