The energy sector of modern time is currently faced with several challenges. These are both production oriented and environmental oriented in nature. The energy of the future is intended to support an increasing demand while at the same time reduce its environmental affection. This stresses a development towards production methods of renewable energy. Among the existing methods, biogas is presented as an attractive alternative.

Urban trees contribute significantly to our society. By providing ecosystem services and a habitat that other urban species and ecosystems depend on, both biodiversity and the people in the city benefit. Some characteristics that the trees possess include functioning as biological filters for the atmosphere and water, as well as positively impacting people's mental health. However, urban trees are challenged by stressors such as pollution and a drier environment, making them particularly sensitive to climate change. The goal of this study was to estimate the expected magnitude of climate change in Gothenburg and compare it with the current urban species' natural climate boundaries to understand the extent of the climate threat and which species appear to be most at risk.

Den biologiska mångfalden är viktig inom lantbruket. Jordbrukslandskapets mångfald är vacker för människan att se på och spännande och rogivande att vistas i. Mångfalden innehåller även en genbank som kan bli mycket etydelsefull i framtiden. Dessutom innebär oftast en rik mångfald bland ogräsen även en rik mångfald bland insekter och andra djur, däribland skadeinsekternas predatorer, vilket bidrar till produktiva åkrar. Ogräsens mångfald på åkern beror till stor del på geografiskt läge, klimat och berggrund.

During the nineties, ecological handling of urban storm water became very popular in Sweden. Together with Chalmers University of Technology and two Swedish communities, DHI Water and Environment has been doing research of storm water ponds and constructed wetlands. This thesis work is a part of that research project. The work has been applied at the Bäckaslöv storm water treatment plant in Växjö, Sweden. The plant consists of one storm water pond and a downstream constructed wetland.

ABSTRACT Tobacco Rattle Virus (TRV) is a soilborne plant virus. It is an important pathogen in potatoes where it causes spraing disease. This disease can lead to significant economical loss for the farmer, so it is imperative to get the proper diagnose before planting. TRV is spread naturally by free-living nematodes (Trichodorus and Paratrichodorus). Transference of TRV to a plant occurs when the virus-carrying nematodes feed on plant roots. The relationship between virus, nematodes and plants is complicated, and has to these days not been fully characterized. The diagnostic methods available today do not work sufficiently.

Children are said to be the future of our society. Hence, how we take care of our children is a cause of concern. This is evident in much of the social work that is carried out in Sweden. One of the times when we find children to be the most vulnerable is when they, for different reasons, are separated from their biological families and placed in foster care. Based on the fact that Sweden over the last century has experienced an increased immigration intake we wanted to take a closer look on how this change of the population dynamics has influenced foster care in the country.

SummaryThe aim with this study is to find which importance the individual pedagogue may have forthe children in the preschool when they create an identity as a girl or a boy. The ownstandards and the values are said lie to shallow for how we as adult chooses to refute girls andboys in the child group. This essay is based on one a narrative study in the form of a life storyinterview. Through interviewing a preschool teacher at two different occasions has I may totake part of her personal experiences of as well working life that private life.If one is paid from the idea about that sex differences not only is something biologicalwithout most also something that is socially constructed over time and rooms, then has ofcourse doubtless the school and the individual pedagogue big importance for how these sexstandard are replicated. I have tried to present the statement on the basis of areas that pursueme come to seem as central.

During the last years, producers and consumers have become increasingly aware of food safety. Foodborne illness and foodborne injury are in best case unpleasant but they can also be fatal. HACCP (Hazard Analysis Critical Control Point) is a preventative food safety system which is aimed to guarantee production of safe food free from pathogens, foreign materials and substances with potential to cause adverse health effect. In order to succeed in developing, installing, monitoring and verifying a HACCP system, there is a mix of hurdles for the company to overcome. While larger food companies meet a difficult challenge, small and medium size enterprises often feel that the hurdles are almost impossible to manage.

Placing children in foster care is today considered the best alternative for children unable to stay in their biological environment. A nuclear family consisting of a father, a mother and a child is the most common family structure within foster care today. The purpose of this thesis is to gain insight on the family norms that control the foster care system. It's a qualitative study based on interviews with six professional social workers within the field of foster care. This method gave us empirical material, that was later analyzed from two main theories and one theoretical concept.

Stump treatment today requires large quantities of clean water mixed with the protective product Rotstop, to fully cover the stump surface. In order to reduce the water consumption without reducing the coverage of the stump surface, the pressure in the stump treatment device can be increased. Therefore, the Phlebiopsis gigantea (Fr.) Jül. suspension used as a biological control agent to prevent Heterobasidion annosum (Fr.) Bref. infection was pressure-tested.

This thesis aims to explore and investigate the use of the cliché ?68 in a contemporary Swedish debate. The sixties and especially 1968 is a historically significant year,and it is marked by political murders, protesting students and political energy. InSweden one of the most notable happenings was the occupation of the student union?s headquarters in Stockholm.

This Master's Thesis studies the attitude that library employees have regarding a sex and gender-neutral treatmentof their clients. The analysis is based upon replies to a questionnaire which was submitted though channels directedat library employees, like BIBLIST and BiblFeed. The respondent?s replies contained a number of welldevelopedcomments making the resultant analysis both quantitative and qualitative in nature.In performing the analysis a theoretical framework combining Hirdman?s gender system with symbolic interactionismhas been used together with literature about gender roles.The questionnaire showed that gender neutrality is a complex concept that can be interpreted in many differentways and is therefore easily misunderstood. It is obvious that sex is an important category when respondents aredealing with their clients, but also that sex and gender are problematic concepts which respondents find difficultto know exactly how to relate to.

The aim of this paper is to describe, visualise- and analyse media’s discursive representations of female politicians in Swedish printed media. The focus of the analysis is to show if, and how these images can be understood and interpreted in terms of a socially constructed gender stereotyped suborder. The paper takes it's theoretical and methodological departure in the discourse analysis, which is combined with feminist political theory. Feminist political theory is concretised in the use of what Yvonne Hirdman calls the "gender system" which arranges the sexes into their respective genders and is based upon two rules/principles/logics: 1) the rule of distinctive separation, and 2) the male norm. Closely related to the aim of the paper lies also the critical theoretic assumption that people has to be aware of their own part in the production and reproduction of the discourse in order to change make a change.

Studien gjordes i syfte att undersöka hur familjehemsföräldrar kan uppleva att deras uppdrag som familjehem påverkar dem själva, deras biologiska barn och deras relationer. Fokusgruppsintervjuer genomfördes med två grupper innehållande fem familjehemsföräldrar i varje grupp. Fokusgrupperna bestod av fem kvinnor och fem män emellan 33 och 61 år. En intervjuguide och en mindre enkät skapades och användes under intervjuerna som spelades in på ljudfiler. Databearbetningen bestod av en fenomenologisk, hermeneutisk analysmetod.

In the next few years the pollutants loading at the Slottshagen wastewater treatment plant in Norrköping is going to increase due to the reason that one of the waste water treatment plant in the district will be shut down.A survey of how these different pollutants are divided in the treatment process is therefore necessary for mapping out both the loading and treatment efficiency.This can be achieved by studying mass balances.Mass balances were carried out for the water treatment process for the mechanical/chemical,biological and the chemical stage.The mass balance studies show that the treatment efficiency was very good. However in order for the mass balances to be quite consistent and to ensure complete coverage of results and conclusions i.e. more reliable results, sludge samples should be collected and taken at different times per day and the influent rate should be investigated.In this work mass balance has been set up in order to illustrate and identify the factors that should be considered and taken care of for further estimation using mass balances in the future. Furthermore this survey results in a calculating model for the mass balances at thisplant.This calculating model is used as a tool to facilitate future calculations for mass balances for the water treatment process at Slottshagens wastewater treatment plant.Moreover it provides a basis for carrying out further estimation of the treatment process in the near future.In this project the importance of some operating parameters was also taken in consideration.This calculating model can be modified so that calculations of such operating parameters i.e. sludge loading and sludge age can be easily performed.Such information can be used further to evaluate different operation alternative in order to ensure an optimal use of the treatment process with in the plant..