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Träfflista för sökning "WFRF:(Tosti S) srt2:(2000-2004)"

Sökning: WFRF:(Tosti S) > (2000-2004)

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  • Colarieti-Tosti, M., et al. (författare)
  • Crystal field levels in lanthanide systems
  • 2001
  • Ingår i: Journal of Magnetism and Magnetic Materials. - 0304-8853 .- 1873-4766. ; 226-230:Part 1, s. 1027-1028
  • Tidskriftsartikel (refereegranskat)abstract
    • Crystalfieldlevels in lanthanide compounds have been calculated by first-principles theory, combining the strength of the standard model for rare earths in treating the localized 4f electrons and the power of Density Functional Theory in describing the, weakly correlated, delocalized, electrons. The stability of our calculations has been checked against changes of the constraints in the Full Potential-LMTO implementation. The assumption of weak 4f–4f inter-atomic interactions has also been checked by means of supercell calculations. Suggestions for the treatment of magnetic systems on a similar basis are given.
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  • Wilkinson, JD, et al. (författare)
  • Monitoring levels of preservative sensitivity in Europe - A 10-year overview (1991-2000)
  • 2002
  • Ingår i: Contact Dermatitis. - : Wiley. - 0105-1873. ; 46:4, s. 207-210
  • Tidskriftsartikel (refereegranskat)abstract
    • A 10-year multicentre analysis of the frequency of sensitivity to common preservatives collected in 16 centres in 11 countries has shown stable but persisting high levels of sensitivity to formaldehyde and 5-chloro-2-methyl-4-isothiazolin-3-one + 2-methyl-4-isothiazolin-3-one (MCI/MI). It has also revealed a significant increase in the level of reactivity to methyldibromoglutaronitrile (MDBGN) from 0.7% in 1991 to 3.5% in 2000. The current high level of sensitivity to MDBGN requires an urgent safety re-evaluation and risk assessment update along with consideration of immediate lowering of use concentrations, especially in leave-on products.
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  • Colarieti-Tosti, Massimiliano, et al. (författare)
  • First-principles theory of intermediate-valence f-electron systems
  • 2004
  • Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 93:9, s. 096403-
  • Tidskriftsartikel (refereegranskat)abstract
    • We propose a first-principles based method for calculating the electronic structure and total energy of solids in an intermediate-valence configuration. The method takes into account correlation effects (d-f Coulomb interaction) and many-body renormalization of the effective hybridization parameter of the f system. As an example, the formation of a pressure-induced intermediate-valence state in Yb is considered and its electronic structure and equation of state are calculated and compared to experimental data. The agreement is found to be excellent for both properties, and we argue that the developed method, which applies to any element or compound, provides for the first time a quantitative theoretical treatment of intermediate-valence materials.
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  • Resultat 1-8 av 8

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