Results 61 to 70 of about 4,345,353 (297)

Identification of characteristic parameters of layered structures using modal parameters

Mechanical Engineering Journal
In this study, we present a method for determining parameters that are essential for evaluating the health of layered structures. This method uses modal parameters to identify characteristic parameters that can accurately reproduce the measured modal damping ratio. Specifically, the proposed method uses natural frequencies, natural vibration modes, and
TAJIRI, Daiki, KAWAMURA, Shozo
openaire   +2 more sources

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

Modal parameter identification of all-GFRP composite cable-stayed footbridge in Denmark

MATEC Web of Conferences, 2017
The aim of this paper is to investigate of dynamic characteristics of cable-stayed Fiberline Bridge in Kolding, Denmark, made entirely of Glass Fiber Reinforced Polymer (GFRP) composite.
Górski Piotr, Stankiewicz Beata, Tatara Marcin   +2 more
doaj   +1 more source

Identification of Dynamics Modal Parameter for Car Chassis

IOP Conference Series: Materials Science and Engineering, 2011
This paper explores and investigates the dynamic characteristics of car chassis structure by using experimental modal analysis (EMA) method and modal testing. Dynamic characteristics are divided into three parameters include natural frequency, damping factor and mode shape.
M S M Sani, M M Rahman, M M Noor, K Kadirgama, M H N Izham   +4 more
openaire   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Operational modal analysis with non stationnary inputs [PDF]

, 2013
Operational modal analysis (OMA) techniques enable the use of in-situ and uncontrolled vibrations to be used to lead modal analysis of structures. In reality operational vibrations are a combination of numerous excitations sources that are much more ...
Michon, Guilhem, Morlier, Joseph, Coulange, Baptiste, Gouache, Thibault   +3 more
core  

Output-Only Modal Parameter Recursive Estimation of Time-Varying Structures via a Kernel Ridge Regression FS-TARMA Approach

Shock and Vibration, 2017
Modal parameter estimation plays an important role in vibration-based damage detection and is worth more attention and investigation, as changes in modal parameters are usually being used as damage indicators.
Zhi-Sai Ma, Li Liu, Si-Da Zhou, Lei Yu
doaj   +1 more source

Failure Identification of Dump Truck Suspension Based on an Average Correlation Stochastic Subspace Identification Algorithm

Applied Sciences, 2018
This paper proposes a fault identification method based on an improved stochastic subspace modal identification algorithm to achieve high-performance fault identification of dump truck suspension.
Bingwen Liu, Zhiyong Ji, Tie Wang, Zhenghao Tang, Guoxing Li   +4 more
doaj   +1 more source

A context‐dependent modulatory role for eIF6 in acquired resistance to vemurafenib in melanoma

FEBS Letters, EarlyView.
Acquired resistance to vemurafenib upregulates the translation factor eIF6 in melanoma cells. Silencing eIF6 in resistant cells reduces proliferation and partially restores drug sensitivity, whereas its overexpression increases sensitivity across melanoma lines regardless of BRAF status, via modulation of mTOR, S6K, and MAPK signaling.
George Kyriakopoulos, Antonia Petropoulou, Alexandra Anastogianni, Angelina Bania, Vassilis Stamatakis, Argyris Alexiou, Chi‐Ping Day, Glenn Merlino, Katerina Grafanaki, Constantinos Stathopoulos   +9 more
wiley   +1 more source

Modal parameter identification for a roof overflow powerhouse under ambient excitation

Water Science and Engineering, 2016
Modal parameter identification is a core issue in health monitoring and damage detection for hydraulic structures. For a roof overflow hydropower station with a bulb tubular unit under ambient excitation, a complex unit-powerhouse-dam coupling vibration ...
Yan Zhang, Ji-jian Lian, Fang Liu
doaj