Zobrazeno 1 - 10
of 12
pro vyhledávání: '"A. M. Kostruba"'
Publikováno v:
Biosystems Diversity, Vol 31, Iss 1, Pp 59-70 (2023)
The geographical distribution, ecological and coenotic features of the place of growth and age structure of Ornithogalum boucheanum populations in Ukraine have been studied. In total, during the entire period of floristic research in Ukraine, 263 nat
Externí odkaz:
https://doaj.org/article/c7c4cbe389634cad85fc6aabf1b7dff6
Publikováno v:
Journal of Native and Alien Plant Studies. :183-188
The distribution of a potentially invasive species from the Cucurbitaceae family — Thladiantha dubia is considered in Ukraine. The current significant increase in the distribution of the species in many regions of Ukraine has been clarified. It was
Publikováno v:
Materials Science. 56:523-529
We study the wear resistance of the disks of furrow-openers of seeding machines. The surface nanocrystalline structure of the disks made of 65G steel is formed by the mechanical-pulse treatment under the conditions of dry abrasive friction. It is sho
Autor:
Roman Serkiz, V. Vasilyev, P.K. Khanna, Y. Kulyk, A. M. Kostruba, Halyna Klym, Ivan Karbovnyk, B. Sadoviy, A. V. Kukhta, B. Turko, Andriy Luchechko
Publikováno v:
Optical and Quantum Electronics. 53
The composite material based on ZnO microneedles and Alq3 thin film has been obtained. The photoluminescence study shows a tenfold enhancement in the band-edge UV emission (390 nm) of ZnO microneedles and 2 × enhancement in visible emission of the h
Photoluminescence polarization and refractive index anisotropy of porous silicon nanocrystals arrays
Autor:
Liubomyr S. Monastyrskii, I. B. Olenych, Andriy M. Kostruba, Andriy Luchechko, Yuriy Eliyashevskyy
Publikováno v:
Applied Nanoscience. 10:2519-2525
In this work, the simple way to form oriented arrays of silicon nanocrystals in a dielectric matrix was suggested. Porous silicon nanostructures obtained on the substrates with the [100] and [111] crystallographic orientations were separated from the
Autor:
A. M. Kostruba, V. B. Kapustianyk, Mykhailo Savchak, Mastooreh Seyedi, A. Vaskiv, B. Turko, Igor Luzinov, L. R. Toporovska
Publikováno v:
Optical and Quantum Electronics. 52
The nanocomposite film based on zinc oxide nanostructures and reduced graphene oxide bilayer (ZnO/rGO) was synthesized, characterized and tested for the photodegradation of model organic dye (methyl orange) in water. Specifically, the nanorods of zin
Publikováno v:
2019 XIth International Scientific and Practical Conference on Electronics and Information Technologies (ELIT).
In this work, the new greyscale image processing technique based on the fuzzy inference system is proposed for defining the optimal threshold of the binarization. The developed approach involves fuzzy two-class clustering with the help of c-means alg
Autor:
Orest G. Vlokh, A. M. Kostruba
Publikováno v:
SPIE Proceedings.
The new method for the determination of the high absorptive thin film parameters is proposed. This technique consist in the complex ellipsometry + photometry measurements. The comparison of the principal parameters of the proposed technique and the t
Autor:
Orest G. Vlokh, A. M. Kostruba
Publikováno v:
SPIE Proceedings.
Device is intended for the experimental obtaining of intensity distribution in the section of beam diffracted from pre-grooved surface. It simulates the work of laser read-out systems as at the reproduction as in the static state. It is possible to e
Autor:
A. M. Kostruba, Orest G. Vlokh
Publikováno v:
SPIE Proceedings.
Essential peculiarities of the readout procedure of the optical disc with the dye active layer are determined by the coating process technique and by the active layer optical parameters. Such active layers have a mixed amplitude-phase microstructure.