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Biogas in Sweden - Opportunities and challenges from a systems perspective

Popular Abstract in Swedish Biogas, som i huvudsak består av metan och koldioxid produceras när mikroorganismer bryter ned organiskt material utan tillgång till syre, så kallad rötning. I princip kan alla typer av organiskt material användas för att producera biogas men vanligast är till exempel avloppsslam, olika typer av avfall från hushåll och industrier, gödsel, grödor och odlingsrester. BiogAddressing today’s challenges of reducing our dependence on fossil fuels and related emissions of greenhouse gases requires measures such as increased energy efficiency and replacement of fossil energy carriers with renewable ones. Biogas is one of the fastest growing renewable energy sources in the world and the overarching purpose of the research presented in this doctoral thesis is to explore t

Array transducer for ultrasonic manipulation of particles

This paper presents the concept and initial work on a microfluidic platform for bead-based analysis of biological sample. The core technology in this project is ultrasonic manipulation and trapping of particle in array configurations by means of acoustic forces. The platform is ultimately aimed for parallel multistep bioassays performed on biochemically activated microbeads (or particles) using su

Density-functional exchange-correlation potentials and orbital eigenvalues for light atoms

Using accurate correlated wave functions calculated earlier by Bunge and by Larsson, we have constructed the Hohenberg-Kohn-Sham density functionals and exchange-correlation (ground-state) potentials and have obtained orbital energy eigenvalues for a number of light atoms by in principle exact numerical algorithms. While the uppermost occupied density-functional eigenvalue always gives an exact ex

Women, Witches and their Familiars: Exploring the Concept of Rural Modernism in Sylvia Townsend Warner and Mary Webb

This paper uses the framework of ecofeminism in its exploration of two rural modernist novels, Sylvia Townsend Warner’s Lolly Willowes (1926) and Mary Webb’s Precious Bane (1924). The development of ecocriticism and ecofeminism in the 1980s saw a proliferation of work on the relation between literature, gender and the natural environment (Glotfelty and Fromm, 1996; Gaard, 1993; Warren, 1997). The

Managing end user requirements in construction projects

Purpose The research presented is the initial part of a project with the aim of increasing the use of end-user requirement through out the construction process. This initial part maps how Swedish real estate companies manage end-user requirements and evaluate the outcome. Methodological approach The focus of the study was on methods for capturing and managing end-user requirements and for measur