Lake Bornsjön is situated 30 km southwest of Stockholm in a rift valley lake and consist three basins outstretched in northwest-southeast direction. The surface area is 6,7 km2 with a maximum depth of 18,3 meters, a mean depth of 9,8 meters and a retention time of the water of 6,5 years. The drainage area is 42 km2 and consists mainly of arable land (ca 1000 ha) and productive forestry land (2500 ha), but in the drainage area there are also restored and fairly newly constructed wetlands.Today the Stockholm area receives its drinking water from Lake Mälaren, but if there would be any pollution of this source, Lake Bornsjön would act as the water source. The area surrounding the lake was bought already in 1899 by Stockholm Stad for protection of the lake and was taken over 1993 by Stockholm Vatten AB. It has been a water protection area from 1988 and it was also accepted as a nature reserve in 1995.

Storage of biomass is associated with problems like heat development, biomasslosses, and reduction of the fuel quality. Certain processes such as biological- andchemical degradation are responsible for these storage problems. This master?sthesis was carried out at Vattenfall Research and Development AB and is alignedtowards quantifying the biomass losses from short-term storage (1-2 months) ofbark and recovered wood. The biomass was stored in outdoor piles during differentseasons, campaign 1 (summer) and campaign 2 (autumn).

Studies indicate that between 6-9% of all children has some type of voice problems. Voice problems in children may have different etiology and can affect all ages. In Sweden, there is a lack of a standardized questionnaire addressed to children with voice problems and their legal guardians. The purpose of this study was to translate and validate the Pediatric Voice Handicap Index (pVHI) in Swedish children aged 6 to 10 years. The study was carried out through an internet-based assessment form for children referred to speech and language pathologist/ phoniatrican due to voice disorders in Sweden and a matched control group of children without voice problems.

Methane (CH4) is a greenhouse gas (GHG) that contributes to the global warming. One of the largest sources of methane is livestock, preferably ruminants which alone counted for 30% of the total agricultural anthropogenic methane emissions in the year of 2000. The reason to why ruminants are such large contributors of methane are that the gas is produced in the rumen by enteric formation and leaves the animals by belching, exhaling or by the excreta.Diets high in concentrates can result in a lower emission of methane. Also diets with a high content of starch, such as alfalfa-grass, have a methane-decreasing. It is profitable to reduce enteric methane formation since that form of methane is unavoidably lost.

The empirical material of this study consisted of tweets by four leading politicians in Sweden: Carl Bildt of Nya Moderaterna, Annie Lo?o?f of Centerpartiet, A?sa Romson of Miljo?partiet and Jonas Sjo?stedt of Va?nsterpartiet. The aim of the study was to examine how they use Twitter as a political tool and what that says of the mediatization of politics. What content did they publish, how did the content differentiate between them and what political messages and other subjects occurred in their tweets? Does the political debate become fragmented because they?re only allowed to use 140 characters on Twitter? The theoretical framework and method applied for the research was based upon critical discourse analysis (CDA), with special interest in ideology and mediatized discourse.The result of the study showed that the content they published consisted mostly of criticism towards political opponents, rather than of independent political opinions.

The purpose of this essay is to explore how social media affect the political orientation and commitment of youths. Three scientific questions highlight the purpose from different angles. The didactic perspective is discussed in the initial and closing discussion, and is analyzed in the corresponding chapter. Two methods are involved in the study; one survey and one interview with a focus group. The survey had a total of 98 respondents from four different classes, all in the first grade of upper secondary school.

Aim: The purpose of this study is to, referring to Shulman?s pedagogical content knowledge theory (PCK), examine how selected Physical Education teachers, educated in GIH and with a maximum of two years' work in upper secondary school, pursue their education in training theory. Moreover, another purpose is to examine how their education at GIH has prepared them for teaching in this subsection. Questions to be answered:? What are teachers' attitudes to training methods as part of physical education and health in upper secondary school?? In what way, referring to PCK-theory, are teachers working with training theory??In what way do the teachers think that their education at GIH has contributed to their teaching in training theory, referring to the pedagogical content knowledge theory?Method: The study has a qualitative approach and study design consisting of five semi-structured interviews with teachers working with Physical Education in upper secondary school. The selection was made considering that all teachers have been educated at GIH and had a maximum of two years working experience.

The aim of this paper is to elucidate and analyze history teacher's didactic choices in the conflict between unequal educational materials and the requirements of equality in the curriculum of Swedish secondary school. The empirical data consists of interviews with five secondary school history teachers, observations of their lessons as well as analysis of their tests. The starting point was to investigate teachers' didactic work in the role as a bridge between the non-equal historiography presented in textbooks in history and the curriculum?s demands for equality. Three different approaches have been observed in the teachers' didactic work when considering gender perspective into their teaching: that women become extensions in a male-dominated historiography; that another part of the story is presented when a gender perspective is considered; and that the gender perspective is included in history teaching and becomes an integral part of all the content of the subject.Several of the teachers acknowledged that gender equality is less prioritized than the courses core content and related assessment criteria.

The aim of child health care is to promote health and development for all children, to early identify problems that concern children´s growth and development and to prevent ill-health among children. Today in our society the proportion of children who are underweight are few.The aim with this study was to describe paediatric nurses experience in meeting with underweight children and their parents. Interviews were implemented and analyzed according to qualitative content analysis. Focus was placed on looking at differences and interpretations in the text content. The analyse resulted in six main categories, such as a need of sensitivity and a holistic view from the nurse, difficulties in handling the meeting because lack of tools.

Abstract:Title: ?Solo has got a little sister! ? A study how the form and content differ between the magazines Solo and Solo G(Solo har fått en lillasyster! ? En studie om hur formen och innehållet skiljer sig emellan tidningarna Solo och Solo G)Number of pages: 37 pagesAuthor: Johanna LaurellTutor: Göran SvenssonCourse: Media and communication studies CPeriod: Autumn term 2005University: Division of Media and Communication, Departement of Information Science, Uppsala University.Pupose/Aim: This essay aims to investigate how the form and content in the magazine Solo G, which direct to a younger target group, differ from the magazine Solo which directs to an older target group. In this analyse of form and content have I also chose to study how the magazine present femininity and how this affect the female identity.Material/Method: The material consists of 4 magazines from Solo and Solo G during 2005. A qualitative text analysis has then been used as a method of analysing the material.Main results: Solo G focuses a lot more on celebrities than Solo. Solo G uses the celebrities as role models to the youth to look up to.

Agriculture has to be performed in a sustainable way in order to sustain high yields and to support a globally growing population. Functional soil properties are fundamental for high yields and in order to achieve good soil conditions sustainable management is a key. Loss of soil organic material and increased soil acidity are problems associated with degradation of soils and hence less sustainable agriculture. In this thesis, the effect of different agricultural systems on soil organic matter, pH and yield was examined. The systems examined are a cereal system with straw removal or returning and a ley system, all with different nitrogen levels.

Previous research on Twitter use among nonprofit organizations has been centered on the US, thisessay Nonprofits on Twitter: a content analysis of Swedish nonprofits working for gender equalityseeks to expand that research to include nonprofit organizations operating in Sweden. By studying tenSwedish nonprofits all working to achieve gender equality this study can begin filling a gap in theexisting research. Focusing on both what kind of messages the organizations publish, and what kind ofmessages engage the organizations? followers. This is achieved by quantitative content analysis:categorizing messages into the categories Information, Community and Action, and measuring whichof these categories got the most shares, comments and likes.

Ethanol produced from lignocellulosic biomass has the potential to become a promisingalternative to gasoline. In this work the simultaneous saccharification and fermentation (SSF)technology was applied for ethanol production from hardwood with focus on cell growth,ethanol production and contamination.The SSF was performed at PH 5.5 and 35°C for different suspended solid concentrations(8%, 10% and 12%) of pretreated birch slurry which contained 16 % total suspended solids.Two different hexose fermenting yeast strain (Ethanol Red) and pentose fermenting yeaststrain were used.Quantifying the concentration of chemical components and metabolites in the fermentationmedium demonstrated that glucose and xylose are the major fermentable sugars in the slurry.The higher load of slurry (12%) represents a higher content of carbohydrates and potentiallyhigher end concentration of ethanol. Moreover, more lactic acid is produced with the lowerload of slurry (8 % or 10 %), presumably due to a result of a less inhibitory environment forbacterial growth. In this context, acetic acid sticks out as the most important inhibitor withconcentrations of 15.2 and 12.5 and 9.7 g/l respectively in the 12 %, 10 % and 8 % (ofsuspended solids) trials. Using pentose fermenting yeast may lead to higher ethanolproduction, lower xylose uptake and lower lactic acid formation.

This master thesis work was done at Saab Underwater Systems AB, a company at the cutting edge of underwater technology. Here torpedoes and other underwater vehicles are developed and manufactured. The major customers are navies of different countries, mostly the Swedish navy. The aim of this master thesis is to develop, construct and evaluate an automatic Trim System for Unmanned Underwater Vehicles. The task of the system is to change the position of the centre of mass and the vehicle?s total mass or volume.

Composting is a process in which organic matter is mineralized by microorganisms. In January 2005 landfilling of organic waste was prohibited in Sweden. With this prohibition composting has become an important alternative to handle the produced organic wastes. One problem with continuous small-scale composting is the production of organic acids that will inhibit a further composting process. The aim of these theses was to study what effects temperature and dry matter content had on the production of organics acids, and what effect the organic acids had on the mineralisation of the substrate as well as the stability during storage of the product.