To investigate the relationship between exposure and temperature changes in exposedtissues, without considering biological and medical effects. The extent of the thermic effects of a 1.25 GHz field on chicken embryos at several stages of embryonic development was evaluated.
power density:
25 W/m²
unspecified
(whole body SAR in embryo during day 1-7 and 14-21 of exposure were calculated to be 2.85 W/kg and 1.57 W/kg respectively)
power density:
7.5 W/m²
minimum
(whole body SAR in embryo during day 1-7 and 14-21 of exposure were calculated to be 0.86 W/kg and 0.47 W/kg respectively)
power density:
90 W/m²
maximum
(whole body SAR in embryo during day 1-7 and 14-21 of exposure were calculated to be 10.26 W/kg and 5.67 W/kg respectively)
power density:
53 W/m²
unspecified
(whole body SAR in embryo during day 1-7 and 14-21 of exposure were calculated to be 6.04 W/kg and 3.34 W/kg respectively)
power density:
70 W/m²
unspecified
(whole body SAR in embryo during day 1-7 and 14-21 of exposure were calculated to be 7.98 W/kg and 4.41 W/kg respectively)
power density:
12.5 W/m²
unspecified
(whole body SAR in embryo during day 1-7 and 14-21 of exposure were calculated to be 1.43 W/kg and 0.79 W/kg respectively)
power density:
53 W/m²
maximum
(whole body SAR in embryo during day 1-7 and 14-21 of exposure were calculated to be 6.04 W/kg and 3.34 W/kg respectively)
power density:
12.5 W/m²
unspecified
(whole body SAR in embryo during day 1-7 and 14-21 of exposure were calculated to be 1.43 W/kg and 0.79 W/kg respectively)
power density:
25 W/m²
unspecified
(whole body SAR in embryo during day 1-7 and 14-21 of exposure were calculated to be 2.85 W/kg and 1.57 W/kg respectively)
power density:
7.5 W/m²
minimum
(whole body SAR in embryo during day 1-7 and 14-21 of exposure were calculated to be 0.86 W/kg and 0.47 W/kg respectively)
Throughout the entire 21 days of embryonic development, the mean temperature increases in the eggs during the exposure were found to be up to 0.25°C for a power flux density of 1.25 mW/cm² and increased to 2.3°C for 9 mW/cm². The field-induced temperature increase was greatest in the first week of incubation and was less pronounced in the last week before hatching. In both the short- and long-term exposures, the temperature of the exposedtissue and the amniotic fluid reached its maximum approximately 40-50 min after the radiofrequency field was switched on.
Woelders H et al.
(2017):
Study of potential health effects of electromagnetic fields of telephony and Wi-Fi, using chicken embryo development as animal model.
Hirata A et al.
(2010):
Acute dosimetry and estimation of threshold-inducing behavioral signs of thermal stress in rabbits at 2.45-GHz microwave exposure.
Everaert J et al.
(2007):
A Possible Effect of Electromagnetic Radiation from Mobile Phone Base Stations on the Number of Breeding House Sparrows (Passer domesticus).
Balmori A et al.
(2007):
The Urban Decline of the House Sparrow (Passer domesticus): A Possible Link with Electromagnetic Radiation.
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