Results 41 to 50 of about 556,138 (304)

Research on the aerodynamic characteristics of a lift drag hybrid vertical axis wind turbine

Advances in Mechanical Engineering, 2016
Compared with a drag-type vertical axis wind turbines, one of the greatest advantages for a lift-type vertical axis wind turbines is its higher power coefficient ( C p ).
Xiaojing Sun, Yajun Chen, Yang Cao, Guoqing Wu, Zhongquan Zheng, Diangui Huang   +5 more
doaj   +1 more source

Experimental and Theoretical Analysis of the Drag Torque in Wet Clutches

Fluid Dynamics & Materials Processing, 2019
: Traditional mathematical models cannot predict and explain the phenomenon by which the drag torque (DT) in wet clutches rises in the high-speed zone. In order to evaluate the DT in such conditions, a two-phase air-fluid mathematical model for a DT with
Ha Pan, Xiaojun Zhou
semanticscholar   +1 more source

Rapid Fabrication of Self‐Propelled and Steerable Magnetic Microcatheters for Precision Medicine

Advanced Materials, EarlyView.
A rapid Joule heating fabrication method for the production of self‐propelling, adaptive microcatheters, with tunable stiffness and integrated microfluidic channels is presented. Demonstrated through three microrobotic designs, including a steerable guiding catheter, an untethered wave‐crawling TubeBot, and a distal‐end propelled microcatheter, it was ...
Zhi Chen, Boris Rivkin, David Castellanos‐Robles, Ivan Soldatov, Lukas Beyer, Mariana Medina‐Sánchez   +5 more
wiley   +1 more source

Study of Torque, Drag and Hydraulics of a Deviated Drilled Well using Drilling Office Software [PDF]

Journal of Chemical and Petroleum Engineering, 2019
Rotational drilling was a revolution in drilling technology. It made the drilling process more efficient and faster and more depth of well could be achieved through rotation method.
Amir Hossein Saeedi Dehaghani, Saeed karami, Mahdi Golri   +2 more
doaj   +2 more sources

Drag-compensated, precision-powered hinge system [PDF]

, 1985
The design of a high precision powered hinge is complicated by the unavoidable presence of parasitic drag torque resulting mainly from friction and transfer of power, signals, and fluids across the hinge.
Jacquemin, G. G., Rusk, S. J.
core   +1 more source

Recent developments in planet migration theory

, 2012
Planetary migration is the process by which a forming planet undergoes a drift of its semi-major axis caused by the tidal interaction with its parent protoplanetary disc.
A. Crida, A. Crida, A. Crida, A. Crida, A. Crida, A. Johansen, A. Lagrange, A. Pepliński, A. Pepliński, A. Pepliński, A. Pierens, A.L. Uribe, A.W. Howard, B.A. Ayliffe, C. Baruteau, C. Baruteau, C. Baruteau, C. Baruteau, C. Baruteau, C. Marois, C. Marois, C. Mordasini, C.D. Murray, C.E.J.M.L.J. Terquem, C.F. Gammie, D. Syer, D.G. Korycansky, D.N.C. Lin, D.N.C. Lin, D.N.C. Lin, F. Masset, F. Pepe, F.S. Masset, F.S. Masset, F.S. Masset, F.S. Masset, F.S. Masset, F.S. Masset, F.S. Masset, F.S. Masset, F.S. Masset, G. Bryden, G. D’Angelo, G. D’Angelo, G. D’Angelo, G. D’Angelo, G. D’Angelo, G. Laughlin, G. Lesur, G.I. Ogilvie, H. Jang-Condell, H. Li, H. Tanaka, H. Zhang, H. Zhang, H.H. Klahr, J. Casoli, J. Goodman, J.B. Pollack, J.C.B. Papaloizou, K. Menou, K. Morohoshi, K.C. Schlaufman, K.J. Walsh, L.R. Doyle, M. Mayor, M.K. Lin, M.K. Lin, M.K. Lin, M.K. Lin, M.R. Bate, N.I. Shakura, N.J. Balmforth, P. Artymowicz, P. Artymowicz, P. Goldreich, P. Goldreich, P. Hellary, P.B. Ivanov, R. Dong, R.P. Nelson, R.P. Nelson, R.P. Nelson, R.R. Rafikov, R.V.E. Lovelace, S. Fromang, S. Ida, S. Ida, S. Michael, S. Paardekooper, S. Paardekooper, S.A. Balbus, S.J. Paardekooper, S.J. Paardekooper, S.J. Paardekooper, S.J. Paardekooper, S.J. Paardekooper, T. Fleming, T. Muto, W. Kley, W. Kley, W. Lyra, W. Lyra, W.F. Winters, W.R. Ward, W.R. Ward, W.R. Ward, W.R. Ward, Y. Hasegawa, Z. Zhu   +109 more
core   +3 more sources

Magnetic anisotropy of asbestos fibres [PDF]

, 1999
Original article can be found at : http://jap.aip.org/jap/ Copyright American Institute of PhysicsThe anisotropy of magnetic susceptibility of single asbestos fibers is measured.
Blauuw C., Hirst E., P. H. Kaye, Stroink G., Stroink G., Timbrell V., Z. Ulanowski   +6 more
core   +1 more source

2D Nanomaterials Toward Function‐Ready Superlubricity in Advanced Microsystems

Advanced Materials, EarlyView.
A unified framework links structural and transformation superlubricity with microsystem functions and deployment requirements. Mechanisms, device architectures, integration strategies, AI‐guided discovery, and benchmarking protocols are connected to define function‐ready superlubricity in advanced microsystems.
Yushan Geng, Jun Yang, Yong Yang
wiley   +1 more source

Plasmonic Nanomachines: Creating Local Potential Gradients and Motions

Advanced Materials, EarlyView.
Plasmonic nanomachines can generate optical, thermal, and chemical potential gradients to drive directional rectilinear, rotational, and twisting motions at the nanometer scale. The integration of multimodal plasmonic forces with functional materials and programmed structural distortions enables precise spatiotemporal actuation, thereby providing a ...
Yoonhee Kim, Soohyun Ji, Donghyun Choi, Jwa‐Min Nam   +3 more
wiley   +1 more source

Controlled propulsion and separation of helical particles at the nanoscale [PDF]

, 2017
Controlling the motion of nano and microscale objects in a fluid environment is a key factor in designing optimized tiny machines that perform mechanical tasks such as transport of drugs or genetic material in cells, fluid mixing to accelerate chemical ...
Ala-Nissila, Tapio, Alcanzare, Maria Michiko T., Karttunen, Mikko, Ollila, Santtu T. T., Thakore, Vaibhav   +4 more
core   +2 more sources