韶钢总调几台10t单钩双梁桥式起重机技术改造的方法及体会

韶钢总调半成品库的10t天车已满足不了生产的需要.根据自身的实际情况,经过科学的论证,决定把4台10t天车的提升能力增加至13t,半年多生产证明,本次技术改造是成功的.     

升级规划环境影响评价制度响应规划制度改革-基于《生态文明体制改革总体方案》的思考

《生态文明体制改革总体方案》提出要编制统一的空间规划,空间规划的提出是升级现行规划制度,用制度保护生态环境的体现。规划环评作为一项政策评价工具,可以引导和约束规划决策的生态性和可持续性。现行规划环评制度无论是在评价对象上,还是在功能、层次、内容、程序和强制性上,都已经无法满足规划制度的未来发展需求。因此,本文提出应同步升级规划环评制度,以响应规划制度改革的发展需求。在此基础上,本文重点分析了升级规划环评制度的六个要点:促进形成不同规划环评之间的制度合力,加强规划环评与项目环评的联动与互动,强调三级规划环评之间的衔接,落实规划环评制度与规划制度的协同,注重多元主体参与式的规划环评架构建设以及提升规划环评制度的严肃性和强制性。     

Assessing the ecosystem service of air pollutant removal by urban trees in Guangzhou (China)

In Chinese cities, air pollution has become a serious and aggravating environmental problem undermining the sustainability of urban ecosystems and the quality of urban life. Besides technical solutions to abate air pollution, urban vegetation is increasingly recognized as an alternative ameliorative method by removing some pollutants mainly through dry deposition process. This paper assesses the capability and monetary value of this ecosystem service in Guangzhou city in South China. The results indicated an annual removal of SO(2), NO(2) and total suspended particulates at about 312.03Mg, and the benefits were valued at RMB90.19 thousand (US$1.00=RMB8.26). More removal was realized by recreational land use due to a higher tree cover. Higher concentration of pollutants in the dry winter months induced more removal. The lower cost of pollution abatement in China generated a relatively subdued monetary value of this environmental benefit in comparison with developed countries. Younger districts with more extensive urban trees stripped more pollutants from the air, and this capacity was anticipated to increase further as their trees gradually reach final dimensions and establish a greater tree cover. Tree cover and pollutant concentration constitute the main factors in pollutant removal by urban trees. The efficiency of atmospheric cleansing by trees in congested Chinese cities could be improved by planting more trees other than shrubs or grass, diversifying species composition and biomass structure, and providing sound green space management. The implications for greenery design were discussed with a view to maximizing this ecosystem service in Chinese cities and other developing metropolises.     

民事司法改革进程中环境纠纷行政处理问题探析

民事司法手段的局限性限制了司法手段在环境纠纷解决中的地位和作用。民事司法改革进程的深入发展和多元化纠纷解决机制的兴盛为环境纠纷的多元化解决途径带来了新的发展契机。环境纠纷行政处理的专业性、便捷性、可接近性决定了行政处理在环境纠纷解决中的独特作用和适用空间。在借鉴发达国家和地区环境纠纷行政处理的立法经验和灵活多样的纠纷解决途径的基础上,从环境纠纷行政处理专门立法、纠纷解决机构设置、纠纷解决方式、行政处理的纠纷范围、行政处理救济的程序保障等方面,提出完善我国环境纠纷行政处理制度的思考和建议。     

大数据时代的环境信息治理变革——从信息公开到公共服务

环境信息治理发展历经三个阶段:自给自足、信息公开与公共服务。随着大数据时代的来临,当前环境信息治理处于环境信息公开向环境信息公共服务的转型与变革。这次变革的核心是以公众为本位,表现为环境信息需求的公众主导,以及环境信息供给的公众参与,包括参与环境信息的供给决策、生产过程、以及公共服务质量监督与评价等全过程。当前环境信息治理变革的目标路径重点包括5个方面,即提高公众满意度、优化环境信息公开、严格环境信息质量控制、整合环境信息资源、实现多元供给。     

A case study of the opportunities and trade-offs associated with deproclamation of a protected area following a land claim in South Africa

Reconciling conservation and social justice imperatives is a major challenge facing many postcolonial states worldwide. Where historically disenfranchised communities have laid legal claim to protected areas, the typical resolution has been collaborative management agreements between the state and claimant communities. The real outcomes of such strategies for people and ecosystems have been seriously questioned, although alternative approaches are seldom explored. Here, we reflect on one such alternative that was pursued in a case in South Africa, where the land was handed back to the community and a replacement protected area created. Our objective was to explore the opportunities and trade-offs associated with this approach for communities and conservation agencies alike, and to compare these to typical collaborative management outcomes. Methods included key informant interviews, focus group discussions and household surveys. We find that, surprisingly, this approach created more benefits for the conservation agency than for claimant communities. Indeed, the community experiences bore a striking resemblance to those experienced in collaborative management settings: intra-community conflict, confusion over leadership and serious questions about the boundaries of the “community”. Processes aimed at redressing past injustice in disputes over conservation land, regardless of the approach adopted, must bring with them a strong commitment to building institutional and leadership capacities within communities, and pay serious attention to the ways in which equity and social justice can be fostered after the settlement of a land claim. Settlement agreements are frequently treated as the final step towards social justice, but are in fact just the beginning.     

超细颗粒物凝聚中试试验均匀给料方案研究

给料的均匀性对PM2.5团聚试验至关重要,运用数值方法,采用LES模型计算湍流流场,采用DPM模型计算颗粒运动轨迹,分析PM2.5团聚中试试验台烟道内加设钝体后颗粒的均匀分布,得到了水平烟道各截面处颗粒浓度分布及数值的均方差曲线,发现在试验台圆方管处加设钝体,能有效改善烟道内煤灰颗粒的均匀分布。     

Trends in real commodity prices: How real is real?

Testing for the existence of downward trends in real commodity prices has been the focus of several studies since the Prebisch–Singer hypothesis was formulated back in 1950. In this article, we focus on annual and monthly series of various commodity categories and consider alternative price deflators. Based on the methodology of Harvey et al. (2010), which is robust to the order of integration of the time series, we conclude that the time frequency and the price deflators play a key role when testing for the Prebisch–Singer hypothesis. For instance, at an annual frequency (1900–2003, 1900–2008), it becomes considerably more likely to support it when deflating by the unadjusted US CPI-all items than when deflating by the Manufactures Unit Value (MUV) Index or the Historical Price Index of Manufactures (HPIM). This finding is in agreement with the Svedberg and Tilton (2006) discussion on the CPI's overestimation of inflation and the measurement of the real price of copper. When dealing with monthly data (January 1957–December 2010), our results show that real prices tend not to reject the null hypothesis of a trendless series, except when deflating by the PPI-Crude Materials and, to a lesser extent, by the HPIM.     

Contesting sustainable development: low-impact development in Pembrokeshire Coast National Park

This paper assesses the credentials of the planning system in dealing with low-impact developments in the countryside. Forming part of the wider debate on sustainable development in the UK, low-impact developments challenge contemporary rural planning orthodoxy. A detailed case study of Brithdir Mawr in Pembrokeshire Coast National Park reveals the complexities and sensitivities inherent in operationalizing sustainability in this context. The results reveal a planning system reluctant to embrace unconventional lifestyles and methods claiming to be sustainable. It is concluded that the planning system and low-impact developments both need to demonstrate their sustainability credentials in a more direct and empirical manner. Ultimately this could be built into revised criteria for allowing dwellings in the open countryside. Copyright © 2001 John Wiley & Sons, Ltd.     

高职经济类专业校内实训基地建设的改革探索

针对高职院校经济类专业校内实训基地建设中存在的基地建设欠缺、设施建设不完善和规划不合理等问题,经济类专业校内实训基地建设应该采取寻求社会支持、构建新型实践教学体系等措施,以提高整体实践教学水平,达到高职院校经济类专业能够重点培养学生职业能力的效果。