A. Ripamonti, R.B. Frankel, E.M. Ettienne · 1979
Researchers isolated sarcoplasmic reticulum vesicles from 10-14 day old chicks and exposed the microsomes to a 0.7 tesla magnetic field at 4°C for up to 60 minutes before adding them to a reaction mixture. After 30 minutes of exposure, calcium uptake rates rose from 800 to 6000 nanomoles per milligram per minute and total calcium sequestered rose from 175 to 350 nanomoles per milligram. Phosphate release from ATP hydrolysis fell from 6.0 to 3.5 nanomoles per milligram per minute over the same period.
William Regelson et al. · 1979
S. S. Kronenberg, T. S. Tenforde · 1979
L. Hellemans, M. De Maeyer, R. Ooms · 1979
John R. Thomas, Linda S. Burch · 1979
Four male Long-Evans rats were trained on a fixed-interval schedule requiring a lever press for food pellets. The rats were exposed to 2.45 GHz pulsed microwave radiation at an average power density of 1 mW/cm² for 30 minutes before behavioral sessions. Chlordiazepoxide alone increased response rates up to a maximum, but combined with microwave radiation the drug's effects were potentiated. Behavior returned to baseline after each session.
P. Tuengler, F. Keilmann, L. Genzel · 1979
The study tested whether millimeter microwaves affect the function of alcohol dehydrogenase and hemoglobin in vitro. Alcohol dehydrogenase was exposed to 40–115 GHz radiation at near 10 mW/cm² while monitoring the reaction rate via NADH absorption using a 337 nm filter. No change in alcohol dehydrogenase turnover rate was detected within a sensitivity of 0.1%. Hemoglobin at half-oxygenation was exposed to absorbed intensity of 3–13 mW/cm² across 40–115 GHz. No shift in the equilibrium oxygen constant of half-oxygenated hemoglobin was detected within a sensitivity of 0.4%.
C.A.L. Bassett et al. · 1978
Adolfo Portela et al. · 1978
The report was funded by the Office of Naval Research under grant NURULA-08. Additional support came from the US Navy Department, the Comando General de la Armada Argentina, the Comando General del Ejército, and the US Atomic Energy Commission.
J. Monahan · 1978
S. M. Bawin, A. Sheppard, W. R. Adey · 1978
Albert, E.N. · 1978
Researchers exposed adult Wistar rats and Chinese hamsters to continuous-wave microwave irradiation at 2450 and 2800 MHz at 10 mW/cm² for 2 hours. Horseradish peroxidase was injected intravenously to identify brain areas with increased blood-brain barrier permeability. Electron microscopy revealed endothelial cells flooded with peroxidase, swollen astrocytic end feet, myelin figures in dendrites, membranous proliferation in dendrites, and platelet microthrombi in capillaries. Light microscopy showed edematous neuropil surrounding leaky vessels.
Unknown authors · 1978
The field coils produced a pulsed magnetic field weaker than a refrigerator magnet and stayed in place for ten to fourteen days. X-rays taken every other day showed the field side had more rapid bone growth than the natural healing side.
K. M. Stürmer, H. Kehr, K. P. Schmit-Neuerburg, K. Seidel · 1978
S. M. Bawin, W. R. Adey, I. M. Sabbot · 1978
C. Tamburello, L. Dardanoni · 1978
Square-modulated 72 GHz microwaves reduced colony-forming units of Candida albicans compared with continuous-wave exposure. The study also examined how ambient temperature and different modulation frequencies affected cell sensitivity.
Leo E. Gerweck, Peggy Burlett · 1978
The study compared the effect of heat or X-irradiation on the reproductive capacity of 3 cell lines. Two human astrocytoma cell lines showed equal sensitivity to hyperthermia at 42°C or 44°C but differed in radiation sensitivity. Chinese hamster ovary cells were most sensitive to hyperthermia while showing intermediate radiation sensitivity. The results demonstrate a lack of correlation between heat and radiation sensitivity on the cellular level.
M.G.Shandala et al. · 1977
C.A.L. Bassett et al. · 1977
André-Jean BERTEAUD, Michèle DARDALHON · 1977
R. S. Molday, S. P. S. Yen, A. Rembaum · 1977
Lövsund, P., Öberg, P.A., Nilsson, S.E.G. · 1977
Researchers recorded extracellular electrical activity from frog retinal ganglion cells during and after exposure to ELF magnetic fields. The preparations were exposed to magnetic flux densities of 0-80 mT at frequencies of 10-50 Hz. Ganglion cell responses varied with flux density and frequency, and cells responded only to ON-OFF changes in the field.
L-E. Paulsson, Y. Hamnerius, W. G. McLean · 1977
P. S. Rai, H. J. Ball, S. O. Nelson, L. E. Stetson · 1977
Unknown authors · 1977
Researchers cultured human bone marrow cells in agar and exposed them to AC and DC electrical currents for 7 days. Symmetrical AC impulse current had no effect on cell growth. DC current greater than 10 pA caused severe growth reduction and protein electrophoresis. The growth reduction was proportional to the logarithm of the AC current amplitudes. The reduction was not related to induction, pH changes, or protein electrophoresis.
Arthur W. Guy · 1977
The system was designed for the National Institute for Occupational Safety and Health to determine human RF exposure thresholds in the frequency range D.C. to 100 MHz. The final design uses concentric stainless steel rings with a teflon bottom that forms a liquid-tight seal compressed by brass retainer clamps.
