Results 41 to 50 of about 283,235 (345)

Equivalent Modal Damping Ratios of a Composite Tube-Type Tall Building to Dynamic Wind Loading

open access: yesShock and Vibration, 1996
This article discusses computing methods of the equivalent modal damping ratio for a composite tube-type tall building. The equivalent damping ratio of a composite structure under wind-induced vibrations encompasses the combined effects from the ...
B.C. Huang   +3 more
doaj   +1 more source

Errors in Estimating Modal Damping Ratio.

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1995
The purpose of this paper is to investigate the effect of measurement errors on the modal damping ratio. Errors in estimating modal damping ratio are derived for various curve-fitting methods. For the iterative method, errors in estimating modal damping ratio are induced by bias errors in the frequency response function.
Makoto Watanabe, Michiharu Okano
openaire   +2 more sources

Ultra-thin low frequency perfect sound absorber with high ratio of active area [PDF]

open access: yes, 2018
A concept of ultra-thin low frequency perfect sound absorber is proposed and demonstrated experimentally. To minimize non-linear effects, an high ratio of active area to total area is used to avoid large localized amplitudes.
Aurégan, Yves
core   +4 more sources

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

open access: yesFEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Vibration control of self-excited system and forced self-excited system by dynamic vibration absorber

open access: yesNihon Kikai Gakkai ronbunshu, 2021
It is desired that the forced self-excited vibrations of structures subjected to the vortex excitation and the long-period earthquake are quenched. Therefore, this paper deals with the vibration control of self-excited system and forced self-excited ...
Yutaka YOSHITAKE   +5 more
doaj   +1 more source

Optimization of the damped quantum search [PDF]

open access: yes, 2012
The damped quantum search proposed in [A. Mizel, Phys. Rev. Lett., 102 150501 (2009)] was analyzed by calculating the highest possible probability of finding the target state in each iteration.
Banzon, Ronald   +2 more
core  

Amplitude Damping for single-qubit System with single-qubit mixed-state Environment

open access: yes, 2007
We study a generalized amplitude damping channel when environment is initially in the single-qubit mixed state. Representing the affine transformation of the generalized amplitude damping by a three-dimensional volume, we plot explicitly the volume ...
D K Park   +13 more
core   +1 more source

Identification of functional murine mitochondrial formyl peptides and their effects on myeloid‐derived suppressor cell generation

open access: yesFEBS Open Bio, EarlyView.
We first identified functional murine mitochondrial N‐formyl peptides (MT‐FPs) and investigated their effects on the in vitro myeloid‐derived suppressor cell (MDSC) generation from bone marrow cells. We demonstrated that MT‐FPs acted directly on bone marrow cells to promote MDSC generation and modulated the polymorphonuclear (PMN)‐MDSC/monocyte (M ...
Miyako Ozawa   +2 more
wiley   +1 more source

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian   +4 more
wiley   +1 more source

Identification and evaluation of linear damping models in beam vibrations [PDF]

open access: yes, 1969
Sensitive method, identifying effective damping mechanisms, involves comparing experimentally determined ratio of first to second mode magnification factors related to common point on beam.
Boers, B. L.   +2 more
core   +1 more source

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