Energy distribution analysis on suppressing a shielded fire with water mist in a tunnel rescue station

2021 ◽  
Author(s):  
Rongwei Bu ◽  
Chuangang Fan ◽  
Zhengwei Guo ◽  
Yang Zhou
Keyword(s):  
Energy Distribution ◽  
Water Mist ◽  
Distribution Analysis

Adsorption of levofloxacin onto mechanochemistry treated zeolite: Modeling and site energy distribution analysis

2019 ◽  
Vol 222 ◽  
pp. 30-34 ◽  
Author(s):  
Zhen Chen ◽  
Wei Ma ◽  
Guang Lu ◽  
Fanqing Meng ◽  
Shibo Duan ◽  
...  
Keyword(s):  
Energy Distribution ◽  
Distribution Analysis ◽  
Site Energy

Site-energy distribution analysis of humic acids adsorption by zeolitic tuff

2007 ◽  
Vol 14 (3) ◽  
pp. 363-368 ◽  
Author(s):  
S. Capasso ◽  
S. Salvestrini ◽  
E. Coppola ◽  
A. Buondonno ◽  
C. Colella
Keyword(s):  
Energy Distribution ◽  
Humic Acids ◽  
Distribution Analysis ◽  
Zeolitic Tuff ◽  
Site Energy

Copula-Based Time-Frequency Distribution Analysis for Planetary Gearbox Fault Detection

2017 ◽  
Author(s):  
Libin Liu ◽  
Ming J. Zuo
Keyword(s):  
Fault Detection ◽  
Energy Distribution ◽  
Simulated Data ◽  
Frequency Resolution ◽  
Data Sets ◽  
Distribution Analysis ◽  
Frequency Distributions ◽  
Copula Theory ◽  
Planetary Gearbox ◽  
Time Frequency

Linear and bilinear time-frequency distributions (TFDs) have been employed in planetary gearbox fault diagnosis. For linear TFDs, there is a trade-off between the time localization and frequency resolution and the spectrogram may not have correct energy marginals. For bilinear TFDs, they cannot be interpreted as an energy distribution because of the existence of possible negative values even though they are designed for energy density representation. To overcome these shortcomings, TFDs based on copula theory have been reported in the literature. In this paper, we analyze two simulated data sets using linear TFD and copula-based TFD. The results show that the constructed copula-based TFD has desirable properties of being positive, free from cross-term interference, having high time-frequency resolution and matching well with true marginals. The copula-based TFD is also able to locate fault-induced impulses by vertical lines over a certain frequency range in the time-frequency domain. Consequently, this study confirms the advantages of the copula-based TFD as an energy distribution and its capability in fault detection for planetary gearboxes.

Ion and electron energy distribution in the hydrogen discharge

1967 ◽  
Vol 296 (1445) ◽  
pp. 233-242 ◽  
Keyword(s):  
Energy Distribution ◽  
Electron Energy ◽  
Low Pressure ◽  
Distribution Analysis ◽  
Electron Energy Distribution ◽  
Energy Distributions ◽  
Small Probe ◽  
Positive Ions ◽  
New Information ◽  
Hydrogen Discharge

A small probe which extracts a sample pencil from the distribution of ions and electrons in a low pressure arc has been used to carry out a retardation energy distribution analysis on these particles. Axial and radial variations in these distributions in a striated hydrogen discharge have been studied. The results confirm the findings of Boyd & Twiddy for electrons and supplement their data with new information on the energy distributions of the positive ions. The measurements at the striation tail-head transition are in accord with Langmuir’s double sheath criterion.

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