Zobrazeno 1 - 10
of 347
pro vyhledávání: '"K.-E. Peiponen"'
Autor:
S. Savenkov, A. Priezzhev, Ye. Oberemok, P. Silfsten, T. Ervasti, J. Ketolainen, K.-E. Peiponen
Publikováno v:
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, Vol 89, Iss S1, Pp C1V89S1P081-1 (2011)
In this paper, we apply Mueller polarimetry to study different samples of porous media compacted as tablets from a pharmaceutical excipient microcrystalline cellulose. We measured the Mueller matrices of the samples with the home made polarimeter usi
Externí odkaz:
https://doaj.org/article/606b586980fb4977ab685ce89c18e7ca
Akademický článek
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Autor:
Mohammed Al-Sharabi, Jarkko Ketolainen, J. A. Zeitler, A-P. Karttunen, K.-E. Peiponen, Cathy J. Ridgway, Daniel Markl, Patrick A.C. Gane, Prince Bawuah, T. Mudley, Thomas Rades
Publikováno v:
Al-Sharabi, M, Mudley, T, Markl, D, Bawuah, P, Karttunen, A P, Ridgway, C J, Gane, P A C, Ketolainen, J, Peiponen, K E, Rades, T & Zeitler, J A 2019, Difficulties of Subsurface Liquid Front Tracking in Porous Media with Terahertz Pulsed Imaging . in 2019-44th International Conference on Infrared, Millimeter, and Terahertz Waves ., 8874143, IEEE, International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, vol. 2019-September, 44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019, Paris, France, 01/09/2019 . https://doi.org/10.1109/IRMMW-THz.2019.8874143
Terahertz pulsed imaging (TPI) coupled with a customised flow cell has previously been used successfully to study liquid transport in porous media, such as powder compacts. In some samples, the tracking of the liquid front remains challenging when th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59c25e54109562997ba9631da20da898
https://curis.ku.dk/portal/da/publications/difficulties-of-subsurface-liquid-front-tracking-in-porous-media-with-terahertz-pulsed-imaging(4bd46e34-9489-405b-ab9a-c03b5fc71ad2).html
https://curis.ku.dk/portal/da/publications/difficulties-of-subsurface-liquid-front-tracking-in-porous-media-with-terahertz-pulsed-imaging(4bd46e34-9489-405b-ab9a-c03b5fc71ad2).html
Autor:
J. Axel Zeitler, K.-E. Peiponen
Theory of terahertz (THz) spectroscopy is considered using general dispersion models for interaction of electromagnetic radiation with a medium. Key concepts exploited are the frequency-dependent complex refractive index and reflection coefficient, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9643cfc5fc8903096a70041cec727d9
https://doi.org/10.1016/b978-0-12-409547-2.12085-2
https://doi.org/10.1016/b978-0-12-409547-2.12085-2
Publikováno v:
Talanta. 115:68-73
The knowledge of the refractive index of a particle is important in sensing and imaging applications, e.g., in biology, medicine and process industry. The refractive index of tiny solid particles such as microsize particles can be determined by the s
Autor:
Alexander V. Priezzhev, Tuomas Ervasti, Pertti Silfsten, Ye. Oberemok, Jarkko Ketolainen, Sergey N. Savenkov, K.-E. Peiponen
Publikováno v:
Journal of Quantitative Spectroscopy and Radiative Transfer. 113:2503-2511
In this paper Mueller polarimetry is applied to study the samples with different porosity compacted from microcrystalline cellulose. We measure the whole Mueller matrices of the samples as a function of the incident angle at a wavelength of 632.8 nm.
Akademický článek
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Akademický článek
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Autor:
Martti Toivakka, Mikko Juuti, Martti Silvennoinen, K.-E. Peiponen, Hanna Koivula, Douglas W. Bousfield, Janet Preston
Publikováno v:
Koivula, H, Juuti, M, Bousfield, D, Preston, J, Silvennoinen, M, Peiponen, K-E & Toivakka, M 2009, ' Comparison of dynamic print gloss measurement techniques ', Tappi Journal, vol. 8, no. 2, pp. 19-28 . < https://imisrise.tappi.org/TAPPI/Products/07/CTG/07CTG45.aspx >
University of Helsinki
Åbo Akademi University
Scopus-Elsevier
University of Helsinki
Åbo Akademi University
Scopus-Elsevier
Well-defined optical properties are essential in determining the quality of printed papers. The mea-surement of optical properties, such as print gloss, as a function of time provides a means of studying ink-setting behavior and paper-ink interaction
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects. 317:658-665
Print mottling has been widely studied over the years and several reasons for uneven print have been pointed out. Factors affecting mottling are, e.g., heterogeneity of the coating layer, uneven absorption of the ink, ink properties and printing cond