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　　Radiation exists throughout the entire universe. Radiation protection is an applied discipline that studies the protection of human and other biological populations from or to a lesser extent from radiation hazards. Radiation is divided into two ca...

　　Dose limit 5-year average (milliohms/year) Any annual value (milliohms/year)　　Occupational exposure 20 50　　Public exposure 15　　Note: The standards issued by our country will be equivalent to the international basic safety standards.　　Occupational e...

1. Radiation hazards　　At present, electromagnetic radiation pollution has become the fourth largest environmental pollution after water, air, and noise. Generally, exposure to electromagnetic radiation pollution can cause central nervous system probl...

　　The correct protective action in the event of a nuclear accident leading to the leakage of radioactive materials is:　　(1) Not trusting rumors;　　(2) Stay calm and follow instructions;　　(3) After hearing the alarm, enter the room, close the doors and...

　　On November 10th from 14:20 to 17:00, China successfully held its first national nuclear accident emergency exercise, codenamed "Shendun-2009". The Nuclear and Radiation Safety Center, as the emergency technology center for nuclear and radiation ac...

　　The mechanisms by which electromagnetic radiation harms the human body mainly include thermal effects, non thermal effects, and cumulative effects.　　1. Thermal effect: More than 70% of the human body is water, and water molecules rub against each o...