Natalia A. Kosheleva

Acetazolamide per os in Decompensated Chronic Heart Failure: Randomized Multicenter Trial ORION-A

Ibragim S. Sabirov, Olesya A. Rubanenko, Svetlana V. Villevalde, А. О. Рубаненко et autres

Background/Objectives: Overcoming resistance to diuretics is extremely important in decompensated chronic heart failure (HF). The objective of this study was to assess the efficacy and safety of oral acetazolamide, in addition to standard therapy, in HF patients admitted to the hospital with …

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Microstructured Waveguide Sensors for Point-of-Care Health Screening

Svetlana S. Konnova, Pavel A. Lepilin, Anastasia A. Zanishevskaya, Alexey Y. Gryaznov et autres

Biosensor technologies in medicine, as in many other areas, are replacing labor-intensive methods of monitoring human health. This paper presents the results of experimental studies on label-free sensors based on a hollow core microstructured optical waveguide (HC-MOW) for human blood serum analysis. …

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Microstructured Waveguide Sensors for Point-of-Care Health Screening

Svetlana S. Konnova, Pavel A. Lepilin, Anastasia A. Zanishevskaya, Alexey Y. Gryaznov et autres

Biosensor technologies in medicine, as in many other areas, are replacing labor-intensive methods of monitoring human health. In this paper, the results of experimental studies of label-free sensors based on hollow-core microstructured optical waveguide (HC-MOW) for human blood serum analysis obtained. The …

Measurement of technological strains and defect detection using fiber-optic sensors embedded in concrete and cement mixture samples

Andrey Yu. Fedorov, Grigorii S. Serovaev, Natalia A. Kosheleva

This paper presents various applications of fiber-optic sensors (FOS) in concrete and cement mixture samples, demonstrating new capabilities for assessing the mechanical state of structures. The geometrical dimensions and physical characteristics of FOS allow these sensors to be embedded into materials during …

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Investigation of fiber Bragg grating's spectrum response to strain gradient

В. П. Матвеенко, Grigorii S. Serovaev, Natalia A. Kosheleva, Elizaveta B. Galkina

The paper investigates the impact of strain gradient on the reflected spectrum of fiber Bragg gratings (FBGs) of varying lengths (5, 10, and 15 mm), inscribed using two techniques: phase mask method and point-by-point inscription with a femtosecond laser. A geometric configuration …

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PSYCHOLOGICAL CHARACTERISTICS OF STRESS MANIFESTATIONS IN HIGH SCHOOL STUDENTS

Natalia A. Kosheleva, Iryna Trenbach

The article discusses an important issue of stress among high school students. It identifies that adolescence can be accompanied by significant stress due to substantial changes in physical, emotional, social, and psychological development. The main stress factors for high school students are …

INVESTIGATION OF THE STABILITY OF FBG SENSOR MEASUREMENTS UNDER VARIOUS CLIMATIC CONDITIONS

Grigorii S. Serovaev, Natalia A. Kosheleva

The sensing elements used to measure various parameters, including strain, are not only expected to ensure the reliability of the measured values, but also the stability of the measurements over a long period of time when exposed to various environmental conditions. The …

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Strain registration in the gradient zone by two types of fiber-optic sensors

В. П. Матвеенко, Natalia A. Kosheleva, Grigorii S. Serovaev

Reliable measurement of strain in various sections of the monitored structure is an important problem for creating Structural Health Monitoring systems. Fiber-optic sensors have great potential to solve this problem. This paper presents the results of experiments on strain measurements in zones …

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Measurement of Gradient Strain Fields with Fiber-Optic Sensors

В. П. Матвеенко, Natalia A. Kosheleva, Grigorii S. Serovaev, Andrey Yu. Fedorov

The results of measuring gradient strain fields by embedded or mounted point fiber-optic sensors based on Bragg gratings and distributed fiber-optic sensors based on Rayleigh scattering are discussed. Along with the experiment, the results of numerical modeling of strain measurement errors associated …

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Numerical and experimental analysis of the reliability of strain measured by surface‐mounted fiber‐optic sensors based on Bragg gratings

В. П. Матвеенко, Grigorii S. Serovaev, Natalia A. Kosheleva, Andrey Yu. Fedorov

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Strain measurements by FBG-based sensors embedded in various materials manufactured by different technological processes

В. П. Матвеенко, Natalia A. Kosheleva, Grigorii S. Serovaev

The paper presents a study devoted to the registration and analysis of experimental results obtained from fiber-optic sensors based on Bragg gratings embedded in samples made of various materials at the technological stage of their manufacture. As the materials into which the …

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Measurement of strain and temperature by fiber-optic sensors embedded into samples manufactured by additive technology

В. П. Матвеенко, Natalia A. Kosheleva, Grigorii S. Serovaev

The paper demonstrates the possibility of using embedded point and distributed fiber-optic sensors to register data on the mechanical state of structures made by fused deposition modeling from thermoplastic materials. The performance of two types of fiber-optic sensors was demonstrated at the …

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