Výsledky vyhledávání - "K. I. Hnatiuk"

Investigation of the structure and mechanisms of thermal motion in nanostructured undecylenic acid

Autor: Alexander N. Alekseev, M. M. Lazarenko, K. I. Hnatiuk, Sergei Alekseev, Yu. E. Grabovsky, K. S. Yablochkova, M. V. Lazarenko

Publikováno v: Molecular Crystals and Liquid Crystals. 701:16-27

We have compared the structure, phase transitions and the thermal motion mechanisms of the undecylenic acid in bulk and inside a porous matrix using powder X-ray diffraction, calorimetry and IR-spe...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c296b6d9d942787fdc73fb946dfc52bc
https://doi.org/10.1080/15421406.2020.1732559

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Melting of 1-octadecene inside the pores of open-morphology silica gel: thermodynamic model and experimental studies

Autor: K. I. Hnatiuk, Marin Simeonov, V. V. Sirko, Alexander N. Alekseev, M. M. Lazarenko, Neli Koseva, Roman Dinzhos, Sergei Alekseev, Yu. F. Zabashta

Publikováno v: Journal of Thermal Analysis and Calorimetry. 141:1243-1250

Melting of crystalline compounds inside the nanopores of open-morphology porous systems was studied on a model system, consisted of 1-octadecene and silica gels with different pore sizes, by means of thermogravimetry, differential scanning calorimetr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5a06b9e9cbf9b072879e46371aa70c9d
https://doi.org/10.1007/s10973-019-09133-4

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Deformation Features in the Cell When the Coronavirus Enters It

Autor: Yu. F. Zabashta, K. I. Hnatiuk, Leonid A. Bulavin

Publikováno v: Ukrainian Journal of Physics; Vol. 66 No. 9 (2021); 785
Український фізичний журнал; Том 66 № 9 (2021); 785

A mathematical model has been proposed to describe the deformation behavior of a cell, when a coronavirus enters it. The model is continuum-based, and the theory of elasticity is used in calculations. It was found that the deformation process accompa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3dd39260265ce47228e43dd1cb739092
https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2021015

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Low-Temperature Dielectric Relaxation in the System Silica Gel – Undecylenic Acid

Autor: Sergei Alekseev, M. V. Lazarenko, Filip Ublekov, D. Andrusenko, K. I. Hnatiuk, Roman Dinzhos, K. S. Yablochkova, M. M. Lazarenko, Alexander N. Alekseev

Publikováno v: 2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP).

The paper discusses the influence of silica gel pores’ size on the structure and the dielectric properties of the nanocrystals of undecylenic acid with the view of determining molecular mechanisms of the possible pharmacological activity of similar

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5072e7e2f0208922195fedca5a9fb99f
https://doi.org/10.1109/nap51477.2020.9309579

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The impact of the silica gel structure and surface chemistry on the melting of aliphatic nanocrystals: Thermodynamic model and experiment

Autor: Alexander N. Alekseev, Sergei Alekseev, Neli Koseva, Evgeny G. Rudnikov, Filip Ublekov, K. I. Hnatiuk, Roman Dinzhos, M. M. Lazarenko, A. G. Kuzmich, K. S. Yablochkova, Maksym S. Nizameev

Publikováno v: Journal of Physics and Chemistry of Solids. 161:110426

Phase transitions in nano-sized systems are of fundamental importance in a variety of fields, including sustainable energy and the pharmaceutical industries. Here we report the thermal properties of undecylenic acid nanocrystals in silica gel pores o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::51f2b1f7794c429fcaabe0baad94190e
https://doi.org/10.1016/j.jpcs.2021.110426

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Nanocrystallite-liquid phase transition in porous matrices with chemically functionalized surfaces

Autor: Roman Dinzhos, Valeriy G Kolesnichenko, Michael V. Ushcats, Leonid A. Bulavin, Alexander N. Alekseev, M. M. Lazarenko, Sergei Alekseev, Yurii E. Grabovskii, Marin Simeonov, Yuriy Zabashta, K. I. Hnatiuk

Publikováno v: Physical chemistry chemical physics : PCCP. 21(44)

Nanocrystallite-liquid phase transitions are studied for 1-octadecene confined in the pores of chemically functionalized silica gels. These silica gels possess similar fractal geometries of the pore system but differ in chemical termination of the su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18efbbfc8125d69c3ae7f1b2c2846d2a
https://pubmed.ncbi.nlm.nih.gov/31674628

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Two-Dimensional Ordered Crystal Structure Formed by Chain Molecules in the Pores of Solid Matrix

Autor: Yuriy Zabashta, Sergei Alekseev, Alexander N. Alekseev, M. M. Lazarenko, Yurii E. Grabovskii, Roman Dinzhos, K. I. Hnatiuk, Leonid A. Bulavin

Publikováno v: Springer Proceedings in Physics ISBN: 9783030177584

X-ray diffraction patterns of silicon and silica gel with the pores filled by 1-octadecene were analyzed. It was found that 1-octadecene in the pores of silica gel possesses a two-dimensional crystalline structure. The formation mechanism for such a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9b805efbe51e8dec0d8546fe800aecc7
https://doi.org/10.1007/978-3-030-17759-1_26

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Topological solitons in chain molecular crystals with stoichiometric obstacles and hydrogen bonds

Autor: K. S. Yablochkova, O.F. Demidiuk, M. V. Lazarenko, Sergei Alekseev, Alexander N. Alekseev, K. I. Hnatiuk, Nataliia Atamas, M. M. Lazarenko

Publikováno v: Journal of Physics and Chemistry of Solids. 144:109514

The present paper examines molecular motion mechanisms in lamellar molecular crystals of undecylenic acid. Thermophysical, dielectric, and infrared spectroscopy methods were used to demonstrate the presence of a relaxation process in crystals of unde

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b02da2afb24ea870625ef4e60f364aec
https://doi.org/10.1016/j.jpcs.2020.109514

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