Estimating annulus sealing properties using the flexural wave spectrum in pitch-catch well-logging.

Autor: Thygesen SB; Department of Informatics, University of Oslo, P.O. Box 1080, Oslo, NO-0316, Norway; Equanostic AS, Klaus Torgårds vei 3, Oslo, NO-0372, Norway. Electronic address: sandet@ifi.uio.no., Sirevaag TL; Equanostic AS, Klaus Torgårds vei 3, Oslo, NO-0372, Norway. Electronic address: tore@equanostic.com., Näsholm SP; Department of Informatics, University of Oslo, P.O. Box 1080, Oslo, NO-0316, Norway. Electronic address: svenpn@ifi.uio.no.

Publikováno v: Ultrasonics [Ultrasonics] 2025 Feb; Vol. 146, pp. 107491. Date of Electronic Publication: 2024 Oct 28.

Wave equations for porous media described by the Biot model.

Autor: Chandrasekaran SN; Department of Informatics, University of Oslo, P.O. Box 1080, Oslo, 0316, Norway., Näsholm SP; Department of Informatics, University of Oslo, P.O. Box 1080, Oslo, 0316, Norway., Holm S; Department of Physics, University of Oslo, P.O. Box 1048, Oslo, 0316, Norway.

Publikováno v: The Journal of the Acoustical Society of America [J Acoust Soc Am] 2022 Apr; Vol. 151 (4), pp. 2576.

Estimating tropospheric and stratospheric winds using infrasound from explosions.

Autor: Blixt EM; NORSAR, Gunnar Randers vei 15, 2027 Kjeller, Norway., Näsholm SP; NORSAR, Gunnar Randers vei 15, 2027 Kjeller, Norway., Gibbons SJ; NORSAR, Gunnar Randers vei 15, 2027 Kjeller, Norway., Evers LG; Delft University of Technology, Applied Geophysics & Petrophysics, Delft, Netherlands., Charlton-Perez AJ; Department of Meteorology, University of Reading, Reading, United Kingdom., Orsolini YJ; Norwegian Institute for Air Research, Norway., Kværna T; NORSAR, Gunnar Randers vei 15, 2027 Kjeller, Norway.

Publikováno v: The Journal of the Acoustical Society of America [J Acoust Soc Am] 2019 Aug; Vol. 146 (2), pp. 973.

Bridging Three Orders of Magnitude: Multiple Scattered Waves Sense Fractal Microscopic Structures via Dispersion.

Autor: Lambert SA; Centre de Recherche sur l'Inflammation (CRI), UMR 1149 Inserm-Université Paris Diderot, Paris 7, France.; King's College London, BHF Centre of Excellence, Division of Imaging Sciences and Biomedical Engineering, St. Thomas' Hospital, London SE1 7EH, United Kingdom., Näsholm SP; NORSAR, P.O. Box 53, N-2027, Kjeller, Norway., Nordsletten D; King's College London, BHF Centre of Excellence, Division of Imaging Sciences and Biomedical Engineering, St. Thomas' Hospital, London SE1 7EH, United Kingdom., Michler C; King's College London, BHF Centre of Excellence, Division of Imaging Sciences and Biomedical Engineering, St. Thomas' Hospital, London SE1 7EH, United Kingdom., Juge L; Neuroscience Research Australia, Randwick, Sydney, NSW 2031, Australia.; School of Medical Sciences, University of New South Wales, Sydney, NSW 2052, Australia., Serfaty JM; CHU Xavier Bichat, Université Paris Diderot, APHP, U698 INSERM, CEFI, Paris 7, France., Bilston L; Neuroscience Research Australia, Randwick, Sydney, NSW 2031, Australia.; Prince of Wales Clinical School, University of New South Wales, Sydney, NSW 2052, Australia., Guzina B; Department of Civil, Environmental & Geo-Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA., Holm S; Department of Informatics, University of Oslo, P.O. Box 1080 Blindern, N-0316 Oslo, Norway., Sinkus R; King's College London, BHF Centre of Excellence, Division of Imaging Sciences and Biomedical Engineering, St. Thomas' Hospital, London SE1 7EH, United Kingdom.

Publikováno v: Physical review letters [Phys Rev Lett] 2015 Aug 28; Vol. 115 (9), pp. 094301. Date of Electronic Publication: 2015 Aug 26.

Comparison of fractional wave equations for power law attenuation in ultrasound and elastography.

Autor: Holm S; Department of Informatics, University of Oslo, Oslo, Norway. Electronic address: sverre@ifi.uio.no., Näsholm SP; Norsar, Kjeller, Norway.

Publikováno v: Ultrasound in medicine & biology [Ultrasound Med Biol] 2014 Apr; Vol. 40 (4), pp. 695-703. Date of Electronic Publication: 2014 Jan 13.