Louis Slesin · 1984
The article reviews concerns about radiation from video display terminals (VDTs) in the workplace. VDTs emit very low frequency (VLF) radiation from the flyback transformer at about 16,000 pulses per second. The VLF pulses are similar in shape and intensity to those that caused adverse effects on chick embryos in Delgado's laboratory. Eleven clusters of problem pregnancies and miscarriages have been reported among women working on or near VDTs in the U.S. and Canada.
Charles Wallach · 1982
Prolonged CRT use is associated with eye, nose, throat, and skin irritations, headaches, dizziness, nausea, pain, malaise, and premature births or miscarriages. The author proposes that the high positive surface charge on CRT screens neutralizes negative ions, increases positive ion concentrations, and repels airborne particles toward operators.
Unknown authors · 1980
Researchers exposed semen specimens from fertile and infertile patients to visible light, UV light, x-rays, and high-frequency radio waves. Sperm motility was analyzed before, during, and after irradiation using the multiple exposure photography method. No significant difference was found between controls and specimens exposed to various doses of visible light, UV light, and x-rays either immediately or several hours after exposure. High-frequency radio waves had a deleterious influence on human spermatozoa.
Helen C. Chase · 1979
PADMAKAR P. LELE · 1979
Patricia Y. Hester, B.B. Bohren · 1978
White Leghorn eggs were individually rolled through a magnetic coil for 3 seconds per egg before incubation. Hatchability percentages and chick body weights were measured at 90.5 and 21.5 days of incubation. The study found no effect of the EMF exposures on hatchability, body weight, or hatching time.
Harry D. Muller · 1978
The study describes recent development of rodent control devices that reputedly work by electromagnetic charging of the ground or structures. Rodent damage was estimated at $25 per rat and $4 per mouse, and chemical control poses residue risks in meat, eggs, or manure. Devices initially evoked increased burrowing followed by atypical behavior including distorted diet patterns, burrow avoidance, lethargy, reduced reproduction, anorexia, and hypo-activity resulting in death.
Sol M. Michaelson, Ronnie Guillet, Franklin W. Heggeness · 1977
P. S. Rai, H. J. Ball, S. O. Nelson, L. E. Stetson · 1977
Daels, J · 1976
S. J. BAUM et al. · 1976
William B. Stavinoha et al. · 1975
The second study used 40-minute daily exposures for 5 days at 19 MHz with an H-field of 55 amps/meter and an E-field of 8000 volts/meter. Growth was tracked daily for 21 days and then weekly for 16 weeks, and no statistically significant differences were found between exposed and control groups.
Lancranian I, Maicanescu M, Rafaila E, Klepsch I, Popescu HI · 1975
P. S. RAI, H. J. BALL, S. O. NELSON, L. E. STETSON · 1975
In mating combinations that included a treated male, females laid significantly fewer eggs than in combinations with a treated female, and egg production decreased with longer exposure times. Hatch percentages did not differ significantly across any mating combination. Progeny of RF-treated adults laid far fewer eggs (142.9 vs 296.9) but had similar hatch rates (71.0% vs 77.7%). Adults emerging from RF-treated larvae also laid fewer eggs (81.1-98.1 vs 154.4) with no significant difference in hatch percentages.
Gabriel G. Nahas et al. · 1975
Roberts Rugh, Edward I. Ginns, Henry S. Ho, William M. Leach · 1975
Researchers exposed individual CF1 mice to 2450 MHz microwave radiation in a waveguide with controlled temperature, humidity, and air flow. Female mice in estrus had a lower average lethal absorbed dose (10.65 cal/g) than those in diestrus (11.50 cal/g). Pregnant mice exposed on gestation day 8 showed teratogenic effects including exencephalies, hemorrhages, resorptions, stunting, and fetal death at absorbed doses of 3 to 8 cal/g, and the response was not all-or-none. As absorbed dose increased, the probability of at least one exencephaly per litter increased, but the relationship was not linear and varied widely among litters. A total of 1096 mice were exposed and monitored individually.
Dietzel F. · 1975
Man M. Varma, Eric Traboulay · 1974
Multiple session chairmen and presenters including R.C. Baird et al. · 1974
OSTROVSKAIA IS, IASHINA LN, EVTUSHENKO GI · 1974
DAVID McK. RIOCH, M.D. · 1974
P. S. RAI, H. J. BALL, S. O. NELSON, L. E. STETSON · 1974
Three-day postemergence adult mealworm beetles were exposed to continuous-wave 39-MHz RF electric fields at 2.5 kV for 4.0 seconds. In ovarian tissue, trophocyte disintegration and vacuole formation appeared at 3 days post-treatment and increased by 6 days with most germarium cells disintegrated. Oocytes from treated adults stained darker and germinal vesicles showed clear areas not seen in controls at 6 days post-treatment.
Joan Arehart-Treichel · 1974
Department of the Navy Electronic Systems Command · 1973
A. ZERVINS, D.V.M. · 1973
Researchers exposed fertilized chicken eggs to a 26-kHz, 160-gauss peak-to-peak alternating current field for 19 days while keeping control eggs under identical conditions without the field. The hatch rate was 64.5% for exposed eggs and 48.5% for controls. Statistical analysis yielded a Z-value of 1.79 with a probability of 0.0367, leading to rejection of the hypothesis that the field reduces hatching at the 5% significance level. No gross abnormalities were found in dead embryos, and all hatched chicks appeared normal during 36 hours of observation.
