Huvudsyftet är att undersöka om det existerar väsentliga variabler som kan hjälpa oss att finna framtida vinnarfonder genom att studera historisk information. Studien mäts i förhållande till det existerande utbudet på svenska fondmarknaden. Konkret vill vi kunna få en högre signifikant avkastning under en given period än den genomsnittliga avkastningen för samtliga fonder på den svenska marknaden. Med denna undersökning vill vi bidra till en diskussion om det råder marknadseffektivitet. Variabler som vi studerar för denna undersökning är historisk avkastning, standardavvikelse, Sharpekvot, Stutzer index, fondstorlek, kapitalflöde, relativ volym, trading activity, fondavgifter och slutligen ålder.

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.

Timber floating operations in Scandinavia during the 19th and 20th centuries has contributed to severe negative impacts on riverine ecosystems. Increase in water velocity and lack of stream bed heterogeneity as a result of stream channelization lead to increased bed load transport. Since availability and recruitment of new suitable spawning substrate in Scandinavian watercourses is sparse, spawning habitats for salmonids has become a scarce commodity. Lately, increasingly more attention has been given to the recreation and improvement of brown trout (Salmo trutta) spawning habitats in restoration projects. While much of the research on spawning habitat has been focused on evaluation of the influence that the constructed spawning grounds have on fish populations, few studies have been conducted to evaluate the Persistence of these constructions over time. I evaluate erosion of constructed spawning beds as an effect of sediment transport attributable to water discharge.