In connection with Henriksdals wastewater treatment plant (WWTP) a smaller plant is situated called Sjöstadsverket where new methods for wastewater treatment are tested and evaluated in different process lines. On one of the lines experiments with enhanced biological phosphorous removal (EBPR), have been carried out to evaluate if it is a good alternative to traditional chemical phosphorus removal. This thesis evaluates the results from the experiments conducted during fall 2005.The incoming water from Hammarby Sjöstad consists of only household wastewater, which gives a wastewater with high concentrations of nutrients and organic carbon. This is partly positive, because one of the limiting factors for effective biological phosphorus removal is the lack of easily biodegradable organic carbon. The high concentrations of ammonium and phosphorus demand a high reduction to achieve the requirements of outgoing concentration.To optimize the process experiments with different recirculations and different aeration techniques have been made.

Background: Society of today is characterised by greater dynamics and a constant demand for innovation and fresh ideas. This development is often named "the new economy" or "the knowledge society". Independent of how one chooses to name this society, most individuals seem to agree upon the fact that knowledge grows more and more important. New competencies, such as new knowledge and new forms of organising, will be demanded for corporations to be successful in the future. In recent years it has become more common with corporations based on projects.

The horse is a homeothermic animal and to keep a constant body temperature in winter season is important. Acclimatisation is to provide means for a good thermal insulation consisting of skin, hair, and an outer air layer. The skin covers the horses body and it is composed of three main layers where the top layer of the epidermis consists of dead keratinized cells that are constantly being sheed. The dermis is composed of collagen connective tissue that give the skin its strength. The bottom layer with subcutaneous fat provides a thermal insulation and can be used as an energy reserve in cold weather.

The purpose of our study is to examine whether stress among social workers is present, and if so, what strategies they and their supervisors use to manage work-related stress. The study is based on a qualitative method. The data consist of interviews, with six social workers and three supervisors. The study?s theoretical framework is based on KASAM, SOC-sense of coherence by Antonovsky, demand- control- support model by Karasek & Theorell, stress theory by Hans Selye and coping strategies by Lazarus.

Göteborg Energi has a surplus of district heating during spring, summer and fall. The heat surplus is due to a constant production of waste heat from oil refineries and heat from waste incineration over the year. It would be desirable to increase the demand for heat and the uptime for the newly built combined heat and power generation plant, Rya Kraftvärmeverk. One alternative could be to integrate Rya Kraftvärmeverk with a pellet production facility. By producing heat, electricity and pellet in a joint process the energy use can be decreased.

This essay investigates the function of fictional space and thematics in Line Knutzon?s dramatic works.My main theoretical concept is thematic unity, factors that unite several plays by one author.I have found three major themes: the encounter, identity and childhood, which I study in five of Knutzon?s plays: The Splint In The Heart, The Latest Thing, First You?re Born, The Air Others Breathe and The Time Will Soon Come.I study three aspects of space: fictive space, where the play is set, the characters? inner space and exterior space, that which is outside fictive space: society. Fictive space is shown mainly via dialogue and context.It is evident that the themes, most clearly visible in the five chosen plays, are very important in Line Knutzon?s dramatic works. Most typical is the way she portrays childhood memories, in monologues showing that her characters exist in a ?hole?, in the void between childhood and adulthood.My investigation leads to the conclusion that Knutzon deals with existential matters: there is a kind of constant chaos, within her characters, expressed in actions and thoughts.

Title: Festivalernas Intåg ? Korröfestivalen- en bordunstämmas resa genom festivaliseringenThe Korrö festival- The establishment of a Swedish Folk Music Festival.This thesis describes how folk music festivals have been escalating during the past few and how they have influenced Swedish folk music. To reach my results I have been studying one festival in particular which is the Korrö Folk Music Festival. This event started in the mid-eighties as a small happening that attracted almost exclusively musicians that were a part of the bordooon movement. The bordoon movement gathered a couple of days in the summer at what they called the ?Korrö bordunstämma? to build instruments and play folk music.

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.

The purpose of this thesis is to examine the networks of interlocking directors in the 50 largestSwedish companies on the Stockholm Stock Exchange during the years 1990, 1995, 2000, 2005and 2010 and seek explanations for the observed developments.Our findings indicate that the density and concentration of the network has decreased during thefirst ten-year period and stayed constant during the second period. The development of theoverall network is not consistent throughout all corporate groups. Most notablyHandelsbankssfären seems to experience increased density and connectivity whileWallenbergsfären is experiencing the reverse.The changes during the first ten-year period is deemed to come mainly from changes inregulations pertaining to both the opening for international capital investments as well as looserrestrictions on domestic capital investments. These changes have caused decreased concentrationof ownership, as well as the emergence of new owners, which is reflected in the board ofdirectors.During the second ten-year period the changes are more pertaining to the individual boards andboard members, without flowing through into the overall network. Our findings indicate thatthese changes are caused by the increased professionalization of boards and board work, whichhas gained momentum through the creation of the Swedish Corporate Governance Code..

The present work has been implemented as a literature study aimed to investigate the prevalence, possibly causes and consequences of an eating disorder. In today's modern society individuals are living with a constant reminder from the media about how a person should look and act to blend into the social norms and expectations of the modern society. This literature review has been analysed on the basis of concepts such as identity, gender identity and gender. In addition previous research has been analysed in terms of themes, history, possible causes/risk factors, media, body image and control, depression, shame and guilt as well as culture. The above themes were analysed on the basis of behaviouristic theory and role theory.

With background in the acknowledgement of the current period of major change in the characteristics of traditional Swedish foreign policy, considering the membership in the European Union, as well as the new contextual scenarios that Sweden has been situated in after the end of the cold war, this thesis aims at scrutinizing the Swedish Foreign Policy from 1991 to 2010. The purpose of the thesis is further to localize continuity and change in the ideas which Sweden has explicitly stated in its foreign policy. Based on the theory of institutionalism, the thesis also aims to bring forward plausible explanations built on the main empirical findings. This has been done by identifying different types of goals and means within realism and liberalism as well as categorizing each theory within three ideal types.The chosen research method has been a qualitative text analysis with focus on an ideational analysis. The material on which the descriptive analysis is based upon is constituted by the annual statements of government policy in parliamentary debates on foreign affairs.The results of the thesis show that the ideas that are related to solidarity, consensus and active foreign policy are constant through the period of examination.

Half of Sweden's productive forest land is owned by individual forest owners. Research studies show that forest owners have more objectives with their forest than a high net present value, and that the suggestions of the forest management plans doesn?t always correspond to the forest owners? objectives. Through a qualitative study we conducted a discussion about objectives at stand level with the aim of making a more specific formulation of the forest owners? objectives. We asked about the forest owners' objectives at stand level, what forest management they conduct in order to achieve the objectives and how this management affects the net present value of the property. Based on the results of the interviews, we analyzed what kind of factors decide where the objectives place themselves in the landscape and if the objectives at stand level are consistent with the overall objectives for the property. Many forest owners questioned the idea of talking about objectives at stand level, and they didn?t always have their objectives clearly defined.

Nitrogen deposition leads to environmental damage in areas where the nitrogen deposition is high. Southwest Sweden receives an annual nitrogen deposition of up to 20 kg N/ha. Nitrogen that is not assimilated by the vegetation is accumulated in the soil, which may lead to nitrogen saturation and an elevated risk of nitrogen leaching. Nitrogen leaching from forest areas in southern Sweden has proven to be higher than from agricultural areas, which have been thought to be the main contributors to elevated nitrogen levels in rivers and lakes. The amount of nitrogen that leaches depends on the fraction of the total nitrogen in the soil that consists of nitrate, since nitrate is easily transported through the soil.

The aim of this paper was to examine how social workers' comprehension of the need of financial aid exists in, and is influated by, the organisation they work in. To investigate this, we asked ourself questions concerning how the social worker view the way that the finicial aid-system and work surrounding it is formed, whether the social worker's understanding of the need of financial aid co-exists with the percieved common understanding of the work place (do the understandings coincide, do the social worker adjust his or her understanding or is it possible to have a separate understanding), whether the social worker feel that he or she have discretion to influence the organisation and how possible conflicts between different views are handled. We felt that a qualitative method would best help us answer these questions. We therefore interviewed seven social workers working in the same organisation. We then looked at our material from an organisational theory perspective, focusing on the individual in the organisation.We found that the social workers were socialised into the organisation and adapted the norms and values that existed there.

It is important that children develop their communicating skills to be able to interact withother persons in different social contexts. Without the necessary skills, the child will struggleto understand others, as well as to be understood. My qualitative research takes place in a preschoolclass at a primary school in Stockholm, where I from a sociocultural perspective onteaching and learning aim to clarify how the students? ability to develop their linguisticperformance and their communicative competence is stimulated within this primary preschool?seducational framework. Empirical data was collected both through observations ofthe daily activities in the pre-school class as well as through interviews of three employedteachers.My research indicates that the educational framework in this pre-school class is structured tocomply with the official Swedish Curriculum, Lpo.