Results 41 to 50 of about 209,989 (310)

A new flextensional piezoelectric ultrasonic motor - design, fabrication and characterisation [PDF]

open access: yes, 2007
This paper presents the techniques used for the characterisation of a new type of standing-wave piezoelectric ultrasonic motor. The motor uses a metallic flextensional amplifier, or “cymbal”, to convert the radial mode vibrations of a piezoelectric ...
Wilson, Stephen   +7 more
core   +1 more source

Analysis of vibration characteristics of rotating parallel flexible manipulator considering joint elastic constraints [PDF]

open access: yes, 2022
The bolt joint is the key component connecting the rigid moving base body and the flexible manipulator. The dynamic characteristics of the flexible manipulator under the elastic constraint of the joint are analyzed, and the action mechanism of the ...
Zhang, Wenhui   +3 more
core   +1 more source

Analysis of elastic characteristics of a transverse leaf spring with high-static-low-dynamic stiffness

open access: yesFrontiers in Mechanical Engineering
A variable-stiffness transverse leaf spring offers clear advantages in lightweight design, load-bearing capability, and vibration mitigation, indicating strong potential for broad application. However, the shock-vibration attenuation of conventional leaf
Zhi Li, Zhouquan Li, Huawei Wu, Zhen Liu
doaj   +1 more source

The human gut microbiome across the life course

open access: yesFEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero   +4 more
wiley   +1 more source

The visco-elastic properties of the arterial wall. [PDF]

open access: yes, 1960
PhDThe visco-elastic properties of the arterial wail are of importance in determining the behaviour of the circulatory system for the pulse wave is a relatively rapid event.
Bergel, D.H.
core  

Scattering of flexural waves by a semi-infinite crack in an elastic plate carrying an electric current [PDF]

open access: yes, 2011
Copyright @ 2011 Sage Publications LtdSmart structures are components used in engineering applications that are capable of sensing or reacting to their environment in a predictable and desired manner.
Lawrie, Jane B.   +5 more
core   +1 more source

Mixed Lubrication Analysis of Vane Sliding Surface in Rotary Compressor Mechanisms

open access: yesTribology Online, 2009
In order to investigate the effects of the elastic deformation of the vane-slot on the lubrication characteristics of the vane sliding surface in a rotary compressor, a mixed lubrication analysis considering the elastic deformation has been performed for
Yasutaka Ito   +2 more
doaj   +1 more source

Longitudinal genome‐wide aneuploidy measurements in circulating cell‐free DNA to predict lack of benefit from pembrolizumab in patients with metastatic urothelial cancer

open access: yesMolecular Oncology, EarlyView.
Many patients with urothelial cancer do not benefit from treatment with pembrolizumab, while at risk of severe side effects. Changes in the levels of circulating tumor DNA early during treatment, measured by a simple and affordable assay that can be easily implemented in the clinic, can be used as a prognostic tool to identify these patients.
Youssra Salhi   +14 more
wiley   +1 more source

Vibration analysis of nonlinear and linear elastic systems

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2021
Objective. In this study, the task is to establish the theoretical prerequisites for the operability of a regressive-progressive elastic mechanism by comparing the amplitude-frequency characteristics and phase trajectories with a linear elastic system of
A. S. Lichkovakha   +2 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

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