@article{oai:fit.repo.nii.ac.jp:00000639,
 author = {服部, 毅範 and 篠田, 鼎 and 保坂, 昌克},
 issue = {2},
 journal = {福岡工業大学研究論集, RESEARCH BULLETIN OF FUKUOKA INSTITUTE OF TECHNOLOGY},
 month = {Sep},
 note = {application/pdf, 論文(Article), Necessary ions move through a cell film related to life maintenance of the living body, according to outside envirorunent changes. From that, when an activity state of a plant is compared by saturation velocity, we find that a cherry tree shows the tendency to depend on a weather condition, but a Japa­nese oak and a silk tree do not as much. Also, a Japanese oak conspicuously shows the ion concentra­tion ratio in spite of the weather condition. An earthquake may occur in less than a week from the day this ion concentration is observed. In addition, influence of ion concentration ratio of boring work within 10 meter deep underground near a Japanese oak is great. A Japanese oak can be regarded as a plant which fully possesses a function of a living body sensor. The change of normal electrical poten­tial from its simple observation may be a phenomenon before the actual earthquake outbreak. 
For these reasons, we could make good use of it for envirorunent of a community and reduce an earthquake disaster as an earthquake sensor, even if it is uncertain.},
 pages = {237--244},
 title = {外部環境変化に伴う観測対象の生体電位および地電位変化},
 volume = {35},
 year = {2003}
}