Results 21 to 30 of about 79,083 (291)

Investigating the predicted breathing-mode excitation of the Hoyle state [PDF]

open access: yesPhysics Letters B, 2022
Knowledge of the low-lying monopole strength in C12—the Hoyle state in particular—is crucial for our understanding of both the astrophysically important 3α reaction and of α-particle clustering. Multiple theoretical models have predicted a breathing mode
K.C.W. Li   +27 more
doaj   +2 more sources

Robust adaptive multivariable higher-order sliding mode flight control for air-breathing hypersonic vehicle with actuator failures

open access: yesInternational Journal of Advanced Robotic Systems, 2016
This article proposes an adaptive multivariable higher-order sliding mode control for the longitudinal model of an air-breathing vehicle under system uncertainties and actuator failures.
Peng Li, Jianjun Ma, Zhiqiang Zheng
doaj   +2 more sources

Computational fluid dynamics simulation of upper airway flow and soft tissue deformation in a mouth-breathing patient: a case study [PDF]

open access: yesBMC Oral Health
Objective The primary objective of this study was to establish a three-dimensional fluid-structure interaction (FSI) model to compare the biomechanical effects of three distinct breathing modes—nasal (NA), oronasal (ONA), and oral (OA) ventilation—on ...
Wei Ji   +6 more
doaj   +2 more sources

Shear and Breathing Modes of Layered Materials [PDF]

open access: yesACS Nano, 2021
Layered materials (LMs), such as graphite, hexagonal boron nitride, and transition-metal dichalcogenides, are at the center of an ever-increasing research effort, due to their scientific and technological relevance. Raman and infrared spectroscopies are accurate, non-destructive approaches to determine a wide range of properties, including the number ...
Pizzi, Giovanni   +4 more
openaire   +4 more sources

Breathing mode of a skyrmion on a lattice [PDF]

open access: yesPhysical Review B, 2020
9 PR pages, 12 figure ...
Dmitry A. Garanin   +2 more
openaire   +2 more sources

Exposure of Ophthalmologists to Patients' Exhaled Droplets in Clinical Practice: A Numerical Simulation of SARS-CoV-2 Exposure Risk

open access: yesFrontiers in Public Health, 2021
Background: Lack of quantification of direct and indirect exposure of ophthalmologists during ophthalmic diagnostic process makes it hard to estimate the infectious risk of aerosol pathogen faced by ophthalmologists at working environment.Methods ...
Yanchao Fan   +12 more
doaj   +1 more source

Numerical and Experimental Investigation of Longitudinal Oscillations in Hall Thrusters

open access: yesAerospace, 2021
One of the main oscillatory modes found ubiquitously in Hall thrusters is the so-called breathing mode. This is recognized as a relatively low-frequency (10–30 kHz), longitudinal oscillation of the discharge current and plasma parameters.
Vittorio Giannetti   +4 more
doaj   +1 more source

Vertical Transient Response Analysis of a Cracked Jeffcott Rotor Based on Improved Empirical Mode Decomposition

open access: yesVibration, 2022
The crack-induced changes in the vertical transient response of a rotating shaft–disc system, Jeffcott rotor, are investigated for transverse crack detection. The crack is considered as a breathing crack.
Hamid Khorrami   +2 more
doaj   +1 more source

An unstable 0D model of ionization oscillations in Hall thruster plasmas

open access: yesFrontiers in Physics, 2023
The breathing mode is an instability typical of Hall thrusters, which is characterized by oscillations of the discharge current with amplitude of the order of its mean value and frequency in the 5–30 kHz range.
L. Leporini   +3 more
doaj   +1 more source

Numerical Simulation of Breathing Mode Oscillation on Bubble Detachment

open access: yesFluids, 2020
When a bubble detaches from a nozzle immersed in water, a sound is emitted owing to the detachment. The bubble deformation and sound emission generated after detachment has been investigated in many studies, in which the breathing mode with a natural ...
Takao Oku   +3 more
doaj   +1 more source

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