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AbstractAbstract
[en] A method is proposed to characterize single-fiber composite interphases from the frequency-domain characteristics of scattered ultrasonic waves, and its feasibility is investigated theoretically. It has been shown that the locations and magnitudes of the peaks and valleys in the frequency domain are affected significantly by the interphase properties, which may indicate the effectiveness of the proposed method. Although the frequency-domain behavior is basically associated with the resonance of the fiber-interphase system, it is not dominantly affected by the scatterer's resonance unlike that in the case of acoustic wave scattering. Therefore, the conventional acoustic resonant scattering theory is not directly applicable to the characterization of composite interphases. In order to solve the inverse problem of predicting the interphase properties from the frequency-domain characteristics of the ultrasonic scattered waves, an artificial neural network has been constructed. This approach has demonstrated reasonable accuracy in most cases considered in this study
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Source
16 refs, 6 figs, 2 tabs
Record Type
Journal Article
Journal
Journal of the Korean Society for Nondestructive Testing; ISSN 1225-7842;
; v. 19(2); p. 100-109

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AbstractAbstract
[en] A review of the recent works on electric field gradient in metals is given. The main emphasis is put on the temperature dependence of the electric field gradient in nonmagnetic metals. Some methods of investigation of this effect using nuclear probes are described. One of them is nuclear accoustic resonance method. (S.B.)
Source
Kulessa, R.; Krolas, K. (eds.); Institute of Nuclear Physics, Krakow (Poland); 357 p; 1979; p. 3-20; 17. Winter School on hyperfine interactions; Bielsko-Biala, Poland; 19 Feb - 2 Mar 1979
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Report
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AbstractAbstract
[en] The major aims in tissue characterization are the differentiation between normal, benign and malignant (primary/metastasic) tissues. Usually the information of standard spin echo images as well as the MR parameters T1, T2 and spin density are used for clinical diagnosis. Pattern recognition methods are applied to improve the specifity of MRI. The variety of all these parameters requires the selection of the parameters containing the relevant diagnostic information. Therefore images with optimum contrast to a given diagnostic task are generated
Primary Subject
Source
Suetens, P.; Young, I.T; p. 150-153; ISBN 0-89252-628-9;
; 1985; p. 150-153; Society of Photo-Optical Instrumentation Engineers; Bellingham, WA (USA); 2. international technical symposium on optical and electro-optical applied science and engineering; Cannes (France); 2-6 Dec 1985

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Book
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AbstractAbstract
No abstract available
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Journal Article
Journal
Journal of Nuclear Science and Technology (Tokyo); v. 11(1); p. 1-7
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Bonetto, Fernando; Anoardo, Esteban; Pusiol, Daniel
Abstracts of the 22. Brazilian national meeting on condensed matter physics1999
Abstracts of the 22. Brazilian national meeting on condensed matter physics1999
AbstractAbstract
No abstract available
Original Title
Induccion de cambios en la dinamica molecular en sistemas complejos a traves de ondas acusticas
Source
Sociedade Brasileira de Fisica, Sao Paulo, SP (Brazil); 488 p; 1999; p. 167; 22. Brazilian national meeting on condensed matter physics; 22. Encontro nacional de fisica da materia condensada; Sao Lourenco, MG (Brazil); 11-15 May 1999; Available from the Library of the Brazilian Nuclear Energy Commission, Rio de Janeiro
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Miscellaneous
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Fischer, E.; Mueller, V.; Schanz, G.
XIXth congress ampere: magnetic resonance and related phenomena1976
XIXth congress ampere: magnetic resonance and related phenomena1976
AbstractAbstract
No abstract available
Source
Deutsche Forschungsgemeinschaft, Bonn-Bad Godesberg (Germany, F.R.); Max-Planck-Gesellschaft zur Foerderung der Wissenschaften e.V., Goettingen (Germany, F.R.); p. 172; 1976; 19. congress ampere: magnetic resonance and related phenomena; Heidelberg, Germany, F.R; 27 Sep - 1 Oct 1976; AED-CONF--76-621-163; 2 refs. Short communication only.
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Miscellaneous
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AbstractAbstract
[en] After a brief summary of the theoretical bases of nuclear acoustic resonance (NAR) and of the experimental techniques used to detect NAR, a detailed review is given of results obtained in the application of NAR to the study of metals, metal hydrides, and alloys. (Auth.)
Source
139 refs.; Published date given as Oct 1983 on journal cover.
Record Type
Journal Article
Journal
Hyperfine Interactions; ISSN 0304-3843;
; v. 14(4); p. 271-313

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AbstractAbstract
[en] We have performed detailed numerical calculations for nuclear-acoustic-resonance line shapes appropriate for Ta where the spin relaxation is dominated by mobile hydrogen impurities. These calculations include intraspin cross relaxation due to defect-generated static electric field gradients. The calculated line shapes show a large amount of structure and are in almost complete quantitative agreement with recent experimental results
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Record Type
Journal Article
Journal
Phys. Rev., B; v. 14(9); p. 4221-4223
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AbstractAbstract
No abstract available
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Journal Article
Journal
Anal. Chem; v. 44(5); p. 113R-121R
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AbstractAbstract
No abstract available
Original Title
Spektroskopia jadrowego rezonansu kwadrupolowego - NQR
Record Type
Journal Article
Journal
Postepy Fizyki; v. 23 p. 7-24
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