Results 91 to 100 of about 1,062,117 (285)

Comparison of methods for calculating vertical jump height in sport [PDF]

, 2021
Problem Title: Comparison of methods for calculating vertical jump height in sport Course Level: Second-year undergraduate. Learning Outcomes: Describe the principles behind calculating jump height from impulse and from flight time Apply the impulse ...
Daniels, Katherine
core   +1 more source

Jump performance in Asian male volleyball players: match demands across player positions in Taiwan’s top-tier competition [PDF]

Journal of Men's Health
Background: Jump performance is crucial in volleyball, but the match demands and positional requirements have received limited research attention in Asia. This study aims to investigate the jump demands of various playing positions in 3-, 4- and 5-set
Meng-Hung Hsieh, Chih-Hui Chiu, Chen-Kang Chang   +2 more
doaj   +1 more source

Influence of TiC and TiN Ceramic Reinforcements on the Microstructure, Thermal Expansion Behavior, and Tensile Properties of Invar 36 Manufactured by Laser Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
This study examines Invar composites reinforced with titanium carbide (TiC) and titanium nitride (TiN) using laser powder bed fusion (LPBF). It presents the influence of reinforcements on microstructure, tensile properties, and thermal expansion. Results show that TiC effectively strengthens Invar while maintaining low thermal expansion, whereas TiN ...
Ayodeji Nathaniel Oyedeji, Natasha Sacks, Johannes Pötschke, Björn Matthey   +3 more
wiley   +1 more source

Segmental Limb Length And Vertical Jump Height

, 2010
PURPOSE: To examine the role that lower extremity segmental length plays on vertical jump displacement. Previous research examining the relationship between segmental limb length and vertical jump ability revealed poor correlations.
Messick, Bryan, Black, Tony, Tony Black, Cipriani, Daniel, Daniel Cipriani, Bryan Messick   +5 more
core   +1 more source

Gallium Microalloying in Bi–Sn Solders: Interfacial Phase Formation, Wettability, and Long‐Term Shear Reliability Under Isothermal Aging

Advanced Engineering Materials, EarlyView.
Gallium microalloying redirects interfacial reactions in low‐temperature Bi–Sn solders from Cu–Sn toward Cu–Ga intermetallic formation. The resulting Cu–Ga layer suppresses intermetallic growth during thermal aging, alters fracture pathways, and improves interfacial stability.
Iva Králová, Markéta Klimtová, Mohd Faizul Mohd Sabri, Yew Hoong Wong, Petr Veselý, Martin Plaček, Karel Dušek   +6 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

Morphology, Transport, and Dynamics of Protein Adsorption in Open‐Cell Metal Foam

Advanced Engineering Materials, EarlyView.
Stainless steel (SS) open‐cell foams are shown to adsorb more protein per unit area than previously reported 316L SS and chromium oxide surfaces under static and flow conditions. An integrated approach combining 3D pore imaging, flow simulation, and protein adsorption experiments characterizes the foam’s performance.
Chinmaya Prerana Inguva, Joseph Lavoie, Afsaneh Rabiei   +2 more
wiley   +1 more source

Correlation of jump height with velocity and preparatory-period variables.

, 2013
(A) Jump height is positively correlated to greater velocities in water and air. (B) Jump height is positively correlated with back-up distances observed during the preparatory period and negatively correlated with depth prior to jumping.
Daphne Soares (402768), Hilary S. Bierman (402769)   +1 more
core   +1 more source

A Novel Approach to Estimate the Transition Temperature via Dynamic Nanoindentation

Advanced Engineering Materials, EarlyView.
A new dynamic nanoindentation‐based method was developed that uses the stiffness ratio as an indicator of the elastic–plastic deformation contributions at different temperatures. The approach successfully identified transition temperatures in ferritic steel and distinguished them from continuously ductile austenitic steel.
Stefan Zeiler, Nikolaus Kostwein, Ronald Schnitzer, Christian Mitterer, Verena Maier‐Kiener   +4 more
wiley   +1 more source

3D‐Printed Titanium Gyroid Scaffold Structure Integrated With Tough Hybrid Materials for Cartilage Replacement

Advanced Engineering Materials, EarlyView.
This study proposes a potential device design for joint cartilage replacement. Silica‐polytetrahydrofuran (SiO2‐PolyTHF) hybrids with customizable mechanical properties were developed to mimic the characteristics of a natural meniscus. These were synthesized through a two‐pot sol–gel hybrid process.
Yu‐Chien Lin, Gloria R. Young, Francesca Tallia, Reece N. Oosterbeek, Shaaz Ghouse, Edward Spiers, Nupur Kohli, Tom Briggs, Marc Masen, Siwei Li, Ren‐Jei Chung, Jonathan R. T. Jeffers, Julian R. Jones   +12 more
wiley   +1 more source