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1041
Formation of a Generalized System of Indicators of Regional Economic Security
Published 2024-11-01“…The topic of the study is relevant, since the prevention of crisis situations, the organization of stable functioning of regional economies, the development of territories and the growth of the standard of living of the population necessitate constant monitoring of the economic security of the regions of Russia, which is based on the modeling of a system of indicators, because socioeconomic development is a complex system of interconnections, various components of the economy.Data and methods. …”
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1042
Development and optimization of pearl millet waste biocomposite ceiling tiles: a waste management approach
Published 2025-07-01“…It aims to provide a sustainable alternative to conventional gypsum-based product, maintaining thermal insulation and flexural strength. Taguchi method was employed for experimental design, by varying key parameters such as gypsum, Pearl Millet Seed Covering (PMSC), and ceiling tile thickness. …”
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1043
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1044
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1045
Response surface optimization of co-hydrothermal carbonation parameters of municipal sludge and enteromorpha
Published 2024-04-01“…The results indicated that the response surface models established by Central Composite Design exhibited a good fit (model P<0.05, corresponding lack-of-fit p>0.05), with minimal deviation between predicted values and actual values. …”
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1046
Photocatalytic degradation of methylene blue and tetracycline under visible light by fabricated carbon quantum dot decorated TiO2 nanotubes
Published 2025-12-01“…X-ray diffraction (XRD) results suggest that the decoration of CQDs onto TiO2 TNTs significantly hinders crystalline growth. The composites show excellent photocatalytic activity against methylene blue (MB) and tetracycline (TC) as model pollutants. …”
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1047
A Generalized Shape Function for Vibration Suppression Analysis of Acoustic Black Hole Beams Based on Fractional Calculus Theory
Published 2025-03-01“…Since fractional-order constitutive models can more accurately capture the properties of viscoelastic materials, a fractional dynamic model of an ABH structure covered with viscoelastic film is established based on the fractional Kelvin–Voigt constitutive equation and the mechanical analysis of composite structures. …”
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1048
Synergy enhancement in low-frequency sound absorption by a nanofibre coating for the microperforated panels
Published 2024-12-01“…Because of the synergy enhancement effect, the performance of the absorber is much exceed the expect of the transfer matrix method (TMM) model. A very thin coating of nanofibres enables a significant increase in MPP performance. …”
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1049
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1050
Wet granulation method in the technology of 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F]xanthine tablets, which increases the detoxifying function of the liver
Published 2025-06-01“…The crushing strength and disintegration of the tablets analyzed.Aim. Development of a composition for wet granulation of 6,8-dimethyl-2-piperidinomethyl-2,3-dihydrothiazolo[2,3-F]xanthine to obtain granules with optimal technological parameters to obtain high-quality tablets that pass tests according to the State Pharmacopoeia of the Russian Federation.Materials and methods. …”
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1051
Structural strength optimization design of ultra-high-pressure and ultra-wear-resistant pneumatic ball valve opened and closed at large explosion instantaneously using finite eleme...
Published 2025-07-01“…Abstract Aiming at the problem that large-scale ultra-high-pressure pneumatic ball valves opened and closed at large explosion instantaneously are prone to fatigue failure due to dynamic stress concentration under transient impact loads, this study proposes a multi-physics field coupling structural strength optimization design method based on finite element method. A transient dynamic model is constructed through an explicit dynamics algorithm to simulate the dynamic response under high-frequency impact loads during the blasting opening and closing process. …”
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1052
Radial Vibration Characteristics of Piezoelectric Ceramic Composite Ultrasonic Transducer
Published 2020-01-01“…The piezoelectric ceramic composite ultrasonic transducer is simplified as a mechanical model of a composite thick wall tube composed of a piezoelectric ceramic tube and a metal prestressed tube. …”
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1053
PREDICTION OF LOAD LIMIT OF BI-MODULUS COMPOSITES LAMINATED STRUCTURE
Published 2019-01-01“…Based on three dimensional continuum damage mechanics,an improved progressive damage analysis method was proposed for bi-modulus fiber-reinforced polymer( BFRP) composites laminated structure. …”
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1054
Study of stability loss of cylindrical shell made of composite material
Published 2021-07-01“…The main properties of composite materials and a method of manufacturing a cylindrical shell structure from a composite material are considered. …”
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1055
Analysis of the Efficiency of Composite Supports in Electric Networks of the Republic of Belarus
Published 2019-02-01“…The best option of the use of composite supports along with wood ones is the following ratio: four composite supports to one wooden one (method of construction “4/1”). …”
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1056
Artificial neural network and response surface method-based optimization of unsteady natural convective heat transfer of Fe3O4-Engine Oil nanofluid in a trapezoidal enclosure
Published 2025-05-01“…The numerical results are used to train and evaluate the performance of both RSM and ANN models. A central composite design within the RSM framework is applied for statistical experimental design, exploring combinations of input parameter values. …”
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1057
Two-stage multiple imputation with a longitudinal composite variable
Published 2025-05-01“…Methods We evaluated the performance of two-stage MI in a novel context, imputing a composite variable constructed from several continuous and binary components in the longitudinal setting while handling missing data due to MAR and missing not at random (MNAR). …”
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1058
Chaotic Vibration Prediction of a Laminated Composite Cantilever Beam
Published 2025-06-01“…The deep learning method of the recurrent neural network (RNN) is applied to predict the chaotic vibrations of a laminated composite cantilever beam. …”
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1059
Numerical Analysis of a DMA Epoxy-Carbon Composite Study
Published 2018-12-01“…The results of numerical simulations performed for Dynamic Mechanical Analysis (DMA) measurements of thermal and mechanical (or thermomechanical) properties performed on a model composite structure are presented herein. The simulated elastic response of an epoxy-carbon fibre composite specimen was analysed for a case by which the model specimen was subjected to three-point bending with a free support. …”
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1060
FAILURE ANALYSIS OF COMPOSITE CURVED BEAM UNDER BENDING LOAD
Published 2018-01-01“…In this paper,the Solid Composite finite element model is used to calculate the inter-laminar tension and shear stress of the composite curved beam under bending load,and then,the failure strength is predicted. …”
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