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Learning from failure: Research initiatives towards improving resilience of the Swedish railway system

This paper includes a brief description of some closely related ongoing research activities aiming at learning from failures in order to improve the resilience of the Swedish railway system. One of these activities includes the development of a method aiming at assessing the capability for restoring the service of the railway system after strains affecting its technical, and often highly interdepe

On leukocyte recruitment in endotoxemic liver injury

Leukocyte recruitment is a key feature of liver injury associated with endotoxemia and systemic inflammation. The aim of this thesis was to define the adhesive mechanisms underlying leukocyte endothelial cell interactions, and the therapeutic potential of interference with specific adhesion molecules in endotoxemic liver damage. Moreover, the causal relationship between leukocyte recruitment on on

Physical bounds on the partial realized gain

An antenna identity, derived from the forward scattering sum rule, shows that the partial realized gain of an antenna is related to the polarizability of the antenna structure. The partial realized gain contains the mismatch, directivity, efficiency, and polarization properties of the antenna. The antenna identity expresses how the performance depends on the electrical size and shape of the antenn

Från alpromantik till hembygdsromantik. Natursynen i Sverige från 1885 till 1915, speglad i Svenska Turistföreningens årsskrifter och Nils Holgerssons underbara resa genom Sverige

The purpose of this dissertation is to analyse the changing views of nature from 1885 to 1915 as Sweden experienced possibly the greatest transformation in its history. An examination of the Swedish Touring Club's Annual Review serves to illustrate these changes. These reviews have under the slogan 'Know Your Country', been published since 1886. A parallel comparison can be traced through interpre

Phase Equilibria and Structures of Oppositely Charged Polymers and Surfactants in Water

Popular Abstract in Swedish Polymerer och tensider är två mycket vanliga molekylslag som vi ofta stöter på i vårt vardagliga liv. Polymerer är extremt långa kedjor sammansatta av tusentals repeterande enheter. De förekommer både som hårda material (t ex plast) och i lösning (t ex målarfärg). Det finns syntetiska polymerer, såsom nylon och polyeten, och det finns biologiska polymerer, t ex cellulosA new approach to the study of aqueous mixtures of oppositely charged polymers and surfactants has been introduced. Pure polyion-surfactant ion complex salts have been synthesized and used as the point of departure. The elimination of the simple ions reduces the number of components in the mixtures, thus greatly simplifying the system. By mixing the complex salt with either the polyelectrolyte or