Filetype
Using two-pulse photon echo excitation a strong resonance in the measured homogeneous dephasing time as a function of magnetic field is observed in the H-3(4)-D-1(2) transition of Pr3+:YAlO3. The resonance could only be observed at low excitation energies since it otherwise was masked by excitation intensity dependent extra dephasing processes in the crystal. Thus intensity dependent dephasing pro
[abstract missing]
Popular Abstract in Swedish Markfosfor och mångfald av växter i svenska gräsmarker – en populärvetenskaplig sammanfattning Olika typer av gräsmarkshabitat innehåller en stor och viktig del av mångfalden av växtarter i Skandinavien och i norra Europa. En stor del av arterna är knutna till kulturlandskapet och des's äldre hävdformer. Förändringar i användning och skötsel av gräsmarkerna under detThe semi-natural grassland habitats contain an important part of the plant diversity in Europe. Changes in farming practices have lead to drastic decreases in plant species richness. The aim of the present thesis is to contribute to the knowledge about mechanisms governing the plant species richness in grasslands with emphasis on soil nutrients. Most species rich grasslands are found on soils with
The damage caused by the worldwide increase in natural disasters is staggering, with the poor and marginalised slum communities being the most vulnerable. This paper analyses the key variables and their causal relations underlying the complex system of risk and disaster occurrence in slum areas in El Salvador. Slum dwellers’ views and knowledge are the focus of this inquiry. A better understanding
A growing body of studies emphasizes the discovery of opportunities and the decision to exploit them as the essence of entrepreneurial activity. Following this stream of research, we present a study of the influence of entrepreneurs’ career experience and career motives on two alternative modes of decision making logic; causation and effectuation. Causal reasoning is a process that rests on logic
