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Biomedical subjects

R R Rogers

Publications and source records attributed to R R Rogers.

At least 73 records · Page 4Linked to original sources
PubMed1981

Biological effects of long-term exposure of rats to 970-MHz radiofrequency radiation.

Rats (N = 16) exposed individually in circularly polarized waveguides to 970-MHz electromagnetic radiation (SAR = 2.5 mW/g, 22 h daily for 70 consecutive days) had significantly higher serum levels of triglycerides, albumin, and total protein compared with sham-irradiated controls. No difference was observed in the weights, hematologic profile, or in vitro lymphocyte responses to mitogens between these two groups. The higher serum levels of triglycerides in radiofrequency-radiation-exposed rats suggest a non-specific stress reaction.

Animals↗
PubMed1980

Microwave radiation (2450 MHz) alters the endotoxin-induced hypothermic response of rats.

The parenteral administration of bacterial endotoxin to rats causes a hypothermia that is maximal after approximately 90 minutes. When endotoxin-injected rats were held in a controlled environment at 22 degree C and 50% relative humidity and exposed for 90 minutes to microwaves (2450 MHz, CW) at 1 mW/cm2, significant increases were observed in body temperature compared with endotoxin-treated, sham-irradiated rats. The magnitude of the response was related to power density (10 mW/cm2 greater than 5 mW/cm2 greater than 1 mW/cm2). Saline-injected rats exposed for 90 minutes at 5 mW/cm2 (specific absorption rate approximately 1.0 mW/g) showed no significant increase in body temperature compared with saline-injected, sham-irradiated rats. The hypothermia induced by endotoxin in rats was also found to be affected by ambient temperature alone. Increases in ambient temperature above 22 degree C in the absence of microwaves caused a concomitant increase in body temperature. This study reveals that subtle microwave heating is detectable in endotoxin-treated rats that have impaired thermoregulatory capability. These results indicate that the interpretation of microwave-induced biological effects observed in animals at comparable rates and levels of energy absorption should include a consideration of the thermogenic potential of microwave.

Acclimatization↗
PubMed1975

A teaching drill in child psychiatry.

The authors report on a teaching drill for psychiatric trainees that tests their ability to communicate child psychiatry concepts to a nonpsychiatric physician and to parents of a disturbed child as well as their abilities in the role of a supervisor and a "visiting professor." It was found that the drill was a learning experience for the trainees that focused attention on their problems in integrating their psychiatric skills and identity with their identification with the medical model.

Attitude of Health Personnel↗