Results 21 to 30 of about 3,454,711 (304)

Potential of Integrated Component-Driven Material Design to Improve Crash Box Performance

Metals, 2023
The crushing of crash boxes is a complex phenomenon characterized by a strong interaction of structural and material properties. Many attempts to improve their energy absorption by adopting one aspect resulted in unacceptable unprogressive bucking. Thus,
Nima Jafarzadeh-Aghdam, Yannik Sparrer, Jannik Zimmermann, Konrad Arno Gregor Mäde, Rahul Sharma, Kai-Uwe Schröder, Sebastian Münstermann   +6 more
doaj   +1 more source

Sprint Kayaking Performance Enhancement by Isometric Strength Training Inclusion: A Randomized Controlled Trial

Sports, 2021
Performing isometric strength training (IST) can enhance various sports performance. This study compared the effects of including IST on sprint kayaking performance as compared to traditional strength training. Twenty sprint kayaking athletes (age 22 ± 4
Danny Lum, Tiago M. Barbosa, Govindasamy Balasekaran   +2 more
doaj   +1 more source

Calculation and Prediction of Crushing Process of Al–Mg–Si Alloy Thin-Walled Components

Metals, 2020
Crushing performance is being widely investigated because it is the key performance indicator of the thin-walled beam structure in automobile safety components.
Hui Guo, Yunlai Deng, Shitong Fan, Renjie Pan   +3 more
doaj   +1 more source

Nanofilaments on glioblastoma exosomes revealed by peak force microscopy [PDF]

Journal of The Royal Society Interface, 2014
Exosomes are sub-100 nm extracellular vesicles secreted by normal and cancer cells. We present a high-resolution structure of previously unidentified nanofilaments on glioblastoma-derived exosomes, using nanoscale peak force imaging. These stiff, adhesive, trypsin- and RNAse-resistant surface nanofilaments add a new dimension to the current structural ...
Sharma, Shivani, Das, Kingshuk, Woo, JungReem, Gimzewski, James K   +3 more
openaire   +4 more sources

The Relationship between Isometric Force-Time Characteristics and Dynamic Performance: A Systematic Review

Sports, 2020
The purpose of this article was to review the data on the relationship between multi-joint isometric strength test (IsoTest) force-time characteristics (peak force, rate of force development and impulse) and dynamic performance that is available in the ...
Danny Lum, G. Gregory Haff, Tiago M. Barbosa   +2 more
doaj   +1 more source

Stronger Is Better: The Impact of Upper Body Strength in Double Poling Performance

Frontiers in Physiology, 2019
The purpose of the present study was to compare time results from a roller-skiing double poling (DP) time trial with different physiological variables, muscular strength variables, and DP characteristics in both male and female young competitive skiers ...
Arnstein Sunde, Jan-Michael Johansen, Martin Gjøra, Gøran Paulsen, Morten Bråten, Jan Helgerud, Jan Helgerud, Øyvind Støren   +7 more
doaj   +1 more source

Association between elite swimmers’ force production and 100 m front crawl inter-lap pacing and kinematics

Frontiers in Sports and Active Living, 2023
The present study aimed to analyse the associations between force production and 100 m front crawl inter-lap pacing and kinematics. Eleven elite male swimmers performed a 100 m front crawl maximal effort to collect 50 m lap time (T50, s) and velocity (v,
Mário J. Costa, Mário J. Costa, Catarina C. Santos, Catarina C. Santos, Francisco Ferreira, Francisco Ferreira, Raul Arellano, J. Paulo Vilas-Boas, J. Paulo Vilas-Boas, Ricardo J. Fernandes, Ricardo J. Fernandes   +10 more
doaj   +1 more source

Changes in Maximal Strength and Home Run Performance in NCAA Division I Baseball Players Across 3 Competitive Seasons: A Descriptive Study

Journal of Functional Morphology and Kinesiology, 2021
The purpose of this longitudinal, descriptive study was to observe changes in maximal strength measured via isometric clean grip mid-thigh pull and home runs (total and home runs per game) across three years of training and three competitive seasons for ...
W. Guy Hornsby, Abigail L. Tice, Jason D. Stone, Justin J. Merrigan, Joshua Hagen, John P. Wagle, Aaron J. Cunanan, Michael H. Stone   +7 more
doaj   +1 more source

Liquid-Phase Peak Force Infrared Microscopy [PDF]

, 2020
Atomic force microscopy-infrared microscopy (AFM-IR) provides a route to bypass Abbe’s diffraction limit through photothermal detections of infrared absorption. With the combination of total internal reflection, AFM-IR can operate in the aqueous phase.
Haomin Wang, Joseph M. González-Fialkowski, Wenqian Li, Qing Xie, Yan Yu, Xiaoji Xu   +5 more
openaire   +1 more source

Test–Retest Reliability and Concurrent Validity of FysioMeter C-Station Assessing Lower-Limb Muscle Strength via Isometric Mid-Thigh Pulls

Applied Sciences
The isometric mid-thigh pull (IMTP) is a reliable method to assess lower limb isometric muscle strength. A portable device (FysioMeter C-station) could serve as a suitable alternative.
Mathias G. Sakstrup, Andreas Schmidt, Seth O’Neill, Brady Green, Martin G. Jørgensen, Andrew J. T. Stevenson   +5 more
doaj   +1 more source