Photobiology -- the science of light and life -- begins with basic principles and the physics of light and continues with general photobiological research methods, such as generation of light, measurement of light, and action spectroscopy. In an interdisciplinary way, it then treats how organisms tune their pigments and structures to the wavelength components of light, and how light is registered

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Kärreman, M., Moberg, K. & Svensson C. (2006) Fallstudier av styrelsearbetet i sex mindre företag Moberg, K. & Svensson, C. (2008) Styrelsearbete i fyra små företag - betydelsen av klara ägarförväntningar. Rapport från programmet för bolagsstyrning. Institutet för Ekonomisk Forskning. Ekonomihögskolan. Lunds universitet. Kärreman, M. & Svensson, C. (2008) Enkätundersökning om mindre o

The terminal investment hypothesis predicts that individuals should invest more in their present reproduction if they are less likely to survive to future reproductive events. Infections, which reduce viability, may be used by individuals as a cue of a diminishing residual reproductive value and could therefore theoretically trigger an intensification of breeding effort. We tested this hypothesis

In this thesis, the nutritional regulation and clinical significance of selenoprotein P (SeP) in human plasma of healthy and diseased subjects was investigated. For the analysis of SeP, a radioimmunoassay was developed using polyclonal antibodies. The epitope recognized by the antibodies was apparently stable after storage of plasma in the frozen state for years. In the studies included, the coeff

The ever growing demand for mobile communications is pushing the technology towards its very limits. In addition, the current technology is optimized for circuit-switched voice rather than bandwidth hungry services such as wireless Internet and multimedia applications. The third generation mobile systems that will be introduced in the near future are designed specifically to address these limitati

Accessibility throughout society has been gaining interest at the international as well as the national level. According to Swedish legislation, public environments should be accessible to all citizens by the year 2010. This paper focuses on older pedestrians, and aims at investigating how accessibility is dealt with and carried out in the municipal process of traffic planning: “accessibility in p

Product codes, due to their relatively large minimum distance, are often seen as a natural solution for applications requiring low error floors. In this paper, we show by means of an ensemble weight enumerator analysis that the minimum distance multiplicities of product codes are much higher than those obtainable by other generalized LDPC (GLDPC) constructions employing the same component codes. W

A speech data packet loss concealment algorithm based on pitch period repetition is presented and a novel low complexity method to refine a pitch period estimate is introduced. Objective performance measurements show that this pitch refinement improves the quality of packet loss concealment. Hardware-software codesign techniques have been investigated to implement the algorithm. Using a coprocesso