6,486 Studies Reviewed. 85.2% of Original Studies Found Biological Effects. The Evidence is Clear.

EMF Research Studies

Browse 6,486 peer-reviewed studies on electromagnetic field health effects from 4 research libraries.

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The Performance of a New Direct Contact Applicator for Microwave Diathermy

Gideon Kantor, Donald M. Witters, Jr., John W. Greiser · 1978

Researchers evaluated a direct contact applicator for microwave diathermy at 2.45 GHz by studying near-field patterns, thermographic heating patterns in fat and muscle phantoms, and leakage radiation. The applicator used a circular waveguide with a conical flare horn, annular choke, and dual posts to generate circular polarization. Heating patterns on muscle phantoms and inside fat-muscle phantoms were spatially similar and relatively uniform. Leakage was 0.8 mW/cm² per 100 W forward power for direct contact and 4 mW/cm² per 100 W for a 1-cm air gap, with +2 dB uncertainty. The study concluded the applicator is technically feasible, safe, effective, and a viable candidate for hyperthermia.

Health Aspects of Exposure to Microwave and Radio Frequency Radiation

M. Repacholi · 1978

Descriptions are given on the physical characteristics, biophysical principles, and biological effects of exposure to these radiations. Public and occupational health implications and protective measures against the hazards of exposure are also described. Existing standards for general public and occupational exposure have been tabulated and described to inform the reader about presently accepted maximum permitted exposure levels.

Risks associated with the utilization of non ionizing radiations

R. MARCHAND · 1978

The congress theme was chosen because rapid growth in medical, industrial, and domestic uses of non-ionizing radiations, especially microwaves and lasers, required better knowledge of their possible effects on people. Papers were to cover specific effects of short or long-term exposures, indirect effects, safety standards, measurement methods, protection measures, and surveillance. Authors had to submit six copies of an abstract by December 1, 1977, and if accepted, send an original manuscript and three copies by February 15, 1978.

ULTRASTRUCTURAL NEUROPATHOLOGY IN AREAS OF INCREASED BLOOD-BRAIN BARRIER PERMEABILITY AFTER MICROWAVE IRRADIATION

Albert, E.N. · 1978

Researchers exposed adult Wistar rats and Chinese hamsters to continuous-wave microwave irradiation at 2450 and 2800 MHz at 10 mW/cm² for 2 hours. Horseradish peroxidase was injected intravenously to identify brain areas with increased blood-brain barrier permeability. Electron microscopy revealed endothelial cells flooded with peroxidase, swollen astrocytic end feet, myelin figures in dendrites, membranous proliferation in dendrites, and platelet microthrombi in capillaries. Light microscopy showed edematous neuropil surrounding leaky vessels.

MEASURED PATTERNS OF STRAY RADIATION PRODUCED BY THERAPEUTIC MICROWAVE APPLICATORS WHEN APPLIED TO TISSUE-SUBSTITUTE MODELS AND HUMAN SUBJECTS

Lehmann et al. · 1978

Researchers measured stray radiation patterns from two prototype diathermy applicators applied to four tissue-substitute models and four human subjects. The applicators were placed at eight anatomical sites on the human subjects. Measured power-density levels showed that neither applicator would comply with the proposed Bureau of Radiological Health microwave diathermy performance standard. Leakage levels depended on applicator orientation, tissue model, subject size, and anatomical site. Good contact between the applicator and the model or subject reduced stray radiation, while poor contact increased it.

NAVIGATIONAL COMPASS IN MAGNETOTACTIC BACTERIA

R.P. Blakemore, R.B. Frankel, A.J. Kalmijn · 1978

Mössbauer spectroscopy revealed that freshwater magnetotactic spirilla contain iron-rich particles of about 50 nanometers consisting primarily of magnetite. The authors demonstrate that these particles fall in the single magnetic domain size range and that a chain of such particles functions as a single magnetic dipole moment.

INFORMATION PROFILE - RADIOFREQUENCY AND MICROWAVE RADIATION

Science Information Services Department · 1978

Rats exposed to pulsed radiofrequency or microwave frequencies for up to three hours a day over 0.5 to 6.0 months showed chemical and cellular blood changes, reduced cardiac, hepatic, and neural metabolism, hepatic histologic changes, and severe testicular damage. Mice exposed to 9 GHz for a few minutes a day for 59 weeks developed monocytic leukosis and myeloid leukemia three times as often as controls. Human studies included a Russian report that cardiovascular patients chronically exposed to microwave radiation did not improve after changing jobs, a Finnish study correlating a radar site with increased fatal heart attacks, and a study of 140 radio and television operators with at least 10 years exposure showing elevated alpha-globulin and total serum protein.

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