The first commercially produced wind turbines in Sweden are starting to reach theend of their lifetime after approximately 25 years of producing energy. The cost fordismantling the turbines, according to Ardefors et al. (2009), is calculated to be 1-2 %of the total investment of the wind turbines. The purpose of this master thesis is tomap the dismantling process of wind turbines in Sweden and try to find a sustainablesolution for the future.To make sure that a correct dismantling process takes place, and that the financialaspect is covered, a proposal for a financial guarantee is worked upon. A nationalunanimity will be created through a financial guarantee and the risk will be minimalof a third party getting afflicted.Studies of literature and interviews have been carried out.

Under litteraturstudierna fick författarna en uppfattning om att järnvägsbranschen är präglad av en hel del problematik som visat sig i ett flertal brister. Flera större omorganiseringar hade skapat en bransch med otydliga ansvarsgränser och otydliga roller med en mängd utdragna rättsliga tvister mellan beställare och entreprenörer som följd. Stämningen beskrevs som dyster och kompromisser mellan järnvägsaktörer förekom inte i den mån som behövdes, utan aktörerna tänkte mest på sin egen verksamhet. En ändring behövdes.Rapporten är begränsad till tre nyckelaktörer med koppling till järnvägsunderhåll: beställare, entreprenör och trafikutövare. Fokus har lagts på det alltför förekommande avhjälpande underhållet, som visar sig i form av trafikstörningar och trafikstopp.

The use of gabions means a reduced amount of filling material in the road section and a more narrow construction. Also the use of limestone cement columns can be reduced. All together this results in lower costs. The columns stand for about 55% of the total costs for the road. If gabions are used you can reduce the total costs with over 10%..

In hydropower plants it is necessary to always have local power supply. Therefore, the plants are equipped with batteries as stationary back up power. Vattenfall Vattenkraft is using lead acid batteries but has been investigating alternatives to replace them. The aim of this study is to investigate the potential of using Li-ion technology as back up power.The study showed that Li-ion batteries have many qualities. The Li-ion technology will decrease the space and maintenance demand.

Syftet med denna studie var att beskriva hur sjuksköterskor inom äldreomsorgen skattar sin arbetssituation utifrån strukturell- och psykologisk empowerment, arbetstillfredsställelse, upplevd hälsa, vårdkvalitet samt chefs- och ledarskap. Vidare var syftet att studera skillnader och samband mellan ovan nämnda faktorer utifrån subgruppers (ålder, yrkesverksamma år, heltid/deltidsarbete och uttag av kompetensutvecklingsdagar) skattningar. Under 2011 ? 2012 besvarades fyra standardiserade frågeformulär av 79 äldrevårdssjuksköterskor i fem kommuner i Mellansverige. Resultatet visade att sjuksköterskor som var 50 år eller yngre upplevde att de fick mer kritik än äldre sjuksköterskor.

This master thesis reviews advances in detection and diagnosis of static friction (stiction) in control valves. Control valves suffering from stiction results in oscillating control loops which in turn decreases both the process stability and reliability. Perstorp AB sees a necessity to automatically detect stiction in valves before the effects of the malfunctioning valves have become too severe. This thesis presents an introduction to maintenance, control loops and how stiction in valves can affect performance of control loops.A selection of methods presented in the literature are introduced and examined using normal operating data from the site in Perstorp. Common for all selected methods is their intuitive ideas and that they are based on normal operating data and minimum amount of process knowledge.

I detta arbete presenteras en metod för bestämning av fri kotinin och totala mängden kotinin i urin och serum. Metoden bygger på hydrolys av prov (för total bestämning av kotinin) och extraktion i metylenklorid. Bestämning av kotinin har gjorts med HILIC-MS/MS..

Bakgrund: För att kunna bli organdonator måste en patient avlida i total hjärninfarkt medan han/hon vårdas i respirator. Det är få personer som avlider på detta sätt.  När döden har fastställts får medicinska åtgärder inte fortsätta mer än 24 timmar. Sjuksköterskan som bör vara med i hela processen, står inför flera utmaningar; är patienten lämplig som organdonator? vad är patientens önskan? vad är anhörigas önskan? m.m. Syfte: Syftet med studien var att belysa sjuksköterskans upplevelse av att vårda en potentiell organdonator med diagnostiserad total hjärninfarkt.

The Swedish Transport Administration manage nearly 4,000 railway bridges in different condition and age around the country. These bridges is in constant need of maintenance and requires continuous inspections. This thesis is designed as a damage investigation on a single-track railway bridge south of Solvarbo in Säter municipality. The railway bridge is in operation and serves over 10,000 trains a year, everything from speed trains to freight trains. The bridge is built as a beam bridge, simply supported over a road.

Eutrophication is a major problem in the Baltic Sea, as a result of increased loading of nitrogen and phosphorus. In the coastal parts of Östergötland the soil largely consists of clay and contains high levels of phosphorus bound to clay particles. Erosion of the soil in agricultural areas makes the water turbid and transports phosphorus to the Baltic Sea. The aim of this project was to examine the relationship between phosphorus and turbidity in the coastal streams of Östergötland. The aim was also to evaluate the possibility to use turbidity as a surrogate measure for phosphorus.

The purpose of this essay is to illustrate the preparation of total and civil defense education in schools in the 1970s to gain insight into how the school looked and pondered the complicated world that existed outside the school's doors. By using the concepts of welfare state, welfare and civil defense culture, I have studied relevant materials to get answers to questions treating the total and civil education in schools after Lgr69, the way the state sees the subject and if it is possible to detect a civil defense culture in schools and if so, how it will be expressed.     The results show that the state emphasized education as incredibly important because knowledge of how to act in a crisis or war could be extremely crucial for the individuals and their survival. The education was so important that it got a role as a main factor in Lgr69. But even if the education was important the teachers had huge problems with the schedule and many teachers couldn´t educate all facts because they didn´t have enough time.

The specified purpose was, based on gender, age and type of employment, study the employees motivation to participate in health projects and their reason to maintain exercise habits after the termination of the health projects. Exercise frequency was studied in relation to the other background variables. A revised version of the questionnaire Motivation for Maintenance of Exercise Habits (Josefsson, 2005) was distributed at Albany International, Halmstad. The most frequent cause to exercise was ?enhance my condition?.

This paper deals with the opportunities for the technique of condensation, for wood fired household heaters, on the Swedish market. In this project the condenser is preceded by a scrubber and both energy exchange and separation of unburnt particles have been studied. The facility studied is connected to a wood stove at 30 kW. The tests would show that the effect from the stove never reached above 16 kW. This might be a result of the low temperature of the water going into the stove, from the condenser. In addition to this the wood was not of highest quality and the stove could have needed some maintenance before the tests.

This paper thoroughly investigates needs and requirements for overhead distribution feeder inspection and develops models to investigate possible relations between short term inspections remarks and outages. The study was conducted in collaboration with Fortum Distribution AB that supplied extensive information about their overhead power feeders concerning both inspection and power outages. The investigated models where lognormal linear model, Poisson generalized linear model and negative binomial generalized linear model. All models were implemented utilizing offset terms to compensate for differences in feeder length and amount of overhead versus underground feeders. The Poisson generalized linear model was rejected at an early stage due to overdispersion and neither of the remaining models fit the data perfectly.

Large areas of forests in the tropical region have during the last decades been lost and converted to new land uses while other areas have been degraded into secondary forests. These secondary forests need to be restored and rehabilitation through enrichment planting and liberation may help to speed up the recovery process. The objective of this thesis was to evaluate a rehabilitation method that includes enrichment planting, slashing of weeds and girdling of unwanted trees. The site for the project is situated in Sabah, Borneo in a secondary forest which had been logged and burnt by a wildfire. The project?s goal is to rehabilitate and increase biodiversity through enrichment planting of seedlings mainly belonging to the family Dipterocarpeaceae (dipterocarps).