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121.
薛建 《安全.健康和环境》2009,9(10):13-13,22
风险评价和隐患治理是中国石化HSE管理体系的基础要素和核心要素,其运行质量直接关系到HSE管理体系运行的有效性。近年来在HSE管理体系审核中发现,部分企业对此要素未能按标准的要求实施,影响了风险识别、评价和控制的充分性和有效性。 相似文献
122.
An overview of the spatial and temporal variations of the environmental accidents in China in recent years was presented in
this paper using available data. The results showed that the frequency of pollution accidents was significantly decreased,
from 3462 in 1990 to 462 in 2007. The water and air pollution accidents were found to be the dominant types, accounting for
more than 80% of the total accidents. Considering the classification of environmental accidents at 4 scales, the general environmental
accident, i.e., the least serious type, was the most frequent event, taking up 58.98% of the total pollution accidents. In
addition, the distribution of environmental accidents was generally in accordance with the industrial layout in the country
during the past decade. It is very important to note that the extraordinarily severe environmental accidents showed an increasing
trend in underdeveloped regions, which was caused by the transfer and the development of heavy polluted industry in these
areas. As to the losses of environmental accidents, the casualties presented an obvious reduction tendency, while the direct
economic loss per accident tended to climb up. Furthermore, some key factors that affect the spatial and temporal tendencies
of environmental accidents in China were discussed and some suggestions were put forward, hoping to shed light on environmental
risk management and emergency plans making associated with environmental accidents in China. 相似文献
123.
鉴于目前国内大多数图书馆尚未建立计算机检索专业文献系统,本文介绍了国内外常用的检索环境科学文献资料的工具书,论述了手工检索科技文献资料的方法和步骤.为科技工作者查阅有关国内外科技文献资料提供参考. 相似文献
124.
SiO2掺杂对Ru-TiO2催化剂的结构及其对丁二酸湿式氧化活性的影响 总被引:1,自引:0,他引:1
在TiO2粉末中掺杂SiO2,制备0—20%的SiO2TiO2载体.利用浸渍法在载体上负载Ru,制备Ru/SiO2TiO2催化剂.结果表明,催化剂的晶相以锐钛矿为主,晶粒尺寸为30—50nm.掺杂的SiO2主要为无定型,以5—15nm分散于催化剂中,比表面积随SiO2掺杂量的增加显著增大,但对TiO2的晶体结构无明显影响,也未形成Si—O—Ti键.Ru因粒径细化及含量过低未产生衍射峰.在300ml间歇式反应釜中,反应温度210—270℃,初始氧分压085MPa条件下,对丁二酸(74g·l-1,COD=7000mg·l-1)的催化湿式氧化结果表明,SiO2掺杂量对COD的去除率有显著影响,掺杂10%SiO2的催化剂对COD的去除率最高.在连续十次运行中,COD的去除率保持在85%左右,活性未见降低. 相似文献
125.
126.
Li Xiaomin Zhao Xiaolei Xue Dong Tian Qianqian 《Environmental science and pollution research international》2023,30(5):11443-11457
Environmental Science and Pollution Research - The development of electric vehicles (EVs) is not only a necessary path for China to move from a big country to a powerful country in automobile... 相似文献
127.
The impact of sewage sludge compost on tree peony growth and soil microbiological,and biochemical properties 总被引:1,自引:0,他引:1
In order to assess the suitability of sludge compost application for tree peony (Paeonia suffruticosa)–soil ecosystems, we determined soil microbial biomass C (Cmic), basal respiration (Rmic), enzyme activities, and tree peony growth parameters at 0–75% sludge compost amendment dosage. Soil Cmic, Rmic, Cmic as a percent of soil organic C, enzyme (invertase, urease, proteinase, phosphatase, polyphenoloxidase) activities, and plant height, flower diameter, and flower numbers per plant of tree peony significantly increased after sludge compost amendment; however, with the increasing sludge compost amendment dosage, a decreasing trend above 45% sludge compost amendment became apparent although soil organic C, total Kjeldahl N, and total P always increased with the sludge compost amendment. Soil metabolic quotient first showed a decreasing trend with the increasing sludge compost application in the range of 15–45%, and then an increasing trend from compost application of 45–75%, with the minimum found at compost application of 45%. As for the diseased plants, 50% of tree peony under the treatment without sludge compost amendment suffered from yellow leaf disease of tree peony, while no any disease was observed under the treatments with sludge compost application of 30–75%, which showed sludge compost application had significant suppressive effect on the yellow leaf disease of tree peony. This result convincingly demonstrated that ?45% sludge compost application dosage can take advantage of beneficial effect on tree peony growth and tree peony–soil ecosystems. 相似文献
128.
1 问题的提出
胜利油田各培训机构多年来为油田培养了大批的专业人才。但是,目前安全教育培训仍然采用传统的面对面的教学管理方式,培训计划、培训人员、办班情况、培训内容、成绩单等信息均采用人工记录,上报安全处、劳资处等管理部门的材料还是采用传统的纸质材料,工作效率受到限制。 相似文献
129.
130.