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Persistent organic pollutants in the atmosphere - spatial and temporal variations

Popular Abstract in Swedish Avhandlingen bygger på en studie av halter av stabila organiska miljögifter (PCB) i luften, i nederbörd och i jord. Studien har utförts vid 11 provtagnings platser i Skåne. Vidare behandlas global transport av stabila miljögifter i avhandlingen.In these thesis I have studied the spatial and temporal variations of PCBs in the atmosphere and in precipitation in southern Sweden. Further, soil-air exchange processes of PCBs were investigated. Finally, the long-range transport of PCBs and DDT was studied in the Baltic Sea region and in a tropical vs. a temporal region. On the regional scale there were significant differences in PCB concentrat

Artificial life goes 'in silico'

The paper reviews a number of cellular neural network implementations on a field-programmable gate-array. It illustrates experimentally, how these implementations can be used to measure from images or to create dynamic, autonomous processes that facilitate measurements within topographic maps. Applications range from image understanding to robot navigation

The Mechanism of Market Driving with a Corporate Brand - The Case of a Global Retailer

The purpose of this thesis has been to analyse the mechanism of the market driving approach carried out by a global organisation with a corporate brand. Market driving is a new organisational approach to strategy that lacks a solid theoretical framework, but constitutes a reality of global firms such as IKEA, The Body Shop, Benetton, Dell, Hennes and Mauritz, Starbucks. In the literature, the mark

Synthesis, conformational analysis, and biological evaluation of peptides from E. coli P pilus proteins

Many bacteria utilize hairlike protein appendages (pili) to attach themselves to mucosal cell surfaces in the host organism. The pilus is assembled from protein subunits synthesized inside the bacteria and transported to the outer cell wall for incorporation into the growing pilus. During the transport the pilus proteins are attached to a chaperone that protects them from aggregation and proteloty

A measure of dependence between two compositions

A composition is a vector of positive components summing to a constant. We consider the problem of describing the correlation between two compo- sitions. Using a bicompositional Dirichlet distribution, we calculate a joint correlation coefficient, based on the concept of information gain, between two compositions. Numerical values of the joint correlation coefficient are calcu- lated for compositi