Unknown authors · 1987
During the week of September 22, 1986, EPA and FCC personnel investigated radiofrequency radiation intensities near the Lookout Mountain antenna farms west of Denver, Colorado. Typical power densities near several area residences did not exceed 100 pW/cm², and the highest value along Cedar Lake Road was 580 pW/cm², which is below the 1000 pW/cm² FCC guideline. Near the base of the KYGO-FM tower, a 10,000 pW/cm² value was found and power densities exceeding 1,000 pW/cm² were measured over a large area in a residential area accessible to the public. EPA urged the FCC to order KYGO to correct the problem as soon as possible.
Kolmodin-Hedman B et al. · 1987
Louis N. Heynick · 1987
Bernhard E. Keiser, A.K. Guthrie · 1987
Unknown authors · 1986
The EPA proposed four alternative approaches to limit public exposure to radiofrequency radiation. Three options are regulatory and would set whole-body average SAR limits of 0.04, 0.08, and 0.4 W/kg for frequencies above 3 MHz. For frequencies below 3 MHz, the regulatory options would limit electric field intensity to 87, 275, and 614 V/m and magnetic field intensity to 0.23, 0.73, and -1.63 A/m respectively. The fourth option is nonregulatory and would use information and technical assistance programs instead of adopting Federal Guidance.
Martino Grandolfo · 1986
Robert F. Cleveland · 1985
Unknown authors · 1985
American National Standards Committee C95 · 1985
Unknown authors · 1985
Christopher H. Dodge, Zorach R. Glaser · 1984
The presentation was designed to enumerate actions taken by U.S. governmental groups on RF issues during the previous two years. The authors intended to point out the inconclusive and insufficient nature of the RF bioeffects and health effects databases. They also planned to note the difficulty of applying risk assessment to the available data.
Robert P. Liburdy, Alan Wyant · 1984
Researchers exposed human serum to a 10 MHz electric field during liquid gel chromatography and murine spleen lymphocytes to 2500MHz RFR during immunoaffinity cell chromatography. The 10 MHz exposure accelerated elution of IgM, IgA, and IgG fractions, with the IgG peak shifting from approximately 165 ml to 150 ml. The 2500MHz RFR exposure caused premature elution of 19 per cent of the Ig* (B-cell) population, indicating an alteration of Ig binding. No measurable heating occurred; the gel media temperature remained at 25-00 +0-05°C and temperature excursions in excess of +0-05°C were not observed.
Unknown authors · 1984
The document was prepared by the Conference of Radiation Control Program Directors and the National Center for Devices and Radiological Health. It covers three categories of nonionizing radiation: radiofrequency radiation including microwave, optical radiation, and acoustic radiation. For radiofrequency, 60 Hz fields, and ultrasound, most commercially available instruments are listed, while for optical measurements only representative instruments are included. Instrument specifications are taken from manufacturer data sheets and have not been verified by the publishing agencies.
Billy C.W. Nesmith · 1983
R. L. Waterfield, J. A. Allstadt · 1983
H. P. Schwan · 1982
The total frequency range is divided into four parts: below resonance, resonance, hot spot, and surface heating ranges. In the resonance range, absorption can be more than four times the incident radiation, with average SAR peaking near 80 MHz and extending from 30 to 300 MHz. Hot spots occur from 0.3 to 2 GHz for a human head model, with temperature elevations of 0.5°C at 10 mW/g SAR and a thermal time constant of about 3 minutes.
Sol M. Michaelson · 1982
The review evaluates the World Health Organization's Environmental Health Criteria 16 document on radiofrequency and microwave fields from 100 kHz to 300 GHz. The reviewer finds the publication unbalanced because it accepts nonthermal interaction literature with cursory critique while neglecting refuting evidence. The review notes that the document's designations of high, medium, and low power densities are ambiguous and ignore the frequency dependence of bioeffects. It points out specific errors in Table 10 frequency designations and an incomplete discussion of chronic cataract studies that omitted rabbit and monkey data showing no ocular damage. The reviewer concludes the document does not meet the high scientific caliber and accuracy of usual WHO publications.
Unknown authors · 1982
Paul S. Ruggera, Daniel H. Schaubert · 1982
Unknown authors · 1982
Christopher H. Dodge, Zorach (Zory) R. Glaser · 1981
T. F. Budinger · 1981
The document revises previous NMR instrumentation and clinical study guidelines based on new information and reanalysis. For static magnetic fields, harmful physiological or genetic effects are not expected below 2 T. For changing magnetic fields, the induced current effect threshold is above 5 mT at 1-100 Hz, though waveform, repetition rate, maximum B field, and exposure duration need further study. RF heating guidelines set a practical upper limit of a few watts for short studies under 10 minutes and 1 W/kg for long-term studies, with power absorption estimated via RF coil Q measurements.
J.W. Frazer · 1981
Paul S. Ruggera, Daniel H. Schaubert, Ph.D. · 1981
Committee on Man and Radiation (COMAR), IEEE · 1980
