Treatment wetlands been showed efficient for reducing pollutant in waste water. In Lajeado ? RS, Brazil the landfill has poor leachate water treatment. It is necessary to supplement the treatment plant because they need to reduce BOD, COD and nitrate of the water going to recipient. A subsurface flow wetland (SSF) can be a good choice.  In order to be able to design an efficient SSF it is important to understand how the grain sizes of a substrate affect the reducing of pollutants in waste water.

A future expansion of wind power in the Nordic power system makes the balancing for the transmission system operator Svenska Kraftnät (SvK) more complicated. Up to the hour of delivery the balance responsible parties? (BRP) makes prognoses and plans, for consumption and production, to help maintain the balance in the electrical grid. How well this is accomplished is affected by the setup of the market design. Therefore SvK has proposed the following possible changes in market design: Increase the imbalance costsIntensify the regulation of imbalancesIncrease the temporal resolution on the different marketsPresent the prices for balancing power in real-timeModify the balancing market to simplify auction of consumption bidsA mapping over the BRPs? processes within planning and trading on the day-ahead, intra-day, and the balancing market has been performed in this thesis.

BT is a global company within the lift truck industry. The main office is located in Mjölby. In Europe all sales and service activities are carried out by fully owned sales companies. I North America, BT RAYMOND develop and distribute trucks under a different brand. For the rest of the world BT works together with a distributor network, most of them are fully independent others BT has a small ownership in.

In today?s fast growing and closely connected society, a reliable and energy efficient transportation system is more than ever desirable. Nowadays the significant part of the transportation sector?s energy demand is supplied by fossil fuels.Improving energy efficiency in combustion engines will result in reduction of fuel consumption and CO2 emissions. A modern internal combustion engine has an efficiency of 30-45 %, where the most energy loss occurs as result of heat losses in the exhaust and cooling systems.

I studien studeras hur komplexiteten kring sociala medier kan studeras, samt pa? vilket sa?tt sociala na?tverk a?r relaterade till na?tverken i sociala medier och hur det pa?verkar konsumenterna. Syftet med studien a?r att underso?ka de sociala medierna i fo?rha?llande till de sociala na?tverken med fokus pa? konsumentbeteende och da?rigenom skapa en generell modell som fo?rklarar problematiken. Studien bygger pa? en litteraturstudie som i fo?rsta hand sammansta?llts av artiklar med fokus pa? a?mnesomra?dena sociala na?tverk, elektroniska sociala na?tverk och sociala medier. En enka?tunderso?kning gjordes fo?r att sammansta?lla konsumenters a?sikter om a?mnesomra?dena, i syfte att tillslut utmynna i en analys och diskussion. Det ga?r att konstatera att sociala medier har vidgat det sociala na?tverket fo?r den enskilde konsumenten. Detta resulterar i att den enskilde konsumenten nu kan komma i kontakt med fler akto?rer och andra konsumenter som i ma?nga fall kan vara oka?nda.

The aim of this Master?s thesis is to examine the environmental scanning by the employees and politicians at the central administration at the County Council of Kalmar län. The background of the study is the closing of the administration library in January 2003, which gave more tasks to the hospital libraries of the County Council.The main questions of this study concerns the information needs of the employees and politicians, what electronic sources they prefer to use to satisfy those needs and if they are experiencing a need for more support and help, from a librarian or by the development of a common catalogue of hyperlinks. All 104 persons in the population were asked to answer a questionnaire on the Intranet. The task was performed by 60 persons.

The aims of the following project has beento make a proposition how to create aspecific kind of transformer. Thefollowing report evaluates the differentimportant variables and contains asuggestion for a possible design. Intheory it's an ordinary transformer that'ssuppose to transform electrical effect toa high voltage line. The design of thetransformer is using an already existingcurrent transformer design and is adjustedto work for it's specific purpose. Theproject also contains the developing of atransformer simulation model that will beused to evaluate and optimize thedimensions of the resulting transformer..

Shock absorber units play a key role in establishing the driving dynamics and performance of automobiles. Öhlins Racing has manufactured high-tech automotive shock absorbers for over 30 years. Öhlins Racing?s advanced technology has contributed to over 200 world championships in automobile racing. Öhlin?s manufacturing process has long utilized automated fluid filling equipment during the final shock absorber unit assembly stage. The filling process consists of vacuum pumping the shock absorber unit and subsequent transfer of fluid. Vacuum pumping is necessary to remove residual air from the shock absorber unit prior to initiating the liquid filling stage. The presence of undesirable gases drastically compromises the performance of a shock absorber. The filling degree, defined as the final ratio of air to oil, is determined by the specific filling protocol as well as the specific equipment utilized.The current investigation aims to develop a viable technique to accurately determine residual air content in shock absorber units. If the filling degree can be appropriately quantified for a specific manufacturing process, then the air/oil ratio may be quantitatively related to shock absorber performance. The utilized measurement method must be completely integrated into the manufacturing process to guarantee shock absorber performance specifications according to the manufacturer?s standards. By utilizing the measurement method developed in this work, the manufacturing process, manufacturing equipment and product specifications can all be tailored to provide improved filling conditions.The developed measurement method provides accurate quantification of the filling degree under a wide range of processing conditions. The method establishes the relative quantity of air in the shock absorber unit by performing in-situ compressibility tests. The fill ratio can be controlled and varied by manipulating the vacuum pressure exerted during the filling process. Performance tests, however, indicate no correlation between filling degree and unit performance..

Background:IT development has in recent decades been fast progressing. In Sweden many schools have begun to invest in IT and new technologies. What happens at the schools that are investing in IT equipment and modern technology?Purpose:The purpose of this study is to elucidate the conditions for and the success factors and barriers that principals and teachers will experience in IT. Principals' experiences are complemented and mirrored against the teachers.

This two years master?s thesis in Library and Information Science examines book reviews and articles aboutbooks and authorship in media directed to children between the ages of 8 and 14. The aim is to increase knowledgeof children?s reading choices and view of reading. This is motivated by the decrease in literacy and sparetime reading among Swedish children and adolescents.

Denna studie avser att ta reda på om någon förändrad effekt kan fås gällande bränsleförbrukning och emissioner då dieselolja strömmar igenom ett magnetiskt fält innan det förbränns i en dieselmotor som driver en generator. Utrustningen som ger upphov till magnetfältet har tillhandahållits av ett kommersiellt företag. Studien består av två delar, en teoretisk del och en praktisk del. I den teoretiska delen presenteras tidigare vetenskapliga studier inom ämnet samt hur tillverkaren av utrustningen menar att tekniken fungerar. I den praktiska delen har tester gällande rökgasemissioner och bränsleförbrukning gjorts.

The aims of the following project has beento make a proposition how to create aspecific kind of transformer. Thefollowing report evaluates the differentimportant variables and contains asuggestion for a possible design. Intheory it's an ordinary transformer that'ssuppose to transform electrical effect toa high voltage line. The design of thetransformer is using an already existingcurrent transformer design and is adjustedto work for it's specific purpose. Theproject also contains the developing of atransformer simulation model that will beused to evaluate and optimize thedimensions of the resulting transformer..

The intention of this final thesis is to examine how to create a schoolyard that inspires children at the age of 6 ? 12 years to play and give them possibility to develop. To get a lot of knowledge in this subject, I have combined studies of literature with practical studies at Hosjöskolan in Falun. During my practical studies I have done interviews, walks in the area with the children and visited other schoolyards. I have based a design proposal for the schoolyard of Hosjöskolan on these studies.

The number of wireless networks has increased rapidly among both home users and companies in just a few years. That has brought a lot of good things with it, for example the possibility to connect wireless equipment to the network or Internet from an arbitrary position within range of the accesspoint. But since the transmissions take place through the air some new security risks appear. It?s difficult to restrict the signals to a specific space and thereby a lot easier for unauthorized to eavesdrop or disturb the signals compared to a traditional wired network.

VBG Produkter AB is a process-orientated company that develops, manufactures and markets trailer couplings with belonging coupling equipment, protection equipment against skidding and stands for wagon-bridge for heavy vehicles. The company feels that their set-up time in production for couplings is not at an acceptable level. Due to high demands of customer oriented production the intermediate stock level of included products within the assembly of couplings has gradually increased which has resulted in high inventory holding costs. VBG Produkter applies Kanban in their production, therefore it is important to produce exactly the necessary amount and avoid overproduction. The objective of this project is to suggest appropriate solutions so that VBG Produkter is able to reduce their set-up time in assembly of couplings, by identifying internal and external set-up time for the chosen process bushing cell.