Results 131 to 140 of about 23,622 (294)

The Importance of Metal‐Organic Framework Linker Atoms for CO2 Reduction: A DFT Study

Advanced Science, EarlyView.
Using DFT, we examine the role of linker atoms in CO2 reduction on copper‐based metal organic frameworks (Cu MOFs). Our calculations reveal that linker atoms may serve as both CO2 and H‐shuttling sites and suggest linker electrostatics as a descriptor for linker activity. ABSTRACT Although the metal within the secondary building unit of a metal‐organic
Ugochukwu Nwosu, Samira Siahrostami
wiley   +1 more source

Enhancing Maturation of Human Neuromuscular Organoids via Electrical Stimulation

Advanced Science, EarlyView.
A framework for on‐demand and non‐invasive exposure of human neuromuscular organoids (NMOs) to electrical stimuli is established to promote their maturation. The robustness and effectiveness of different stimulation regimes are evaluated via thorough characterization of organoid tissue structure and contraction capacity. Chronic electrical stimulation,
Chrysanthi‐Maria Moysidou, Inês Afonso Martins, Ismail Amr El‐Shimy, Iacopo Bicci, Donatella Cea, Christina Bukas, Isra Mekki, Mara‐Camelia Rusu, Aylin Nebol, Ines Lahmann, Marie Piraud, Enrico Klotzsch, Mina Gouti   +12 more
wiley   +1 more source

An Effective Physics‐Informed Neural Operator Framework for Predicting Wavefields

Journal of Geophysical Research: Machine Learning and Computation
Solving the wave equation is fundamental for many geophysical applications. However, numerical solutions of the Helmholtz equation face significant computational and memory challenges.
X. Ma, T. Alkhalifah
doaj   +1 more source

Preconditioning the Helmholtz Equation for Rigid Ducts

, 1998
An innovative hyperbolic preconditioning technique is developed for the numerical solution of the Helmholtz equation which governs acoustic propagation in ducts.
Kreider, Kevin L., Baumeister, Kenneth J.   +1 more
core  

Two-level preconditioners for the Helmholtz equation

, 2017
In this paper we compare numerically two different coarse space definitions for two-level domain decomposition preconditioners for the Helmholtz equation, both in two and three dimensions. While we solve the pure Helmholtz problem without absorption, the
Dolean, Victorita, Graham, Ivan,, Spence, Euan,, Graham, Ivan G., Marcella Bonazzoli, Ivan G. Graham, Graham, Ivan, G., Pierre-Henri Tournier, Bonazzoli, Marcella, Spence, Euan A., Spence, Euan, Victorita Dolean, Graham, Ivan, Euan A. Spence, Tournier, Pierre-Henri, Spence, Euan, A.   +15 more
core   +1 more source

Streptavidins Coordinate Biotin Sequestration and Self‐Resistance Within a Biotin‐Pathway Antibiotic Network

Advanced Science, EarlyView.
A conserved genomic region between two streptavidin genes in Streptomyces packages biosynthetic gene clusters for diverse biotin‐pathway antibiotics: acidomycin, stravidin, the new non‐proteinogenic amino acid ANDA, and the new BioA inhibitor α‐methyl‐KAPA.
Sumire Kurosawa, Jingjun Mo, Xiaotong Diao, Feng Xie, Tingting Wang, Haowen Zhao, Dalei Wu, Rolf Müller, Chengzhang Fu   +8 more
wiley   +1 more source

Development and Analysis of Efficient Numerical Methods for Helmholtz Equation

The Helmholtz equation, which describes the oscillatory behavior and propagation of waves, is a partial differential equation that appears in a wide range of applications.
Jayathunga, Jayathunga Arachchige Dona Irushi Imalka Lakmali
core   +1 more source

Engineering of Crystal and Domain Structures in Epitaxial Y:HfO2 Thin Films by YSZ Substrate Miscut

Advanced Science, EarlyView.
We investigate how YSZ substrate miscut influences crystal structure and domain formation in epitaxial Y‐doped HfO2 thin films. Using magnetron sputtering, high‐resolution X‐ray diffraction, atomic‐resolution scanning transmission electron microscopy, and first‐principles calculations, we systematically examine the characteristics of thickness‐ and ...
Jun Young Lee, Hyung‐Jin Choi, Kun Hee Ye, Haneul Choi, Byeong‐hyeon Lee, Min‐Seok Kim, Dong‐Hun Han, June Hyuk Lee, Sung Ok Won, Tae Heon Kim, Hye Jung Chang, Jung‐Hae Choi, Seung‐Hyub Baek   +12 more
wiley   +1 more source

A Fast Preconditioner For Helmholtz Equation

, 2012
This monograph implements a fast preconditioner of Helmholtz Equation and a related GMRES iterative algorithm.
Deng, Xiaodi
core  

-matrix and Helmholtz integral equation methods for wave scattering calculations

, 1985
The T-matrix method (TMM) and the Helmholtz integral equation method (HIEM) are wave scattering formalisms for irregularly shaped targets. They are both based on the Helmholtz integral formula (HIF) but they use different ways to achieve the ...
Tobocman, W., W. Tobocman
core   +1 more source