Extrinsic parameters of amplitude were 22.8, 68.4 and 114lm for 10min of ultrasound treatment which corresponded to ultrasound intensities of 7.00, 35.61 and 75.78W cm2, respectively.
Control samples were soaked in distilled water for 10 min without any ultrasound pre-treatment.
From temperature versus time data, the initial temperature rise dT/dt was determined by polynomial curve fitting.
The ultrasound power P was determined using Eq