Vol. 31 No. 1 (1999)

Published: 1999-06-07

ULTRASOUND IMAGING

The methods of visualisation of acoustical fields

S. Sajauskas

7-14
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ULTRASOUND MEASUREMENTS AND INSTRUMENTS

An experimental investigation of the ultrasonic system for measurement velocity of gas flows

J. Butkus, L. Jakevicius, O. Tumsys

15-18
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Synthetic aperture focusing technique (SAFT) piezotransducers

A. Vladisauskas

19-22
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Improvement of the efficiency of a bimorph rectangular piezoelectric transducer

A. Petrauskas, P. Razutis

23-24
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Development of ultrasonic method for quality estimation of porous products

V. Minialga, A. Petrauskas, L. Jakubauskiene

25-27

WAVE PROPAGATION AND VIBRATION

Estimation of sound power of centrifugal machines based on sound intensity measurements

D. Guzas, E. Jotautiene

28-31
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PHYSICAL ACOUSTICS

Aging of ultrasound cleaning mixtures

E. Garska, R. Giriuniene

32-34
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ULTRASOUND IN BIOLOGY

Method of investigation of non-stationary biological fluids

A. Voleisis, R. Kazys, L. Mazeika, R. Sliteris, B. Voleisiene

35-39
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Investigation of process of blood coagulation by ultrasound impulsive coagulograph

A. Mongirdiene, P. Grybauskas

40-42
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CHRONICLE

70th anniversary of dr. habil. D. Guzas

R. Kazys

43
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Lithuanian acousticians: activities and future plans

D. Guzas

44-50
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PRO MEMORIA

Obituary of prof. V. Ilgunas

A. Tamasauskas

51
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