Slavamir Anufrick
@grsu.by
Department of Theoretical Physics and Thermal Engineering / Faculty of Physics and Technology
Yanka Kupala State University of Grodno (YKSUG)
RESEARCH, TEACHING, or OTHER INTERESTS
Atomic and Molecular Physics, and Optics, Condensed Matter Physics, Statistical and Nonlinear Physics
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
S. S. Anufrik, V. V. Tarkovsky, and S. N. Anuchin
Springer Science and Business Media LLC
V. V. Tarkovskii, S. S. Anufrik, A. O. Romashkevich, and P. R. Makei
Allerton Press
S. S. Anufrick, A. P. Volodenkov, K. F. Znosko, and V. F. Losev
Pleiades Publishing Ltd
Р.И. Довнар, С.М. Смотрин, С.С. Ануфрик, С.Н. Анучин, И.С. Довнар, and Н.Н. Иоскевич
Professionals Publications
Введение. Все более возрастающая антибиотикорезистентность патогенных микроорганизмов является тревожным знаком современной хирургии. Наличие устойчивости к антибиотикам удлиняет сроки госпитализации пациентов, увеличивает заболеваемость и смертность, повышает затраты на здравоохранение. Так, в Республике Беларусь ежегодные потери вследствие наличия антибактериальной резистентности микроорганизмов составляют от 93,5 до 131,5 млн белорусских рублей.Цель. Изучение количественных характеристик антибактериального действия наночастиц меди и селена по отношению к клиническим полиантибиотикорезистентным штаммам грамположительных и грамотрицательных бактерий.Материалы и методы. Противомикробное действие наночастиц меди и селена исследовалось на двух штаммах грамположительных бактерий – Staphylococcus aureus и Staphylococcus haemolyticus, а также пяти штаммах грамотрицательных бактерий – Acinetobacter baumannii, Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis и Pseudomonas aeruginosa. Антибактериальные свойства данных наночастиц изучались с помощью метода серийных разведений в жидкой питательной среде. В качестве способа синтеза наночастиц меди и селена был использован метод лазерной абляции в жидкости.Результаты. Проведенные исследования продемонстрировали, что наночастицы меди и селена обладают выраженным противомикробным действием по отношению к клиническим патогенным штаммам как грамположительных, так и грамотрицательных микроорганизмов. Учитывая наличие полиантибиотикорезистентности у данных штаммов, применение наночастиц исследованных элементов является перспективным направлением в хирургии, особенно в случае гнойных процессов, вызванных полирезистентной, смешанной или трудно поддающейся лечению микрофлорой.Выводы. Наночастицы меди и селена являются уникальным классом веществ, проявляющих выраженную антибактериальную эффективность в отношении полиантибиотикорезистентной микрофлоры, что показывает возможность их широкого применения в различных областях хирургии в будущем. Introduction. Increasing antibiotic resistance of pathogenic microorganisms is an alarming sign of modern surgery. The presence of antibiotic resistance lengthens hospital stays, increases morbidity and mortality, and increases healthcare costs. Thus, in the Republic of Belarus, annual losses due to the presence of antibacterial resistance of microorganisms range from 93.5 to 131.5 million Belarusian rubles annually.Purpose. To study quantitative characteristics of antibacterial action of copper and selenium nanoparticles against clinical polyantibiotic-resistant strains of gram-positive and gram-negative bacteria.Materials and methods. The antimicrobial effect of copper and selenium nanoparticles was studied on two gram-positive strains: Staphylococcus aureus and Staphylococcus haemolyticus and five strains of gram-negative bacteria: Acinetobacter baumannii, Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, and Pseudomonas aeruginosa. The antibacterial properties of these nanoparticles were studied using the method of serial dilutions in a liquid nutrient medium. The laser ablation in liquid was used as a method of synthesizing copper and selenium nanoparticles.Results. The conducted studies have demonstrated that copper and selenium nanoparticles exhibit a pronounced antimicrobial effect against clinical pathogenic strains of both gram-positive and gram-negative microorganisms. Given the presence of polyantibiotic resistance in these strains, the use of nanoparticles of the studied elements is a promising direction in surgery, especially in case of purulent processes caused by multiresistant, mixed or difficult to treat microflora.Conclusions. Copper and selenium nanoparticles represent the unique class of substances exhibiting pronounced antibacterial efficacy against polyantibiotic-resistant microflora, which suggests the possibility of their wide application in various fields of surgery in the future.
V.V. Tarkovsky, S.S. Anufrik, and V.Yu. Kurstak
IOP Publishing
Abstract We examine the effect of the pump-induced loss in the gain medium of a Rhodamine 6G laser on the spectral dependence of the laser efficiency under microsecond coherent pumping. It is shown theoretically and experimentally that the pump-induced loss is mainly due to nonlinear refraction and thermo-optic inhomogeneities of the gain medium, which produce a negative thermal lens, whose defocusing effect reduces the laser efficiency. The induced absorption by excited-state singlet and triplet levels of dye molecules is shown to make no significant contribution to changes in laser efficiency. The pump-induced thermal loss at the peak absorption wavelength of Rhodamine 6G plays a more important role well above the threshold pump power density (γ ⩾ 5). We demonstrate that the maximum dye laser efficiency under microsecond coherent pumping can only be achieved at an optimal pump wavelength.
Hongda Li, Y. N. Panchenko, M. V. Andreev, A. V. Puchikin, S. A. Yampolskaya, V. F. Losev, and S. S. Anufrick
Springer Science and Business Media LLC
Slavomir Anufrick, Alexander Volodenkov, Kazimir Znosko, and Valery Losev
SPIE
XeCl electro-discharge laser modeling is discussed. The pump parameters of a LC-contour excitation system are studied in XeCl laser using a Ne:Xe :HCl mixture. A computation model is developed for finding the parameters of laser. The dependence of generation energy from parameters of excitation system and mixture was determined.
S. S. Anufrik, S. N. Anuchin, and V. V. Tarkovskii
Pleiades Publishing Ltd
Alexander Volodenkov, Kazimir Znosko, and Slavomir Anufrick
Begell House
Alexander Volodenkov, Kazimir Znosko, and Slavomir Anufrick
Begell House
S. S. Anufrik, A. P. Volodenkov, and K. F. Znosko
IEEE
The dependences of the depth of the crater in the tooth enamel and in the tartar, depending on the energy density (530 nm) were obtained. The dependence of the depth of the crater in tooth enamel and in tartar was investigated depending on the energy density (353 nm). Ablation thresholds for dental tissue wert found (353 and 530 nm). The dependence of the specific energy of evaporation of tooth enamel and tartar on the energy density is determined (353 and 530 nm).
S. S. Anufrik, A. P. Volodenkov, and K. F. Znosko
IEEE
A technique has been developed for modeling XeCl-excilamps of a barrier discharge (halogen donor HCl) which takes into account the parameters of the emitter and the excitation system. Simulation of a XeCl barrier discharge excilamp based on HCl: Xe: Ne mixtures with a total pressure of 0,5-1 atm, excited by an LC circuit, was performed. The dependence of the radiation pulse energy and efficiency on the composition of the mixture, the parameters of the emitter and the excitation system is determined. An efficiency reach ~ 37%.
N.T. Avlasevich, S.S. Anufrik, and A.M. Lialikov
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
1 ORCID: 0000-0002-1525-0526, avlasevichnt@tut.by 2 ORCID: 0000-0002-5761-4965, anufrick@grsu.by 3 ORCID: 0000-0003-2525-6611, amlialikov@grsu.by Abstract Of particular interest are objects characterized by a tunable periodic structure. The structure parameters of such objects change not only in space, but also in time. The study of behavior in space and visualization of defects in periodic structures is one of the main tasks of measuring control. The paper proposes a simple method of visualization of macrodefects of dynamic periodic structures based on the effect of the appearance of moire fringes. An easy-to-use visualization method involves registering a series of snapshots of a dynamic periodic structure followed by combining a selected pair of snapshots. The devices for recording a series of snapsohts and forming moiré paintings are described. A feature of the implementation of this method of visualization of macrodefects is the possibility of using incoherent light both when registering snapsohts and in the process of forming moire fringes. When creating a device for implementing the method, household LED lamps A60 with a matte bulb were used as light sources. A series of moire patterns was obtained, visualizing the spatial position of the macrodefect of the mask surface at various points in time of its mechanical deformation. A pattern of moire fringes, visualizing the position of a macrodefect of a periodic structure, was recorded by a digital camera and displayed on a personal computer monitor screen.
S. S. Anufrik, N. N. Kurian, K. F. Znosko, and M. V. Belkov
Springer Science and Business Media LLC
Alexander Volodenkov, Slavomir Anufrick, and Kazimir Znosko
Begell House
S. S. Anufrik, N. N. Kurian, I. I. Zhukova, K. F. Znosko, and M. V. Belkov
Springer Science and Business Media LLC
Vasili M. Katarkevich, Anatoli N. Rubinov, Terlan Sh. Efendiev, Slavamir S. Anufrik, and Modest F. Koldunov
The Optical Society
Realization of a compact, robust, highly stable, and efficient solid-state distributed feedback (DFB) dye laser based on pyrromethene 580-doped modified poly-(methyl methacrylate) embedded into nanoporous glass host is reported. A diode-pumped solid-state STA01SH-500 Nd:LSB microlaser (λ=532 nm; τ0.5∼0.5 ns; EP≤80 μJ; f≤500 Hz) is used as a pump source. When pumped well above threshold, a DFB laser emits a train of ultrashort pulses (τ≤1 ns; τ0.5<0.5 ns; Δλ0.5≤0.01 nm), while at excitation intensities not far from threshold, single transform-limited picosecond pulses (τ0.5≤40 ps; τ0.5Δν0.5∼0.3), tunable from 541 to 598 nm, are generated. The DFB lasing efficiency reaches ∼60% upon an energy stability of ∼1.4% and an overall service life of the active element of ∼9×107 laser shots. More than an order of magnitude increase in the temperature stability of a lasing wavelength as compared with ethanol solutions of laser dyes is practically demonstrated.
Alexander Volodenkov, Slavomir Anufrick, and Kazimir Znosko
Begell House
S.S. Anufrik, V.Yu. Kurstak, and V.V. Tarkovsky
IEEE
Dependence of efficiency of generation of the dye laser from a wave length of a pumping radiation of microsecond duration is explored. It is shown, that the given effect is caused by effect of the thermal lens induced by a pumping radiation in the active medium of the laser.
S. S. Anufrik, A. P. Volodenkov, and K. F. Znosko
IEEE
The results of modeling of XeCl excilamps with barrier discharge in frequency regime are considered. Model of XeCl excilamp taking into account process of Cl2 regeneration is developed. Excilamp efficiency can reach 5 % at use of small values of storage capacity and power of radiation is 3130 W.
S. S. Anufrik, A. P. Volodenkov, and K. F. Znosko
IEEE
The results of modeling of XeCl excilamps with barrier discharge in frequency regime are considered. Model of XeCl excilamp taking into account process of Cl2 regeneration is developed. Excilamp efficiency can reach 4 % at use of small values of storage capacity and at that pulse energy is equal 0,032 J and power of radiation is 3200 W.
T. N. Kopylova, S. S. Anufrik, G. V. Mayer, T. A. Solodova, E. N. Tel’minov, K. M. Degtyarenko, L. G. Samsonova, R. M. Gadirov, S. Yu. Nikonov, E. N. Ponyavina,et al.
Springer Science and Business Media LLC
S. S. Anufrik, A. P. Volodenkov, V. F. Losev, and K. F. Znosko
Springer Science and Business Media LLC
S. S. Anufrik, V. V. Tarkovsky, G. G. Sazonko, and M. M. Asimov
Springer Science and Business Media LLC