Toxic metals contaminate soil worldwide and thus serve as sever environmental threat. Therefore the purposes of this study were to investigate in which soil fractions that different heavy metals (Fe, As, Cu, Zn and Pb) could be found in contaminated soils and if it is possible to use sieving as a method for decontamination. Soil samples were collected from three different locations, the Nasa silver mine, the Blaiken-mine and Svalget environmental station. The samples were oven dried and later on sieved into six different fractions 8mm, 4 mm, 0.5 mm, 0.250mm, 0.063 mm and <0.063 mm. The fractions 4 mm, 0.5 mm and <0.063 mm from each location were analyzed in an x-ray fluorescence detector.

Active ownership is widely regarded as positive for the development and performance of businesses. In this paper, we investigate the impact of ownership concentration and owner identity on return on equity (ROE) in Swedish companies between 1986 and 2008, and show that active ownership might suffer from opposing effects. We find evidence, albeit weak, that ownership concentration has a positive effect on profitability, but that it levels off at high levels of ownership shares. Furthermore, we propose that family ownership has a negative effect on profitability. Our results are dependent of choice of statistical method, but show nonetheless a need to reevaluate what seems to be a universally positive view of active ownership..

AbstractThe purpose with this essay is to get an insight on how the school has changed over the past years in terms of reading- and writing difficulties/dyslexia. In the literature studies I mention reading- and writing difficulties and the reasons why some people get these problems. Further on in the literature study it is written about what the education act and the curriculum say about the school?s duties towards pupils in need of special support.The result contains interviews with one language pedagogue and one special pedagogue who work in two different municipalities. In addition I interviewed two former pupils who went to school 15-20 years ago.I came to the conclusion that today?s schools have changed to the better for the pupils with difficulties.

The aim of this study was to investigate which factors teachers and special needs education teachers view as being the main causes of mathematical learning difficulties and from these choose how to educate pupils with these difficulties. The aim was also to investigate how this education is organised at two different schools. An interview based investigation addressed these objectives by using three comprehensive questions:Which factors do the teachers and special needs teachers view as being the main reasons for mathematical learning difficulties?How do teachers and special needs teachers educate pupils with mathematical learning difficulties?How is the education organised for pupils with mathematical learning difficulties at two different schools?This study is based on four interviews of three teachers and one special needs teacher. The people interviewed work at two different primary schools in the same local authority.

It is not uncommon for math difficulties and reading difficulties to occur simultaneously. Despite this, math and reading difficulties are thought to have different cognitive profiles where math difficulties are linked to number sense; an innate ability to understand, approximate and manipulate both quantities and numerical information, whereas reading difficulties are linked to phonological ability; an innate ability to understand, create representations of and manipulate phonological information. A possible link between the difficulties is that phonological abilities also could affect mathematical ability. Support for this comes from studies where comorbid math and reading difficulties are associated with more severe difficulties in arithmetic ability compared to those with isolated math difficulties. The purpose of this study is to examine whether isolated math difficulties, isolated reading difficulties and comorbid math and reading difficulties can be linked to deficits in number sense, phonological ability or both of these, and whether comorbid math and reading difficulties differ in performance in mathematical tasks compared to isolated math difficulties for children in second grade.

One key factor in silviculture today is sustainability. In order to achieve sustainability it may be important to restore lost nutrients to the forest after clearcutting. In order to calculate the removal, you need to know how much of different elements you will find in different tree compartments. The aim of this study was to investigate if the concentration of elements in different tree compartments of spruce (Picea abies (L.) Karst) were related to the moisture conditions of the site. Five plots at Risfallet (60º 21´ N, 16º 13´ E), was placed along a moisture gradient in a 40- year spruce stand.

This is an essay concerning the density of the city. An increasing amount of today?s cities have a shortage of space available for the erection of new buildings and settlements, especially in areas close to the city-centre. New buildings and settlements are therefore often found in the outskirts of the city, resulting in long distances between work and living for many people. These long distances are a waste of limited resources and are inconsistent with the vision of the sustainable city.The challenge for the future is to insert new buildings and settlements in the existing city-structure and in this way reduce the distances between different city-functions.The density of the city can be increased in two different ways; by inserting new buildings between existing ones or by extension existing buildings, for example by an additional floor.

A system for sampling of alcohol and aldehyde from diluted exhaust gases from vehicles powered by ethanol has been developed and tested. The major part of the work has been research of earlier work in the field and the construction of the sampling system.The part of the system constructed for the measurement of alcohol has been shown to work, however, more test should be performed. The part of the system constructed for the measurement of aldehyde was tested parallel to a commercially available system, based on the same principle of measurement, and has been shown to work well.Determination of the concentration of gaseous ethanol using a FID has shown the since earlier known fact that a FID is not able to measure a correct concentration of ethanol. Furthermore it has been shown that high concentrations of gaseous ethanol can not be kept in a bag more than a few minutes without a substantial decrease of the measured concentration..

AbstractThe purpose with my study was to find out how students with physical difficulties are treated in school by teachers and other students and also if there are any differences between how teachers and students treat students with physical difficulties. I also wanted to see if there were any prejudices against students with physical disabilities from either students or teachers. If there are any prejudices, I wanted to know what kind it is that exists. When I went to school, I remember that I looked down on the students with physical difficulties because they were different. When I have been working in school as a teacher, I have seen students who pull away from students with difficulties.I chose to do the study at a higher grade school, because I have not been in such a high grade in school during my practice.

The purpose of this study was to examine what students themselves think about using computers in school. The study was conducted in a school in central Sweden. The students in focus were students with reading and writing difficulties, dyslexia or language difficulties such as an other native language. A total of eight students were interviewed. The interviews were analyzed using thematic analysis.

It is not uncommon for math difficulties and reading difficulties to occur simultaneously. Despite this, math and reading difficulties are thought to have different cognitive profiles where math difficulties are linked to number sense; an innate ability to understand, approximate and manipulate both quantities and numerical information, whereas reading difficulties are linked to phonological ability; an innate ability to understand, create representations of and manipulate phonological information. A possible link between the difficulties is that phonological abilities also could affect mathematical ability. Support for this comes from studies where comorbid math and reading difficulties are associated with more severe difficulties in arithmetic ability compared to those with isolated math difficulties. The purpose of this study is to examine whether isolated math difficulties, isolated reading difficulties and comorbid math and reading difficulties can be linked to deficits in number sense, phonological ability or both of these, and whether comorbid math and reading difficulties differ in performance in mathematical tasks compared to isolated math difficulties for children in second grade.

The purpose of this investigation was to investigate how being outdoors and participating in physical activities affect the concentration in a collection situation among children.The methods I chose were observation of two groups of children two times each and interviews with four educators.The results showed that the concentration in the collected situation depends on past activity, where it has taken place and that the environment has an impact. If the previous activity been more active and physical the subsequent collected situation is calmer and the children more concentrate. The facts that the children have been outside in an inspiring environment that encourage playing and movement also have a position impact on the child´s ability to concentrate. The collected situation is an important moment in the preschool day when the kids need to congregate and get a chance for social interaction and a sense of togetherness with all the children and teachers. The conclusion is that there is a relationship between movement, physical activity and an increased concentration.

????The aim is to examine how written production differs between students with and without difficulties in writing. The study also examine how different difficulties within writing interplay. It is based on analysis of ten-year old student texts with 30 texts from both an experimental and a control group. Texts were written in 1991.Both spelling, technique of writing and syntactic complexity differ between the groups.

Most studies on parenthood and learning difficulties focus on mother and child, and very little is know about fathers with learning difficulties. Moreover, people with learning difficulties are rarely asked to tell their own narratives. The aim of the current study is to identify the role of the father in families where one or both of the parents have learning difficulties. Laws and regulations concerning the rights of people with learning difficulties in Sweden are accounted for and the he social support system for all parents in Sweden are described .The empirical study is a qualitative phenomenological interview study, inspired by narrative traditions, and describes how fathers with learning difficulties experience these support systems. The main data are two life stories of fathers with learning difficulties and one observation in a family.The findings suggest that although Sweden has a highly regarded disability policy and social support system, and even though fathers with learning difficulties are assured equal rights as members of the society and as parents by the Act of Human Rights, they are not treated equal but still faces structural inequalities.

Most pupils learn good reading strategies during their first years at school. Pupils who don´t do that will have difficulties understanding written data. As the pupils meet text filled with lots of data they will have difficulties understanding the written text. International studies show that the rusults of Swedish pupils are dropping. This issue got me thinking: What help is given to those pupils with difficulties so that their reading comprehension will increase? Are the teachers actively teaching reading comprehensions and in that case how and when? By observing two teahers of intermediate level, I wanted to find out how theachers help pupils with reading comprehension.