Transformation of inorganic mercury (Hg) to methyl mercury (MeHg) is a biotic process that is proposed to be conducted primarily by sulphate reducing bacteria (SRB). The formation of MeHg is of great interest because it is the mercury species that biomagnifies to the greatest extent in the aquatic food webs; about 90 % of all Hg in fish is MeHg. Our understanding of factors involved in the production of MeHg is very important for making a reliable risk assessment. The purposes of this study were to investigate the different factors that control the solubility of Hg and the production of MeHg in a contaminated lake sediment. The lake Ala-Lombolo, Kiruna municipality, is well-known to be contaminated by mercury from different sources. Sediment cores were sampled at three different locations (N, SW and SE) in the lake and divided in three different layers; 0-5, 5-10 and 10-15 cm.

This thesis is dealing with how students living in a student corridor experience the circumstances in their corridor. The aim is through interviews with students living in the corridors get a inside look at their situations. I want to examine how changed conditions of life, new meetings and new experiences will influence their personalities. How are the students living in the corridors affected by conflicts and how do they protect themselves from the influence of the rest of the group living there? In addition to that I want to know what they think is important prioritises throughout their student time, like if there are anything important that a student should take time to do beside the studies.

Regulation of rivers by dams and reservoirs is a good example where anthropogenic impact could be considerable both in the local environment, but also has major implications upstream and downstream. This study was accomplished as a literature study of the river Nile, which is extremely important for water supply. The purpose of this study was to investigate the consequences of the construction of the Aswan High Dam, to obtain a consistent flow for water supply, irrigation and power generation in Egypt. Since Egypt has a very hot and dry climate large amounts of water in reservoir is lost to the Nubian aquifer system and by evaporation. The consequences from constructing the dam are considerable.

När en kommersiell hamn byggs ut fordras omfattande muddringsarbete för att säkerställa ett brukligt djup för sjöfart. Då stora delar av muddermassorna ofta är förorenade av tungmetaller och miljögifter krävs särskilt omhändertagande av dessa. Traditionella omhändertagningsalternativ består av att deponera massorna på särskild avsedd plats på land eller tippa till havs, något som inte tillåts för förorenade sediment. En relativt ny metod är stabilisering/solidifiering (S/S) som innebär att muddermassorna behandlas med ett bindemedel för att sedan kunna användas som fyllnadsmaterial i exempelvis kajkonstruktioner. Dessa alternativ behöver noga vägas mot varandra med hänsyn till ekonomiska och miljömässiga aspekter.

Utvecklingen av Living Labs kan förklaras av framförallt tre utvecklingar. För det första en uppfattning om att vissa behov i samhället inte kan tillgodoses av enskilda organisationer. För det andra att innovation allt mer betraktas som öppna system och slutligen att användaren har erkänts en större roll i innovationsprocesser. Living Labs är en experimentell innovationsmiljö som definieras av: ? användarens delaktighet i fokus ? tvärsektoriell samverkan; mellan näringsliv, offentlig verksamhet och ideella aktörer ? öppenhet ? utvecklingsarbetet sker i verkliga miljöer Detta relativt nya fenomen uppvisar en rik variation av uttryck och de olika nyckelattributen som grundar begreppet Living Labs tillskrivs olika vikt. Studien ämnar besvara frågeställningen: Vilket samband finns mellan de organisatoriska kompromisserna och Living Labs konceptets nyckelattribut? Studien är en komparativ undersökning av två Living Labs som har tagit mycket olika uttryck.

The aim with this study was to increase the knowledge about as well as shed light on hidden refugees? living conditions by compiling research about hidden refugees? living conditions and complete this research by doing a field survey with people with different knowledge and experience of hidden refugees? living conditions. The result was analyzed on the basis of Nussbaum?s list of ten human abilities and the convention of human rights. The study showed that hidden refugees' living conditions are experienced as very critical, and characterized by lack of human rights as well as means to utilize and develop their abilities.

I?ve chosen a subject that's close to my heart, as a student who has experiences the need of a change in the traditional student living.I've focused my theses on ?nding the key ingredients for improving an individuals time as a student. In a time when students are struggling to ?nd accommodation that ful?lls the need of being close to university, close to social places, adequate size and affordable. This is close to impossible! This is not just a problem in Stockholm but an international dilemma.The heart of my thesis is, how can we create clever ways of student accommodation with emphasis on community and a more sustainable way of living?Only when we start embracing change and by breaking out of our traditional individual living, can we then start to realise and recognise the bene?ts of working, studying and living together.

AimsThe aim of this study was to conclude whether women living and staff working in a women´s shelter feel experience a need of physical activity in the shelter and also what thoughts women living and staff working in the shelter have regarding possible access to physical activity. Following questions were adressed: Does women living and staff working in the shelter experience that there is a need of physical activity in the shelter? What does women living, and staff working, in the shelter think about the physical activity conducted in the shelter? Why does the women living in the shelter choose to participate in the physical activity? Are there any connections between symptoms which battered women can suffer from and symptoms which scientific studies say can be reduced by physical activity?MethodsThe study is based on five interviews in order to understand and illustrate how women living in a shelter relate to physical activity. The answers from the interviews has been correlated to scientific results and other literature in the area. Literature studies have also derived background information as well as a deeper knowledge regarding in what way violence against women affect the abused woman.ResultsThe results show a need for physical activity at the women?s shelter where this study was conducted.

Interference in an ecosystem means a disturbance. When harvesting, forest roads have to be build to cope with heavy duty vehicles. Crossing brooks can not always be avoided. In this case bridges or culverts have to be built. There are many different kinds of culverts and depending on what type you choose and how you place the culvert, the watercourse and the water organisms can be harmed in different ways.

Jönköping's municipality requested a diploma work witch would present the experiences, as arisen during the existence of the echo village Smeden.To recive information for the background, literature at the university library were searched at the database "Libris" with words like "echo village" and "ecological living".Data was retrieved from 28 questionnaires that were sent out to the inhabitants of the echo village Smeden. The questionnaires contained questions about experiences, opinions, ideas and thoughts about living in this echo village. The results were analyzed and presented by diagrams and tables and showed that the inhabitants where most unsatisfied with the sewer and the system of the toilet. In the opposite the inhabitants experienced that the remaining systems were in satisfactory and the majority of the inhabitants were very pleased with their living conditions.Conclusions of this study are that an echo village would be a suitable alternative to an ordinary living and that ecological living would be something that would work well even in the future. An important thing to remember is that the systems of the households must be easy for the inhabitants to maintain otherwise the environmental thinking would be in risk of failure if some don?t have the energy to manage this properly..

The aim of our study is to examine experience of the quality of life for elderly people with assisted living from their own, and caretakers, perspectives. We also aim to examine how elderly people in assisted living, and caretakers, experiences that they could affect the elderly people´s quality of life. The study is based on a qualitative method and the data is collected by interviews with four recipient of care and three care takers. The result shows that there are many factors that have an importance when it comes to quality of life for the recipient of care. It has shown in the study that the recipient of care and the caretakers put emphasize in the same factors. These factors are health, the affect of assisted living, happiness, relationships and self-determination. The result has shown that the assisted living has a major importance when it comes to the quality of life for the recipient of cares..

The following study aims to investigate the environmental conditions of the harbor of Sk?rhamn, a small fishing community on the west coast of Sweden. The interest to do so rose as a newly built apartment residence failed to connect the sewage pipes of 18 apartments, causing the untreated sewage running into the sea. The parameters accounted for are the C/N ratio, total organic carbon (TOC) as well as total nitrogen present (TN) and ?13C in the top ten centimeters of a sediment core retrieved in the Sk?rhamn harbour.

Geotextildukar används idag som tillfällig kontroll av sedimentgrumling vid vattenarbeten. Syftet med examensarbetet är att ge ökad kunskap kring olika geotextildukars genomsläpplighet med avseende på suspenderat material, PAH (Polycykliska aromatiska kolväten) och kvicksilver vid suspension av sediment från Karlbergskanalen. Detta har gjorts genom en laboration. Resultaten visar att det inom några minuter bildas en filterkaka på de tre undersökta dukarna. Dukarna blir täta då de utsätts för finpartikulärt suspenderat sediment med koncentrationen 57 g/l hämtat från Karlbergskanalen.

Anlagda våtmarker i avrinningsområden från jordbruksmarker mottar ofta vatten med höga halter av partikelbunden fosfor. Den viktigaste processen för avskiljning av inkommande partikelbunden fosfor är sedimentation. Resuspension är en process som motverkar netto-sedimentationen av partiklar och kan således minska våtmarkers förmåga att hålla kvar fosfor. Syftet med den här studien var att undersöka om A. aquaticus påverkar resuspensionen av partiklar, och om större tätheter av A.

The purpose of this study is to find datable interstadial sediments in the core area of the LateWeicheslian ice sheet extent. Based on geomorphological evidence, three coring sites wereidentified close to the Ultevis plateau in Norrbotten, northern Sweden. Sediment coring wascarried out in two pre-Late Weichselian stream channels and in a sediment basin. Stratigraphyfrom one of the sites, a 100 meter wide meltwater channel, was chosen for further analysis. Thestudied core was 5,93 m long and ended in a lower till unit.