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Thermography of Whole Blood during Laser Heating through Bare Fiber
Journal of Biomedical Photonics and Engineering. 2022. Vol. 8. No. 4. Article 040513.
Ignatieva N., Zakharkina O. L., Sviridov A. P.
The dynamics of temperature fields in whole blood during the action of continuous-wave (CW) laser radiation with wavelengths of 0.97, 1.56, and 1.68 μm for the temperature range up to 600 ºC were studied. On the blood heating thermograms four characteristic stages differing in the heating rate were distinguished. Comparison of the obtained thermograms with the data of differential scanning calorimetry of blood and its thermogravimetry with mass spectrometry of released gases made it possible to attribute these stages as the temperature rises to protein denaturation and aggregation of blood cells, formation of coagulates, and carbonization of organic blood components coagulate and burning carbon. It has been established that the duration of separate stages of laser blood heating is determined mainly by the wavelength and power of laser radiation. The results obtained may be useful for the development of automated laser systems for the obliteration of varicose veins and other vascular tissues.
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Садртдинова Г. И., Nifantiev I., Vinogradov A. et al., Russian Chemical Reviews 2025 Vol. 94 No. 9 P. 1 – 55
The reactivity of polar vinyl monomers, unsaturated compounds containing functional groups, depends on the presence or absence of conjugation between the C=C bond and the neighbouring unsaturated moieties or donor heteroatoms. Conjugated polar vinyl monomers (acrylates, vinyl ethers, etc.) (co)polymerize upon free-radical initiation. The reaction is widely used to produce numerous polymer materials that qualitatively differ ...
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Ilya Nifant’ev, Komarov P., Guzelia Sadrtdinova et al., Polymers 2024 Vol. 16 No. 5 Article 681
Silica-supported chromium oxide catalysts, also named Phillips chromium catalysts (PCCs), provide more than half of the world’s production of high- and medium-density polyethylenes. PCCs are usually prepared in the Cr(VI)/SiO2 form, which is subjected to reductive activation. It has been explicitly proven that CO reduces Cr(VI) to Cr(II) species that initiate ethylene polymerization; ethylene activates ...
Added: May 12, 2026
Bisnovatyi-Kogan G., Kondratyev I., Moiseenko S. G., International Journal of Modern Physics A 2025 Vol. 40 No. 7 Article 2550018
Bright transient objects in different wave bands have been discovered in recent years.
To explain these short (from ms to s), and very powerful events, different models, galactic and
extragalactic, have been considered. One of the popular models is based on the suggestion of
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Торопина О. Д., Бисноватый-Коган Г. С., Moiseenko S. G., Astronomy Reports 2025 Vol. 69 No. Suppl. 1 P. 80–90
The results of MHD simulations of supersonic astrophysical and laboratory jets in an external
poloidal magnetic field (Br,Bz) taking into account the rotation of the matter, are presented. The ejected
matter is collimated by the magnetic field, the degree of collimation and the flow structure depend on the
relation between of the magnetic field induction and the angular ...
Added: May 11, 2026
Гущина В. А., Russian Journal of Inorganic Chemistry 2024 Vol. 69 No. 6 P. 940–948
Currently, ABX3 nanoparticles (NPs) based on lead halides attract the attention due to their unique optical properties and a wide range of applications. The preparation of NPs with lead as a partial or complete replacement is particularly interesting because of the toxicity of this chemical element and most of its compounds. In this study, we propose a ...
Added: May 6, 2026
Morozov E. V., Demin A. S., Borovitskaya I. V. et al., Inorganic Materials: Applied Research 2026 Vol. 17 No. 3 P. 619–626
This article presents the results of experiments on the impact of powerful pulsed ion-plasma and
electron flows generated in the working chamber of the Plasma Focus PF-5M installation during each highvoltage
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damage upon exposure to pulsed flows of helium ions (HI) ...
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Ponomarev A., Aleksandrov N., Plasma Physics Reports 2026 Vol. 52 No. 3 P. 367–378
An approximate method for calculating drift velocity and other kinetic coefficients of heavy ions
in a light gas is generalized to gaseous mixtures. Obtained equations are used to calculate the mobilities of
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Domrin V. I., Malova H. V., V. Yu. Popov et al., Cosmic Research 2026 Vol. 64 No. 2 P. 238–252
During magnetospheric perturbations a relatively thin current sheet with thickness about several
proton gyroradii forms in the Earth’s magnetotail. In a framework of the kinetic model describing current
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magnetic field magnitude which affects both the current sheet structure and particle dynamics within ...
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Tsareva O. O., Malova H. V., V. Yu. Popov et al., Plasma Physics Reports 2026 Vol. 52 No. 2 P. 179–185
The influence of asymmetry of plasma sources on the structure and spatial localization of a superthin
current sheet (STCS) supported by demagnetized electrons is studied using a self-consistent model. The
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П.А.Беспалов, О.Н. Савина, Геомагнетизм и аэрономия 2025 Т. 65 № 5 С. 620–628
Several basic models of frequency dynamics in quasi-periodic VLF emissions with spectral form repetition
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Added: April 25, 2026
Bondarenko G.G., Fisher M. R., Kristya V. I., Bulletin of the Russian Academy of Sciences: Physics 2026 Vol. 90 No. 4 P. 572–576
A model of the cathode layer of a glow gas discharge with a thin dielectric film on a fraction of the
cathode’s working surface is formulated. It is shown that a glow discharge most rapidly transits to an arc discharge,
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Krasnov L., Malikov D., Kiseleva M. et al., Journal of Medicinal Chemistry 2026 Vol. 69 No. 8 P. 8838–8851
In this work, we developed a straightforward data-driven approach to predict the cytotoxicity of metal complexes based entirely on their (metal + ligands) composition. To this end, we have manually curated MetalCytoToxDB─a comprehensive experimental database comprising 26,500 IC50 values for 7050 metal complexes against 754 cell lines from 1921 articles. Based on these, machine learning ...
Added: April 23, 2026
Novikov A., Inorganic Chemistry Communications 2026 Article 116670
The reaction of copper(I) phenylacetylide [PhC ≡ CCu]n with the 2-pyridylphosphines (tBu2PyP and Ph2PyP) offers a straightforward route to structurally diverse clusters. With tBu2PyP, a trinuclear cluster [Cu3(C ≡ CPh)3(tBu2PyP)3] featuring a Cu3 triangular was isolated. Surprisingly, the reaction of [PhC ≡ CCu]n with Ph2PyP yields two isomeric clusters [Cu4(C ≡ CPh)4(Ph2PyP)4] with tetrahedral or zigzag-arranged Cu4 cores. Upon prolonged storage in acetonitrile, the tetrahedral Cu4 cluster converts to ...
Added: April 22, 2026
Lu X., Tognazzi A., Klimov V. et al., Plasmonics 2026 Vol. 21 P. 1503–1512
Plasmonic nanostructures typically exhibit shifts in their resonant wavelength in response to changes in the refractive index of the surrounding medium. This limits their applications in scenarios requiring stable optical resonances. Here we present a metallic-dielectric hybrid metasurface that exhibits stable multi-wavelength resonance even if the refractive index of its surrounding varies. To quantitatively evaluate the stability of ...
Added: April 22, 2026
Kopoleva E., Sergey A. Tsymbal, Kuchur O. et al., Drug Delivery and Translational Research 2026 P. 1–16
Multidrug resistance (MDR) remains one of the principal challenges in cancer chemotherapy, necessitating new strategies to restore drug efficacy. In this study we developed and characterize a redox-responsive nanoplatform based on trithiocyanuric acid and polyethylene glycol (TTCA-PEG NPs) as a potential tool to overcome MDR and provide a biocompatible delivery system for conventional antitumor drugs. ...
Added: April 20, 2026
Shchur L., Antonov D., Burovski E., International Journal of Bifurcation and Chaos in Applied Sciences and Engineering 2026 P. 1–9
We present a simple model that simulates the possible influence of one society on another. Specifically, two societies evolve deterministically according to the well-known Nowak-May spatial game with the addition of mutual influence through connections that reflect the current states of the societies. This may be related to the influence of a global information resource ...
Added: April 20, 2026
Qin X., Deng Y., Shchur L. et al., / Series arXiv "math". 2026. No. 2603.02962.
We perform a Monte Carlo analysis of the Ising model on many three-dimensional lattices. By means of finite-size scaling we obtain the critical points and determine the scaling dimensions. As expected, the critical exponents agree with the three-dimensional Ising universality class for all models. The irrelevant field, as revealed by the correction-to-scaling amplitudes, appears to ...
Added: April 20, 2026
Магсумова О. А., Ryskina H., Постников М. А. et al., Клиническая стоматология 2022 Т. 25 № 4 С. 88–92
There are interactions between the oral fluid and blood, showing the status of the hematosalivary barrier, which is a kind of non-specific adaptive mechanism. The purpose of this work is to assess the correlation between the biochemical parameters of the oral fluid and blood of patients after the office teeth whitening procedure. This study involved ...
Added: June 9, 2025
Katunina E., Blokhin V., Nodel M. et al., International Journal of Molecular Sciences 2023 Vol. 24 No. 3 Article 1842
Parkinson’s disease (PD) is diagnosed many years after its onset, under a significant degradation of the nigrostriatal dopaminergic system, responsible for the regulation of motor function. This explains the low effectiveness of the treatment of patients. Therefore, one of the highest priorities in neurology is the development of the early (preclinical) diagnosis of PD. The ...
Added: March 4, 2024
Ignatieva N., Захаркина О. Л., Свиридов А. П., Современные технологии в медицине 2023 Т. 15 № 6 С. 31–39
Цель исследования — оценка эффективности лазерной спайки биологических тканей и материалов для объемного прогрева альбуминового припоя на примере соединения интактного и химически модифицированного хрящей перегородки носа свиньи. Материалы и методы. Материалами для соединения служили двукратно трипсинизированные и обработанные глицериновым альдегидом пластины, изготовленные из хряща перегородки носа свиньи, и интактный хрящ. Для спайки этих материалов в ...
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N. Yu. Ignatieva, Zakharkina O. L., Sviridov A. P., Sovremennye Tehnologii v Medicine 2023 Vol. 15 No. 6 P. 31–37
The aim of the study was to assess the effectiveness of laser soldering of biological tissues and materials for bulk heating of albumin solder on the joints of the intact and chemically modified cartilage of the porcine nasal septum.
Materials and Methods. The materials for soldering were double-trypsinized and glyceraldehyde-treated plates made from cartilage of the porcine nasal ...
Added: February 6, 2024
Рахманова Л. Я., Давыдова Е. А., Давыдов В. Н., Сибирские исторические исследования 2022 № 2 С. 181–206
The Yamal and Chukotka agro-industrial complexes are going through a period of reform, during which the slaughter of reindeer with the help of an electric shock or an air pistol becomes the norm from a technological and sanitary point of view. On the one hand, traditional reindeer slaughter technologies as techniques of killing are saturated with symbolic meanings that ...
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N.Yu. Ignat'eva, Zakharkina O. L., Sviridov A. P. et al., Quantum Electronics 2022 Vol. 52 No. 1 P. 78–82
Experiments modelling endovenous laser obliteration (EVLO) are performed. As a result, laser radiation powers Pc at which collagen denaturation, tissue necrosis, and vasa vasorum destruction occur throughout the entire venous-wall thickness and, at the same time, the surrounding tissues are not subjected to unnecessary heating, are found. The main criterion for determining Pc is the ...
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Sobolev N., Ellingsen D., Belova N. et al., Environment International 2021 Vol. 152 No. 29 Article 106510
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