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天然气安全操作工况的研究 被引量:2
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作者 俞群援 《上海煤气》 2016年第1期1-4,10,共5页
针对天然气易燃易爆的特性,利用氮气的惰化原理,以相关爆炸测试实验为基础研究天然气与空气混合气体的爆炸上下限、氮气的临界抑爆浓度,从而为天然气的安全运行操作提供理论依据,确保天然气使用操作过程的安全、避免事故的发生。
关键词 惰化原理 临界抑爆浓度 安全操作
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Epidemic Spread in Networks Induced by Deactivation Mechanism
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作者 YU Xiao-Ling WU Xiao ZHANG Duan-Ming LI Zhi-Hao LIANG Fang WANG Xiao-Yu 《Communications in Theoretical Physics》 SCIE CAS CSCD 2008年第5期1357-1360,共4页
We have studied the topology and epidemic spreading behaviors on the networks in which deactivation mechanism and long-rang connection are coexisted. By means of numerical simulation, we find that the clustering coeff... We have studied the topology and epidemic spreading behaviors on the networks in which deactivation mechanism and long-rang connection are coexisted. By means of numerical simulation, we find that the clustering coefficient C and the Pearson correlation coefficient r decrease with increasing long-range connection μ and the topological state of the network changes into that of BA model at the end (when μ = 1). For the Susceptible-Infect-Susceptible model of epidemics, the epidemic threshold can reach maximum value at μ = 0.4 and presents two different variable states around μ= 0.4. 展开更多
关键词 epidemic threshold deactivation mechanism long-rang connection
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