Microwave Radiation and Thermoregulation.
Abstract
Adult male squirrel monkeys were equilibrated to one of three ambient temperatures (Ta-20, 26 and 32 C) and then re-equilibrated for a 90-min period in the presence of a 2450-MHz CW microwave field. Power densities of 10, 15, 20, and 25 mW/sq cm were explored (SAR=1.5, 2.25, 3.0, and 3.75 W/kg, respectively) at each T sub a=32 C. In accordance with the method of partitional calorimetry, the following autonomic responses of heat production and heat loss were measured during the experiments: metabolic heat production, respiratory evaporative heat loss, total evaporative heat loss, skin and deep body temperatures that allowed determination of heat flows within the body, and from the body to the environment. The monkeys achieved thermal balance by the mobilization of appropriate thermoregulatory responses. These included a reduction of metabolic heat production when cool vasodilation of tail and foot when thermoneutral T sub a, and initiation of thermoregulatory sweating when warm. The coefficient of heat transfer to the environment, derived from these measures, was the same as that determined directly in the test environment.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1985
- Accession Number
- ADA155718
Entities
People
- E. R. Adair
Organizations
- Johannes Gutenberg University Mainz