Results 21 to 30 of about 202,557 (336)

Experiment of N2O4 Leakage and Diffusion in A Closed Space

Academic Journal of Science and Technology, 2023
The paper, by experiment of physical simulation, researched the leakage and diffusion law of N2O4 in a specific closed space. To simulate N2O4 leakage, the experiment pumped a certain amount of N2O4 gas into a specific space from a simulated leak point. And some electrochemical sensors were used to detect the concentration of N2O4 gas in some places in
Jiazhao Chen, Xueren Wang
openaire   +1 more source

Leakage Diffusion Modeling of Key Nodes of Gas Pipeline Network Based on Leakage Concentration

Sustainability, 2023
In order to achieve the prediction and early warning of city gas pipe network leakage accidents, as well as to provide rapid and precise support for emergency response to such accidents, this study focuses on a Gaussian diffusion model applied to a large urban gas pipeline network.
Hao-Peng Li, Liang-Chao Chen, Zhan Dou, Yi-Meng Min, Qian-Lin Wang, Jian-Feng Yang, Jian-Wen Zhang   +6 more
openaire   +1 more source

Leakage Analysis and Hazardous Boundary Determination of Buried Gas Pipeline Considering Underground Adjacent Confined Space

Energies, 2022
Urban underground construction projects are intertwined vertically and horizontally, and adjacent confined spaces such as water supply and drainage pipelines, side ditches and underground canals may exist near buried gas pipelines.
Zhixue Wang, Yongbin Liu, Haibin Liang, Zhe Xu, Fanxi Bu, Jina Zhang, Hua Du, Yan Wang, Shuangqing Chen   +8 more
doaj   +1 more source

Self-Similar Evolution of Cosmic-Ray-Modified Quasi-Parallel Plane Shocks [PDF]

, 2007
Using an improved version of the previously introduced CRASH (Cosmic Ray Acceleration SHock) code, we have calculated the time evolution of cosmic-ray (CR) modified quasi-parallel plane shocks for Bohm-like diffusion, including self-consistent models of ...
Achterberg, Achterberg, Aharononian, Amato, Beck, Bell, Berezhko, Berezhko, Berezhko, Blandford, Blasi, Carilli, Drury, Drury, Ellison, Ellison, Gieseler, Hyesung Kang, Jones, Kang, Kang, Kang, Kang, Kang, Kang, Kang, Kang, Lagage, Lucek, Malkov, Malkov, Malkov, Malkov, Malkov, McKee, Röttgering, Skilling, Spitzer, T.W. Jones, Vladimirov   +39 more
core   +1 more source

Impacts of Wind Speed and Leakage Height on Chlorine Leakage Diffusion

Procedia Engineering, 2014
AbstractSimulation for safety analysis of the leakage of toxic and harmful gas diffusion accident is beneficial for emergency treatment or pre-treatment. Based on the Fluent software substances transmission platform, in this paper, a chlorine gas leak and diffusion model established in the obstacle environment.
Pei, Zhao, Zude, LIU
openaire   +1 more source

Research on Leakage and Diffusion characteristics of Liquid Hydrogen Based on Gaussian Diffusion Model

Journal of Physics: Conference Series, 2022
Abstract In order to analyze the diffusion characteristics of the hydrogen cloud during a liquid hydrogen leakage accident, the Matlab calculation program of liquid hydrogen leakage and diffusion was compiled based on the Gaussian diffusion theory, and analyzed the influence of wind speed, pressure, leakage area and other factors on the ...
Bangkai Shi, Yanwei Chen, Yang Hu, Yawen Wang   +3 more
openaire   +1 more source

Forecasts for the concentration of petroleum gas leakage diffusion under different liquid level heights of a sealing ring of sizeable floating roof tank

Scientific Reports, 2022
The sealing ring of the external floating roof tank is prone to petroleum gas leakage due to material aging and oil corrosion. Petroleum gas leakage and diffusion easily accumulate above the floating deck.
Yonghui Wei, Wenfeng Wu, Hongliang Yu, Jinshu Lu, Mengqing Huang, Min Guo   +5 more
doaj   +1 more source

Mechanism of saline deposition and surface flashover on high-voltage insulators near shoreline:mathematical models and experimental validations [PDF]

, 2019
This paper deals with sea salt transportation and deposition mechanisms and discusses the serious issue of degradation of outdoor insulators resulting from various environmental stresses and severe saline contaminant accumulation near the shoreline.
Chaudhary, Muhammad Akmal, Hussain, Muhammad Majid, Razaq, Abdul   +2 more
core   +2 more sources

Electron and nuclear spin dynamics in the thermal mixing model of dynamic nuclear polarization [PDF]

, 2012
A novel mathematical treatment is proposed for computing the time evolution of dynamic nuclear polarization processes in the low temperature thermal mixing regime.
Alberto Rosso, Ardenkaer-Larsen, Ardenkjaer-Larsen, Barnes, Borghini, Colombo Serra, Comment, Fabio Tedoldi, Gerfen, Golman, Golman, Hovav, Hovav, Hovav, Hwang, Hwang, Jannin, Johannesson, Karabanov, Kessenikh, Kessenikh, Khutsishvili, Kurdzesau, Lumata, Lumata, Macholl, Provotorov, Provotorov, Provotorov, Provotorov, Shimon, Song, Sonia Colombo Serra, Zhou   +33 more
core   +3 more sources

Effects of Bulk and Surface Conductivity on the Performance of CdZnTe Pixel Detectors [PDF]

, 2001
We studied the effects of bulk and surface conductivity on the performance of high-resistivity CdZnTe (CZT) pixel detectors with Pt contacts. We emphasize the difference in mechanisms of the bulk and surface conductivity as indicated by their different ...
Bolotnikov, Aleksey E., Chen, C. M. Hubert, Cook, Walter R., Harrison, Fiona A., Kuvvetli, Irfan, Schindler, Stephen M.   +5 more
core   +2 more sources