Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Melvin R. Frei"'
Publikováno v:
Bioelectromagnetics. 21:159-166
Relatively large thermal gradients may exist during exposure of an animal to microwaves (MWs), particularly at high frequencies. Differences in thermal gradients within the body may lead to noticeable differences in the magnitude of cardiovascular ch
Publikováno v:
Bioelectromagnetics. 20:264-267
We investigated the thermal distribution and cardiovascular effects produced by sustained exposure of rats to 94 GHz radio-frequency electromagnetic radiation (RFR). Sixteen ketamine-anesthetized Sprague-Dawley rats were exposed individually at a pow
Autor:
Rick E. Berger, James R. Jauchem, James H. Merritt, Steven J. Dusch, Veronica Guel, Michael A. Stedham, Melvin R. Frei
Publikováno v:
Bioelectromagnetics. 19:20-31
The purpose of this study was to determine whether chronic, low-level exposure of mammary-tumor-prone mice to 2450 MHz radiofrequency radiation (RFR) promotes an earlier onset (decreased latency), a greater total incidence, or a faster growth rate of
Autor:
James R. Jauchem, Heather M. Lehnert, Satnam P. Mathur, Kathy L. Ryan, Melvin R. Frei, Ronald L. Seaman, W.D. Hurt
Publikováno v:
Bioelectromagnetics. 19:330-333
Exposure to fast-rise-time ultra-wideband (UWB) electromagnetic pulses has been postulated to result in effects on biological tissue (including the cardiovascular system). In the current study, 10 anesthetized Sprague-Dawley rats were exposed to puls
Publikováno v:
Journal of Autonomic Pharmacology. 17:165-173
1. The purpose of this study was to examine effects of the beta(1)-adrenoreceptor antagonist esmolol (infused at 2 or 4 mg kg-1 body wt min-1) on heart rate, blood pressure, respiratory rate, localized body temperature changes, survival times, and le
Autor:
James R. Jauchem, Melvin R. Frei
Publikováno v:
Bioelectromagnetics. 18:335-338
These experiments were designed to investigate the effects of sub-resonant microwave (MW) exposure (350 MHz, E orientation, average power density 38 mW/cm2, average whole-body specific absorption rate 13.2 W/kg) on selected physiological parameters.
Publikováno v:
Shock. 7:70-76
Sustained exposure to radiofrequency radiation of millimeter wave (MMW) length produces hyperthermia and subsequent circulatory failure. This study sought to determine whether this phenomenon is altered by chronic pretreatment with the nitric oxide (
Publikováno v:
Shock. 6:71-76
The purpose of this study was to determine whether nitric oxide (NO) contributes to the hypotensive state induced by exposure to radiofrequency radiation of millimeter-wavelength (MMW). This was accomplished using a synthetic analogue of L-arginine,
Publikováno v:
Shock. 4:289-293
The objective of this study was to determine the thermal distribution and concomitant cardiovascular changes produced by whole-body exposure of ketamine-anesthetized rats to radiofrequency radiation of millimeter wave (MMW) length. Rats (n = 13) were
Autor:
James R. Jauchem, Melvin R. Frei
Publikováno v:
Journal of Applied Physiology. 77:434-440
Ketamine-anesthetized Sprague-Dawley rats were exposed to 2,450-MHz microwaves at an average power density of 60 mW/cm2 (whole body specific absorption rate of approximately 14 W/kg) until lethal temperatures were attained. The effects of propranolol