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621.
环境保险在中国的可行性探讨 总被引:8,自引:0,他引:8
在解决环境问题的过程中,包含着诸多的商机,环境保险就是其中一例。环境保险属于责任保险的一种,介绍了环境保险在西方发达国家的发展与实践,并结合我国保险业的现状,得出在我国施行环境保险,既是我国保险业自身发展的需要,也是企业规避风险的需要。 相似文献
622.
入世后环保要求与企业行为的风险、策略分析 总被引:2,自引:0,他引:2
入世后,随着未来市场对产品的环保要求越来越高,消费者希望产品能满足某种使用效用的同时,还希望其环境效益最大化。针对变化多端的市场,企业不得不同时面对各种挑战、机遇和风险并作出相应的战略决策。本文通过分析环保要求对企业行为的作用机理及为确保入世后企业的健康发展提出了相应的对策。 相似文献
623.
介绍了电火花堆焊设备及工艺在冲压模具维修中的使用情况,为大型冲压模具成形面拉伤修复探索出了一种新方法。 相似文献
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Gang Huang Zhaoxiong Yan Shuyuan Liu Tingting Luo Liang An Zhihua Xu 《环境科学学报(英文版)》2020,32(1):173-183
Efficient removal of formaldehyde from indoor environments is of significance for human health.In this work,a typical binary transition metal oxide that could provide various oxidation states,β-NiMoO_4,was employed as a support to immobilize the active Pt component(Pt/NiMoO_4) for catalytic formaldehyde elimination at low ambient temperature(15℃).The results showed that the hydrothermal preparation temperature and time had a noticeable impact on the morphology and catalytic activity of the samples.The catalyst prepared with hydrothermal temperature of 150℃ for 4 hr(Pt-150-4) exhibited superior catalytic activity and stability mainly due to its distinctly porous structure,relative abundance of adsorbed surface hydroxyls/water,and high oxidation ability,which resulted from the interaction of Pt with Ni and Mo of the bimetallic NiMoO_4 support.Our results might shed light on the rational design of multifunctional catalysts for removal of indoor air pollutants at low ambient temperature. 相似文献
629.
Xiaofei Wang Guoping Zhao Hongqiang Wang Junting Liang Shengmin Xu Shaopeng Chen An Xu Lijun Wu 《环境科学学报(英文版)》2018,30(8):133-143
The Jialu River in China has been seriously polluted by the direct discharge of industrial and domestic wastewater. The predominant contaminants of the Jialu River and its adjacent groundwater were recently investigated. However, the potential genotoxic impact of polluted water on human health remains to be clarified. Here, we used human–hamster hybrid(A_L) cells, which are sensitive for detecting environmental mutagens. We found that the cytotoxicity and mutagenicity of the groundwater in the Jialu River basin were influenced by the infiltration of the Jialu River. Hydrological periods significantly affected the cytotoxicity, but not the mutagenic potential, of surface and groundwater. Further, the mutagenic potential of groundwater samples located 1 km from the Jialu River(S_(M-2) water samples) was detected earlier than that of groundwater samples located approximately 20 km from the Jialu River(S_N water samples). Because of high cytotoxicity, the mutagenic potential of water samples from the Jialu River(S_(M-1) water samples) was not significantly enhanced compared with that of untreated controls. To further assess the mutagenic dispersion potential, an artificial neural network model was adopted. The results showed that the highest mutagenic potential of groundwater was observed approximately 10 km from the Jialu River. Although further investigation of mutagenic spatial dispersion is required, our data are significant for advancing our understanding of the origin, dispersion,and biological effects of water samples from polluted areas. 相似文献
630.
沙漠治理新途径新方法 总被引:2,自引:0,他引:2
中国是受土地沙漠化严重危害的国家之一,目前中国土地沙漠化仍然呈增加趋势。本文在对当前中国沙漠治理中存在的问题进行论述的基础上,提出沙漠治理的新途径、新方法,并加以阐述。 相似文献