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.

Early intervention is important on different levels and must be justified as a social and economic long-term investment. There is no doubt about the importance of early detection when helping children/students in need of support. What kind of support that is deemed suitable and who provides the support can be viewed from different perspectives and with different approaches. Seen from a relational perspective the special education process is a long-term process and affects not only the individual but the whole school culture and systems may need changing. This study intends to describe the importance of the learning environment and what efforts are initiated early for students in need of support from the special education point of view.

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.

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.

The right usage of tacit and explicit knowledge is becoming increasingly important for businesses worldwide. This thesis searches the answer to how management consultants tackle the challenges originating from converting this type of knowledge into codified use. With the help of a case study analysis it was possible to gain special insight into the processes of knowledge collection, codification and re-usage at a major organization built upon knowledge utilization. In order to provide the reader with a wider picture, the main subject of the study has been analyzed from two perspectives: a practice based and an objective based perspective. Furthermore, two different types of knowledge, tacit and explicit have been differentiated and studied in relation to each other, to gain a better understanding of their origin and conversion process.

Today the right of the child to participate freely in cultural life and the arts is a goal on the political agenda. As a consequence, in 2011, twenty-six government agencies and institutions of culture were assigned to formulate strategies for activities for children and young people. These strategies are the empirical basis of this thesis. The aim of the study is to elaborate and problematize three issues concerning children?s culture from the viewpoint of a social constructionist understanding of childhood as constructed in various, often political, practices.

AbstractTitel: Self-presentation at online dating ? through a gender perspective and an age perspective.Number of pages: 44Author: Karin WestlundTutor: Amelie HössjerCourse: Media and Communication Studies CPeriod: Autumn term 2009-12-21University: Division of Media and Communications, Informatics and Media, Uppsala UniversityPurpose/Aim: The aim of this essay is to examine the phenomenon Internet dating through a gender perspective and to some extent through an age perspective. What do the members? presentations look like? Do men and women select different ways to present themselves, and how does it look between the different age groups?Material/Method: Qualitative method with 42 presentation texts, half men, and half women in three different age groups collected from a Swedish dating site.Main results: The study shows that men and women choose to highlight their good points at self presentation in the student forum. The differences between the various age groups proved not to be significantly large.

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 purpose of this master thesis is to investigate the understanding of children's librari-ans regarding children's needs and preconditions in a library context and based on devel-opmental psychology and information seeking theories. The children's perspective is said to be the guiding star in the children's library and the thesis also aims to study the chil-dren's perspective as defined by children's librarians.The master thesis is a qualitative study based on interviews with children's librarians working at major public libraries. Observations of the children's libraries in the study have to some extent been performed.The study reveals that children's librarians are fairly knowledgeable about children but do not to a full extent use that knowledge into adapting the library to children and their needs. The children are not contributing to the adaptation of the library to any extent as there are few routines for that matter. In society in general children are on a regular basis represented by adults and their perspective on children and children's needs, which may differ from the perspective children have on their own lives, and the same is applicable for the children's library.

The purpose of the study is to find out how some teachers in Kenya reason about children in need of special support. To undertake the study the following question are used:How do some teachers in Kenya reason about children in need of special support?The study has been made with qualitative interviews in Kenya. A total of four teachers at primary school level have been interviewed. The decision to do qualitative interviews is made by the opportunity to get as comprehensive answers as possible from the respondents' reason about children in need of special support.Three different kinds of special education perspectives have been used in this study.

Near Field Communication (NFC) is a short range wireless communication technology that enables data exchange between devices. NFC is used in many different areas, from subway tickets to authentication systems. This paper presents possible security threats to Near Field Communication and documented attacks that have been used to target various NFC protocols. Weaknesses in different NFC protocols will be presented and suggestions on how to counter certain weaknesses will be discussed. This survey will be valuable for companies interested in protecting their data when using or planning to use NFC systems..

The purpose of the paper is to explore of what importance network relations are to the small fashion company Clemens en August. Clemens en August is a new German fashion label, which has the goal to become established in the high-end segment. The company uses an innovative sales strategy, directly distributing its products to the end costumer. The theories used will serve as a tool to analyze Clemens en August 's strategy from a network perspective. As the Bachelors thesis nr: 12464 ?Clemens en August ? A Network Perspective?, authors; Malin Elmlid, Biancastella De Angelis and Carsten Juldorf, date of approval 2006-01-11, contains delicate data about the studied company we have decided to classify it as secret.

The mental constructions of other places are based on impressions from everything that surrounds us in our everyday life, e.g. pictures, videos, texts and narratives. The tourism industry is especially influential when it comes to creating the image of before ?unknown places?. Furthermore, it has a tendency to embellish and idealize people and places located in what is commonly known as the Third World.

This scientific essay is based on four self-perceived situations that all takes place in an outdoor environment. The children are aged seven to nine years. At least one of the children in the groups has some type of concentration difficulties. I have combined my practical experience with literature and previous research regarding outdoor education and children with concentration difficulties. Based on this I have tried to interpret and reflect on the opportunities and problems with outdoor education for children with concentration difficulties, especially so called situational concentration difficulties.