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Sökning: WFRF:(Stephanson T)

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  • Bruhn, Jan G., et al. (författare)
  • Ecstasy analogues found in cacti
  • 2008
  • Ingår i: Journal of Psychoactive Drugs. - : Informa UK Limited. - 0279-1072 .- 2159-9777. ; 40:2, s. 219-222
  • Tidskriftsartikel (refereegranskat)abstract
    • Human interest in psychoactive phenethylamines is known from the use of mescaline-containing cacti and designer drugs such as Ecstasy. From the alkaloid composition of cacti we hypothesized that substances resembling Ecstasy might occur naturally. In this article we show that lophophine, homopiperonylamine and lobivine are new minor constituents of two cactus species, Lophophora williamsii (peyote) and Trichocereus pachanoi (San Pedro). This is the first report of putatively psychoactive phenethylamines besides mescaline in these cacti. A search for further biosynthetic analogues may provide new insights into the structure-activity relationships of mescaline. An intriguing question is whether the new natural compounds can be called "designer drugs."
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  • Tollmar, Konrad, et al. (författare)
  • VideoCafe - exploring mediaspaces in public places within organizations
  • 2001
  • Ingår i: Behavior and Information Technology. - : Informa UK Limited. - 0144-929X .- 1362-3001. ; 20, s. 101-110
  • Tidskriftsartikel (refereegranskat)abstract
    • This paper describes our studies of mediaspaces which are embedded within public places in organizations so as to examine the hypothesis that individuals might benefit even when working apart - from opportunities for light informal interaction. A set of full-scale prototypes were used and assessed over extensive periods of time. The informal observations and reflection in design of these places have been supplemented by formal studies. We found that great care needs to be taken when designing these places from an architectural point of view. For some of the places, we would like to suggest using architectural features when altering the room rather than technology. In other settings, the artful deployment of communication media might be more effective.
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  • Resultat 1-4 av 4

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