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Sökning: WFRF:(Zaitseva N)

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2.
  • Biryulin, YF, et al. (författare)
  • Strongly non-linear carbon nanofibre influence on electrical properties of polymer composites
  • 2008
  • Ingår i: Fullerenes, nanotubes, and carbon nanostructures. - : Informa UK Limited. - 1536-383X .- 1536-4046. ; 16:5-6, s. 629-633
  • Tidskriftsartikel (refereegranskat)abstract
    • Composites of carbon nanofibres (CNF) (30-50 nm diam., length up to 1 mu m) in two polymer matrices (polybutadiene-styrene and polypyrrhol) show strong non-linearities of conductivity vs. CNF concentration. We have studied their voltage-current dependencies, and observed correlation of their extrema and layer morphology. Multistability of conductivity is discovered, with apparent effect of magnetic field effect on it in polypyrrhol-based composites. In addition CNF spatial configuration influence on layers' conductivity is discussed.
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4.
  • Vybornov, A., et al. (författare)
  • Chronological problems with neolithization of the northern caspian sea area and the forest-steppe povolzhye region
  • 2012
  • Ingår i: Radiocarbon. - 0033-8222 .- 1945-5755. ; 54:3-4, s. 795-799
  • Tidskriftsartikel (refereegranskat)abstract
    • Steppe and forest-steppe areas of the Povolzhye area (Caucasus and central Asia) bear much interest for the Neolithic in connection with the productive economy of the region at the time. Recent data have allowed correction of the region's chronology. A number of C-14 dates denote the existence of the Neolithic in this territory as early as the 5th to 6th millennium BP. However, some questions are still under debate and require further data to clarify.
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5.
  • Zaitseva, G., et al. (författare)
  • Radiocarbon dating of neolithic pottery
  • 2009
  • Ingår i: Radiocarbon. - 0033-8222 .- 1945-5755. ; 51:2, s. 795-801
  • Tidskriftsartikel (refereegranskat)abstract
    • The direct measurement of organic matter included in archaeological pottery may yield a reliable assessment of age. The main problem consists in the identification of possible origins and assessment of distortion for the age of organic inclusions. Our experiments show that shells included in pottery fabrics are strongly influenced by the reservoir effect, which may reach 500 yr or more. Other organic inclusions, such as lake ooze, do not visibly distort the age. The obtained series of radiocarbon dates have been used for the assessing the age of the early stages of pottery manufacture in southern Russia.
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  • Resultat 1-5 av 5

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