2001 Fiscal Year Final Research Report Summary
ACTIVE FREAZING AND MELTING CONTROLE OF BIOLOGICAL TISSUE
| Project/Area Number |
11650239
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Thermal engineering
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| Research Institution | KURUME NATIONAL COLLEGE OF TECHNOLOGY |
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Principal Investigator |
HIRAHAYA Kunio KURUME NATIONAL COLLEGE OF TECHNOLOGY, PROFESSOR, 機械工学科, 教授 (40037958)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUMOTO Kenichi KURUME NATIONAL COLLEGE OF THECHNOLOGY, PROFESSOR, 制御情報工学科, 教授 (20037857)
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| Project Period (FY) |
1999 – 2001
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| Keywords | FREEZING / MELTING / ACTIVE CONTROL / BIOLOGICAL TISSUE / ULTRASONIC VIBRATION |
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| Research Abstract |
The effects of ultrasonic vibration on freezing of onion cells were investigated to develop the active freezing control of biological tissue. The first stage, onion epidermal cells were immersed in the flowing cooling liquid which was immiscible to water. Under various cooling rate, there were not very much change in freezing temperature of the onion cells. When the irradiating rate of ultrasonic vibration exceeded a certain degree, freezing temperature of the onion cells rised about 5℃ and intracellular flow induced by ultrasonic vibration were observed. The second stage, to investigate the freezing control for three dimensional large scale biological tissue, onion bulb cells were used. Using the same freezing method for the onion epidermal cells, surface and internal temperature changes of the bulb cells were measured. The temperature changes were observed very much difference between the case of irradiating ultrasonic vibration and no irradiating case.
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