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41.
石油污染生物修复技术研究 总被引：2，自引：0，他引：2
本文概述了影响石油污染物生物降解修复处理的多种因素,对石油污染生物处理技术的发展进行了展望。其中主要影响因素包括：菌种的影响,菌种在不同的环境中和对不同碳链长度的碳氢化合物表现出不同的降解效率;石油物质本身物理化学特性的影响,如石油物质在水体或土壤中的浓度以及石油的粘度、沸点、折射率等特性;生存环境条件的影响,在接种入高效率的降解菌或利用土著微生物进行降解时,降解率受到生存环境中各种条件的影响,如表面活性剂、光照条件、吸附剂的利用、营养盐、共代谢底物、氧气、温度、盐度等。 相似文献
42.
Eric K.W. Aikins 《Natural resources forum》2014,38(4):261-269
Geography provides the basic building blocks for the study of resource use and sustainable development, inasmuch as it categorizes the human environment. Within the environment are resources that are needed for the survival of society. As resources are largely limited and finite, humans as agents of change must employ techniques that allow an efficient and lasting use of the available resources in their environment. This paper discusses the nexus between geography, resource exploitation, use, and sustainable development. It also discusses the characteristics, types, and classification of resources, development and sustainable development as well as the challenges and strategies for attaining sustainable development, particularly in developing countries. 相似文献
43.
In Canadian oil sands mining operations, bitumen is extracted from oil sands using the hot water extraction process, which produces tremendous amounts of tailings. Currently, these tailings are disposed of in large ponds, in which coarse particles settle out relatively quickly and fine particles remain suspended in water and settle very slowly. After years of settling, the fine particles form a stable suspension in water known as mature fine tailings (MFTs). Long-term storage of the MFT is costly and poses a major environmental liability.Oil sands companies are now actively investigating different approaches to replace or reduce the use of oil sands tailings ponds. Filtration of the tailings to produce “dry tailings” for stacking is now being investigated as an alternative by a number of companies. Fast water drainage is a critical step for the filtration process. In this paper, we use simple laboratory-scale filtration tests to evaluate the filterability of the oil sands tailings and to generate a parameter that can be used in filtration scale-up. It was found that the filterability of the original coarse oil sands tailings was relatively low. However, after the fines are flocculated with the coarse particles to form uniform flocs the filterability was improved by several orders of magnitude. The results demonstrate that filtration of the flocculated coarse tailings to produce the “dry” stackable tailings may be viable. 相似文献
44.
探讨了国内外２０种护耳器对石油钻井噪声的防护效果。首先在隔声室内模拟石油钻井工人接触的噪声环境，声级达１０３ｄＢ（Ａ）。采用护耳器主观测量方法对每种护耳器进行噪声防护效果测量，并筛选出噪声防护效果明显的几种护耳器。 相似文献
45.
江西省是我国南方山地森林资源丰富的省份之一。本文详细分析了江西山地森林资源的现状和存在的问题,并就山地森林的保护和合理开发利用提出了6项综合治理措施。 相似文献
46.
云南银杏产业的发展前景 总被引：8，自引：0，他引：8
本文分析了国内外银杏资源的开发与市场状况,以及云南银杏开发与利用前景,提出了开发银杏产业的建议 相似文献
47.
Safety performance is comprised of two components, safety compliance and safety participation. However, relationships between safety performance and unsafe behavior have not been thoroughly investigated. In this work, scales for safety compliance and safety participation were revised for use in the oil industry, and job burnout scale was developed on the basis of the Maslach Burnout Inventory-General Survey (MBI-GS). A structural equation model was then employed to investigate the interactions of these factors for 238 front-line oil workers from the PetroChina Huabei Oilfield Company in China. From the results, it was determined that workers' unsafe behavior could not be reduced significantly solely from these two dimensions of safety performance. Compared with safety participation, safety compliance was found to have a greater influence on unsafe behavior. However, job burnout was found to be a significant moderator between these two components and unsafe behavior. Furthermore, it was determined that oil workers' occupational psychological health conditions must be taken into account to improve organizational safety management and reduce workers’ unsafe behavior. 相似文献
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