stratalanewayparticle systemGas explosion is one of the most serious events in coal mine. In consideration of the limitation of past research method about gas explosion, three-dimensional(3D) modeling and simulation are suggested. This paper analyzes the research achievements on 3D modeling, and ...
Health experts have known for decades that indoor air pollution hurts children's’ lungs. Now, there are good alternatives to gas stoves.
美 英 un.天然气工业 英汉 un. 1. 天然气工业
The evolution of the interstellar superbubbles arising from sequential supernova explosions or winds from OB associations in the Galactic disk is studied n... S Mineshige,K Shibata,PR Shapiro - 《Astrophysical Journal》 被引量: 36发表: 1993年 Characteristics of flame and blast-wave propagation du...
, didn’t participate in the 13th assembly of the International Renewable Energy Agency (IRENA), held in Abu Dhabi on Jan. 14 to 15. Perhaps it was because she was otherwise engaged in protesting against the razing of the German village of Lützerath for the expansion of a coal mine....
in many situations, the risks associated with gas and smoke emissions from malfunctioning lithium-ion batteries may in some circumstances be a larger threat, especially in confined environments where people are present, such as in an aircraft, a submarine, a mine shaft, a spacecraft or in a ...
After the oil shocks, starting in the seventies sent the local economy into a tailspin, several IMF rescue packages have reduced the tendency to subsidize tremendously. In poor developing countries, such as mine, subsidies are quite popular among the poor unemployed portions of the population who...
“The technology was born in a dust-free laboratory,” he said. “Not many people believe it can be used in a mine.” Zhang and his team have dubbed their creation an “energy concentration rod” as it is able to control the release of explosiv...
The people who sell oil have a time frame problem just like mine. The business of producing oil is like the business of driving a fast express freight train. It takes miles and miles of track and fifteen minutes or more to stop a fast freight without doing the train and the tracks some...
A model of convergence of cylindrical and spherical shock waves in a gas with a uniform density has been considered. The partial differential equations of this model have been reduced to ordinary differential equations, from which the laws of convergence of such shock waves and the dependence α ...