Zobrazeno 1 - 10
of 59
pro vyhledávání: '"T I Francis"'
Autor:
E. Obojoh, T. I. Francis-Akilaki
Publikováno v:
Journal of Applied Sciences and Environmental Management, Vol 28, Iss 4 (2024)
The objective of this paper was to evaluate the effect of some cutting parameters on surface finish of bright mild steel (BMS). Samples were cut into the required piece with dimension 50mm x 200mm and the turning operation done using a tungsten carbi
Externí odkaz:
https://doaj.org/article/c1b8dd93e8a445d9996d31b6d9fb48e3
Autor:
John K. Horne, D. Benjamin Reeder, David A. Demer, Natalia Gorska, Kouichi Sawada, Benjamin A. Jones, Dezhang Chu, David T. I. Francis, Gavin J. Macaulay, Timothy K. Stanton, Andone C. Lavery, J. Michael Jech
Publikováno v:
The Journal of the Acoustical Society of America. 138(6)
The article of record as published may be found at https://doi.org/10.1121/1.4937607 Analytical and numerical scatteringmodels with accompanying digital representations are used increasingly to predict acoustic backscatter by fish and zooplankton in
Publikováno v:
Journal of Engineering Mathematics. 53:99-112
Cement is used in the oil industry to line oil wells. The major com- ponents of oilwell cement are tricalcium silicate (C3S), dicalcium silicate (C2S), tricalcium aluminate (C3A) and calcium sulphate (CaSO4). With the exception of C2S, each of these
Autor:
Kenneth G. Foote, David T. I. Francis
Publikováno v:
Bioacoustics. 12:262-265
Autor:
David T. I. Francis
Publikováno v:
The Journal of the Acoustical Society of America. 93:1700-1709
A method of overcoming the problem of nonuniqueness in the discretized Helmholtz integral equation is described, based on a partial application of the Helmholtz gradient formulation of Burton and Miller [Proc. R. Soc. London, Ser. A 323, 201–210 (1
Publikováno v:
OCEANS 2007.
Publikováno v:
OCEANS 2007.
Deep-sea flotation spheres consisting of an air-filled ceramic shell are made to a very high tolerance, suggesting their application as sonar targets, possibly for calibration use. A previous study documented preliminary measurements made on hollow a
Publikováno v:
OCEANS 2007 - Europe.
The target strengths of hollow ceramic flotation spheres manufactured by DeepSea Power and Light, Inc., and tested to a pressure equivalent of 12,000 m have been measured as a function of frequency over the bands 10-150 kHz. The spheres are made of a
Publikováno v:
The Journal of the Acoustical Society of America
Journal home page: http://scitation.aip.org/jasa/ The problem of calibrating parametric sonar systems at low difference frequencies used in backscattering applications is addressed. A particular parametric sonar is considered: the Simrad TOPAS PS18 P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::960d5d99de9d39ae5d7b7ed32241ea77
http://hdl.handle.net/11250/108703
http://hdl.handle.net/11250/108703
Autor:
Kenneth G. Foote, David T. I. Francis
Publikováno v:
The Journal of the Acoustical Society of America
Journal home page: http://scitation.aip.org/jasa/ The depth dependence of fish target strength has mostly eluded experimental investigation because of the need to distinguish it from depth-dependent behavioral effects, which may change the orientatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::209d64a6f4cf53ccf894b3a938f2f44c
http://hdl.handle.net/11250/108011
http://hdl.handle.net/11250/108011