✦ LIBER ✦

Evaluation of changes in diatom mobility after exposure to 16-Hz electromagnetic fields

✍ Scribed by J. A. Reese; Dr. M. E. Frazier; J. E. Morris; R. L. Buschbom; D. L. Miller

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 283 KB
Volume: 12
Category: Article
ISSN: 0197-8462
DOI: 10.1002/bem.2250120104

No coin nor oath required. For personal study only.

✦ Synopsis

The effect of a 16-Hz electromagnetic field on the mobility of the diatom Amphora cuffeuformis was examined on agar plates that contained no added calcium and also on agar plates containing 0.25 or 2.5 mM exogenous Ca'+. Exposure conditions consisted of an ac field of 16 Hz with an amplitude of 20.9 p,T parallel to the horizontal component of the dc field (BH = 20.9 p,T, where B , = 0). To asscss results, the percentage of diatoms that moved a distance greater than their body length was determined. We observed the fieldassociated increase in diatom motion at 0.25 mM Ca+ +, which was previously reported in the literature. Although the magnitude of the effect at 16 Hz was significant, the percentage of cells that moved was not sufficiently reproducible to allow examination for frequency dependence.

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