Browse 6,486 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
Showing 2,816 studies in Whole Body / General
L.J.C. · 1974
The Environmental Impact Assessment Project assigned interdisciplinary teams of public interest scientists to critique federal impact statements. The project had a two-year budget of $220,000 and relied on volunteer faculty time, with about 400 volunteers signed up.
B. Appleton · 1974
Biomicroscopically detectable lens signs considered precursors of cataract occurred equally in both groups. A registry of seven acute high-level microwave exposures found no superficial burns or eye damage, with ocular status consistent with age. The authors concluded that lens damage probably has not occurred from cumulative low-level exposure and probably could not occur from acute exposure without severe facial burns. A separate study of 19 diathermy workers showed no difference in ocular examinations compared to controls.
Unknown authors · 1974
The publishers announced that Biophysik would continue from Volume 114 in 1974 under the new title Radiation and Environmental Biophysics. The journal's scope includes biophysics of nonionizing radiations such as microwaves and radio waves. The journal will also cover biological effects of physical factors and biophysical aspects of environmental research.
D. Michael Bitz, Malcolm L. Sargent · 1974
The magnetic fields had no significant effect on growth rate or circadian period (conidiation rhythm) at P < 0.05. No reproducible changes in morphology, conidiation, or pigmentation were observed.
Marlet H. Benedick, Bernard Greenberg · 1974
E. J. Isbister · 1974
Richard Aztell, John C. Nelson · 1974
Randal J. Williams, Edward D. Finch · 1974
William A. Tiller · 1974
Donald R. Koerner, M.D. · 1974
Joan Arehart-Treichel · 1974
R. V. RAJOTTE et al. · 1974
W. A. G. Voss, R. V. Rajotte, J. B. Dossetor · 1974
Researchers applied 2450 MHz microwave energy to thaw deep-frozen tissue culture cells, fetal mouse hearts, and adult canine kidneys at rates up to 300°C/min. Chinese hamster cells thawed by microwave at 100–250°C/min survived as well as or better than water-bath-thawed cells when final temperature stayed below about 10°C. After implantation in syngeneic mouse ears, microwave-thawed hearts showed 67% survival at 6–15 days and 59% beyond 30 days, with electrical activity identical to unfrozen controls. Canine kidneys were thawed uniformly at 100–300°C/min from −79°C to 23°C with variation under ±12°C when perfusion was complete, but full functional recovery was not achieved.
Unknown authors · 1974
Existing federal safety criteria of 10 mW/cm2 were based on 1950s microwave data and provisional EMP criteria from 1971 were under review. Researchers reported that biological effects may be frequency-specific, with 1.7 GHz potentially more injurious than 2.4 GHz, and that magnetic fields may be more biologically important than electric fields at lower frequencies.
CDR William C. Milroy, MC, USN · 1974
The one-day symposium was held on 10 July 1973 at the Naval Weapons Laboratory in Dahlgren, Virginia. The symposium marked the opening and dedication of a new Biomedical Research Laboratory and the start of a multidisciplinary research effort on nonionizing radiation bioeffects. Six invited papers covered bio-engineering, comparative biology, human exposure factors, high power pulses, and EMP bioeffects. The proceedings were published because of a large number of requests for reprints of the presented papers.
Gary H. Price · 1974
The review classifies nuclear electromagnetic pulse generation into three models: Compton electron currents from prompt gamma radiation, photoelectron currents from primary X radiation, and field displacement from expanding plasma perturbing the geomagnetic field. For each model the review discusses causes of asymmetry in the current system necessary for radiation, including the earth-atmosphere interface, atmospheric density gradient, geomagnetic field anisotropy, nonuniform radiation emission, and device case asymmetries. Available experimental data establish the models as probably correct in identifying principal generation processes but are inadequate for quantitative assessment of model accuracy.
Freeman W. Cope · 1974
The author first built a large copper cavity that absorbed over 95 percent of incident S-band power when empty, making it impractical for rat exposures. Incident powers up to 10 watts were used at 3.25 Gc for S-band and 9.00 Gc for X-band.
Gandhi OP · 1974
Researchers used a parallel-plate waveguide to measure RF absorption in rats and phantom bodies across 285 to 4000 MHz. The waveguide results agreed well with free-space irradiation measurements. The El4 orientation (electric field along the major length) was the most absorbing, while the A14 orientation was the least absorbing, and the k14 orientation was only slightly more absorbing than A14. In rats, peak absorption frequencies decreased with increasing body weight, with maximum absorption at 1217, 1020, 900, and 760 MHz for 96-, 158-, 261-, and 390-g animals respectively. Waveguide absorption measurements were in quantitative agreement with behavioral experiments showing shorter work-stoppage times at frequencies with higher absorption.
K. J. McLean et al. · 1974
Om P. Gandhi · 1974
John S. Steinhart, Carol E. Steinhart · 1974
Unknown authors · 1974
Louise B. Young, H. Peyton Young · 1974
Lawrence E. Larsen, Robert Avery Moore, John Acevedo · 1974
Bench tests of conventional temperature transducers in microwave fields showed artifacts of several degrees centigrade. In waveguide tests, the conventional glass electrode produced a fast artifact of approximately 11/2°C at 19.5 mm penetration, while the MIC electrode with 5-μm microline showed about 0.1°C artifact. Thermographic testing revealed the MIC electrode itself was undetectable, but metallic lead wires heated to approximately 10°C above the mount during 2-minute exposures at 50 mW/cm² and conducted heat to the upper substrate.
A. W. GUY, J. F. LEHMANN, J. B. STONEBRIDGE · 1974