The purpose of this work is to design and construct a device able to measure the mechanical attrition of oxygen carrier particles. Those particles are used in chemical looping combustion and in the present situation there is a lack of knowledge in how the attrition process work and in which extension. To find already tested solutions trying to answering this problem a literature study wascarried out and the best solution found was the so called Grace-Davison Jet-Cup method. This method is supposed to emulate the attrition caused by a cyclone separator and its advantages are that it is possible to use small test amounts, 5-10 g, and a thirty minutes long test will be enough to acquire useable results. An device was designed based on the Jet-Cup method with some slight modifications.

Vole populations in northern Scandinavia vary in cycles with peaks every third or fourth year as described by the National Environmental Monitoring Programme of small mammals (NEMP). Some vole species have declined in population numbers since the NEMP started in 1971, especially the grey-sided vole (Myodes rufocanus) which is nearly extinct in the forested region. Since small mammals are an important food source for several avian and mammalian predators, the decline in vole numbers is expected to have consequences for the whole food chain, especially if other vole species start to decline in numbers. This study tried to test the hypothesis that presence and abundance of M. rufocanus (a specialist species) and Myodes glareolus (a generalist species) can be predicted by patch size and connectivity of forest patches >60 years old with a minimum of 15% pine >100years old.

The focus of this thesis is positioning and customer retention in newly started small service businesses. The thesis is based on the case study of two small newly started service businesses: Kåffe In that is based in Skellefteå and Lundström Aaro Design! which is based in Umeå. The thesis presents the conclusion that newly started small service businesses, regardless of industry, seem to work in accordance with the theoretical framework of the thesis..

In article 1.2 c) EC regulation 852/2004 it says that the regulation is not applicable to producers who directly supply small quantities of primary products to the final consumer or to the local retailers who in their turn directly supply the final consumer. An almost identical regulation can be found in article 1.3 c) EC regulation 853/2004. The supply by a primary producer of small quantities of primary products, of animal origin or not, are consequently excepted from these two hygiene regulations. In article 1.3 EC regulation 852/2004 and article 1.4 EC regulation 853/2004 it says that the member states are to establish national rules in their national legislation as to the regulation of exception for small quantities. The aim of this study was to investigate the handling of small quantities of primary products distributed locally in Sweden but also the handling of these products in other countries.

Due to a rising debate concerning corporate governance that has caused increasing demands for companies? transparency, several codes of conduct have been introduced. The Swedish Code for Corporate Governance is obliged to companies with a turnover exceeding three billions. There are companies that voluntarily apply the Swedish Code. Possible causes to this phenomenon ought to be that the code for corporate governance conveys legitimacy through the insight into the affairs of a company the public receives, through the report of the corporate governance that is published in the annual report and on the home page of the company.

Many companies are currently working to optimize and streamline their processes and production lines to achieve higher profitability. In increasingly competitive markets, companies are working to find solutions to increase the value of their production with such a small use of resources as possible. A tool used to accomplish this is the Lean management system. Lean comes from the production system that Toyota has been developing since the early 1900's, The Toyota Production System (TPS). The Lean philosophy helps companies, by working towards continuous improvement in its operations, to achieve higher customer satisfaction, more efficient production and ultimately higher profitability. Many companies are working to implement Lean in their organization. But there are many who fail to implement a complete change towards Lean.

The purpose of this thesis is to evaluate two pearl growing methods in ISI Web of Science. The methods tested are Find Related Records FRR, an automatic service that uses bibliographic coupling, and Author Keywords AK, where searches are performed using the two first keywords from this field. Both search methods were used on twenty initial documents and the first twenty hits were evaluated for relevance using a binary scale 0,1. The relevance criteria were based on specific information needs connected to every initial document. The measures used to evaluate the effectiveness of the search methods were Precision at DCV=10, P10, and Uninterpolated Average Precision AP.

Gross motor skills among Swedish pupils. An overview of functional motor abilities among Swedish children and adolescents.IntroductionPhysical Education (PE) teachers in Sweden have noticed that pupils are getting worse in their ability to manage gross motor skills and in their aerobic practice. The gross motor skills and coordinative skills are the solid ground for sports and other health activities. If not developing their gross motor skill children tends to avoid taking part in games and sports. The benefits of sports and outdoor activities such as social and health benefits can therefore be missed.

AimThe aim of the present study was to evaluate physical performance according to ?fysprofilen? in skiers of the Swedish mogul ski team and to compare their physical performance at three test occasions during one year.MethodsAll eight elite mogul skiers at the Swedish national mogul ski team during the seasons 2011/2012 and 2012/2013 participated voluntarily in this study. The test battery ?fysprofilen? was performed at three test occasions, October 2011, May 2012 and October 2012. Muscle strength was evaluated with squats, bench press and grip strength; power was evaluated with power clean, squat jump, countermovement jump with and without arm swing, Harre´s test and the 30 meters sprint.

This essay shows how natural areas in Älta, a part of Nacka municipality southeast from Stockholm, been changed quantitatively and qualitative as a result of the increased housing construction in the area. Three issues are discussed. Namely: how has Ältas green areas been changed in sizes and quality in line with the settlement's expansion, what is the reason or the reasons to building of different types of accommodations, what has been and is the operators in connection with building of the different types of accommodations?The essay shows that the green areas has been decreased with over 2 km from 1901 to 2000 and in addition to these areas of approximately 1,1km been converted to a planned green structure. Älta has during the years gone through four eras of building types an era of small family houses ? an era of building one million houses on a national scale ? an era of terrace houses ? an era of sporadic building of different housing types (one family houses, pair houses, terrace houses and small blocks of flats).

Lean production härstammar från företaget Toyota och Taiichi Ohno?s begrepp ToyotaProduction System. Metoden är idag ett dominerande styrmedel bland organisationer. Därmedhar konceptet implementerats i allt fler västerländska resultatstyrda organisationer, varsparametrar för kontroll skiljer sig mot de lean production utgår från. Dess innebörd sträckersig över stora delar av en organisation, vilket bidrar till begreppets komplexitet.

I want to look at the possibilities to start selling hot water from a small district heating plant with bioenergy. My reason for doing this project is to look at a new business opportunity for our farm. Our company have less work during the winter time compared to the spring and this project will give us more work during the winter. I also want to take as much material as possible for heating from our farm in order to increase the value of the products from the farm. The project is in a village near us, where we should support a school, a churh, a home for the aged, a kindergarten and a parish hall with heat. In my work I have compared two different alternatives with each other. The first alternative is to put a central heater in one of the buildings, the home for the aged, in which we will burn oat.

In the process laboratory of Metso minerals (Sala) AB, continuous tests have been made with a laboratory unit High-Rate thickener. The tests are made in order to compare three methods of thickening techniques of suspended solids. The three techniques are High-Rate thickening, conventional thickening and lamella thickening. The High-Rate and the conventional trials are based on a continuous method, while the lamella thickener is based on batch trials. Because the lamella thickener is based on batch trials and there were some optimization problems with the adding point of the flocculant at the continuous trials, it was not feasible to compare the lamella thickener with the other two thickener types.

This paper describes the work done trying to diminish the noise present in the signal from an IR-detector. The project was aiming towards two different kinds of applications; heat protection and presence detection. The hypothesis was that the signal-noise ratio would decrease if a filter and a proper installation were used for the detector. Some experiments were executed to determine what kind of filter were the most suitable for each application and how these could be installed. After executing the experiments and evaluate the results we recommend to use a specific filter for each application.

This essay describes and compares the extensive reindeer management to the more intensive, but grazing based, sheep management system in Sweden. Differences and similarities between the two production systems will be investigated by elucidating the economy, land use and possibilities to influence production and economy through breeding, feeding and product development. The reindeer management area covers the northern part of Sweden whilst the sheep management is dispersed over the country. Both reindeer and sheep are ruminants and have relatively high demands on the quality and digestibility of the feed however reindeers graze on mountain-and forest lands whilst sheep often graze inaccessible areas or cultivated grasslands. Selection intensity is generally lower in the reindeer management compared to the intensity in sheep breeding.