Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Ricardo Arizaga"'
Autor:
Ricardo Arizaga
Publikováno v:
Dynamic Laser Speckle and Applications ISBN: 9781315219080
Dynamic Laser Speckle and Applications
Dynamic Laser Speckle and Applications
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74de8c90e7f286fcab02093bee87f5b1
https://doi.org/10.1201/9781315219080-4
https://doi.org/10.1201/9781315219080-4
Publikováno v:
Signal Processing. 90:1623-1630
Dynamic speckle patterns are generated by laser light scattering on surfaces that exhibit some kind of activity, due to physical or biological processes. The characterization of this process is carried out by studying the texture changes of auxiliary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0ee591ff62401aa5651eb4ba624cf13
https://doi.org/10.1016/j.sigpro.2009.11.010
https://doi.org/10.1016/j.sigpro.2009.11.010
Publikováno v:
European Journal of Physics. 31:115-127
The term 'apparent depth' is commonly treated in textbooks as an issue easily understandable from the point of view of paraxial optical geometrical optics. Nevertheless, everyday life tells us that most of the time the observation of objects immersed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::269d05d02dff93944b61881e388006ad
https://doi.org/10.1088/0143-0807/31/1/011
https://doi.org/10.1088/0143-0807/31/1/011
Publikováno v:
Optics Communications. 282:3693-3700
We propose a numerical model to describe dynamic speckle phenomena. It includes free space propagation, focused and defocused image situations and the effect of the illuminating wavefront phase. We test the model by verifying its statistics and using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91de7426b4ccaf1ea027d85c4890ba14
https://doi.org/10.1016/j.optcom.2009.06.022
https://doi.org/10.1016/j.optcom.2009.06.022
Autor:
Nelly Cap, Paula Andrea Faccia, Oscar Ricardo Pardini, Marcelo Trivi, Ricardo Arizaga, Javier Ignacio Amalvy, Eduardo Emilio Grumel
Publikováno v:
Progress in Organic Coatings. 64:350-355
This work is part of studies of drying of paints using dynamic speckle interferometry (DSI), a technique based on the use of laser light. DSI is a non-invasive method that does not disturb the drying process. The sample is illuminated by a laser ligh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e86e925c1880f7a44ff0b14fc4a9821
https://doi.org/10.1016/j.porgcoat.2008.07.016
https://doi.org/10.1016/j.porgcoat.2008.07.016
Publikováno v:
European Journal of Physics. 29:967-975
Light from a rough sample surface illuminated with a laser consists of a speckle pattern. If the surface evolves with time, the pattern becomes dynamic, following the activity of the sample. This phenomenon is used both in research and in industry to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5c326329ba2c095d3de12d7ca4c2061
https://doi.org/10.1088/0143-0807/29/5/010
https://doi.org/10.1088/0143-0807/29/5/010
Autor:
Giovanni Francisco Rabelo, Marcelo Trivi, Nelly Cap, Roberto Alves Braga Júnior, Bruno Oliveira Silva, Adilson Machado Enes, Graham W. Horgan, Héctor Rabal, Ricardo Marques Costa, Ricardo Arizaga
Publikováno v:
Optics and Lasers in Engineering. 45:390-395
This paper presents an analysis of the time history of speckle patterns (THSP) that is one of the most used procedures to evaluate the biological activity by biospeckle images. THSPs generated by numerical simulations, obtained in a controlled drying
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0cdccc98ec3362434b5a6011bfa2498
https://doi.org/10.1016/j.optlaseng.2006.07.002
https://doi.org/10.1016/j.optlaseng.2006.07.002
Autor:
Giovanni Francisco Rabelo, Luis R. Granato, José da Cruz Machado, Roberto A. Braga, Marcelo Trivi, Héctor Rabal, Ederson F. Santos, Ricardo Arizaga
Publikováno v:
Biosystems Engineering. 91:465-469
This research presents results obtained from the application of biospeckle phenomena to detect fungi in beans (Phaseolus vulgaris L.). The biospeckle is a phenomenon produced naturally when biological material is illuminated by laser light. If it is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f4bcbdc7d0c29046296ea97e4bc5261
https://doi.org/10.1016/j.biosystemseng.2005.05.006
https://doi.org/10.1016/j.biosystemseng.2005.05.006
Publikováno v:
Optics Communications. 246:219-228
Dynamic speckle has been used in some biologic and industrial applications for the characterization of transient processes. The time evolution of processes that show the dynamic speckle phenomenon are here characterized using wavelets based entropy a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8235e8e875e6a88c35dd41230c2f804
https://doi.org/10.1016/j.optcom.2004.10.054
https://doi.org/10.1016/j.optcom.2004.10.054
Autor:
J. A. Pomarico, C. Lanusse, L. Alvarez, Marcelo Trivi, Ricardo Arizaga, Héctor Rabal, L. Mottier, C. Saumell, H. O. Di Rocco
Publikováno v:
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Universidad Nacional de La Plata
instacron:UNLP
The work reported here describes the application of the optical technique known as dynamic speckle interferometry to evaluate the motility of nematode parasites exposed to different anthelmintic drugs. This technique, a well proven tool for assessing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aeeddb7e44e2e6bd9b11c1a6d944ad29
https://doi.org/10.1007/s00249-004-0413-4
https://doi.org/10.1007/s00249-004-0413-4