The aim of this study was to examine the current and historic mercury(Hg) load of the lake Storjuktan due to its recent exposure to a local potential source of Hg in form of the Sulphide mine Blaikengruvan(2006) and an earlier potential sources of Hg-load, the damming of the lake(1960s). Sediments were extracted using a HTH-sampler, freeze-dried, and analyzed for tot-Hg, LOI and activity of 210Pb and compared to samples extracted prior to the opening of the mine(2006). Constant initial concentration (CIC)-dating model was used for dating the samples. Low levels of Hg (100ng/g) were found throughout the lakes sediment. The highest levels of Hg(220ng/g) was detected at a depth of 4-5cm dating back to the mid 1970:s, suggesting that increased levels of atmospheric Hg rather than damming of the lake has caused the increase of Hg.

Debatten om ekologisk kontra konventionell odling har blossat upp allt mer, förespråkare från båda synsätt har sagt sitt genom slagfärdiga debattartiklar och diskussionen har sedan fortsatt vid middagsborden runt om i landet. Denna kandidatuppsats i ämnet landsbygdsutveckling syftar till att undersöka vilka drivkrafter som kan ligga bakom olika aktörers engagemang i jordbruksfrågor och hur de ser på vad som är en hållbar livsmedelsproduktion. Uppsatsen syftar även till att utforska hur informanterna framställer sig själva och andra aktörer i debatten som förts kring ekologisk kontra konventionell odling. Vem bär enligt informanterna ansvaret för jordbrukets utveckling? Behövs en radikal omställning i hela livsmedelsproduktionen för att nå mer hållbarhet eller räcker det med att enbart göra små justeringar? Det empiriska materialet består till största del av fyra informanters syn på dessa och liknande frågor. Detta material har sedan analyserats med inspiration från Erving Goffmans teori om intryckskontroll och Ulrich Becks teori om risksamhället..

This thesis highlights the importance of social relationships for high school adolescents? identity in a multicultural school in Stockholm?s suburb. The second purpose of this thesis is to shed light on, if the school sees the students? cultural background as an asset and how teachers can take advantage and implement it to the way they teach .The theories in the study were developed by Urie Bronnfenbrenner; The ecological theory, Pierre Bourdeau; The three forms of capital and George H. Mead; The significant other, The generalized other and "I" and "Me".

In 1990 the education training program for teachers working with children with special needs was changed. One major difference in the new program compared with the former one is that the specialized teacher is now mainly supposed to supervise teachers instead of teaching pupils who have learning difficulties. The aim of this qualitative interview study has been to find out what the specialized teachers think about there education, and how this could influence children with cognitive disabilities in special schools. I have interviewed six teachers who specialized in teaching pupils with cognitive disabilities. Three of them where educated prior to 1990 and the others were educated after 1990.

It is important to work with economic, social and ecological dimensions in order to reach sustainable development. Furthermore, these dimensions are supposed to work opon together. Green Flag´s aim is to process these dimensions in the thematic work in preschool, where children are involved. The aim of this study is to find out how certificated Green flag preschools work with the three dimensions in the education of sustainable development practically and how the children participate in this work. I have used a qualitative semi-structured interview to find out preschool teachers´ thoughts and opinions about how they work with sustainable development and how they make the children involved.

Due to the growing population in Stockholm, some of the urban green areas are beingsubjected to exploitation. Hammarbyskogen is an urban forest in the south of Stockholm andis an example of a green area that is planned to be transformed into an urban environment.This paper investigates key qualities and values of an urban forest of Hammarbyskogenvalued by local inhabitants of the neighbourhoods of Hammarbyhöjden and Björkhagen in thesouth of Stockholm. In addition to that, the study seeks to investigate people?s perception ofthe planned development of the forest as well as investigate how these perceptions andqualities are being incorporated into the process of neighbourhood development.Using text analysis, interviews and discussion forums, findings have been made showing thatthe local inhabitants value the urban forest mostly for its ecological and recreational qualities.Regarding perception of the change, people are either positive or negative to the developmentwhich can be explained by people?s experienced sense of place and place attachment of thearea and the forest itself. The study has also shown that the urban planners rely on localinhabitants? view, as well as on expert knowledge during the process of planning.The results of the study contributes to a better understanding of why and for what purposesurban forests are important for the city dwellers..

Elever arbetar ofta med textuppgifter när de arbetar med matematisk problemlösning och förståelsen av textuppgifter kan vara problematisk för många elever. Som lärare är det viktigt att veta vad som är svårt och vad som kan underlätta förståelsen för elever. I denna litteraturstudie undersöks vilka språkliga aspekter som kan försvåra för elever i årskurs 1-3 när de läser matematiska textuppgifter samt vilka undervisningsstrategier som kan underlätta förståelsen. Studier på svenska och engelska från år 2000-2014 togs fram genom en systematisk sökning i databaserna LIBRIS och ERIC. Resultatet visar att begrepp, symboler och siffersymboler kan försvåra förståelsen.

Syftet med den här studien har varit att undersöka hur kartläggning av ett processflöde kan leda till förslag på effektivisering. Studien är gjord på uppdrag av företaget LKDATA i Linköping som ansvarar för bland annat Linköpings kommuns IT-system. Studien behandlar beställningsprocessen av datakommunikation mellan kommunala verksamheter och LKDATA. En nulägesanalys gjordes för att skapa en förståelse för hur processen ser ut och för att identifiera vilka problem som finns. En kvalitativ metod valdes för insamling av data.

The aim of this quantitative study is to describe the prevalence of mental health problems within the group of children and adolescents who receive support from two in home care units within the social services of Rinkeby-Kista and Södermalm stadsdelsförvaltning in Stockholm. Another purpose is to examine whether socioeconomic background and/or gender are associated with the prevalence of poor mental health, or mental health problems of a specific kind, in the studied population. Mental health is measured with the SDQ, a behavioral screening questionnaire that is widely used in Sweden and internationally. The study is based on data collected by the two units, which routinely screen children and adolescents with the SDQ. The main results of this study indicate that mental health problems are common in the studied population.

Miljöproblemen blir allt mer aktuella, människor blir mer upplysta och utbudet av de ekologiska livsmedlen ökar i butikerna. Allt fler börjar handla ekologiskt, men fortfarande är det merparten som väljer att inte handla ekologiskt trots att de har en positiv inställning till ekologisk konsumtion. För att klargöra vad som ligger bakom konsumentens val av varor intervjuades fyra informanter, två som till vardags handlar ekologiskt och två som handlar konventionellt.  Det finns många anledningar till varför inte konsumenter väljer att handla ekologiskt. När konsumenten står för ett val av vara så är det flera kriterier som spelar in så som kvalitet, hälsa, pris och etiska aspekter. Förutom dessa kriterier så handlar konsumenten utefter vana, kunskap och grupptillhörighet.

Restoration projects are planned and carried out in order to reduce the impact due to anthropogenic influence and to achieve at least good ecological status according to the EU Water Framework Directive. The resilience effort of such restorations is however ambiguous. The aim of this study was to evaluate the potential of follow up restoration measures in Swedish lakes and streams. In particular, we visualized the geographical spread of restoration measures in Sweden and quantified the different types of measures that were implemented so far. Further, we evaluated the extent of sampling of biological factors before and after the restoration measures have occurred. For the purpose of our study, we used the recently compiled national database of restoration measures in Swedish lakes and streams.

By exploring different forms of urban cultivation and looking into future gains of sustainability, I want to focus on unconventional and perhaps necessary ways of building, living and making a living. This will be made through study of literature on the topic.Urban cultivation could be anything from a pot of basil in the kitchen window to a city farm. The core of the concept is that the food is produced where it is eaten, in or in direct vicinity to the city and that it is produced ecologically. There will be many benefits, ecological, economical and social.The world is at a turning point right now where consumption patterns and the industry processed food are questioned and it is important that the things we consume are genuineand authentic. We want food that is locally and ecologically produced; food that we can trust.

When constructing a building, a number of aspects must be harmonized in order for it to fulfill requirements ? a building must fulfill requirements such a load-bearing, conservation of energy and a good indoor environment by means of, among other things, moisture proofing .Moisture problems in buildings can affect health negatively. As we are increasingly staying in indoors, demands on a good indoor environment are higher.This work starts with examining moisture problems in slab-on-ground solutions, and then links the various scenarios to moisture problems in a concrete slab of a real building. The building with moisture problems is located in Årby by in Borlänge and moisture damage was found in the slab at an apartment adjoining wall.By reviewing literature written within the field of moisture problem, making hand calculations and modeling in the program Comsol Multiphysics, judgments are made to find explanations as to why the rise of moisture occurred in the building in Årby by.Generally, the following guidelines may be used to reduce the risk of moisture problems in slab-on-ground constructions:Drying of construction moisture before laying the floor material.Using draining layer beneath the slab, to prevent capillary suction.Using insulation under the slab, partly for comfort and to establish the temperature difference between the ground and the concrete slab.Avoid direct contact between the wood and concrete, due to degradation and fouling smells that normally occurs.If necessary, use additional vapor barrier.In addition to the above, there are various methods for moisture-proof and moisture-monitoring by design or by the method ByggaF suited for the entire construction process various events..

This master thesis covers the seasonal planning of a small scale hydropower system. The system in this study is owned and operated by Mälarenergi Vattenkraft AB. The total system consists of 4 different main rivers with 24 hydropower stations and several dams. The total installed power in the system is 43.75 MW. Most of the hydropower stations are regarded as small scale hydropower stations and thus entitled to green certificates.In this report the issue of planning is formulated as an optimization problem.

Svensk Växtkraft is the owner of the biogas plant in Västerås. The company is planning to increase their treatment capacity at their biogas plant. In connection to this work it is also possible to make some energy saving changes to the biogas plant. The objective of this study was therefore to make an electricity and heat survey of the biogas plant, a detailed study of the heat consumption in the sanitation step and also a comparison of energy consumption with the present sanitation method and an alternative strategy where the waste is treated in 55 °C during 10 hours (the current method is heating to 70 °C during 1 hour). The energy survey was conducted in close collaboration with staff at the biogas plant. The current during normal operation was measured, power was calculated and multiplied by the time of usage to obtain the energy consumed.