Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Ljuan L. Gurdev"'
Autor:
Dimitar V. Stoyanov, Orlin I. Vankov, Ljuan L. Gurdev, Tanja N. Dreischuh, Lachezar A. Avramov
Publikováno v:
Journal of Modern Optics. 64:1270-1282
Tissue-like phantoms are important tools in studying light propagation and scattering in biological tissues and in the development, testing and calibration of novel optical diagnostic and therapeutic methods and instruments. This motivates the intere
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cd563b71971984a9abf4ec51998ce0de
https://doi.org/10.1080/09500340.2017.1285063
https://doi.org/10.1080/09500340.2017.1285063
Autor:
L. Slavov, Georgi Kolarov, R. Angelova, Dimitar Stoyanov, Ivan Grigorov, Ivan Nedkov, Chavdar Ghelev, Ljuan L. Gurdev
Publikováno v:
20th International Conference and School on Quantum Electronics: Laser Physics and Applications.
In this work some features are revealed, simultaneously by LIDAR and contact facilities, of the aerosol pollutions near high-traffic sites in Sofia City. Such features of interest are the extinction coefficient of the aerosol ensembles and their mass
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f7c76b53b8df6b28a4d79f81ba7f28d
https://doi.org/10.1117/12.2517934
https://doi.org/10.1117/12.2517934
Autor:
Latchezar Avramov, Eleonora N. Toncheva, Orlin I. Vankov, Ljuan L. Gurdev, Dimitar Stoyanov, Tanja N. Dreischuh
Publikováno v:
AIP Conference Proceedings.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e8cf895bbcbc6da9ab5785665aea87d
https://doi.org/10.1063/1.5091156
https://doi.org/10.1063/1.5091156
Autor:
Chavdar Ghelev, Ljuan L. Gurdev, Georgi Kolarov, Dimitar Stoyanov, R. Angelova, L. Slavov, Ivan Nedkov, Ivan Grigorov
Publikováno v:
AIP Conference Proceedings.
In this study, a LIDAR was used to outline characteristic zones in Sofia City of increased concentration of aerosol pollutants and to determine the related aerosol extinction coefficient. In-situ probing was conducted as well of the corresponding aer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::430d319be12225a7b75daae48de650c9
https://doi.org/10.1063/1.5091299
https://doi.org/10.1063/1.5091299
Autor:
G. Kolarov, Dimitar V. Stoyanov, Atanaska D. Deleva, Liliya A. Vulkova, Tanja N. Dreischuh, Ljuan L. Gurdev, Ivan Grigorov, Zahary Y. Peshev
Publikováno v:
Journal of Physics: Conference Series. 1859:012028
Using lidar and contact facilities, the relation is investigated experimentally between the extinction coefficient and the mass concentration of near-ground aerosol pollution over some districts in Sofia City. The extinction coefficient profiles of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7653675346e21fb7d7511527c18da3c0
https://doi.org/10.1088/1742-6596/1859/1/012028
https://doi.org/10.1088/1742-6596/1859/1/012028
Autor:
Ljuan L. Gurdev, Tanja N. Dreischuh, Lachezar A. Avramov, Eleonora N. Toncheva, Dimitar V. Stoyanov, Orlin I. Vankov
Publikováno v:
SPIE Proceedings.
Experimental measurements and theoretical description have been performed of the spatial intensity distribution of the backward radiative response of tissue-like Intralipid-20% dilutions in distilled water irradiated by a collimated near-infrared cw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4df9d032739dc5fb868c429f9e06b772
https://doi.org/10.1117/12.2261412
https://doi.org/10.1117/12.2261412
Autor:
Tanja N. Dreischuh, Dimitar Stoyanov, Ljuan L. Gurdev, Orlin I. Vankov, Lachezar A. Avramov, I. Bliznakova
Publikováno v:
Applied Physics B. 115:427-441
The possibility is studied to develop a straightforward analytical approach to the determination of the optical properties of liquid turbid media having forward-peaked scattering indicatrices. The approach is based on investigating the in-depth behav
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a95cc5791ba0c66252eb9faa6367bb1b
https://doi.org/10.1007/s00340-013-5624-x
https://doi.org/10.1007/s00340-013-5624-x
Publikováno v:
Acta Physica Polonica A. 118:540-549
The possibility has been investigated of determining, using graydar (Gamma RAY Detection And Ranging)approach, the in-depth partial-density profile of some substance absorbed in a dense medium. Analyticalalgorithms have been derived for retrieving t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0a5bc9f34d8277c2f4eea6964715dbe
https://doi.org/10.12693/aphyspola.118.540
https://doi.org/10.12693/aphyspola.118.540
Autor:
Tanja N. Dreischuh, Ljuan L. Gurdev
Publikováno v:
Journal of Modern Optics. 55:1441-1462
As a result of an analysis of the autocovariance of the complex heterodyne lidar signal, some general-enough inverse techniques (algorithms) are derived for recovering with high range resolution, below the sensing pulse length, of Doppler-velocity pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9179b125204dc47b7c33eab29c5deb37
https://doi.org/10.1080/09500340701668564
https://doi.org/10.1080/09500340701668564
Autor:
Ljuan L. Gurdev, C.N. Protochristov, Dimitar V. Stoyanov, Tanja N. Dreischuh, Orlin I. Vankov
Publikováno v:
IEEE Transactions on Nuclear Science. 54:262-275
An approach is proposed, and its potentialities are studied, for single-sided gamma-ray in-depth sensing and tomography of dense opaque media. The approach is based on lidar (LIgth Detection And Ranging) principle or, in the present case, graydar (Ga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ae0dfa262366da2186dde2b9ffa725a
https://doi.org/10.1109/tns.2006.887857
https://doi.org/10.1109/tns.2006.887857