|Author's Email Address
||This thesis had been viewed 5107 times. Download 29 times.|
||Mechanical and Electro-Mechanical Engineering|
|Type of Document
||The biological Effect of Mosquito Larvae by Ultrasound Exposure|
|Date of Defense
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.
||Ru-Yan Ro - chair|
Ho-Yin Liu - co-chair
Ruey-Chang Wei - co-chair
Shiuh-Kuang Yang - advisor
indicate in-campus access in a year and off_campus not accessible|
|Date of Submission