Deicing fluids based on Propylene glycol are used at Stockholm Arlanda airport to remove or prevent ice on aircrafts. The high oxygen demand of propylene glycol can cause oxygen depletion in rivers downstream from the airport if not collected. Mass balance calculations made by Swedavia indicate that the actual amount of gathered propylene glycol is underestimated. Suspicions that propylene glycol is degraded in the stormwatersystem designed to collect deicingfluids, called the B-glycolsystem, have to be investigated in order to establish with certainty that no propylene glycol in other ways leaves the B-glycol system.The purpose of this study was to determine if degradation of propylene glycol is present in the B-glycol system and also to estimate the extent of the degradation. Propylene glycols high biological oxygen demand can cause oxygen depletion in waters downstream from Stockholm Arlanda airport if not collected.

This thesis work was made for Södra Cell Mörrums bruk in Blekinge. The purpose of the work was to develop a computer model in the simulation program Extend for the removal and balance of organic oxygen consuming substances, measured as COD (Chemical Oxygen Demand), in the new biological treatment plant in the mill. The plant produces two different pulp products, TCF- (Totally Chlorine Free) pulp and ECF- (Elementary Chlorine Free) pulp, for sale. The different bleaching procedures affect the characteristic of the wastewater and thus the effectiveness of the biological treatment plant.In the model that was developed the COD in the wastewater was divided into five different COD-fractions: soluble easily degradable (SS), soluble hardly degradable (SR), soluble inert (SI), particulate inert (XI) and particulate biomass (XB). To create the model FlowMac? was used as a base.

Background Atelectasis is a commun respiratory complication related to general anesthesia and may contribute to pneumonia and acute respiratory failure. Atelectasis apear within 10 minutes after anesthetization and occur in 90% or more anesthezied patients regardless of age and gender. The aim of this study was to indentify if there are any evidence for which methods are ultimate or are most efficacious to reduce and prevent the formation of atelectasis.                                                                                                          Methods This study is a descriptive litterature study where 28 scientific studies have been indentified for review and analysis.                                                                                                               ResultsThe use of 100% oxygen during the induction of anesthesia favors the developement of atelectasis. This can be prevented by preoxygenation with oxygen content of 100% combined with a PEEP of 6-10 cmH2O. When free airway is secured, oxygenation with 100% was found to be unnecessary.

The presence of nostalgic emotions during consumption is often seen as something purely positive to a product. To evoke these emotions has become a very common tool in marketing and advertising. Paradoxically very few studies have focused on the effects of nostalgia. The purpose of the thesis has been to understand how the presence of nostalgic emotions during consumption effect consumers. The research model used is a quantitative study with testing of hypotheses generated from theory.

Swedish consumption habits led to a discourse on consumption needs of the general public during the first half of the 20th century, involving primarily several institutions, but also a variety of popular movement organizations, among which we find Kooperativa Förbundet. In this discourse, ascetic consumption and a rationalized outlook on consumption were idealized, as the Swedes needed to be economical not to live beyond their means. The objective of this study is to investigate the ideals this type of discourse conveys throughout the latter half of the 20th century. This will be achieved by investigating selected editions of the cookbook ?Vår Kokbok? published by Kooperativa Förbundet.

SammanfattningSyfte och frågeställningarSyftet var att studera sambandet mellan GIH:s Gångtest och bestämd maximal syreupptagningsförmåga (VO2max). En av frågeställningarna var om GIH:s Gångtest är ett alternativt test för att försöka predicera maximal syreupptagningsförmåga hos friska fysiskt aktiva unga vuxna.MetodI studien ingick 45 fysiskt aktiva personer (26 kvinnor och 19 män) i åldrarna 19-28 år. De två genomförda testerna är GIH:s Gångtest (ett 6-minuters gångtest) och bestämning av maximal syreupptagningsförmåga med löpning på ett motordrivet rullband.GIH:s gångtest är ett shytteltest där testpersonen (Tp) går fram och tillbaka på en 50 meter lång sträcka och runda två koner. Tp får gå denna sträcka så många gånger som möjligt under 6 minuter. Vid testets slut mättes maximal gångsträcka, puls och ansträngningsgrad.Testet för att bestämma maximal syreupptagningsförmåga utfördes med löpning på ett motordrivet rullband.

This report is an inventory of the street lighting in half of the residential estates owned by Karlstad Bostads AB, a public housing company. The inventory was made to reduce the environmental impact of the street lighting. From the inventory an estimation of the total installed power and the energy consumption was made. The total estimated power of the street lighting was 125 kW and the energy consumption was 500 000 kWh/year with an estimated running time of 4 000 h/year. The dominating source of light was 125 W discharge mercury lamps.

Bakgrund: Träning medför hormonella förändringar och anpassning av vävnader. Under kvinnans menstruationscykel fluktuerar halten könshormoner. International Organization for Physical Therapy in Women?s Health (IOPTWH) anser att vårdutbildningar på grundnivå bör inkludera kunskap kring kvinnans specifika fysiologi. Detta bör tas hänsyn till och inkluderas i sjukgymnastens arbete, rehabilitering och träning av kvinnliga patienter.

Bakgrund: Styrketräning kan öka muskelstyrka och muskelmassa för såväl otränade motionärer som vältränade elitidrottare. Teorierna kring effekterna av olika typer av styrketräning baseras i stor del av forskning på otränade individer. Syfte: Syftet med denna studie var att undersöka vilken form av styrketräning som ger en frisk, redan vältränad individ störst ökning i maximal styrka och/eller muskelmassa. Metod: Studien är en litteraturöversikt med granskning och bedömning av studier som avhandlat olika styrketräningsformer på vältränade individer med >2 månaders erfarenhet utav styrketräning och som utvärderat resultatet i maximal styrka eller muskelmassa. Artiklar söktes i databasen PubMed.

Title You play, we?ll watch ? a study about e-sport consumption and communityAuthor Simon KarlssonSemester Spring 2012Tutor Malin SveningssonNumber of pages 67 (1 appendix)Aim The study aims to explore the motivations and needs behind e-sport consumption and the possible identity construction it entails.Method Qualitative methods: interviews and participant observations.Material Ten interviews with individuals from the barcraft community in Gothenburg, Sweden. Ethnography studies from four locations in total for the e-sport tournament GBG E-sport Open: three from qualifiers and one from the finals.Main results E-sport consumption proved to fill a variety of needs. Affective: To be entertained and experience emotional satisfaction. Social integrative: to connect with friends and other viewers.

Previous studies have shown that there exists a gap between purchase intention and behavior in consumption situations. This gap is especially prevalent for sustainable or green products and even more so in terms of sustainable apparel consumption. Therefore, the adoption of sustainable fashion remains low as fast fashion dominates the industry. A counter-movement for mass consumption - access-based consumption - has reached the apparel industry and in Sweden we see it in the form of clothing libraries. This qualitative thesis uses in-depth interviews to uncover the feelings of seven consumers towards the idea of accessing rather than owning their clothing as a more sustainable consumption form, factoring in the strong identity connection that we have to our clothes and how this affects their perceptions.

Yeast and Clostridia is a problem in silage for farmers as contaminated silage may result in poor animal health and milk quality. Clostridia can produce toxins that, when consumed, acts as neurotoxins, it may also cause blown cheeses if the Clostridia contaminates milk. The purpose of this study was to investigate the cause, effect and interaction of yeasts and Clostridia in silage. Clostridia are microorganisms which are strictly anaerobic and consume carbohydrates and protein in the silage. Yeast is a fungus that is facultative aerobic and feed on carbohydrates in the silage.

In published studies it is found that the fuel consumption on a forwarder is relatively constant, on time basis. A certain variation between different sizes of forwarders occurs as well as between different working elements. The aim of the study was to establish a forwarders comparatively fuel consumption when driving on road and in the terrain, loaded and unloaded, with high and low gear and with high and low speed as well as with hydrostatic and hydrodynamic transmission. A hypothesis was that low rpm gives lower fuel consumption on distance basic, at all trials. The test driving was made with a Hemek 750 which is a three geared hydrostatic machine and with a Hemek 700 which is a hydrodynamic machine with six gears.

The gas turbines in the Swedish secondary reserve are reaching the end of their technical lifetime, hence alternative solutions need to be considered. One of the solutions thought to have the greatest potential is the use of so called consumptionreduction. By entering contracts with large consumers, agreements are made to reduce consumption in the event of major disturbances in the power system and thus being used as a secondary reserve. This thesis investigates the feasibility of consumption reduction as part of the secondary reserve. This has been achieved by developing a requirement specification for the disturbance reserve and by studying the technical and economic potential for consumption reduction among a range of consumers.The technical potential for consumption reduction that fulfils the requirements for participating in the secondary reserve are on average 750 MW in SE 3 and 98 MW in SE 4.

The gas turbines in the Swedish secondary reserve are reaching the end of their technical lifetime, hence alternative solutions need to be considered. One of the solutions thought to have the greatest potential is the use of so called consumptionreduction. By entering contracts with large consumers, agreements are made to reduce consumption in the event of major disturbances in the power system and thus being used as a secondary reserve. This thesis investigates the feasibility of consumption reduction as part of the secondary reserve. This has been achieved by developing a requirement specification for the disturbance reserve and by studying the technical and economic potential for consumption reduction among a range of consumers.The technical potential for consumption reduction that fulfils the requirements for participating in the secondary reserve are on average 750 MW in SE 3 and 98 MW in SE 4.