Results 21 to 30 of about 828,607 (304)

Comparative studies between longitudinal and torsional modes in phacoemulsification, using active fluidics technology along with the intrepid balanced tip

open access: yesIndian Journal of Ophthalmology, 2018
Purpose: To compare and report the intra- and postoperative outcomes of phacoemulsification between longitudinal (LPKE) and torsional (TPKE) mode, using active fluidics along with the intrepid balanced tip.
Sushobhan Dasgupta, Rohan Mehra
doaj   +1 more source

Propagation of guided waves in a hollow circular cylinder application to non destructive testing

open access: yesEPJ Web of Conferences, 2010
In this paper, we study the propagation of guided waves in a tube and their interaction with surface defects. Axisymmetric (longitudinal and torsional) modes and nonaxisymmetric (flexural) modes are found and represented in phase and group velocity ...
Boubenider F., Djili S.
doaj   +1 more source

Design of a Novel Type Micro-Stirrer Excited by Longitudinal Elastic Wave for Thrombus Dissolution

open access: yesJournal of Biomechanical Science and Engineering, 2011
This paper presents the method to design a novel micro stirrer for high effective dissolution of cerebral thrombus or blood clot. The micro stirrer is a beam with supported one side and the other side is attached to an asymmetrical stirrer.
Ajoudanian MOHAMMAD   +2 more
doaj   +1 more source

Single longitudinal mode narrow linewidth thulium-doped fiber laser based on an eye-shaped dual-ring filter

open access: yesFrontiers in Physics, 2023
A single-longitudinal-mode (SLM) thulium-doped fiber laser, based on an eye-shaped passive dual-ring filter, is designed and constructed. The eye-shaped passive compound cavity consisting of four couplers is used to increase the longitudinal mode spacing,
Xiangdong Wang   +12 more
doaj   +1 more source

Selection Rules for Resonant Longitudinal Injector-Coupling in Experimental Rocket Combustors

open access: yesAerospace, 2022
This paper investigates different types of longitudinal mode coupling in subscale rocket combustion chambers using experimental data and numerical simulations.
Tim Horchler
doaj   +1 more source

Intelligent Bus Platoon Lateral and Longitudinal Control Method Based on Finite-Time Sliding Mode

open access: yesSensors, 2022
Considering the rapid convergence of the longitudinal and lateral tracking errors of the platoon, a finite-time tracking control method for the longitudinal and lateral directions of the intelligent bus platoon is proposed. Based on the bus platoon model
Lingli Yu   +4 more
doaj   +1 more source

A theory of longitudinal modes in semiconductor lasers [PDF]

open access: yes, 1982
A theory of longitudinal mode lasing spectrum of semiconductor lasers is developed which takes into account the nonuniform carrier and photon distributions and local gain spectrum shifts inside lasers with low end mirror reflectivities.
Lau, Kam Y., Yariv, Amnon
core   +1 more source

Single-Longitudinal-Mode Laser at 1123 nm Based on a Twisted-Mode Cavity

open access: yesCrystals, 2021
A single-longitudinal-mode (SLM) Neodymiun-doped Yttrium Aluminium Garnet (Nd:YAG) laser at 1123 nm was first demonstrated with a twisted-mode (TM) cavity. By eliminating the spatial hole burning phenomenon, a stable SLM 1123 nm laser output was obtained.
Yang Liu   +6 more
doaj   +1 more source

Enhanced longitudinal mode spacing in blue-violet InGaN semiconductor laser

open access: yes, 2012
A novel explanation of observed enhanced longitudinal mode spacing in InGaN semiconductor lasers has been proposed. It has been demonstrated that e-h plasma oscillations, which can exist in the laser active layer at certain driving conditions, are ...
I. V. Smetanin   +4 more
core   +1 more source

Beam halo studies using a three-dimensional particle-core model

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2000
In this paper we present a study of beam halo based on a three-dimensional particle-core model of an ellipsoidal bunched beam in a constant focusing channel including the effects of nonlinear rf focusing.
Ji Qiang, Robert D. Ryne
doaj   +1 more source

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