この研究は、大腸菌（Escherichia coli）のpolA +およびpolA-株に、パルス変調マイクロ波（8.8GHz、パルス周波数1000Hz（パルス幅 1μs）、SARは40W / kg）のばく露を与え、細胞増殖への影響を調べた。マイクロ波ばく露による細胞培養物の温度上昇は7℃であった。同じ温度上昇を熱処理で与えた細胞培養物と比較して、マイクロ波ばく露細胞培養物での増殖速度に有意差はなかった、と報告している。
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To compare growth rate of Escherichia coli cultures exposed to high-intensity pulsed 8.8 GHz-microwaves and conventional heating.
|ばく露時間||continuous for 2, 5, 10, or 15 h|
|Pulse width||1 µs|
|Duty cycle||0.1 %|
|Repetition frequency||1,000 Hz|
|Distance between exposed object and exposure source||50 cm|
|チャンバの詳細||Two foamed polystyrene chambers were supplied with the same temperature-controlled air (35.2 °C), one for exposure in the anechoic room and the other one for control.|
|ばく露装置の詳細||Cell suspensions (3 ml, about 3 mm thick) were placed in 35-mm plastic Petri dishes sealed in Saran wrap and exposed from above.|
|Additional information||For conventional heating, samples were incubated at 42.2 °C for 0, 2, 5, 10, and 15 h. Control samples were also incubated at 35.2 °C for up to 15 h.|
8.8 GHz pulsed microwave radiation has no effect on the growth of E. coli beyond that associated with temperature increase.