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Popular Abstract in Swedish Magnetresonanstomografi (MRT) är en metod för framställning av bilder av kroppen och av sjukliga förändringar i kroppen. När metoden introducerades ansågs den utomordentligt goda inbyggda vävnadskontrasten vara tillräcklig för att särskilja olika sjukliga förändringar, speciellt i hjärnan. Det har emellertid visat sig att förmågan att upptäcka sjukliga förändringar är oAims of the study The aims of this study using Gadodiamide injection were to investigate: · Whether Gadodiamide injection was comparable to Gd-DTPA for the enhancement of CNS lesions. · The contrast effect at different field strengths. · The effective time-window for the enhancement of blood-brain barrier damage. · The relations between the concentration of contrast agent and enhancement in p

Popular Abstract in Swedish Genetisk påverkan i ledgångsreumatism Ett väl fungerande immunsystem är en förutsättning för kroppens kamp mot diverse sjukdomar orsakade av t ex virus och bakterier. En grundläggande egenskap hos immunsystemet är dess förmåga att skilja på vad som är kroppens egna celler och molekyler och vad som är främmande. Ibland fungerar inte denna diskriminering som den ska och In this thesis the role of major histocompatibility complex (Mhc) class II molecules in development of autoimmune disease such as rheumatoid arthritis (RA), was studied. By combining an experimental model for RA, collagen type II induced arthritis (CIA), with molecular biology methods the importance of polymorphism in Mhc class II genes for disease development was investigated. The Mhc region con

Supportive legislation and improving technologies are making bioenergy an increasingly attractive energy source for Europe both economically and environmentally. However, abundant resources remain untapped across many member states in the European Union (EU). The Bioenergy Network of Excellence (NoE) entitled Overcoming Barriers to Bioenergy in Europe is charged with the task to identify critical

Cationic polymers in the form of anion-exchange membranes (AEMs) may enable a route towards low platinum or even platinum-free alkaline membrane fuel cells with the potential to oxidize more complex fuels than hydrogen and methanol [1-4]. The main challenges for the AEMs are currently to enhance the alkaline stability of the cationic group and to improve the ion conductivity. In this context, ther

Popular Abstract in Swedish I detta arbete har utvecklats automatiserade system för analys av miljöprover och av biologiska material. Två olika membranbaserade provupparbetningsmetodiker har använts för provförberedelse tillsammans med olika typer av kromatografi för själva analysen. Dessa principer har applicerats på tre olika tillämpningsområden. Extraktion med vätskemembran har kopplats med etThe main objective of this work was to construct practical analytical systems for the analysis of environmental and biological samples, using membrane-based techniques for sample pretreatment and chromatography for final analysis. Two types of membrane processes have been applied, with emphasis on automation. The supported liquid membrane (SLM) extraction was carried out in an automated continuou

How can qualitative, ethnographic and emotional aspects from probe users be mapped at the same time as they get something meaningful in return? The emphasis is here on intellectual rewards during probe work rather than future good designs that in a long term perspective can be beneficial for the probe user. This case study has elaborated the traditional use of cultural probes [1] with a selection

Critical infrastructures provide society with services that are essential for its functioning and extensive disruptions of these give rise to large societal consequences. Vulnerability analysis gives important decision information concerning improving their ability to withstand strains. To analyze vulnerabilities in infrastructures models for estimating consequences due to failures are needed. Con

Based on a case study of a telecom company’s transition towards more software value in their products, we describe and discuss SCM issues related to when traditional manufacturers go from a “hardware focus” to a mixed product configuration. Although software supply chain is not much discussed in logistics, it seems that logistics/SCM frameworks also fit many software supply issues. A specific soft

Reduction of energy use constitutes as an important measure for climate change mitigation. Buildings today account for 40% of the world’s primary energy use and 24% of the greenhouse gas emissions [International Energy Agency (IEA) 2011]0. The concept of passive houses is one of many necessary measures for climate change mitigation. To reach the passive house ambition in cold climates, increased t

A 7th order polyphase G/sub -m/C IF filter with automatic frequency tuning, implemented in a 0.35/spl mu/m CMOS process, is presented. The filter has a center frequency of 3MHz and a passband of 1MHz. The image band rejection is higher than 57dB, the stop band attenuation is at least 40dB. The in-band spurious free dynamic range is around 53dB. On-chip automatic frequency tuning provides more than