The effects of ultrasonic irradiation on germination

Author

Shimomura, Sumi Take

Author_Institution

Fac. of Eng., Toyo Univ., Saitama, Japan

Volume

2

fYear

1998

fDate

1998

Firstpage

1439

Abstract

An attempt to investigate the biological action of ultrasound on germinating vegetable seeds is presented. Specimens were irradiated with weak and continuous wave radiation of an intensity below 15 W/cm² and a frequency of 1 MHz. The experimental data showed that the weight increase of seeds due to absorption of water and the growth of roots were accelerated by some effects other than the ultrasonic thermal action. The effects were a function of the temperature and the sound intensity. A quantity in terms of thermal equivalent is suggested for the accelerated growth, instead of the appearance temperature under water in an experimental bath

Keywords

biological effects of acoustic radiation; biothermics; botany; ultrasonic effects; 1 MHz; accelerated growth; appearance temperature; experimental bath; germination; root growth; seed weight increase; thermal equivalent; ultrasonic irradiation effects; ultrasonic thermal action; Acceleration; Batteries; Chemicals; Electric variables measurement; Frequency; Humans; Skin; Surface impedance; Temperature distribution; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE

Conference_Location

Sendai

ISSN

1051-0117

Print_ISBN

0-7803-4095-7

Type

conf

DOI

10.1109/ULTSYM.1998.765214

Filename

765214