A novel model of photoacoustic and thermalelectronic waves in semiconductor material by M. H. Raddadi, Kh. Lotfy, A. A. El-Bary, A. M. S. Mahdy, E. S. Elidy

“…We explore theoretically the photoacoustic wave propagation created by the photoexcited carrier diffusion in the thermoelastic domain. Consideration is given to the coupling of acoustic and thermomechanical waves. …”
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Damage modelling in concrete subject to sulfate attack by N. Cefis, C. Comi

“…In this work, we make use of a two-ions formulation of the reactive-diffusion problem and we propose a bi-phase chemo-elastic damage model aimed to simulate the mechanical response of concrete and apt to be used in structural analyses.…”
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Processus d’intégration de villages périphériques dans le système d’approvisionnement de Bamako by Gwenaëlle Raton

“…The first question concerns the policies which influenced the diffusion and normalization of a selling model characterized by weekly markets, locally known as “fairs”. …”
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L’anacarde : produit de la globalisation, moteur de la territorialisation, l’exemple du Sud du Burkina Faso by Sarah Audouin, Alexis Gonin

“…The expansion of cashew nut orchards became the fact of individual farmers. Introduction and diffusion of the orchards go along, at local scale, with land right renegotiation. …”
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Existence of Traveling Wave Solutions for Cholera Model by Tianran Zhang, Qingming Gou, Xiaoli Wang

“…To investigate the spreading speed of cholera, Codeço’s cholera model (2001) is developed by a reaction-diffusion model that incorporates both indirect environment-to-human and direct human-to-human transmissions and the pathogen diffusion. …”
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Gas Transport Arising from the Decomposition of Methane Hydrates in the Sediments of the Arctic Shelf to the Atmosphere: Numerical Modeling by Mariia Trimonova, Nikolay Baryshnikov, Sergey Turuntaev

“…At higher accumulation rates (10⁻⁶ kg/m³·s), gas diffusion has minimal impact on the saturation front movement, whereas at lower rates (10⁻⁸ kg/m³·s), diffusion significantly affects the front’s behavior. …”
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COVID-19 CONSPIRACISM IN THE AGE OF POST-TRUTH by Ömer Ersin Kahraman

“…At first glance, it can be thought that the use of new communication technologies is to blame for the diffusion of false news, and a solution can be found in developing new tools to detect hoaxes beforehand. …”
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Concrete Mix Design for Service Life of RC Structures under Carbonation Using Genetic Algorithm by Seung-Jun Kwon, Byung Jae Lee, Yun Yong Kim

“…For this study, mix proportions and CO2 diffusion coefficients are analyzed through the previous studies, and then the fitness function of CO2 diffusion coefficient is derived through regression analysis. …”
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Dynamic Modeling of Stress-Induced Defect Expansion in VCSELs by Yuqi Zhang, Xun Li, Jia Zhao

“…To address this issue, we present a macroscopic phenomenological evolution model that describes the dynamic expansion of defects in VCSELs, in which the expansion of defects is treated as an anisotropic lattice strain diffusion process. We further exploit a diffusion-limited aggregation (DLA) method in solving the diffusion equation, which describes the random propagation and aggregation of strain in the vicinity of highly strained areas, resulting in defect formation when the stress from accumulated strain surpasses the bonding force of the atoms in the lattice. …”
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Transient Flow Theory of Multiple-Fractured Horizontal Wells with Complex Mechanisms in Shale Gas Reservoirs by Dianfa Du, Genkai Zhang, Yanwu Zhao, Xiaofei Sun, Bin Zhang

“…The results show that the Knudsen diffusion and slippage coefficients mainly affect the apparent permeability of the matrix pores. …”
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Effect of Thermal Parameters on Hydration Heat Temperature and Thermal Stress of Mass Concrete by Yuqin Zhao, Gaosheng Li, Caixia Fan, Wentai Pang, Yongtao Wang

“…Increasing the solar absorption coefficient, specific heat, and thermal expansion coefficient and reducing the thermal conductivity, surface heat diffusion coefficient, and temperature rise coefficient of concrete can reduce the maximum principal tensile stress in the structure to a certain extent. …”
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Adsorption of Chelerythrine from Toddalia asiatica (L.) Lam. by ZSM-5 by Yunlong Liu, Jie Guo, Zhuobing Xiao, Dazhao Peng, Ke Song

“…The results show that the kinetics data fit the pseudo-second-order model well (R2 = 0.9991), and the intraparticle diffusion model has 3 diffusion stages, preliminarily indicating that chemisorption plays a major role in the adsorption process, and the sorption mechanism includes intraparticle, external, and boundary diffusion. …”
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Adsorption Characteristics of Coal-Based Activated Carbons. 1. Adsorption of Nitrogen and Carbon Dioxide by Th. El-Nabarawy, N.Sh. Petro, S.Abd. El-Aziz

“…Non-activated carbon from coal contains ultrafine pores in which adsorption of nitrogen at 77 K is controlled by activated diffusion. Carbons activated with phosphoric acid or with steam contain a large fraction of microporosity. …”
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Performance Evaluation Indexes in Public Administration Some issues of their actual usefulness by Laura Tampieri

“…The paper aims to compare performance indicator systems of Austria, Italy and Slovenia, emphasizing the relationship between the indicators and their diffusion in government managerial control. In particular the paper underlines the connection between the difficulty of indexes application and the level of diffusion. in Public Administrations.…”
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Existence and Uniqueness of Weak Solutions for a New Class of Convex Optimization Problems Related to Image Analysis by Anas Tiarimti Alaoui, Mostafa Jourhmane

“…This paper proposes a new anisotropic diffusion model in image restoration that is understood from a variational optimization of an energy functional. …”
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Research on the Fracture Grouting Mechanism and PFC Numerical Simulation in Loess by Zhenlong Zhang, Zhushan Shao, Xiaobo Fang, Xijun Liang

“…According to the model test of fracture grouting in loess, the grout changes with the pressure variation, which can be divided into three stages, foundation, expansion and fracturing, and diffusion, and ultimately splits into “Y” shaped grout fractures. …”
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An Improved Piecewise Linear Chaotic Map Based Image Encryption Algorithm by Yuping Hu, Congxu Zhu, Zhijian Wang

“…The algorithm uses the MPWLCM to permute and diffuse plain image simultaneously. Due to the sensitivity to initial key values, system parameters, and ergodicity in chaotic system, two pseudorandom sequences are designed and used in the processes of permutation and diffusion. …”
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On the Non-Newtonian Fluid Equation with a Source Term and a Damping Term by Huashui Zhan, Yongping Li

“…After giving a result of the existence, if the diffusion coefficient is degenerate on the boundary, the local stability of the weak solutions is established without any boundary condition. …”
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Hydrodynamic scaling limit of continuum solid-on-solid model by Anamaria Savu

“…A fourth-order nonlinear evolution equation is derived from a microscopic model for surface diffusion, namely, the continuum solid-on-solid model. …”
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3D Online Submicron Scale Observation of Mixed Metal Powder's Microstructure Evolution in High Temperature and Microwave Compound Fields by Dan Kang, Feng Xu, Xiao-fang Hu, Bo Dong, Yu Xiao, Ti-qiao Xiao

“…The neck size-time curve was obtained and the neck growth exponent was 7.3, which indicated that surface diffusion was the main diffusion mechanism; the reason was the eddy current loss induced by the external microwave fields providing an additional driving force for mass diffusion on the particle surface. …”
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