Poly- and perfluoroalkyl substances (PFASs) are a group of environmental contaminants that have gained increasing attention due to their potential to bioaccumulate, environmental persistence and potential toxicity. PFASs have been found in surface water, sediment, air, soil, sludge and ice caps globally, as well as in wildlife and humans. Furthermore, PFASs have also been detected in drinking water, leading to raised concerns for human health, since drinking water is one of the most significant sources of PFASs for the general population. Conventional water treatment techniques have shown to be ineffective removing PFASs, highlighting the importance for further research to develop efficient removal techniques. The aim of this study was to investigate the removal efficiency of PFASs in water using two treatment techniques; granular activated carbon (GAC), type Filtrasorb 400®, and anion exchange (AE), type Purolite A-600. Additionally, the effect of dissolved organic carbon (DOC) on removal efficiency was studied.

This study was made as a part of a feasibility study on a polishing wetland at Rimbo wastewater plant (wwp) in Norrtälje municipality. The wwp had to decrease the nitrogen discharge to reach the limit 15 mg tot-N/l. The nitrogen in the outlet was mainly in the form of nitrate, hence the wetland mainly ought to support denitrification. The proposed area for the wetland was situated right next to the wwp and was already in the municipalitys posession. One aim of this study was to examine what spieces of plants needed to achieve highest possible denitrification.

In times of increased flooding, enhanced by climate change, polluted stormwater poses an increased threat to the environment through contaminated water entering waterways. Bioretention utilizes natural processes in soil and vegetation to treat pollutants and combat this threat. Biochar produced through pyrolysis, has a high cation exchange capacity (CEC) and could therefore increase treatment in bioretention systems. This research applies a literature review, interview, and a model to explore the benefits and disadvantages of biochar in order to specify a soil-mix through an understanding of the production process and preferred application rate. High purification through CEC, increased water holding capacity, and carbon sequestration being the benefits discussed.

Aquatic organisms are usually not exposed to single substances but rather to mixtures of toxicants in streams located in agricultural areas. The transport of pesticides used in the agricultural area in Sweden is monitored with continuous environmental supervision every year. During 2002-2008 an average of 10 pesticides were found in each sample and 40% of the samples contained substances with concentrations higher than the Water Quality Standards. Chemical risk management is normally based on single-test evaluations. A problem when assessing mixture toxicities is that the constituents and concentrations of pollutants in the environment vary greatly.

I detta projekt jobbar vi för att skapa ett program åt Infozone Sverige AB tillsammans med professionella utvecklare från företaget. Programmet är en webbportal som används till att övervaka och visa driftinformation om ett nätverk. Tanken är att denna portal skall integreras i ett ännu ej byggt system för nätverksövervakning som Infozone senare kan sälja till kund. Produkten tas fram med Scrum samt testdriven utveckling och under utvecklingen jobbar laget med bestämda metoder och SOLID-principerna för att säkerställa programmets kvalitet. Webbportalen utnyttjar moderna teknologier och ramverk för webbutveckling, bland annat är den en Single Page Application (SPA), använder följsam webbdesign och utnyttjar Microsofts .NET-plattform.

Bakgrund: Fall hos äldre är vanligt förekommande. Regelbunden balansträning krävs för att bibehålla och förbättra balansförmågan. En persons self-efficacy och utfallsförväntningar spelar roll för om träningen blir av eller inte då många äldre inte tränar på grund av att de inte tror sig få ut något av det. Nintendo Wii Fit är ett modernt sätt att träna balansförmågan på.Syfte: Syftet var att undersöka om Nintendo Wii Fit har effekt på balansförmågan, self-efficacy till balansförmågan i hemmet, utfallsförväntningar på balansförmågan av balansträningen samt fallrelaterad self-efficacy hos tre hemmaboende personer över 70 år under och efter tre veckor interventionsperiod.Metod: Experimentell single-case design A-B-A2 användes. Interventionen bestod av balansträning med Nintendo Wii Fit tre gånger i veckan under tre veckor.

Syfte: Syftet med denna studie är att undersöka om det finns ett samband mellan redovisad nedskrivning av goodwill och börsvärdet hos företag noterade vid London Stock Exchange mellan 2009 och 2012.Inledning: EU införde 2005 en ny standard för koncernredovisning. Syftet med den nya redovisningsstandarden, IFRS 3, är att öka relevansen, pålitligheten och jämförbarheten i den finansiella rapporteringen. Detta medförde bland annat att posten goodwill inte längre får skrivas av enligt plan, utan årligen ska testas för eventuell nedskrivning.Metod: För att fylla studiens syfte har vi använt oss av en kvantitativ undersökning, där relevant data har samlats in via marknadsdata och analysverktyget Bloomberg. Studien genomfördes på de största företagen registrerade på London Stock Exchange med undantag för de företag som inte hade den data som krävdes för att vara relevanta för studiens syfte. Svaren analyserades genom multipel regressionsanalys samt deskriptiv statistik framställda i statistikverktyget Minitab.Slutsats: Undersökningen visade att det finns ett statistiskt signifikant negativt samband mellan nedskrivning av goodwill och börsvärde.

In Sweden the most common type of road traffic accidents involving passenger cars are single accidents (where only one vehicle is involved). The aim of this thesis is to analyse how these accidents occur, and present recommendations on how to reduce the number of deaths. Data has been collected from the Swedish Transport Administration?s in-depth studies of fatal accidents. Road traffic accidents with fatal outcome that happened on public roads during the years 2007 to 2009 have been studied.

Aquatic organisms are usually not exposed to single substances but rather to mixtures of toxicants in streams located in agricultural areas. The transport of pesticides used in the agricultural area in Sweden is monitored with continuous environmental supervision every year. During 2002-2008 an average of 10 pesticides were found in each sample and 40% of the samples contained substances with concentrations higher than the Water Quality Standards. Chemical risk management is normally based on single-test evaluations. A problem when assessing mixture toxicities is that the constituents and concentrations of pollutants in the environment vary greatly.

Syftet med denna studie är att skapa en ökad förståelse för hur Kinas aktiemarknad ser ut, genom att i huvudsak analysera landets största börs Shanghai Stock Exchange. En analys av marknaden har gjorts där vi studerat asymmetrisk information på Kinas aktiemarknad och studerat ifall det påverkar marknadseffektiviteten..

The aim of this paper is to examine the actualities of Information Practicefor single women whose parentage has been made possible through assistedreproduction, which places these parents in a norm-breaking position.Study issues related to parents? perceptions of information needs areinvestigated, as is the process of information retrieval and library usageas well as the obstacles and opportunities facing parents in search ofinformation related to their own family constellation. To this end, theoriesby Tom Wilson, Reijo Savolainen and Elfreda A. Chatman have been usedas a model of selection. Empirical data have been gathered from interviewswith eight single women, whose parentage has been made possible throughartificial insemination or IVF with sperm from an open or anonymousdonor.

Aquatic organisms are usually not exposed to single substances but rather to mixtures of toxicants in streams located in agricultural areas. The transport of pesticides used in the agricultural area in Sweden is monitored with continuous environmental supervision every year. During 2002-2008 an average of 10 pesticides were found in each sample and 40% of the samples contained substances with concentrations higher than the Water Quality Standards. Chemical risk management is normally based on single-test evaluations. A problem when assessing mixture toxicities is that the constituents and concentrations of pollutants in the environment vary greatly.

Bakgrund: Inom forskningen studeras styrkeförhållandet i lårets muskler och anges ofta som flexor/extensor kvot (F/E-kvot). Ett sätt att mäta denna kvot är att använda isokinetiska styrketest.  Forskningen är inte överens om ett optimalt styrkeförhållande i denna muskulatur eller om för stor styrkeskillnad kan ge upphov till skada. Om en optimal kvot kan fastställas är det intressant i ett förebyggande och rehabiliterande syfte.  Syfte: Att beskriva och jämföra F/E-kvoten hos en grupp manliga fotbollsspelare med en grupp fysiskt aktiva män mellan 16 och 25 år. Metod: Mätning av maximal isokinetisk styrka i knäledens flexor och extensormuskler genomfördes med Genesis Single. Resultat: Studien fann en F/E-kvot hos fotbollsspelarna på 78,2 % på höger ben och 77 % på vänster ben.

The purpose of this Masters thesis is to examine the growth of the library in Vaggeryd. We have analysed how four factors influenced the library development during the years between 1862 and 1953. The four factors we have studied are development of society, collective actors, librarys economy and individual actors. We have worked with the following question: · How have the four factors: development of society, collective actors, librarys economy and individual actors, influenced the growth? We have focused on the changes that the industrialization brought on the society development, and on the growing of the non-governmental organisations.

The use of Power Line Communication, PLC, as a communication solution for Automated Meter Reading, AMR, is popular by utilities in Sweden and other parts of the world due to demands of accurate and fast meter reading. However the use of the electrical grid as a communication medium is complex and sometimes problematic. This report handles some of the issues and problems that are important to understand when using the grid as a communications medium. Focus is mainly on investigating high frequency distortion in the Kristianstad power grid own by C4energi caused by a frequency converter. Measurements on site are done to investigate signal damping in the grid, different configurations for the frequency converter and signal strength of the PLC-system.