Landfill leachate contains a variety of contaminants and is created when rainwater percolates the landfill. For landfill management the leachate is the main issue that can cause problems to the environment. At the landfill of Fläskebo, Renova AB treats the leachate in a local treatment plant. The treatment consists of a chemical treatment step with chemical precipitation, flocculation, sedimentation and filtration, and a final step with a carbon and peat filter. Renova has to ensure that the condition of the leachate reaches the regulation set for the landfill before it is released to the recipient.

Syftet var att studera matematikundervisningens utveckling genom att beskriva styrdokumentens, läroplanernas och kursplanernas påverkan på undervisningen. Bakgrunden till detta examensarbete är det faktum att många elever uppfattar skolmatematiken som komplicerad och ointressant och att de inte når de uppsatta målen. Metoden som användes var en litteraturgenomgång där matematikundervisningens utveckling studerades. Genom att även utföra en kvalitativ intervjuundersökning kunde fem yrkeserfarna pedagoger beskriva hur de uppfattar denna utveckling och hur det visar sig i deras matematikundervisning. Studien visar att i takt med att samhället utvecklas och förändras utvecklas också styrdokumenten.

The market for heavy duty engines is constantly requiring engines that should be more andmore powerful, while still maintaining low fuel consumption. As a result of increasing enginepower, the engine and coolant temperature increases as well due to insufficient coolingperformance (because of design issues, cost etc.).Also, emission legislations, both current and future, require more and more measures to betaken by engine manufacturers. One way of meeting the legislations is the use of cooled EGR(Exhaust Gas Recirculation), which also lead to increased coolant temperatures.Both these factors also naturally lead to increased engine oil temperatures, the consequencesof which are not thoroughly investigated.This thesis project aims to investigate effects of high temperatures on engine oil degradation,with focus on the greatest degradation process: oxidation. To do this several engine runs havebeen performed on a 310 hp engine with EGR to see what happens to the engine oil in a realengine when exposed to high temperatures. During the tests oil samples have been taken andanalysed for important parameters.As a complement to these engine tests some laboratory oxidation testing have also beenperformed, to be able to compare engine test data with laboratory tests.One goal of the project was to try to formulate an empirical oxidation model, which would beable to predict oil oxidation levels in an engine, given any running parameters.

The basic principle of the integrated school according to the Salamanca Declaration is that all children, whenever possible, should be taught together, regardless of any difficulties or diversity. It has been shown that students with neuropsychiatric disorders are having much more difficulties to achieve the targets than the average student. Pupils with neuropsychiatric syndrome will always be present in school and we who are working in the business must be better at learning to adapt to them so that they too can achieve proficiency in school.Mathematics is perhaps the topic that Swedish students generally have most problems with,and it will not obviously be easier if you have some form of neuropsychiatric disability.In our future role as special education teachers, we will mentor and support other teachers in the complex educational environment that exists today. The aim that has been built up is thus partly to explore how mathematics teachers work with included students with neuropsychiatric disorders, as well as how teachers wishing to become supervised by specialeducation teachers in mathematics. The study is conducted from a sociocultural perspective.A sociocultural perspective on learning means that all people are learning all the time in social settings.

The purpose with this study is to gain understanding about student´s view of mathematical education, in the later years of nine-year compulsory school, and the motivation factors that can be identified when student´s gives opportunity to express their own thoughts due to the mathematical education. From experiences we have gained during the practical part of our teachers education we got the impression that student´s think that the mathematical education is boring and uninteresting. Through qualitative methods such as survey and discussions in focus group we have analyzed student´s views of mathematical education and pointed out witch motivation factors that are expressed when student´s gives opportunity to influence over their own education. The results are shown from the answers and comments that student´s gave, during the survey and focus group, and is divided into two main parts, both with focus on motivation ?Mathematics and motivation? and ?Student´s influence and motivation? and also a summery part ?Motivated for mathematical education when the student is given influence over the education?. The study showed that student´s wants to have more difference in the work methods that are used in their mathematical education such as problem solving, games, more work in groups and pairs and more use of IT. In conclusion the study also gives suggestions to other studies that can be made in the same genre as this study in the way that IT can be used in mathematical education and how student´s interest can be used in the education to gain more motivated student´s..

This thesis examines some special education teachers with experiences of childrendiagnosed with dyscalculia. Problems with mathematics at school may occur to allchildren in all schools. It is therefore important that the teacher knows the variousdisabilities that teachers may encounter. The study is based on four randomlyselected special education teachers, all-working at schools that are related to amedium-sized Swedish town. This work will immerse in the knowledge ofdyscalculia among four special education teachers.The interviews revealed that all special education teachers felt that dyscalculiainvolves specific difficulties in mathematics, their views on dyscalculia is consistentwith current research.

Verifiering med hjälp av dator av två oberoende formler för beräkning av antalet lösningar för linjära kongruenssystem med två eller tre obekanta..

Syftet med examensarbetet var att undersöka hur den språkliga dräkten imatematiska textuppgifter inverkar på elevernas förmåga att lösa uppgiften.Fokus i undersökningen har lagts på elever i matematiksvårigheter. Utifrån teorier om olika svårigheter som språkets utformning kan ge inommatematik och svenska, fokuserades i den följande undersökningen påkategorierna signalord, kontextualisering och förstärkning av bild. Sex uppgiftervaldes ut från läromedel för att omformuleras i ytterligare två varianter vardera.Undersökningen inleddes som en kvantitativ undersökning i årskurs fyra däreleverna fick lösa sex uppgifter. Utifrån resultatet valdes elever ut förkvalitativa intervjuer om textformuleringar. De intervjuade eleverna ingick i dendefinierade målgruppen. Resultatet visar att eleverna har lättare att hitta svar när det finns ett signalord iuppgiften. De reagerar olika inför lösandet av en textuppgift, en del kännertilltro medan andra konstaterar att uppgiften inte går att lösa.

To study and laborate at distance, its necessary that the coursematerial is accessible via internet. Teaching at more languages than swedish bocomes more common, why the information of courses needs to exist at several languages. As teacher, you need a way to publish and edit material of a course. It also has to be easy for the students to find the information. The distance laboratory have developed an administrative websystem that handles programme, courses and students, but misses the possibility for teachers to change content at the webpages and publish new coursematerial on a way..

People live longer. There is a growing need to increase the knowledge of aging and of the need among the elderly for medical care in the near future. As a step towards meeting this need, a survey among the elderly in Skåne is made by the division of Geriatric Medicine in Malmö University Hospital. This survey is called Gott åldrande i Skåne, GÅS. A frequent decease among the elderly is Mild Cognitive Impairment (MCI).

Diabetes mellitus is characterised by persistent hyperglycemia in all species. Fructosamine is a glycated protein reflecting blood glucose concentration during the preceding weeks. It has become a valuable analysis to differentiate persistent hyperglycemia from transient stress induced hyperglycemia in cats. It is also used to evaluate current therapy in diabetic patients. Although fructosamine is a well accepted analysis, it is sometimes regarded with scepticism.

Research has shown positive correlations between global self-esteem and physical activity, as well as between global self-esteem and school performance. However, research is ambiguous and other variables have shown importance for global self-esteem. This study aims to investigate the correlations between global self-esteem and physical activities, school performance and social participations within high-school students in the northern part of Sweden. The study also investigates gender differences regarding correlations between the variables. The study was conducted using a questionnaire that included Rosenberg Self-Esteem Scale and self-rated physical activity, social participation and grades in Swedish, English and mathematics.

Domestic science is an interdisciplinary subject. Furthermore domestic science is a combination of theory and practice. The basic competence, a recommendation from ?The Swedish School Institution? (Skolverket), is to enter the secondary school with minimum grade G, (godkänd) in the basic themes: Swedish, English and Mathematic. Today there are many pupils finishing their secondary school without grade in one or more basic themes; Swedish, English and Mathematic.

The aim of this thesis is to ascertain how primary school teachers would like to improve their mathematics teaching. The central questions for this research are:In what ways do teachers want to improve their mathematics teaching?How do the teachers justify their statements?What main features can be distinguished out of the teachers answers?Three interviews and seven surveys have been used to collect information from a total of nine teachers, at one primary school. Teaching pupils from preschool to sixth grade. The results have been analysed, interpreted and discussed using a drama pedagogical perspective, inspired by a holistic approach to learning.

Within agriculture it is important to optimize the use of nitrogen, not only from an economic point of view but also to minimize damage to the environment. This can sometimes be difficult, especially within organic farming. Organic farmers are using increasing amounts of waste products from the food industry to cover their nitrogen needs. These different organic fertilizers release nitrogen at different rates and under specific soil conditions. Because of this, it would be beneficial to have a standardized method to measure the amount and rate of nitrogen mineralization from organic fertilizers. This project contributes to this knowledge by investigating whether relatively simple and repeatable laboratory methods can be used to estimate the nitrogen fertilizer value of organic fertilizers.