Search Results - (Author, Cooperation:N. R. Bates)
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1Latest Papers from Table of Contents or Articles in PressK. R. Arrigo ; D. K. Perovich ; R. S. Pickart ; Z. W. Brown ; G. L. van Dijken ; K. E. Lowry ; M. M. Mills ; M. A. Palmer ; W. M. Balch ; F. Bahr ; N. R. Bates ; C. Benitez-Nelson ; B. Bowler ; E. Brownlee ; J. K. Ehn ; K. E. Frey ; R. Garley ; S. R. Laney ; L. Lubelczyk ; J. Mathis ; A. Matsuoka ; B. G. Mitchell ; G. W. Moore ; E. Ortega-Retuerta ; S. Pal ; C. M. Polashenski ; R. A. Reynolds ; B. Schieber ; H. M. Sosik ; M. Stephens ; J. H. Swift
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-06-09Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Arctic Regions ; Biomass ; Diatoms/growth & development ; *Eutrophication ; *Ice Cover ; Light ; Nitrates/analysis ; Oceans and Seas ; Photosynthesis ; Photosystem II Protein Complex/analysis ; Phytoplankton/*growth & development ; Seawater/chemistryPublished by: -
2Articles: DFG German National LicensesStaff View
ISSN: 1433-0768Keywords: Key words Cathodic protection system ; Carbon ; oxidation ; Composite carbon/polymer anode ; LifetimeSource: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyNotes: Abstract The suitability of a polymeric composite material for use as part of an anode structure in a cathodic protection system has been examined. The composite material was a conductive blend (volume resistivity typically 1.5 Ω cm) of carbon black in a polyethylene binder. A long operational lifetime for the material demands that the rate of carbon loss must be low. In the work reported here, electrochemical and in situ analytical techniques were employed to characterise the performance of the material over a wide range of anodic current densities in a variety of aqueous electrolytes. The predominant anodic electrochemical reaction on the polymeric material is CO2 formation in acid and neutral solutions, which causes loss of carbon from the surface and the development of a non-conducting layer of polyethylene. The characteristics of the reaction suggest that it occurs via the discharge of H2O. In alkaline pH, however, the anodic reactions are more complex. A high OH− concentration (pH 12 or higher) favours the formation of oxygen rather than CO2, particularly at low anodic potentials. The presence of CO3 2− in the electrolyte catalyses the evolution of oxygen at pH values as low as 9. The electrochemical formation of oxygen always occurs in parallel with the generation of some humic acid in the solution.Type of Medium: Electronic ResourceURL: