Bulletin of the Society of Sea Water Science, Japan
Online ISSN : 2185-9213
Print ISSN : 0369-4550
ISSN-L : 0369-4550
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Volume 52, Issue 5
Displaying 1-6 of 6 articles from this issue
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  • Recent Researches on Ion Exchange Membrane Technology (Part 2)
    Shigeru ITOI, Akihiro KAWAGUCHI, Takehito KAWASHIMA, Makoto KOGURE, Ak ...
    1998 Volume 52 Issue 5 Pages 261-285
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.261
    JOURNAL FREE ACCESS
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  • Mass Circulation Surrounding Sea Water and Crystallization of Calcium Carbonate
    Kaoru ONOE
    1998 Volume 52 Issue 5 Pages 286-291
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.286
    JOURNAL FREE ACCESS
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  • Reactive Crystallization of Calcium Carbonate
    Kenji UKAI, Ken TOYOKURA
    1998 Volume 52 Issue 5 Pages 292-298
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.292
    JOURNAL FREE ACCESS
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  • Induction of Stress Proteins in Bacillus subtilis YS11 and the Effect of Salt on Growth of Phages
    Effect of Salt on Phages and Their Host Bacteria (Part 4)
    Akira MURATA, Daisuke SATOH, Nobuyasu SATOH, Kohzo KANDA, Fumio KATO
    1998 Volume 52 Issue 5 Pages 299-305
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.299
    JOURNAL FREE ACCESS
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    Bacillus subtilis YS11, when the temperature shifted from 37 to 48°C, synthesized stress proteins more (78 kDa and 86 kDa). When treated with 1.0 M NaCl, no stress proteins were induced. The strain, when subjected to heat shock and salt stress, synthesized another stress protein more quickly (50 kDa).
    First, using the strain subjected to heat shock and salt stress, the effect of salt on the growth of bacterial cells was investigated. At 37°C, salt completely inhibited the cellular growth at 2.0 M, compared to 1.2 M using the strain not subjected to stress. At 44°C, salt completely inhibited the cellular growth at 2.0 M, compared to 1.2 M using the strain not stressed. Second, the effect of salt on growth of phages M2 and SPO1 was investigated in relation to phage control with salt at high temperatures. At 37°C, salt completely inhibited the growth of phages at 1.6-1.8 M, compared to 1.2-1.3 M using the strain not stressed. At 44°C, salt completely inhibited the phage growth at 1.6-1.8 M, compared to 1.2-1.5 M using the strain not stressed.
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  • Behaviors of Organic Matter and Elements Loaded into River Water on Reaching the Estuary: A Model Experiment
    Makoto KIMURA, Wakako MUTOH, Akira WATANABE
    1998 Volume 52 Issue 5 Pages 306-314
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.306
    JOURNAL FREE ACCESS
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    To examine the behavior of organic matter and elements derived from terrestrial ecosystems as a result of river becoming estuarine, a model experiment was conducted by mixing suspensions of peat, litter, paddy soil, and manure samples with several concentrations of sea water. Elements were fractionated into a free form and three bound forms with water soluble organic matter including colloids difficult to precipitate (WSOM), insoluble organic matter (TOM), and clay particles (CP). The decrease in organic C after mixing with sea water was largest for the peat sample (> 90%) and smallest for the manure sample (7%>). Large percentages of P, which mainly existed in the bound forms with IOM and WSOM, and Fe, which mainly existed in the bound forms with CP, precipitated at 5% sea water. The percentage precipitation of elements were also larger for the peat sample and smaller for the manure sample. The percentage of possibility that these elements were precipitated oncewith the succeeding the free form was larger with Mn and Zn than with the other elements, and further increased with the increase in mixing ratio of sea water for some of samples, suggesting the possibility that these elements have been precipitated and are subsequently exchanged by ion exchange. The potential to supply bioelements in soluble form to coastal areas was greater for the paddy soil sample and smaller for the litter sample. Thus, it was considered that the concentration and the form of elements in estuarine water vary depending on the land use forms in watershed areas.
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  • Effect of Fulvic Acid-Fe Derived from the Forest on the Growth of Laminaria Religiosa Miyabe and Undaria Pinnatifida Suringan
    Katsuhiko MATSUNAGA, Goro NIGI, Yoshihiro SUZUKI, Hajime YASUI, Gridsa ...
    1998 Volume 52 Issue 5 Pages 315-318
    Published: 1998
    Released on J-STAGE: February 19, 2013
    DOIhttps://doi.org/10.11457/swsj1965.52.315
    JOURNAL FREE ACCESS
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    Oogonium formation and the growth rates of young sporophytes in the presence of several forms of iron were bserved. The respective percentages of oogonium formation of L. religiose and U. pinnatifida after 30 day cultures were 70, 54, 25 and 5%, and 55, 42, 25 and 0% with the addition of fulvic acid-Fe (FA-Fe), EDTA-Fe, morphous Fe (am-Fe) and control in due order. The growth rate of young sporophytes of L. religiosa with FA-Fe was about 3 times higher than that with am-Fe. The iron uptake rate of L. religiosa with FA-Fe was about 20 mes higher than that with am-Fe. The high percentage of oogonium formation and the high growth rate with A-Fe will be explained by the high Fe uptake rate with FA-Fe.
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