Results 81 to 90 of about 63,940 (291)

The Impact of Endurance Exercise Training on Left Ventricular Torsion

JACC: Cardiovascular Imaging, 2010
We sought to examine the effect of endurance exercise training (EET) on peak systolic left ventricular torsion (LVT) and peak early diastolic untwisting rate (UTR).Left ventricular (LV) structural adaptations to EET have been well characterized. LVT, a recognized marker of LV function in numerous cardiac diseases, has recently been investigated in the ...
Weiner, Rory B., Hutter, Adolph M., Wang, Francis, Kim, Jonathan, Weyman, Arthur E., Wood, Malissa J., Picard, Michael H., Baggish, Aaron L.   +7 more
openaire   +2 more sources

3D‐Printed Hygroscopic Polymer Networks for High‐Humidity Triboelectric Nanogenerators to Wirelessly Power Implantable Electronic Devices‐ A Conceptual Pathway

Advanced Functional Materials, EarlyView.
This work develops 3D‐printable tribopolymer networks that can enhance triboelectric performance under high humidity environments. Polar hydrophilic functional groups and incorporation of zwitterionic monomers promote bound‐water–dominated interfacial polarization thereby increasing electrical outputs.
Linguangze Zhuo, Jiawang Zeng, Qian Chen, Valentin A. Bobrin, Deepak Mishra, Anthony Chun Yin Yuen, Yixia Zhang, Cyrille Boyer, Jin Zhang   +8 more
wiley   +1 more source

Fully Wireless and Flexible Valves for Multiplexed and Prolonged Intravesical Liquid Release

Advanced Healthcare Materials, EarlyView.
A fundamental mechanism for the simultaneous control of multiple magnetic valves is reported in a miniature soft robotic patch for intravesical drug delivery, enabling fully wireless and programmable liquid release. Integrated with a bioadhesive interface and induction‐coupling‐based liquid volume sensing, the soft robotic patch is promising to enable ...
Boyang Xiao, Yi Zhu, Yusheng Wang, Janene M. Pierce, Jeffrey J. Tosoian, Xiaoguang Dong   +5 more
wiley   +1 more source

Research on Mechanical Model and Torsional Stiffness Properties of Leaf Spring Torsional Vibration Dampers for Marine Diesel Engines

Applied Sciences
The torsional stiffness parameter significantly influences the natural frequency of a leaf spring torsional vibration damper and its proper match with a diesel engine, and the nonlinear characteristics of torsional stiffness avoid reduced reliability due
Chunyun Shen, Genpei Li, Zhongxu Tian, Chang Chen, You Zhou   +4 more
doaj   +1 more source

The Stress Singularity in a Stepped Bar Under Impact Torsion

JSME international journal. Ser. 1, Solid mechanics, strength of materials, 1989
An impact torsion problem for a steppedbar composed of two semi-infinite bars bonded completely at each end is investigated. A stress singularity occurs at the corner of the bars. Therefore the stress analysis proceeds considering this stress singularity by making use of the series expansion technique, and the problems are reduced to an infinite set of
Tomoaki TSUJI, Naotake NODA, Toshikazu SHIBUYA, Takashi KOIZUMI   +3 more
openaire   +3 more sources

Resolving the Structural Duality of Graphene Grain Boundaries

Advanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source

Buckling of Carbon Nanotubes: A State of the Art Review

, 2011
The nonlinear mechanical response of carbon nanotubes, referred to as their "buckling" behavior, is a major topic in the nanotube research community. Buckling means a deformation process in which a large strain beyond a threshold causes an abrupt change ...
Brush, Falvo, Hiroyuki Shima, Ho, Majid, Osawa, Radushkevich, Shima, Tombler, Yoshimura   +9 more
core   +2 more sources

The impact of tibial torsion measurements on gait analysis kinematics

Acta Ortopédica Brasileira, 2014
To measure and compare tibial torsion values as assessed by goniometry and three-dimensional kinematics. In addition, the impact of each one of these measurements on kinematic and kinetic results for normal gait was determined.Twenty-three healthy and fully ambulatory patients were assessed, 11 women and 12 men, from 20 to 40 years old.
Lucareli, Paulo Roberto Garcia, Santos, Nadia Maria, Godoy, Wagner De, Bernal, Milena Moreira Barreto, Paes, Ângela Tavares, Ramalho Junior, Amancio   +5 more
openaire   +6 more sources

Cold Atmospheric Plasma‐Activated Decellularized Extracellular Matrix Gel as a Tumor‐Infiltrating Immunoactivation Platform for Post‐Surgical Cancer Immunotherapy

Advanced Materials, EarlyView.
An injectable cold atmospheric plasma‐activated decellularized tumor extracellular matrix hydrogel is introduced as a post‐surgical immunoactivation platform. The engineered gel attracts residual tumor cells and induces immunogenic cell death, reshaping the tumor microenvironment and eliciting systemic antitumor immunity. In combination with checkpoint
Tianxu Fang, Mo Chen, Yueyang Deng, Tianqin Ning, Tianwen Luo, Guojun Chen   +5 more
wiley   +1 more source

Measurement of Newtonian fluid slip using a torsional ultrasonic oscillator

, 2007
The composite torsional ultrasonic oscillator, a versatile experimental system, can be used to investigate slip of Newtonian fluid at a smooth surface. A rigorous analysis of slip-dependent damping for the oscillator is presented.
C. L. M. H. Navier, E. Lauga, G. R. Willmott, J. L. Tallon, W. P. Mason   +4 more
core   +3 more sources