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Fossum KR, Johnsson A, Iversen TH. The effect of vibration noise in space relevant experiments. J Gravit Physiol. 2002;9(1):P355-6
Fossum, K. R., Johnsson, A., & Iversen, T. H. (2002). The effect of vibration noise in space relevant experiments. Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology, 9(1), P355-6.
Fossum, Knut R, et al. "The effect of vibration noise in space relevant experiments." Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology vol. 9,1 (2002): P355-6.
Fossum KR, Johnsson A, Iversen TH. The effect of vibration noise in space relevant experiments. J Gravit Physiol. 2002 Jul;9(1):P355-6. PMID: 15002612.
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J Gravit Physiol. 2002 Jul;9(1):P355-6.

The effect of vibration noise in space relevant experiments.

Journal of gravitational physiology : a journal of the International Society for Gravitational Physiology

Knut R Fossum, Anders Johnsson, Tor-Henning Iversen

Affiliations

  1. The Plant Biocentre, Department of Botany, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.

PMID: 15002612

Abstract

The experiments performed were initiated as a part of the post-flight investigations after the "PROTO" experiment performed on IML-1. The present experiments were performed with protoplasts prepared using the same standard isolation procedures as for the IML-1. The protoplasts were vibrated for 24 h with and without air bubbles in the protoplast cultivation bags and in the range of 1 to 20 Hz with 4 mm amplitude. The vibrations were found to have a negative effect on the viability of the protoplasts in bags without air bubbles and the vibration threshold seemed to lie around 20 Hz. Air bubbles are likely to cause cavitation-like conditions, thus increasing the mechanical strain on the free-floating protoplasts. During the 30 days microgravity mode on the ISS, mechanical vibrations would not be expected to have a significant influence on potential protoplast experiments. Experiments with durations overlapping the rendezvous and reboost mode may be exposed to critical vibration levels.

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