SwePub
Sök i SwePub databas

  Extended search

Träfflista för sökning "WFRF:(Kravchenko A) srt2:(2005-2009)"

Search: WFRF:(Kravchenko A) > (2005-2009)

  • Result 1-2 of 2
Sort/group result
   
EnumerationReferenceCoverFind
1.
  • Kravchenko, T A, et al. (author)
  • Contribution of dimensional factor to the potential of copper-containing electron-ion exchangers
  • 2006
  • In: Russian journal of electrochemistry. - 1023-1935 .- 1608-3342. ; 42:3, s. 233-238
  • Journal article (peer-reviewed)abstract
    • The average size of copper particles in copper-containing electron-ion exchangers is determined with the aid of microscopy and x-ray diffractornetry. The results are used to calculate the contribution made by a dimensional factor to the electrode potential. Compared to the potential of compact copper, the potential shift in the negative direction measured experimentally falls within the region of calculated values. The average size of copper particles remains practically unchanged after contact with a copper sulfate solution. testifying to stabilization of an ultradisperse state of copper particles by a polymer matrix.
  •  
2.
  • Elming, Sten-åke, et al. (author)
  • Palaeomagnetism and AR-40/AR-39 age determinations of the Ediacaran traps from the southwestern margin of the East European Craton, Ukraine : relevance to the Rodinia break-up
  • 2007
  • In: Journal of the Geological Society. - : Geological Society of London. - 0016-7649 .- 2041-479X. ; 164:5, s. 969-982
  • Journal article (peer-reviewed)abstract
    • A palaeomagnetic study and age determinations have been performed on Ediacaran basalts from the northwestern Ukraine. Whole-rock ^sup 40^Ar/^sup 39^Ar age determination revealed plateau ages at 590-560 Ma and 393 Ma, the latter probably reflecting a resetting of the radiometric system. Palaeomagnetic poles have been calculated from five basalt flows, two of which (A poles) are considered reliable with ages that range from 580 to 560 Ma. Tentative poles (B poles), calculated from most probably primary magnetizations, have ages estimated at 580-545 Ma. Secondary magnetizations, possibly of late Ediacaran or Devonian age, have also been isolated (C poles). Based on the new poles, Baltica drifted together with Laurentia from an equatorial position at c. 750 Ma to occupy high southern latitude positions at c. 580 Ma. Baltica during that time period was joined to Laurentia in a similar relative position to that at 750 Ma. The two shields then split up from each other and from c. 550 Ma Baltica drifted at moderately high latitudes and rotated some 180° during the final opening of the Iapetus ocean. This reconstruction suggests that during the Ediacaran glaciation Baltica occupied high-latitude positions, which contradicts the high-obliquity model to explain low-latitude Neoproterozoic glaciations
  •  
Skapa referenser, mejla, bekava och länka
  • Result 1-2 of 2

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view