5-hydroxytryptamin (5-HT) is biochemically derived from Tryptophan. Kynurenic acid and quinolinic acid are also known metabolites of tryptophan. 5-HT is considered to play a role in depression and today selective serotonin reuptake inhibitors (SSRIs) are used for treatment of depression. 5-HT may also play a role in pain perception. The aim of this study was to investigate whether a supplement of tryptophan may affect conditions such as depression and/or pain.

In 1998 Sweden accepted the Treaty of Amsterdam which contained a development of the common foreign and security policy (CFSP) towards a European security and defense policy (ESDP). This thesis aims at studying the decision making process behind the Swedish foreign policy decision to further develop its security policy within the European Union. The purpose is to explain which factors and conditions that did affect and influence the Swedish foreign policy decision. The research applies foreign policy analysis, a theoretical perspective that analyzes both domestic and international conditions using different levels of analysis. The research methods being used has been qualitative as well as quantitative, complemented by interviews, since the research is a process tracing case study.The thesis conclusion is that the Swedish decision is explained by several factors.

Repetition of Non- word (make- up word that has not some semantic content) has been proposed as a reliable index of phonological memory in children with language impairment (LI). The aim of this study was to find out the possible similarities and differences concerning phonotactic non-words and working memory in 18 bilingual Swedish-Arabic children with and without LI ages 4-6 years. The investigation was undertaken by conducting three tests including NEPSY, WPPSI-III and a Word repetition test. The results showed that there are not significant differences between the two groups regarding various parts of NEPSY. On the other hand the results showed two significant differences in WPPSI-III regarding Picture categories and Word repetition tests for Swedish Non-word.

The aim of this study was to investigate the possibility of performing inter-species embryo transfer under actual field conditions in the natural habitat of South American camelids. In this study embryos from llamas were transferred to alpaca recipients. In a parallel study alpaca embryos were transferred to llama recipients. All animals used were free of uterine and ovarian abnormalities detectable by rectal palpation and /or ultrasound examination. Embryos were harvested twice after single ovulation in 10 mated female llamas and non-surgically transferred to synchronized alpaca recipients.

Today we live in a world where the demands increase in the aeronautics industry. This creates a situation where no mistakes are allowed about the regulations and for those who are supposed to follow these. Safety comes first, tracking of components, Service Bulletins which are recommendations from the manufactures and Airworthiness Directives which are demands from the authorities, these need to be updated at all time and everything that is done on a aircraft need to be documented.This creates a situation where today maintenance shops need to have full control of all parts of the organization, which creates a need for a working data system.The goal with this exam work is to evaluate the best way to implicate the new bought data system called "System Aircraft Management" on the basis of the needs of Täby Air Maintenance AB. The system are supposed to get started technically and also be implicated to the users of the system. This work will be focused to create a effective working plan to get SAM implicated with no interruption in the daily work.

This study was focused to highlight the problems that comes with being a minority on a workplace, in this case female sports journalist who are working in a male dominated sports field. The objective was to find out how the female sports journalist was experiencing working in such a domain, with focus on journalists who works on local news papers. The study also wanted to look on how these workplaces incorporated gender in their daily work.       In combination with gender theory, with concepts as masculine hegemony and power structures, I also choose to apply the american researcher Rosabeth M Kanters concept ?token?. With these aspects in mind I analyzed the five interviews that I carried out with female sports journalist with a qualitative data analysis.           The results of the study showed that the female sports journalist in some aspects were aware of the difficulties of being a woman in a male dominated area ? when they were talking about the profession at large.

The development in photogrammetry has created possibilities for new methods in aerial images acquisition. Remotely-controlled imaging from an unmanned helium zeppelin is a new and relatively unexplored acquisition. The purpose with this degree project is to evaluate the accuracy of this kind of low-height photographing system, a task given from the consultant company WSP, in Sweden. Landbadet in Uddevalla municipality was chosen as a test field for the zeppelin. Seventeen images distributed over three strips were acquired from the flying height of 80 m.

The combustion engines in today?s vehicles are getting more and more advanced and there are increasing demands on that the engines should operate during optimal conditions. Examples of internal combustion engine parameters which may be carefully controlled are the rate between fuel and air, that this gas mixture is homogenous enough and that it is ignited at the correct moment. Moreover, the requirements of these parameters vary depending on, among other, engine speed and load. To meet these requirements in all occurring operation conditions, it is required that many subsystems work together.

This study aimed to explore the perceived role and mandate of civil servants employed in municipalities in Kronoberg county. The study aimed to answer the question whether civil servants engaged in municipal economics have different perspectives on their mandate and role based on how said civil servants implement and manage policy tools available in Swedish municipalities. The study aimed to through policy tools theory explain how civil servants through four categories view the policy tools employed in the municipality. The study is based on the reasoning that policy tools influences exercise of authority that in turn influences view on policy tools. In order to study civil servants perspective on perceived mandate and role interviews were conducted with a sample of civil servants from each of the eight municipalities in Kronoberg county.

Japan is the first industrialized country that is experiencing the threat of a rapidly declining and aging population. This has shifted the focus and the limelight is now on the matter that for a long time has been ignored. That is, the Japanese women?s situation in the society. This thesis seeks to point out the relevance of gender in the construction of leadership in order to get a deeper understanding of the Japanese women?s situation today.

Biogas is an expanding sector within the broad field of agriculture and animal production. Small-scale biogas offers local combined power and heating production and the substrate is transformed into high-quality biological fertilizer. This bachelor thesis focuses on a pig farm in south-western Sweden, where biogas is produced from pig manure, evaluates and suggests ways of optimizing the process and investigates whether investing in an upgrading plant would be a feasible and more cost-efficient option. The results show that the biogas plant is working well, although the production differs from the original plans. This shows in turn that planning and examining the basic conditions before making the investment is of great importance, as well as monitoring and keeping detailed statistics of the running process.

The purpose has been to investigate leisure-time centers actual work on children with attention deficit disorder. In addition, the study strives to make leisure-time centers way of working, in relation to their assignments, visible. The study has also compared how the leisure-time centers work and what the research says. The survey was conducted with the help of three exploratory interviews with pedagogues and three-piece observations at the leisure-time centers. It was carried out at three different schools in two counties in Sweden.The results of the survey show that the schools are trying to create clear procedures, though the centers succeed with this in varied degrees.

Injuries and sick-leave is a common feature for reinforcement workers today. This is mainlydue to the fact that reinforcement work is done in an exposed environment with many stressfactors and highly repetitive work. These operations are often carried out in unsuitableworking positions, these positions creates a major burden on the bones and joints and causesmicro- damages on muscles. With repetitive work these injuries are not given time to healproperly and will gradually become worse.The body will not be able to handle the stress of working in a work environment such as thisand musculoskeletal disorders can be a result of this. The injury will make itself known aspain in the musculoskeletal system and causes reduced movability; the injured worker willtherefore not be able to perform the same work tasks as before.

The purpose of this thesis is to look into the knowledge city concept and the preferences and requirements of companies on such a city. Furthermore, suggestions of ideal conditions in a knowledge city are proposed. The thesis has been conducted through a qualitative approach where a deductive procedure has been implemented. In order to examine knowledge cities, Barcelona has sketchily been looked at as an early example of a knowledge city, whereas a more exhaustive observation of Copenhagen was conducted. Since the concept of knowledge cities is a rather new phenomenon, models from several disciplines constitute the theoretical framework.

The aim of this study was to investigate how school counselors experienced collaboration with social services and whether they felt they have the ability to improve upon this collaboration. The empirical data consists of qualitative interviews with eight school counselors from public schools, ages 13 to 15, in eight separate municipalities in the Stockholm area. The main results showed that the school counselors recognized the positive benefits from collaboration, but that they in practice experienced difficulties turning this into a high-quality collaboration. The school counselors experienced that due to uncertain expectations in the collaboration it led to unclear distribution of areas of responsibilities. The school counselors expressed small or no possibilities for them to improve upon collaboration but pointed out that higher commitment and a positive attitude are valuable attributes to improving collaboration.