# materials methods (blogs) — RSS Amplifier Recent posts from the 3 feeds in the RSS Amplifier directory that cover materials methods. Page: Feed: --- ## [The life path of the distinguished Russian surgeon V.M. Subbotin](https://permmedjournal.ru/PMJ/article/view/695800) _2026-07-10 · Perm Medical Journal_ This article explores the life of the renowned Russian surgeon Vyacheslav Mikhailovich Subbotin (1940–2025). He graduated from the Perm Medical Institute and then completed postgraduate studies at the Moscow Research Institute of Clinical and Experimental Surgery. In 1969, he defended his PhD dissertation in Moscow on "Anatomical, Experimental, and Clinical Materials on Tracheal Surgery." He… ## [A lifetime of service. The Kazan period. On the anniversary of Professor Pavel Ivanovich Pichugin](https://permmedjournal.ru/PMJ/article/view/716283) _2026-07-10 · Perm Medical Journal_ This article is dedicated to Professor Pavel Ivanovich Pichugin—an outstanding pediatrician, scientist, educator, public figure, head of the Department of Pediatric Diseases, and founder of the first Children's Clinic in the Western Urals, which later became the only clinical institution training pediatricians. Over time, new archival facts become available, key events are being reinterpreted, and… ## [Use of natural mineral water to correct experimental dysbiosis in laboratory animals](https://permmedjournal.ru/PMJ/article/view/705689) _2026-07-10 · Perm Medical Journal_ Objective. To study the effect of mineral water of Klyuchi Resort therapeutic and table mineral water on the intestinal microbiome of white mice with experimental dysbiosis. We have previously demonstrated the bacteriotropic effect of this mineral water on the obligate intestinal microbiota in vitro . The present study investigated the effect of this mineral water on the correction of experimental… ## [The role of physical training in correcting metabolic inflammation parameters, body structure indices and vascular wall stiffness in patients with arterial hypertension in the post-COVID period](https://permmedjournal.ru/PMJ/article/view/704174) _2026-07-10 · Perm Medical Journal_ Objective. To study the impact of regular physical exercise on the dynamics of systemic metabolic inflammation biomarkers, body composition indices, muscle mass, and vascular elasticity parameters in patients with arterial hypertension who recovered from COVID-19. Materials and methods. This single-center prospective interventional study included 74 patients with hypertension 3 months after… ## [Validation of an AI model for bone age assessment in children and adolescents for the development of a multimodal diagnostic platform](https://permmedjournal.ru/PMJ/article/view/699624) _2026-07-10 · Perm Medical Journal_ Objective. To conduct a comprehensive validation of the developed artificial intelligence model for bone age assessment using hand and wrist radiographs in children and adolescents. Materials and methods. Training a convolutional neural network for bone age regression (in months) using a dataset of hand and wrist radiographs from children and adolescents. Results. The mean absolute error (MAE) of… ## [Diagnostic capabilities of a portable ultrasound system for lung pathologies, including pneumonia, in children](https://permmedjournal.ru/PMJ/article/view/696934) _2026-07-10 · Perm Medical Journal_ Objective. Тo evaluate the feasibility, convenience, and effectiveness of diagnosing lung pathologies, including pneumonia, in children using a portable ultrasound system. The use of ultrasound in medical practice has become a landmark breakthrough, significantly improving the quality of care and increasing diagnostic accuracy. In terms of versatility and mobility, portable ultrasound systems with… ## [Clinical neurological syndromes and the structure of limitations in daily activities in children within the early intervention system: results of a retrospective study](https://permmedjournal.ru/PMJ/article/view/697004) _2026-07-10 · Perm Medical Journal_ Objective. To identify the key features of children's functioning in the early intervention system, taking into account their existing clinical syndromes, activity limitations, and environmental factors. Materials and methods. The clinical diagnoses and primary neurological syndromes in children receiving early intervention services in 2019 are described. In assessing the level of functioning, the… ## [Early markers of developmental motor dysphasia](https://permmedjournal.ru/PMJ/article/view/703217) _2026-07-10 · Perm Medical Journal_ Objective. To determine early markers of developmental motor dysphasia. Neurodevelopmental disorders have various clinical manifestations, age of manifestation, and severity. One of the urgent tasks is to identify early predictors of deviant variants of children's development. Speech development disorder is observed in 3–7 % of observations in the pediatric population. Fundamental and early stages… ## [The influence of sex and gender peculiarities on quality of life in patients with the diagnosis of multiple sclerosis](https://permmedjournal.ru/PMJ/article/view/691744) _2026-07-10 · Y. A. Pichkaleva · Perm Medical Journal_ Objective. The present study expands our understanding of the role of sex and gender in the quality of life of patients with multiple sclerosis. Taking stress into account, allows a deeper investigation of the problem concerning the influence of sex and gender characteristics on the quality of life of patients with multiple sclerosis. Materials and methods. The study included 100 patients with… ## [Sarcopenic obesity in adolescents: prevalence, diagnostic criteria and predisposing factors](https://permmedjournal.ru/PMJ/article/view/682078) _2026-07-10 · Perm Medical Journal_ Objective. To study the prevalence of sarcopenic obesity in adolescents, to substantiate diagnostic criteria, and to identify possible predisposing factors and consequences. Materials and methods . A standard clinical and laboratory study was conducted in 63 adolescents aged 12–17 years with obesity, including assessment of body composition, biochemical blood testing and hormonal profile analysis… ## [Watch Chovy Code Live (Sponsored)](https://crawlproof.com/a/7DSAwl60peei) _2026-07-10 · **Sponsored**_ Join live coding streams with real-time collaborative screen sharing, open source and free. ## [Informative Value of Ultrasonography in the Diagnosis of Low-Weight Fetus and Fetal Growth Retardation Syndrome](https://ogarev-online.ru/2311-2468/article/view/380157) _2026-06-29 · Ogarev-online_ Introduction. Low-weight fetus and fetal growth retardation syndrome remain an urgent problem in modern obstetrics due to the high risk of perinatal morbidity. The aim is to evaluate the informative value of ultrasonography in the diagnosis of these conditions and to analyze associated risk factors. Materials and Methods. A retrospective and prospective analysis of 187 clinical observations of… ## [Multigrid Method for Solving the Poisson Equation in Cylindrical Coordinates on Graphics Processing Unit](https://ogarev-online.ru/2311-2468/article/view/396148) _2026-06-29 · Vitaliy V. Loginov · Ogarev-online_ Introduction. Solving elliptic partial differential equations, such as the Poisson equation, is a computationally expensive step in modeling physical processes in cylindrical engineering systems, including plasma traps and particle accelerators. The aim of the work is to create a high-performance implementation of a geometric multigrid method for cylindrical coordinates based on the technology of… ## [Study of mechanical properties of polylactide produced by FFF method](https://ogarev-online.ru/2311-2468/article/view/353952) _2026-06-29 · Ogarev-online_ Introduction. The active introduction of additive technologies into industry requires accurate prediction of the mechanical properties of products, which significantly depend on the settings of the printing process. The aim of the study is to identify the influence of the degree of internal filling (from 15 to 100 %) on the strength properties of polylactide samples produced by printing by… ## [Perspective on Physical Education as a Means of Promoting a Healthy Lifestyle: A Review](https://ogarev-online.ru/2311-2468/article/view/408590) _2026-06-29 · Ogarev-online_ Introduction. In the context of the global decline in physical activity among young people, the search for effective pedagogical approaches to the promotion of a healthy lifestyle by means of physical education is becoming particularly relevant. The growth of a sedentary lifestyle requires the introduction of innovative strategies for sustained motivation to exercise. The purpose of the study is… ## [Transformation of Genre Forms in a Regional Socio-Political Newspaper in the Context of Media Convergence: A Study of the Izvestia of Mordovia Newspaper](https://ogarev-online.ru/2311-2468/article/view/416924) _2026-06-29 · Ogarev-online_ Introduction. Competing with user-generated content, regional socio-political newspapers are forced to adapt their genre structure to the digital environment. The purpose of the work is to identify the specifics of genre transformation in the online version of the Izvestia of Mordovia newspaper. Materials and Methods. Publications on the izvmor.ru Internet portal for 2022–2024 were used as study… ## [Digital Hygiene in the Context of Cyber Threats: Knowledge, Behavioral Practices, and Vulnerability of the Population](https://ogarev-online.ru/2311-2468/article/view/426051) _2026-06-29 · Ogarev-online_ Introduction. The rapid pace of digitalisation is accompanied by a rise in cyber threats, which brings the issue of digital hygiene to the forefront. The aim of the study is to assess the level of digital hygiene (cognitive competencies and behavioural practices), awareness of specific threats, and victimisation experience among the adult population of a regional centre, as well as to identify the… ## [Searching for a Job: University Graduates' Awareness of the Labor Market](https://ogarev-online.ru/2311-2468/article/view/412464) _2026-06-29 · Marina V. Fedoseeva · Ogarev-online_ Introduction. This article analyzes the problems of information support in the regional labor market, specifically, university graduates' awareness of available job openings. The objective is to use empirical data to identify the sources of university graduates’ awareness of job openings in the regional labor market and to determine the relationship between the level of this awareness and regional… ## [Modern Information Technologies in Financial Management: Challenges, Prospects and Implementation Cases](https://ogarev-online.ru/2311-2468/article/view/365661) _2026-06-29 · Ogarev-online_ Introduction. Modern information technologies form an interconnected ecosystem of financial management. The practical significance lies in the development of an algorithm for overcoming personnel, integration and cyber risks. The development prospects are related to the convergence of predictive analytics, explicable artificial intelligence, and distributed ledgers. Materials and Methods. The… ## [How Modern Youth Perceive a Brand: From Functionality to a Semantic Ecosystem](https://ogarev-online.ru/2311-2468/article/view/411280) _2026-06-29 · Tatiana L. Sysoeva · Ogarev-online_ Introduction. Classical models of brand management, which consider a brand as a set of identification attributes and functional benefits, do not fully reflect the transformation of the views of Generation Z, who grew up in a digital environment and demonstrate a high level of skepticism towards traditional advertising. The scientific problem lies in the insufficient study of the underlying… ## [Mapping the Global Landscape of Digital Currencies: A Scoping Review](https://ogarev-online.ru/2311-2468/article/view/396082) _2026-06-29 · Ogarev-online_ Introduction. One of the most significant changes in the last several years is the digitization of money. This interdisciplinary field of research attracts the attention of economists, business managers, and computer technology specialists. However, these studies are still considered different fields of study. Hence, the wide area of digital currency research lacks a single framework that defines… ## [Find it on Amazon (Sponsored)](https://crawlproof.com/a/ptWSPxXA855Q) _2026-06-29 · **Sponsored**_ Open the Amazon product listing to see details and availability ## [SEGMENTAL VASCULAR BURDEN AND OUTCOMES IN DIABETIC VS. NON-DIABETIC CHRONIC LIMB-THREATENING ISCHEMIA AFTER ENDOVASCULAR REVASCULARIZATION](https://revmedchir.ro/index.php/revmedchir/article/view/3399) _2026-06-20 · The Medical-Surgical Journal_ Peripheral artery disease (PAD) progressing to chronic limb-threatening ischemia (CLTI) is associated with high morbidity and limb loss. Diabetes mellitus (DM) significantly influences disease distribution and clinical outcomes. The Bollinger score, GLASS classification, and WIfI staging are complementary tools for assessing anatomical burden and limb threat. This study aimed to analyze the… ## [LONGITUDINAL CLINICAL STUDY ON THE PREVALENCE AND RISK FACTORS OF ROOT CARIES IN ELDERLY PATIENTS](https://revmedchir.ro/index.php/revmedchir/article/view/3398) _2026-06-20 · The Medical-Surgical Journal_ Dental caries remains one of the most common oral diseases, with a multifactorial etiology involving biological, behavioral, socio-economic, and age-related factors. In elderly patients, physiological changes, systemic diseases, polypharmacy, reduced salivary flow, and gingival recession increase susceptibility to root caries. The aim of this study was to evaluate the prevalence of coronal and… ## [ASSESSMENT OF ROOT CANAL OBTURATION AND THE ADHESION OF ENDODONTIC SEALERS TO THE DENTIN WALLS OF THE ROOT](https://revmedchir.ro/index.php/revmedchir/article/view/3397) _2026-06-20 · The Medical-Surgical Journal_ This study aims to compare the quality of root canal obturation achieved using different obturation techniques and to evaluate the adaptation of the interface between epoxy resin- based sealants and gutta-percha to the dentin walls of the root canal. Materials and methods: Thirty-six extracted single-rooted human teeth were used, prepared according to a standardized protocol and filled with… ## [ATOMIC FORCE MICROSCOPY CHARACTERIZATION OF A THREE-DIMENSIONAL PORCINE COLLAGEN MATRIX FOR PERIODONTAL APPLICATIONS UNDER HYDRATED CONDITIONS](https://revmedchir.ro/index.php/revmedchir/article/view/3396) _2026-06-20 · The Medical-Surgical Journal_ The aim of this study was to characterize the nanoscale surface topography of a three-dimensional porcine collagen matrix under hydrated conditions, simulating a physiologically relevant environment. Materials and methods: Atomic force microscopy (AFM) was performed in hydrated conditions to evaluate surface topography, deflection signal, three-dimensional reconstruction, surface profile, and… ## [PERSONALITY TRAITS AND MONEY ATTITUDES AMONG SCHOOLTEACHERS: AN EXPLORATORY PSYCHOLOGICAL ANALYSIS](https://revmedchir.ro/index.php/revmedchir/article/view/3395) _2026-06-20 · The Medical-Surgical Journal_ Financial well-being is a multidimensional construct that reflects perceived financial control and security. While it is not directly measured in this study, money attitudes represent an important cognitive-affective component associated with financial well-being. Materials and methods: This cross-sectional study examined the relationship between personality traits and money attitude dimensions… ## [MEANING IN LIFE AS A MEDIATOR BETWEEN CONSERVATISM AND QUALITY OF LIFE AMONG OLDER ADULTS: A CROSS-SECTIONAL STUDY](https://revmedchir.ro/index.php/revmedchir/article/view/3393) _2026-06-20 · The Medical-Surgical Journal_ Population aging presents growing challenges for maintaining quality of life in later adulthood. Conservative personal values and existential meaning are both associated with well-being in older adults, yet their functional relationship remains unclear. Aim: The present study aimed to investigate the mediating mechanism through which the presence of meaning in life influences the relationship… ## [DEMOGRAPHIC AND CLINICAL FEATURES WITH SURGICAL CONSIDERATIONS IN ADULT CRANIOPHARYNGIOMAS: A ROMANIAN NEUROSURGICAL CENTER EXPERIENCE](https://revmedchir.ro/index.php/revmedchir/article/view/3391) _2026-06-20 · The Medical-Surgical Journal_ Craniopharyngiomas (CPs) are rare benign epithelial tumors of the sellar-suprasellar region that remain surgically challenging. Aim : To evaluate the clinical, imaging, pathological and surgical aspects of CPs diagnosed in adult patients as such previous analyses are rare. Materials and methods: We performed a retrospective study that included adult patients (≥18 years) with surgical treated and… ## [ASSOCIATION BETW1EEN LIFESTYLE FACTORS AND OSTEOPOROSIS: A CROSS-SECTIONAL STUDY IN A ROMANIAN POPULATION](https://revmedchir.ro/index.php/revmedchir/article/view/3390) _2026-06-20 · The Medical-Surgical Journal_ Osteoporosis is a major public health problem characterized by reduced bone mass and increased fracture risk. Lifestyle factors play an important role in its development and prevention. This study examines the relationship between lifestyle factors and osteoporosis in an adult Romanian population, providing recommendations for prevention through adequate calcium and vitamin D intake and the… ## [EXPLORING THE EFFECTS OF PEPSIN ON SALIVARY PEPTIDOME: INSIGHTS FROM A PROOF-OF-CONCEPT PROTEOMIC PROFILING STUDY USING MALDI-ToF MASS SPECTROMETRY](https://revmedchir.ro/index.php/revmedchir/article/view/3389) _2026-06-20 · The Medical-Surgical Journal_ Pepsin, a component of gastric refluxate, has been investigated as a potential salivary biomarker for gastro-esophageal reflux disease (GERD), although its diagnostic accuracy remains uncertain. This proof-of-concept study aimed to characterize the effects of pepsin on the human salivary peptidome using matrix-assisted laser desorption/ionization-time of flight (MALDI-ToF) mass spectrometry.… ## [CLI-first decentralized compute (Sponsored)](https://crawlproof.com/a/rUZDaIQ6dphv) _2026-06-19 · **Sponsored**_ Run and pay spare GPUs from the CLI — transcode, coinpay (DID+escrow), infernet (AI). ## [IN VIVO BIOCOMPATIBILITY EVALUATION OF NORFLOXACIN-LOADED CHITOSAN NANOFIBERS AND BORONIC ALDEHYDE-FUNCTIONALIZED DERIVATIVES IN RAT](https://revmedchir.ro/index.php/revmedchir/article/view/3388) _2026-06-20 · The Medical-Surgical Journal_ Chitosan-based nanofibers can serve as carriers for antimicrobial agents, providing controlled drug release and biocompatibility, which are crucial for tissue integration and healing. This study aimed to evaluate the in vivo biocompatibility of norfloxacin-loaded chitosan nanofibers (NorC) and norfloxacin-loaded chitosan nanofibers functionalized with boronic aldehyde (NorCB), in comparison with…