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The utility tunnels have been applied extensively to run the various pipelines in the urban areas such as the gas pipeline, electrical power cables, and the likes. Contradicting with the rapid development of the utility tunnels is the ambiguity of the fire protection code to which one critical point is whether to ventilate in the fire accident, which is hampered by the effect of wind on the combustion...
The aim of the study was to increase the production of biosurfactant by using the inexpensive medium materials and the optimized fermentation conditions. Five biosurfactant producers were isolated from oilfield wastewater. The most efficient strain S2 was identified through 16S rDNA sequence analysis, which exhibitted the highest similarities to Bacillus subtilis strains CCTCC M201162. The optimal...
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