Naoshi Hirai

上級研究員(研究院教授)

  • 777 Citations
  • 15 h-Index
1993 …2020

Research output per year

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Research Output

2001

Effects of liquid chemicals on space charge evolution in low-density polyethylene

Minami, R., Hirai, N., Ohki, Y., Okashita, M. & Maeno, T., 2001 Dec 1, p. 87-90. 4 p.

Research output: Contribution to conferencePaper

7 Citations (Scopus)

Evaluation of degradation in polyimide by recovery voltage measurement

Yamaguchi, A., Wei, W., Hirai, N., Ohki, Y., Zaima, E. & Okabe, S., 2001 Jan 1, In : Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report. p. 216-220 5 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

On the mechanism of recovery voltage in a dielectric solid proposal of a simple equation

Yamaguchi, A., Hirai, N. & Ohki, Y., 2001 Dec 1, p. 67-70. 4 p.

Research output: Contribution to conferencePaper

Photoluminescence in polymeric insulating materials (low density polyethylene and polypropylene) induced by ultraviolet photons

Ito, T., Toyoda, T., Hirai, N. & Ohki, Y., 2001 Jan 1, p. 319-323. 5 p.

Research output: Contribution to conferencePaper

1 Citation (Scopus)
2000
27 Citations (Scopus)
1999

Effect of contaminant in breakdown time lag of uniform electric field using impulse breakdown in mineral oil

Hirai, N., Akumu, A. O. & Arii, K., 1999 Dec 1, p. 207-210. 4 p.

Research output: Contribution to conferencePaper

1 Citation (Scopus)
1998
1 Citation (Scopus)
1996
1993

Measurement of hole mobility in dielectric liquids

Hirai, N., Arii, K., Kikuchi, H., Masoaka, T. & Nitanada, H., 1993 Dec 1, Proceedings of the 11th International Conference on Conduction and. Publ by IEEE, p. 101-105 5 p. (Proceedings of the 11th International Conference on Conduction and).

Research output: Chapter in Book/Report/Conference proceedingConference contribution