BIOMAGNETIC RESPONSE OF SIMPLE BIOLOGICAL SYSTEMS AND THE IMPLICATIONS FOR LONG DURATION SPACE MISSIONS.
Technical rept. Apr-Dec 65,
DAYTON UNIV OHIO RESEARCH INST
Pagination or Media Count:
Several space age technological developments employ powerful magnetic fields in a manner that can subject the human operator to intense levels of magnetic exposure. Examples include magnetic forming tools, magnetic shielding, magnetohydrodynamic propulsion systems, and various magnetic containment devices. Reports in the literature have implied that rapidly metabolizing tissues may be affected by intense, inhomogeneous magnetic fields. To investigate this hypothesis, two ideal biological systems were exposed to fields of approximately 4,000 oersted intensity and gradients of 500 to 2,000 oersteds per cm. The oxygen uptake rate of fresh guinea pig kidney brie enriched with succinate was measured by Warburg manometry for magnetically exposed and control samples. The difference between uptakes was statistically evaluated using a sequential t-test. In a second experiment, the growth rate of E. coli was measured for exposed and control cultures, employing the viable plate count technique. The sequential t-test was again used. The results indicated that the magnetic exposure had no significant effect on either biologic system. Author
- Anatomy and Physiology