USAF Radiological Health Laboratory (AFLC) · 1971
No hazardous levels of ionizing, ultraviolet, or microwave radiation were detected aboard the aircraft during flight. Sound levels during flight were considerably above recommended values and were the most significant hazard identified. Clinical examinations of 27 study group personnel and 23 control personnel revealed no differences in lens findings between the groups.
J. Damelin · 1971
The report explains that high-power VHF-UHF radiation can harm people and animals by overheating tissue. It defines radiation protection guide numbers of 10 and 1.0 milliwatts per square meter for different temperature-humidity indices. If the curves indicate a potential hazard, the actual antenna system must be analyzed with extensive near-field calculations.
H. A. Ecker, C. P. Burns, R. L. Magin, V. P. Popovic · 1971
In the differential hypothermia technique, the whole animal was cooled to 40-50°F and electromagnetic radiation heated the tumor to approximately 98°F. Cooled healthy tissues utilized very little of the anticancer drug while the warm tumor with high metabolic rate was affected to a much higher degree. Mice with spontaneous tumors treated with 5-fluorouracil and differential hypothermia showed significant tumor regression after several hours. Rats with chemically induced tumors showed tumor regression in all cases after differential hypothermia and chemotherapy. A technique using 3-30 MHz radiation with ferrite or magnetic stainless steel doping was developed for heating deep tumors such as in the brain.
Eugene Edmonds, James Hartranft · 1971
Ninety-three ovens were surveyed, with 29 used for residential use, 62 for commercial use, and 2 for sales demonstration. Seven percent of residential ovens and 23% of commercial ovens leaked above the voluntary industry standard of 10 mW/cm?. Twenty-eight percent of home ovens and 41% of commercial ovens had mechanical deficiencies. Detectable leakage greater than 0.5 mW/cm? was found in 82% of ovens, and 41% exceeded the proposed national standard of 5 mW/cm? at 5 cm distance.
D. D. Eley, R. Pethig · 1971
William A. Mills · 1971
Sol M. Michaelson, Arthur J. Moss · 1971
S.M. Michaelson, E.L. Dodge · 1971
William C. Milbo · 1971
J. B. MULDER · 1971
S. M. Michaelson · 1971
Sol M. Michaelson, Joe W. Howland, Wm. B. Deichmann · 1971
WILLIAM C. MILROY, SOL M. MICHAELSON · 1971
Mills · 1971
Barry Miller · 1971
William A. Mills et al. · 1971
As of February 1, 1971, the FCC listed 892 TV stations and 7,868 broadcasting stations. The paper concluded that while no hazards had been definitively established at current ambient power levels, the increasing number of radiation sources and exposure levels necessitated measurement and evaluation before possible effects became apparent.
Lyman J. Hardeman · 1971
STEPHEN N. HUNYOR et al. · 1971
Unknown authors · 1971
DE ROUNDS, T LANWILL · 1971
The study aimed to determine if subthreshold laser energy in the green to infrared spectrum could produce chromosomal or genetic changes persisting through several cell generations. Human lung and tumor cells received UV laser irradiation as a single pulse. Tumor cells were more susceptible to damage than human fibroblasts, with dilatation and fragmentation of ribosomes in non-tumor cells and no detectable mitochondrial changes. Tumor cells showed extensive blebbing of cytoplasmic components, structureless and swollen mitochondria, and non-membrane bound clear areas of cytoplasm. Few cells showed dramatic changes in nuclear ultrastructure, suggesting the primary damage sites were not the protein synthesis machinery.
Paul F. Wacker, Ronald R. Bowman · 1971
V. A. Konovalenko, V. A. Yamshanov · 1971
Researchers measured the complex dielectric constant of water, NaCl solutions, serum from healthy donors, a cancer patient, and horse serum over 1-30 Mc/s. Serum from three healthy donors, one cancer patient, and preserved horse serum showed practically identical dielectric parameters within measurement error. The real part of the complex dielectric constant of native serum matched that of 0.1 N NaCl across the whole range, indicating salts determine this component. Dialysis of serum against 0.01 N NaCl reduced salt concentration so that the reactive component matched water while the active conductivity exceeded the salt solution, an excess attributable to proteins.
Herman P. Schwan · 1971
Roger C. Nealeigh et al. · 1971
Twenty female Sprague-Dawley rats about 90 days old were randomly assigned to a control group and a microwave-irradiated group. The microwave exposures consisted of 2.45 GHz continuous wave irradiation for 20 minutes at a maximum power density of 50 mw/cm*. Performance of white rats in a Y-maze learning task was altered by exposures of 2.45 GHz microwaves at a measured maximum level of 50 mW/cm*.
Robert W. Neidlinger · 1971
The author reviews at least four main mechanisms by which microwave radiation could produce cataracts. The author notes that it is extremely difficult to design experiments that yield unequivocal results relevant to occupational exposure.
