EMF Research Studies

ETUDE ET MODELISATION DE SONDES COAXIALES ADAPTEES A LA MESURE DE PERMITTIVITE "IN VIVO" DE MILIEUX BIOLOGIQUES DANS LA BANDE HYPERFREQUENCE

André CASTELAIN et al. · 1980

The researchers developed a theoretical approach for microcoaxial probes with numerical simulations covering complex permittivity values where the real part ranges from 2 to 80 and the imaginary part from 2 to 40. Experimental validation used polar liquids with dielectric properties similar to biological tissues and gel phantoms employed in microwave hyperthermia studies. Good agreement between experimental and numerical results was found across the 1-12 GHz frequency range, allowing a first interpretation of measurements on real biological media.

The Origins of U.S. Safety Standards for Microwave Radiation

Nicholas H. Steneck et al. · 1980

MICROWAVE THERMOGRAPHY ; THE MODELING OF PROBES ; AN APPROACH TOWARD THERMAL PATTERN RECOGNITION

D.D. Nguyen et al. · 1980

They used an active process with a coherent microwave signal fed into tissues and a passive process estimating thermal noise power from tissues reaching the probe. They verified that probe-tissue matching improves when the permittivities of the probe dielectric and tissue are closer. Experiments with a polythene pipe filled with warm water in a water tank showed good agreement between computed and experimental thermal signatures.

Nonionizing electromagnetic radiation associated with video-display terminals

R. C. Petersen, M. M. Weiss, G. Minneci · 1980

Detected emissions included sweep frequencies, clock frequencies, and their harmonics, but all levels were far below exposure standards. No microwave emissions above 1GHz were found associated with any terminal. The authors concluded there is no evidence that VDT emission levels cause deleterious health effects.

The Effects on Populations of Exposure to Low Levels of Ionizing Radiation

Committee on the Biological Effects of Ionizing Radiations · 1980

Radiofrekventa elektromagnetiska fält på radiostationer och i högmaster

Kjell Hansson Mild · 1979

Safety Code-6: Recommended Safety Procedures for the Installation and Use of Radiofrequency and Microwave Devices in the Frequency Range 10 MHz - 300 GHz

Unknown authors · 1979

Nonionizing Electromagnetic Radiation Safety: A Program of Federal Activities Related to Biological Effects of Nonionizing Electromagnetic Radiation (0 - 300 GHz)

Interagency Task Force on Biological Effects of Nonionizing Electromagnetic Radiation et al. · 1979

The BENER Task Force produced this document describing a coordinated federal program for nonionizing electromagnetic radiation safety. The program's goal is to acquire and apply information needed as a basis for control measures that protect human health and the environment while permitting beneficial uses of nonionizing electromagnetic radiation. The task force identified seven interrelated objectives that must be accomplished to achieve this goal. The task force particularly encouraged growth in research on possible effects on behavior, the central nervous system, the immune system, growth and development, and teratology, with special emphasis on long-term low-level studies and epidemiology.

The Challenge of Nonionizing Radiation: A Proposal for Legislation

Karen A. Massey · 1979

NATIONAL ASSOCIATION OF BROADCASTERS – 57TH ANNUAL CONVENTION AND INTERNATIONAL EXPOSITION PROGRAM

Unknown authors · 1979

DOSIMETRY, INSTRUMENTATION AND EXPOSURE CHAMBERS FOR DC MAGNETIC FIELD STUDIES

Tom S. Tenforde · 1979

SPECIFIC ABSORPTION RATES IN MICE EXPOSED TO 918 AND 2450 MHZ CIRCULARLY POLARIZED GUIDED EM FIELDS

Guy, Arthur W., Wallace, Jack, McDougall, John A. · 1979

ABSENCE OF OCULAR PATHOLOGY AFTER REPEATED EXPOSURE OF UNANESTHETIZED MONKEYS IN 9-3 GHZ MICROWAVES

McAfee, R.D., Longacre, A. Jr., Bishop, R.R. et al. · 1979

TR3900-OS3900 OPHTHALMIC DIATHERMY SYSTEM - PRICE LIST EFFECTIVE JANUARY 1, 1979

Medical Instrument Research Associates, Inc. · 1979

An RF Solution to a Beef Cancer

James B. Brinton · 1979

R&D Status Report - Energy Analysis and Environment Division

René Males · 1979

New cavity perturbation technique for microwave measurement of dielectric constant

Susanta Sen, P. K. Saha, B. R. Nag · 1979

RADIOFREQUENCY ENVIRONMENTS IN THE UNITED STATES

David E. Janes, Jr. · 1979

Temperature Distributions obtained with Diathermy Electrodes implanted into a Phantom

H. J. WASSERMAN, W. LEVIN · 1979

The treatment volume was sandwiched between two sets of electrodes forming parallel planes 2.5 cm to 10 cm apart with 1 cm spacing between adjacent electrodes. Heating at a rate of not more than 4.5°C in approximately 20 minutes produced temperature uniformity within 1°C across cylindrical volumes 2.5 to 10 cm wide. Slower heating avoided excessive temperatures near the electrodes, and thermal conduction in the phantom helped maintain uniform distributions. The method was considered a possible means of achieving localized hyperthermia in vivo for cancer treatment.

The Role of Water in Microwave Absorption by Biological Material with Particular Reference to Microwave Hazards

A. W. J. DAWKINS et al. · 1979

Researchers modeled a hydrated macromolecule as a spherical core with a bound water shell and calculated microwave power absorption from 100 MHz to 100 GHz. Bound water absorbed at least five times more energy per unit volume than free water, with peak difference at the bound water relaxation frequency. Because bound water is strongly coupled to macromolecules, this enhanced absorption could be a significant factor in explaining biological effects of microwaves at a molecular level.

What are the effects of electrical and magnetic fields on man?

Jean Cabanes · 1979

EFFECTS OF ULTRASOUND ON DROSOPHILA: III. EXPOSURE OF LARVAE TO LOW-TEMPORAL-AVERAGE-INTENSITY, PULSED IRRADIATION

Sally Z. Child, Edwin L. Carstensen, Shung K. Lam · 1979

Dielectric Properties of Brain Tissue between 0·01 and 10 GHz

KENNETH R. FOSTER et al. · 1979

Between 0-01 and ~1 GHz the permittivity decreased and conductivity increased as a power law of frequency. Above 1 GHz the conductivity increased quadratically with frequency due to dipolar reorientation of free water molecules, with an apparent rotational relaxation frequency of 21-24 GHz at 37 °C. The authors provided empirical equations for the dielectric properties of average brain tissue at 37 °C for theoretical microwave absorption studies.

Microwave scattering parameter imagery of an isolated canine kidney

Lawrence E. Larsen, John H. Jacobi · 1979

An Investigation of Energy Densities in the Vicinity of Vehicles with Mobile Communications Equipment and Near a Hand-held Walkie Talkie

Donald L. Lambdin · 1979