MOKUZAI HOZON (Wood Protection)
Online ISSN : 1884-0116
Print ISSN : 0287-9255
ISSN-L : 0287-9255
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Volume 30, Issue 6
Displaying 1-6 of 6 articles from this issue
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  • [title in Japanese]
    [in Japanese]
    2004 Volume 30 Issue 6 Pages 246-249
    Published: November 25, 2004
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.30.246
    JOURNAL FREE ACCESS
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  • Applying of hot and cold bath process with alkyl ammonium compound for a simplified preservative treatment (I)
    Hiroshi KURISAKI
    2004 Volume 30 Issue 6 Pages 250-258
    Published: November 25, 2004
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.30.250
    JOURNAL FREE ACCESS
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    To evaluate the effectiveness of hot and cold (H-C) bath process with AAC, laboratory tests were conducted under various conditions, i. e. preservative chemicals, hot bath conditions, species and moisture contents of wood, then absorption and penetration of preservative solution were measured. The results were as followed ;
    1) Absorption of preservative solutions obtained by H-C bath process was greater than that by dipping processs or vacuum process. Absorption attained in H-C bath process with AAC was greater than those with creosote or emulsified copper naphthenate. When air-dried Sugi sapwood was treated by H-C bath process with AAC, absorption and penetration area of AAC solution were 540kg/m3 and 76%, respectively.
    2) In H-C bath process, absorption and penetration were varied by hot bath conditions. Hot bathing with boiling water gave greater absorption and penetration than hot AAC bathing.
    3) Absorption was also varied by wood species. In H-C bath process, absorption of AAC solutionexceeded 400kg/m3 in air-dried sapwood of Sugi and Scotch pine, whereas absorption in heartwood of Sugi and sapwood of Hinoki was about 100kg/m3.
    4) In Sugi sapwood, absorption of AAC solution by H-C bath process reduced at higher moisturecontents, but sufficient absorption was attained at moisture contents levels under 30%.
    From these results, H-C bath process with AAC can be applied for dried Sugi sapwood as a simplified preservative treatment.
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  • [title in Japanese]
    [in Japanese]
    2004 Volume 30 Issue 6 Pages 259-264
    Published: November 25, 2004
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.30.259
    JOURNAL FREE ACCESS
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    Biological efficacy by treatment at outside of foundation wall (hereinafter OFW) with imidacloprid which is major non-repellent termiticide, have been evaluated. Transfer efficacy on imidacloprid and fipronil in laboratory also has been conducted to substantiate these field trials. These results showed that OFW application in field reduced termite's density and control termites around constructions without direct application to galleries in both Japan and US. Based on these findings, OFW application to termite's inhabiting area with imidacloprid, could show positive effectiveness to eliminate termites or decrease their population. Laboratory trial showed that imidacloprid and fipronil had transfer efficacy on termite's workers, and also they showed several times transfer efficacy. According to this laboratory trial, the results of OFW treatment at these fields have been supported.
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  • [title in Japanese]
    [in Japanese]
    2004 Volume 30 Issue 6 Pages 265-268
    Published: November 25, 2004
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.30.265
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    2004 Volume 30 Issue 6 Pages 269-272
    Published: November 25, 2004
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.30.269
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    2004 Volume 30 Issue 6 Pages 273-275
    Published: November 25, 2004
    Released on J-STAGE: May 22, 2009
    DOIhttps://doi.org/10.5990/jwpa.30.273
    JOURNAL FREE ACCESS
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