The aim of this study was to examine the current and historic mercury(Hg) load of the lake Storjuktan due to its recent exposure to a local potential source of Hg in form of the Sulphide mine Blaikengruvan(2006) and an earlier potential sources of Hg-load, the damming of the lake(1960s). Sediments were extracted using a HTH-sampler, freeze-dried, and analyzed for tot-Hg, LOI and activity of 210Pb and compared to samples extracted prior to the opening of the mine(2006). Constant initial concentration (CIC)-dating model was used for dating the samples. Low levels of Hg (100ng/g) were found throughout the lakes sediment. The highest levels of Hg(220ng/g) was detected at a depth of 4-5cm dating back to the mid 1970:s, suggesting that increased levels of atmospheric Hg rather than damming of the lake has caused the increase of Hg.

The purpose of this thesis is to examine the networks of interlocking directors in the 50 largestSwedish companies on the Stockholm Stock Exchange during the years 1990, 1995, 2000, 2005and 2010 and seek explanations for the observed developments.Our findings indicate that the density and concentration of the network has decreased during thefirst ten-year period and stayed constant during the second period. The development of theoverall network is not consistent throughout all corporate groups. Most notablyHandelsbankssfären seems to experience increased density and connectivity whileWallenbergsfären is experiencing the reverse.The changes during the first ten-year period is deemed to come mainly from changes inregulations pertaining to both the opening for international capital investments as well as looserrestrictions on domestic capital investments. These changes have caused decreased concentrationof ownership, as well as the emergence of new owners, which is reflected in the board ofdirectors.During the second ten-year period the changes are more pertaining to the individual boards andboard members, without flowing through into the overall network. Our findings indicate thatthese changes are caused by the increased professionalization of boards and board work, whichhas gained momentum through the creation of the Swedish Corporate Governance Code..

The recent development in several countries? legislation and best practice recommendations in relation to corporate governance in general and audit committees in particular have affected Swedish listed corporations in the form of the Swedish Corporate Governance Code and the coming EU-directive. This paper aims to discover what factors affected Swedish listed companies to form audit committees when this was entirely voluntary. We collected data from the annual reports of 121 Swedish listed companies and formed eleven hypotheses as to what factors we believed affected the voluntary formation of audit committees based on Agency Theory, economies of scale and circumstances specific to the Swedish environment. We then analyzed the data through the use of a multivariate logistic regression model.

Detta examensarbete har utforts i omradet skyddsventilation vidavdelningen for installationsteknik, Kungliga Tekniska Hogskolan.Examensarbetet omfattar 30 kurspoang och ar den avslutande delen icivilingenjorsutbildningen.Fragestallningar diskuteras om den inverkan kladsystem har for luftensrenhet i operationsrum under pagaende operation. Avsikten med arbetet aratt undersoka i vilken man operationsrumsklader av renrumskvalitetpaverkar halten av luftburna bakteriebarande partiklar under pagaendeoperation i jamforelse med konventionella kladsystem.Jag vill borja med att tacka mina handledare professor Bengt Ljungqvistoch tekn dr Berit Reinmuller, for att jag har fatt formanen att ta del av deraskunskaper samt att jag blivit utmarkt handledd och motiverad underexamensarbetets gang. Jag vill ocksa tacka professor Jan Gusten, Chalmersoch tekn lic Johan Nordenadler, Projektengagemang AB samt SahlgrenskaUniversistetssjukhuset, Berendsen Textil Service AB, Ramboll Sverige ABoch Miclev AB, vilka alla har gjort mitt examensarbete mojligt.Avslutningsvis vill jag tacka familj och vanner for uppmuntran underarbetets gang.Stockholm, januari 2010Jonas Hallberg Borgqvist3.

This paper presents the results of a study of dyscalculia. It is a retrospective archival study implemented with a deductive approach. On the basis of established research and theory 18 analytical categories were formulated, before a deductive thematic analysis of empirical material, consisting of journal data of 17 students investigated for dyscalculia, 14 girls (82.4%) and 3 boys (17.6%).The purpose of this study was to investigate the relationship between the concepts formulated in research on dyscalculia and actual mathematical difficulties as those found in practice of students at school.All pupils had early and long-term difficulties with mathematics, while not showing any difficulties in other subjects. Most have had an unsatisfactory learning environment. All had normal intelligence but difficulty with certain cognitive, self-regulatory and linguistic features.

Syftet med denna studie är att förklara och förstå hur lärare tänker kring med stort rörelsebehov i skolan och hur de tänker kring sitt agerande. Upplevs elevernas beteende som störande av lärarna? Vi har även försökt få förståelse om vad lärarna anser kan bidra till detta beteende hos eleverna, både i och utanför skolan. I första delen har vi tagit upp vad litteraturen säger om detta ämne och närliggande områden. I andra delen av vår bakgrund har vi behandlat lärarens roll, för att sedan lyfta fram betydelsen av skolmiljön.

In this essay, the aim is to empirically and theoretically study the parliamentary debate of the child pornography law. The empirical part is an attempt to discover eventual underlying gender stereotypes in the debate. A text analysis is conducted with material consisting of motions from members of parliament and of protocols from the parliamentary debate. In this material we try to find latent and manifest expressions of gender stereotypes. There are several stereotypes, which effects the argumentation and prejudice of the debate, like stereotypes of the victims, the perpetrators and their characteristics.

?Think of the best for the child? that?s a sentence we been hearing before, but the question is, do we really? Does the child get the opportunities to develop to healthy, safe, creative, mobile,concentrated, invention, curious, harmony child? Preschool outdoors is about time. On a preschool outdoors, gets the child opportunities to shape materials and the place they are on, the environment on preschool outdoors is formable and the children fantasy is big. Nothing is decided on a preschool outdoors ahead and nothing is static, here is the place where the child creates together with the nature and landscape. The landscape has a central part in the child?s play and in the child development and there are often no limits.

Om fysisk aktivitet påverkar lärandet och har många andra positiva effekter kan man undra om inte skolans idrottstimmar borde utökas. Syftet med litteraturstudien är att undersöka vad tillgänglig forskning säger när det gäller sambandet mellan fysisk aktivitet och lärande i skolan. Materialet till studien har sökts i relevanta databaser. För att ett vetenskapligt dokument skulle bli inkluderat i litteraturstudien skulle fokus ligga på och beröra fysisk aktivitet och lärande, alternativt fysisk aktivitet och kognitiv utveckling. Eftersom fokus ligger på fysisk aktivitet inom skolan har de även valt att beskriva hur idrottsundervisningen i skolan har utvecklats sedan införandet.

African swine fever, ASF, was first described 1921, in Kenya. The virus has thereafter spread through many African countries as well as in Europe, Asia, South- and Central America. The virus is spread via three different cycles, of which one is sylvatic and includes warthogs and soft ticks. The other two are between domestic pigs and the one most common one is caused by humans, who not always realize the seriousness of precautions. The infection manifests as hemorrhagic fever, but can also be more or less unnoticed. The aim of this study was to use molecular tools to detect and partly genetically characterize ASFV both in soft ticks and in serum from domestic pigs in Uganda. Comparing viruses detected in ticks with those detected in domestic pigs I also wanted to investigate possible links between the sylvatic and domestic cycle.

Research shows that there is a lack of knowledge of adult students with ADHD. Most of all research focuses on children with ADHD in school. The purpose of this study was to gain a better understanding of how adult learners with ADHD experience academic studies related to cognitive difficulties, emotion, motivation, and their experience of SOC. The questions tried to determine how any cognitive difficulties and emotions are perceived, how students' motivation to study impacted and their experience of SOC based on studies in higher education. To answer the purpose and questions used qualitative interviews based on three students with ADHD using a hermeneutic method.

ABSTRACTOur work deals with antisocial behavior among elementary school students between 7 and 16years in the school environment. The aim of our study was to examine how school personnelare experiencing antisocial behavior among students from a gender perspective. We were alsointerested to find out what the school's staff has of the experience of the differences andsimilarities between girls 'and boys' antisocial behavior. We used gender theory, when weanalyzed our individual responses to interview questions. We made six qualitative interviewswith low-and high school teachers, assistant principals, counselors and special educationteachers training in Kalmar County.

ABSTRACTOur work deals with antisocial behavior among elementary school students between 7 and 16years in the school environment. The aim of our study was to examine how school personnelare experiencing antisocial behavior among students from a gender perspective. We were alsointerested to find out what the school's staff has of the experience of the differences andsimilarities between girls 'and boys' antisocial behavior. We used gender theory, when weanalyzed our individual responses to interview questions. We made six qualitative interviewswith low-and high school teachers, assistant principals, counselors and special educationteachers training in Kalmar County.

The aim of this Masters thesis is to, from a users perspective, investigate which factors affect the library use for six persons with disabilities or visual handicaps. My method has been a case study and the methods applied are interviews and observation. As a theoretical framework I use Tom Wilsons theories and models about information behaviour and transform them to a model about library use. Answers are sought to the following questions: - What does the library use look like for six persons with disabilities or visually handicaps? - How do they experience the library in their own municipality? - Which factors affect the disabled persons library use and experience of the library? All interviewees showed a very positive attitude towards the library and the majority of them visited the library regularly or received audio books by mail.

Abstract This essay will present actual research around the concept of Post- Traumatic Stress Disorder, how it can reveal itself in school children and how it can influence young people?s learning ability and capacity to retain knowledge.The purpose is, above all, to clearly diagnose PTSD so that children with this complex of problems can receive good possibilities in learning and understanding.The question at hand is responded to by interviewees with an expertise on the subject and one ?story?, collectively with literary studies.The results illustrate that there can be neurological and biological, as well as social explanations for PTSD but it is seldom a permanent diagnosis. It is though something to take very seriously. PTSD can lead to severe psychobiological consequences, mostly by causing damage in one particular part of the brain, known as hippocampus. The hippocampus is essential in terms of memory and concentration.