The content of the European research project MAnaging Speeds of Traffic on European Roads (MASTER) is presented. Speed management is described as a two-step process where target speeds for different kinds of roads are determined first, and then various measures and tools are applied in order to adopt such speed. Current practice and main problems in speed management are described. The various impa

The present report gives a general discussion of typical behaviour and modelling concepts used in soil mechanics. Characteristic mechanical features for friction materials, such as stress state dependency, nonlinearity, dilation and anisotropy, are discussed as well as the factors affecting such features. A short overview of existing model concepts used in soil mechanics is presented. Various appr

"Zalmoxis" is a dramatic poem in which each character autonomously structures his own discursive lyric, expressing thus a variety of concepts over the spiritual foundation of the Dacians. The charm of each nuance in part relates in the last instance, the mode in which the author understands the proper structure of the actual dramatic perspective above the revolt of our non-Latin foundation. The ne

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On various possble relations between pictures accompanied by verbal text and the other way round.

n this paper a new model, tailor-made for nutrient deficient aerobic COD removal, is presented. The Activated Sludge Model No. 1 is chosen as a basis for model development. The original model is extended to include (1) phosphorus state variables; (2) phosphorus and nitrogen limited heterotrophic growth; (3) additional 'luxury' uptake of phosphorus and (4) a separate active biomass component to mod

Popular Abstract in Swedish Två av de viktigaste polyaminerna påträffades redan i slutet av 1600-talet, som kristaller i tjursperma och har därför fått namnen spermin och spermidin. Dessa aminer bildas från en annan substans, putrescin, som först isolerades från ruttnande kött. Namnet putrescin kommer från engelskans putrefaction, som betyder förruttnelse. Polyaminer, som kemiskt sett är positivt The polyamines putrescine, spermidine and spermine are essential for cell growth and differentiation. The biosynthesis of polyamines are tightly regulated by feedback mechanisms involving two enzymes, namely ornithine decarboxylase (ODC) and S-adenosylmethionine decarboxylase (AdoMetDC). This thesis deals with the mechanisms behind the polyamine-mediated feedback control of these enzymes. The poly