The most predominant method for forest harvesting in Sweden is the cut-to-length method based on two-machines, a harvester that fells trees and cut them in a predefined length, and a forwarder which transports logs to a landing area for further transport to a processing facility. New machine solutions have to be much gentler to the ground than today?s machines. To be able to develop a forestry machine that preserves the terrain requires a proper understanding of the interaction between tire and soil.The goal of the project is to contribute to the existing knowledge of forest machine tire-soil interaction and to develop a tire-soil model that enables dynamic simulations of forest machines operating in rough terrain. The modeling has especially been focused on the interaction between tires and soft ground.A comparison of theoretical data of different WES-based terrain interaction models and a comparison test data from a full scale field test is presented.

Eutrophication of the Baltic Sea and Swedish lakes remains a major problem despite many years of effort to reduce the emissions of nutrients. One major source is waste water systems, especially private sewage systems. These sewages accounts for a very large share of nutrients per capita in comparison with citizens connected to larger sewage treatment plants. Norrtälje community has the greatest number of private sewage systems in Sweden. Discharges of nutrients, especially phosphorus, to the Baltic Sea from these sewage systems are significant.

An analysis of a specific application of anaerobic wastewater treatment at a pulp and board mill, Stora Enso Skoghall, was carried out. A literature study was done and effluent wastewater from CTMP pulp production was analyzed. The analysis consisted of a broad constituent analysis and an anaerobic treatment trial. Results from these test where used to calculate the treatment effectiveness and resulting energy potential at the mill.The literature study and constituent analysis showed that toxicity of the water to be treated, due to wood extractives and sulphur content, was of concern. Detoxification chemicals targeting these constituents where used in the anaerobic treatment trial.

The purpose of this thesis is to investigate if elementary school teachers are a vulnerable professional group and if elementary school teachers should be mentally prepared for abusive treatment. Thus determine whether the reduced possibility for certain professionals such as police officers and order guards to obtain compensation for abusive treatment also shall apply for elementary school teachers.To reach that purpose, first the concept of abusive treatment and how compensation for abusive behavior becomes topical have to be straighten out. Then follows an analysis of both the lower possibility to obtain compensation for abusive treatment, but also how elementary teachers can be mentally prepared abusive treatment.It turns out in the conclusion that elementary school teachers are considered vulnerable in relation to the specifications of their work environment and because of that elementary school teachers must be deemed to have knowledge of that they may be subject to abusive treatment. Therefore I believe that elementary school teachers as certain professionals like police officers and order guards may not be granted compensation for every situation of abusive treatment, a lower limit must apply..

Background: Chronic pain is a condition that approximately 18% of the Swedish population suffers from. This condition affects many aspects of a person´s life and causes psychological, physiological and social suffering. Multimodal treatment is considered the most effective treatment for patients with chronic pain. Patient participation and motivation are very important to treatment. Aim: The aim of this study was to explore patients´ experience of a multimodal chronic pain treatment program regarding their experience of patient participation and interaction with the rehabilitation team.

Eutrophication is an environmental problem that affects more than ten percent of Swedish lakes. Excess nutrients increase the growth of algae, and cause major problems in the ecosystem through oxygen-free bottoms, fish kills, and at worst dead bottoms. Agriculture accounts for 44% of human emissions of phosphorus to lakes and rivers. Leaching occurs of particle bound phosphorus and of dissolved phosphate. The amount of phosphate in the soil solution that may be leached is partly due to the prevailing pH in the soil solution. The purpose of this study was to investigate how the relationship between phosphate solubility and pH was affected by liming.

In this thesis, two studies with different drills were included. In one of the studies two drills were compared: Väderstad Rapid and Väderstad Spirit. In the other study various drills for direct drilling were compared. The study with Rapid and Spirit was placed in two locations with different autumn tillage; one on ploughed land in Uppsala and one on cultivated land in Västerås, both with relatively high clay content. Rapid drills have a single disc coulter, while the Spirit drills have a double disc coulter. Various aspects were compared such as aggregate distribution, seed placement, emergence, crop yield and economic outcome.

The access to good sanitary facilities is an important factor that elevates the experienced living standard as it improves hygiene and reduces the transmission of deseases. The ratification of the millennium goals by 189 countries demonstrates that this is an important international issue. Together the countries have taken upon themselves that the proportion of the population that lacked access to sustainable safe drinking water and sanitary facilities in the year 2000 will have been reduced by half by the year 2015. In Peru, the construction of sewage pipe networks to transport the sewage out of the direct human environment is progressing. The safety and sustainability of these systems can be questioned, since in Peru the sewage seldom receive any treatment before being emitted to a recipient. This is taking place in Picota and sorrunding villages as well. In the last 25 years several systems implementing small-scale onsite treatment have been introduced throughout Latin America in an attempt to give more people access to sustainable and safe sanitary facilities, reducing water consumption and taking advantage of the agricultural values of the sewage fractions while protecting the environment from its negative impact. In this study three different sanitary systems and the effects of different population growths were compared.

Acid sulphate soils is a wide spread problem along the northern coast of Sweden. This is causing great damage through low pH and leaching of metals out into the streams. These soils are estimated to be found in several places in Sweden but also in many other areas in the world. One of these areas in Sweden that are believed to contain these sediments is Mälardalen. The purpose of this study is to evaluate the extension of the acid sulphate soils in this area.

The aim of the study has been to investigate physiotherapists? view on a new method of treatment in physiotherapy. In this case we have studied Whole Body Vibration training as an example of a new method of treatment. Semistructured interviews were performed with five physiotherapists. The study was carried out as a qualitative content analysis study.

Large amounts of phosphorus (P) are lost from the arable land due to water erosion. Both phosphorus attached to particles and dissolved phosphorus (mainly phosphate) are transported away with drainage-water and surface runoff. Good soil structure is important in minimizing these losses. In this study, soils from 50 fields were analysed with respect to aggregate stability as measured by dispersion of clay together with the content of total phosphorus (TotP), particulate phosphorus (PP) and phosphate phosphorus (PO4P) in the water phase. All soils were clay soils with clay content varying between 21 and 54%.

Most people have been forced to throw away a pot-plant after its death. There are many reasons to the death of a plant, but mainly it?s because its owner forgets it, and therefore fails to water it. The purpose of this project is therefore to develop a product which can prevent this from happening, while the product has to have a low manufacturing cost to be able to compete whit other, similar, products on the market. During the project, a benchmarking has been done to give a clear picture of what the product has to compete with. The directives there are for CE-marking, and which of these who concerns the product has also been looked up.

Overweight and obesity among children and adolescents is increasing. Diseases which earlier occurred exclusively among adults are now also observed among children. There is an urgent need for new treatments that can change this negative trend. The aim of this study was to describe existing treatments for obesity among children in the age of 6-12 and the effect of those treatments. This descriptive literature study is based on 17 research articles published between 2000 and 2007 from different parts in the world.

The aim of this essay is to examine which help a group of women with eating disorders had from thier treatment in daycare in 2004. The aim is to examine how the women have experienced this treatment and how they live today. The central questions are: what was their life situation like before the treatment, what was their experience of the treatment, how could the treatment have been better and how are their lives today? The method is based on qualitative interviews with seven women who were all in the same treatment for eight weeks at Capio AnorexiCenter in Malmö. The women have also redone tests that were done right before and right after the treatment.

In this study we have investigated how care users in a nursing home experience their possibilities for influence and treatment from the staff. The study was conducted through focus group interviews with six participants who we met on four occasions. Questions the study departs from are: How do users experience their opportunity to influence? How do the users experience the treatment from the staff? The study has a qualitative approach and has been analyzed by means of symbolic interactionism, with an emphasis on the Self. Our results demonstrate that in situations of good treatment there is also a good influence.