The thick shelled river mussel (Unio crassus) has a fragmented distribution in southern Sweden. It is a threatened and protected species. In both the Swedish red list and the IUCN Red List of Threatened Species Unio crassus is classified as Endangered (EN). Causes for this classification are for instance differentiated bottom substrate and deterioration in water quality. In this study, habitat preferences of Unio crassus were investigated to assist in future restoration work.

The structure and performance of grocery distribution in Sweden has changed profoundly since the second world war. Increasing access and usage of the private car, in combination with an accommodating town planning has enhanced the exploitation of scale economies within distribution firms. There is, however, some ambiguity concerning the overall efficiency of the distribution system when the costs associated with travelling and purchasing performed by households are treated as an integrated part of the total distribution cost function. The purpose of this master thesis is to develop the foundation of a spatial optimisation model, which defines the most efficient distribution system. The underlying idea is that the optimal localisation and size of grocery stores is a function of economies of scale within the firms weighed against distributions costs within the households, such as transportation costs.

Future emission legislation puts great emphasis on increasing the efficiency of the engine, thereby reducing fuel consumption. The tribological contact between cylinder liner and piston ring is where an great amount of energy is lost due to friction, and by reducing these losses an reduction in fuel consumption can be achieved.The aim of this thesis was to evaluate the tested piston ring coatings against a plasma sprayed cylinder liner and rank these combinations of materials for friction and wear resistance. The coatings that were tested was Cr + Al2O3, (Al,Cr)N, two types of CrN and WC / C.The experimental tests were performed with a so-called pin-plate, where used oil with addition of an acidic mixture of sulfuric and nitric acid to mimic the acidic condensate formed when exhausts recirculate, were added with a continuous flow. The results were then analyzed by weighing, studies by optical microscopy and scanning electron microscopy (SEM) and profile measurements.The results from each material combination were that the plasma coated cylinder liner wears too aggressively in order to yield a ranking of the piston ring coatings based on the parameters of friction and wear resistance. It is therefore proposed that an alternative coating on the cylinder liner should be developed, lacking the large abrasive wear on piston rings and that can withstand the corrosive environment resulting in engines equipped with EGR.

Microproduction, also called distributed generation, is something that has become more and more popular in the electric grid. Microproduction can however lead to unacceptable performance if several units are installed in the same low voltage network. It is therefore good to know a limit where the performance of the low voltage network becomes unacceptable based on given parameters. This limit is usually called hosting capacity.In this report the hosting capacity with respect to voltage and current have been studied in three low voltage networks which are located in Falu Elnäts concession area. This has been done by simulations in a GIS-program where critical times of the grid have been simulated.

Titel: Det gemensamma ansvaret fo?r lokal folkha?lsoutveckling - En studie om folkha?lsoarbetets villkor i tva? svenska kommuner. Bakgrund: Befolkningens ha?lsa a?r beroende av fungerande samha?llsstrukturer da?r kommuner har en central uppgift att vara med och skapa dem. Arbetet att skapa goda villkor fo?r ma?nniskors ha?lsa a?r en komplex uppgift.

Essay in political science, C-level by Mikael GranathAutumn semester 2012, Tutor: Freddy Kjellström- Ideological convergence in Swedish party politics?- An analysis of ideologies of the Swedish Social Democratic party and the Swedish Moderateparty and their healthcare and health service policies between the years of 2002 and 2010.The main purpose of this study is to examine the truthfulness in the common perception thatthe Swedish moderate party and the Swedish social democratic party are increasingly sharingthe same political views - particularly between the years of 2002 and 2010. The main researchquestion is:?Did the Swedish Moderate party and the Swedish Social Democratic partyideologically position themselves closer in the year of 2002 than they did in 2010within the health care policy area?The research design chosen for this study can be labelled as a comparative case study wherethe two political parties party programs and election manifestos that were current in the yearof 2002 and 2010 are studied. This is done to give a better view of ideological change.

In this study we try to focus on the costs for wear parts on different type of soil tillage machines and at Väderstad Rapid drilling machine. We have studied some of the leading types of cultivators and disk harrows. Among the cultivators we have investigated Väderstad Cultus, Dalbo Dinkomax, Horsch Tiger and Terrano. At disk harrow we have looked at Amazone Catros and Väderstad Carrier. We have made more detailed study on costs for wear parts, working depth, driving speed and diesel consumption.

Uppsalahem is the leading housing corporation in Uppsala with its over 160 real estate properties. Uppsalahem is owned by the municipality of Uppsala, which has a climate and energy goal that aims for 100 MW of solar energy to be installed in Uppsala by 2030. The 100 MW goal, combined with Uppsalahem?s environmental policy, is a strong incentive to investigate the possibility of installing PV modules on the many available roof areas that Uppsalahem possesses. The objective of this thesis is to create a foundation for future decisions regarding PV systems for Uppsalahem.

Fritidshemmens arbete med vila och rekreation befinner sig i skuggan av de ?vriga delar som ?terfinns i fritidshemmets uppdrag. ?tminstone r?der det ett forskningsgap g?llande hur l?rare i landet arbetar med dessa begrepp i praktiken. Genom v?r kvalitativa intervjustudie str?var vi efter att kunna bidra med mer underlag till forskningsf?ltet g?llande arbetsg?ngen kring vila och rekreation utifr?n ett policy enactment-teoretiskt perspektiv.

En upphandlande myndighet har en skyldighet att fo?lja upphandlingslagstiftningen na?r myndigheten upphandlar varor eller tja?nster. Vid rena lago?vertra?delser eller vid otilla?tna direktupphandlingar kan myndigheten bli skadesta?ndsskyldig. Skadesta?ndet har ba?de ett reparativt och ett preventivt syfte och ra?ttsmedlet skadesta?nd syftar till att sa?kersta?lla en effektiv tilla?mpning av upphandlingsdirektiven sa? att EU-ra?tten fa?r fullt genomslag i nationell ra?tt.

Bakgrund: God s?mn ?r viktigt f?r h?lsa och v?lbefinnande. Patienter p? sjukhus upplever ofta s?mre s?mnkvalitet p? grund av st?rningar och sm?rta. Sjuksk?terskor har ansvaret f?r att strukturera och genomf?ra omv?rdnadsprocessen, inklusive behandlande, h?lsofr?mjande och f?rebyggande ?tg?rder.

The milk production per cow has increased considerably during the last 50 years and due to the breeding for higher milk production also brings decreased reproduction efficiency. In a Swedish study 1996 it was shown that on average only half of all estruses were detected. Every time a farmer fails to detect oestrus it costs the farmer about 1200 Swedish crones and the need of means of detecting oestrus is therofore large. With this study we wanted to investigate if heart rate respectively crystallisation of vaginal mucus (arborisation) could be useful means of detecting oestrus. We monitored two oestrus cycles in four heifers.

The idea to develop  a platform for a PID-controller came from the need to control the temperature in  an espresso machine in a more exact way than a thermostat could perform. In discussions with Syntronic AB the idea developed into PID-control for industrial use. Syntronic AB suggested that the platform should be based on a commercially available processor module to shorten the development time. The suggestion included the use of the microcomputer Raspberry Pi, which supports USB, HDMI, memory card and Ethernet.The work began with establishing a schedule for the 10 weeks of the projects duration, and after that a system specification listing all functions, implementation and limitations was made. When the foundation of the system specification was done, a preliminary system design took shape.Because of the Raspberry Pi´s lack of Analog-to-Digital converter, a circuit board containing Wheatstone bridges, differential amplifiers and a two channel Analog-to-Digital converter was fabricated.

 With the increases in fuel costs due to the depletion of the world oil reserves and the increase of greenhouse gasses as a consequence to using oil as a fuel many companies are looking to new and innovative ways to power their aircraft. One of these new ways to power an aircraft is using fuel cells powered using hydrogen and oxygen, thus producing nothing but water vapour and small amounts of nitrogen dioxide as well as trace amounts of other emissions. Both Boeing (1) and Politecnico di Torino (2) have shown that it is possible to build an all-electric aircraft powered by fuel cells. Both flights used small, two-seater aircraft and a constant between them was the loss of the co-pilot seat due to weight and lack of space. As this paper will deal with a commercial aircraft a primary concern is the cargo and passenger capacity and whatever impact switching propulsion system has on these.

The knowledge of value-enhancing factors in condominiums is very important for real estate agents when valuing condominiums, but it is also of interest to the owner for an upcoming renovation and sale. Previous research has sorted out the most fundamental factors affecting value of condominiums such as location size, age and condition.The purpose of this paper is by consumer?s actual preferences regarding various attributes identify the most value-adding factors in condominiums. Thereby we want to add and nuance previous research.This has been done through a quantitative method in which possible buyers have ranked how various attributes affect their willingness to pay. The results were analyzed and the median of the various attributes have been recognized.The result shows in accordance with previous research that the location is the primary value-adding factor.