Secondary deciduous forests, which have their origin in earlier pasture- and meadow-land in slopes along the lower reaches of the Ume river, are thought to contain high nature conservation values, in spite of a relatively low age. The aim of this study was to clarify how factors as historical use, exposition, disturbance dynamics and successional age influences the conservation values in these types of riparian forests and how this can be implicated in the practical work with conservation and management at Umeå municipality. Sample plots were placed in seven stands with a variation of their historical use, exposition, disturbance dynamics and age of succession. Conservation values as structure, tree-regeneration, abundance and composition of vascular plants, amount of dead wood and the abundance of signal-species were measured and registered. The species composition and especially the composition of tree species, differed between forests with different exposition and different historical use.

According to FSC (Forest Stewardship Council) shall at least a mean of 10 trees per hectare including Riparian zones and other areas with high biological values be left in final felling. In addition large clear areas should not be created and all retained trees with high environmental value shall be spared. To leave trees in final felling means a lower cutting volume and hence a lower income from the cutting, but it also means that the production in the next generation becomes less because of competition. The aim of this study was to evaluate the effect retained trees have on the production in the new generation of forest, and to investigate if there is any way to lower this effect. The environmental care has also been estimated by the amount left in final felling.

One of the main goals of the national curriculum is to encourage children?s personal opinion and support them in development of argumentation ability and communication skills. All this is very important for the children as members of the future society.The purpose of this essay is to investigate how primary school teachers estimate the meaning of the pupil?s argumentation as well as which methods and approaches are assumed by the teachers to be most appropriate for children?s argumentation development. The study also considers the questions how the teachers motivate their pupil has to argue in the classroom and how the students by themselves understand the concept of argumentation.

The Blötberget deposit is situated in the north-western part of Bergslagen. The mineralization is an apatite-iron oxide ore of Kiruna type. In Bergslagen the apatite-iron oxide ores occur along a zone from Grängesberg through Blötberget to Idkerberget in the northeast and they represent the largest and the most important iron oxide deposit in Sweden, south of Norrbotten.Different REE hosting phosphate phases has been studied by optical microscopy and analyzed by EDS attached to an electron microscope.The key minerals other than iron oxides are apatite, monazite and xenotime. The relative concentration of the REE-bearing phases differs from the other apatite-iron oxide mineralizations in the area, for example Grängesberg, by a higher concentration of xenotime and lower contents of allanite..

An airline company that operates with its fleet needs to ensure that maintenance of a following and certain standard will be implemented. In this project we have sorted and divided the various working procedures of Malmö Aviation into Work Packs. These procedures are mandatory and must therefore be implemented in order to keep the aircraft airworthy at any time. Our task was to optimize and sort these working procedures by zone, panels, access and down time. We have created a maintenance program which Malmö Aviation can use and we have sorted their working procedures in B and C- Checks.Maintenance procedures that did not fit into our Work Packs have been gathered and sent back to Malmö Aviation for further inspection.This project has required a lot of extra reading in manuals and we have had a great insight into the complexity of a technical organization such as Malmö Aviation..

This is a work that look at the factors that affect future monthly costs when buying a house in Sweden and which options are the most financially favorable over a 30 year period. The work also examines whether it is economically beneficial to invest in a low-energy house regardless of geographic location in Sweden, and discuss about whether a calculation template can help individuals to choose more environmentally friendly options. The work has been limited so that a certain number of predetermined factors and its measurable values have been developed with the help of a literature study. The factors chosen are building type, climate, heating systems, loan interest rates, energy prices, energy price increases, inflation rates and down payment. These are then combined into 72 different calculation cases which get put in a calculation model made in excel.

Det huvudsakliga syftet med denna rapport var att undersöka några av marknadens brandväggsprogram som kunde tänkas vara lämpliga för vår målgrupp, det vill säga en hemanvändare. Detta eftersom det idag inte finns någon lättillgänglig information inom detta område. I sökandet av brandväggsprogram fann vi en uppsjö av olika typer av brandväggar och därför har denna undersökning avgränsats till endast fyra brandväggsprogram, nämligen Norton Personal Firewall, Sygate Personal Firewall, Tiny Personal Firewall samt Zone Alarm. Denna avgränsning gjordes genom att välja ut de som experter inom området utvärderat och har ansett vara de som är säkerhetsmässigt bäst på marknaden. Undersökningsgruppen bestod av 28 testare som passade in i vår definition av en hemanvändare.

Effekterna på öringens (Salmo trutta) diet till följd av en avverkning av kantzonsvegetationen har undersökts i ett fältexperiment, där två av de potentiella effekterna av en skogsavverkning simulerades. Fokus låg på de två faktorerna ökad ljusinstrålning och minskat nedfall av terrestra evertebrater. Ökad ljusinstrålning har simulerats med hjälp av montage av lysrör och nedfall av terrestra evertebrater med hjälp av plasttält. Frågeställningarna rör andelen terrester föda i olika behandlingar och årstider, dietskillnader mellan äldre och yngre öringindivider, skillnader i mängden akvatisk föda vid ökad ljusinstrålning samt en taxonomisk översikt av dietens sammansättning. Signifikanta skillnader mellan behandlingarna fanns, där individerna i kontrollbehandlingen åt signifikant mer terrester föda än individer i tältbehandlingen och den kombinerade tält- och ljusbehandlingen.

Effekterna på öringens (Salmo trutta) diet till följd av en avverkning av kantzonsvegetationen har undersökts i ett fältexperiment, där två av de potentiella effekterna av en skogsavverkning simulerades. Fokus låg på de två faktorerna ökad ljusinstrålning och minskat nedfall av terrestra evertebrater. Ökad ljusinstrålning har simulerats med hjälp av montage av lysrör och nedfall av terrestra evertebrater med hjälp av plasttält. Frågeställningarna rör andelen terrester föda i olika behandlingar och årstider, dietskillnader mellan äldre och yngre öringindivider, skillnader i mängden akvatisk föda vid ökad ljusinstrålning samt en taxonomisk översikt av dietens sammansättning. Signifikanta skillnader mellan behandlingarna fanns, där individerna i kontrollbehandlingen åt signifikant mer terrester föda än individer i tältbehandlingen och den kombinerade tält- och ljusbehandlingen.

Det huvudsakliga syftet med denna rapport var att undersöka några av marknadens brandväggsprogram som kunde tänkas vara lämpliga för vår målgrupp, det vill säga en hemanvändare. Detta eftersom det idag inte finns någon lättillgänglig information inom detta område. I sökandet av brandväggsprogram fann vi en uppsjö av olika typer av brandväggar och därför har denna undersökning avgränsats till endast fyra brandväggsprogram, nämligen Norton Personal Firewall, Sygate Personal Firewall, Tiny Personal Firewall samt Zone Alarm. Denna avgränsning gjordes genom att välja ut de som experter inom området utvärderat och har ansett vara de som är säkerhetsmässigt bäst på marknaden. Undersökningsgruppen bestod av 28 testare som passade in i vår definition av en hemanvändare. Tyngdpunkten i vår rapport har lagts på brandväggsprogrammens användarvänlighet, eftersom vår hemanvändare oftast inte besitter de tekniska kunskaper som i allmänhet krävs.

The freshwater pearl mussel (Margaritifera margaritifera) is threatened throughout its range. There has been a substantial decline of the species and one major reason is habitat degradation. We investigated how the substrate composition of the bottom floor affects the regeneration of the mussel by analyzing data from the Västerbotten County Board?s inventory of the freshwater pearl mussel. The results implied that fine material such as fine sediment and sand might be detrimental to regeneration whereas gravel and boulders and in particular stone seem to be beneficial.

As a member of the EU, Sweden has, in some cases, transferred the controlling rights to the Union. This means that the rules defined by the EU must be followed in all member countries, including Sweden. The European Agricultural policy constitutes the largest part of the EU's annual budget and is in contrast to many other areas fully funded at EU level. The last decade, many new regulations on chemicals and pesticides have been introduced which brought great changes and a lot of work throughout the Union, including Sweden. Sweden has always had a strict policy on chemicals and has been at the forefront when it comes to sustainable agriculture and environmental management.

The aim of this studyhas been to capture preschool children's strategies, when they include and exclude each other in play. My aim was also to find out how children choose to integrate into an already existing game. My questions were: What strategies are used by the children at the preschool when they want to exclude or include each other? How to integrate the children when they want to be involved in an ongoing game and how they will be received during the time of play? My theoretical starting points are from Vygotsky's theory of proximal development zone, and Michel Foucault's perspective on power, and also research on the subject.The empirical study was conducted using the observations at two preschools. The children I observed were between four to five years old.The results show that children used different strategies, and when the strategy did not work so the child could switch to another.

With a new digital world that runs parallel with our physical one, we are also facing a new type of architecture and new materials that this new architecture is built on. In this thesis I examine pixels and vectors, two of the digital materials used to create pictures. By approaching them as digital materials, I have mapped their different qualities, when and where one or the other is more or less applicable and the reason behind it. My main research question asked was the following: Are the (digital) materials challenged outside their primary fields of application, and in that case, in which way? With this question in mind, I carried out a semiotic picture analysis on four pictures, later on dividing them into four different categories, based on their different qualities and their ability to deliver information.

This thesis deals with non-wanted political parties e.g. right wing populism. How should a democracy handle these opinions? So far these parties have been neglected and not even considered as real parties. By excluding them from the debate and the political arena, media and more established parties have seen them merely as a threat than as democratic parties.