Transformation of inorganic mercury (Hg) to methyl mercury (MeHg) is a biotic process that is proposed to be conducted primarily by sulphate reducing bacteria (SRB). The formation of MeHg is of great interest because it is the mercury species that biomagnifies to the greatest extent in the aquatic food webs; about 90 % of all Hg in fish is MeHg. Our understanding of factors involved in the production of MeHg is very important for making a reliable risk assessment. The purposes of this study were to investigate the different factors that control the solubility of Hg and the production of MeHg in a contaminated lake sediment. The lake Ala-Lombolo, Kiruna municipality, is well-known to be contaminated by mercury from different sources. Sediment cores were sampled at three different locations (N, SW and SE) in the lake and divided in three different layers; 0-5, 5-10 and 10-15 cm.

This report describes the development of a sample loader for my diploma work at Q-linea AB in Uppsala. The sample loader will replace the process of loading fluid samples into Q-linea?s instrument for biomolecule analysis. The earlier process was done by hand and was a time consuming and inefficient task.The work was initiated with a design phase where an overview of the system was created. The sample loader will be receiving text commands from a PC that coordinates all the subsystems like pumps and lasers on the analysis instrument.

The purpose of this paper is to investigate possible reasons Sweden might have had to motivate the start and end of its nuclear program during the Cold war. This investigation will be conducted using a qualitative research method and making a comparison between the theories realism and liberalism?s ability to explain the decisions. The question this paper is based upon is as follows: Can Sweden?s creating and shutting down of a nuclear weapons program during the Cold war be explained by the international events and actions that were taking place during this time period? The result consists of liberalism pointing out several failures on the international level that might explain the cynical decision from Sweden to create the nuclear weapons. Realism considers the decision to make perfect sense at this point in time, to protect Sweden on the anarchy that was going on at that time according to this theory.The ending of the nuclear weapons program is being explained largely by the rise of the MAD-concept which renders the acute need of nuclear weapons in Sweden void.  Liberalism on the other hand considers this a logic step due to the better established UN that is playing a larger role now than in the 1940s. In conclusion, realism does a better job explaining the start of the nuclear weapons program, while liberalism explains the end of it more efficiently. The contribution this thesis has to the research of political science can be seen mainly in three areas.

Bakgrund: Sjuksköterskeutbildningen är treårig. I den ingår teoretisk och verksamhetsförlagd utbildning inom psykiatrisk vård. Studenter behöver förberedas med att träna för att få förmågan att möta och hantera patienter med psykisk ohälsa. Syfte: Syftet med studien var att undersöka hur sjuksköterskestudenter uppfattar akuta omhändertaganden av patienter på psykiatriska akuta vårdavdelningar. Metod: En kvalitativ induktiv metod valdes.

Bakgrund: Antalet barn och ungdomar som deltar i organiserade idrotts- och fritidsaktiviteter ökar. Det ses också en ökning av intensiv träning i yngre åldrar. Detta kan leda till att barn och ungdomar utsätter sig själva för ökad risk för akuta skador och överbelastningsskador. Syfte: Att applicera och anpassa Oslo Sports Trauma Research Center (OSTRC) svenska enkät till ett pojklag inom juniorishockey under en fyraveckorsperiod samt att genomföra en skaderegistrering mot de fysiska hälsoproblemen (akut skada, överbelastningsskada och sjukdom) och belysa dessa inom juniorishockey. Material och metod: Samtliga spelarna i ett pojklag (ålder 15-18) i ishockey fick under fyra veckors tid fylla i OSTRC enkät en gång i veckan.

Certification systems, that assess companies? work with social and environmental issues, have emerged in an increasing number of industries. Today, there are environmental certifications for the food industry, the forestry, the fisheries sector and several more. In apparel industry, certification for sustainable working conditions has been of major impact. The property sector is no exception from other industries.

Amyotrophic lateral sclerosis is one of the major neurodegenerative diseases, causing an ascending paralysis that usually kills the patient within a few years from disease onset. The motor neurons show aggregates of proteins which in approximately 20 % of cases of the familial form contain mutated SOD1 protein. Trehalose is a disaccharide which has been shown to reduce protein aggregation and increase viability in cell models and alleviate symptoms in animal models of several neurodegenerative diseases associated with protein aggregation. When given orally to the SOD1G93A mouse model of ALS, trehalose failed to slow down the disease progression, which has led to questions about the uptake and distribution of the molecule in this mouse strain. The aim of this study was to investigate whether significant levels of trehalose reach the central nervous system of the SOD1G93A mouse after oral administration. This was performed by a trehalose assay of the brain of trehalose treated animals. A glucose assay was optimised for use in small samples of brain lysate after the digestion of trehalose into glucose by trehalase, and the difference in glucose concentration before and after digestion represented the trehalose level.

Background: High demands are today placed upon Swedish elderly care nurses as more elderly live with multimorbidity while the hospital bed capacity is becoming lower. Aim: The aim of the study was to explore nurses? perception of decision-making in situations with acutely ill patients in nursing homes and which factors may influence the decision about transferring patients to the emergency department or not. Method: This is a qualitative study with a phenomenographic approach. Semi-structured interviews have been conducted with 11 nurses working in nursing homes. The data analysis was based on Dahlgren and Fallsberg (1991) data analysis. Result: Three different description categories were presented, which describes variations of the nurses? perceptions.Feeling comfortable in making the decision; which involved the nurses feeling confident in the decision-making about transferring patients to the emergency department or not.Hesitant in making the decision; which described how nurses perceived the decision-making as problematic, with regard to transferring patients to the emergency department.Many wishes to consider in taking the decision; which explained how nurses? decision-making was influenced by requests from the patients or from people close to them.Conclusion:  The study reflected how  supporting and aggravating factors could influence how nurses in nursing homes perceived the decision-making and how nurses have to take in consideration different opinions concerning the decision making process of transferring patients to the emergency department or not.

The progress of the health among the elderly has a major meaning for the needs of care, nursing and social services. The health of the elderly has improved but fall and fall accidents are a major problem. Acute diseases, activities and environment risks are often related to fall accidents. The aim of the study was to describe health care staffs? opinions about fall risk and fall prevention.

The aim of the study was to examine individual staff experience and management of threats and violence in the acute psychiatric department for children and teenagers in Uppsala. Previous research shows that the experience of threats and/or violence is individual, and that it is difficult to distinguish between these concepts. Research shows that it is particularly vulnerable to work in psychiatry when mental illness is a cause when threats and violence occurs. Threats and violence can result in different consequences for the individual. The study is based on qualitative interviews and the material was collected in the autumn of 2012 at Akademiska sjukhuset.

Test bench for air bearingsThis thesis work consisted of bringing forward and defining the test parameters relevant for a test bench and constructing a test bench that can test and verify the largest existing air bearings that are of use in Micronic Laser Systems AB machines. Because the knowledge about air bearings is limited it is thought that with the help of the test bench the knowledge would increase and in that way improve the air bearings.After learning more about air bearings and their purpose at Micronic Laser Systems AB, I started the concept phase for the test bench. For each part in the test bench I consulted my two tutors, Torbjörn Hedevärn and Johan Bergqvist, at Micronic Laser Systems AB. The final concepts where documented as 3D-modells in Solidworks and some of them have been tested in Solidworks FEM-program.The test bench is designed so that, with the help of a pneumatic cylinder, 25 kilo weights are placed on the air bearing to test its stiffness, damping and the pressure performance under its surface area. To test these parameters the test bench has to have a pressure meter, accelerometer and a microcator.

 Extra high requirements are made on all systems in health care that they are functional and usable,´something, however, that is not always the case. At Emergency Admissions at Sahlgrenska University´Hospital many systems are in use at the same time and it happens that much overhead is caused by having to fill in the same information in different places. In addition, data that is gathered is to a large extent saved in free text format, which means that it cannot be used in a larger context such as research, quality control or for decision support. Data is saved in the patient file only for the treatment process of the individual patient.A data collecting system with decision support functionality could be a first step towards reducing Emergency Admissions? costs and patients? waiting times by providing a structured method of data collection.

The development of IT systems is usually accomplished by some form of system development methodology. It can be performed as the waterfall method, where each phase is completed before the next begins. One of the reasons to follow a development methodology is that the process is more structured, faster and that the product will have higher quality. One risk of not using a system development approach is that the code can be unstructured and difficult to maintain.This paper describes an alternative method in which the development occurred without the use of any system development methodology. This has been possible because there was a clear goal of the program that should be developed.

Dressage schooling is not a subject that rests on science, it is a matter of dependable experience. So far there hasn?t been so much research about it, but more and more is done. Especially the interaction between rider and horse is a nearly uninvestigated field. Riding skills is much about having the right position, and having the horses head and neck in different positions, but there are no research done that support or deny that this old ?knowledge? is for the best for the horse. This study was performed to evaluate if the head and neck position of the horse, and the velocity, has any influence on the position of the rider.

The purpose of this work was to investigate and provide understanding regarding how AI can be used to make organizations more efficient, where risk management is also discussed. The basic model for the study is the Resource-based view, which is about making use of one's resources which are described through many different perspectives. The method used for this study was a qualitative analysis, which was applied through interviews with several people with high positions within companies and relevant skills, based on insight and experiential knowledge.These people work in different industries, therefore a large part of the work was intended to carry out a comparative analysis between a line of different businesses. The results showed that AI is in a developing phase, and based on the respective industry, it has developed in different ways. Finally, it turned out that AI can make businesses more efficient by, among other things, managing data and automating various work processes faster compared to humans.