Now showing items 1-5 of 5
Estimation of vessel wall compliance using acoustic reflectometry
This thesis focuses on the estimation of rubber tube wall compliance using a pulse echo-acoustic reflectometry technique. Five rubber latex tubes of different thicknesses were studied using a transient acoustic pulse, ...
An impermeable membrane design for hearing aid applications
A common problem when using a hearing aid is the accumulation of earwax, dust and water in the conduit that transmits the sound towards the ear. Hearing aids are damaged when unqualified people try to remove these foreign ...
Design of pvdf transducers for acoustic reflectometry applications
Nine polyvinylidene fluoride (PVDF) membrane transducers were developed to be used as receivers and transmitters in underwater applications, such as in acoustic reflectometry. The design requirements were oriented to comply ...
Guidance and monitoring of liquid-filled tubes using time domain acoustic reflectometry
Time domain acoustic reflectometry is proposed in this research as a method to detect atherosclerosis, estimating the location and extension of arterial obstructions by determining what is ahead of the catheter tip (“forward ...
Electrical studies of methacrylic acid hydrogels molecularly imprinted with hydrocortisone
Electrical studies of cross-linked methacrylic acid hydrogels molecularly imprinted with hydrocortisone were conducted by means of electrical resistivity estimates. A factorial experimental design method was followed to ...