Results 81 to 90 of about 82,652 (246)

Dynamic identification of moumental and historical minaret of the Sehadet

open access: yes, 2015
Modal analysis has been used in three decades in the civil engineering disciplines in order to solve complex structural dynamic problems. In this study, dynamic parameter such as fundamental frequency, mode shapes and damping ratios of minaret of Sehadet
Livaoǧlu, Ramazan   +2 more
core  

On modal analysis of mechanical systems

open access: yesVietnam Journal of Mechanics, 1988
None
Nguyen Thac Si
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

open access: yesFEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Operational Modal Analysis for Seismic Protection of Structures

open access: yes, 2008
This thesis focuses on output-only modal identification tests and on the opportunities they provide in the field of seismic protection of structures. The problem of a good measurement process, in order to obtain high quality data and reliable results ...
Rainieri, Carlo
core  

Vibration Modal Analysis of a New Type of Automobile Transmission Housing

open access: yesJixie chuandong, 2016
Based on the transmission housing which is designed independently by Automotive Engineering Technology Research Institute of Hefei University of Technology,the three- dimensional modeling of the housing is built by using Pro / E software,then imported in
Tao Xiaomin, Wang Shaojie
doaj  

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Data compression for the modal analysis of spatially dense laser Doppler vibrometer measurements

open access: yes, 2015
This paper investigates a method which can be used to compress two-dimensional mobility shapes measured with scanning laser Doppler vibrometers. It is shown that the compressed data can be used as virtual measurements when estimating modal parameters ...
Arruda, JRF   +3 more
core  

Experimental Modal Analysis of a portable grinder disk [PDF]

open access: yes, 1991
This paper reports about experimental investigations conducted on disks for portable grinders: the main goal is to state the benefits obtainable with a new type of "damped" disks, that have been developed to reduce the high noise levels caused by ...
GARZIERA, Rinaldo   +2 more
core  

Correlating low energy impact damage with changes in modal parameters: diagnosis tools and FE validation [PDF]

open access: yes, 2010
This paper presents a basic experimental technique and simplified FE based models for the detection, localization and quantification of impact damage in composite beams around the BVID level.
Niemann, Hanno   +7 more
core   +1 more source

Analysis on Modal Distribution and Modal Density-Based Crossover Frequency in Cabin-Sized Enclosures

open access: yesArchives of Acoustics
In the sound field simulation of cabin-sized enclosures, the Schroeder frequency (SF) is still employed to estimate the crossover frequency (CF) that determines the validity ranges of wave-based and geometrical acoustic methods.
Ziyu Wang, Liangfen Du, Guangzheng Yu
doaj   +1 more source

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