Ultrahigh-Frequency Electromagnetic Fields for Weed Control: Phytotoxicity and Selectivity
William C. Milbo · 1971
Browse 6,486 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.
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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
Lobanova EA, Goncharova AV · 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.
REFSHAUGE · 1971
Byron D. McLees, Edward D. Finch, Marion L. Albright · 1971
Lawrence T. Odland · 1971
I. S. Dronov, A. D. Kiritseva · 1971
Mansel Davies, P. Maurel, A. H. Price · 1971
Researchers measured microwave absorption at 3, 8.5, 36, and 72 GHz on three molecular weight samples of poly(γ-benzyl-L-glutamate) in two solvents. In each case a distinct, narrow absorption centered between 2 and 15 GHz was observed and was almost temperature independent. The absorption’s frequency, intensity, and contour are not inconsistent with a helical-spring vibration mode proposed to explain an abnormal polarizability increase.
Kenneth R. Envall, Richard W. Peterson, Harold F. Stewart · 1971
Shapiro AR, Lutomirski RF, Yura HT · 1971
Researchers calculated induced fields and static heating patterns for a multilayered spherical model of a primate cranial structure irradiated by a plane wave at 3000 MHz. They demonstrated that the semi-infinite slab model is inappropriate for calculating microwave radiation dosage for the human head and that the infinite slab model can give large errors for the internal fields.