Search

Your search keyword '"Korotkova, Olga"' showing total 97 results
Start Over Author "Korotkova, Olga" Publication Year Range Last 3 years
97 results on '"Korotkova, Olga"'

5. Partially coherent cylindrical vector sources

Author

Santarsiero, Massimo, González De Sande, Vicente, Korotkova, Olga, Martínez Herrero, María Rosario, Piquero Sanz, Gemma María, Gori, Franco, Santarsiero, Massimo, González De Sande, Vicente, Korotkova, Olga, Martínez Herrero, María Rosario, Piquero Sanz, Gemma María, and Gori, Franco

Abstract

A new class of stationary electromagnetic sources radiating outward from the surface of an infinitely long cylinder is introduced via vectorial coherent mode representation. First, two particular types of such sources are discussed: with either an electric or magnetic field aligned with the cylinder's axis. The former case represents a scalar scenario, while the latter leads to the two-component electric field. The combination of these two types of sources is then considered by forming the three-component electric field vector. An extension to the stationary case is then made in which the electric field correlations are shown to be described by the intrinsically 3 x 3 cross-spectral density matrix. Several known theories of electromagnetic coherence and polarization are then invoked for the analysis of radiation, on and off the source surface. The results for the spectral density, degree of coherence, and degree of polarization are then discussed in detail. The effects of mutual correlation of modes are also outlined. The new family of sources is of importance for any application involving cylindrical sources with controllable radiation., Ministerio de Economía y Competitividad (España), University of Miami, Depto. de Óptica, Fac. de Ciencias Físicas, TRUE, pub

Published
2024

11. Singular value representation of the coherence Poincaré sphere

Author

Laatikainen Jyrki, Friberg Ari T., Korotkova Olga, and Setälä Tero

Subjects
electromagnetic beams, optical coherence, polarization, Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467
Abstract

The so-called coherence Poincaré sphere was recently introduced for geometrical visualization of the state of two-point spatial coherence of a random electromagnetic beam. The formalism and its interpretation strongly utilized a specific decomposition of the Gram matrix of the cross-spectral density (CSD) matrix. In this work, we show that the interpretation of the coherence Poincaré sphere is obtained exclusively and straightforwardly via the singular value decomposition of the CSD matrix.

Published
2022
Full Text
View/download PDF

16. Cellulases from Mycelial fungi Penicillium verruculosum as a Real Alternative to Trichoderma Enzymes in Industrial Hydrolysis of Cellulosic Biomass

Author

G., Korotkova, Olga, M., Rozhkova, Alexandra, A., Rubtsova, Ekaterina, and P., Sinitsyn, Arkady

Abstract

The possibility of using the recipient strain Penicillium verruculosum B1-537 (ΔniaD) as a producer of laboratory and industrial enzymes was considered. The advantage of this strain is its ability to secrete a basic cellulase complex consisting of cellobiohydrolases, endoglucanases, and β-glucosidase, which exceeds in its hydrolytic ability the enzyme complex of Hypocrea (Trichoderma) strains. Using the expression system, the basic complex of cellulases of the recipient strain Piptochaetium verruculosum B1-537 (ΔniaD) was supplemented with new (booster) enzymes that are necessary to increase its hydrolytic activity. Enzyme preparations adapted to the processing of various types of renewable plant biomass were obtained.

Published
2023

Catalog

Books, media, physical & digital resources
See catalog results