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Träfflista för sökning "WFRF:(Janus M) srt2:(2005-2009)"

Sökning: WFRF:(Janus M) > (2005-2009)

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1.
  • Rich, Rebecca L., et al. (författare)
  • A global benchmark study using affinity-based biosensors
  • 2009
  • Ingår i: Analytical Biochemistry. - : Elsevier BV. - 0003-2697 .- 1096-0309. ; 386:2, s. 194-216
  • Tidskriftsartikel (refereegranskat)abstract
    • To explore the variability in biosensor studies, 150 participants from 20 countries were given the same protein samples and asked to determine kinetic rate constants for the interaction. We chose a protein system that was amenable to analysis using different biosensor platforms as well as by users of different expertise levels. The two proteins (a 50-kDa Fab and a 60-kDa glutathione S-transferase [GST] antigen) form a relatively high-affinity complex, so participants needed to optimize several experimental parameters, including ligand immobilization and regeneration conditions as well as analyte concentrations and injection/dissociation times. Although most participants collected binding responses that could be fit to yield kinetic parameters, the quality of a few data sets could have been improved by optimizing the assay design. Once these outliers were removed, the average reported affinity across the remaining panel of participants was 620 pM with a standard deviation of 980 pM. These results demonstrate that when this biosensor assay was designed and executed appropriately, the reported rate constants were consistent, and independent of which protein was immobilized and which biosensor was used.
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2.
  • Cieślik, M., et al. (författare)
  • Metal release and formation of surface precipitate at stainless steel grade 316 and Hanks solution interface : Inflammatory response and surface finishing effects
  • 2009
  • Ingår i: Corrosion Science. - : Elsevier BV. - 0010-938X .- 1879-0496. ; 51:5, s. 1157-1162
  • Tidskriftsartikel (refereegranskat)abstract
    • The influence of surface finishing (polishing and passivation) on the release of Cr, Fe, Ni from the stainless steel 316 implant materials to Hanks solution with or without H2O2 (simulating a body inflammatory response) was investigated. The surfaces were characterized by means of SEM EDXS, XPS and Kelvin Probe measurements before and after exposure to the synthetic body fluids. The total metal ions release rates are more than 10 times higher in the presence of H2O2, independently of the surface finishing. In the absence of H2O2, formation of a surface layer consisting mainly of Ca3(PO4)2 was observed, most likely it was responsible for the observed decrease of the release rates. © 2009 Elsevier Ltd. All rights reserved.
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