Search Results - "Kazys, J"

Air-Coupled Reception of a Slow Ultrasonic A0 Mode Wave Propagating in Thin Plastic Film by Kazys, Rymantas J., Vilpisauskas, Almantas

“…At low frequencies, in thin plates the phase velocity of the guided A0 mode can become slower than that of the ultrasound velocity in air. Such waves do not…”
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Application of Air-Coupled Ultrasonic Arrays for Excitation of a Slow Antisymmetric Lamb Wave by Kazys, Rymantas J, Vilpisauskas, Almantas, Sestoke, Justina

“…Air-coupled excitation and reception of ultrasonic guided waves is already used for non-destructive testing and evaluation (NDT & E). Usually for air-coupled…”
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Air-Coupled Low Frequency Ultrasonic Transducers and Arrays with PMN-32%PT Piezoelectric Crystals by Kazys, Rymantas J, Sliteris, Reimondas, Sestoke, Justina

“…Air-coupled ultrasonic techniques are being increasingly used for material characterization, non-destructive evaluation of composite materials using guided…”
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Fish assemblages under climate change in Lithuanian rivers by Kriaučiūnienė, J., Virbickas, T., Šarauskienė, D., Jakimavičius, D., Kažys, J., Bukantis, A., Kesminas, V., Povilaitis, A., Dainys, J., Akstinas, V., Jurgelėnaitė, A., Meilutytė-Lukauskienė, D., Tomkevičienė, A.

“…Alterations of abiotic factors (e.g., river water temperature and discharge) will definitely affect the fundamental processes of aquatic ecosystems. The…”
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Air-Coupled Ultrasonic Receivers with High Electromechanical Coupling PMN-32%PT Strip-Like Piezoelectric Elements by Kazys, Rymantas J, Sliteris, Reimondas, Sestoke, Justina

“…For improvement of the efficiency of air-coupled ultrasonic transducers PMN-32%PT piezoelectric crystals which possess very high piezoelectric properties may…”
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Air-Coupled Excitation of a Slow A₀ Mode Wave in Thin Plastic Films by an Ultrasonic PMN-32%PT Array by Kazys, Rymantas J, Mazeika, Liudas, Sliteris, Reimondas, Sestoke, Justina

“…Ultrasonic non-destructive testing techniques (NDT) based on the application of guided waves are already used for inspection of plate-type structures made of…”
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Recent aridity trends and future projections in the Nemunas River basin by Stonevičius, Edvinas, Rimkus, E., Kažys, J., Bukantis, A., Kriaučiūnienė, J., Akstinas, V., Jakimavičius, D., Povilaitis, A., Ložys, L., Kesminas, V., Virbickas, T., Pliūraitė, V.

“…Changes in the reference evapotranspiration (ET₀) and precipitation (P) patterns in the Nemunas River basin (Baltic Sea catchment) are evident today and will…”
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Projection of Lithuanian river runoff, temperature and their extremes under climate change by Šarauskienė, D., Akstinas, V., Kriaučiūnienė, J., Jakimavičius, D., Bukantis, A., Kažys, J., Povilaitis, A., Ložys, L., Kesminas, V., Virbickas, T., Pliuraitė, V.

“…The aim of this research is to analyse and project the effects of changing climate on Lithuanian river runoff and water temperature. Climate change is expected…”
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Climate induced changes of Lithuanian rivers runoff in 1960–2009 by Stonevičius, E, Valiuškevičius, G, Rimkus, E, Kažys, J

“…The primary objective of this study was the evaluation of runoff regime changes over the last 50 years in Lithuanian rivers. These changes were compared with…”
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Comparative Analysis of Ultrasonic NDT Techniques for the Detection and Characterisation of Hydrogen-Induced Cracking by Kažys, Rymantas J., Mažeika, Liudas, Samaitis, Vykintas, Šliteris, Reimondas, Merck, Peter, Viliūnas, Žydrius

“…The article is devoted to the investigation of ultrasonic inspection techniques suitable for detecting hydrogen-induced cracking (HIC) and a high-temperature…”
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Ultrasonic fields radiated through matching layers with nonparallel boundaries by Kazys, R.J, Mazeika, L, Jasiuniene, E

“…In the case of ultrasonic measurements in aggressive media piezoelectric elements of ultrasonic transducers are separated from a medium by thick protective…”
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The atmospheric circulation patterns during dry periods in Lithuania by Rimkus, E, Kazys, J, Valiukas, D, Stankunavicius, G

“…The atmospheric circulation patterns during dry periods in Lithuania are presented.The research covers the period from 1961 to 2010. Atmospheric circulation…”
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Temporal variation of extreme precipitation events in Lithuania by Rimkus, E, Kazys, J, Bukantis, A, Krotovas, A

“…Heavy precipitation events in Lithuania for the period 1961-2008 were analysed. The spatial distribution and dynamics of precipitation extremes were…”
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Air-Coupled Reception of a Slow Ultrasonic A 0 Mode Wave Propagating in Thin Plastic Film by Kazys, Rymantas J, Vilpisauskas, Almantas

“…At low frequencies, in thin plates the phase velocity of the guided A mode can become slower than that of the ultrasound velocity in air. Such waves do not…”
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Studies of nitrogen metabolism using carbon-13 NMR spectroscopy. 2. Incorporation of L-[guanido-13C,15N2]arginine and DL-[guanido-13C,2-15N]arginine into streptothricin F by Gould, Steven J, Martinkus, Kazys J, Tann, Chou-Hong

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Biosynthesis of streptothricin F. 1. Observing the interaction of primary and secondary metabolism with [1,2-13C2]acetate by Gould, Steven J, Martinkus, Kazys J, Tann, Chou-Hong

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Transients in piezoelectric transducers of finite dimensions by KAZYS, R. J, MAZEIKA, L

“…Transients in piezoelectric transducers using spatial impulse responses and a finite-element method have been studied. The developed calculation procedure…”
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Isolation of Paracoccus denitrificans cytochrome cd1: comparative kinetics with other nitrite reductases by Timkovich, R, Dhesi, R, Martinkus, K J, Robinson, M K, Rea, T M

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Simulation of ultrasonic fields in composite media with planar boundaries by Mažeika, Liudas, Kažys, Rymantas J.

“…In this paper the method and fast algorithm for simulation of ultrasonic fields exited by the direct or angular transducers in media with a few thick layers…”
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Application of ultrasound reflection tomography for nondestructive evaluation of objects with a complex geometry by Kažys, Rymantas J., Mažeika, Liudas, Jasiūnienė, Elena

“…In the case of solid objects with complex geometry, conventional ultrasound tomography techniques tend not to be efficient enough. The objective of the paper…”
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