Sewer trenches usually contain material with a higher hydraulic conductivity then the adjacent soil. Thus they can serve as paths of preferential flow in a polluted area. Wastewater from factories can also leak from wastewater pipes and pollute the soil in the sewer trenches.The purpose of this project was to investigate pollutions in sewer trenches and in sewer pipes in the industrial area of Köpmanholmen, 20 km south of Örnsköldsvik in the north of Sweden. To make an estimation concerning the potential of transport of pollutions in sewer trenches, hydrological calculations were performed.Leakage to any greater extent did not seem to be a problem in the area. This is the case both for the concrete and the wooden pipes that have served as factory wastewater pipes.

The purpose with this article is to give examples how to remain and in a long run develop a higher interest in maintenance activities and knowledge. First reason is the changed age-distribution with more number of older employees among maintenance personnel staff and second reason is demand for education due the increasing demand in environmental responsibility.In spite of there is a lot of knowledge of maintenance in national organizations of interests it will not be used in a sufficient extent in many companies. This knowledge is an important base to use to re-built the missing or loosed skills in companies. The national organization UTEK is involved in European projects to validate knowledge of maintenance. Lost of or bad maintenance activities will always affect on the environment.Establish a network between companies is a good way to exchange information in their common business areas.

1.1 billion people are today living without sustainable access to improved water. The debate over the water sector has been dominated by the discussion over whether public or private actors are the most competent to manage it. In this paper the arguments pro and contra the two positions are presented to try to overview the debate and to try to find new ways to approach the question of the people living without clean water. By examining possible alternatives towards the discussion of public and private actors, it might result in some new approaches on how to move closer towards a solution. One alternative is local, small- scale projects which focus on the situation of the targetgroup in most need.

It is important to construct or recreate different types of wetlands and study their retention of nutrients, since knowledge of their effectiveness in this matter is poor. In 2003 a wetland was constructed on an old meadow on the western shore of Lake Bornsjön in central Sweden. The main purpose of the wetland was to reduce the amount of phosphorus entering the lake, which is the back-up water supply for Stockholm when the city cannot obtain water from Lake Mälaren. Large areas around Lake Bornsjön consist of agricultural land and the nutrient concentrations in the inflows to the lake are usually relatively high (approx. 1 mg/l total nitrogen and 0.05-0.1 mg/l total phosphorus).

Bioethanol is one alternative energy fuel that can be produced from different types of biomass. Second generation bioethanol comes from fermentation of lignocellulosic material and can be seen as a more environmental friendly alternative as e.g. forest residues and agricultural by-products are used. To be able to use lignocellulosic biomass in ethanol production, it has to be subjected to different treatments first. In this study, aspen sawdust was used as lignocellulosic material.

In this project we have explored digital tools for service management on the bicycle paths of Malmö. This was done through the participation of citizens in order to attempt to discern how such interactions can be eased using a mobile app, as well as how this app can be designed in order to appear trustworthy with user friendly interactions. We have explored this field by using goal-oriented design through interviews, prototyping and user tests. We have created a digital prototype as a possible solution for how the interactions can be done. Throughout the process interviews were held and user tests with selected members of the user group. To explore the concepts we have used paper prototypes in order to establish the design and then defining the interactions with the help of a digital prototype. Finally we have concluded that a general app for bikers in the city would be functional and that a longer study in the effects of such an app would be interesting as a continuation of this work..

Abstract Title: Ethanol for Scania?s future ? A scenario based analysis Authors: Anna Hansson and Julia Persson Tutors: Annette Cerne ? Department of Business Administration, Lund University Jonas Holmborn ? Head of Advanced Combustion, Engine Development, Scania Lennart Thörnqvist ? Department of Energy Sciences, Faculty of Engineering, Lund University Problem: Oil-based products are the dominating fuels in the transport sector but alternative fuels are currently challenging the world-wide dominance. The large number of alternative fuels that are under development at present makes the future fuel-market impossible to predict. Scania?s ethanol project is associated with a number of uncertainty factors that are beyond the company?s control.

This essay analyses the act of reading August Strindberg?s novel En dåres försvarstal (A Madman?s defence). It reveals the writer?s motif and purpose with the text and it shows how a certain interpretation of the text is crucial for the writer?s intentions to become reality. But it also shows how this interpretation is threaten by several, both intertextual and extratextual, thematically and structural, factors.

Utgångspunkten för denna kandidatuppsats är att den byggda miljön påverkar våra liv och vårt handlingsutrymme. Den byggda miljön kan möjliggöra eller begränsa olika typer av aktiviteter. Leken är en av de mest grundläggande aktiviteterna i vår sociala utveckling och är en del av den sociala interaktionen med andra människor. Leken förknippas ofta med barn, men leken förkommer och är viktig för alla ålderskategorier. Syftet med studien är att ta reda på hur den byggda miljön kan skapa möjligheter för leken att etableras. Vi undersöker om man kan planera och styra leken och vad leken kan tillföra i ett miljonprogramsområde. Många av de miljonprogramsområden som byggdes i Sverige under 1960- och 70-talet är ofta problemtyngda och den byggda miljön lider av ett eftersatt underhåll.

This study focuses on romantic friendship between women in three Swedish novels written between 1836 and 1857: Sophie von Knorring?s (1797?1848) Illusionerna (1836), Fredrika Bremer?s (1801?1865) En dagbok (1843) and Marie Sophie Schwartz? (1819?1894) En fåfäng mans hustru (1857). Also, the connection between women and passion as well as the interesting occurrence of step- and foster mothers is looked upon in the study.The romantic friendship is freely expressed in these novels; love between women is neither presented as unnatural or unchaste. It both challenges the heterosexual matrix? claim on intelligibility and its rules for how desire should be expressed.

Stabilization of subgrade is an internationally common technique to improve the characteristics of a soft soil. Improving the stiffness and bearing capacity of the subgrade enables the pavement to be designed with reduced depths of subbase and basecourse aggregates. This makes the stabilization technique both economically and environmentally interesting. Both natural and stabilized soils have high inherent property variability that should be considered when the characteristic value is derived. By analyzing the spatial variability in stabilized and natural subgrades it is possible get the parameters needed for reliability?based modeling of soil properties.

In this work, a method was developed and evaluated for calculating the life of welds under the influence of fatigue loads from a vibration environment. Typically, a shaker table is used for testing a component against vibration loads. The shaker table creates a vibration environment that is defined in the frequency domain by a power spectrum.Similarly, a virtual vibration table can be used to calculate the same type of load environment, which can then be used to calculate the expected lifetime. The benefit of this method is that it can be used in design, as well as in simulation of tests before physical verification tests are carried out.Today there are methods for calculating fatigue life of non-welded base material, but since many components contain welded joints, there is a need to apply this method to those types as well. To achieve this, the thesis combines two different areas, which together provide a method for fatigue assessment of welds using a virtual shaker table.The methodology is carried out by modeling the component, and its welded joints, in a finite element program.

The Homogeneous Charge Compression Ignition (HCCI) engine is promising in terms of lowNOx, low particulates and high efficiency. Due to its homogeneous charge, where thecombustion starts almost simultaneously from a number of points in the combustion chamber,only lean mixtures are possible to burn because of the resulting rapid combustion, which is muchfaster than the combustion in an SI-engine or a diesel engine. When richer mixtures are used thecombustion will start earlier and also be more violent.To phase the combustion later and lower the combustion speed, external cooled EGR can beused. The EGR-system used in this thesis uses a divided exhaust channel where one channel andits corresponding valve are used only for transporting EGR back to the intake system.Consequently the EGR-valve is connected to the intake pressure. This system is called Direct-EGR (D-EGR).Engine tests verified that the CA50 indeed is phased later when cooled EGR is used.

The aim of this study is to identify factors, which decide wheter you choose to commute with bicycle to work in the winterseason. The study is conducted in Umea, in the norhtern part of Sweden. The study is based on 509 answers from a webbased survey, conducted on municipal employees. The study has investigated which factors that affect different commuting groups from a gender perspective. The groups, which has been compared is motorists, wintercyclist and summercyclists.

This is a case study which investigated the perceived consequences of the organizational change that was implemented in January 2013 at Karlstad University. The study aimed to explore the experiences of the employees concerning the changes in organizational structure and internal communication. This was done through a set of eight individual standardized qualitative interviews with members from different departments. A lot of effort and thought was given to the ethical implications and to create a comfortable and open climate during the actual interviews to ensure that the respondents felt free to speak openly and honestly about their personal opinions and experiences.It is evident that the overall vision was ambitious; aiming to create a more effective organization through cutting off excessive administrative personnel and streamlining decision paths. However according to the opinions of the respondents it was clear that the result was far from the desired goal.