Results 21 to 30 of about 12,883 (205)

2D Video Analysis System to Analyze the Performance Model of Figure Roller Skating: A Pilot Study

Proceedings, 2020
Figure roller skating is a discipline composed of various movements which involve jumps, artistic figures and spins in a seamless program which has both technical and shapely difficult.
Cristian Romagnoli, Vincenzo Bonaiuto, Giorgio Gatta, Naomi Romagnoli, Anas Alashram, Elvira Padua, Giuseppe Annino   +6 more
doaj   +1 more source

CFD-Based Analysis of Oil and Gas Two-Phase Flow Characteristics in Double-Row Tapered Roller Bearings with Different Rib Structures

Applied Sciences, 2022
In this study, two-row tapered roller bearings (TBR) with different rib structures were tested under the condition of loss of lubrication. It was found that the double-row TBR with outer ring rib structure worked normally after 40 min of the test, but ...
Wenlin Zhu, Rupeng Zhu, Xin Tang, Fengxia Lu, Xueqiang Bai, Xiaowei Wu, Fajia Li   +6 more
doaj   +1 more source

Research on Meshing Characteristics of Trochoidal Roller Pinion Rack Transmission

Applied Sciences, 2022
As a precision transmission mechanism, the trochoidal roller pinion rack has been paid more and more attention in recent years, but its meshing characteristics have not been deeply explored.
Haiwei Wang, Lulu Li, Geng Liu
doaj   +1 more source

Hot embossing for fabrication of a microfluidic 3D cell culture [PDF]

, 2010
Clinically relevant studies of cell function in vitro require a physiologically-representative microenvironment possessing aspects such as a 3D extracellular matrix (ECM) and controlled biochemical and biophysical parameters. A polydimethylsiloxane (PDMS)
A Bhattacharyya, A Piruska, BG Keselowsky, BG Keselowsky, CW Tsao, G Mehta, GA Diaz-Quijada, GM Whitesides, H Becker, J El-Ali, J Narasimhan, J Steigert, Jessie S. Jeon, JL Charest, JL Charest, JL Charest, JL Charest, Joseph L. Charest, JT Borenstein, KJ Regehr, KR Hawkins, L Martynova, ML Hupert, NB Bowden, PJ Mack, R Sudo, Roger D. Kamm, S Chung, S Chung, S Chung, Seok Chung, SH Ahn, SP Desai, V Vickerman   +33 more
core   +1 more source

Resonance Analysis of Horizontal Nonlinear Vibrations of Roll Systems for Cold Rolling Mills under Double-Frequency Excitations

Mathematics, 2023
In this paper, the fractional order differential terms are introduced into a horizontal nonlinear dynamics model of a cold mill roller system. The resonance characteristics of the roller system under high-frequency and low-frequency excitation signals ...
Li Jiang, Tao Wang, Qing-Xue Huang
doaj   +1 more source

A comparative investigation of meshing characteristics of anti-backlash single-and double-roller enveloping hourglass worm gears

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2019
The new precision transmission system-Anti-backlash roller enveloping hourglass worm gears are now widely employed in many industrial sectors such as robot joint design, packaging production line, and CNC (computer numerical control) machine tools ...
Huan ZHANG, Jie WANG, Shike WANG, Shisong WANG, Ge HE   +4 more
doaj   +1 more source

Multiple-twinning induced recrystallization and texture optimization in a differential-temperature-rolled AZ31B magnesium alloy with excellent ductility

Materials Research Letters, 2022
The effect of differential roller temperature (DTR) (low and high roller temperature difference: 60 and 180 K) on the microstructure evolution, deformation mechanism, and mechanical properties were investigated in a commercial AZ31B alloy sheet. Compared
Ruizhi Peng, Chun Xu, Yu Li, Shaoxiong Zhong, Xiang Cao, Yafei Ding   +5 more
doaj   +1 more source

Inhaled Carbon Monoxide Provides Cerebral Cytoprotection in Pigs [PDF]

, 2012
Carbon monoxide (CO) at low concentrations imparts protective effects in numerous preclinical small animal models of brain injury. Evidence of protection in large animal models of cerebral injury, however, has not been tested.
Mahan, Vicki L., Otterbein, Leo E., Pigula, Frank Alexander, Zurakowski, David   +3 more
core   +2 more sources

Laboratory- and field-based performance-predictions in cross-country skiing and roller-skiing.

PLoS ONE, 2021
The purpose of the present study was to investigate how various laboratory- and field-based tests predict on-snow cross-country (XC) skiing and roller-skiing performance.
Rune Kjøsen Talsnes, Guro Strøm Solli, Jan Kocbach, Per-Øyvind Torvik, Øyvind Sandbakk   +4 more
doaj   +1 more source

Planning for a Sustainable Preservation Environment [PDF]

, 2015
The Monhegan Museum's Planning for a Sustainable Preservation Environment project will assemble a group of skilled professionals to work collaboratively to develop a plan that addresses several serious environmental issues that pose a threat to the long ...
Jennifer Pye, Jennifer Pye
core   +1 more source