Whole Body / General

Holographic Assessment of a Hypothesized Microwave Hearing Mechanism

Allan H. Frey, Elaine Coren · 1979

Introduction, Brief Background, and Some Uses of Radiofrequency (RF) Sealers, Heaters, and Gluers

Zory R. Glaser · 1979

RF sealers, heaters, and gluers are also known as heat sealers, fusers, nolders, fasteners, embossers, high frequency sealers or dryers, electronic or electromagnetic sealers or welders, and dielectric heaters. Most devices operate between 3 and 100 MHz, with sealers commonly using ISM bands at 13, 27, and 40 MHz. An estimated 20,000 sealers are in use operated by approximately 30 to 40,000 workers.

Biopsychological Studies of Microwave Irradiation

Charles L. Sheridan et al. · 1979

The longevity study of mice exposed in utero to near-lethal 2450-MHz microwave radiation is in its third year with mortality rising in both groups. Spontaneous tumors appeared in two control mice (n=81) but not in radiated mice (n=83), a difference too narrow to exclude chance. Acute studies in anesthetized rats, guinea pigs, and rabbits showed that brief near-lethal 2450-MHz exposures produced whole-body temperature rises of 4.5 to 12 K and altered thermal distributions, with the brain stem appearing thermally privileged. Twelve pilot studies were completed to optimize microwave hyperthermia as adjuvant treatment for experimentally induced glioblastoma in rats.

Abstracts National Institute of Environmental Health Sciences Second Biennial Science Seminar

M. J. Ortner et al. · 1979

Researchers exposed isolated rat peritoneal mast cells to 2450 MHz microwave radiation at 8.5 and 42.5 mW/ml for up to 3 hours while maintaining the cells at 37°C. The exposure caused no change in cell morphology or viability as measured by Trypan Blue exclusion. Prior or simultaneous microwave exposure did not alter the cells' secretory response to compound 48/80. Heating cells to 45°C for 10 minutes made them refractory to 48/80, but microwave-exposed cells at 37°C responded normally, indicating no heat-induced membrane damage.

THRESHOLDS FOR PHYSIOLOGICAL EFFECTS DUE TO RF AND MAGNETIC FIELDS USED IN NMR IMAGING

Thomas F. Budinger · 1979

BEHAVIORAL AND PSYCHOLOGICAL EFFECTS OF MICROWAVE RADIATION

Don R. Justesen · 1979

IRLG NOTICE – ESTABLISHMENT OF RADIOFREQUENCY-MICROWAVE COMMITTEE

Mays L. Swicord, Chairman · 1979

The Food and Drug Administration, Environmental Protection Agency, Occupational Safety and Health Administration, and Consumer Product Safety Commission announced the formation of the committee. The committee held its first meeting on October 12, 1977, and two later monthly meetings. The National Institute for Occupational Safety and Health and the Federal Emergency Management Agency participated and were invited to join the committee. The committee drafted a radiation protection philosophy statement with several recommendations.

Radiofrequency (RF) Sealers and Heaters: Potential Health Hazards and Control

Unknown authors · 1979

DESIGN SPECIFICATIONS FOR A LARGE-VOLUME, DC TO 60 Hz, 0.1 TESLA (PEAK) MAGNET FOR PRIMATE EXPERIMENTATION

T. S. Tenforde, C. G. Dols, A. A. Lake, R. D. Hay · 1979

IRLG Radio Frequency/Microwave Committee: Interim Statement on RF Sealers

William A. Herman, Zorach R. Glaser · 1979

Simultaneous Microwave Local Heating and Microwave Thermography, Possible Clinical Applications

D.D. N'Guyen, A. Mamouni, Y. Leroy, E. Constant · 1979

A basic experiment showed the possibility of combining microwave local heating of subcutaneous living tissue with microwave radiometry using the same system. The system used a 4.6 GHz generator for heating and a 9.6 GHz radiometer with 60 MHz bandwidth for temperature measurement. In beef, 5 W of heating power produced an 8°C temperature increase in 10 minutes, and radiometric measurements agreed fairly with thermocouple readings. The authors suggested the method could help detect diseased tissue such as breast carcinoma, which becomes warmer than healthy tissue after microwave exposure.

Physical basis and technology of microwave radiometry

A. Mamouni, D.D. N'Guyen, M. Robillard, M. Chivé, Y. Leroy · 1979

The authors describe microwave radiometry systems that detect thermal noise to measure subcutaneous temperature without invasion. Two receivers were built with nearly 1 GHz bandwidth, one at 9 GHz and the other tunable from 2.5 to 3.5 GHz, and could resolve temperature changes of 0.2° or 0.15° within several seconds. Muscle measurements during exercise showed temperature increases higher than those from infrared thermography, confirming that the method reveals subcutaneous temperature.

RADIOTHERMOMETRIE MICROONDE A 9 GHz : Applications aux Cancers du sein et à des localisations tumorales diverses. MONACO - 11-15 Juin 1979 Résultats Préliminaires

A. MAMOUNI, Y. LEROY, M. SANSEL, M. GAUTHERIE · 1979

La thermographie microonde Principe et applications biomédicales

A. MAMOUNI, D.D. N'GUYEN, Y. LEROY, E. CONSTANT · 1979

Recommended Consultants for External Review of the Radiofrequency (RF)/Microwave Radiation Criteria Document

Criteria Manager, RF/Microwave Radiation Criteria Document · 1979

The Journal of Microwave Power

Dr. S. S. Stuchly · 1979

EPA Research Needs in Radiofrequency and Microwave Radiation

Unknown authors · 1979

PROPOSAL FOR MEASURING INTERACTION BETWEEN AN INDUCTION HEATING APPLIANCE AND SEVERAL TYPES OF MEDTRONIC PACEMAKERS

Kenneth Exworthy · 1979

PRELIMINARY RESEARCH PLAN ON BIOLOGICAL AND PHYSICAL ASPECTS OF NONIONIZING ELECTROMAGNETIC RADIATION

Unknown authors · 1979

NOTICE OF INQUIRY - Responsibility of the Federal Communications Commission to consider biological effects of radio frequency radiation when authorizing the use of radio frequency devices

Unknown authors · 1979

A Review of Selected Biological Effects and Dosimetric Data Useful for Development of Radiofrequency Safety Standards for Human Exposure

R.A. Tell, F. Harlen · 1979

The authors reviewed selected biological effects and dosimetric data to develop radiofrequency safety standards based on thermogenic properties of electromagnetic fields. The 10 mW/cm² limit appears adequate for frequencies above 1 GHz but may be too high for lower frequencies due to body resonances causing increased energy deposition and local temperature rises. They noted that energy absorption in small laboratory animals can be up to 30 times greater than in humans at the same field strength. The current averaging period of 0.1 hours is considered unjustifiably short.

DOSE ASSESSMENT TO OPERATORS OF INDUSTRIAL RADIOFREQUENCY SEALERS

Stan Neuder · 1979

ACTES du COLLOQUE OPTIQUE HERTZIENNE ET DIELECTRIQUES

Unknown authors · 1979

Radiofrequency Radiation Alters the Immune System: Modulation of T- and B-lymphocyte Levels and Cell-Mediated Immunocompetence by Hyperthermic Radiation

Robert P. Liburdy · 1979

Researchers exposed mice to whole-body radiofrequency radiation at 26 MHz that raised core temperature by 2°C over 15 minutes, inducing transient lymphopenia and increasing splenic T- and B-lymphocytes. Repeated RFR exposures sustained lymphopenia and further elevated splenic T- and B-lymphocyte levels. Chronic RFR exposure decreased thymic weight, thymic and splenic cell density, and suppressed delayed-type hypersensitivity. Warm air exposure increased only splenic B-lymphocytes and did not change delayed hypersensitivity, while RFR exposure raised plasma corticoid levels severalfold. A synthetic glucocorticoid reproduced the lymphopenia, splenic T- and B-lymphocyte increases, and thymic involution observed with RFR.

ELECTRO 79 PROFESSIONAL PROGRAM - THE SHERATON CENTRE HOTEL NEW YORK CITY April 24-26, 1979

Unknown authors · 1979