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This chapter describes various kinds of artificial light sources of interest to the photobiologist (natural light is described in separate chapters), starting with incandescent lamps and their properties, and continuing with gas discharge lamps, flashlamps, light-emitting diodes, and lasers. After a section on light filters, the chapter concludes with a treatment of monochromators, in which the mo

'Understanding the Arab World': This paper was presented at "Tempus Information Days" held in Stockholm, September 6-7 2006. The paper tackles the issue of misunderstanding the other and high lightens encounters between the Arab World and the West.

Practices in reading of family letters from the 19th century. Family, men and women, children, relations between the sexes.

Beskrivning ges av utveckling av analysuppställning för PIXE-analys, kombinerad med metod för analys av fluor. Vidareutveckling av spektrumevalueringsprogram, HEX, presenteras. Beskrivning av utförda svetsröskarakteriseringar ges. Resultat redovisas för följande belagda elektroder: OK 48.00, OK 38.65 samt OK 61.41. För sistnämnda, rostfria elektrod, presenteras procedur för bestämning av kroms val

How can qualitative and emotional aspects from users be mapped at the same time as they get something meaningful in return? This case study has developed the use of cultural probes [1] with a selection of ten families with small children in the Öresund region. The idea was to evoke thoughts about recreation and living for the probe users while providing information and inspiration to the scientist

Even though B-lymphocyte development is one of the best understood models for cell differentiation in the hematopoetic system, recent advances in cell sorting and functional genomics has increased this understanding further. This has suggested that already early lymphoid primed multipotent progenitor cells (LMPPs) express low levels of lymphoid restricted transcripts. The expression of these genes

The volumetric response of polymer gels on cosolute addition depends on the interaction of the polymer with the cosolute and can be used as a simple and sensitive way of elucidating these interactions. Here we report on DNA networks, prepared by crosslinking double-stranded DNA with ethylene glycol diglycidyl ether (EGDE); these have been investigated with respect to their swelling in aqueous solu

Oxidative stress, or the production of oxygen-centered free radicals, has been hypothesized as the major source of DNA damage that in turn can lead to altered genetic expression, disease, and aging of humans. Serum protein thiol levels in blood are a direct measure of the in vivo reduction/oxidation (redox) status in humans, because thiols react readily with oxygen-containing free radicals to form

The self-assembly behavior of a cationic surfactant (dodecyltrimethylammonium, DTA) with DNA as counterion in mixtures of water and n-alcohols (decanol, octanol, hexanol, butanol, and ethanol) was investigated. The phase diagrams were established and the different regions of the phase diagram characterized with respect to microstructure by H-2 NMR, small-angle X-ray scattering (SAXS), and other te

DNA-cationic liposome complexes as possible vehicles for gene delivery is currently an important issue. In this work, the interaction between DNA and thermodynamically stable, spontaneously formed, catanionic vesicles with a net positive charge is studied. A phase map was drawn for the aqueous system of DNA and positively charged vesicles, composed of CTAB (cetyltrimethylammonium bromide) and SOS