Increase Activity Cavitations in Liquids and Melts at Ultrasonics Processing

Increase In Activity And Learning Outcomes In Pharmacy Mathematics With Jigsaw Cooperative Learning Model At Pharmacy Academy Of Dwi Farma

Introduction: In Pharmacy Diploma Program, mathematics is known as pharmaceutical mathematics. Due to the importance of pharmaceutical mathematics in practice, it is important to have a basic mathematical skill as a basis in calculations in pharmaceutical science. Therefore, it is necessary to create a lecturing condition that enables students more active in understanding the lessons. This rese...

Laser-Based Ultrasonics: Applications at APL

onventional ultrasonic techniques have long been recognized for their usefulness in the nondestructive testing of materials and structures. These techniques, based on launching ultrasonic or high-frequency acoustic waves into a material using a coupled transducer, enable the probing of certain material properties. By inducing surface or bulk waves into a material, several material properties, s...

Mathematical modeling of laser ablation in liquids with application to laser ultrasonics.

The use of laser ablation as a means of generating ultrasonic waves in liquid metals is studied in this paper. A mathematical model for predicting the onset of ablation is developed, as is a model of the ablation process based on steady state, one-dimensional gas dynamics in which the vapor phase is treated as an ideal gas. The results of this model are then used in a quasi-two-dimensional mode...

Non-Newtonian effects in silicate liquids and crystal bearing melts: Implication for magma dynamics

Invited paper presented at the Ultrasonics International ’ 99 and 1999

Ultrasound has been used intensively for the last 15 years for studying the haemodynamics of the human body. Systems for determining both the velocity distribution at one point of interest (spectral systems) and for displaying a map of velocity in real time have been constructed. A number of schemes have been developed for performing the estimation, and the various approaches are described. The...