Results 41 to 50 of about 5,680 (136)

Internal Wave Diffraction by a Strip of an Elastic Plate on the Surface of a Stratified Fluid

International Journal of Applied Mechanics and Engineering, 2013
The problem of internal wave diffraction by a strip of an elastic plate of finite width present on the surface of an exponentially stratified liquid is investigated in this paper.
P. Dolai, D.P. Dolai
doaj   +1 more source

The Effect of the Wall Thickness of the Material Loaded Cavity On the RCS Reduction

Düzce Üniversitesi Bilim ve Teknoloji Dergisi
In this paper, the effect of a parallel plate waveguide's wall thickness on radar cross-section reduction (RCS) is rigorously analyzed for H-polarization by using the Wiener-Hopf Technique, when the waveguide region is loaded with dielectric material and
Oğuzhan Demiryürek, Filiz Birbir Ünal
doaj   +1 more source

Rayleigh wave scattering at the foot of a mountain

International Journal of Mathematics and Mathematical Sciences, 1987
A theoretical study of scattering of seismic waves at the foot of a mountain is discussed here. A mountain of an arbitrary shape and of width a (0≤x≤a, z=0) in the surface of an elastic solid medium (z≥0) is hit by a Rayleigh wave. The method of solution
P. S. Deshwal, K. K. Mann
doaj   +1 more source

Scattering by a semi-infinite lattice and the excitation of Bloch waves [PDF]

, 2013
The interaction of a time-harmonic plane wave with a semi-infinite lattice of identical circular cylinders is considered. No assumptions about the radius of the cylinders, or their scattering properties, are made. Multipole expansions and Graf’s addition
Thompson, I, Tymis, N
core   +2 more sources

The Dynamics of Fast and Slow Earthquake Ruptures in Viscoelastic Materials

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 6, June 2025.
Abstract Classical theories using linear elasticity predict that crack propagation asymptotically approaches a limiting speed, beyond which the energy balance becomes unphysical. However, geophysical and laboratory observations show that ruptures can propagate at either a very low, stable speed or a significantly high speed.
Huihui Weng
wiley   +1 more source

Quaternary stabilization of a GH2 β‐galactosidase from the psychrophile A. ikkensis, a flexible and unstable dimeric enzyme

Protein Science, Volume 34, Issue 5, May 2025.
Abstract Studies of cold‐active enzymes may elucidate the basis for low‐temperature activity and contribute to their wider application in energy‐efficient processes. Here we investigate the cold‐active GH2 β‐galactosidase from the psychrophilic bacterium Alkalilactibacillus ikkensis (AiLac).
Jan S. Nowak, Nikoline Kruuse, Helena Ø. Rasmussen, Pengfei Tian, Julie Astono, Søren Schultz‐Nielsen, Mariane S. Thøgersen, Peter Stougaard, Jan Skov Pedersen, Daniel E. Otzen   +9 more
wiley   +1 more source

Aerodynamic noise from rigid trailing edges with finite porous extensions

, 2017
This paper investigates the effects of finite flat porous extensions to semi-infinite impermeable flat plates in an attempt to control trailing-edge noise through bio-inspired adaptations.
Ayton, L. J., Kisil, A. V.
core   +1 more source

Topological coordination numbers and coordination reciprocity from electron‐density distributions

Acta Crystallographica Section A, Volume 81, Issue 3, Page 221-244, May 2025.
An approach is presented to calculate topological coordination numbers (tCNs) obeying the principle of coordination reciprocity from solid angles subtended by the interatomic surfaces of electron density (QTAIM) atomic domains. The tCN approach characterizes a compound's coordination situation as a set of sub‐coordination scenarios with associated ...
Frank R. Wagner, Riccardo Freccero, Yuri Grin   +2 more
wiley   +1 more source

Optimized Hybrid Probabilistic and Geometric Constellation Shaping for Coherent Optical Communication Systems Using End‐to‐End Learning

Advanced Photonics Research, Volume 6, Issue 4, April 2025.
In this article, hybrid probabilistic and geometric constellation shaping to enhance spectral efficiency in coherent optical communication systems, particularly under a Wiener phase noise channel, is investigated. By integrating a two‐stage phase search algorithm with digital signal processing and gradient descent, the method outperforms geometrically ...
Zhiyang Liu, Lu Zhang, Xiaoyu Liu, Shilin Xiao, Weiying Yang, Weisheng Hu   +5 more
wiley   +1 more source

Dynamical Instabilities of Quasi-static Crack Propagation Under Thermal Stress [PDF]

, 2003
We address the theory of quasi-static crack propagation in a strip of glass that is pulled from a hot oven towards a cold bath. This problem had been carefully studied in a number of experiments that offer a wealth of data to challenge the theory.
Bouchbinder, Eran, Hentschel, H. George E., Procaccia, Itamar   +2 more
core   +1 more source