Results 71 to 80 of about 401,207 (303)

Physicochemical Reinforcement Unlocks Sterilization‐Stable Anisotropic Hydrogels for Cell‐Compatible Mock Arteries

Advanced Healthcare Materials, EarlyView.
ABSTRACT In vitro arterial models offer ethical and robust alternatives for vascular research but require cytocompatible materials that replicate physiological mechanics. Poly(vinyl alcohol) (PVA) hydrogels produced by directional freezing and salting‐out (PVA DFSO) are anisotropic yet lack stability for cell culture. Herein, methacrylated PVA (PVA‐MA)
Javiera Sanhueza Ortega, Kirthen Shanmuganathan, Laura Poole‐Warren, Susann Beier, Ulises Aregueta Robles   +4 more
wiley   +1 more source

Spatio-Temporal and Mechanical Analysis of Bench Press Phases: Barbell Kinematics and Dynamics Across Different Load Intensities

Applied Sciences
This study aimed (1) to explore the spatio-temporal phases of the execution of the bench press (BP) exercise based on barbell acceleration and power; (2) to describe barbell velocity, acceleration, mechanical power, and mechanical work at different load ...
Miguel Rodal, Juan Manuel Franco-García, Jorge Carlos-Vivas, Francisco García-Muro San José, Arturo Pérez Gosálvez, Guillermo Charneco Salguero, Kostas Gianikellis, Jorge Pérez-Gómez   +7 more
doaj   +1 more source

Effects of Recreational Ski Mountaineering on Cumulative Muscle Fatigue – A Longitudinal Trial

Frontiers in Physiology, 2018
Sport is known to have many positive effects on mental and physical health. High-intensity exercise is considered to decrease muscle strength and induce muscle fatigue, which is associated with a higher risk of injury.
Simon Haslinger, Simon Haslinger, Cornelia Blank, David Morawetz, Arnold Koller, Tobias Dünnwald, Sarah Berger, Nico Schlickum, Wolfgang Schobersberger, Wolfgang Schobersberger   +9 more
doaj   +1 more source

Plug-type heat flux gauge [PDF]

, 1991
A plug-type heat flux gauge formed in a material specimen and having a thermoplug integrally formed in the material specimen, and a method for making the same are disclosed. The thermoplug is surrounded by a concentric annulus, through which thermocouple
Koch, John, Jr., Liebert, Curt H.
core   +1 more source

Shielding at a distance due to anomalous resonance in superlens with eccentric core

, 2017
A cylindrical plasmonic structure with a concentric core exhibits an anomalous localized resonance which results in cloaking effects. Here we show that, if the structure has an eccentric core, a new kind of shielding effect can happen. In contrast to the
Lim, Mikyoung, Yu, Sanghyeon
core   +1 more source

Tough, Ductile, and Strong Hard‐Soft Cementitious Composite Enabled by Multi‐Material Additive Manufacturing

Advanced Materials, EarlyView.
Drawing inspiration from the layered hard‐soft architecture found in sea sponges, this work establishes a new framework for architected cementitious composites (ACC) through multi‐material additive manufacturing (MMAM) process. The integration of mortar and elastomer phases into layered architectures enables synergistic toughening mechanisms, including
Aimane Najmeddine, Shashank Gupta, William Makinen, Zayvinn Lin, Krystal Delnoce, Reza Moini   +5 more
wiley   +1 more source

Increased prefrontal activity and reduced motor cortex activity during imagined eccentric compared to concentric muscle actions

Frontiers in Human Neuroscience, 2012
In this study we used functional magnetic resonance imaging (fMRI) to examine differences in recruited brain regions during the concentric and the eccentric phase of an imagined maximum resistance training task of the elbow flexors in healthy young ...
CJ eOlsson, CJ eOlsson, Mattias eHedlund, Peter eSojka, Ronnie eLundström, Britta eLindström   +5 more
doaj   +1 more source

Colloidal hydrodynamic coupling in concentric optical vortices

, 2005
Optical vortex traps created from helical modes of light can drive fluid-borne colloidal particles in circular trajectories. Concentric circulating rings of particles formed by coaxial optical vortices form a microscopic Couette cell, in which the amount
Allen L., D. G Grier, Gahagan K. T., He H., K Ladavac, Landau L. D., Pozrikidis C., Reichert M., Reicherter M., Simpson N. B.   +9 more
core   +2 more sources

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

Advanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha, Bilguun Nurzed, Mostafa Berangi, Andre Kuehne, Helmar Waiczies, Igor Fabian Tellez Ceja, Xiang Hu, Thomas Gladytz, Lisa Krenz, Dave Huebler, Beate Endemann, Claudia Brockmann, Ebba Beller, Oliver Stachs, Thoralf Niendorf   +14 more
wiley   +1 more source

Relationships between force-time curve variables and jump height during countermovement jumps in young elite volleyball players

Acta Gymnica, 2018
Background: The importance of vertical jumps has been extensively recognised in sports. Furthermore, the main indicator of success in vertical jumps is the attained height, however, there is lack of knowledge on how the eccentric and concentric force ...
Javad Sarvestan, Mahdi Cheraghi, Masoud Sebyani, Elham Shirzad, Zdeněk Svoboda   +4 more
doaj   +1 more source