Cooling down the indoor air can be done in several ways. One way is desiccantcooling which will be used at the Stockholm Arena. This method is used in airhandling units that use temperature changes and moisture fluctuations in the air. Oneof the steps is to add heat during the cooling process in order to reduce the relativehumidity of the exhaust air. The air passes thru an adsorptions rotor which thenabsorbs moisture from the supply air.

Inom nuklearmedicinsk diagnostik används radioaktiva läkemedel för att utvärdera olika organs metabolism och fysiologiska beteende. Genom att använda en scintillationskamera kan strålningen som erhålls när det administrerade läkemedlet sönderfaller i kroppen detekteras och en funktionell bild över aktivitetsfördelningen erhålls. En tredimensionell bildvolym kan erhållas om gammakameran får rotera runt patienten vilket kallas SPECT (Single Photon Emission Computed Tomography). Bildernas kvalitet är av stor betydelse för att kunna göra en noggrann bedömning av olika patologiska tillstånd. Kvaliteten begränsas av en mängd faktorer och en av dem är Comptonspridda fotoner.I denna studie optimerades bildkvaliteten för SPECT-undersökningar med 111In-Octreoscan för ett Infinia Hawkeye 4 (GE Healthcare, Wisconsin, USA) SPECT-system vid Norrlands universitetssjukhus (NUS).

Detta arbete utfördes i syfte att analysera och utvärdera effekterna av att dosera svavel till förbränningen i en biopanna. En utrustning för detta ändamål installerades till biopannan vid fjärrvärmeverket i Arvika för att få bukt med höga halter av kolmonoxid i rökgaserna. Analysen har genomförts med avseende på hur väl svaveldoseringen uppfyller sitt tilltänkta syfte men även på eventuella bieffekter. Korrosionsrisker, halter av oförbränt svavel i rökgaser, rökgaskondensat, flyg- och bottenaska samt vad som sker kemiskt i förbränningsprocessen vid tillsats av svavel har studerats. Driftrapporter från biopannan analyserades parallellt med en informationshämtning i form av en litteraturstudie och kontakt med sakkunniga personer för att svara på ställda frågor.

The aim of the paper is to explore the dominating perception of the Other after the conflict regarding the Danish Mohammed caricatures. How Swedish newspapers have portrayed Arabs, which role they have been given in society and what problems they are struggling with is going to be the focus of this thesis.As methodological approach I chose discourse analysis, since it presents a view where language defines and structures our understanding of reality. Through the study of various Swedish newspaper articles, this essay tries to illustrate the implicit yet existent negative image of the Arabs as a group and potential alternative ways of understanding the Other.The perception of Arabs is a product of a necessary imaginary foe, a mirror image of the bad and strange in contrast to the idyllic and safe Swedish nationality. The rhetoric?s of the discourse are therefore constructed between a politics of acknowledgement and a will to culturally dominate the Other.

Fire is an important ecological factor, but its consumption of coarse woody debris, CWD, has hardly received any attention. In this study, I investigate the consumption in relation to the time of initial flame exposure and propensity for continued combustion of standing CWD of pine (Pinus sylvestris). Two types of CWD were studied. Firstly, wood that had been dead for one to ten years. Secondly, wood that had been dead for several decades. In the burning experiments, logs of approx.

Abstract Spiritual gardening, historical perspective and epistemology, - how do these concepts connect? A review of the ideologies of four pragmatic growers. The purpose of this thesis is: ? to present an alternative forthcoming perspective on knowledge, that may be of significance for future theories and knowledge about growing and gardening. ? to lift experiences with Nature Spirits into an academic context, that permits us a closer look at the phenomenon. ? to contribute to an academic platform connecting humanistic and natural sciences. The intention of this text is to bridge the differences between the strictly rational traditions of knowledge and those more experience based ones. The thesis wants to show that much can be won if feeling based and mental reflections once again are approached as equal sources of knowledge. The aim is to give an orientation about the subject of Nature Spirits. The interesting fact is not whether (that) one can talk to nature, but how one does it and that more can be understood about nature and the reality that the established sciences study. The form for this study of literature is a describing presentation; to put names on and give wording to the phenomena of Nature Spirits and Plantdevas. The sources of literature are four pragmatic practitioners of spiritual gardening who have written extensively about their own work.

In this report an MCNP (Monte Carlo N-Particle) model is described for the reactor vessel at Ringhals 2. The model is validated against the specific activity in neutron dosimeters, extracted in 1977, 1984 and 1994. The validation showed that the calculations of the model are within the requirements of a maximum of 20 percent uncertainty for every neutron dosimeter except one, extracted after the first cycle. The uncertainty of this cycle was mostly due to the operation data rather than to the MCNP model.The model has been used to investigate various questions concerning radiation damage. The reliability of the traditional measure of radiation damage, fast neutron flux (En > 1MeV) has been evaluated.  This has been done by taking the ratio for this and another measure of radiation damage, DPA (Displacement Per Atom), for various positions and layers.

The Swedish production of biogas was 1,5 TWh 2011. About half of the production was used as vehicle fuels. The cost for upgrading biogas depends on the size of the biogas plant and its gas production. If the gas flow is low the cost will be high. However, further development of existing upgrading technologies or development of new ones, have good potential to decrease the upgrading cost for small scale biogas plants.

AbstractRelationships between white women and black men have become a topic of interest in various discussion forums. By examining different arguments within certain discourses, it becomes clear that discourses that have a distinct autocrat outline, i.e. a closed and declaring nature which excludes alternative discursive arguments, also define these relationships as different and deviant in comparison to relationships that does not encompass and include the constellation white women and black men. As a result of the use of autocrat discourses the white women and black men who enter into relationships are displaced and positioned as subaltern. A position which, on the one hand, allows for uninhibited criticism, but, on the other hand, and most importantly, it is a position from where they can be defined by others.

In this essay the author has chosen to analyze the similarities and differences between some of the northern Europe?s late Mesolithic and Neolithic cultures. The research is of a processual standpoint and the information is mainly gathered from secondary sources as well as ethnological studies. The material collected has been analyzed in both a processual and a post-processual manner to most accurately study the foundations of the three primary theories describing the Pitted Ware Culture?s origin.

Abstract In order to make the modern agriculture less dependent on non-renewable external inputs, it has to rely more on ecosystem services. The agricultural system produce not only food, fiber and fuel, it also generates other ecosystem services such as e.g. photosynthesis, recycling of nutrients, influencing local microclimate, pollination, biological control and detoxification of noxious chemicals. This study is an attempt to get a better understanding about the interaction among different ecosystem services and different habitats capacity to generate them. An evaluation of eight different methods is done. The ecosystem services studied are the ability to absorb solar energy, biomass production, botanical diversity, decomposition and natural predation of aphids.

Every year about 210 000 tones dry weight of sewage sludge is produced in Sweden. Most of the sludge is applied to agricultural land, plantsoil and landfill cover. Sewage sludge contains essential nutrients such as nitrogen and phosphorus. Nitrogen is limiting growth on solid ground in Sweden and can therefore be used as fertilizer to increase productivity. In order that the sludge can be spread to forest land it requires first a conversion of sludge to pellets, to make it more manageable.

Sahlgrenska Academyat University of GothenburgDepartment of Internal Medicine and Clinical NutritionAbstractTitle: Can an increased intake of omega-3 fatty acids have an effect on testosteronelevels in women with PCOS?Author: Ylva Dernbrant och Helene HagenborgSupervisor: Lena HulthénExaminer: Anna WinkvistProgramme: Dietician study programme, 180/240 ECTSType of paper: Examination paper, 15 hpDate: May 23, 2012BackgroundPolycystic ovary syndrome affects women of fertile age and consists of elevated testosterone levels and increased insulin resistance along with effects on ovulation and fertility. The elevated level of testosterone often leads to problem with acne and hirsutism, and it is also common with overweight and metabolic syndrome. The nutrition treatment has mainly consisted of energy restriction, together with exercise and drugs to reduce insulin resistance and consequently reduce androgen levels. However, an in-depth knowledge about how the components of our diet can affect further, is lacking.Omega-3-fatty acids can affect insulin resistance and testosterone levels within other groups but today knowledge is lacking if these findings can be transferred to women with PCOS.

This research focus on key groups; students with dyslexia, librarians and teachers, and interaction between these two professional groups regarding students with dyslexia. In searching for the exchange of knowledge and experience to meet dyslexic students needs, I have in this study turned the attention to librarians and their experiences with students with dyslexia.The purpose of the research has been through semi-structured qualitative interviews with four librarians, to explore and describe how they experience their work, in working with pupils with severe reading and writing problems, dyslexia, and interaction with teachers on this user group. The qualitative approach in the gathering of the empirical evidence is based on a desire to have an indepth and thoroughly understanding of the librarians experience.All informants in this study indicate that they see it as a natural part of their duty to keep themselves updated about dyslexia and what materials to suit the dyslexic user group. The informants have knowledge of dyslexia and have great knowledge and keep abreast on the latest technology of compensatory aids - alternative tools.The informants have primary a consulting and supply function for teachers and dyslexic students, where they are consulted on  suitable material in both fiction and facts in various disciplines. The informants highlights the importance of planning and preparation time to find suitable material, as audio books or easy read, so students who have a need for this also can be provided.

Purpose: The purpose of this study is to investigate the effect and potential of a non-styled home reportage, and how they influence and inspire to promote individual creativity.Method: I have used a qualitative analysis to be able to create a deep understanding. This is based on three interviews with women in age 22-27, which have a dedicated interest in interior design. I have also sent questionnaires to two persons who run interior design blogs.Conclusions: My analysis shows that the non-styled home reportage is the start of an inspirational process that is beyond consumption and status objects. It promotes individual creativity and willingness to create, based on personnel taste. The essay highlights the importance that the individual critically examines the aesthetics of interior design as presented in diverse media.