Results 41 to 50 of about 1,438,489 (296)

Investigation into the tribodynamics of spur gear pairs considering pitch deviations and lubrication

Friction
Pitch deviation, a type of longwave deviation, has been demonstrated to be a significant contributor to noise generation in the drive trains of motor vehicles operating at relatively high speeds. To date, numerous studies have investigated the effects of
Lintao Duan, Hao Zhang, Liming Wang, Wennian Yu, Yimin Shao, Zaigang Chen, Minggang Du, Fengshou Gu, Andrew Ball   +8 more
doaj   +1 more source

Fault Diagnosis of Planetary Gearbox Based on Adaptive Order Bispectrum Slice and Fault Characteristics Energy Ratio Analysis

Sensors, 2020
The vibration of a planetary gearbox (PG) is complex and mutually modulated, which makes the weak features of incipient fault difficult to detect. To target this problem, a novel method, based on an adaptive order bispectrum slice (AOBS) and the fault ...
Zhaoyang Shen, Zhanqun Shi, Dong Zhen, Hao Zhang, Fengshou Gu   +4 more
doaj   +1 more source

Estimating the Impact of Consecutive Blood Meals on Vector Competence of Aedes albopictus for Chikungunya Virus

Pathogens, 2023
The continuous expansion of Aedes albopictus in Europe and the increases in autochthonous arboviruses transmissions in the region urge a better understanding of the virus transmission dynamic.
Eva Veronesi, Anca Paslaru, Julia Ettlin, Damiana Ravasi, Eleonora Flacio, Matteo Tanadini, Valeria Guidi   +6 more
doaj   +1 more source

Waveforms for the Massive MIMO Downlink: Amplifier Efficiency, Distortion and Performance

, 2015
In massive MIMO, most precoders result in downlink signals that suffer from high PAR, independently of modulation order and whether single-carrier or OFDM transmission is used. The high PAR lowers the power efficiency of the base station amplifiers.
Eriksson, Thomas, Larsson, Erik G., Mollén, Christopher   +2 more
core   +2 more sources

A Frequency Locking Method for ICPT System Based on LCC/S Compensation Topology

Energies, 2019
Aiming to maximize the transmission efficiency of inductively coupled power transmission (ICPT) system with the designed output power, a frequency locking method for an ICPT system based on LCC/S compensation topology is proposed in this paper.
Yansong Li, Minhao Wang, Weiwei Zhang, Mengmeng Zhao, Jun Liu   +4 more
doaj   +1 more source

Design and Optimization of a Novel MEMS Tuning Fork Gyroscope Microstructure

Micromachines, 2022
This paper presents the design and optimization of a novel MEMS tuning fork gyroscope microstructure. In order to improve the mechanical sensitivity of the gyroscope, much research has been carried out in areas such as mode matching, improving the ...
Chuanguo Xiong, Pengjun Zeng, Weishan Lv, Fengming Lu, Ming Zhang, Yuhua Huang, Fulong Zhu   +6 more
doaj   +1 more source

Metamaterial Polarization Converter Analysis: Limits of Performance

, 2012
In this paper we analyze the theoretical limits of a metamaterial converter that allows for linear-to- elliptical polarization transformation with any desired ellipticity and ellipse orientation.
A. Drezet, A. Pors, A. Roberts, A.C. Strikwerda, A.C. Strikwerda, Andrei Andryieuski, Andrei V. Lavrinenko, C. Sabah, D. Molter, D.-H. Kwon, Dmitry L. Markovich, F. Wang, J. Hao, J. Hao, J.B. Masson, J.K. Gansel, J.Y. Chin, J.Y. Chin, M. Mutlu, M. Tonouchi, Maksim Zalkovskij, P. Weis, P.U. Jepsen, R. Singh, Radu Malureanu, S.C Saha, S.X. Li, T. Arikawa, T. Kleine-Ostmann, T. Li, W. Sun, X.G. Peralta, Y. Zhao   +32 more
core   +1 more source

Partially Nondestructive Continuous Detection of Individual Traveling Optical Photons [PDF]

, 2015
We report the continuous and partially nondestructive measurement of optical photons. For a weak light pulse traveling through a slow-light optical medium (signal), the associated atomic-excitation component is detected by another light beam (probe) with
Beck, Kristin M., Chen, Wenlan, Duan, Yiheng, Hosseini, Mahdi, Vuletić, Vladan   +4 more
core   +2 more sources

Vector Competence of Aedes aegypti, Aedes albopictus and Culex quinquefasciatus from Brazil and New Caledonia for Three Zika Virus Lineages

Pathogens, 2020
Zika virus (ZIKV) has caused severe epidemics in South America beginning in 2015, following its spread through the Pacific. We comparatively assessed the vector competence of ten populations of Aedes aegypti and Ae.
Rosilainy S. Fernandes, Olivia O’Connor, Maria Ignez L. Bersot, Dominique Girault, Marguerite R. Dokunengo, Nicolas Pocquet, Myrielle Dupont-Rouzeyrol, Ricardo Lourenço-de-Oliveira   +7 more
doaj   +1 more source

Research on Design and Analysis Method of the Double Planetary HMCVT Based on High Efficiency Transmission

Agriculture, 2022
The hydro-mechanical continuously variable transmission (HMCVT) is the critical component in the transmission system of the high-horsepower tractor. However, different structural layouts have a significant influence on transmission efficiency, especially
Jiang Li, Yirong Zhao, Zhiqiang Zhai, Bing Han, Yuefeng Du, Lin Wang, Zhongxiang Zhu   +6 more
doaj   +1 more source