Hydrology

Volume 5, Issue 5, September 2017

  • Nitrification Activity of Water Sources in Dnipropetrovsk Region (Ukraine)

    Hryhorenko Liubov Victorovna

    Issue: Volume 5, Issue 5, September 2017
    Pages: 67-72
    Received: Jan. 28, 2017
    Accepted: Feb. 13, 2017
    Published: Oct. 23, 2017
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    Abstract: In the decentralized water supply sources all tacsons, except 6 tacson, had an unfavorable self-purification processes and incompleteness of nitrification activity. Therefore the average annual indicators in the water samples, carried out in 1 – 5 tacsons, increased in dynamics by the nitrogen ammonia: from (0.24±0.05) to (0.43±0.20) mg/dm3, i.e. i... Show More
  • Arsenic Removal by α, β and γ Cyclodextrin Polymers from Contaminated Water

    Md. Shariful Islam

    Issue: Volume 5, Issue 5, September 2017
    Pages: 73-76
    Received: Oct. 27, 2016
    Accepted: Dec. 26, 2016
    Published: Oct. 31, 2017
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    Abstract: α, β and γ cyclodextrin polymers (CDP) has been successfully tested for arsenic (As) removal from As contaminated water. Removal of As (III) was studied through batch adsorption experiment at pH 3.6 to 9.0 with different time ranges from 0.5 to 24 h. α, β and γ−CDP worked well at pH 6.8 but highest As removal (86.9%) was achieved from γ-CDP at pH 5... Show More
  • The Barotropic Instability of the Oceanic Jet Currents

    Alexander Alekseyevich Solovyev, Dmitry Alexandrovich Solovyev

    Issue: Volume 5, Issue 5, September 2017
    Pages: 77-81
    Received: Feb. 21, 2017
    Accepted: Mar. 28, 2017
    Published: Nov. 01, 2017
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    Abstract: In this article we present the results of the laboratory experiments with shift currents in the homogenous shallow water generated by differentially rotating elements of the vessel bottom: central axisymmetric disk and outer coupled rings. Based on the experimental results, we explain the generation of vortex rings due to the development of barothr... Show More