Showing 6,521 - 6,540 results of 6,894 for search '"Nonlinearity"', query time: 0.05s Refine Results
  1. 6521

    Reaction Kinetics of Cinnamaldehyde Hydrogenation over Pt/SiO2: Comparison between Bulk and Intraparticle Diffusion Models by Ali Al-Shathr, Zaidoon M. Shakor, Bashir Y. Al-Zaidi, Hasan Sh. Majdi, Adnan A. AbdulRazak, Safa Aal-Kaeb, Adel A. Shohib, James McGregor

    Published 2022-01-01
    “…The kinetic parameters were obtained by applying a nonlinear dynamic optimization algorithm. Nevertheless, the comparison between the methodology of the present model and these five models indicated that the non-competitive mechanism is more acceptable and identical with the single-site Langmuir–Hinshelwood kinetic model including mass transfer effects and it mimicked the reactant behavior better than the other models. …”
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    Article
  2. 6522

    Conductance Model for Extreme Events: Impact of Auroral Conductance on Space Weather Forecasts by Agnit Mukhopadhyay, Daniel T. Welling, Michael W. Liemohn, Aaron J. Ridley, Shibaji Chakraborty, Brian J. Anderson

    Published 2020-11-01
    “…CMEE has been developed using nonlinear regression over a year's worth of 1‐min resolution output from assimilative maps, specifically including times of extreme driving of the solar wind‐magnetosphere‐ionosphere system. …”
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    Article
  3. 6523

    Harnessing the Influence of Pressure and Nutrients on Biological CO<sub>2</sub> Methanation Using Response Surface Methodology and Artificial Neural Network—Genetic Algorithm Appro... by Alexandros Chatzis, Konstantinos N. Kontogiannopoulos, Nikolaos Dimitrakakis, Anastasios Zouboulis, Panagiotis G. Kougias

    Published 2025-01-01
    “…RSM identified optimal ranges for trace elements and pressure, while ANN-GA demonstrated superior predictive accuracy, capturing nonlinear relationships with a high R² (>0.99) and minimal prediction errors. …”
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    Article
  4. 6524

    Effective Removal of Malachite Green from Aqueous Solutions Using Magnetic Nanocomposite: Synthesis, Characterization, and Equilibrium Study by Ali Q. Alorabi

    Published 2021-01-01
    “…Different parameters, such as pH of the solution (3–8), adsorbent dosage (10–100 mg), temperature (25–45°C), contact time (5-240 min), and initial MG concentrations (20–350 mg/L), for the elimination of the MG dye using Fe3O4@AJPL were optimized and found to be 7, 50 mg, 45°C, 120 min, and 150 mg/L, respectively. The nonlinear isotherm and kinetic studies exhibited a better fitting to second-order kinetic and Langmuir isotherm models, with a maximum monolayer adsorption capacity of 318.3 mg/g at 45°C, which was highly superior to the previously reported magnetic nanocomposite adsorbents. …”
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    Article
  5. 6525

    Projected Thermally Driven Elderly Mortality for Beijing Under Greenhouse Gas and Stratospheric Aerosol Geoengineering Scenarios by Jun Wang, Liyun Zhao, John C. Moore

    Published 2024-07-01
    “…Temperature‐related mortality risk were calculated using a distributed lag nonlinear model (DLNM) of the elderly (over 65s) under the dynamically downscaled moderate (RCP4.5) and extreme (RCP8.5) greenhouse gas, and the G4 SAI scenarios. …”
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    Article
  6. 6526

    Acoustic Emission and Failure Modes for Coal-Rock Structure under Different Loading Rates by Ning Wang, Yingqian Xu, Dengyuan Zhu, Nan Wang, Benfu Yu

    Published 2018-01-01
    “…The following conclusions are drawn: (1) when loading rate was relatively low, plastic deformation of coal mass fully developed, while surface cracks of coal mass was not apparent and slip along the transfixion crack occurred in the postpeak stage; (2) with the increase in loading rate, surface tensile cracks developed into splitting cracks at the end of the prepeak stage and throughout the postpeak stage, and brittle failure finally happened due to the release of nonlinear step-shaped energy or one-time strain energy release of upper rock mass, resulting in the damage of internal bearing structure and weakening of bearing capacity; (3) the deformation and failure process of combined samples showed obvious phases, and corresponding AE energy release rate could be divided into periodic linear growth and transient growth, while the cumulative energy of AE events has multiple peak points and transient growth with the increase of loading rate; (4) it was demonstrated that two distinct frequency bands existed in AE events, which were about 50 kHz and 150 kHz, and the distribution of AE events near 50 kHz was larger and stronger, representing the main frequency range of cracks in coal mass. …”
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  7. 6527

    Effects of heat generation and absorption on thermal radiative MHD flow of chemically reacting Casson nanofluids over a wedge by S. Venkateswarlu, B. Hari Babu, M. Veera Krishna

    Published 2025-01-01
    “…The basic governing partial differential equations are converting into nonlinear ordinary differential equations with employing suitable similarity transformations. …”
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  8. 6528
  9. 6529

    Cardiometabolic index and mortality risks: elevated cancer and reduced cardiovascular mortality risk in a large cohort by Junjie Wang, Li Xiao, Zhou Li

    Published 2024-12-01
    “…Restricted cubic spline analyses and stratified analyses were conducted to investigate potential nonlinear effects and interactions. Results The decreased participants exhibited considerably higher CMI than the alive’s. …”
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  10. 6530

    Improved Continuous Wavelet Transform for Modal Parameter Identification of Long-Span Bridges by Mingjin Zhang, Xu Huang, Yongle Li, Hao Sun, Jingyu Zhang, Bin Huang

    Published 2020-01-01
    “…In recent years, the wavelet method has been applied more frequently in parameter identification of linear and nonlinear systems. In this article, based on wavelet ridges and wavelet skeleton, the improved modal parameter identification method was studied. …”
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  11. 6531

    Numerical Evaluation of the Opening Effects on the Reinforced Concrete Slab Structural Performance by Meysam Aminitabar, Omar Kanaani, Amir Reza Eskenati

    Published 2021-01-01
    “…In building this three-dimensional model, it is attempted to accurately model all nonlinear properties of steel and concrete materials as well as the interactions between them. …”
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    Article
  12. 6532

    Clinical and Histopathological Characteristics of Acquired Inflammatory Blaschko-Linear Disorders by Nikhil Mehta, Binod K. Khaitan, M. Ramam, Neetu Bhari, Gomathy Sethuraman, Manoj K. Singh

    Published 2025-01-01
    “…Limitations: Limitations include cross-sectional design and lack of controls with generalized nonlinear diseases. Conclusions: Acquired inflammatory Blaschko-linear disorders show distinct characteristics like involvement of multiple lines and sites, directional progression, and atrophic variants. …”
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  13. 6533

    Association between red blood cell distribution width and mortality in severe osteomyelitis patients by Yunlong Liu, Yan Zheng, Sheng Ding

    Published 2025-01-01
    “…Restricted Cubic Spline (RCS) was used to detect the nonlinear relationship between RDW and mortality rate. …”
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    Article
  14. 6534
  15. 6535

    Heat Transfer Management of Thermal and Electronics Systems using Convective-Radiative Porous Fins with Thermal Contact Resistance and Diabatic Tip by Joy Nneka Ojuro, Gbeminiyi Musibau Sobamowo, Antonio Marcos de Oliveira Siqueira

    Published 2024-07-01
    “…However, the present article explores the significances of thermal contact resistance and diabatic tip on the transient thermal response of straight fin with temperature-dependent thermal conductivity and magnetic field under radiative-convective conditions. The nonlinear model is analyzed numerically using generalized Integral Transform Techniques and the numerical results are verified by the exact solution for the linear thermal model. …”
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  16. 6536
  17. 6537
  18. 6538

    Optimal Lane Allocation Strategy in Toll Stations for Mixed Human-Driven and Autonomous Vehicles by Zuoyu Chai, Tanghong Ran, Min Xu

    Published 2025-01-01
    “…To fully leverage the congestion reduction potential of ETC, this paper addresses the problem of ETC lane allocation at toll stations under heterogeneous traffic flows, modeling it as a mixed-integer nonlinear bilevel programming problem (MINLBP). The objective is to minimize total toll station travel time by optimizing the number of ETC lanes at station entrances and exits while considering ETC-HVs’ lane selection behavior based on the user equilibrium principle. …”
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  19. 6539

    Space-Time Evolution Laws of Zonal Disintegration in Deep Underground Caves Based on Coordination Deformation between the Bolt Body and Surrounding Rock by Yuan-xiang Yu, Zhi-xun Xie, Bao-ping Chen

    Published 2021-01-01
    “…Because the divisional rupture law in engineering practice is closely related to the force characteristics of the bolt body, this paper analyzed stress distribution rules of the same bolt body at different times and that of different bolt bodies at the same time in the case of zonal disintegration based on coordination deformation between the bolt body and surrounding rock. The nonlinear rheological mechanics model of rock mass on the elastic-plastic interface under the maximum support pressure was established. …”
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  20. 6540

    Development Characteristics and Sensitivity Analysis of Expansive Soil Slope by Pengfei Jiang, Yuanyuan Kong, Zhenyu Song, Ruixin Zhao, Jiewei Zhan, Xuhui Lin

    Published 2022-01-01
    “…The undisturbed soil had typical nonlinear rheological property; The deformation rate of reconstituted was bigger; When the load was 50 kPa and 200 kPa, an expansion phenomena occurred in the sliding zone, which indicated that microstructure could influence the deformation. …”
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