Results 31 to 40 of about 69,255 (297)

Fatigue evaluation in maintenance and assembly operations by digital human simulation [PDF]

, 2010
Virtual human techniques have been used a lot in industrial design in order to consider human factors and ergonomics as early as possible. The physical status (the physical capacity of virtual human) has been mostly treated as invariable in the current ...
A Garg, A Hill, A Ren, AR Tilley, B Witmer, Bo Hu, D Anderson, D Chaffin, D Chaffin, D Roman-Liu, D Wood, Damien Chablat, DB Chaffin, Fouad Bennis, François Guillaume, G Chryssolouris, G Li, H Bubb, H Hou, H Iridiastadi, H Sato, I Ben-Gal, J Ding, J Fuller, J Liu, J Ritchie, J Yang, K El ahrache, K El ahrache, L Ma, Liang Ma, M Damsgaard, NI Badler, P Chedmail, S Mathiassen, T Komura, T Xia, W Khalil, W Rohmert, Wei Zhang, Y Arzi, Y Chen, Y Giat   +42 more
core   +5 more sources

Main progress and development direction of shale gas drilling and completion technologies in southeastern Chongqing

Youqicang pingjia yu kaifa, 2021
Southeastern Chongqing is the first area to realize commercial development of shale gas in China. According to the main development progress of drilling and completion technologies in this area, 10 key technologies are summarized, which are, casing ...
WANG Yanqi, HE Qing, LONG Zhiping
doaj  

A parametric study for the design of an optimized ultrasonic-percussive planetary drill tool [PDF]

, 2016
Traditional rotary drilling for planetary rock sampling, in situ analysis, and sample return are challenging because the axial force and holding torque requirements are not necessarily compatible with lightweight spacecraft architectures in low-gravity ...
Harkness, Patrick, Li, Xuan, Lucas, Margaret, Timoney, Ryan, Worrall, Kevin   +4 more
core   +1 more source

Physical simulation and drilling optimization design of hydraulic cavitation and permeability enhancement in Wuhushan Coal Mine

Meikuang Anquan
For the problems that poor gas permeability and strong gas adsorption in the coal seams of Wuhushan Coal Mine leads to poor drilling and extraction efficiency and low extraction rate, physical simulation and on-site testing methods were used to ...
Baoze GU
doaj   +1 more source

Optimization of Stone Cutting Techniques for the Seismic Protection of Archaeological Sites [PDF]

, 2011
Since the beginning of civilization, history tells of the movement of art pieces, monuments and manufacts from site to site. The causes are multiple: the displacements due to the "spoils of war", ordered by kings and emperors, the movements caused by the
Cennamo, C., Chiaia, Bernardino, Di Fiore, M.   +2 more
core   +2 more sources

Comparing the Effect of Semi‐Immersive Virtual Reality, Computerized Cognitive Training, and Traditional Rehabilitation on Cognitive Function in Multiple Sclerosis: A Randomized Clinical Trial

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Cognitive impairment is a common non‐motor symptom in Multiple Sclerosis (MS), negatively affecting autonomy and Quality of Life (QoL). Innovative rehabilitation strategies, such as semi‐immersive virtual reality (VR) and computerized cognitive training (CCT), may offer advantages over traditional cognitive rehabilitation (TCR ...
Maria Grazia Maggio, Desiree Latella, Lilla Bonanno, Paulo Cezar Rocha dos Santos, Marcos Maldonado‐Díaz, Meir Plotnik, Rosaria De Luca, Angelo Quartarone, Rocco Salvatore Calabrò   +8 more
wiley   +1 more source

Optimization of Drilling Parameters in Natural Fibers Composite Plates Based on Grey Relational Analysis

Journal of Natural Fibers
This study focuses on optimizing drilling parameters to minimize delamination, circularity error, and cylindricity in natural fiber composites through a comprehensive full factorial Design of Experiments (DoE) combined with Grey Relational Analysis (GRA).
Mustapha Arslane, Mohamed Slamani, Abdelmalek Elhadi, Salah Amroune, Ahmed Belaadi, Ibrahim M.H. Alshaikh, Djamel Ghernaout   +6 more
doaj   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Development of a switchable system for longitudinal and longitudinal-torsional vibration extraction [PDF]

, 2012
High-frequency/low-frequency drilling is an attractive technology for planetary exploration tools, and one which has seen considerable innovation in the techniques used to ensure rotation of the front-end cutting bit.
Harkness, Patrick, Lucas, Margaret
core  

Developing the drilling tool for trenchless pipeline construction [PDF]

, 2016
The most promising methods of underground pipeline construction are discussed. To increase the efficiency of the drilling tool for underground pipeline construction the following research methods have been used in the article: optimization method of ...
Brusnik, Oleg Vladimirovich, Martynuk, A., Povarnitsyn, S.   +2 more
core   +1 more source