Results 21 to 30 of about 244,669 (294)

Complex energies of the coherent longitudinal optical phonon–plasmon coupled mode according to dynamic mode decomposition analysis

Scientific Reports, 2021
In a dissipative quantum system, we report the dynamic mode decomposition (DMD) analysis of damped oscillation signals. We used a reflection-type pump-probe method to observe time-domain signals, including the coupled modes of long-lived longitudinal ...
Itsushi Sakata, Takuya Sakata, Kohji Mizoguchi, Satoshi Tanaka, Goro Oohata, Ichiro Akai, Yasuhiko Igarashi, Yoshihiro Nagano, Masato Okada   +8 more
doaj   +1 more source

Numerical Analysis of Aeroacoustic Characteristics around a Cylinder under Constant Amplitude Oscillation

Energies, 2022
The present study numerically investigated a cylinder under oscillating motions at a low Reynolds number. The effects of two oscillation frequencies and amplitudes on the lift drag coefficient, near-field surface pressure fluctuation, and far-field noise
Peixun Yu, Jiakuan Xu, Heye Xiao, Junqiang Bai   +3 more
doaj   +1 more source

Blade oscillation mechanism for aerodynamic damping measurements at high reduced frequencies [PDF]

E3S Web of Conferences, 2022
Accurate prediction of aerodynamic damping is essential for flutter and forced response analysis of turbomachinery components. Reaching a high level of confidence in numerical simulations requires that the models have been validated against the ...
Glodic Nenad, Tavera Guerrero Carlos, Gutierrez Salas Mauricio   +2 more
doaj   +1 more source

Theory of determining the frequency of natural oscillations of span structures

Magazine of Civil Engineering, 2020
The article is devoted to the development of mathematical dependence of determination the natural oscillation frequencies of reinforced concrete span structures according to the physical, mechanical, geometric and energy characteristics of their elements
Anastasia Sychova, Sergey Zarin, Andrey Matskevich   +2 more
doaj   +1 more source

Thermographic Investigation on Fluid Oscillations and Transverse Interactions in a Fully Metallic Flat-Plate Pulsating Heat Pipe

Applied Sciences, 2023
The present investigation deals with the quantification of fluid oscillation frequencies in a metallic pulsating heat pipe tested at varying heat loads and orientations.
Luca Pagliarini, Luca Cattani, Vincent Ayel, Maksym Slobodeniuk, Cyril Romestant, Fabio Bozzoli   +5 more
doaj   +1 more source

Mechanism of contraction rhythm homeostasis for hyperthermal sarcomeric oscillations of neonatal cardiomyocytes

Scientific Reports, 2020
The heart rhythm is maintained by oscillatory changes in [Ca2+]. However, it has been suggested that the rapid drop in blood pressure that occurs with a slow decrease in [Ca2+] preceding early diastolic filling is related to the mechanism of rapid ...
Seine A. Shintani, Takumi Washio, Hideo Higuchi   +2 more
doaj   +1 more source

Oscillation Characteristics of an Artificial Cochlear Sensory Epithelium Optimized for a Micrometer-Scale Curved Structure

Micromachines, 2022
Based on the modern microelectromechanical systems technology, we present a revolutionary miniaturized artificial cochlear sensory epithelium for future implantation tests on guinea pigs.
Hiroki Yamazaki, Yutaro Kohno, Satoyuki Kawano   +2 more
doaj   +1 more source

Oscillations of finite-dimensional models of an extensible catenary [PDF]

Известия Саратовского университета. Новая серия: Математика. Механика. Информатика
This article is devoted to the study of natural oscillation frequencies of finite-dimensional models of a stretchable flexible catenary. An analytical solution for two- and three-dumbbell models is presented, as well as the results of computer modeling ...
Degilevich, Egor A., Smirnov, Alexey S.
doaj   +1 more source

One-dimensional vertical dust strings in a glass box

, 2011
The oscillation spectrum of a one-dimensional vertical dust string formed inside a glass box on top of the lower electrode in a GEC reference cell was studied. A mechanism for creating a single vertical dust string is described.
Angela Douglass, Jie Kong, Ke Qiao, Lorin Matthews, P. K. Shukla, Truell W. Hyde, Zhuanhao Zhang   +6 more
core   +1 more source

Microstructure evolution, wear and corrosion behaviors of oscillating laser clad nickel-based coatings by different oscillation frequencies

Journal of Materials Research and Technology
In this study, nickel-based coatings were fabricated with a novel “8″ type oscillating laser cladding at different oscillation frequencies. The microstructure, microhardness, room and high temperature wear resistance, corrosion resistance of the coatings
Kaiming Wang, Wei Liu, Zibo Song, Yonggang Tong, Xiaotong Pang, Mingjun Zhang, Jian Zhang, Hongwei Hu, Xixi Ji, Junhao Sun, Yang Li, Jian Gu   +11 more
doaj   +1 more source