Vol. 41 No. 4 (2001)

Published: 2001-12-19

ULTRASOUND MEASUREMENTS AND INSTRUMENTS

Analysis of ultrasound interferometricdisplacement measurement method

R. Kazys, L. Mazeika, R. Dicpetris

7-11
The method for the calculation of ultrasonic fields of planar free form transducers

L. Mazeika, V. Cicenas

12-17
Investigation of echolocational ultrasonic methods by increasing accuracy in level measurements

A. Petrauskas, P. Razutis

18-21
Investigation of uncertainty components of ultrasonic system for gas flow velocity measurement

O. Tumšys

22-24

APPLICATIONS IN BIOLOGY AND MEDICINE

Echographic differentiation of malignant intraocular tumors

D. Šebeliauskienė, A. Paunksnis

25-28
Color Doppler imaging of the ophthalmic artery in early age-related maculopathy

A. Cimbalas, A. Paunksnis, V. Brazdžiukas

29-31

WAVE PROPAGATION AND DIFFRACTION

Theoretical investigation of surface acoustic waves, propagating on periodically corrugated surfaces of GaAs

E. Urba, R. Miškinis

32-36
The way of reduction of low-frequency noise in the ducts and its practical application

D. Guzas

37-44
Reduction of acoustic emission from the curved duct

E. Jotautienė, S. Merkevičius

45-49
Investigation of thickness and radial vibration modes interaction for disc type piezoelements

D. Kybartas, A. Lukosevicius

50-55