Results 21 to 30 of about 7,683,030 (332)

How Modes Shape Casimir Physics

open access: yesInternational Journal of Modern Physics A, 2022
Modes have steadily influenced the understanding of physical systems through time. At least since the prediction of the Casimir effect, they also play a very important role in Casimir physics and in the understanding of the different phenomena typical of this research field.
openaire   +2 more sources

Correlation of Short Pitch Rail Corrugation with Railway Wheel-Track Resonance at Low Frequencies of Excitation

open access: yesVibration, 2020
As much as there has been a significant increase in the development of railway systems in recent years, one of the significant drawbacks on this mode of transport is ground-borne vibrations and noise emanating from vehicle-track interaction in service ...
Bingo Masiza Balekwa   +1 more
doaj   +1 more source

Dynamic Characterization of Cercal Mechanosensory Hairs of Crickets

open access: yesInsects, 2012
Previous dynamic characterizations of the cercal mechanosensory hairs of crickets have generally been limited to the first resonant frequency and associated deflection shape.
Joel M. Book, Samuel F. Asokanthan
doaj   +1 more source

SCALING OF OPERATIONAL MODE SHAPES USING SENSITIVITY ANALYSIS [PDF]

open access: yesمجله مدل سازی در مهندسی, 2009
Recently, identification of dynamic properties of structures such as bridges, towers and building, which are not easy to excite, is possible by measuring only the output responses. Due to measuring only the responses when the structure is excited only by
محمد مهدی Khatibi   +2 more
doaj   +1 more source

Microbubble shape oscillations excited through ultrasonic parametric driving\ud [PDF]

open access: yes, 2010
An air bubble driven by ultrasound can become shape-unstable through a parametric instability. We report time-resolved optical observations of shape oscillations (mode n=2 to 6) of micron-sized single air bubbles.
Dollet, Benjamin   +7 more
core   +5 more sources

Influence of Mechanical Properties on Modal Analysis of Natural Fiber Reinforced Laminated Composite Trapezoidal Plates

open access: yesJournal of Natural Fibers, 2021
Present work concentrates on modal parameters of laminated composite plates composed of natural fibers reinforced with unsaturated polyester resin. The selected jute and ramie fibers underwent alkaline treatment to improve mechanical properties.
D.R. Rajkumar   +2 more
doaj   +1 more source

Mode conversion via wavefront shaping

open access: yesOptics Express, 2018
In recent years, wavefront shaping has been utilized to control and correct distorted light for enhancing a bright spot, generation of a Bessel beam or darkening a complete area at the output of a scattering system. All these outcomes can be thought of as enhancing a particular mode of the output field. In this letter, we study the relation between the
Anat, Daniel   +3 more
openaire   +2 more sources

Determination of mode shapes of a multiple cracked beam element and its application for free vibration analysis of a multi-span continuous beam

open access: yesVietnam Journal of Mechanics, 2013
This article presents some results on the determination of the vibration shape function of a multiple cracked elastic beam element, which is modeled as an assembly of intact sub-segments connected by massless rotational springs.
Tran Van Lien, Trinh Anh Hao
doaj   +1 more source

Control of lasing in fully chaotic open microcavities by tailoring the shape factor [PDF]

open access: yes, 2006
We demonstrate experimentally that lasing in a semiconductor microstadium can be optimized by controlling its shape. Under spatially uniform optical pumping, the first lasing mode in a GaAs microstadium with large major-to-minor-axis ratio usually ...
Cao, H., Fang, W., Solomon, G. S.
core   +2 more sources

Effect of Pulse Shaping on Subharmonic Aided Pressure Estimation In Vitro and In Vivo. [PDF]

open access: yes, 2016
OBJECTIVES: Subharmonic imaging (SHI) is a technique that uses the nonlinear oscillations of microbubbles when exposed to ultrasound at high pressures transmitting at the fundamental frequency ie, f METHODS: Eight waveforms with different envelopes were ...
Dave, Jaydev K.   +11 more
core   +2 more sources

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