Search Results - "Kovalchuk, O.V."

The factors of competitiveness management of manufacturing enterprise personnel in conditions of uncertainty by Kovtunenko, K.V., Kovtunenko, Yu.V., Fomina, N.M., Kovalchuk, O.V., Kovtunenko, D.Yu

“…Personnel competitiveness has always been one of the main advantages of any production enterprise. Therefore, competitiveness management of production…”
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Influence of nanoparticles of Сu 7 GeS 5 I superionic conductor on dielectric properties of planar-oriented nematic liquid crystal 6СВ by Kovalchuk, O.V.

“…The influence of Сu 7 GeS 5 I nanoparticles on the dielectric properties of planar- oriented liquid crystal 6CB has been investigated within the frequency…”
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Nonmonotonic (in concentration) conductivity of aqueous solutions of fungal melanin by Kovalchuk, O.V.

“…The conductivity of aqueous (distilled and natural water) solutions of fungal melanin (purified and non-purified) has been studied. It has been shown that, in…”
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Dielectric properties of nematic liquid crystal with impurities of supramolecular Ni-TMTAA-TCNQ complexes by Vovk, V.E., Kovalchuk, O.V., Kopčanský, P., Kovalchuk, T.M.

“…Within the temperature range 288–343 K and frequencies 10–1–106 Hz, the dielectric properties of planar and homeotropic oriented nematic liquid crystal 6CHBT…”
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Temperature dependence of dielectric properties of the liquid crystal 6CB with the embedded Ag7GeS5I nanoparticles by Poberezhets, S.I., Kovalchuk, O.V., Studenyak, I.P., Kovalchuk, T.M., Poberezhets, I.I., Lacková, V., Timko, M., Kopčanský, P.

“…Within the frequency range 10–1–105 Hz under the temperatures 293–295 K, the dielectric properties of a planar-oriented nematic liquid crystal 6CB with the…”
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Multiferroic based on nematic liquid crystal and nanoparticles by Kovalchuk, O.V.

“…Multiferroics stable in morphological parameters has been created by introducing ferromagnetic (Fe2O3) and ferroelectric (LiNbO3) nanoparticles with the…”
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Saturation effect for dependence of the electrical conductivity of planar oriented nematic liquid crystal 6CB on the concentration of Cu7PS6 nanoparticles by Kovalchuk, O.V., Studenyak, I.P., Izai, V.Yu, Rybak, S.O., Pogodin, A.I., Kopčanský, P., Timko, M., Gdovinova, V., Mariano, J., Kovalchuk, T.M.

“…The influence of Cu7PS6 nanoparticles with the average size 117 nm on the dielectric properties of planar oriented nematic liquid crystal 6CB has been…”
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The non-linear dependence of 6СНВТ liquid crystal conductivity on the concentration of gold nanoparticles by Kovalchuk, O.V.

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Dielectric and electrical properties of nematic liquid crystals 6CB doped with iron oxide nanoparticles. The combined effect of nanodopant concentration and cell thickness by Kovalchuk, O.V., Kovalchuk, T.M., Tomašovičová, N., Timko, M., Zakutanska, K., Miakota, D., Kopčanský, P., Shevchuk, O.F., Garbovskiy, Y.

“…[Display omitted] •Dielectric and electrical properties of nematic liquid crystals 6CB doped with iron oxide nanoparticles are reported.•The combined effect of…”
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Effect of modification of nonwoven textiles with biochar and multi-walled carbon nanotubes on their dielectric properties by Kovalchuk, O.V., Prochazkova, J., Kolanowska, A., Boncel, S., Mariano, J., Zolochevska, K., Kovalchuk, T.M., Kopčanský, P., Safarik, I.

“…Dielectric properties of native nonwoven textile as well as textile with bound biochar and multi-walled carbon nanotubes in the frequency range of 10 to 5·105…”
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Dielectric properties of Shell oil transformer oil with impurities of carbon nanotubes and fullerene C60 by Kovalchuk, O.V., Studenyak, I.P., Kovalchuk, T.M., Ayryan, E.A., Paulovičová, K., Timko, M., Kopčanský, P.

“…At the temperature 293 K, the influence of two types of nanoimpurities (carbon multiwall nanotubes and C60 fullerene) both separately and together on the…”
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Peculiarities of the effect of different types of SOR nanoimpurities on the value of ionic component of the electrical conductivity of the homeotropically aligned nematic liquid crystal 6 СВ by Garbovskiy, Y.A., Kopčanský, P., Kovalchuk, O.V., Kovalchuk, T.M., Volokh, L.V.

“…In this paper, the effects of SOR5, SOR10, and SOR15 nanoimpurities on the value of the ionic conductivity of the homeotropically aligned nematic liquid…”
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The studying of motivation of student youth to healthy life-style by Lazurenko, N V, Podporinova, N N, Polenova, M E, Kovalchuk, O V, Nikulina, T V

“…The article considers motivation of students to maintain healthy life-style. The empirical study was carried out on the basis of the Institute of Social…”
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Clinical efficacy of losartan and ramipril in male patients with hypertension depending on age, uricemia level, and hypertension type by V.P. Ivanov, T.M. Kostrubska, O.V. Kovalchuk

“…Aim. Aging of population, treatment of cardiovascular diseases in the context of higher longevity, and improving the quality of life are considered among…”
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Dielectric properties of 6СНВТ liquid crystals with carbon nanotubes modified by COOH group and nanocomposites on their base by Kopčanský, P., Timko, M., Studenyak, I.P., Kovalchuk, O.V., Oleinikova, I.V., Kovalchuk, T.M.

“…Influence of single-walled carbon nanotubes modified by COOH group on the dielectric properties of homogeneous 6СНВТ liquid crystal (LC) and dispersed 6СНВТ LC…”
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Influence of Li-TCNQ impurities on dielectric properties of planar-oriented nematic liquid crystal by Vovk, V.E.

“…The dielectric properties of planar-oriented nematic liquid crystal E25M with Li-TCNQ impurities have been investigated within the frequency range 10 –1 ...10…”
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Dynamics of temperature dependence of the dielectric properties of a nanocomposite material based on linear polyethylene in the vicinity of the percolation transition by Kovalchuk, O.V., Kovalchuk, T.M., Garbovskiy, Y.A., Svistilnik, R.F., Pushkarov, D.V., Volokh, L.V., Lagoda, O.A., Oleinikova, I.V.

“…Within the frequency range of 30 to 105 Hz and temperatures of 18 to 80 °C, the dielectric properties of linear low-density polyethylene with impurities of…”
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Influence of magnetic nanoparticles on dielectric properties of Shell oil transformer oil by Kovalchuk, O.V., Nesterenko, O.B., Kotovskyi, V.Yo, Studenyak, I.P., Kovalchuk, T.M., Paulovičová, K., Timko, M., Kopčanský, P., Parekh, K., Upadhyay, R.V.

“…The influence of two types of nano-impurities MF1 and MF2 on the dielectric properties of Shell oil transformer oil at the temperature 293 K has been studied…”
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Features of dielectric properties of medical thermal indicators based on dispersions of cholesteric liquid crystals in the polymer matrix by Kovalchuk, O.V., Kotovskyi, V.Yo, Ovcharek, V.E., Oleinikova, I.V., Kovalchuk, T.M.

“…Within the frequency range 10…106 Hz, the frequency dependences of the real (ε') and imaginary (ε") components of the complex dielectric permittivity of…”
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Sensitivity of 6CHBT Liquid Crystal Doped with Ferroelectric or Magnetic Particles to Electric and Magnetic Fields by Majorošová, J., Tomašovičová, N., Timko, M., Koneracká, M., Studenyak, I.P., Kovalchuk, O.V., Kovalchuk, S.O., Jadżyn, J., Kopčanský, P.

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