SW3 7 19_no_1

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SW3 7 19_no_1

  1. 1. Possible health effects of nuclear crisis s1180028 Naohiro Nakamura
  2. 2. Overview● Introduction● Is all radiation harmful?● The effects of ionizing radiation on the human body - 1● The effects of ionizing radiation on the human body - 2● The biological risk of exposure● Conclusion
  3. 3. IntroductionA massive earthquake struck eastern Japan onMarch 11.And gigantic tsunami attack coastal area onJapan.These destroyed the Fukushima No.1 powerplant.And power plant continues to emit radioactiveingredient.How would the radioactive ingredient affect our
  4. 4. Is all radiation harmful?The answer is No.There are two types of radiation: ● non-ionizing ● ionizingNon-ionizing radiation is safe to human body.Ionizing radiation is much more dangerousbecause it does break chemical bones and thusdoes cause cancer.
  5. 5. The effects of ionizing radiation on thehuman body - 1That depends on how long you are exposed.Early symptom ● nausea ● fatigueAfter early symptom● hair loss● diarrhea
  6. 6. The effects of ionizing radiation on thehuman body - 2The next stage ● destruction of the intestinal lining ● worse diarrhea and dehydration ● central nervous system damageFinally ● loss of consciousness ● death
  7. 7. The biological risk of exposureThe biological risk of exposure to radiation ismeasured in sieverts.An exposure of 500,000 microsieverts ● lead to nausea and fatigue within hoursAn exposure of 750,000 microsieverts ● hair loss within two or three weeksAn exposure of 1 million microsieverts ● hemorrhageAn exposure of 4 million microsieverts ● death
  8. 8. Conclusion● There are two types of radiation: non- ionizing and ionizing.● Produce different symptoms by amount of radiation.● It is preferable to avoid to receive radiation.

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