Showing 201 - 220 results of 613 for search 'diffusion general model', query time: 0.14s Refine Results
  1. 201

    Investigation of the Boundary Value Problem for an Extended System of Stationary Nernst–Planck–Poisson Equations in the Diffusion Layer by Evgenia Kirillova, Natalia Chubyr, Roman Nazarov, Anna Kovalenko, Makhamet Urtenov

    Published 2025-04-01
    “…This article investigates the boundary value problem for an extended stationary system of Nernst–Planck–Poisson equations, corresponding to a mathematical model of the influence of changes in the equilibrium coefficient on the transport of ions of a binary salt in the diffusion layer. …”
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  2. 202
  3. 203

    The stability of double-diffusive convection in an inclined porous channel saturated with nanofluid and influenced by a magnetic field by D. Srinivasacharya, Nidhi Humnekar

    Published 2025-03-01
    “…The stability of nanofluid flow in a porous inclined channel with double diffusion and a magnetic field is investigated. The Darcy-Brinkman model is used to characterize fluid flow dynamics in porous medium. …”
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  4. 204

    Inclusion of Nonresonant Effects Into Quasi‐Linear Diffusion Rates for Electron Scattering by Electromagnetic Ion Cyclotron Waves by Xiaofei Shi, Xin An, Anton Artemyev, Xiao‐Jia Zhang, Didier Mourenas, Vassilis Angelopoulos

    Published 2024-07-01
    “…We use the Green's function approach to generalize EMIC diffusion rates foregoing the need to modify existing codes or recompute empirical wave databases. …”
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  5. 205

    An accurate collocation method for distributed order time fractional nonlinear diffusion wave equation with error analysis by M. Taghipour, H. Aminikhah

    Published 2025-05-01
    “…The distributed-order fractional nonlinear diffusion-wave problem is a mathematical model that combines the concepts of fractional calculus and nonlinear diffusion-wave equations. …”
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  6. 206
  7. 207

    A Fourier Series Technique for Approximate Solutions of Modified Anomalous Time-Fractional Sub-Diffusion Equations by Samad Kheybari, Farzaneh Alizadeh, Mohammad Taghi Darvishi, Kamyar Hosseini

    Published 2024-12-01
    “…This article presents an innovative approximating technique for addressing modified anomalous time-fractional sub-diffusion equations (MAFSDEs) of the Caputo type. These equations generalize classical diffusion equations, which involve fractional derivatives with respect to time, capturing the non-local and history-dependent behavior typical in sub-diffusion processes. …”
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  8. 208
  9. 209

    QSI and DTI of Inherited White Matter Disorders in Rat Spinal Cord: Early Detection and Comparison with Quantitative Electron Microscopy Findings by Maysa Teixeira Resende, Benjamin K. August, Daniel Z. Radecki, Madelyn Reilly, Abigail Komro, John Svaren, Debbie Anaby, Ian D. Duncan, Yoram Cohen

    Published 2025-03-01
    “…<b>Methods</b>: q-Space diffusion MR imaging (QSI) and diffusion tensor MR imaging (DTI) with the same resolution and timing parameters were used to study the spinal cords (SCs) of two myelin mutants that are experimental models of WM diseases of different severity, namely the 28-day-old <i>taiep</i> and Long–Evans Shaker <i>(les</i>) rats. …”
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  10. 210

    Normative structural connectome constrains spreading transient brain activity in generalized epilepsy by Jie Xia, Siqi Yang, Jiao Li, Yao Meng, Jinpeng Niu, Huafu Chen, Zhiqiang Zhang, Wei Liao

    Published 2025-05-01
    “…Furthermore, a network-based diffusion model was utilized to simulate the spread of pathology and identify potential disease epicenters. …”
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  11. 211

    On the Transient Atomic/Heat Diffusion in Cylinders and Spheres with Phase Change: A Method to Derive Closed-Form Solutions by I. L. Ferreira, A. Garcia, A. L. S. Moreira

    Published 2021-01-01
    “…The analytical model is proved to be general, as far as, a semi-infinite solution for diffusion problems with phase change exists in the form of the error function, which enables exact closed-form analytical solutions to be derived, by updating the root at each radial position the moving boundary interface.…”
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  14. 214

    Square-Based Division Scheme for Image Encryption Using Generalized Fibonacci Matrices by Panagiotis Oikonomou, George K. Kranas, Maria Sapounaki, Georgios Spathoulas, Aikaterini Aretaki, Athanasios Kakarountas, Maria Adam

    Published 2025-05-01
    “…Encryption keys are generated using the direct sum of generalized Fibonacci matrices, ensuring key matrix invertibility and strong diffusion properties and security levels. …”
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  15. 215

    An analysis of the relationship of triglyceride glucose index with diffuse large B-cell lymphoma prognosis: a retrospective study by QingQing Luo, Zhixiang Lei, Haizhou Miao, Ting Huang, Li Yu

    Published 2025-04-01
    “…ObjectiveDiffuse large B-cell lymphoma (DLBCL) as among the most common lymphomas is associated with insulin resistance (IR). …”
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  16. 216

    Changes in Parahippocampal White Matter Integrity in Amnestic Mild Cognitive Impairment: A Diffusion Tensor Imaging Study by E. J. Rogalski, C. M. Murphy, L. deToledo-Morrell, R. C. Shah, M. E. Moseley, R. Bammer, G. T. Stebbins

    Published 2009-01-01
    “…For this purpose, (1) volumetry; (2) diffusion tensor imaging (DTI) derived measures of mean diffusivity (MD) and fractional anisotropy (FA); and (3) tractography were used. …”
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  17. 217

    Fundamental solution of the time-space bi-fractional diffusion equation with a kinetic source term for anomalous transport by Anis Allagui, Georgii Paradezhenko, Anastasiia Pervishko, Dmitry Yudin, Hachemi Benaoum

    Published 2024-06-01
    “…The equation is a generalization of the integer-order model $${\partial _{{t}} {\rho (x,t)}} = {\partial ^2_{{x}} {\rho (x,t)}} - { \rho (x,t)}$$ ∂ t ρ ( x , t ) = ∂ x 2 ρ ( x , t ) - ρ ( x , t ) (also known as the Debye–Falkenhagen equation) by replacing the first-order time derivative with the Caputo fractional derivative of order $$0<\alpha < 1$$ 0 < α < 1 , and the second-order space derivative with the Riesz-Feller fractional derivative of order $$0< \beta <2$$ 0 < β < 2 . …”
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  18. 218

    Constrained Heat Kernel Graph Diffusion Convolution: A High-Dimensional Statistical Approximation via Information Theory by Zhuo-Chen He

    Published 2025-01-01
    “…Among these networks, diffusion-based approaches, such as generalized graph diffusion convolution, have extended conventional immediate neighborhood aggregation function to a diffusion process based on Newton&#x2019;s law of cooling. …”
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  19. 219

    Methodology for Estimating Communication Reliability in Shortwave Radio-Frequency Transmission Channels with Rician Fading Given Ionospheric Diffusivity by V. P. Pashintsev, D. A. Belokon, S. A. Koval, A. D. Skorik

    Published 2022-12-01
    “…There exists a technique for estimating the dependence of communication reliability in a shortwave radio-frequency transmission channel (SWRC) with a single discrete beam and diffuse wave scattering across small-scale ionospheric inhomogeneities on the selected operating frequency taking into account the given signal-to-noise ratio and ionospheric diffusivity. …”
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  20. 220

    Hormonal Influences on ADC Values in Breast Tissues: A Scoping Review of DWI in Pre- and Post-menopausal Women [version 3; peer review: 2 approved] by Neil Barnes Abraham, Abhimanyu Pradhan, Suresh Sukumar, Sneha Ravichandran, Winniecia Dkhar, Rajagopal Kadavigere

    Published 2025-01-01
    “…Background Breast cancer remains a significant global health concern, with early diagnosis and risk factor identification crucial for improving outcomes. Diffusion-Weighted Imaging (DWI) and Apparent Diffusion Coefficient (ADC) measurements have emerged as promising tools in breast cancer diagnostics. …”
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