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排序方式: 共有717条查询结果,搜索用时 171 毫秒
591.
660家企业实施安全评价工作绩效现状分析 总被引:1,自引:0,他引:1
通过对16个行业的660家生产经营单位的调研,依据安全评价前企业的安全状况,安全评价过程中企业对项目厂址选择、工艺方案调整情况、企业对提出的对策措施的整改情况,安全评价后企业在安全设施、安全管理水平、事故发生频率等方面的改进情况,得出企业实施安全评价工作后的实际绩效,并指出目前企业安全评价工作存在的一些问题。同时,针对所存在的问题提出合理而可行的对策措施。 相似文献
592.
基于MapInfo的矿山通风安全信息系统开发 总被引:1,自引:0,他引:1
根据现代矿山通风系统对人机交互的要求,利用OLE技术和VisualBasic编程语言,对MapInfo进行二次开发,形成了矿山通风安全信息系统。所开发的系统集成了MapInfo强大的地图、信息、数据库等的管理功能,实现了电子地图与数据库的自动连接和双向查询,完成了信息的可视化管理,并可与生产监控、调度系统集成,用于指导煤矿安全生产,防止重大事故发生。该系统具有修改通风图、生成通风管理报表、备份数据等功能,同时还可以对通风系统中的防瓦斯突出、防尘、防火、安全管理、风机等日常管理数据进行处理,在实际应用中取得了良好的效果。 相似文献
593.
发挥专业救援作用,加强装备与技术保障 总被引:3,自引:0,他引:3
此次汶川大地震带给我们巨大伤痛,也引起社会各界的许多思考。就地震救援和救援过程中的个体防护问题,我们于2008年6月30日访问了中国地震局震灾应急救援司。 相似文献
594.
Wenyong Wu Shiyang Yin Honglu Liu Yong Niu Zhe Bao 《Environmental monitoring and assessment》2014,186(10):6747-6756
The purpose of this study was to determine and evaluate the spatial changes in soil salinity by using geostatistical methods. The study focused on the suburb area of Beijing, where urban development led to water shortage and accelerated wastewater reuse to farm irrigation for more than 30 years. The data were then processed by GIS using three different interpolation techniques of ordinary kriging (OK), disjunctive kriging (DK), and universal kriging (UK). The normality test and overall trend analysis were applied for each interpolation technique to select the best fitted model for soil parameters. Results showed that OK was suitable for soil sodium adsorption ratio (SAR) and Na+ interpolation; UK was suitable for soil Cl? and pH; DK was suitable for soil Ca2+. The nugget-to-sill ratio was applied to evaluate the effects of structural and stochastic factors. The maps showed that the areas of non-saline soil and slight salinity soil accounted for 6.39 and 93.61 %, respectively. The spatial distribution and accumulation of soil salt were significantly affected by the irrigation probabilities and drainage situation under long-term wastewater irrigation. 相似文献
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596.
Michael Rivera Bao Ha Leili Zamini Sonja Gamby Demar Pitter 《Journal of environmental science and health. Part. B》2019,54(1):54-60
We report on the rates of decomposition of a group of N-methylcarbamate (NMC) pesticides (carbaryl, carbofuran and propoxur) under pre-determined tropical field conditions. Rates of decomposition for three NMCs were determined at pH 7.08 and T?=?20?°C and pH 7.70 and T = 33?°C respectively, as follows: carbaryl (78?days and 69?days); carbofuran (143?days and 83?days) and propoxur (116?days and 79?days). Investigation on methods for removal of NMCs and their phenolic decomposition products shows that activated charcoal outperforms zeolite, alumina, diatomaceous earth, cellulose and montmorillonite clay in the removal of both NMCs and phenols from aqueous solution. Furthermore, metal complexation studies on the NMCs and phenols showed that Fe (III) forms a complex with isopropoxyphenol (IPP) within which the Fe:IPP ratio is 1:3, indicative of the formation of a metal chelate complex with the formula Fe(IPP)3. 相似文献
597.
ABSTRACTThis paper investigates the spatial effect of environmental regulation measures on the upgrading of industrial structure in the integrated development strategy of Beijing-Tianjin-Hebei region and its surrounding areas. In order to reflect the effect of the environmental regulation and different regulation measures more truly, this paper constructs indices of the environmental regulation measures through the results of policy texts quantification. On the basis of the previous research, this paper divides environmental regulation into the following types: personnel and administrative measures of command and control; market-oriented fiscal, taxation, financial and other economic measures; guidance measures. Spatial panel regression results show that administrative measures of command control and market-oriented fiscal measures have a significant role in promoting regional industrial structure upgrading, but not conducive to the advancement of the industrial structure of adjacent areas. Their roles in promoting and inhibition are counteracted, which causes the total effect of industrial structure upgrading of Beijing-Tianjin-Hebei and the surrounding areas are not significant. Personnel measures, financial measures, other economic measures and guidance measures do not have the short-term effect and spatial effect on the upgrading of industrial structure. 相似文献
598.
利用厌氧菌发酵产物处理含铅废水及机理研究 总被引:1,自引:1,他引:0
针对传统方法去除废水中重金属铅的缺陷,利用4株厌氧微生物的发酵产物,在不同投加量、pH、温度和反应时间下研究该产物的除铅效果。通过正交实验确定了微生物发酵产物对含铅废水处理的最佳反应条件为:发酵产物投加量为0.5 g,反应时间为20 min,pH=6,温度20℃,铅的去除率99.4%以上,并用蓄电池厂的实际废水进行验证实验,获得相同的效果;同时通过扫描电子显微镜和X-射线能量散射光谱分析厌氧细菌代谢的混合物成分,对去除机理进行了初步探讨,为生物技术处理含铅废水提供了一种新方法和理论依据。 相似文献
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