Title page for etd-0904103-161352


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URN etd-0904103-161352
Author Shu-Hua Hu
Author's Email Address No Public.
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Department Mechanical and Electro-Mechanical Engineering
Year 2002
Semester 2
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title The biological Effect of Mosquito Larvae by Ultrasound Exposure
Date of Defense 2003-07-30
Page Count 137
Keyword
  • biological effect
  • ultrasound
  • mosquito larvae
  • Abstract Abstract
    The objective of this thesis is to study the biological effects of larvae of Aedes albopictus induced by ultrasound exposure. Ultrasound is widely used in medical and biological techniques, most of them are cell killing or tumor eliminating by high-intensity ultrasound. In order to analyse the influences of ultrasound biological effects in vivo, the larvae of mosquito, in this research, were exposed to continuous-wave ultrasound.
    Some preliminary observations were made with 0-day larvae. The oscillation of the trachea in larvae in response to the ultrasound radiation is simulated using Miller’s cylindrical-bubble activation theory. Dimensions of tubes in the respiratory system of larvae were measured by microscope. The resonant frequency of the tracheae were calculated, and its range is about 0.6∼1.5 MHz.
    It was observed that the tracheae in 0-day larvae were ruptured by ultrasound exposure, and the larvae were dead in the duration of growth, some fourth instar larvae failed to mature into pupae. The maximum mosquito larvae mortality was with 1 MHz irradiation, and it’s in good agreement with the resonant frequency calculated in this paper.
    Advisory Committee
  • Ru-Yan Ro - chair
  • Ho-Yin Liu - co-chair
  • Ruey-Chang Wei - co-chair
  • Shiuh-Kuang Yang - advisor
  • Files
  • etd-0904103-161352.pdf
  • indicate in-campus access in a year and off_campus not accessible
    Date of Submission 2003-09-04

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