Results 61 to 70 of about 2,045,581 (235)

Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies

Advanced Functional Materials, EarlyView.
The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley   +1 more source

Mechanical power output during stretch-shortening cycles of rat medial gastrocnemius muscle: Influence of various muscle length trajectories.

PLoS Computational Biology
The average mechanical power output (AMPO) over a stretch-shortening cycle produced by a muscle depends on muscle length and stimulation over time. While the effects of cycle frequency and muscle length excursion on AMPO are well-known, several questions
Edwin D H M Reuvers, Huub Maas, Wendy Noort, Maarten F Bobbert, Dinant A Kistemaker   +4 more
doaj   +1 more source

Effects of Maturation on Plantar Flexor Activity and Achilles Tendon Stiffness in Vertical Jumping: Sex Differences

Sports
The aim of this study was to investigate the effect of maturation on vertical jumping performance, in adolescent boys and girls, concerning plantar flexor activity and Achilles tendon (AT) stiffness.
Zacharoula Paschaleri, Georgios Chalatzoglidis, Theodoros Kannas, Fotini Arabatzi   +3 more
doaj   +1 more source

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

Contraction-specific differences in maximal muscle power during stretch-shortening cycle movements in elderly males and females

, 2001
Aging, muscle power, stretch-shortening cycle, eccentric muscle actions, concentric ...
Simonsen, Erik Bruun, Puggaard, Lis, Aagaard, Per, Caserotti, Paolo   +3 more
core   +2 more sources

Beyond Jump Height: Load-Dependent Effects of Lightweight Wearable Resistance on Countermovement and Drop Jump Biomechanics

Applied Sciences
Of interest were the acute effects of lightweight lower-limb wearable resistance (WR) on the kinematics and kinetics of the countermovement jump (CMJ) and drop jump (DJ). Twenty male athletes (age: 18.05 ± 0.6 years; body mass: 76.4 ± 7.6 kg; height: 182.
Hamish Kyne, John B. Cronin
doaj   +1 more source

COMPARISON OF STATIC, COUNTERMOVEMENT, AND DROP JUMPS OF THE UPPER AND LOWER EXTREMITIES IN U.S. JUNIOR NATIONAL TEAM MALE GYMNASTS

Science of Gymnastics Journal, 2016
This study examined and compared static, countermovement, and rebound-type drop jumps from the upper and lower extremities among USA Junior National Team male gymnasts.
Timothy J. Suchomel, William A. Sands, Jeni R. McNeal   +2 more
doaj   +1 more source

Why fencers should bounce: A new method of movement to engage the stretch-shortening cycle [PDF]

, 2017
While teaching a heel first contact style of footwork in fencing (also referred to as toe contribution avoidance) is in keeping with long-standing traditions, it is not conducive to today’s modern style of fast paced and explosive fencing.
Johan Harmenberg, Anthony N Turner
core   +1 more source

Stretch-shortening cycle in skeletal muscle function : with special reference to elastic energy and potentiation of myoelectrical activity

, 2021
Mechanical behaviour of human leg extensor muscles was investigated under conditions of varied stretch-shortening (eccentric-concentric) cycle movements of the vertical jump.
Bosco, Carmelo
core   +1 more source

Simultaneous Enhancement of Performance and Stability in Dual‐Gate a‐IGZO Thin‐Film Transistors via Single‐Step Laser Annealing for Capacitor‐Less DRAM

Advanced Functional Materials, EarlyView.
A single‐step laser annealing strategy is presented for dual‐gate a‐IGZO TFTs. The steep thermal gradient induces graded oxygen doping in the channel and simultaneous WOx removal at the contacts, enabling concurrent interface and contact engineering.
Sihyeon Kwon, Junil Kim, Geuntae Park, Minseok Kim, Woohyun Hwang, Wanki Kim, Daewon Ha, Byeongmoon Lee, Jae Eun Jang, Hyuk‐Jun Kwon   +9 more
wiley   +1 more source