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Träfflista för sökning "WFRF:(Llobet X.) srt2:(2006-2009)"

Sökning: WFRF:(Llobet X.) > (2006-2009)

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1.
  • Armengol Llobet, J., et al. (författare)
  • Minimal Structurally Overdetermined Sets for Residual Generation: A Comparison of Alternative Approaches
  • 2009
  • Ingår i: <em>Proceedings of IFAC Safeprocess'09</em>. - Barcelona, Spain. - 9783902661463 ; , s. 1480-1485
  • Konferensbidrag (refereegranskat)abstract
    • The issue of residual generation using structural analysis has been studied by several authors. Structural analysis does not permit to generate the analytical expressions of residuals since the model of the system is abstracted by its structure. However, it determines the set of constraints from which residuals can be generated and it provides the computation sequence to be used. This paper presents and compares four recently proposed algorithms that solve this problem.
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3.
  • Espinosa, E. H., et al. (författare)
  • Highly Selective NO2 Gas Sensors made of MWCNTs and WO3 Hybrid Layers
  • 2007
  • Ingår i: Journal of the Electrochemical Society. - : The Electrochemical Society. - 0013-4651 .- 1945-7111. ; 154:5, s. J141-J149
  • Tidskriftsartikel (refereegranskat)abstract
    • Hybrid gas sensors were fabricated by means of multiwalled carbon nanotubes (MWCNTs) covered by W O3 deposited by an advanced reactive gas deposition method. In order to increase the dispersion of nanotubes and attach functional groups to their surface so as to enhance their compatibility with other compounds, the MWCNTs were functionalized in two different radio-frequency plasmas (oxygen or hydrogen) under different operating conditions. X-ray photoelectron spectroscopy, scanning electron microscopy, and atomic force microscopy were employed to analyze the composition and morphology of the hybrid films. Gas sensors based on such films were found to be very selective to N O2 when operated at room temperature. No cross-sensitivity was found to other hazardous gases such as N H3 or CO.
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