Results 51 to 60 of about 1,486,164 (204)

Ballistic Transport at Uniform Temperature [PDF]

, 2007
A paradigm for isothermal, mechanical rectification of stochastic fluctuations is introduced in this paper. The central idea is to transform energy injected by random perturbations into rigid-body rotational kinetic energy.
Bou-Rabee, Nawaf, Owhadi, Houman
core   +1 more source

Extraction of oil from jatropha seeds using a twin-screw extruder: Feasibility study [PDF]

, 2013
The objective of this study was to evaluate the feasibility of mechanical pressing to extract oil from jatropha seeds using a twin-screw extruder. Experiments were conducted using a co-rotating (Clextral BC 21, France) twin-screw extruder.
Cerny, Muriel, Evon, Philippe, Kartika, Ika Amalia, Rigal, Luc   +3 more
core   +5 more sources

Study of the Critical Speed of Ultra-High-Speed Diamond Drilling Technology in Marble

Applied Sciences
In order to effectively improve the drilling speed in deep hard rock and save drilling costs, this study explores the transformation mechanism and critical velocity range of ultra-high-speed diamond drilling technology on rock breaking effect, using ...
Yuxiao Li, Kai Zhang, Yue Wang
doaj   +1 more source

A comparison of linear and non-linear strategies for energy harvesting from mechanical vibrations

Frontiers in Physics, 2023
Energy Harvesting strategies coupled with the improvement of electronics and the progressive reduction of power requirements have been widely recognized as fundamental to enable self-powered (or autonomous) devices. Among all the potential energy sources,
Bruno Andò, Salvatore Baglio, Vincenzo Marletta, Adi R. Bulsara   +3 more
doaj   +1 more source

Solid Freeform Fabrication An Advanced Manufacturing Approach [PDF]

, 1990
Solid freeform fabrication (SFF) is the production of freeform solid objects directly from a computer model without part-specific tooling or human intervention.
Barlow, J.W., Beaman, J.J., Bourell, D.L., Marcus, H.L.   +3 more
core   +1 more source

Real-time automatic identification methods for downhole whirling based on mechanical specific energy model of drill bit

Science and Technology for Energy Transition
In the drilling exploitation of hot dry rock for geothermal energy, whirling is one of the main low-efficiency conditions that affect the efficiency of Polycrystalline Diamond Compact (PDC) bit in horizontal well drilling.
Song Weiqiang, Mu Huidong, Yu Haiyang, Zhao Guangzhi, Kong Lulin, Sun Xue, Sun Zhiwei   +6 more
doaj   +1 more source

Laboratory Experimental Study on Rock Breaking Efficiency and Stability of PDC Bit

Shiyou jixie, 2020
In order to evaluate the rock breaking efficiency and stability of the newly developed PDC bit in the target lithologic formation, and guide the optimization, improvement and efficient use of the newly developed PDC bit, full scale laboratory rock ...
Zhang Jiawei, Meng Zhao, Ji Guodong, Cui Meng, Wang Haige, Yang Xiongwen, Yu Lianjie   +6 more
doaj  

Modelling excitonic-energy transfer in light-harvesting complexes

, 2013
The theoretical and experimental study of energy transfer in photosynthesis has revealed an interesting transport regime, which lies at the borderline between classical transport dynamics and quantum-mechanical interference effects. Dissipation is caused
Kramer, Tobias, Kreisbeck, Christoph
core   +1 more source

Optimization of parameters in laser welding of aluminum alloy 5052-H32 using beam oscillation technique for mechanical performance improvement

International Journal of Lightweight Materials and Manufacture, 2022
The beam oscillation is an innovative technique in laser welding resulting in important enhancement of the weld quality. This study assesses with numerical tools this improvement by investigating the effects of laser power, welding speed and amplitude on
Herinandrianina Ramiarison, Noureddine Barka, Sofiène Amira   +2 more
doaj   +1 more source

Extrusion parameters and physical transformations of an extrudate for fish: Effect of the addition of hydrolyzed protein flour from by-products of Oncorhynchus mykiss

Frontiers in Sustainable Food Systems, 2023
IntroductionThe food industries play a fundamental role in feeding for the functions of animal metabolism. Fish feed extrusion cooking includes process-independent factors such as temperature (°C), screw speed (RPM), throughput, feed, and moisture ...
José Luis Hoyos-Concha, Héctor Samuel Villada-Castillo, Diego Fernando Roa-Acosta, Alejandro Fernández-Quintero, Rodrigo Ortega-Toro   +4 more
doaj   +1 more source