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Aerobiologia

, Volume 30, Issue 4, pp 435–444 | Cite as

Electrostatic guarding of bookshelves for mould-free preservation of valuable library books

  • Yoshihiro Takikawa
  • Yoshinori MatsudaEmail author
  • Teruo Nonomura
  • Koji Kakutani
  • Junji Kimbara
  • Kazumi Osamura
  • Shin-ichi Kusakari
  • Hideyoshi Toyoda
Brief communication

Abstract

Old books are highly susceptible to mould infection, and an effective method for avoiding moulding is needed to safely preserve valuable books in library stack rooms. Guarding a bookshelf with an electric field screen is a physical method that prevents airborne spores from entering the space used for book preservation. In this study, insulated conductor wires (ICWs) were used as electrodes to form electric fields. The ICWs were arrayed in parallel and linked to each other and to a direct current voltage generator. The electric field screen consisted of two layers of ICWs, which were negatively and positively charged with equal voltages to make dipoles, ICW(−) and ICW(+). Both ICWs generated an attractive force that captured airborne spores of Penicillium digitatum that were blown inside the screen. The attractive force was directly proportional to the applied voltage. At ≧0.9 kV, the screen exerted sufficient force to capture all airflow-carried spores, but a few spores that were once captured were repulsed out of the electric field when subsequent spores were attracted to positions proximal to them. This phenomenon was explained by creeping discharge between spores located close to each other on the ICW surface. This spore-repulsion problem was resolved by adding an additional ICW layer to the electric field screen, namely an electric field screen with an ICW(−) layer on both sides of an ICW(+) layer. The present study demonstrated that the three-layered electric field screen remained mould-free inside a screen-guarded bookshelf, irrespective of continuous spore exposure.

Keywords

Electric field screen Penicillium digitatum Creeping discharge 

Notes

Acknowledgments

This work was supported by JSPS KAKENHI Grant Number 25450375.

Supplementary material

Supplementary material 1 (MPG 3518 kb)

Supplementary material 2 (MPG 3014 kb)

References

  1. Cross, J. A. (1987). Dielectrophoresis. In A. E. De Barr (Ed.), Electrostatics: Principles, Problems and Applications (pp. 269–276). Bristol: Adam Hilger.Google Scholar
  2. da Silvia, M., Morgaes, A. M. L., Nishikawa, M. M., Gatti, M. J. A., Vallim, M. A., de Alencar, M. A. V., et al. (2006). Inactivation of fungi from deteriorated paper materials by radiation. International Biodeterioration and Biodegradation, 57, 163–167.CrossRefGoogle Scholar
  3. Halliday, D., Resnick, R., & Walker, J. (2005). Electric fields. In S. Johnson & E. Ford (Eds.), Fundamentals of Physics (pp. 580–604). New York: Wiley.Google Scholar
  4. Jonassen, N. (2002). Abatement of static electricity. In N. Jonassen (Ed.), Electrostatics (pp. 101–120). Massachusetts: Kluwer Academic Publishers.CrossRefGoogle Scholar
  5. Kanetis, L., Forster, H., & Adaskaveg, J. E. (2010). Determination of natural resistance frequencies in Penecillium digitatum using a new air-sampling method and characterization of fluodioxonil- and pyrimethanil-resistant isolates. Phytopathology, 100, 738–746.CrossRefGoogle Scholar
  6. Kebbabi, L., & Beroual, A. (2006). Fractal analysis of creeping discharging patterns propagating at solid/liquid interfaces: Influence of the nature and geometry of solid insulators. Journal of Physics. D. Applied Physics, 39, 177–183.CrossRefGoogle Scholar
  7. Lamford, W. A. (2002). Ionization chamber. In E. Geller, et al. (Eds.), McGraw-Hill Encyclopedia of Science and Technology-9th Edition (pp. 442–446). New York: The Lakeside Press.Google Scholar
  8. Leach, C. M. (1976). An electrostatic theory to explain violent spore liberation by Drechslera turcica and other fungi. Mycologia, 68, 63–86.CrossRefGoogle Scholar
  9. Lourenço, M. J. L., & Sampaio, J. P. (2009). Microbial deterioration of gelatin emulsion photographs: Differences of susceptibility between black and white and colour materials. International Biodeterioration and Biodegradation, 63, 496–502.CrossRefGoogle Scholar
  10. Matsuda, Y., Ikeda, H., Moriura, N., Tanaka, N., Shimizu, K., Oichi, W., et al. (2006). A new spore precipitator with polarized dielectric insulators for physical control of tomato powdery mildew. Phytopathology, 96, 967–974.CrossRefGoogle Scholar
  11. Matsuda, Y., Kakutani, K., Nonomura, T., Kimbara, J., Kusakari, S., Osamura, K., et al. (2012). An oppositely charged insect exclusion screen with gap-free multiple electric fields. Journal of Applied Physics, 112, 116103(-1)–116103(-3).CrossRefGoogle Scholar
  12. Mizuno, A., & Washizu, M. (1995). Biomedical engineering. In J. Chang, A. J. Kelly, & J. M. Crowly (Eds.), Handbook of Electrostatic Processes (pp. 653–686). New York: Marcel Dekker.Google Scholar
  13. Moriura, N., Matsuda, Y., Oichi, W., Nakashima, S., Hirai, T., Nonomura, T., et al. (2006a). An apparatus for collecting total conidia of Blumeria graminis f. sp. hordei from leaf colonies using electrostatic attraction. Plant Pathology, 55, 367–374.CrossRefGoogle Scholar
  14. Moriura, N., Matsuda, Y., Oichi, W., Nakashima, S., Hirai, T., Sameshima, T., et al. (2006b). Consecutive monitoring of lifelong production of conidia by individual conidiophores of Blumeria graminis f. sp. hordei on barley leaves by digital microscopic techniques with electrostatic micromanipulation. Mycological Research, 110, 18–27.CrossRefGoogle Scholar
  15. Nonomura, T., Matsuda, Y., Xu, L., Kakutani, K., Takikawa, Y., & Toyoda, H. (2009). Collection of highly germinative pseudochain conidia of Oidium neolycopersici from conidiophores by electrostatic attraction. Mycological Research, 113, 364–372.CrossRefGoogle Scholar
  16. Sequeira, S., Cabrita, E. J., & Macedo, M. F. (2012). Antifungals on paper conservation: An overview. International Biodeterioration and Biodegradation, 74, 67–86.CrossRefGoogle Scholar
  17. Shimizu, K., Matsuda, Y., Nonomura, T., Ikeda, H., Tamura, N., Kusakari, S., et al. (2007). Dual protection of hydroponic tomatoes from rhizosphere pathogens Ralstonia solanacearum and Fusarium oxysporum f. sp. radicis-lycopersici and airborne conidia of Oidium neolycopersici with an ozone-generative electrostatic spore precipitator. Plant Pathology, 56, 987–997.CrossRefGoogle Scholar
  18. Sterflinger, K. (2010). Fungi: Their role in deterioration of cultural heritage. Fungal Biology Reviews, 24, 47–55.CrossRefGoogle Scholar
  19. Wegner, H. E. (2002). Electrical charging generators. In E. Geller, et al. (Eds.), McGraw-Hill Encyclopedia of Science and Technology-9th Edition (pp. 42–43). New York: The Lakeside Press.Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Yoshihiro Takikawa
    • 1
  • Yoshinori Matsuda
    • 2
    Email author
  • Teruo Nonomura
    • 2
  • Koji Kakutani
    • 3
  • Junji Kimbara
    • 4
  • Kazumi Osamura
    • 5
  • Shin-ichi Kusakari
    • 6
  • Hideyoshi Toyoda
    • 7
  1. 1.Plant Center, Institute of Advanced TechnologyKinki UniversityWakayamaJapan
  2. 2.Laboratory of Phytoprotection Science and Technology, Faculty of AgricultureKinki UniversityNaraJapan
  3. 3.Pharmaceutical Research and Technology InstituteKinki UniversityOsakaJapan
  4. 4.Research and Development DivisionKagome Co., Ltd.TochigiJapan
  5. 5.Technical Development UnitPanasonic Environmental Systems and Engineering Co., Ltd.OsakaJapan
  6. 6.Agricultural, Food and Environmental Sciences Research Center of Osaka PrefectureOsakaJapan
  7. 7.Laboratory of Phytoprotection Science and Technology, and Agriculture Faculty LibraryKinki UniversityNaraJapan

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