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191.
薛洪旺 《安全.健康和环境》2006,6(9):5-6
中国石油化工集团公司2001年发布实施了HSE管理体系,其初衷不仅是考虑与国际接轨,更重要的是针对行业自身高风险特点进行有效的风险控制.体系运行以来,各直属企业的HSE管理取得了较好的成效,评价出的重大风险基本能得到控制.但"两张皮"现象在很大程度上还是存在的,主要原因是个别企业对集团公司要求建立HSE管理体系的意义认识不够,对体系标准理解不透彻,特别是风险评价这一工作,企业如何做才到位,如何应用和持续应用危害识别、风险评价的结果,并以此控制、降低企业的风险,提高绩效,是很多企业遇到的最大障碍.另外部分企业将风险评价作为一个孤立的要素看待,单纯地就评价而评价,没有将危害识别和风险评价结果应用到其他要素中,真正作为一个体系来理解和运作.笔者结合工作实际,谈一下风险评价在体系中的应用思路. 相似文献
192.
An approximately four months long glasshouse experiment was conducted to examine the effects of elevated carbon dioxide (CO(2)) concentration (1,000 +/- 50 micromol mol(-1)) in the atmosphere on biomass accumulation and allocation pattern, clonal growth and nitrogen (N), phosphorus (P) accumulation by the submerged plant Vallisneria spinulosa Yan. Elevated CO(2) significantly increased V. spinulosa total fresh biomass ( approximately 130%) after 120 days, due to more biomass accumulation in all morphological organs than in those at ambient CO(2) (390 +/- 20 micromol mol(-1)). About 75% of the additional total biomass at elevated CO(2) was accounted for by leaf and rhizome (above ground) biomass and only 25% of it belonged to root and turion (below ground). However, the turions biomass exhibited a greater increase rate than that of organ above ground, which caused reduction in the above/below ground biomass ratio. The clonal growth of V. spinulosa responded positively to elevated CO(2). The number of primary ramets increased up to 1.4-folds at elevated CO(2) and induced a dense growth pattern. For nutrients absorption, concentration of N in leaf and in turion was significantly (p 相似文献
193.
A study of daily and seasonal variations of radon concentrations in underground buildings in major cities of China was carried out. According to the data from the Model 1027 continuous monitor, radon concentrations in the underground buildings changed through two cycles each day. The first cycle was from 12:00 to 0:00 and the highest or lowest value, depending on location, was at about 19:00. The second cycle had a little change. Based on the data from solid state nuclear detectors (SSNTDs), it was concluded that the radon concentrations in underground buildings in winter were lower than in summer, which was opposite to that above the ground level. Similar to that above the ground level, the radon concentrations in spring were close to the year-round average radon concentrations. 相似文献
194.
为了对边坡稳定性分析方法进行研究,以某场地高填方边坡和直立边坡为研究对象,基于Geostudio、理正软件以及ANSYS软件,采用M-P法、Bishop法和强度折减法进行边坡稳定分析。结果表明:高填方边坡安全系数为1.3,为稳定边坡;AB,BC,CD段地块间边坡边坡安全系数依次为0.479,0.410,0.381,基坑边坡安全系数为0.436,均为不稳定边坡;其中,M-P法得到的安全系数偏保守,Bishop法得到的安全系数结果较可靠,强度折减法得到的结果最为理想。研究结果可为边坡稳定性研究与治理提供借鉴。 相似文献
195.
Environmental Fluid Mechanics - Subaerial landslide-generated impulse waves were investigated in a rectangular prismatic channel based on the Froude similarity criterion. Landslides were modeled... 相似文献
196.
197.
Xue Honghai Li Ming Liu Binshuo Meng Qingling 《Environmental science and pollution research international》2021,28(7):8258-8265
Environmental Science and Pollution Research - The photochemical degradation of norfloxacin (NOR) and oxytetracycline (OTC) was investigated under ultraviolet (UV) irradiation. The results... 相似文献
198.
Electrocatalytic oxidation of ciprofloxacin by Co-Ce-Zr/γ-Al2O3 three-dimensional particle electrode
Liu Yaxin Ma Yongwen Wan Jinquan Wang Yan Sun Jian Xue Yangyang 《Environmental science and pollution research international》2021,28(32):43815-43830
Environmental Science and Pollution Research - In this work, Co-Ce-Zr/γ-Al2O33 particle electrodes were prepared for the efficient degradation of ciprofloxacin (CIP). Co-Ce-Zr/γ-Al2O3... 相似文献
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