Tula State University

Gender differences in stress perception and coping strategies through physical activity among students of Tula universities

Irina Dutova, Vera Borisova

The purpose of the study is to analyze stress perception, its contributing factors, and coping strategies among first-year students, taking into account gender differences. Research methods and organization. Methods of analysis and synthesis of literary sources, questionnaires, and methods of mathematical statistics …

ru (code pays fourni par la source)

Prevention of anastomotic leakage in esophagogastroplasty (anatomical, experimental and clinical study)

A V Mariyko, В Д Паршин, Elena V. Parfenchikova, V A Mariyko et autres

Background. Anastomotic leakage after esophagogastroplasty is a severe complication attributed to insufficient conduit length and ischemia of its proximal segment. A method combining graft lengthening and perfusion improvement without microsurgical intervention is needed. Material and methods. A translational study was performed: right …

ru (code pays fourni par la source)

Effect of potential on the kinetics of electrochemical graphite exfoliation and the properties of composites based on aniline-functionalized graphene oxide

A. A. Kovaleva, Pavel V. Oskin, Elena D. Dmitrieva, Sergey Valerievich Alferov

This article reports an electrochemical approach for the one-step synthesis of aniline-functionalized graphene oxide. The effects of applied exfoliation potentials ranging from 7.5 to 9.5 V on the kinetic parameters of electrolyte ion intercalation into the graphite interlayer space and graphite exfoliation, …

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Efficient Chitosan–Ferulic Acid Hydrogel Formation at Neutral pH by a Two-Domain Bacterial Laccase: Mechanistic and Functional Study

Alexandr Dmitruk, Pavel V. Oskin, Artem Yushkin, Sergey Valerievich Alferov et autres

For the first time, for oxidative cross-linking of chitosan with a natural polyphenol, ferulic acid, the so-called small two-domain bacterial laccase, was used. Recombinant Streptomyces carpinensis laccase (ScaSL) has been shown to oxidize ferulic acid in neutral and alkaline environments, which is …

ru (code pays fourni par la source)

Matryoshka multistable system with uncountable infinity of attractors and closed-form nonlinearity

Igor Burkin, Vyacheslav G. Rybin, I.Yu. Babkin, Oksana Kuznetsova et autres

ru (code pays fourni par la source)

Effect of Freezing Temperatures on the Photosynthetic Apparatus in the Branch Chlorenchyma of the Invasive Tree Acer negundo

Konstantin G. Tikhonov, M. O. Kryuchkova, Sergey A. Khorobrykh, Tatyana Savchenko

Photosynthetic apparatus in the chlorenchyma tissues of branches of perennial land plants has developed strategies that allow it to withstand significant temperature fluctuations throughout all seasons. In this study, we investigated the effect of freezing temperature treatment on the functional activity of …

ru (code pays fourni par la source)

Microwave Pyrolysis of Spent Activated Carbon-Laden Sludge: A Critical Review of Regeneration, Cross-Phase Pollutant Transfer, and Environmental Reactivity

Yongxiao Liu, Lu Liu, Hao Zheng, Vyacheslav A. Arlyapov et autres

Spent activated carbon-laden sludge (SACLS) is a composite residue containing a potentially recoverable porous carbon matrix together with organic contaminants, mineral phases, and heavy metals, thereby creating simultaneous resource-recovery and environmental-risk challenges. This review critically evaluates microwave pyrolysis as a strategy for …

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Origins of universality of copper-catalyzed azide-alkyne cycloaddition

Bogdan Ya. Karlinskii, Valentine P. Ananikov

The copper-catalyzed azide-alkyne cycloaddition (CuAAC) is the flagship transformation of click chemistry and one of the most versatile reactions in modern synthesis. Yet its operational simplicity should not be mistaken for a single-species, universal catalyst. In practice, efficient CuAAC depends on matching …

ru (code pays fourni par la source)

Polypyrrole–ferrocene–biofilm electrode for rapid BOD biosensing and energy recovery from wastewater: Bayesian calibration for field application

George Gurkin, Ivan Bespalov, Alexey Efremov, Roman Perchikov et autres

ru (code pays fourni par la source)

Engineering biofilm growth regimes in FDM-printed plastics through material selection

Saniyat K. Kurbanaliyeva, Victoria A. Alekseeva, Daria V. Provotorova, Vyacheslav A. Arlyapov et autres

Biofilm formation on 3D-printed surfaces presents either a challenge to mitigate or an opportunity to exploit. While medical and industrial applications require suppressing microbial colonization, biofilm-based biotechnologies rely on rapid, stable establishment. Here, we demonstrate that FDM-printed plastics define tunable regimes of …

ru (code pays fourni par la source)

A CLINICAL CASE OF ANKYLOSING SPONDYLITIS IN A PATIENT WITH DYSPLASTIC SCOLIOSIS

A. Hochenkova, Elena Belyaeva

Damage to the musculoskeletal system is one of the most common manifestations of rheumatic diseases. However, the reason for its involvement in the pathological process may be other diseases or their combinations. Ankylosing spondylitis (AS) is one of the most difficult to …

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CHEMORADIATION AND ANTI-PD-1 THERAPY FOR RECTAL CANCER IN A PATIENT WITH MULTIPLE PRIMARY TUMORS: A RARE CLINICAL CASE

M. Bobkov

The article presents a rare clinical case of a 69-year-old patient with three multi-ple primary malignant tumors: cutaneous melanoma (pT4aN2bM0, stage IIIb), synchronous left renal cell carcinoma (cT2N0M0, stage II), and low-ampullary rectal cancer (cT2N0M0, stage I, pMMR/MSS). Treatment with the PD-1 …

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