Results 61 to 70 of about 78,101 (302)

Study on the Different Effects of Power and Trailer Wheelsets on Wheel Polygonal Wear

Shock and Vibration, 2020
The wheels of power and trailer wheelset show different polygonal characteristics since their structures are obviously different. Therefore, the frictional self-excited vibration models of wheelset-track systems are established based on the viewpoint of ...
X. N. Zhao, G. X. Chen, Z. Y. Huang, C. G. Xia   +3 more
doaj   +1 more source

Large amplitude pairing fluctuations in atomic nuclei [PDF]

, 2013
Pairing fluctuations are self-consistently incorporated on the same footing as the quadrupole deformations in present state of the art calculations including particle number and angular momentum conservation as well as configuration mixing.
Egido, J. Luis, Rodríguez, Tomás R., Vaquero, Nuria López   +2 more
core   +2 more sources

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source

Actuating mechanism and design of a cylindrical traveling wave ultrasonic motor using cantilever type composite transducer. [PDF]

PLoS ONE, 2010
BACKGROUND: Ultrasonic motors (USM) are based on the concept of driving the rotor by a mechanical vibration excited on the stator via piezoelectric effect.
Yingxiang Liu, Weishan Chen, Junkao Liu, Shengjun Shi   +3 more
doaj   +1 more source

Experimental and numerical studies of the effects of a rail vibration absorber on suppressing short pitch rail corrugation [PDF]

, 2016
The effects of a rail vibration absorber on suppressing short pitch rail corrugation are studied. Firstly, a rail vibration field test is carried out to analyze the vibration response of the rail with and without the vibration absorbers.
Chen, GX, Ouyang, H, Qian, WJ, Wu, YF
core   +1 more source

Femtosecond study of the effects of ions on the reorientation dynamics of water

, 2012
We study the effects of ions on the reorientation dynamics of liquid water with polarization-resolved femtosecond mid-infared spectroscopy. We probe the anisotropy of the excitation of the O-D stretch vibration of HDO molecules in solutions of NaCl, NaI ...
Bakker, Huib J., Scheidelaar, Stefan, van der Post, Sietse T.   +2 more
core   +1 more source

An optimized tuned mass damper/harvester device [PDF]

, 2014
Much work has been conducted on vibration absorbers, such as tuned mass dampers (TMD), where significant energy is extracted from a structure. Traditionally, this energy is dissipated through the devices as heat.
Burrow, Steve G, Cammarano, Andrea, Clare, Lindsay R, Gonzalez-Buelga, Alicia, Inman, Daniel J, Neild, Simon A   +5 more
core   +3 more sources

Shaping Ti3C2 MXene Nanospheres for Precision Near‐Infrared Photothermal Therapy

Advanced Functional Materials, EarlyView.
In this study, we report producing spherical MXenes via fs laser fragmentation of Ti3C2 flakes in liquid medium. The nanoparticles demonstrated pronounced light absorption and high photothermal conversion efficiencies of 68% and 63% under heating with NIR‐I and NIR‐II lasers, respectively.
Julia S. Babkova, Ivan V. Zelepukin, Konstantin G. Shevchenko, Gleb V. Tikhonowski, Lyubov V. Gorelik, Anton A. Popov, Anna S. Sogomonyan, Alina Yu. Kapitannikova, Ivan S. Kazantsev, Dmitry V. Dyubo, Daria A. Panova, Daniil I. Tselikov, Anton A. Minnekhanov, Aziz B. Mirkasymov, Georgy A. Ermolaev, Alexander V. Syuy, Gleb I. Tselikov, Aleksey V. Arsenin, Andrei V. Kabashin, Kostya S. Novoselov, Sergey M. Deyev, Valentyn S. Volkov   +21 more
wiley   +1 more source

Analytical expressions of friction-induced self-excited vibration amplitudes of the marine rubber bearing-shaft system

Journal of Low Frequency Noise, Vibration and Active Control
By the analytical method, this paper investigates the mode-coupling friction-induced instability and the resulting stick-slip self-excited vibration of the marine stern water-lubricated rubber bearing-shaft system.
Chuang Wu, Dejiang Shang, Yan Xiao, Chao Zhang, Yongwei Liu   +4 more
doaj   +1 more source

Extended averaged equation method and application on analyzing some nonlinear deterministic vibrations

Vietnam Journal of Mechanics, 2009
The paper presents an extended averaged equation approach to the investigation of nonlinear vibration problems. The proposed method is applied to some free/self excited oscillator, nonlinear free and forced oscillations of a suspension system with two ...
Nguyen Dong Anh, Ninh Quang Hai, Werner Schiehlen   +2 more
doaj   +1 more source