Showing 1,281 - 1,300 results of 4,621 for search 'diffusion (processes OR process)', query time: 0.11s Refine Results
  1. 1281

    Dynamics of HLB Transmission: Integrating Saturated Removal and Vector Bias in Spatial/Non-Spatial Models by Yang Liu, Yirong Gao, Fumin Zhang, Shujing Gao

    Published 2025-06-01
    “…Notably, vector bias significantly enhances the likelihood of forward bifurcation, and the delay in the removal of diseased trees increases the risk of backward bifurcation. However, reaction–diffusion processes do not alter the stability of the system’s equilibria, and the spatial system lacks complex dynamic properties. …”
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  2. 1282

    Income per-capita across-countries: stories of catching-up, stagnation, and laggardness by Juan Ricardo Perilla Jiménez

    Published 2024-12-01
    “…The convergence/divergence debate and plausible explanations to the process of catching-up remain highly controversial research areas in growth economics. …”
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  3. 1283
  4. 1284

    Surface damage in tungsten induced by high heat flux helium irradiation at high temperatures across melting point by Hanqing Wang, Yue Yuan, Baoqin Fu, H. Greuner, B. Böswirth, Mengchong Ren, Yufei Nie, Peng Zhang, Xingzhong Cao, Guang-Hong Lu

    Published 2024-01-01
    “…Accordingly, we proposed a model for pinhole growth under high-temperature He irradiation based on thermal activation diffusion of He. The calculated activation energy for He diffusion in this process was found to be 0.51 eV, which is considerably higher than the results obtained from previous simulations (0.021–0.157 eV) (Zhou et al 2010 Nucl. …”
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  5. 1285

    Primary analysis of the trajektory of floating particles in compound channel by Marcin Krukowski, Piotr Siwicki

    Published 2020-02-01
    “…On the model, the study of particle motion was carried out using the digital image recording technique with the analysis of the motion of the dosed indicator (solid particles), (PIV) (Particle Image Velocimetry), allowing to determine the basic parameters characterizing the process of their transport in the subsurface layer of water in the channel. …”
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  6. 1286

    Analysis of AC Response and Charge Transport Mechanisms in Double-Layer and Triple-Layer Solar Cell Architectures by Hmoud Al Dmour

    Published 2025-06-01
    “…At zero bias, while there is evidence of a relaxation process in TLSCs, this is not as clear for DLSCs. …”
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  7. 1287

    The role of white matter variability in TMS neuromodulatory effects by Mar Martín-Signes, Pablo Rodríguez-San Esteban, Cristina Narganes-Pineda, Alfonso Caracuel, José Luís Mata, Elisa Martín-Arévalo, Ana B. Chica

    Published 2024-11-01
    “…Structured Abstract: Background: Transcranial Magnetic Stimulation (TMS) is a widely used tool to explore the causal role of focal brain regions in cognitive processing. TMS effects over attentional processes are consistent and replicable, while at the same time subjected to individual variability. …”
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  8. 1288
  9. 1289

    Diversified Image Inpainting With Transformers and Denoising Iterative Refinement by Shuzhen Xu, Wenlong Xiang, Cuicui Lv, Shuo Wang, Guanhua Liu

    Published 2024-01-01
    “…Firstly, referring to the discretized pixel set, a transformer information association model is designed to sample from the granularity of pixel values, so as to obtain low-resolution results with diverse appearance. Then, a denoising diffusion model is used to reconstruct the high-resolution image, which is a conditional and iterative refinement process. …”
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  10. 1290

    Fast solid-phase bonding based on indium film-modified copper crystal structure by Xiao Jin, Luo Jia, Zhou Qi-xing, Zhang hao, Jun-hui Liu, Huang Xi-feng

    Published 2025-05-01
    “…Abstract The special shape of Cu/In layer and ultrasonic vibration are used to realize fast bonding at room temperature, thus solving the problems of high thermal stress and signal delay caused by high temperature in the traditional reflow soldering process. The indium film-modified copper crystal microlayer substrates are used as bonding couples, and ultrasonic vibration and pressure are applied to the bonding contact area to realize the rapid solid-phase bonding of two copper substrates. …”
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  11. 1291

    Microstructural and mechanical properties of ultrasonically assisted titanium-steel dissimilar metal fusion welds by Xiaohu Hao, Xinlong Wei, Shuhua Li, Zeqin Cui, Dejun Yan, Weiguo Li

    Published 2025-03-01
    “…The solidification behavior of the titanium-steel molten weld interface and the morphological distribution of the brittle phase were controlled by introducing a low-power ultrasonic energy field to assist the welding process. Results indicated that the low-power ultrasonic energy field enhanced the diffusion of joint elements, leading to biased aggregation of brittle phases on the titanium and steel sides, thereby reducing the joint's mechanical properties. …”
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  12. 1292

    The Influence of Dendrite Growth Direction on the Oxidation Behavior of Single-Crystal Superalloy DD10 by WANG Zelei, HU Yebing, CAO Tieshan, CHENG Congqian, ZHAO Jie

    Published 2024-11-01
    “…For investigating the evolution process of surface oxide film on nickel based single crystal superalloys perpendicular and parallel to the direction of primary dendrite growth,the oxidation behavior of nickel based single crystal superalloys DD10 at 1 050 ℃was studied by the method of continuous weight increase.The surface and oxide film morphology,element distribution,etc.of the alloy perpendicular and parallel to the primary dendrite growth direction were analyzed by scanning electron microscopy (SEM),energy dispersive spectroscopy (EDS),X-ray diffraction (XRD) and electron probe microanalysis (EPMA).Results showed that the growth direction of dendrites had no effect on the oxidation kinetics and oxide film structure of DD10 alloy.The oxidation kinetics of the alloy in both vertical and parallel planes exhibited a staged phenomenon: The first stage followed the cubic weight gain law,while the second stage followed the asymptotic horizontal line law.Furthermore,the oxide film structure was divided into three layers,with the outer layer composed of columnar Nix(Co)1-xO,the middle layer composed of complex spinel,and the inner layer composed of continuous Al2O3.However,the growth direction of dendrite had a significant effect on the rate of oxidation weight gain of the alloy.The oxidation rate constant of the vertical plane of the alloy was k1 =5.96×10-3mg2/(cm4·s),and the oxidation rate constant of the parallel plane was k2 =6.24×10-3 mg2/(cm4·s).Meanwhile,the initial growth rate of the oxide film on the parallel surface of the alloy was greater than that on the vertical surface,which mainly resulted from that the presence of more γ - γ'phase interfaces parallel to the growth direction of the dendrites could provide a large number of non-uniform nucleation sites and more short-circuit diffusion paths for the nucleation of oxides,and thereby cause higher oxidation rates in the first stage for parallel growth directions.With the increase of oxidation time,the inner layers of different dendritic directions all formed a continuous dense Al2O3,which effectively hindered the outward diffusion of metal cations,and reduced the difference in oxidation rates.…”
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  13. 1293
  14. 1294

    Radio frequency gradient enhanced diffusion-edited semi-solid state NMR spectroscopy for detailed structural characterization of chemically modified hyaluronic acid hydrogels by Peyman Sakhaii, Bojan Bohorc, Thomas Olpp, Mandy Mohnicke, Joerg Rieke-Zapp, Pradeep K. Dhal

    Published 2024-11-01
    “…To overcome challenges associated with obtaining high-resolution NMR spectra of crosslinked hydrogels (such as line broadening and overlapping of signals of the hydrogel with those of residual reagents and solvents used during multi-step reaction processes on insoluble polymer matrices), we devised a radio frequency mediated diffusion-edited semi solid-state NMR technique. …”
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  15. 1295
  16. 1296

    Global and tract-specific differences between younger and older adults in DTI measures of white matter integrity by Stephanie Matijevic, Lee Ryan, Lee Ryan

    Published 2025-05-01
    “…The present study compared DTI measures in 36 white matter tracts between 71 younger adults (ages 18–37) and 129 older adults (ages 52–82), to (1) determine whether shared variance across white matter tracts increases with age, and (2) examine tract-specific variability in age-related alterations to white matter integrity. Diffusion weighted images were processed using probabilistic tractography in order to reconstruct callosal, association, and radiation tracts, from which average measures of fractional anisotropy (FA), mean diffusivity (MD), radial diffusivity (RD) and axial diffusivity (AD) were derived. …”
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  17. 1297

    The extended- $$\left( \frac{G'}{G}\right)$$ -expansion method and new exact solutions for the conformable space-time fractional diffusive predator-prey system by Jie Wu, Zhao Li, Hao Tian, Zheng Yang

    Published 2025-05-01
    “…By incorporating negative exponents into the solution process, the study uncovers a broader set of exact solutions, providing deeper insights into the system’s behavior. …”
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  18. 1298
  19. 1299

    Feasibility Study of Enterprise Resources Planning (ERP) Systems’ Implementation (Empirical Evidence: National Iranian Oil Petroleum Diffusion Cooperation (NIOPDC) – Sari Zone) by Hassan Ali Aghajani, Hossein Samadi, Mohammad khanzadeh, Hamzeh Samadi

    Published 2014-06-01
    “…Other findings signify that all variables are in an undesirable status, except for investment, skills, and process variables.…”
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  20. 1300

    MCP-1-CCR2-M2 macrophages axis contributes to diffuse large B-cell lymphoma progression and inhibits antitumor immune response by Zhao-Feng Wen, Qi-Tang Huang, Yang-Yang Wang, Feng-Ya Nan, Zhi-Min Zhai, Yan-Li Li

    Published 2025-08-01
    “…Abstract Diffuse large B-cell lymphoma (DLBCL) is an aggressive hematological malignancy with restricted effective therapy choices. …”
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