Sergii Pavlov

Analysis of the uniformity of the power density distribution at the output of a multimode optical fiber

V.S. Lukasevych, O. S. Komarova, Vladimir V. Kholin, Sergii Pavlov et autres

The influence of the bending radius of a multimode optical fiber with a step-index refractive profile on the spatial distribution of laser radiation power density at the fiber output was investigated. For the experiment, a thermally stabilized laser module based on three …

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Spatial patterns and prognostic relevance of CD1a+ immature and CD208+ mature dendritic cells in colorectal cancer from non-tumor adjacent mucosa to liver metastases

Sergii Pavlov, Esraa Ali, Wenjing Ye, Lenka Červenková et autres

Abstract The prognostic role of dendritic cells (DCs) in colorectal cancer (CRC) and paired liver metastases (LM) remains unclear, particularly regarding the dynamics of immature CD1a + and mature CD208 + subsets across anatomical compartments and synchronous versus metachronous disease. Patients and …

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Investigation of the Impact of Peri‐Implantitis Processes on Interleukin Profiles in Peri‐Implant Crevicular Fluid

Kristina Volchykhina, O. M. Manukhina, Ika Dewi Ana, Natalia Beshchasna et autres

OBJECTIVES: This study aimed to verify the methodology for investigation of interleukin (IL) concentrations in peri-implant crevicular fluid (PICF) and to assess their correlation with clinical parameters, particularly bleeding on probing (BOP) and probing pocket depth (PPD). MATERIAL AND METHODS: PICF was …

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B cells in the peritumor region of primary colorectal cancer and synchronous liver metastasis associate with longer survival

Wenjing Ye, Esraa Ali, Sergii Pavlov, Filip Ambrożkiewicz et autres

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Design and architecture of a multifunctional laser introscopy system for polycrystalline architecture of human tissues and fluids

Vladyslava V. Sholota, Sergii Pavlov, Elena I. Kurek

This study investigates the topographic structure of bile film maps (dehydrated layers) exhibiting dichroism to identify markers for assessing the self-similarity (multifractality) of supramolecular networks. A novel optical approach was developed, integrating Jones-matrix polarization–interference reconstruction with an algorithm for mapping the layer-by-layer …

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Spatial Patterns and Prognostic Relevance of CD1a Immature and CD208 Mature Dendritic Cells in Colorectal Cancer From Tumour-adjacent Mucosa to Liver Metastases

Sergii Pavlov, Esraa Ali, Wenjing Ye, Lenka Červenková et autres

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An Application of Deep Learning for Predicting Tomato Growth After Seed Irradiation

Orken J. Mamyrbayev, Waldemar Wójcik, Sergii Pavlov, Keylan Alimhan et autres

Optimizing growth conditions for tomato crops is essential due to their sensitivity to environmental factors. Pre-sowing seed treatments, particularly irradiation with specific wavelengths, can significantly influence germination and subsequent plant development. This study investigates how five laser wavelengths (red 630 nm, green …

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Methods and means of laser layer Jones matrix mapping of polycrystalline films of biological fluids

Olexander G. Ushenko, Ірина Василівна Солтис, Olexander V. Dubolazov, Sergii Pavlov et autres

The results of the theoretical substantiation and experimental validation of a novel laser polarization-interference method for Jones matrix mapping with digital phase layer-by-layer scanning of the object field of polycrystalline bile films are presented. Statistical analysis of the layer-by-layer maps of the …

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ПОЙЫЗДАР ҚОЗҒАЛЫСЫН ИНТЕРВАЛДЫ РЕТТЕУДІҢ ӘРТҮРЛІ ЖҮЙЕЛЕРІНДЕ АРАЛЫҚТЫҢ ӨТКІЗУ ҚАБІЛЕТІН МОДЕЛЬДЕУ

Ж. Е. Шукаманов, Гүлфариза Сүлейменова, Sergii Pavlov

Бұл мақалада теміржол желісінде пойыздар қозғалысының қауіпсіздігін және өткізу қабілетін қамтамасыз ету мақсатында қолданылатын жартылай автоматты блоктау, автоматты блоктау және радиоблоктау жүйелерінің жұмыс принциптері талданды. Әр жүйенің құрылымдық және функционалдық ерекшеліктері сипатталып, қозғалысты интервалды реттеу механизмдері мен пойыздардың орын ауыстыру логикасы математикалық …

Hybrid Neural Architectures Combining Convolutional and Recurrent Networks for the Early Detection of Retinal Pathologies

Orken J. Mamyrbayev, Sergii Pavlov, Oleksandr Poplavskyi, Kymbat Momynzhanova et autres

Early and accurate detection of retinal pathologies is critical for preventing vision loss and enabling timely clinical intervention. Traditional computer vision techniques, such as thresholding, edge detection, morphological filtering, and Hough transforms, have long been used to extract features from retinal fundus …

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Классификация рака молочной железы используя методы машинного обучения

A. Aryn, Orken J. Mamyrbayev, Sergii Pavlov

Статья посвящена исследованию методов классификации рака молочной железы с использованием современных технологий машинного обучения, таких как многослойный персептрон (MLP, Multi-Layer Perceptron), метод опорных векторов (SVM, Support Vector Machine), логистическая регрессия (Logistic Regression), (математическая регрессия), метод K-ближайших соседей (KNN, K-Nearest Neighbors), экстремальное повышение …

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Diagnostic capabilities of Jones matrix theziogaphy of the multifractal structure of dehydrated blood films

Yuriy Ushenko, Ірина Василівна Солтис, Olexander V. Dubolazov, Sergii Pavlov et autres

The paper proposes the use of multifractal analysis by algorithmic implementation of coordinate reconstructed distributions of linear birefringence magnitude and obtaining a spectrum of fractal dimensions of dehydrated polycrystalline blood films. The results of the diagnostic application of laser Jones matrix theziography …

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