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1.
热辐射的破坏准则和池火灾的破坏半径 总被引:10,自引:4,他引:10
热辐射破坏是发生在开放气环境中的池火灾的主要破坏机理。本文讨论了热辐射的破坏准则,提出预测池火灾破坏半径的方法,进行了数值模拟计算,分而和时纳了池火灾的基本规律 相似文献
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自然灾害灾情划分指标研究 总被引:6,自引:1,他引:6
本文阐述了灾情分析中的两个基本方面,即损失的规模和损失的深度,提出了灾级和灾度的概念,对于影响灾级和灾度的主要指标也进行了分析。并就时间和空间变化对灾级划分界线的影响作了论述。 相似文献
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《Journal of Environmental Economics and Management》2014,67(3):510-522
We develop a biologically correct cost system for production systems facing invasive pests that allows the estimation of population dynamics without a priori knowledge of their true values. We apply that model to a data set for olive producers in Crete and derive from it predictions about the underlying population dynamics. Those dynamics are compared to information on population dynamics obtained from pest sampling with extremely favorable results. 相似文献
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Shahbeg S. Sandhu Michael D. Waters 《Journal of environmental science and health. Part. B》2013,48(6):929-948
Abstract Over the last few decades, the use of chemical pesticides has increased dramatically in the U.S. This relatively sudden increase greatly concerns the U.S. Environmental Protection Agency (EPA), since it has the responsibility for ensuring the safety of all pesticides used in the U.S. In response to this concern, EPA has established a review program, the Rebuttable Presumption Against Registration (RPAR), for periodically reassessing the mutagenic and carcinogenic potential of pesticide compounds. This paper presents a review and evaluation of the data reported in the literature on six chemical pesticides suspect for mutagenic potential. The pesticide chemicals discussed are maleic hydrazide; rotenone; monuron; diallate; triallate, and benomyl. 相似文献
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Damage to offshore oil and gas facilities following hurricanes Katrina and Rita: An overview 总被引:2,自引:0,他引:2
Hurricanes Katrina and Rita hit the centre of the American petrochemical industry, shutting down eight refineries, hundreds of oil-drilling and production platforms, and many other industrial facilities. Furthermore, it triggered unprecedented numbers of hazardous-materials releases from industrial facilities and storage terminals onshore, as well as from oil and gas production facilities offshore in the Gulf of Mexico (GoM). In this paper, we analyse the damage caused by the two hurricanes on the offshore oil and gas industry. Hurricanes Katrina and Rita caused the largest number of destroyed and damaged platforms and pipelines, and the highest number of mobile offshore drilling units set adrift in the history of GoM operations. Following the hurricanes, changes have been proposed to operating and emergency procedures, maintenance requirements, and design practices including mooring practices for mobile offshore drilling units. 相似文献
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陕西关中地区城市灾害评价 总被引:8,自引:2,他引:8
本文在详细分析关中地区六个大中城市的主要自然灾害和城市地质灾害的基础上,分别评价了各种灾害造成的经济损失,各个城市的灾害危险性、易损性和抗灾能力,并结合防灾对策对城市进行了综合分类。 相似文献
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The disaster scene in three-dimensional (3D) plays a crucial role in disaster emergency management and risk communication of oil transmission stations. However, existing research for the disaster scene mainly focuses on reproducing the disaster environment and rarely predicts the damage state of the disaster-affected object. This paper proposes an object-oriented modeling method that utilizes a multilevel decomposition pattern for disaster scenes. This method combines earthquake vulnerability assessment with 3D visualization technology to predict and characterize the damage state of critical infrastructure in oil transmission stations. To enhance earthquake risk perception, a simulation system is designed and developed, which allows for the construction of virtual scenes and quick simulation of disaster scenes in 3D. The case application shows that the system improves the 3D modeling efficiency of disaster scenes and enhances public awareness of earthquake risks. The simulation system can provide technical support for seismic mitigation planning and emergency management decision-making at oil transmission stations and has good application prospects. 相似文献
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针对游乐设施行业危险源、损伤、失效和故障四个概念的认知差异,通过研究相关领域这四个概念定义内涵及外延,结合游乐设施安全保障要求高、人-机-环交互频繁、运行工况复杂的特点,重新定义游乐设施这四个概念,辨析相互之间的逻辑关系,并结合游乐设施事故案例进行解析.结果表明:新定义对游乐设施危险源、失效、损伤和故障之间的关系阐述更加清晰准确,为后续的风险评价奠定良好基础. 相似文献