Results 81 to 90 of about 1,375,049 (303)

Liquid Crystalline Elastomers in Soft Robotics: Assessing Promise and Limitations

Advanced Robotics Research, EarlyView.
Liquid crystalline elastomers (LCEs) are programmable soft materials that undergo large, anisotropic deformation in response to external stimuli. Their molecular alignment encodes directional actuation in a monolithic structure, making them long‐standing candidates for soft robotic systems.
Justin M. Speregen, Timothy J. White
wiley   +1 more source

The emerging role of exercise preconditioning in preventing skeletal muscle atrophy

Frontiers in Physiology
Skeletal muscle atrophy, characterized by the loss of muscle mass and function, can result from disuse, aging, disease, drug. Exercise preconditioning—a form of exercise training performed before these harmful threats—induces notable remodeling and ...
Xu Zhou, Xu Zhou, Shiming Li, Shiming Li, Lu Wang, Lu Wang, Jun Wang, Peng Zhang, Xiaoping Chen   +8 more
doaj   +1 more source

Measurement of the Impedance of Frog Skeletal Muscle Fibers

Biophysical Journal, 1974
Impedance measurements are necessary to determine the passive electrical properties of cells including the equivalent circuits of the several pathways for current flow. Such measurements are usually made with microelectrodes of high impedance (some 15 MOmega) over a wide frequency range (1-10,000 Hz) and so are subject to many errors.
Valdiosera, R., Clausen, C., Eisenberg, R.S.   +2 more
openaire   +2 more sources

Drug Effect Unveils Inter-head Cooperativity and Strain-dependent ADP Release in Fast Skeletal Actomyosin [PDF]

, 2009
Amrinone is a bipyridine compound with characteristic effects on the force-velocity relationship of fast skeletal muscle, including a reduction in the maximum shortening velocity and increased maximum isometric force.
Torres, Nuria Albet,, Geeves, M., Barman, T., Barman, Tom, Bloemink, Marieke J, Schmitz, S, Piperio, C., Lionne, C, Albet-Torres, Nuria, Schmitz, Stephan, Bloemink, Marieke J., Golker, K., Bloemink, M., Candau, R., Veigel, C., Herrmann, Christian, Albet-Torres, N., Geeves, Michael A, Mansson, A., Mansson, Alf, Herrmann, C., Månsson, Alf,, Piperio, C, Candau, Robin, Geeves, Michael A., Herrmann, C, Frölander, Kerstin,, Schmitz, S., Candau, R, Piperio, Claudia, Lionne, Corinne, Veigel, Claudia, Bloemink, MJ, Geeves, MA, Frolander, K., Lionne, C., Golker, Kerstin, Frolander, Kerstin, Veigel, C, Golker, Kerstin,, Barman, T   +40 more
core   +1 more source

Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion

Advanced Robotics Research, EarlyView.
A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza, Hiroshi Kaminaga, Philippe Fraisse, Gentiane Venture   +3 more
wiley   +1 more source

Skeletal muscle mTORC1 regulates whole-body metabolism [PDF]

, 2015
Skeletal muscle, which represents over 40% of the total body mass, is a dynamic tissue with a key role in the maintenance of metabolic homeostasis. Several lines of evidence indicate that alterations of the normal muscle function, as for example in ...
Ormazabal, Maitea Guridi
core   +1 more source

Robotic Control for Human–Robot Collaborative Assembly Based on Digital Human Model and Reinforcement Learning

Advanced Robotics Research, EarlyView.
This work presents a robotic control method for human–robot collaborative assembly based on a biomechanics‐constrained digital human model. Reinforcement learning is used to generate physiologically plausible human motion trajectories, which are integrated into a virtual environment for robot control learning.
Bitao Yao, Hongzhou Ai, Wenjun Xu, Zude Zhou, Lihui Wang   +4 more
wiley   +1 more source

Hybrid Continuum Robot Designs and Architectures for Healthcare Applications

Advanced Robotics Research, EarlyView.
Hybrid continuum robots represent an emerging class of flexible manipulators that blend materials, structures, and actuation concepts from the established fields of soft and continuum robotics. This review introduces an accessible framework to distinguish key hybridization approaches, surveys current designs aimed at complex clinical applications, and ...
Burak Ozdemir, Muhammad A. Khalid, Manish Chauhan, Pietro Valdastri, James H. Chandler   +4 more
wiley   +1 more source

Imaging of calcium transients in skeletal muscle fibers

Biophysical Journal, 1991
Epifluorescence images of Ca2+ transients elicited by electrical stimulation of single skeletal muscle fibers were studied with fast imaging techniques that take advantage of the large fluorescence signals emitted at relatively long wavelengths by the dyes fluo-3 and rhod-2 in response to binding of Ca2+ ions, and of the suitable features of a ...
Vergara, J., DiFranco, M., Compagnon, D., Suarez-Isla, B.A.   +3 more
openaire   +2 more sources

Mechanism of thyroid-hormone regulated expression of the SERCA genes in skeletal muscle: Implications for thermogenesis [PDF]

, 2001
Thyroid hormone increases the Ca2+-ATPase activity of the sarcoplasmic reticulum (SR) in skeletal muscle, thereby increasing the energy-turnover associated with Ca2+-cycling during contraction and rest. The fast-muscle isoform of the Ca2+-ATPase (SERCA1)
Hardeveld, C., Muller, A., Van der Linden, C. G., Simonides, W.S., Van Hardeveld, C., van der Linden, C.G., Thelen, M.H.M., Linden, C.G., van der, Simonides, W. S., Thelen, M. H.M.   +9 more
core   +1 more source