While terrorism is getting increasingly rampant all over the world, it is significant to identify risk and clarify possible damage mechanism for chemical industries. Aside from the national evaluation method of major danger source, we also consider judging the content of threatening against terrorists attack, and building vulnerability and safety risk in the industry. We will discuss the possible risk of major chemical companies from two aspects: the inherent attraction of the target and target selection of terrorist attacks. Thereafter we use WBS-RBS method to identify the risk of terrorist attacks in petrochemical areas. This thesis lays a theoretical foundation for the risk assessment and control of terrorist attack in important chemical industries.
In the actual production and operation of enterprises, it is sometimes inevitable that the floating roof will fall to the bottom. This paper calculates the explosion limit of the mixture of oil gas under the floating roof, and confirms that the concentration of oil gas will be within the explosion limit under certain circumstances. Through the monitoring and analysis of the oil-gas mixing space below the floating roof, corresponding control measures are proposed to deal with the potential safety hazards of the floating plate falling to the bottom.
For most work on separation membrane for oily wastewater, heavy metals in oily wastewater may pollute the environment. Novel α-zirconium-phosphate-nanoparticle/polyacrylonitrile (α-ZrP-NP/PAN) mixed matrix membranes (MMMs) were prepared for effective oily wastewater
treatment. The α-ZrP-NP contributed abundant –OH groups to the MMMs and enhanced their hydrophilicity. Meanwhile, the surface of the MMMs carried enhanced negative charges due to the α-ZrP-NP in the pH range of 3–10. Scanning electron microscopic analysis
of the MMM morphology revealed that the macrovoid structure enhanced, the surface pore size, and the number of pores increased. The MMMs achieved a considerably improved flux and recovery rate of 175.91 L/m2·h and 75.66%, respectively, indicating improvements in filtration
efficiency and anti-fouling performance. The purification effect (oil and COD removal rate) of the MMMs on oily wastewater remains above 90%, which reflects the decent purification ability of the membrane on oily wastewater. The removal rate of Pb2+, a representative heavy metal
ion, reached 94.82%. The regeneration efficiency of the MMM contaminated with lead ions was more than 90%. These results demonstrated the tremendous potential of the treatment of heavy-metal-containing oily wastewater using the fabricated MMMs.
Abstract. By making full use of the resources of literature and data, the status of network information policy and legal system in Japan was disclosed, the outburst features and rules were summarized, and major differences between China and Japan were found. Especially, characteristics of strategic objective, management system, emphasis and form of network information policy and law in Japan were analyzed. The work demonstrated that focusing on study of law and theory of network information resources, its lead to the development and application of new technology, self-construction of network information law and policy system as well as highlighting strategic significance of its construction are implication for our country. The research provided reliable reference for governments at all levels to formulate network information policy and law.
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