Results 11 to 20 of about 507,347 (315)

Separation of ions with the same charge to mass ratio from a collision experiment [PDF]

Journal of the Serbian Chemical Society, 2000
Some atomic collision experiments lead to ions having identical q/m ratio, as well as average velocity, so that standard electric and magnetic analyzers are not able to identify them separately.
PIERRE DEFRANCE, DRAGOLJUB S. BELIC
doaj   +2 more sources

Fault Identification of Broken Rotor Bars in Induction Motors Using an Improved Cyclic Modulation Spectral Analysis

Energies, 2019
Induction motors (IMs) play an essential role in the field of various industrial applications. Long-time service and tough working situations make IMs become prone to a broken rotor bar (BRB) that is one of the major causes of IMs faults.
Zuolu Wang, Jie Yang, Haiyang Li, Dong Zhen, Yuandong Xu, Fengshou Gu   +5 more
doaj   +1 more source

Hyperspectral Data: Efficient and Secure Transmission [PDF]

Algorithms, 2017
Airborne and spaceborne hyperspectral sensors collect information which is derived from the electromagnetic spectrum of an observed area. Hyperspectral data are used in several studies and they are an important aid in different real-life applications (e.g., mining and geology applications, ecology, surveillance, etc.). A hyperspectral image has a three-
Pizzolante, Raffaele, Carpentieri, Bruno
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Energy-efficient and high-spectrum-efficiency wireless transmission

ICST Transactions on Mobile Communications and Applications, 2022
With the deployment and commercialization of the fifth-generation (5G) mobile communication networks, the access nodes and data volume of wireless networks are showing massive and explosive growth. In this paper, we firstly review the research progress on the energy-efficient and spectrum-efficient wireless transmission, from the perspectives of both ...
Yajuan Tang, Shiwei Lai, Zhao Zhang, Yanyi Rao, Wen Zhou, Fangyuan Zhu, Liming Chen, Dan Deng, Jing Wang, Cui Tao, Yuwei Zhang, Jun Li, Di Wu, Zhusong Liu, Huang Huang, Xuan Zhou, Zhao Wang, Chao Li, Kai Chen, Wei Zhou, Yun Li, Kaimeno Dube, Abbarbas Muazu, Nakilavai Rono, Sunli Feng, Jiayin Qin, Haige Xiang, Zhang Cao, Lieguang Zeng, Zhixing Yang   +29 more
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A quantitative analysis of transmission efficiency versus intensity for malaria. [PDF]

, 2010
The relationship between malaria transmission intensity and efficiency is important for malaria epidemiology, for the design of randomized control trials that measure transmission or incidence as end points, and for measuring and modelling malaria ...
Chiyaka, Christinah, Smith, DL, Drakeley, Chris J, Chiyaka, C, Smith, David L, David L. Smith, Chris J. Drakeley, Simon I. Hay, Hay, Simon I, Drakeley, CJ, Christinah Chiyaka, Hay, SI   +11 more
core   +1 more source

Research on Factors Affecting the Reducer Transmission Efficiency of Electric Vehicles

, 2022
The transmission efficiency of the reducer is the main factor affecting the efficiency of the whole transmission system. Establishing the transmission efficiency model and analyzing the influencing factors on transmission efficiency are of great ...
Feng Chen, Lü Binghai, Zhongjie Zhang, Weilin Li, Yinda He, Qinghua Yang   +5 more
core   +1 more source

A Novel Fault Detection Method for Rolling Bearings Based on Non-Stationary Vibration Signature Analysis

Sensors, 2019
To realize the accurate fault detection of rolling element bearings, a novel fault detection method based on non-stationary vibration signal analysis using weighted average ensemble empirical mode decomposition (WAEEMD) and modulation signal bispectrum ...
Dong Zhen, Junchao Guo, Yuandong Xu, Hao Zhang, Fengshou Gu   +4 more
doaj   +1 more source

Modulation Sideband Separation Using the Teager–Kaiser Energy Operator for Rotor Fault Diagnostics of Induction Motors

Energies, 2019
Broken rotor bar (BRB) faults are one of the most common faults in induction motors (IM). One or more broken bars can reduce the performance and efficiency of the IM and hence waste the electrical power and decrease the reliability of the whole ...
Haiyang Li, Zuolu Wang, Dong Zhen, Fengshou Gu, Andrew Ball   +4 more
doaj   +1 more source

Transmission Efficiency Limit for Nonlocal Metalenses

Laser & Photonics Reviews, 2023
AbstractThe rapidly advancing capabilities in nanophotonic design are enabling complex functionalities limited mainly by physical bounds. The efficiency of transmission is a major consideration, but its ultimate limit remains unknown for most systems.
Shiyu Li, Chia Wei Hsu
openaire   +2 more sources

An Improved Cyclic Modulation Spectral Analysis Based on the CWT and Its Application on Broken Rotor Bar Fault Diagnosis for Induction Motors

Applied Sciences, 2019
Induction motors (IMs) are widely used in many manufacturing processes and industrial applications. The harsh work environment, long-time enduring, and overloads mean that it is subjected to broken rotor bar (BRB) faults. The vibration signal of IMs with
Dong Zhen, Zuolu Wang, Haiyang Li, Hao Zhang, Jie Yang, Fengshou Gu   +5 more
doaj   +1 more source