O. G. Korotkova

Learn More
Analytic expressions for the mutual coherence function (MCF) and the scintillation index of a partially coherent lowest order Gaussian beam wave propagating through the atmosphere (based on Kolmogorov spectrum model) are developed for the pupil plane of a receiving system. Partial coherence of the beam is modeled as a thin (complex) phase screen with(More)
A hot-air turbulence emulator is employed for generating controlled optical clear air turbulence in the weak fluctuation regime in laboratory conditions. The analysis of the first and second-order statistical moments of the fluctuating intensity of a propagating infra-red (IR) laser beam through the turbulence emulator is made and the results are compared(More)
The effect of polysaccharide monooxygenase (endoglucanase IV) from the fungus Trichoderma reesei on the hydrolysis of polysaccharide substrates by cellulases secreted by the fungus Penicillium verruculosum has been investigated. Supplementation of the enzyme complex from P. verruculosum by endoglucanase IV from T. reesei has been shown to elevate the(More)
We establish a sufficient condition under which the alternation series of cross-spectral densities (CSD) constitutes a valid CSD. Using such a condition, we introduce a novel class of multi-sinc Schell-model sources with circular and Cartesian symmetries. It is demonstrated that far fields produced by the new sources carry interesting characteristics, being(More)
Recombinant strains of Penicillium canescens producing homologous pectin lyase A and heterologous endo-1,5-α-arabinase A and endo-1,4–α-polygalacturonase, as well as enzymes of the host strain (α-L-arabinofuranosidases, xylanases, and others), were obtained by genetic engineering. The enzyme preparations (EPs) obtained from the cultural medium of(More)
Measurements of partially spatially coherent infra-red laser beam intensity fluctuations propagating through a hot-air turbulence emulator are compared with visible laser beam intensity fluctuations in the maritime and IR laser beam intensity fluctuations in the terrestrial environment at the United States Naval Academy. The emulator used in the laboratory(More)
  • 1