Results 51 to 60 of about 20,962 (291)

Numerical Simulation of Flows Using the Fourier Pseudospectral Method and the Immersed Boundary Method

Axioms
The present work proposes the application of a computational methodology based on the coupling of the Fourier Pseudospectral Method (FPSM) and the Immersed Boundary Method (IBM) for conducting flow simulations over slender airfoils.
Laura Augusta Vasconcelos de Albuquerque, Mariana Fernandes dos Santos Villela, Felipe Pamplona Mariano   +2 more
doaj   +1 more source

Ground Motion Simulations for the 19 January 2020 Jiashi, China, Earthquake Using Stochastic Finite‐Fault Approach

Earth and Space Science, 2022
A 6.0‐magnitude (Mw) earthquake was reported to have occurred in Jiashi County, Xinjiang at 21:27 on 19 January 2020, Beijing time (13:27 UTC). This study applied a stochastic finite‐fault approach based on the dynamic corner frequency (EXSIM) to ...
Chong Wang, Pengfei Dang, Wenhao Qi, Yadong Li, Fuyun Wang, Jingshan Bo   +5 more
doaj   +1 more source

Sustainable Electrochemical Synthesis of High‐Quality MXenes: Mechanistic Insights, Applications, Challenges, and Technological Prospects

Advanced Functional Materials, EarlyView.
Electrochemical etching provides an eco‐friendly alternative to hazardous HF methods for MXene production. This approach facilitates the selective isolation of the A‐layer from MAX phases with tunable surface terminations. Controlling voltage, electrolytes, temperature, and duration enables the optimal structural integrity. Nevertheless, existing scale
Jagdeep Singh, Madhusudhana M Devadiga, Santosh K. Tiwari, AS Dhaliwal, Gurpreet Singh Selopal   +4 more
wiley   +1 more source

A Space–Time Spectral Method for Nonlinear Fractional Convection–Diffusion Equations with Viscosity Terms

Fractal and Fractional
We develop a high-order space-time spectral method for nonlinear convection–diffusion equations with a Riemann–Liouville time-fractional derivative and a spectrally defined space-fractional Laplacian.
Zhe Yu, Shanshan Guo, Xinming Zhang, Baohe Zhang   +3 more
doaj   +1 more source

Co‐Electrospinning Extracellular Matrix with Polycaprolactone Enables a Modular Approach to Balance Bioactivity and Mechanics of a Multifunctional Bone Wrap

Advanced Healthcare Materials, EarlyView.
The incorporation of nondigested ECM and synthetic polymers into a co‐electrospinning system enables the decoupling of bioactivity and mechanical properties within a single wrap. This technique is used to develop a multifunctional bone wrap that achieves augmented membrane durability, sustained infection control, and enhanced vascularity for use in ...
Sarah Jones, Madeline Laude, Zeenat Oyebanji, Ruchi Birur, Andres Luengo Martinez, Isabelle Gilbert, Phillip Baek, Nichole Longbottom, Nicole McCullough, Staci J. Horn, Chien‐Yu Lin, Matthew J. Lohr, Fred Clubb, Manuel K. Rausch, Elizabeth Cosgriff‐Hernandez   +14 more
wiley   +1 more source

Synthesis of ZrO2/MgAl-LDH composites and evaluation of its isotherm, kinetics and thermodynamic properties in the adsorption of congo red dye

Chemical Thermodynamics and Thermal Analysis, 2022
Recently, the treatment of waste water by Zr-based adsorbents had significantly attracted wide interest among researchers owing to its distinct features.
Deepmoni Brahma, Hemaprobha Saikia
doaj   +1 more source

A Lagrange Polynomial Chebyshev Pseudo Spectral Time Domain Method in One Dimensional Large Scale Applications [PDF]

, 2020
Pseudo Spectral Time Domain method based on Discrete Fourier series has been widely used in computational electromagnetics. However, this method has some disadvantages such as, the Gibbs phenomena, source conditioning and errors due to interpolation and ...
Ahmet Güneş, Serkan Aksoy
core  

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Nonlinear Three-Dimensional Simulations of the Gradient Drift and Secondary Kelvin–Helmholtz Instabilities in Ionospheric Plasma Clouds

Atmosphere, 2023
A newly developed three-dimensional electrostatic fluid model solving continuity and current closure equations aims to study phenomena that generate ionospheric turbulence.
Lujain Almarhabi, Chirag Skolar, Wayne Scales, Bhuvana Srinivasan   +3 more
doaj   +1 more source

Modern spectral analysis in HF radar remote sensing. [PDF]

, 1998
High-Frequency (HF) radar systems are currently used to collect wave data. By applying spectral analysis methods, such as the Fast Fourier Transform (FFT) method, to the radar backscatter from the ocean surface, the so-called Doppler spectrum is ...
Vizinho, A., Vizinho, A
core