Heat and Helium-3 Fluxes from Teide Volcano, Canary Islands, Spain by Mar Alonso, Eleazar Padrón, Hirochika Sumino, Pedro A. Hernández, Gladys V. Melián, María Asensio-Ramos, Fátima Rodríguez, Germán Padilla, Marta García-Merino, Cecilia Amonte, Nemesio M. Pérez

“…The thermal energy released from Teide summit cone by diffuse degassing was 2.2 MW, and the heat flux calculated through Dawson’s method was 8.1 MW, difference due to the comparison of purely convective areas as the crater with diffusive areas as the flanks of the volcano. …”
Get full text

Preparation and Utilization of Kapok Hull Carbon for the Removal of Rhodamine-B from Aqueous Solution by P. S. Syed Shabudeen, R. Venckatesh, S. Pattabhi

“…The first-order rate equation by Lagergren was tested on the kinetic data, and isotherm data was analyzed for possible agreement with the Langmuir and Freundlich adsorption isotherm equations. The intraparticle diffusion rate equation from which adsorption rate constants, diffusion rate constants and diffusion coefficients were determined. …”
Get full text

Phenol and methylene blue adsorption on heat-treated activated carbon: Characterization, kinetics, and equilibrium studies by Carina A Sáenz-Alanís, Refugio B García-Reyes, Eduardo Soto-Regalado, Alcione García-González

“…Adsorption kinetics of phenol and methylene blue was predicted adequately with the empirical pseudo-second-order model, the intraparticle diffusion model, and the homogeneous solid diffusion model, but mass transfer coefficients of the diffusion models help to better understand the adsorption phenomenon. …”
Get full text

Denoising of Tourist Street Scene Image Based on ROF Model of Second-Order Partial Differential Equation by Xiaofeng Yang

“…We also give a detailed analysis of the diffusion performance of the total variational model and then propose an adaptive total variational diffusion model. …”
Get full text

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. …”
Get full text

Hopf Bifurcation for a FitzHugh–Nagumo Model with Time Delay in a Network by Suxia Wang

“…A reaction diffusion system is used to study the interaction between species in a population dynamic system. …”
Get full text

An existence result for a semipositone problem with a sign changing weight by Jaffar Ali, R. Shivaji

“…We establish an existence result on positive solution for a class of reaction-diffusion equation with semipositone structure. In particular, our results apply to the diffusive logistic equation with a class of sign changing weight and constant yield harvesting. …”
Get full text

Fujita Exponent for a Nonlinear Degenerate Parabolic Equation with Localized Source by Yulan Wang, Xiaojun Song, Chao Ye

“…This paper is devoted to understand the blow-up properties of reaction-diffusion equations which combine a localized reaction term with nonlinear diffusion. …”
Get full text

Estimation of Corrosion-Free Life for Concrete Containing Ground Granulated Blast-Furnace Slag under a Chloride-Bearing Environment by Sung In Hong, Ki Yong Ann

“…The rate of chloride transport by diffusion in concrete containing ground granulated blast-furnace slag (GGBS) was mathematically estimated to predict the corrosion-free service life of concrete structures exposed to seawater environment. …”
Get full text

Inverse Boundary Value Problem for the Magnetohydrodynamics Equations by Lianhua He, Zhong Tan

“…In this paper, we consider the stationary magnetohydrodynamics (MHD) equations in a bounded domain of ℝd d=2,3 with viscosity and magnetic diffusing. By the linearization technique, we prove that the uniqueness of viscosity function and magnetic diffusing function in the MHD equations is determined from the knowledge of the Cauchy data measured on the boundary.…”
Get full text

Higher-Order Compact Finite Difference for Certain PDEs in Arbitrary Dimensions by Yan Gao, Songlin Liu

“…Then, we also obtain the fourth-order CFD schemes of the diffusion equation with variable diffusion coefficients. …”
Get full text

Turing patterns in a networked vegetation model by Xiaomei Bao, Canrong Tian

“…We show that the large diffusion induces stable Turing patterns.…”
Get full text

The Effect of Stoichiometry on Hydrogen Embrittlement of Ordered Ni3Fe Intermetallics by Y. X. Chen, Tao Chen, Haiyan Qian

“…The effects of Fe stoichiometry on hydrogen embrittlement and hydrogen diffusion in ordered Ni3Fe intermetallics were investigated. …”
Get full text

Research on Simulation of Multi-Path Fading of Narrow-Band Channel Based on Stochastic Bridge by Lei Liu, Wei Xia, Jianghong Han

“…The laws of physics about stochastic ray diffusing in percolation lattices were studied to improve constraints of physical diffusion, which made it with enough samples to model power delay probability. …”
Get full text

CFD algorithm for moving boundary problems of isothermal drying and shrinkage: Case of prunes by Lentzou Diamanto, Templalexis Charalampos, Boudouvis Andreas G., Karathanos Vaios, Xanthopoulos Georgios

“…A moving-boundary FEM model describing isothermal drying of fruit was employed as an inverse problem to estimate water diffusivity and peel resistance, including shrinkage. …”
Get full text

Research on the oxidation sequence of Ni-Al-Pt alloy by combining experiments and thermodynamic calculations by Na Ta, Lijun Zhang, Qin Li

“…The diffusion of Ni is gradually restricted by the establishment of the α-Al2O3 layer. …”
Get full text

Pattern Dynamics Analysis of Host–Parasite Models with Aggregation Effect Based on Coupled Map Lattices by Shuo Liang, Wenlong Wang, Chunrui Zhang

“…This paper investigates the effect of parasitoid aggregation attacks on a host in a host–parasitoid model with self-diffusion on two-dimensional coupled map lattices. …”
Get full text

An Algorithm to Develop Lumped Model for Gunn-Diode Dynamics by Umesh Kumar

“…A nonlinear lumped model can be developed for Gunn-Diodes to describe the diffusion effects as the domain travels from cathode to anode of a Gunn-Diode. …”
Get full text

Computer simulation of synthesis of yttrium aluminum garnet by Feliksas Ivanauskas, Aivaras Kareiva, Bogdanas Lapcun

“…Relations between rates of reaction and diffusion was investigated. …”
Get full text

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

“…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