Showing 2,541 - 2,560 results of 5,125 for search '"diffusion"', query time: 0.06s Refine Results
  1. 2541

    Kinetic simulation of uranium migration in granite fissure media of beishan, gansu, China: A case study based on the Laplace transform and inverse transform methods by Xianzhe Duan, Cong Du, Nan Li, Jiaxin Duan, Zhenping Tang

    Published 2025-02-01
    “…The following insights were obtained: (1) After 100,000 years, U-238 has a very limited diffusion depth in the matrix domain, with a diffusion range of only a few tens of millimeters, whereas it migrates relatively quickly in the fissure domain, with a maximum migration distance of about 1500 m. (2) Under the same migration time and distance, the relative concentration of nuclide U-238 in the fissure domain increases with larger gap width, hydraulic gradient, and diffusible area ratio, but decreases with higher rock porosity. (3) In the same time range, the rock masses with larger gap widths, hydraulic gradients, and diffusible area ratios have larger migration ranges, while those with higher porosities have smaller migration ranges. (4) While selecting a site for diposal of HLWs, it is recommended to choose rock masses in the granite area of Beishan with no fissures or few fissures; additionally, areas with smaller fissure widths, hydraulic gradients, and diffusible area ratios but higher rock porosity should be prioritized. …”
    Get full text
    Article
  2. 2542

    Classification of Cigarette Types Using Computer Vision: An Analysis of Smoke Aggregation Features by Shishuan Guan, Lei Jiao, Zengyu Wang, Xiaofei Ji, Hongwei Zheng, Cunfeng Yu, Hongtao Li, Liwen Zheng, Shuaishuai Sun, Qiang Sun, Jun Li, Guangwei Jiang, Kezhi Wu, Erge Lin, Xinlong Zhang

    Published 2025-01-01
    “…Based on this data set, we applied the traditional vision algorithm to extract the diffusion width, sedimentation concentration and diffusion distance of smoke, and used the KNN model for training, and initially reached an accuracy of 69.8%. …”
    Get full text
    Article
  3. 2543

    Ionospheric Response to the 24–27 February 2023 Solar Flare and Geomagnetic Storms Over the European Region Using a Machine Learning–Based Tomographic Technique by Ting Li, Dunyong Zheng, Changyong He, Fei Ye, Pengfei Yuan, Yibin Yao, Mengguang Liao, Jian Xie

    Published 2025-01-01
    “…These combined effects offset the alternating positive and negative structures induced by ambipolar diffusion, becoming the main cause of electron density variations during ionospheric storms.…”
    Get full text
    Article
  4. 2544

    Efficient continuous SF6/N2 separation using low-cost and robust metal-organic frameworks composites by Jinjian Li, Yuting Chen, Tian Ke, Yuanyuan Jin, Rongrong Fan, Guihong Xu, Liu Yang, Zhiguo Zhang, Zongbi Bao, Qilong Ren, Qiwei Yang

    Published 2025-01-01
    “…Record-high selectivities (> 2×104) and SF6 dynamic capacities (~ 2.7 mmol/g) were achieved, while exceptional SF6 productivities (~ 58.7 L/kg), yields (~ 96.8%), and recyclability (~ 1000 cycles) were demonstrated in fixed-bed adsorption-desorption experiments under mild regeneration conditions. 2D solid-state NMR/in-situ FTIR, DFT-D binding/diffusion simulation analyses revealed the multi-site binding mode and the ultra-fast diffusion of SF6 within the channels. …”
    Get full text
    Article
  5. 2545
  6. 2546

    An MRI radiomics model for predicting a prostate-specific antigen response following abiraterone treatment in patients with metastatic castration-resistant prostate cancer by Yi Wu, Xiang Liu, Shaoxian Chen, Fen Fang, Feng Shi, Yuwei Xia, Zehong Yang, Daiying Lin

    Published 2025-01-01
    “…By extracting features from biparametric MRI, including T2-weighted imaging(T2WI), diffusion-weighted imaging(DWI), and apparent diffusion coefficient(ADC) maps, radiomics features from the training dataset were selected using least absolute shrinkage and selection operator(LASSO) regression. …”
    Get full text
    Article
  7. 2547

    Antioxidant and antibacterial activity of red seaweed Kappaphycus alvarezii against pathogenic bacteria by P. Bhuyar, M.H. Rahim, S. Sundararaju, G.P. Maniam, N. Govindan

    Published 2020-01-01
    “…Total phenolic content and ferric reducing assays were employed to quantify antioxidant properties. Whereas, the disc diffusion assays were used to study antibacterial activity. …”
    Get full text
    Article
  8. 2548

    Microenvironment-confined kinetic elucidation and implementation of a DNA nano-phage with a shielded internal computing layer by Decui Tang, Shuoyao He, Yani Yang, Yuqi Zeng, Mengyi Xiong, Ding Ding, Weijun Wei, Yifan Lyu, Xiao-Bing Zhang, Weihong Tan

    Published 2025-01-01
    “…We explain the contradiction between fast molecular diffusion and effective DNA computation using a “diffusion trap” theory and comprehensively overcome the kinetic bottleneck of DNP by determining the rate-limiting step. …”
    Get full text
    Article
  9. 2549

    Développer la culture du paysage chez les acteurs locaux : la démarche du Parc naturel régional de la Narbonnaise en Méditerranée à l’épreuve de la pression urbaine by Pierre Dérioz, Philippe Béringuier, Maud Loireau

    Published 2019-07-01
    “…Trying to overcome what appears to be a sort of consensus about the importance of the landscape dimension due to the European Landscape Convention and to the evolution of the French legislative framework, the paper tries to highlight the processes of emergence and diffusion of a collective “culture of landscape” applied to urban planning. …”
    Get full text
    Article
  10. 2550

    Strategic Antecedents and Consequents for the Performance of E-Business Companies by Elnivan Moreira de Souza, Paulo César de Sousa Batista

    Published 2017-01-01
    “…The research is supported theoretically by the Technological, Organizational and Environmental framework (TOE), derived from the Diffusion of Innovation Theory (DIT), for the Strategic Background (IFINEDO, 2011), by the Business Model theory (OSTERWALDER; PIGNEUR; 2010; SOUZA; BATISTA, 2014) and by the business performance literature (RAMANUJAN; VENKATRAMAN, 1987). …”
    Get full text
    Article
  11. 2551
  12. 2552
  13. 2553

    Local government broadband policies for areas with limited Internet access by Yoshio Arai, Sae Naganuma, Yasukazu Satake

    Published 2012-10-01
    “…Despite their wide diffusion in developed countries, broadband services are still limited in areas where providing them is not profitable for private telecom carriers. …”
    Get full text
    Article
  14. 2554

    The Existence of Weak D-Pullback Exponential Attractor for Nonautonomous Dynamical System by Yongjun Li, Xiaona Wei, Yanhong Zhang

    Published 2016-01-01
    “…As an application, we obtain the existence of weak D-pullback exponential attractor for reaction diffusion equation in H01 with exponential growth of the external force.…”
    Get full text
    Article
  15. 2555
  16. 2556

    A model of thermotherapy treatment for bladder cancer by Christoph Sadée, Eugene Kashdan

    Published 2016-07-01
    “…The model is based on the conductive Maxwell's equations used to simulate the therapy administration and Convection-Diffusion equation for incompressible fluid to study heat propagation through the bladder tissue. …”
    Get full text
    Article
  17. 2557

    The Adsorption of Pollutants from Aqueous Effluents Using a Two-Resistance Mass-Transfer Model by G. McKay, J.C. Kelly, I.F. McConvey

    Published 1991-03-01
    “…Both methods are based on external mass transfer and internal diffusion as the controlling mass-transfer resistances. …”
    Get full text
    Article
  18. 2558

    The investigation of the kinetics of hydrochemical oxidation of metal sulphides with the aim of determination of the optimal conditions for the selective extraction of molybdenum f... by Lutsik V., Sobolev A.

    Published 2005-01-01
    “…The conditions of kinetically and diffusion-controlled processes were detected. The details of mechanism of the studied processes were revealed. …”
    Get full text
    Article
  19. 2559
  20. 2560