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111.
112.
天然气管道工程技术发展水平及推广应用 总被引:2,自引:0,他引:2
任启瑞 《石油工业技术监督》2005,21(5):48-51
介绍了国内外天然气管道工碍技术发展水平,针对我国天然气管网建设的实际,提出了天然气管网系统分析、数字化管道、自动焊、全自动超声波检测、干空气管道干燥、新管道智能检测等6项值得推广应用的新技术。 相似文献
113.
利用管道模拟软件提升技术管理水平 总被引:1,自引:0,他引:1
通过分析管道模拟软件的特点、功能和应用,并结合目前天然气长输管道运营模式中存在的问题,阐述了引入天然气管道模拟软件对于提升技术管理水平的重要性和必要性. 相似文献
114.
达建文 《石油化工技术经济》2005,21(1):25-29
近年来我国原油进口数量急剧增加。石油安全问题引起广泛关注。而我国煤炭与天然气资源相对比较丰富。统筹规划并合理利用煤、油、气资源,通过煤化工、石油炼制、石油化工3个行业技术上的互相借鉴,资源上的互相替代,产业链的互相补充,尽量减少石油的消耗,以减轻对进口原油的依赖。 相似文献
115.
某燃气公司一段埋地高压天然气输送管线某处发生严重破损,为分析失效原因,作者采用宏观形貌分析、扫描电镜分析、化学成分分析、显微组织分析、力学性能检验、Fluent模拟分析等系列方法对该失效管段进行分析。结果表明,与该天然气管近距离平行铺设的自来水供水管道破裂,导致高速水流正面与切向冲刷作用,最终导致天然气管破裂。根据分析结论,提出了预防同类事故发生的建议。 相似文献
116.
This paper uses panel vector autoregressive (VAR) models for euro area member countries to explore the widening of retail bank interest rate spreads that emerged in the course of the global financial crisis. We find that the interest rate pass-through was generally complete on impact before the outbreak of the financial crisis, but became significantly distorted in the period thereafter, which hampered the effectiveness of monetary policy. Empirical evidence suggests that the decrease in the interest rate pass-through can be related to a change in the structural parameters characterizing the economies and a substantial increase in the average size of structural shocks. DSGE model simulations show that an increase in the frictions that banks are subject to can explain the decrease in the retail bank interest rate pass-through. 相似文献
117.
Heidi Karst 《Journal of Sustainable Tourism》2017,25(6):746-762
Common definitions of ecotourism address the need to benefit the well-being of local people; in reality, ecotourism is often supported or dominated by external agents. Local ideological, social and cultural values may be overlooked, thereby disenfranchising local and indigenous stakeholders. This paper examines indigenous perceptions of ecotourism and well-being, and how they relate to ecotourism practices in three Brokpa communities of the first protected area in Bhutan to become a special tourism destination. A range of methods (e.g. semi-structured interviews, participatory mapping) was used and data analysis was couched in the context of buen vivir (living well), an indigenous concept of well-being. Findings indicate that: (1) perceptions of ecotourism vary between community members and contrast with the official park definition; (2) well-being is conceived in diverse ways but corresponds to key features of buen vivir; (3) indigenous worldviews are pervasive, and shape social values and spiritual beliefs in connection to nature; and (4) indigenous cosmologies and traditional values may be strengthened through their integration into modern policies and institutions. This research contributes more non-Western voices to the literature, a concept and mode of analysis for well-being that embraces an indigenous ontology, and empirical insights on indigenous communities in protected areas. 相似文献
118.
Ryan M. Roberts Kelly W. Jones Andrew Seidl Audrey Ek Hannah Smith 《Journal of Sustainable Tourism》2017,25(10):1353-1366
Protected areas are key to the conservation of global biodiversity and ecosystem services; however, their success is contingent upon adequate funding. One possibility to increase funding for park management is to “sell” a wider suite of ecosystem services “produced” by protected areas, such as carbon sequestration. We conducted 420 tourist surveys to analyze willingness to pay (WTP) for ecosystem service benefits via a conservation fee in the Tambopata National Reserve in Peru. We also interviewed eight tour operators about their perceptions of the proposed fee. The average stated WTP was 15 USD. Sixty-six percent of tourists stated they would pay 10 USD or more, which, if actually paid, would have resulted in 318,000 USD for park management in 2015. Most respondents stated they would pay an additional fee if it supported biodiversity conservation or local ecosystem services, such as water, but less than 10% of tourists were motivated by carbon sequestration as a reason to pay the fee. Most tour operators supported the additional fee. Our findings suggest that tourists are willing to pay higher fees to support conservation but that interest in paying for additional ecosystem services from parks may not extend to global and intangible benefits such as carbon sequestration. 相似文献
119.
陈志刚 《生态经济(学术版)》2021,(5):171-178
以北部湾城市群为例用三维生态足迹模型、偏最小二乘法、空间计量模型分析了其自然资本利用状况、空间相关性、驱动因素。结论:(1)城市群自然资本利用处于不可持续状态;(2)自然资本利用程度划分为低、中、高三类,城市也相应分成三类;(3)自然资本利用的主要驱动因素是人口因素、社会经济;(4)空间分析显示全局莫兰指数为正,空间集聚显著,表明自然资本利用存在空间正相关;空间误差模型拟合度最好,并证明自然资本存量占用与人口总量正相关,与GDP总额负相关。 相似文献
120.
本文总结分析了新农村民用建筑的建设现状及特点,探讨了新农村民用建筑的造价控制,并提出了相关对策。 相似文献