| Project/Area Number |
07458129
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
環境影響評価(含放射線生物学)
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| Research Institution | Nagoya Institute of Technology |
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Principal Investigator |
IKEDA Tetsuo Nagoya Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (50005253)
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| Co-Investigator(Kenkyū-buntansha) |
CHICHIBU Shiko Kinki University, School of Medicine, Professor, 医学部, 教授 (40088539)
ISHII Naohiro Nagoya Institute of Technology, Faculty of Engineering, Professor, 工学部, 教授 (50004619)
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| Project Period (FY) |
1995 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥7,100,000 (Direct Cost: ¥7,100,000)
Fiscal Year 1997: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1996: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1995: ¥5,000,000 (Direct Cost: ¥5,000,000)
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| Keywords | direct-current magnetic field / accumulation effect / magnetic field / amount of exposure / biological magnetic field effect / wave form of heartbeat / heartbeat / mub fish / 磁場影響蓄積 / 生体影響 |
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| Research Abstract |
This research is about biological effects under the stationary magnetic fields. We examined the biological effects for experiments. We limited the subject to the effects of the heart function so judged the effects of heartbeat and the wave form of the heaitbeat. We have heard that the effects under the magnetic fields are an instant so far and they have neither been accumulated nor memorized. By preliminary experiments the accumulation of effects have possibility so repeated the experiments about accumulation. We put the mud fishes with the bottom up in test tubes and expose stationary magnetic fields from the side under supplying air. We made clear that usual heart beat is 25-26/minute but it decreased to 20-21/minute after exposure. This value constants no matter how strong magnetic fields and how long time for exprosure. The duration needed for the heartbeat to decrease was proportion to the product of the strength of the magnetic field and the exposed time. The strength of the magnetic field is 1-1.3 (Tesla) and 5.7T.Asaresult we found the value of the threshold level is about 1-5th (Tesla・hour).
Besides we found electrocardiogram eliminated noises by averaging and investigated variation of it by exposure. As to amplitude of electrocardiogram after exposure the amplitude decreased, on the other side the width increased. But area of wave form is almost steady and sum of active heart muscles does't change.
According to these results we suggest if period laying under the magnetic field is long and heartbeat and blood pressure are decrease, that has important effects upon biological support. This is entirely new view point. We have considered that effects of magnetic fields were insatant up to now, but according to these results we willbe able to make a new field.
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