Results 41 to 50 of about 354,647 (157)

Transmission of vertical vibration through a seat cushion at the seat pan: Effect of foam physical properties during different excitation magnitudes

Journal of Low Frequency Noise, Vibration and Active Control
The vibration characteristics of car seats directly influence the ride comfort. Polyurethane foam is the key part of a seat, and its physical parameters have an important impact on the seat.
Qiao Luo, Yansong He, Zhifei Zhang, Kaizhan Gao   +3 more
doaj   +1 more source

Study on the Performance of a Quasi-Zero-Stiffness Isolator with Time Delay Control [PDF]

Xibei Gongye Daxue Xuebao, 2018
A quasi-zero-stiffness vibration isolation consists of a pair of oblique springs and a vertical spring, aiming at widening the vibration isolation region, is studied in this paper.

doaj   +1 more source

Synchrotron‐based multi‐scale biological imaging inside biocontainment environments

Journal of Synchrotron Radiation, Volume 33, Issue 5, Page 1245-1254, September 2026.
Orion, the first BSL‐4 synchrotron‐based research complex, advances pathogen research by integrating cutting‐edge, multi‐scale imaging to enhance the understanding of infectious diseases and inform global health policies.The Orion project is designed to be a state‐of‐the‐art research complex that studies dangerous pathogens, located at the Brazilian ...
Mateus Borba Cardoso, Renata Santos Rabelo, Carla Cristina Polo, Lucas Sanfelici, Renan Ramalho Geraldes, Gabriel Barros Zanoni Lopes Moreno, Henrique Pavani Pereira Ramos, Gean Rossi dos Santos, Artur Clarindo Pinto, Sérgio Augusto Lordano Luiz, Harry Westfahl Jr   +10 more
wiley   +1 more source

Factors affecting the dynamic response of the body and the vibration transmitted through seats

, 2010
The vibration transmitted through a seat is influenced by the dynamics of the seat and thedynamics of the occupant. The principal objective of this thesis is to understand how the dynamicsof the body and factors affecting the dynamics of the body ...
Toward, Martin G.R.
core   +1 more source

Vibration control using vibration energy transmissibility of two-degree-of-freedom system with a coupling damper

Mechanical Engineering Journal
Frequency-averaged energy transmissibility and energy dissipation are formulated for a 2-DOF vibration system with both a coupling spring and a coupling damper, and their usefulness for vibration control design is discussed.
Kai KURIHARA, Toru YAMAZAKI
doaj   +1 more source

Power Flow in a Two-Stage Nonlinear Vibration Isolation System with High-Static-Low-Dynamic Stiffness

Shock and Vibration, 2018
The manuscript concerns the power flow characterization in a two-stage nonlinear vibration isolator comprising three springs, which are configured so that each stage of the system has a high-static-low-dynamic stiffness. To demonstrate the distinction of
Ze-Qi Lu, Dong Shao, Hu Ding, Li-Qun Chen   +3 more
doaj   +1 more source

Synergistic Effects of Phenolic Resin and Polymer Architecture on Crosslink Density and Damping in Poly(Epichlorohydrin‐Co‐Ethylene Oxide‐Co‐Allyl Glycidyl Ether) (GECO) Elastomers

Journal of Polymer Science, Volume 64, Issue 16, Page 3471-3491, 15 August 2026.
Phenolic resin reduces crosslink density and alters the viscoelastic response of GECO elastomers. The magnitude of these changes depends strongly on polymer architecture. Damping performance is governed by the combined effects of network density and molecular structure, not resin content alone, providing a framework for designing advanced vibration ...
Yalçın Yalaki, Murat Şen
wiley   +1 more source

Energy flow and performance evaluation of inerter-based vibration isolators mounted on finite and infinite flexible foundation structures

Advances in Mechanical Engineering, 2022
This study investigates the vibration power flow behavior and performance of inerter-based vibration isolators mounted on finite and infinite flexible beam structures.
Zhuang Dong, Jian Yang, Chendi Zhu, Dimitrios Chronopoulos, Tianyun Li   +4 more
doaj   +1 more source

Voice and Speech in Atypical Parkinsonian Disorders

Movement Disorders Clinical Practice, Volume 13, Issue 8, Page 1848-1860, August 2026.
Background Motor speech disorders are early, common, and functionally limiting features of atypical parkinsonian disorders (APDs) such as progressive supranuclear palsy (PSP), corticobasal syndrome (CBS), and multiple system atrophy (MSA). These impairments are underrecognized and undertreated in neurology clinics.
Federico Rodriguez‐Porcel, Farwa Ali, Michiko Bruno, Heather Davis Cuevas, Rohit Dhall, Kylie Dunne‐Platero, Lawrence I. Golbe, Ihtsham Haq, Nicole Herndon, Lawrence S. Honig, Kyurim Kang, Sarah Kremen, Guillaume Lamotte, Nikolaus R. McFarland, Michela Mir, Leila Montaser‐Kouhsari, Alexander Pantelyat, Joel Page, Hylan Pickett, Laura Purcell Verdun, Kelly Richardson, Jessica Shurer, Michelle Troche, Rene L. Utianski, Katya Villarreal‐Cavazos, Tuhin Virmani, Anne‐Marie Wills, as the Diagnosis and Treatment Working Group, CurePSP Center of Care (CoC) Network, Farwa Ali, Michiko Bruno, Timothy Chang, Rohit Dhall, Kimiko Domoto‐Reilly, Lawrence I. Golbe, Ihtsham Haq, Lawrence S. Honig, Sarah Kremen, Guillaume Lamotte, Zoltan Mari, Nikolaus R. McFarland, Leila Montaser‐Kouhsari, Alexander Pantelyat, Federico Rodriguez‐Porcel, Junaid Siddiqui, Jessica Shurer, Christopher Spears, Tuhin Virmani, Anne‐Marie Wills   +48 more
wiley   +1 more source

New Damped-Jerk trajectory for vibration reduction [PDF]

, 2014
This paper derives a jerk-shaped profile to address the vibration reduction of underdamped flexible dynamics of motion system. The jerk-limited profile is a widespread smooth command pattern used by modern motion systems.
BEAREE, Richard
core   +1 more source