Asymptotically flat spaces are widely studied because it is one natural way of describing an isolated system in general relativity. In this thesis we study what happens to the Lanczos potential at spacelike infinity in such spacetimes. By transformations of the Weyl-Lanczos equation, we derive expressions for the limiting equations on both the timelike unit hyperboloid, and the timelike unit cylinder. Finally the Newman-Penrose formalism is used to get a component version of the equations..

Disinfection methods for drinking-water produced at the two water works of Stockholm Water Co are compared in this study. Three different nethods are compared; disinfection with chlorine gas, disinfection with sodium hypochlorite and disinfection with UV-light and monochloramine. The method used is Life cycle assessment, LCA. LCA is defined as the compilation and evaluation of the inputs, outputs and potential environmental impact of a product system shroughout its life cycle. The environmental burden is compared for the three different disinfection methods.

The electric vehicle market has potential to contribute to Sweden?s national goal to have a fossil fuel independent transport sector by 2030. However, the market answers to a lot of challenges making it difficult for the market to fully reach its potential. The volume of electric vehicles has seen a steady increase during the last year (2012), although many of these vehicles are mostly for PR purposes or bought by the public sector that wants to lead by example. Still, barriers in the form of high purchase costs, an anxiety for the limited battery capacity and the lack of standardisation are some of the problems that the market is struggling to solve.

This master thesis examines the development of the two earlier independent IR protocols Z39.50 and SR (Search and Retrieve, ISO 10162/10163), now Z39.50/SR, from the beginning of the 80s to 1996 and their functionality in the client/server environment.Z39.50 applications in library systems will allow easy access to information regardless of platform or location. The use of Z39.50 will create a new user environment. Almost all the library systems of the market support the Z39.50 and surprisingly the use of it in Sweden lied on a very low leve! in 1996. This thesis was followed-up by an interview and a questioner among the Swedish Z39.50 users. They could see a huge potential of development concerning the future IR process.

It is important to investigate the potential of biological control measures in agricul-ture, especially where economic issues restrict the use of expensive inputs or when there are environmental concerns about toxicity of agrochemicals. The bacterium Bacillus subtilis has proved promising as a biocontrol agent (BCA) in suppressing various plant diseases and it has also been shown to promote plant growth in certain cases. During this study, the effect of B. subtilis on Fusarium wilt (caused by the fungus Fusarium oxysporum) on tomatoes, as well as its effect on the earthworm species Pontoscolex corethrurus was investigated. Furthermore, the combined ef-fect of the BCA with P.

Ett använt begrepp när det gäller tonårstjejer och sexualitet är sexuell agens, att handla efter egna beslut. Avsikten med denna studie är att nå en ökad förståelse av vad som påverkar utvecklingen av sexuell agens hos tonårstjejer, utifrån berättelser av två professioner vid ungdomsmottagningar. Syftet är också att göra en kritisk analys och en sociologisk teoretisering av upplevelsen av sexuell agens samt utifrån ett maktperspektiv utreda dess disciplinerande och frigörande potential.Tidigare forskning visar främst att det finns en avsaknad av lust och kunskap hos tonårstjejer samt att deras förmåga att ta självständiga beslut i relation till sexualitet är avhängt deras agens. I denna studie genomfördes kvalitativa intervjuer med barnmorskor och kuratorer vid ungdomsmottagningar. Tematisk analysmetod användes vid tolkningsförfarandet.

In this report focus is put on the combustion process at a cement plant. Combustion is the heart of the cement making process and absolutely crucial to have under full control and well optimized. The fuel is put into the process through a burner pipe and this burner pipe is modified to reach a more efficient combustion. The primary target is to enable burning of heterogeneous alternative fuels and increase the production level. Other positive effects from this type of optimization is lowered specific fuel consumption and lowered CO2 emissions. A redundant burner is chosen for the project and overall the project steps are the following: 1. Installing a Jet air nozzle ring in a way so it can move both axially and radially due to temperature changes. 2.

Den här rapporten innehåller vårt arbete om Kinect, en ny styrenhet lanserad av Microsoft. I den här rapporten så svarar vi på frågor som t ex: hur det är att programmera till Kinect, hur tekniken bakom Kinect fungerar, hur länge man orkar spela med Kinect och om ett klassiskt spel blir roligare att spela med Kinect. För att kunna svara på de här frågorna så har vi utvecklat kontroller till ett PC-spel, vi har även skrivit några frågor som vi sedan lät användare svara på efter dem testat Kinect. Vår slutsats är att programmering till Kinect är relativt enkel och har stor potential. Dessutom kan det vara svårt att anpassa klassiska spel till Kinect för att öka upplevelsen..

Sweden has a natural gas grid extending along the west coast, from Trelleborg to Stenungsund. There are also several smaller local networks where a planned natural gas pipeline from Skutskär to Hofors prompted the need for a comprehensive study. This study examines the linkages that exist in terms of technology and market of natural gas and biogas in Sweden. Sweden has set high targets for the future with ambition to become independent of coal and oil as energy sources. Since 1985, a part of the solution has been import of Danish natural gas.

Kevin Roberts has extended the comprehension of strong consumer brands to a higher level where loyalty beyond reason is established. He calls this new status Lovemarks. As the concept of Lovemark has only been applied in B2C markets, this thesis is directed to find out the applicability of Lovemarks in B2B context. In order to fulfill the research purpose, three main questions are answered based on a cross-sectional research approach: What role do intangible factors play in B2B branding? Is the idea of B2C Lovemarks transferable to B2B context? How should a B2B Lovemark be characterized? The results of the qualitative interviews indicate insights of high investment and involvement, integrated brand communication, balance between function versus emotion, brand?s trustworthy personality, customer partnership, and finally, the potential establishment of B2B Lovemarks.

The aim of this project was to improve taste of a liquid food product, comprising extremelybitter and unpalatable amino acids and one unrevealed ingredient. The amino acids were Lleucine,L-isoleucine, L-valine, L-threonine and L-lysine monohydrochloride. Experimentaldesign was set up as a screening of water solutions comprising these ingredients (called BCAAsolutions) and added ingredients with potential to improve flavour. BCAA solution withingredients that were potential bitterness suppressors were evaluated in flavour, bitternessand/or palatability. Solutions of separate amino acids were also studied.

In this study I have examined how narrative techniques can be used to promote the reading value and readability in information. My focus has been on the communication-agency Mandoly?s information-brochure which function is to inform other companies about their own potential for development in collaboration with Mandoly. The purpose with this study is to examine how it is possible to increase the reading value in order to engage the target group. In my study I have used four methods: analysis of Mandoly?s old information-brochure, literature studies, a qualitative interview, and an user test.

The ambition of this paper is to study the construction of the categorization between ?us? and ?them? in a religious minority, represented by Jehovah?s Witnesses and a nationalist political party, represented by the Swedish Democrats. This will be done by a discursive psychology analysis of their official publications on each group?s website. By a deductive study using Henri Tajfel?s Social Identity Theory trying to disclose the psychological processes; social categorization, social identity, social comparison and psychological distinctiveness.

Today, the TV vignette is considered an embellishment to a TV program, despite its broad audiences and unique appearance. We wanted to find out if the television vignette has some common features and conventions but also find out how it relates to genre.We used a case study where we analyzed ten vignettes that we chose from certain criteria. We used a model based on image analysis that we modified to fit our needs. The main parts of each model consisted semiotics, imagery, dramaturgy and sound.We also made a couple of interviews with people who are active or used to work with vignettes. As a result we discovered that the television vignettes consist of certain conventions and that the vignette will not be considered as an independent genre, until the public has accepted it.

The electric vehicle market has potential to contribute to Sweden?s national goal to have a fossil fuel independent transport sector by 2030. However, the market answers to a lot of challenges making it difficult for the market to fully reach its potential. The volume of electric vehicles has seen a steady increase during the last year (2012), although many of these vehicles are mostly for PR purposes or bought by the public sector that wants to lead by example. Still, barriers in the form of high purchase costs, an anxiety for the limited battery capacity and the lack of standardisation are some of the problems that the market is struggling to solve.