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V. N. Vasilets L. A. Demidenko E. A. Krasnov E. V. Ermilova N. N. Red'kina 《Chemistry of Natural Compounds》1988,24(6):748-748
Tomsk Medical Institute. Translated from Khimiya Prirodynkh Soedinenii, No. 6, pp. 875–876, November–December, 1988. 相似文献
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Yu. M. Shul’ga V. N. Vasilets S. A. Baskakov M. A. Smirnov V. P. Tarasov V. I. Volkov G. A. Kichigina P. P. Kushch D. P. Kiryukhin 《High Energy Chemistry》2013,47(6):291-294
By solid-state magic angle-spinning nuclear magnetic resonance spectroscopy (NMR), differential scanning calorimetry (DSC), and IR spectroscopy, polytetrafluoroethylene (PTFE) samples obtained by low-temperature (T = ?196°C) postradiation polymerization of tetrafluoroethylene (C2F4) and C2F4 mixtures with a 3D graphene material formed by the microwave exfoliation of graphite oxide films (MEGO) have been investigated. It has been shown that the melting point of PTFE in the PTFE-MEGO composite is 332.5°C, which is 8.8°C above the melting point of pure PTFE obtained under the same conditions. According to the measured values of specific enthalpy of melting ΔH m (51.5 and 45.4 J/g), the degrees crystallinity (x c) of 0.63 and 0.55 have been calculated for the pure polymer and the composite, respectively. It has been also found that none of the PTFE-containing samples examined has terminal CF3 groups typical of PTFE prepared by conventional suspension polymerization. 相似文献
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Kiryukhin D. P. Kichigina G. A. Kushch P. P. Vasilets V. N. Kabachkov E. N. Shulga Yu. M. 《High Energy Chemistry》2022,56(3):184-189
High Energy Chemistry - The influence of monomer concentration on the properties of radiation-synthesized tetrafluoroethylene telomers in perfluoro-1,3-dimethylcyclohexane has been studied by... 相似文献
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Different aspects of plasma medicine, the new branch interdisciplinary between plasma chemistry and medicine, are considered. It was shown that complex biological processes in living tissues and bodies can be controlled, stimulated, catalyzed, and diagnosed with the use of low-temperature, atmospheric-pressure air plasma. It was found that discharge plasma can produce the desired therapeutic effect in wound sterilization and healing, as well as in treatment of some skin diseases. The action of plasma is harmless for the human body under definite conditions and exerts a targeted, nondestructive therapeutic effect. 相似文献
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Gregory Fridman Alexey Shereshevsky Monika M. Jost Ari D. Brooks Alexander Fridman Alexander Gutsol Victor Vasilets Gary Friedman 《Plasma Chemistry and Plasma Processing》2007,27(2):163-176
Initiation of apoptosis, or programmed cell death, is an important issue in cancer treatment as cancer cells frequently have
acquired the ability to block apoptosis and thus are more resistant to chemotherapeutic drugs. Targeted and perhaps selective
destruction of cancerous tissue is desirable for many reasons, ranging from the enhancement of or aid to current medical methods
to problems currently lacking a solution, i.e., lung cancer. Demonstrated in this publication is the inactivation (killing)
of human Melanoma skin cancer cell lines, in vitro, by Floating Electrode Dielectric Barrier Discharge (FE-DBD) plasma. Not
only are these cells shown to be killed immediately by high doses of plasma treatment, but low doses are shown to promote
apoptotic behavior as detected by TUNEL staining and subsequent flow cytometry. It is shown that plasma acts on the cells directly and not by
“poisoning” the solution surrounding the cells, even through a layer of such solution. Potential mechanisms of interaction
of plasma with cells are discussed and further steps are proposed to develop an understanding of such systems. 相似文献
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Yu. M. Shul’ga B. P. Tarasov V. M. Fokin N. Yu. Shul’ga V. N. Vasilets 《Physics of the Solid State》1999,41(8):1391-1397
X-ray diffraction patterns, infrared and x-ray photoelectron spectra, and electron energy-loss spectra are obtained for fullerene deuteride C60D24 prepared by treating solid C60 with D2 gas. It is established that the deuteride is a polycrystalline powder with an fcc lattice (a 0=14.55 Å). The product of thermal decomposition of the deuteride consists mainly of fullerene molecules separated by a distance much greater than in the initial fullerite. 相似文献
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Victor N. Vasilets Anatolii V. Kovalchuk Tat'yana I. Yuranova Ardalion N. Ponomarev Raisa V. Talroze Nicolai A. Plate 《先进技术聚合物》2000,11(7):330-333
The orientation behavior of a nematic side‐chain polymer grafted on polytetrafluoroethylene (PTFE) is studied. The sandwich‐like composite was prepared by the graft post‐polymerization of 4‐cyan‐4′‐(biphenyloxy)butyl acrylate on a PTFE film pretreated by vacuum ultraviolet irradiation (VUV). The oriented liquid crystal layer was prepared by mechanical stretching of the composite film. Orientation degree was measured by means of FT‐IR spectroscopy. The orientation function increases with the increasing strain and attains the upper limit value at the strain Δl/l > 1.0. The temperature dependence of the orientation degree is completely reversible under cooling and heating. Copyright © 2000 John Wiley & Sons, Ltd. 相似文献
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The various plasmochemical technique for the surface functionalization and regulation of the biological characteristics of fluorocarbon polymers aimed at the enhance their blood compatibility are described. The plasmochemical treatment in oxygen and nitrogen containing gases has been used to increase of surface energy and hydrophoby of fluorocarbon polymers. Modification of the surface morphology and chemical structure to improve thromboresistive properties of polymers by plasma etching and deposition of biocompatible materials was demonstrated and discussed. Plasma-assisted immobilization of proteins in combination with other plasma modification methods provides a promising technique for engineering of a new generation of hemocompatible materials. 相似文献