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  • 1
    Electronic Resource
    Electronic Resource
    Polyamine-mediated control of mammalian S-adenosyl-L-methionine decarboxylase expression: Effects on the content and translational efficiency of the mRNA
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 160 (1989), S. 1196-1202 
    Details
    ISSN: 0006-291X
    Keywords: [abr] AdoMet; S-adenosyl-L-methionine ; [abr] DFMO; 2-difluoromethylornithine ; [abr] PAGE; polyacrylamidegel electrophoresis ; [abr] SDS; sodium dodecyl sulfate
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0006-291X(89)80130-5
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  • 2
    Electronic Resource
    Electronic Resource
    Polyamine-mediated control of mammalian S-adenosyl-L-methionine decarboxylase expression: Effects on the content and translational efficiency of the mRNA
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 160 (1989), S. 1196-1202 
    Details
    ISSN: 0006-291X
    Keywords: [abr] AdoMet; S-adenosyl-L-methionine ; [abr] DFMO; 2-difluoromethylornithine ; [abr] PAGE; polyacrylamidegel electrophoresis ; [abr] SDS; sodium dodecyl sulfate
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0006-291X(89)80130-5
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  • 3
    Electronic Resource
    Electronic Resource
    Resource limitation during early ontogeny: constraints induced by growth capacity in larval and juvenile fish (2000)
    Springer
    Oecologia 122 (2000), S. 459-469 
    Details
    ISSN: 1432-1939
    Keywords: Key words Resource limitation ; Larvae and juvenile fish ; Attack rate ; Maximum consumption rate ; Maximum growth rate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The presence of and mechanisms behind density-dependent growth and resource limitation in larval and juvenile stages of organisms with high mortality such as fish are much debated. We compare observed consumption and growth rates with maximum consumption and growth rates to study the extent of resource limitation in young-of-the-year (YOY) roach (Rutilus rutilus) and perch (Perca fluviatilis). Diet, habitat use, consumption rate and growth rate were measured under varying YOY fish densities over 2 years in four lakes. In the first year, YOY roach and perch were studied under allopatric conditions. Experimental addition of perch roe in the second year also allowed study of YOY of the two species under sympatric conditions in two of the lakes. The diet of YOY roach was dominated by cladoceran zooplankton and YOY roach habitat use was restricted to the shore region in both years. This restricted habitat use did not involve any cost in foraging gain in the first year as consumption and growth rates were very close to maximum rates. During the second year, when the two species coexisted, resources were limited in late season, more so in the littoral than in the pelagic habitat in one lake while the reverse was the case in the other lake. The diet of YOY perch was also dominated by zooplankton, and with increasing perch size the proportion of macroinvertebrate prey in the diet increased. After hatching, YOY perch first utilized the pelagic habitat restricting their habitat use to the shore after 1 to several weeks in the pelagic zone. During the larval period, perch were not resource limited whereas juvenile perch were resource limited in both years. The fact that YOY perch were more resource limited than YOY roach was related to the higher handling capacity and lower attack rate of perch relative to roach, rendering perch more prone to resource limitation. Estimates of resource limitation based on consumption rates and growth rates yielded similar results. This supports the adequacy of our approach to measure resource limitation and suggests that this method is useful for studying resource limitation in organisms with indeterminate growth. Our results support the view that density-dependent growth is rare in larval stages. We suggest that density-dependent growth was absent because larval perch and roach were feeding at maximum levels over a wide range of larvae densities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004420050967
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  • 4
    Electronic Resource
    Electronic Resource
    Engineering geology of Stockholm, Sweden (1998)
    Springer
    Bulletin of engineering geology and the environment 57 (1998), S. 79-90 
    Details
    ISSN: 1435-9537
    Keywords: Key words Tunnel ; Underground excavation ; Infrastructure ; Bedrock quality ; 3D databases ; Stockholm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Résumé Le substratum de la ville de Stockholm fournit un excellent matériau pour la construction. L'article décrit la géologie du secteur et donne des exemples concernant essentiellement des infrastructures, des constructions souterraines et insiste sur l'attention apportée aux considérations environnementales. Il engage la discussion sur la recherche qui a été entreprise pour mettre en place des vases de données géologiques et géotechniques dans le cadre d'un système souple et accessible, qui permette aux maître d'ouvrages d'utiliser au mieux les ressources locales tout en minimisant les inconvénients pour l'environnement.
    Notes: Abstract  The bedrock in the Stockholm area provides an excellent material for construction. The paper describes the geology of the area and provides case histories, mainly related to infrastructure development, illustrating the use of underground construction and the importance given to environmental considerations. It discusses the research being undertaken to establish data bases which will record the geological and geotechnical information being obtained, in a flexible and accessible system, in order that developers may maximise the local resources and minimise adverse effects on the environment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100640050024
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