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Träfflista för sökning "WFRF:(Quested D) srt2:(2005-2009)"

Sökning: WFRF:(Quested D) > (2005-2009)

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  • Cornwell, William K., et al. (författare)
  • Plant species traits are the predominant control on litter decomposition rates within biomes worldwide
  • 2008
  • Ingår i: Ecology Letters. - : Wiley. - 1461-023X .- 1461-0248. ; 11:10, s. 1065-1071
  • Tidskriftsartikel (refereegranskat)abstract
    • Worldwide decomposition rates depend both on climate and the legacy of plant functional traits as litter quality. To quantify the degree to which functional differentiation among species affects their litter decomposition rates, we brought together leaf trait and litter mass loss data for 818 species from 66 decomposition experiments on six continents. We show that: (i) the magnitude of species-driven differences is much larger than previously thought and greater than climate-driven variation; (ii) the decomposability of a species' litter is consistently correlated with that species' ecological strategy within different ecosystems globally, representing a new connection between whole plant carbon strategy and biogeochemical cycling. This connection between plant strategies and decomposability is crucial for both understanding vegetation-soil feedbacks, and for improving forecasts of the global carbon cycle.
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  • Ricci, E., et al. (författare)
  • Density, surface tension, and viscosity of CMSX-((R)) superalloy
  • 2007
  • Ingår i: International journal of thermophysics. - : Springer Science and Business Media LLC. - 0195-928X .- 1572-9567. ; 28:4, s. 1304-1321
  • Tidskriftsartikel (refereegranskat)abstract
    • The surface tension, density, and viscosity of the Ni-based superalloy CMSX-4((R)) have been determined in the temperature ranges of 1,650-1,850 K, 1,650-1,950 K, and 1,623-1,800 K, respectively. Each property has been measured in parallel by different techniques at different participating laboratories, and the results are compared with the aim to improve the reliability of data and to identify recommended values. The following relationships have been proposed: density-rho (T) [kg.m(-3)] = 7,876 - 1.23(T - 1,654 K); surface tension-gamma (T) [mN.m(-1)] = 1,773 - 0.56 (T - 1, 654 K); viscosity-eta (T) [mPa.s] = 8.36 - 1.82 x 10(-2)(T - 1,654 K). For a comparison, surface-tension measurements on the Al-88.6 at% Ni liquid alloy with the same Al-content as the CMSX-4((R)) alloy were also performed. In addition, the surface tension and density have been theoretically evaluated by different models, and subsequently compared with new experimental data as well as with those reported in the literature. The surface-tension experimental data for the liquid CMSX-4((R)) alloy were found to be close to that of the A1-88.6 at% Ni alloy which is consistent with results from the compound formation model (CFM).
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