Works by Kovalchuk, T. M.

Results: 25

ANALYSIS OF THE FINANCIAL CONDITION OF ENTERPRISES BY PHASES OF THEIR LIFE CYCLE.

Published in:

Scientific Bulletin of Polissia, 2018, v. 14, n. 2,Part2, p. 31, doi. 10.25140/2410-9576-2018-2-2(14)-31-38

By:

Kovalchuk, T. M.;
Verhun, A. I.

Publication type:

Article

Dielectric Properties of Lyotropic Magnetic Liquid Crystal.

Published in:

Acta Physica Polonica: A, 2015, v. 127, n. 2, p. 632, doi. 10.12693/APhysPolA.127.632

By:

KOPČANSKÝ, P.;
TOMČO, L.;
JADZYN, J.;
SWIERGIEL, J.;
MAJOROŠOVÁ, J.;
KUBOČÍKOVÁ, M.;
TIMKO, M.;
RAJŇÁK, M.;
ŠIPOŠOVÁ, K.;
GAŽOVÁ, Z.;
BEDNARIKOVÁ, Z.;
TOMAŠOVICOVÁ, N.;
HU, CHIN-KUN;
HAYRYAN, S.;
STUDENYAK, I.;
KOVALCHUK, T. M.;
KOVALCHUK, O. V.

Publication type:

Article

The strategic analysis of financial potential of the flour-and-cereals industry's enterprises.

Published in:

Ekonomika APK, 2017, n. 1, p. 45

By:

KOVALCHUK, T. M.;
KHUDYK, O. B.

Publication type:

Article

Effect of modification of nonwoven textiles with biochar and multi-walled carbon nanotubes on their dielectric properties.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2024, v. 27, n. 3, p. 308, doi. 10.15407/spqeo27.03.308

By:

Kovalchuk, O. V.;
Prochazkova, J.;
Kolanowska, A.;
Boncel, S.;
Mariano, J.;
Zolochevska, K.;
Kovalchuk, T. M.;
Kopčanský, P.;
Safarik, I.

Publication type:

Article

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.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2023, v. 26, n. 2, p. 173, doi. 10.15407/spqeo26.02.173

By:

Garbovskiy, Y. A.;
Kopčanský, P.;
Kovalchuk, O. V.;
Kovalchuk, T. M.;
Volokh, L. V.

Publication type:

Article

Dynamics of temperature dependence of the dielectric properties of a nanocomposite material based on linear polyethylene in the vicinity of the percolation transition.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2023, v. 26, n. 1, p. 41, doi. 10.15407/spqeo26.01.041

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.

Publication type:

Article

Dielectric properties of Shell transformer oil with impurities of carbon nanotubes and fullerene C60.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2021, v. 24, n. 4, p. 413, doi. 10.15407/spqeo24.04.413

By:

Kovalchuk, O. V.;
Studenyak, I. P.;
Kovalchuk, T. M.;
Ayryan, E. A.;
Paulovičová, K.;
Timko, M.;
Kopčanský, P.

Publication type:

Article

Influence of magnetic nanoparticles on dielectric properties of Shell oil transformer oil.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2021, v. 24, n. 2, p. 154, doi. 10.15407/spqeo24.02.154

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.

Publication type:

Article

Temperature dependence of dielectric properties of the liquid crystal 6CB with the embedded Ag7GeS5I nanoparticles.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2020, v. 23, n. 2, p. 129, doi. 10.15407/spqeo23.02.129

By:

Poberezhets, S. I.;
Kovalchuk, O. V.;
Studenyak, I. P.;
Kovalchuk, T. M.;
Poberezhets, I. I.;
Lacková, V.;
Timko, M.;
Kopčanský, P.

Publication type:

Article

Features of dielectric properties of medical thermal indicators based on dispersions of cholesteric liquid crystals in the polymer matrix.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2020, v. 23, n. 4, p. 372, doi. 10.15407/spqeo23.04.372

By:

Kovalchuk, O. V.;
Kotovskyi, V. Yo.;
Ovcharek, V. E.;
Oleinikova, I. V.;
Kovalchuk, T. M.

Publication type:

Article

Dielectric properties of nematic liquid crystal with impurities of supramolecular Ni-TMTAA-TCNQ complexes.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2020, v. 23, n. 2, p. 146, doi. 10.15407/spqeo23.02.146

By:

Vovk, V. E.;
Kovalchuk, O. V.;
Kopčanský, P.;
Kovalchuk, T. M.

Publication type:

Article

Dynamics of the conductance temperature dependence for composite based on linear polyethylene with impurity of soot and calcite.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2019, v. 22, n. 3, p. 285, doi. 10.15407/spqeo22.03.285

By:

Poberezhets, S. I.;
Kovalchuk, O. V.;
Savchenko, B. M.;
Ibrahimov, R. Sh.;
Kovalchuk, T. M.;
Poberezhets, I. I.

Publication type:

Article

Influence of nanoparticles of Cu7GeS5I superionic conductor on dielectric properties of planar-oriented nematic liquid crystal 6CB.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2018, v. 21, n. 4, p. 407, doi. 10.15407/spqeo21.04.407

By:

Kovalchuk, O. V.;
Luchynets, M. M.;
Studenyak, I. P.;
Timko, M.;
Kopčanský, P.;
Kovalchuk, T. M.

Publication type:

Article

Influence of Li-TCNQ impurities on dielectric properties of planar-oriented nematic liquid crystal.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2018, v. 21, n. 4, p. 397, doi. 10.15407/spqeo21.04.397

By:

Vovk, V. E.;
Kovalchuk, O. V.;
Kovalchuk, T. M.

Publication type:

Article

Nonmonotonic (in concentration) conductivity of aqueous solutions of fungal melanin.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2018, v. 21, n. 1, p. 95, doi. 10.15407/spqeo

By:

Kovalchuk, O. V.;
Kovalchuk, T. M.

Publication type:

Article

Saturation effect for dependence of the electrical conductivity of planar oriented nematic liquid crystal 6CB on the concentration of Cu7PS6 nanoparticles.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2017, v. 20, n. 4, p. 437, doi. 10.15407/spqeo20.04.437

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.

Publication type:

Article

The non-linear dependence of 6CHBT liquid crystal conductivity on the concentration of gold nanoparticles.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2016, v. 19, n. 4, p. 399, doi. 10.15407/spqeo19.04.399

By:

Kovalchuk, O. V.;
Kopčansky, P.;
Timko, M.;
Studenyak, I. P.;
Kovalchuk, T. M.

Publication type:

Article

Multiferroic based on nematic liquid crystal and nanoparticles.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2016, v. 19, n. 3, p. 285, doi. 10.15407/spqeo19.03.285

By:

Kovalchuk, O. V.;
Kovalchuk, T. M.;
Kucheriavchenkova, N. M.;
Sydorchuk, V. V.;
Khalameida, S. V.

Publication type:

Article

Peculiarities of near-electrode relaxation processes in the polyethylene melt filled with graphite and carbon black.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2016, v. 19, n. 3, p. 290, doi. 10.15407/spqeo19.03.290

By:

Kuryptya, Ya. A.;
Savchenko, B. M.;
Kovalchuk, O. V.;
Kovalchuk, T. M.;
Shostak, T. S.

Publication type:

Article

Influence of superionic nanoparticles Cu6PS5I on dielectric properties of nematic liquid crystal 6CHBT.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2015, v. 18, n. 2, p. 205, doi. 10.15407/spqeo18.02.205

By:

Studenyak, I. P.;
Demko, P. Yu.;
Bendak, A. V.;
Kovalchuk, O. V.;
Kovalchuk, T. M.;
Lisý, V.;
Kopčanský, P.;
Timko, M.;
Tomašovičová, N.;
Zavisova, V.;
Gdovinova, V.;
Miskuf, J.;
Oleinikova, I. V.;
Lad, A. I.;
Kucheriavchenkova, N. M.

Publication type:

Article

Peculiarities of nonadditive changes in conductivity of nano-PDLC under influence of magnetite and single-wall carbon nanotubes.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2014, v. 17, n. 4, p. 384

By:

Kopčanský, P.;
Timko, M.;
Mitrova, Z.;
Tomašovičová, N.;
Tomčo, L.;
Kovalchuk, O. V.;
Kovalchuk, T. M.;
Oleinikova, I. V.;
Lad, A. I.;
Studenyak, I. P.

Publication type:

Article

Nonadditive changes in conductivity of micro PDLC under the influence of carbon nanotubes and magnetic nanoparticles.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2013, v. 16, n. 4, p. 374

By:

Kopčansky, P.;
Timko, M.;
Mitrova, Z.;
Zavisova, V.;
Koneracka, M.;
Tomašovičova, N.;
Tomčo, L.;
Kovalchuk, O. V.;
Bykov, V. M.;
Kovalchuk, T. M.

Publication type:

Article

Effect of magnetic nanoparticles with various geometrical shapes on morphology and dielectric properties of nanodispersions of nematic liquid crystal in polymer matrix.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2013, v. 16, n. 3, p. 253

By:

Kopčansky, P.;
Timko, M.;
Mitrova, Z.;
Zavisova, V.;
Koneracka, M.;
Tomašovičova, N.;
Tomčo, L.;
Kovalchuk, O. V.;
Bykov, V. M.;
Kovalchuk, T. M.;
Lad, A. I.

Publication type:

Article

Dielectric and electro-optical properties of solutions of chemically modified fullerene C60 in nematic liquid crystal.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2011, v. 14, n. 2, p. 256

By:

Vovk, V. E.;
Kovalchuk, O. V.;
Gorishnyj, M. P.;
Kovalchuk, T. M.

Publication type:

Article

Morphology and dielectric properties of polymer dispersed liquid crystal with magnetic nanoparticles.

Published in:

Semiconductor Physics, Quantum Electronics & Optoelectronics, 2010, v. 13, n. 4, p. 343, doi. 10.15407/spqeo13.04.343

By:

Kopčanský, P.;
Timko, M.;
Mitrova, Z.;
Zavisova, V.;
Koneracká, M.;
Tomašovičová, N.;
Tomčo, L.;
Gornitska, O. P.;
Kovalchuk, O. V.;
Bykov, V. M.;
Kovalchuk, T. M.;
Studenyak, I. P.

Publication type:

Article

Works by Kovalchuk, T. M.

ANALYSIS OF THE FINANCIAL CONDITION OF ENTERPRISES BY PHASES OF THEIR LIFE CYCLE.

Dielectric Properties of Lyotropic Magnetic Liquid Crystal.

The strategic analysis of financial potential of the flour-and-cereals industry's enterprises.

Effect of modification of nonwoven textiles with biochar and multi-walled carbon nanotubes on their dielectric properties.

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.

Dynamics of temperature dependence of the dielectric properties of a nanocomposite material based on linear polyethylene in the vicinity of the percolation transition.

Dielectric properties of Shell transformer oil with impurities of carbon nanotubes and fullerene C<sub>60</sub>.

Influence of magnetic nanoparticles on dielectric properties of Shell oil transformer oil.

Temperature dependence of dielectric properties of the liquid crystal 6CB with the embedded Ag<sub>7</sub>GeS<sub>5</sub>I nanoparticles.

Features of dielectric properties of medical thermal indicators based on dispersions of cholesteric liquid crystals in the polymer matrix.

Dielectric properties of nematic liquid crystal with impurities of supramolecular Ni-TMTAA-TCNQ complexes.

Dynamics of the conductance temperature dependence for composite based on linear polyethylene with impurity of soot and calcite.

Influence of nanoparticles of Cu<sub>7</sub>GeS<sub>5</sub>I superionic conductor on dielectric properties of planar-oriented nematic liquid crystal 6CB.

Influence of Li-TCNQ impurities on dielectric properties of planar-oriented nematic liquid crystal.

Nonmonotonic (in concentration) conductivity of aqueous solutions of fungal melanin.

Saturation effect for dependence of the electrical conductivity of planar oriented nematic liquid crystal 6CB on the concentration of Cu<sub>7</sub>PS<sub>6</sub> nanoparticles.

The non-linear dependence of 6CHBT liquid crystal conductivity on the concentration of gold nanoparticles.

Multiferroic based on nematic liquid crystal and nanoparticles.

Peculiarities of near-electrode relaxation processes in the polyethylene melt filled with graphite and carbon black.

Influence of superionic nanoparticles Cu<sub>6</sub>PS<sub>5</sub>I on dielectric properties of nematic liquid crystal 6CHBT.

Peculiarities of nonadditive changes in conductivity of nano-PDLC under influence of magnetite and single-wall carbon nanotubes.

Nonadditive changes in conductivity of micro PDLC under the influence of carbon nanotubes and magnetic nanoparticles.

Effect of magnetic nanoparticles with various geometrical shapes on morphology and dielectric properties of nanodispersions of nematic liquid crystal in polymer matrix.

Dielectric and electro-optical properties of solutions of chemically modified fullerene C60 in nematic liquid crystal.

Morphology and dielectric properties of polymer dispersed liquid crystal with magnetic nanoparticles.