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Investigating the Thermal Properties of Hydrated Salt Phase Change Material Nanocomposites in the Prevention of Heat Stress
Published 2025-07-01“…This study focuses on synthesizing and thermal optimizing a sodium sulfate decahydrate-based nanocomposite incorporating various nanoparticles to improve its performance for personal thermal regulation applications. Material and Methods: The composite was prepared using sodium sulfate decahydrate as the base PCM. …”
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Convergent laser beam shapes: Unveiling the dynamics of Laser-induced elastic waves in composite materials
Published 2024-12-01“…Overcoming the low signal-to-noise ratio (SNR) in laser ultrasonic testing of composite materials remains a significant challenge. Current efforts focus on enhancing SNR by inserting more energy into the material through temporal and/or spatial modulation of the laser beam. …”
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946
Point-of-care N-terminal pro-brain natriuretic peptide testing in patients with heart failure: data from the DREAM study
Published 2024-06-01“…To compare the blood levels of N-terminal pro-brain natriuretic peptide (NTproBNP), determined using a Russian semi-quantitative point-of-care test and quantitative laboratory tests, depending on the presence and severity of heart failure (HF) and left ventricular (LV) function.Material and methods. …”
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Evaluation of Flexural Strength and Vickers Micro Hardness of Three Different Denture Base Resin Materials
Published 2024-12-01“…Objectives: To evaluate the Vickers hardness and flexural strength of computer-aided design/computer-aided manufacture (CAD/CAM) milled, 3D-printed, and traditional heat-polymerized denture base resins used in computer-aided design and manufacture. Materials and Methods: A total of 60 samples were fabricated from CAD/CAM milled resin (PMMA dental material-Ruthinium disc, Badia Polesine (Rovigo) Italy), CAD/CAM 3D-printed resin (NextDent Denture 3D+, Soesterberg, The Netherlands) and conventional heat-polymerized (HP) denture base resin (DBR) (Triplex hot Ivoclar-Vivadent, Liechtenstein). …”
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Realización computacional en tres dimensiones del Método de los Elementos de Contorno en la teoría de la Elasticidad // Three dimension computational realization of the Method of t...
Published 2000-03-01“…Applying the collocation method a system of<br />lineal equations is obtained that brings the solution on the boundary, from which the solution in any point of the definition<br />region of the problem can be obtained.…”
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Tensile Strength of Novel Nonabsorbable PTFE (Teflon®) versus Other Suture Materials: An In Vitro Study
Published 2019-01-01“…To compare the in vitro tensile strength of sutures used in implant surgery according to the type of thread and the immersion time in artificial saliva. Methods. For the development of the study, three suture materials were used: polyglactin 910 (PG), black silk (BS), and Teflon (PTFE) 4-0; 150 samples were used, which were divided among each type of suture and then subdivided into five groups of 10 according to the various immersion times (baseline, 3, 7, 14, and 21 days) in artificial saliva. …”
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Influence of thermolysis in the nitrogen medium on physicochemical properties of medical using material based on biogenic hydroxyapatite
Published 2017-02-01“…Physicochemical properties and adsorbtion activity of biogenic hydroxyapatite-based (BHA) osteoapatite material and BHA alloyed by ferromagnetic particles due to using two methods of physicochemical mixing with subsequently low-temperature thermolysis in a nitrogen medium at 500 °C (below the Curie point for magnetite – 572 °C) for 2 h have been studied. …”
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Strength and fatigue analysis of periodic perforated materials using the computational homogenization and ES-FEM approaches
Published 2022-03-01“… This paper presents a computational homogenization shakedown analysis of periodic perforated materials with von Mises matrices. The plastic behaviors of the perforated materials under cyclic macroscopic loads are studied by means of kinematic shakedown theorem and computational homogenization method. …”
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Linguocultural Aspect of Chinese and English Kinship Terms
Published 2024-02-01“…The aim of the study is to provide a linguocultural description of the characteristics and cultural connotations of the modern English and Chinese kinship terms.Materials and Methods. We use the descriptive method, the comparative analysis method, and the contextual analysis method to study English and Chinese terms collected from a variety of scientific and lexicographic sources.Analysis. …”
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954
Internal combustion engine acoustic diagnostics
Published 2024-08-01“…Timely diagnosis is difficult to carry out when working in remote regions, as well as when transporting goods over long distances due to the lack of closely located maintenance centers.Materials and methods. One of the solutions to the above problem is the use of a diagnostic method based on sound parameters. …”
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Features of Electronic Emission from Surface of Dielectric Thin-film Materials with Ion-beam Etching
Published 2014-07-01“…This work presents a series of experimental studies aimed at validating the main theoretical aspects of the ion-electron emission in conditions of ion-beam etching and lookup the possibility of practical realization of the method of operative control processes ion-beam etching different dielectric thin film materials of electronic technics. …”
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A generalized machine learning framework to estimate fatigue life across materials with minimal data
Published 2024-10-01“…An extreme gradient boosting algorithm-based ML framework encompassing Synthetic Minority Over-sampling TEchnique (SMOTE), categorical data encoding, and external loop cross-validation is developed to evaluate the fatigue life across materials. The influence of different training strategies based on materials, input features, encoding method, and data standardization on the model performance is explored. …”
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Design and Construction of an Instrumentation System to Capture the Response of Advanced Materials Impacted by Intense Proton Pulses
Published 2021-01-01“…Such development, together with the test design and run, as well as postmortem examination, spanned over two years, and its fundamental results, mostly in terms of dedicated instrumentation, have been used in all successive HiRadMat experiments as of 2014. This experimental method can also find applications for materials undergoing similarly high strain rates and temperature changes (up to 106 s-1 and 10.000 K, respectively), for example, in the case of experiments involving fast and intense loadings on materials and structures.…”
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Specimen thickness effect on elastic-plastic constraint parameter A
Published 2015-07-01“…Three-dimensional elastic-plastic problems for a power-law hardening material are solved using the finite element method. …”
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Estimating effective conductivity of unidirectional transversely isotropic composites
Published 2013-09-01“…The bounds contain, in addition to the properties and volume proportions of the component materials, three-point correlation parameters describing the micro-geometry of a composite, and are tighter those obtained in [1]. …”
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