Results 31 to 40 of about 34,631,452 (311)
Cyclic variations of quality characteristics in river water in an industrial region
Water Science and Technology, 2021 River water in industrial regions is a dynamic medium defined by random variables that cannot be described by linear equations. However, some water quality characteristics, e.g., pollutant concentrations, which look chaotically distributed are largely ...
O. M. Rozental, D. A. Tambieva
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Mathematical model of the photoplethysmogram for testing methods of biological signals analysis [PDF]
Известия высших учебных заведений: Прикладная нелинейная динамика, 2023 The purpose of this study was to develop a mathematical model of the photoplethysmogram, which can be used to test methods that introduce the instantaneous phases of the modulating signals.
Vakhlaeva, Anna Mikhailovna +4 more
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Optics Express, 2017 Aimed at the low accuracy problem of shear strain measurement in Moiré methods, a two-dimensional (2D) Moiré phase analysis method is proposed for full-field deformation measurement with high accuracy. A grid image is first processed by the spatial phase-
Qinghua Wang +4 more
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The Identity and Mineral Composition of Natural, Plant-Derived and Artificial Sweeteners
Molecules, 2023 The qualitative X-ray phase analysis of natural and artificial food sweeteners was applied to trace the authenticity of such food additives. The mineral composition of different sweeteners commonly added to foods was studied to estimate their mineral ...
Anna Leśniewicz +3 more
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Metals, 2021 High-strength steel is widely used in hot forging products for application to the oil and gas industry because it has good mechanical properties under severe environment.
Moonseok Kang +9 more
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Circulation: Arrhythmia and Electrophysiology, 2018 Background Several recent studies suggest rotors detected by phase mapping may act as main drivers of persistent atrial fibrillation. However, the electrophysiological nature of detected rotors remains unclear.
P. Podziemski +8 more
semanticscholar +1 more source
The Monitoring of Macroeconomic Indicators Based on Studying their Non-Stationary Dynamics in the Context of Implementing the Strategy of Sustainable Socio-Economic Development of the State [PDF]
Problemi Ekonomiki, 2016 The article suggests the application of modern tools for monitoring macroeconomic indicators and studying their non-stationary dynamics in the context of implementing the strategy of sustainable socio-economic development of the state on the basis of ...
Bril Mykhailo S.
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Thermal Decomposition and Kinetics of Pentlandite-Bearing Ore Oxidation in the Air Atmosphere
Metals, 2021 The roasting of sulfide ores and concentrates is one of the most important steps in pyrometallurgical metal production from primary raw materials, due to the necessity of excess sulfur removal, present in the virgin material.
Kristina Božinović +6 more
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Phase synchronization analysis by assessment of the phase difference gradient
Chaos: An Interdisciplinary Journal of Nonlinear Science, 2009 Phase synchronization is an important phenomenon of nonlinear dynamics and has recently received much scientific attention. In this work a method for identifying phase synchronization epochs is described which focuses on estimating the gradient of segments of the generalized phase differences between phase slips in an experimental time series. In phase
Vejmelka, M. (Martin) +2 more
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BuildingsAbundant tuff mineral resources offer a promising solution to the shortage of fly ash (FA) and silica fume (SF) resources as emerging supplementary cementitious materials.
Tianqi Li +5 more
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